1 ----------------------------------------
2 22 December 2016. Summary of changes for version 20161222:
5 1) ACPICA kernel-resident subsystem:
7 AML Debugger: Implemented a new mechanism to simplify and enhance
8 debugger integration into all environments, including kernel debuggers
9 and user-space utilities, as well as remote debug services. This
10 mechanism essentially consists of new OSL interfaces to support debugger
11 initialization/termination, as well as wait/notify interfaces to perform
12 the debugger handshake with the host. Lv Zheng.
15 AcpiOsInitializeDebugger (void)
16 AcpiOsTerminateDebugger (void)
17 AcpiOsWaitCommandReady (void)
18 AcpiOsNotifyCommandComplete (void)
20 New OS services layer:
21 osgendbg.c -- Example implementation, and used for AcpiExec
23 Update for Generic Address Space (GAS) support: Although the AccessWidth
24 and/or BitOffset fields of the GAS are not often used, this change now
25 fully supports these fields. This affects the internal support for FADT
26 registers, registers in other ACPI data tables, and the AcpiRead and
27 AcpiWrite public interfaces. Lv Zheng.
29 Sleep support: In order to simplify integration of ACPI sleep for the
30 various host operating systems, a new OSL interface has been introduced.
31 AcpiOsEnterSleep allows the host to perform any required operations
32 before the final write to the sleep control register(s) is performed by
36 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
38 Called from these internal interfaces:
42 EFI support: Added a very small EFI/ACPICA example application. Provides
43 a simple demo for EFI integration, as well as assisting with resolution
44 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
46 source/tools/efihello/efihello.c
48 Local C library: Implemented several new functions to enhance ACPICA
49 portability, for environments where these clib functions are not
50 available (such as EFI). Lv Zheng:
57 Fixed a regression where occasionally a valid resource descriptor was
58 incorrectly detected as invalid at runtime, and a
59 AE_AML_NO_RESOURCE_END_TAG was returned.
61 Fixed a problem with the recently implemented support that enables
62 control method invocations as Target operands to many ASL operators.
63 Warnings of this form: "Needed type [Reference], found [Processor]" were
64 seen at runtime for some method invocations.
66 Example Code and Data Size: These are the sizes for the OS-independent
67 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
68 debug version of the code includes the debug output trace mechanism and
69 has a much larger code and data size.
72 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
73 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
75 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
76 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
79 2) iASL Compiler/Disassembler and Tools:
81 Disassembler: Enhanced output by adding the capability to detect and
82 disassemble ASL Switch/Case statements back to the original ASL source
83 code instead of if/else blocks. David Box.
85 AcpiHelp: Split a large file into separate files based upon
86 functionality/purpose. New files are:
90 ----------------------------------------
91 17 November 2016. Summary of changes for version 20161117:
94 1) ACPICA kernel-resident subsystem:
96 Table Manager: Fixed a regression introduced in 20160729, "FADT support
97 cleanup". This was an attempt to remove all references in the source to
98 the FADT version 2, which never was a legal version number. It was
99 skipped because it was an early version of 64-bit support that was
100 eventually abandoned for the current 64-bit support.
102 Interpreter: Fixed a problem where runtime implicit conversion was
103 incorrectly disabled for the ASL operators below. This brings the
104 behavior into compliance with the ACPI specification:
112 Table Manager: Added a new public interface, AcpiPutTable, used to
113 release and free an ACPI table returned by AcpiGetTable and related
114 interfaces. Lv Zheng.
116 Example Code and Data Size: These are the sizes for the OS-independent
117 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
118 debug version of the code includes the debug output trace mechanism and
119 has a much larger code and data size.
122 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
123 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
125 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
126 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
129 2) iASL Compiler/Disassembler and Tools:
131 Disassembler: Fixed a regression for disassembly of Resource Template.
132 Detection of templates in the AML stream missed some types of templates.
134 iASL: Fixed a problem where an Access Size error was returned for the PCC
135 address space when the AccessSize of the GAS register is greater than a
138 iASL: Implemented several grammar changes for the operators below. These
139 changes are slated for the next version of the ACPI specification:
140 RefOf - Disallow method invocation as an operand
141 CondRefOf - Disallow method invocation as an operand
142 DerefOf - Disallow operands that use the result from operators
144 do not return a reference (Changed TermArg to
147 iASL: Control method invocations are now allowed for Target operands, as
148 per the ACPI specification. Removed error for using a control method
149 invocation as a Target operand.
151 Disassembler: Improved detection of Resource Templates, Unicode, and
152 Strings within Buffer objects. These subtypes do not contain a specific
153 opcode to indicate the originating ASL code, and they must be detected by
154 other means within the disassembler.
156 iASL: Implemented an optimization improvement for 32-bit ACPI tables
157 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
158 only after 64-bit to 32-bit truncation. A truncation warning message is
159 still emitted, however.
161 AcpiXtract: Implemented handling for both types of line terminators (LF
162 or CR/LF) so that it can accept AcpiDump output files from any system.
165 AcpiBin: Added two new options for comparing AML files:
166 -a: compare and display ALL mismatches
167 -o: start compare at this offset into the second file
169 ----------------------------------------
170 30 September 2016. Summary of changes for version 20160930:
173 1) ACPICA kernel-resident subsystem:
175 Fixed a regression in the internal AcpiTbFindTable function where a non
176 AE_OK exception could inadvertently be returned even if the function did
177 not fail. This problem affects the following operators:
181 Fixed a regression in the LoadTable operator where a load to any
182 namespace location other than the root no longer worked properly.
184 Increased the maximum loop count value that will result in the
185 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
186 prevent infinite loops within the AML interpreter and thus the host OS
187 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
190 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
191 acpixf.h file. This allows hosts to easily configure the maximum loop
194 Removed an illegal character in the strtoul64.c file. This character
195 caused errors with some C compilers.
197 Example Code and Data Size: These are the sizes for the OS-independent
198 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
199 debug version of the code includes the debug output trace mechanism and
200 has a much larger code and data size.
203 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
204 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
206 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
207 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
210 2) iASL Compiler/Disassembler and Tools:
212 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
213 the simpler ASL ElseIf keyword. During the conversion, a trailing If
214 block could be lost and missing from the disassembled output.
216 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
217 the missing rule caused a parse error when using the Index operator as an
218 operand to ObjectType. This construct now compiles properly. Example:
221 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
222 option). Previously, unresolved symbols could cause a protection fault.
223 Such symbols are now marked as unresolved in the map file.
225 iASL: Implemented support to allow control method invocations as an
226 operand to the ASL DeRefOf operator. Example:
227 DeRefOf(MTH1(Local0))
229 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
230 possible _PLD buffer now includes examination of both the normal buffer
231 length (16 or 20) as well as the surrounding AML package length.
233 Disassembler: Fixed a problem with the decoding of complex expressions
234 within the Divide operator for ASL+. For the case where both the quotient
235 and remainder targets are specified, the entire statement cannot be
236 disassembled. Previously, the output incorrectly contained a mix of ASL-
237 and ASL+ operators. This mixed statement causes a syntax error when
239 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
241 Divide (INT1 + 6, 128, RSLT, QUOT)
243 iASL/Tools: Added support to process AML and non-AML ACPI tables
244 consistently. For the disassembler and AcpiExec, allow all types of ACPI
245 tables (AML and data tables). For the iASL -e option, allow only AML
248 ----------------------------------------
249 31 August 2016. Summary of changes for version 20160831:
252 1) ACPICA kernel-resident subsystem:
254 Improve support for the so-called "module-level code", which is defined
255 to be math, logical and control AML opcodes that appear outside of any
256 control method. This change improves the support by adding more opcodes
257 that can be executed in the manner. Some other issues have been solved,
258 and the ASL grammar changes to support such code under all scope
259 operators (Device, etc.) are complete. Lv Zheng.
261 UEFI support: these OSL functions have been implemented. This is an
262 additional step toward supporting the AcpiExec utility natively (with
263 full hardware access) under UEFI. Marcelo Ferreira.
264 AcpiOsReadPciConfiguration
265 AcpiOsWritePciConfiguration
267 Fixed a possible mutex error during control method auto-serialization. Lv
270 Updated support for the Generic Address Structure by fully implementing
271 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
274 Updated the return value for the internal _OSI method. Instead of
275 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
276 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
277 implementations, and will be reflected and clarified in the next version
278 of the ACPI specification.
280 Implemented two new table events that can be passed to an ACPICA table
281 handler. These events are used to indicate a table installation or
282 uninstallation. These events are used in addition to existed table load
283 and unload events. Lv Zheng.
285 Implemented a cleanup for all internal string-to-integer conversions.
286 Consolidate multiple versions of this functionality and limit possible
287 bases to either 10 or 16 to simplify the code. Adds a new file,
290 Cleanup the inclusion order of the various compiler-specific headers.
291 This simplifies build configuration management. The compiler-specific
292 headers are now split out from the host-specific headers. Lv Zheng.
294 Example Code and Data Size: These are the sizes for the OS-independent
295 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
296 debug version of the code includes the debug output trace mechanism and
297 has a much larger code and data size.
300 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
301 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
304 2) iASL Compiler/Disassembler and Tools:
306 iASL/AcpiExec: Added a command line option to display the build date/time
307 of the tool (-vd). This can be useful to verify that the correct version
308 of the tools are being used.
310 AML Debugger: Implemented a new subcommand ("execute predef") to execute
311 all predefined control methods and names within the current namespace.
312 This can be useful for debugging problems with ACPI tables and the ACPI
315 ----------------------------------------
316 29 July 2016. Summary of changes for version 20160729:
319 1) ACPICA kernel-resident subsystem:
321 Implemented basic UEFI support for the various ACPICA tools. This
323 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
324 2) Support to obtain the ACPI tables on UEFI.
325 3) Local implementation of required C library functions not available on
327 4) A front-end (main) function for the tools for UEFI-related
330 The initial deployment of this support is the AcpiDump utility executing
331 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
332 Current environments supported are Linux/Unix. MSVC generation is not
333 supported at this time. See the generate/efi/README file for build
334 instructions. Lv Zheng.
336 Future plans include porting the AcpiExec utility to execute natively on
337 the platform with I/O and memory access. This will allow viewing/dump of
338 the platform namespace and native execution of ACPI control methods that
339 access the actual hardware. To fully implement this support, the OSL
340 functions below must be implemented with UEFI interfaces. Any community
341 help in the implementation of these functions would be appreciated:
346 AcpiOsReadPciConfiguration
347 AcpiOsWritePciConfiguration
349 Restructured and standardized the C library configuration for ACPICA,
350 resulting in the various configuration options below. This includes a
351 global restructuring of the compiler-dependent and platform-dependent
352 include files. These changes may affect the existing platform-dependent
353 configuration files on some hosts. Lv Zheng.
355 The current C library configuration options appear below. For any issues,
356 it may be helpful to examine the existing compiler-dependent and
357 platform-dependent files as examples. Lv Zheng.
360 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
362 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
363 2) Unix/Windows/BSD applications:
364 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
366 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
367 3) UEFI applications:
368 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
370 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
371 4) UEFI applications (EDK2/StdLib):
372 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
373 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
376 AML interpreter: "module-level code" support. Allows for execution of so-
377 called "executable" AML code (math/logical operations, etc.) outside of
378 control methods not just at the module level (top level) but also within
379 any scope declared outside of a control method - Scope{}, Device{},
380 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
382 Simplified the configuration of the "maximum AML loops" global option by
383 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
387 Example Code and Data Size: These are the sizes for the OS-independent
388 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
389 debug version of the code includes the debug output trace mechanism and
390 has a much larger code and data size.
393 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
394 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
397 2) iASL Compiler/Disassembler and Tools:
399 iASL: Add full support for the RASF ACPI table (RAS Features Table).
400 Includes disassembler, data table compiler, and header support.
402 iASL Expand "module-level code" support. Allows for
403 compilation/disassembly of so-called "executable" AML code (math/logical
404 operations, etc.) outside of control methods not just at the module level
405 (top level) but also within any scope declared outside of a control
406 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
409 AcpiDump: Added support for dumping all SSDTs on newer versions of
410 Windows. These tables are now easily available -- SSDTs are not available
411 through the registry on older versions.
413 ----------------------------------------
414 27 May 2016. Summary of changes for version 20160527:
417 1) ACPICA kernel-resident subsystem:
419 Temporarily reverted the new arbitrary bit length/alignment support in
420 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
421 a number of regressions with the new code that need to be fully resolved
422 and tested before this support can be finally integrated into ACPICA.
423 Apologies for any inconveniences these issues may have caused.
425 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
426 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
427 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
429 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
430 option. Adds a new return macro, return_STR. Junk-uk Kim.
432 Example Code and Data Size: These are the sizes for the OS-independent
433 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
434 debug version of the code includes the debug output trace mechanism and
435 has a much larger code and data size.
438 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
439 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
441 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
442 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
444 ----------------------------------------
445 22 April 2016. Summary of changes for version 20160422:
447 1) ACPICA kernel-resident subsystem:
449 Fixed a regression in the GAS (generic address structure) arbitrary bit
450 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
451 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
453 ACPI 6.0: Added support for new/renamed resource macros. One new argument
454 was added to each of these macros, and the original name has been
455 deprecated. The AML disassembler will always disassemble to the new
456 names. Support for the new macros was added to iASL, disassembler,
457 resource manager, and the acpihelp utility. ACPICA BZ 1274.
459 I2cSerialBus -> I2cSerialBusV2
460 SpiSerialBus -> SpiSerialBusV2
461 UartSerialBus -> UartSerialBusV2
463 ACPI 6.0: Added support for a new integer field that was appended to the
464 package object returned by the _BIX method. This adds iASL compile-time
465 and AML runtime error checking. ACPICA BZ 1273.
467 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
468 Subspace Type2" (Headers, Disassembler, and data table compiler).
470 Example Code and Data Size: These are the sizes for the OS-independent
471 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
472 debug version of the code includes the debug output trace mechanism and
473 has a much larger code and data size.
476 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
477 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
479 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
480 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
483 2) iASL Compiler/Disassembler and Tools:
485 iASL: Implemented an ASL grammar extension to allow/enable executable
486 "module-level code" to be created and executed under the various
487 operators that create new scopes. This type of AML code is already
488 supported in all known AML interpreters, and the grammar change will
489 appear in the next version of the ACPI specification. Simplifies the
490 conditional runtime creation of named objects under these object types:
498 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
499 ease-of-use to the ASL language. The syntax is similar to the
500 corresponding C operator, and is implemented with the existing AML While
501 opcode -- thus requiring no changes to existing AML interpreters.
503 For (Initialize, Predicate, Update) {TermList}
508 Initializer // Nothing | TermArg => ComputationalData
509 Predicate // Nothing | TermArg => ComputationalData
510 Update // Nothing | TermArg => ComputationalData
514 iASL: The _HID/_ADR detection and validation has been enhanced to search
515 under conditionals in order to allow these objects to be conditionally
518 iASL: Fixed several issues with the constant folding feature. The
519 improvement allows better detection and resolution of statements that can
520 be folded at compile time. ACPICA BZ 1266.
522 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
523 conversion to the ASL ElseIf operator where incorrect ASL code could be
526 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
527 sometimes an extra (and extraneous) set of parentheses were emitted for
528 some combinations of operators. Although this did not cause any problems
529 with recompilation of the disassembled code, it made the code more
530 difficult to read. David Box. ACPICA BZ 1231.
532 iASL: Changed to ignore the unreferenced detection for predefined names
533 of resource descriptor elements, when the resource descriptor is
534 created/defined within a control method.
536 iASL: Disassembler: Fix a possible fault with externally declared Buffer
539 ----------------------------------------
540 18 March 2016. Summary of changes for version 20160318:
542 1) ACPICA kernel-resident subsystem:
544 Added support for arbitrary bit lengths and bit offsets for registers
545 defined by the Generic Address Structure. Previously, only aligned bit
546 lengths of 8/16/32/64 were supported. This was sufficient for many years,
547 but recently some machines have been seen that require arbitrary bit-
548 level support. ACPICA BZ 1240. Lv Zheng.
550 Fixed an issue where the \_SB._INI method sometimes must be evaluated
551 before any _REG methods are evaluated. Lv Zheng.
553 Implemented several changes related to ACPI table support
554 (Headers/Disassembler/TableCompiler):
555 NFIT: For ACPI 6.1, updated to add some additional new fields and
557 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
559 DMAR: Added new constants per the 10/2014 DMAR spec.
560 IORT: Added new subtable per the 10/2015 IORT spec.
561 HEST: For ACPI 6.1, added new constants and new subtable.
562 DBG2: Added new constants per the 12/2015 DBG2 spec.
563 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
565 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
567 Updated header support for the DMAR table to match the current version of
570 Added extensions to the ASL Concatenate operator to allow any ACPI object
571 to be passed as an operand. Any object other than Integer/String/Buffer
572 simply returns a string containing the object type. This extends the
573 usefulness of the Printf macros. Previously, Concatenate would abort the
574 control method if a non-data object was encountered.
576 ACPICA source code: Deployed the C "const" keyword across the source code
577 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
579 Example Code and Data Size: These are the sizes for the OS-independent
580 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
581 debug version of the code includes the debug output trace mechanism and
582 has a much larger code and data size.
585 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
586 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
588 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
589 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
592 2) iASL Compiler/Disassembler and Tools:
594 iASL/Disassembler: Improved the heuristic used to determine the number of
595 arguments for an externally defined control method (a method in another
596 table). Although this is an improvement, there is no deterministic way to
597 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
598 will completely solve this problem as it is deployed (automatically) in
601 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
602 statements that could cause errors when the disassembled file is
603 compiled. ACPICA BZ 1243. David Box.
605 iASL: Fixed a regression caused by the merger of the two versions of the
606 local strtoul64. Because of a dependency on a global variable, strtoul64
607 could return an error for integers greater than a 32-bit value. ACPICA BZ
610 iASL: Fixed a regression where a fault could occur for an ASL Return
611 statement if it invokes a control method that is not resolved. ACPICA BZ
614 AcpiXtract: Improved input file validation: detection of binary files and
615 non-acpidump text files.
617 ----------------------------------------
618 12 February 2016. Summary of changes for version 20160212:
620 1) ACPICA kernel-resident subsystem:
622 Implemented full support for the ACPI 6.1 specification (released in
623 January). This version of the specification is available at:
624 http://www.uefi.org/specifications
626 Only a relatively small number of changes were required in ACPICA to
627 support ACPI 6.1, in these areas:
628 - New predefined names
630 - A new subtable for HEST
631 - A few other header changes for new values
633 Ensure \_SB_._INI is executed before any _REG methods are executed. There
634 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
636 Reverted a change made in version 20151218 which enabled method
637 invocations to be targets of various ASL operators (SuperName and Target
638 grammar elements). While the new behavior is supported by the ACPI
639 specification, other AML interpreters do not support this behavior and
640 never will. The ACPI specification will be updated for ACPI 6.2 to remove
641 this support. Therefore, the change was reverted to the original ACPICA
644 ACPICA now supports the GCC 6 compiler.
646 Current Release: (Note: build changes increased sizes)
647 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
648 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
650 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
651 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
654 2) iASL Compiler/Disassembler and Tools:
656 Completed full support for the ACPI 6.0 External() AML opcode. The
657 compiler emits an external AML opcode for each ASL External statement.
658 This opcode is used by the disassembler to assist with the disassembly of
659 external control methods by specifying the required number of arguments
660 for the method. AML interpreters do not use this opcode. To ensure that
661 interpreters do not even see the opcode, a block of one or more external
662 opcodes is surrounded by an "If(0)" construct. As this feature becomes
663 commonly deployed in BIOS code, the ability of disassemblers to correctly
664 disassemble AML code will be greatly improved. David Box.
666 iASL: Implemented support for an optional cross-reference output file.
667 The -lx option will create a the cross-reference file with the suffix
668 "xrf". Three different types of cross-reference are created in this file:
669 - List of object references made from within each control method
670 - Invocation (caller) list for each user-defined control method
671 - List of references to each non-method object in the namespace
673 iASL: Method invocations as ASL Target operands are now disallowed and
674 flagged as errors in preparation for ACPI 6.2 (see the description of the
677 ----------------------------------------
678 8 January 2016. Summary of changes for version 20160108:
680 1) ACPICA kernel-resident subsystem:
682 Updated all ACPICA copyrights and signons to 2016: Added the 2016
683 copyright to all source code module headers and utility/tool signons.
684 This includes the standard Linux dual-license header. This affects
685 virtually every file in the ACPICA core subsystem, iASL compiler, all
686 ACPICA utilities, and the ACPICA test suite.
688 Fixed a regression introduced in version 20151218 concerning the
689 execution of so-called module-level ASL/AML code. Namespace objects
690 created under a module-level If() construct were not properly/fully
691 entered into the namespace and could cause an interpreter fault when
694 Example Code and Data Size: These are the sizes for the OS-independent
695 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
696 debug version of the code includes the debug output trace mechanism and
697 has a much larger code and data size.
700 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
701 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
703 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
704 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
707 2) iASL Compiler/Disassembler and Tools:
709 Fixed a problem with the compilation of the GpioIo and GpioInt resource
710 descriptors. The _PIN field name was incorrectly defined to be an array
711 of 32-bit values, but the _PIN values are in fact 16 bits each. This
712 would cause incorrect bit width warnings when using Word (16-bit) fields
713 to access the descriptors.
716 ----------------------------------------
717 18 December 2015. Summary of changes for version 20151218:
719 1) ACPICA kernel-resident subsystem:
721 Implemented per-AML-table execution of "module-level code" as individual
722 ACPI tables are loaded into the namespace during ACPICA initialization.
723 In other words, any module-level code within an AML table is executed
724 immediately after the table is loaded, instead of batched and executed
725 after all of the tables have been loaded. This provides compatibility
726 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
729 To fully support the feature above, the default operation region handlers
730 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
731 installed before any ACPI tables are loaded. This enables module-level
732 code to access these address spaces during the table load and module-
733 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
736 Implemented several changes to the internal _REG support in conjunction
737 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
738 utilities for the changes above. Although these tools were changed, host
739 operating systems that simply use the default handlers for SystemMemory,
740 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
742 For example, in the code below, DEV1 is conditionally added to the
743 namespace by the DSDT via module-level code that accesses an operation
744 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
745 created immediately after the DSDT is loaded in order for the SSDT to
746 successfully reference DEV1. Previously, this code would cause an
747 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
748 fully supported by ACPICA.
750 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
752 OperationRegion (OPR1, SystemMemory, 0x400, 32)
753 Field (OPR1, AnyAcc, NoLock, Preserve)
764 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
766 External (\DEV1, DeviceObj)
772 Fixed an AML interpreter problem where control method invocations were
773 not handled correctly when the invocation was itself a SuperName argument
774 to another ASL operator. In these cases, the method was not invoked.
775 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
783 Signal, Release, Reset
786 Implemented automatic String-to-ObjectReference conversion support for
787 packages returned by predefined names (such as _DEP). A common BIOS error
788 is to add double quotes around an ObjectReference namepath, which turns
789 the reference into an unexpected string object. This support detects the
790 problem and corrects it before the package is returned to the caller that
791 invoked the method. Lv Zheng.
793 Implemented extensions to the Concatenate operator. Concatenate now
794 accepts any type of object, it is not restricted to simply
795 Integer/String/Buffer. For objects other than these 3 basic data types,
796 the argument is treated as a string containing the name of the object
797 type. This expands the utility of Concatenate and the Printf/Fprintf
798 macros. ACPICA BZ 1222.
800 Cleaned up the output of the ASL Debug object. The timer() value is now
801 optional and no longer emitted by default. Also, the basic data types of
802 Integer/String/Buffer are simply emitted as their values, without a data
803 type string -- since the data type is obvious from the output. ACPICA BZ
806 Example Code and Data Size: These are the sizes for the OS-independent
807 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
808 debug version of the code includes the debug output trace mechanism and
809 has a much larger code and data size.
812 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
813 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
815 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
816 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
819 2) iASL Compiler/Disassembler and Tools:
821 iASL: Fixed some issues with the ASL Include() operator. This operator
822 was incorrectly defined in the iASL parser rules, causing a new scope to
823 be opened for the code within the include file. This could lead to
824 several issues, including allowing ASL code that is technically illegal
825 and not supported by AML interpreters. Note, this does not affect the
826 related #include preprocessor operator. ACPICA BZ 1212.
828 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
829 operator is essentially an ASL macro since there is no AML opcode
830 associated with it. The code emitted by the iASL compiler for ElseIf is
831 an Else opcode followed immediately by an If opcode. The disassembler
832 will now emit an ElseIf if it finds an Else immediately followed by an
833 If. This simplifies the decoded ASL, especially for deeply nested
834 If..Else and large Switch constructs. Thus, the disassembled code more
835 closely follows the original source ASL. ACPICA BZ 1211. Example:
847 ElseIf (Arg0 == 0x02)
852 AcpiExec: Added support for the new module level code behavior and the
853 early region installation. This required a small change to the
854 initialization, since AcpiExec must install its own operation region
857 AcpiExec: Added support to make the debug object timer optional. Default
858 is timer disabled. This cleans up the debug object output -- the timer
861 AcpiExec: Multiple ACPI tables are now loaded in the order that they
862 appear on the command line. This can be important when there are
863 interdependencies/references between the tables.
865 iASL/Templates. Add support to generate template files with multiple
866 SSDTs within a single output file. Also added ommand line support to
867 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
871 ----------------------------------------
872 24 November 2015. Summary of changes for version 20151124:
874 1) ACPICA kernel-resident subsystem:
876 Fixed a possible regression for a previous update to FADT handling. The
877 FADT no longer has a fixed table ID, causing some issues with code that
878 was hardwired to a specific ID. Lv Zheng.
880 Fixed a problem where the method auto-serialization could interfere with
881 the current SyncLevel. This change makes the auto-serialization support
882 transparent to the SyncLevel support and management.
884 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
885 interface is intended for early access to the namespace during the
886 initial namespace device discovery walk. The _SUB method has been seen to
887 access operation regions in some cases, causing errors because the
888 operation regions are not fully initialized.
890 AML Debugger: Fixed some issues with the terminate/quit/exit commands
891 that can cause faults. Lv Zheng.
893 AML Debugger: Add thread ID support so that single-step mode only applies
894 to the AML Debugger thread. This prevents runtime errors within some
897 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
898 methods that are invoked by this interface are optional, removed warnings
899 emitted for the case where one or more of these methods do not exist.
900 ACPICA BZ 1208, original change by Prarit Bhargava.
902 Made a major pass through the entire ACPICA source code base to
903 standardize formatting that has diverged a bit over time. There are no
904 functional changes, but this will of course cause quite a few code
905 differences from the previous ACPICA release.
907 Example Code and Data Size: These are the sizes for the OS-independent
908 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
909 debug version of the code includes the debug output trace mechanism and
910 has a much larger code and data size.
913 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
914 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
916 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
917 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
920 2) iASL Compiler/Disassembler and Tools:
922 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
923 definition blocks within a single ASL file and the resulting AML file.
924 Support for this type of file was also added to the various tools that
925 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
926 example code below shows two definition blocks within the same file:
928 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
932 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
936 iASL: Enhanced typechecking for the Name() operator. All expressions for
937 the value of the named object must be reduced/folded to a single constant
938 at compile time, as per the ACPI specification (the AML definition of
941 iASL: Fixed some code indentation issues for the -ic and -ia options (C
942 and assembly headers). Now all emitted code correctly begins in column 1.
944 iASL: Added an error message for an attempt to open a Scope() on an
945 object defined in an SSDT. The DSDT is always loaded into the namespace
946 first, so any attempt to open a Scope on an SSDT object will fail at
950 ----------------------------------------
951 30 September 2015. Summary of changes for version 20150930:
953 1) ACPICA kernel-resident subsystem:
955 Debugger: Implemented several changes and bug fixes to assist support for
956 the in-kernel version of the AML debugger. Lv Zheng.
957 - Fix the "predefined" command for in-kernel debugger.
958 - Do not enter debug command loop for the help and version commands.
959 - Disallow "execute" command during execution/single-step of a method.
961 Interpreter: Updated runtime typechecking for all operators that have
962 target operands. The operand is resolved and validated that it is legal.
963 For example, the target cannot be a non-data object such as a Device,
964 Mutex, ThermalZone, etc., as per the ACPI specification.
966 Debugger: Fixed the double-mutex user I/O handshake to work when local
967 deadlock detection is enabled.
969 Debugger: limited display of method locals and arguments (LocalX and
970 ArgX) to only those that have actually been initialized. This prevents
971 lines of extraneous output.
973 Updated the definition of the NFIT table to correct the bit polarity of
974 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
976 Example Code and Data Size: These are the sizes for the OS-independent
977 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
978 debug version of the code includes the debug output trace mechanism and
979 has a much larger code and data size.
982 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
983 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
985 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
986 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
989 2) iASL Compiler/Disassembler and Tools:
991 iASL: Improved the compile-time typechecking for operands of many of the
994 -- Added an option to disable compiler operand/operator typechecking (-
997 -- For the following operators, the TermArg operands are now validated
998 when possible to be Integer data objects: BankField, OperationRegion,
999 DataTableRegion, Buffer, and Package.
1001 -- Store (Source, Target): Both the source and target operands are
1002 resolved and checked that the operands are both legal. For example,
1003 neither operand can be a non-data object such as a Device, Mutex,
1004 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1005 operator can be used to store an object to any type of target object.
1007 -- Store (Source, Target): If the source is a Package object, the target
1008 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1009 is a Package, the source must also be a Package.
1011 -- Store (Source, Target): A warning is issued if the source and target
1012 resolve to the identical named object.
1014 -- Store (Source, <method invocation>): An error is generated for the
1015 target method invocation, as this construct is not supported by the AML
1018 -- For all ASL math and logic operators, the target operand must be a
1019 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1020 includes the function return value also.
1022 -- External declarations are also included in the typechecking where
1023 possible. External objects defined using the UnknownObj keyword cannot be
1024 typechecked, however.
1026 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1028 - Legacy code: Index(PKG1, 3)
1029 - New ASL+ code: PKG1[3]
1030 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1033 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1034 spaces were inadvertently appended to the filename, causing file access
1035 and deletion problems on some systems.
1037 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1038 possible compiler output files when building the test suite -- thus
1039 exercising these features of the compiler. These files are automatically
1040 deleted when the test suite exits.
1043 ----------------------------------------
1044 18 August 2015. Summary of changes for version 20150818:
1046 1) ACPICA kernel-resident subsystem:
1048 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1049 Zheng. ACPICA BZ 1186.
1051 Completed development to ensure that the ACPICA Disassembler and Debugger
1052 are fully standalone components of ACPICA. Removed cross-component
1053 dependences. Lv Zheng.
1055 The max-number-of-AML-loops is now runtime configurable (previously was
1056 compile-time only). This is essentially a loop timeout to force-abort
1057 infinite AML loops. ACPCIA BZ 1192.
1059 Debugger: Cleanup output to dump ACPI names and namepaths without any
1060 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1062 Removed unnecessary conditional compilations across the Debugger and
1063 Disassembler components where entire modules could be left uncompiled.
1065 The aapits test is deprecated and has been removed from the ACPICA git
1066 tree. The test has never been completed and has not been maintained, thus
1067 becoming rather useless. ACPICA BZ 1015, 794.
1069 A batch of small changes to close bugzilla and other reports:
1070 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1071 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1072 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1073 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1075 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1077 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1079 - Debugger: Split debugger initialization/termination interfaces. Lv
1081 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1083 - AcpiExec: Add debug message during _REG method phase during table
1085 - AcpiNames: Fix a regression where some output was missing and no longer
1087 - Debugger: General cleanup and simplification. Lv Zheng.
1088 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1090 Example Code and Data Size: These are the sizes for the OS-independent
1091 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1092 debug version of the code includes the debug output trace mechanism and
1093 has a much larger code and data size.
1096 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1097 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1099 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1100 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1103 2) iASL Compiler/Disassembler and Tools:
1105 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1106 were not handled properly and caused load errors. Now, properly invoke
1107 and use the ACPICA auto-reallocate mechanism for ACPI table data
1108 structures. ACPICA BZ 1188
1110 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1113 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1114 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1115 executed during initialization. ACPICA BZ 1187, 1189.
1117 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1118 that corresponds to each disassembled ASL statement, to simplify
1119 debugging. ACPICA BZ 1191.
1121 Debugger: Add option to the "objects" command to display a summary of the
1122 current namespace objects (Object type and count). This is displayed if
1123 the command is entered with no arguments.
1125 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1128 ----------------------------------------
1129 17 July 2015. Summary of changes for version 20150717:
1131 1) ACPICA kernel-resident subsystem:
1133 Improved the partitioning between the Debugger and Disassembler
1134 components. This allows the Debugger to be used standalone within kernel
1135 code without the Disassembler (which is used for single stepping also).
1136 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1138 Debugger: Implemented a new command to trace the execution of control
1139 methods (Trace). This is especially useful for the in-kernel version of
1140 the debugger when file I/O may not be available for method trace output.
1141 See the ACPICA reference for more information. Lv Zheng.
1143 Moved all C library prototypes (used for the local versions of these
1144 functions when requested) to a new header, acclib.h
1145 Cleaned up the use of non-ANSI C library functions. These functions are
1146 implemented locally in ACPICA. Moved all such functions to a common
1147 source file, utnonansi.c
1149 Debugger: Fixed a problem with the "!!" command (get last command
1150 executed) where the debugger could enter an infinite loop and eventually
1153 Removed the use of local macros that were used for some of the standard C
1154 library functions to automatically cast input parameters. This mostly
1155 affected the is* functions where the input parameter is defined to be an
1156 int. This required a few modifications to the main ACPICA source code to
1157 provide casting for these functions and eliminate possible compiler
1158 warnings for these parameters.
1160 Across the source code, added additional status/error checking to resolve
1161 issues discovered by static source code analysis tools such as Coverity.
1163 Example Code and Data Size: These are the sizes for the OS-independent
1164 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1165 debug version of the code includes the debug output trace mechanism and
1166 has a much larger code and data size.
1169 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1170 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1172 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1173 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1176 2) iASL Compiler/Disassembler and Tools:
1178 iASL: Fixed a regression where the device map file feature no longer
1179 worked properly when used in conjunction with the disassembler. It only
1180 worked properly with the compiler itself.
1182 iASL: Implemented a new warning for method LocalX variables that are set
1183 but never used (similar to a C compiler such as gcc). This also applies
1184 to ArgX variables that are not defined by the parent method, and are
1185 instead (legally) used as local variables.
1187 iASL/Preprocessor: Finished the pass-through of line numbers from the
1188 preprocessor to the compiler. This ensures that compiler errors/warnings
1189 have the correct original line numbers and filenames, regardless of any
1192 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1193 pass-through of comments to the preprocessor output file (which becomes
1194 the compiler input file). Also fixed a problem with // comments that
1195 appear after a math expression.
1197 iASL: Added support for the TCPA server table to the table compiler and
1198 template generator. (The client table was already previously supported)
1200 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1201 identify the iASL compiler.
1203 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1204 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1207 AcpiHelp: Update to expand help messages for the iASL preprocessor
1211 ----------------------------------------
1212 19 June 2015. Summary of changes for version 20150619:
1214 Two regressions in version 20150616 have been addressed:
1216 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1217 etc.) This update changes ACPICA to only use the standard headers for
1218 functions, or the prototypes for the local versions of the C library
1219 functions. Across the source code, this required some additional casts
1220 for some Clib invocations for portability. Moved all local prototypes to
1221 a new file, acclib.h
1223 Fixes several problems with recent changes to the handling of the FACS
1224 table that could cause some systems not to boot.
1227 ----------------------------------------
1228 16 June 2015. Summary of changes for version 20150616:
1231 1) ACPICA kernel-resident subsystem:
1233 Across the entire ACPICA source code base, the various macros for the C
1234 library functions (such as ACPI_STRLEN, etc.) have been removed and
1235 replaced by the standard C library names (strlen, etc.) The original
1236 purpose for these macros is no longer applicable. This simplification
1237 reduces the number of macros used in the ACPICA source code
1238 significantly, improving readability and maintainability.
1240 Implemented support for a new ACPI table, the OSDT. This table, the
1241 "override" SDT, can be loaded directly by the host OS at boot time. It
1242 enables the replacement of existing namespace objects that were installed
1243 via the DSDT and/or SSDTs. The primary purpose for this is to replace
1244 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
1245 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
1248 Added support for systems with (improperly) two FACS tables -- a "32-bit"
1249 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
1250 X field). This change will support both automatically. There continues to
1251 be systems found with this issue. This support requires a change to the
1252 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
1253 been added to allow the host to select which FACS is desired
1254 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
1257 Added a new feature to allow for systems that do not contain an FACS.
1258 Although this is already supported on hardware-reduced platforms, the
1259 feature has been extended for all platforms. The reasoning is that we do
1260 not want to abort the entire ACPICA initialization just because the
1261 system is seriously buggy and has no FACS.
1263 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
1264 not correctly transcribed from the ACPI specification in ACPICA version
1267 Implemented support for the _CLS object in the AcpiGetObjectInfo external
1270 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
1271 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
1272 compiler also updated. Note: The TCPA "server" table is not supported by
1273 the disassembler/table-compiler at this time.
1275 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
1277 Example Code and Data Size: These are the sizes for the OS-independent
1278 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1279 debug version of the code includes the debug output trace mechanism and
1280 has a much larger code and data size.
1283 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1284 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1286 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1287 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1290 2) iASL Compiler/Disassembler and Tools:
1292 Disassembler: Fixed a problem with the new symbolic operator disassembler
1293 where incorrect ASL code could be emitted in some cases for the "non-
1294 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
1295 ShiftRight. The actual problem cases seem to be rather unusual in common
1296 ASL code, however. David Box.
1298 Modified the linux version of acpidump to obtain ACPI tables from not
1299 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
1302 iASL: Fixed a problem where the user preprocessor output file (.i)
1303 contained extra data that was not expected. The compiler was using this
1304 file as a temporary file and passed through #line directives in order to
1305 keep compiler error messages in sync with the input file and line number
1306 across multiple include files. The (.i) is no longer a temporary file as
1307 the compiler uses a new, different file for the original purpose.
1309 iASL: Fixed a problem where comments within the original ASL source code
1310 file were not passed through to the preprocessor output file, nor any
1313 iASL: Fixed some issues for the handling of the "#include" preprocessor
1314 directive and the similar (but not the same) "Include" ASL operator.
1316 iASL: Add support for the new OSDT in both the disassembler and compiler.
1318 iASL: Fixed a problem with the constant folding support where a Buffer
1319 object could be incorrectly generated (incorrectly formed) during a
1320 conversion to a Store() operator.
1322 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
1323 description text for the _REV predefined name. _REV now permanently
1324 returns 2, as per the ACPI 6.0 specification.
1326 Debugger: Enhanced the output of the Debug ASL object for references
1327 produced by the Index operator. For Buffers and strings, only output the
1328 actual byte pointed to by the index. For packages, only print the single
1329 package element decoded by the index. Previously, the entire
1330 buffer/string/package was emitted.
1332 iASL/Table-compiler: Fixed a regression where the "generic" data types
1333 were no longer recognized, causing errors.
1336 ----------------------------------------
1337 15 May 2015. Summary of changes for version 20150515:
1339 This release implements most of ACPI 6.0 as described below.
1341 1) ACPICA kernel-resident subsystem:
1343 Implemented runtime argument checking and return value checking for all
1344 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
1345 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
1347 Example Code and Data Size: These are the sizes for the OS-independent
1348 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1349 debug version of the code includes the debug output trace mechanism and
1350 has a much larger code and data size.
1353 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1354 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1356 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1357 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1360 2) iASL Compiler/Disassembler and Tools:
1362 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
1363 names (argument count validation and return value typechecking.)
1365 iASL disassembler and table compiler: implemented support for all new
1366 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
1368 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
1371 iASL preprocessor: Added a new directive to enable inclusion of binary
1372 blobs into ASL code. The new directive is #includebuffer. It takes a
1373 binary file as input and emits a named ascii buffer object into the ASL
1376 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
1378 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
1381 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
1385 ----------------------------------------
1386 10 April 2015. Summary of changes for version 20150410:
1388 Reverted a change introduced in version 20150408 that caused
1389 a regression in the disassembler where incorrect operator
1390 symbols could be emitted.
1393 ----------------------------------------
1394 08 April 2015. Summary of changes for version 20150408:
1397 1) ACPICA kernel-resident subsystem:
1399 Permanently set the return value for the _REV predefined name. It now
1400 returns 2 (was 5). This matches other ACPI implementations. _REV will be
1401 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
1402 for ACPI 2.0 and later. It should never be used to differentiate or
1403 identify operating systems.
1405 Added the "Windows 2015" string to the _OSI support. ACPICA will now
1406 return TRUE to a query with this string.
1408 Fixed several issues with the local version of the printf function.
1410 Added the C99 compiler option (-std=c99) to the Unix makefiles.
1413 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
1414 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
1416 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1417 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1420 2) iASL Compiler/Disassembler and Tools:
1422 iASL: Implemented an enhancement to the constant folding feature to
1423 transform the parse tree to a simple Store operation whenever possible:
1424 Add (2, 3, X) ==> is converted to: Store (5, X)
1425 X = 2 + 3 ==> is converted to: Store (5, X)
1427 Updated support for the SLIC table (Software Licensing Description Table)
1428 in both the Data Table compiler and the disassembler. The SLIC table
1429 support now conforms to "Microsoft Software Licensing Tables (SLIC and
1430 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
1431 following the ACPI header is now defined to be "Proprietary Data", and as
1432 such, can only be entered or displayed as a hex data block.
1434 Implemented full support for the MSDM table as described in the document
1435 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
1436 following the ACPI header is defined to be "Proprietary Data", and can
1437 only be entered or displayed as a hex data block.
1439 Implemented the -Pn option for the iASL Table Compiler (was only
1440 implemented for the ASL compiler). This option disables the iASL
1443 Disassembler: For disassembly of Data Tables, added a comment field
1444 around the Ascii equivalent data that is emitted as part of the "Raw
1445 Table Data" block. This prevents the iASL Preprocessor from possible
1446 confusion if/when the table is compiled.
1448 Disassembler: Added an option (-df) to force the disassembler to assume
1449 that the table being disassembled contains valid AML. This feature is
1450 useful for disassembling AML files that contain ACPI signatures other
1451 than DSDT or SSDT (such as OEMx or other signatures).
1453 Changes for the EFI version of the tools:
1454 1) Fixed a build error/issue
1455 2) Fixed a cast warning
1457 iASL: Fixed a path issue with the __FILE__ operator by making the
1458 directory prefix optional within the internal SplitInputFilename
1461 Debugger: Removed some unused global variables.
1463 Tests: Updated the makefile for proper generation of the AAPITS suite.
1466 ----------------------------------------
1467 04 February 2015. Summary of changes for version 20150204:
1469 ACPICA kernel-resident subsystem:
1471 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1472 copyright to all module headers and signons, including the standard Linux
1473 header. This affects virtually every file in the ACPICA core subsystem,
1474 iASL compiler, all ACPICA utilities, and the test suites.
1476 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
1477 A raw gpe handling mechanism was created to allow better handling of GPE
1478 storms that aren't easily managed by the normal handler. The raw handler
1479 allows disabling/renabling of the the GPE so that interrupt storms can be
1480 avoided in cases where events cannot be timely serviced. In this
1481 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
1482 GPE. This API will leave the reference counts undisturbed, thereby
1483 preventing unintentional clearing of the GPE when the intent in only to
1484 temporarily disable it. Raw handlers allow enabling and disabling of a
1485 GPE by removing GPE register locking. As such, raw handlers much provide
1486 their own locks while using GPE API's to protect access to GPE data
1490 Events: Always modify GPE registers under the GPE lock.
1491 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
1492 values. Reported as bug by joe.liu@apple.com.
1494 Unix makefiles: Separate option to disable optimizations and
1495 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
1496 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
1497 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
1498 errors when building ACPICA. This allows disabling the option without
1499 also having to disable optimazations.
1503 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1504 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
1507 --------------------------------------
1508 07 November 2014. Summary of changes for version 20141107:
1510 This release is available at https://acpica.org/downloads
1512 This release introduces and implements language extensions to ASL that
1513 provide support for symbolic ("C-style") operators and expressions. These
1514 language extensions are known collectively as ASL+.
1517 1) iASL Compiler/Disassembler and Tools:
1519 Disassembler: Fixed a problem with disassembly of the UartSerialBus
1520 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
1523 Disassembler: Fixed the Unicode macro support to add escape sequences.
1524 All non-printable ASCII values are emitted as escape sequences, as well
1525 as the standard escapes for quote and backslash. Ensures that the
1526 disassembled macro can be correctly recompiled.
1528 iASL: Added Printf/Fprintf macros for formatted output. These macros are
1529 translated to existing AML Concatenate and Store operations. Printf
1530 writes to the ASL Debug object. Fprintf allows the specification of an
1531 ASL name as the target. Only a single format specifier is required, %o,
1532 since the AML interpreter dynamically converts objects to the required
1535 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1536 (Concatenate (Concatenate (Concatenate ("", Arg0),
1537 ": Unexpected value for "), Arg1), ", "), Arg2),
1538 " at line "), Arg3), Debug)
1540 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
1541 Arg0, Arg1, Arg2, Arg3)
1543 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1544 ("", Arg1), ": "), Arg0), " Successful"), STR1)
1546 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
1548 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
1549 ASL parse tree before the AML code is generated. This allows blocks of
1550 ASL code to be removed in order to help locate and identify problem
1551 devices and/or code. David E. Box.
1553 AcpiExec: Added support (-fi) for an optional namespace object
1554 initialization file. This file specifies initial values for namespace
1555 objects as necessary for debugging and testing different ASL code paths
1556 that may be taken as a result of BIOS options.
1559 2) Overview of symbolic operator support for ASL (ASL+)
1560 -------------------------------------------------------
1562 As an extension to the ASL language, iASL implements support for symbolic
1563 (C-style) operators for math and logical expressions. This can greatly
1564 simplify ASL code as well as improve both readability and
1565 maintainability. These language extensions can exist concurrently with
1566 all legacy ASL code and expressions.
1568 The symbolic extensions are 100% compatible with existing AML
1569 interpreters, since no new AML opcodes are created. To implement the
1570 extensions, the iASL compiler transforms the symbolic expressions into
1571 the legacy ASL/AML equivalents at compile time.
1573 Full symbolic expressions are supported, along with the standard C
1574 precedence and associativity rules.
1576 Full disassembler support for the symbolic expressions is provided, and
1577 creates an automatic migration path for existing ASL code to ASL+ code
1578 via the disassembly process. By default, the disassembler now emits ASL+
1579 code with symbolic expressions. An option (-dl) is provided to force the
1580 disassembler to emit legacy ASL code if desired.
1582 Below is the complete list of the currently supported symbolic operators
1583 with examples. See the iASL User Guide for additional information.
1586 ASL+ Syntax Legacy ASL Equivalent
1587 ----------- ---------------------
1591 Z = X + Y Add (X, Y, Z)
1592 Z = X - Y Subtract (X, Y, Z)
1593 Z = X * Y Multiply (X, Y, Z)
1594 Z = X / Y Divide (X, Y, , Z)
1595 Z = X % Y Mod (X, Y, Z)
1596 Z = X << Y ShiftLeft (X, Y, Z)
1597 Z = X >> Y ShiftRight (X, Y, Z)
1598 Z = X & Y And (X, Y, Z)
1599 Z = X | Y Or (X, Y, Z)
1600 Z = X ^ Y Xor (X, Y, Z)
1605 // Logical operators
1607 (X == Y) LEqual (X, Y)
1608 (X != Y) LNotEqual (X, Y)
1609 (X < Y) LLess (X, Y)
1610 (X > Y) LGreater (X, Y)
1611 (X <= Y) LLessEqual (X, Y)
1612 (X >= Y) LGreaterEqual (X, Y)
1613 (X && Y) LAnd (X, Y)
1617 // Assignment and compound assignment operations
1620 X += Y Add (X, Y, X)
1621 X -= Y Subtract (X, Y, X)
1622 X *= Y Multiply (X, Y, X)
1623 X /= Y Divide (X, Y, , X)
1624 X %= Y Mod (X, Y, X)
1625 X <<= Y ShiftLeft (X, Y, X)
1626 X >>= Y ShiftRight (X, Y, X)
1627 X &= Y And (X, Y, X)
1629 X ^= Y Xor (X, Y, X)
1636 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
1637 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
1639 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
1641 And (MEMB, 0xFFFFFFF0, SRMB)
1642 Store (MEMB, Local2)
1643 Store (PDBM, Local1)
1644 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
1646 Or (PDBM, 0x02, PDBM)
1650 If (((R510 & 0x03FB) == 0x02E0) ||
1651 ((R520 & 0x03FB) == 0x02E0) ||
1652 ((R530 & 0x03FB) == 0x02E0) ||
1653 ((R540 & 0x03FB) == 0x02E0))
1655 SRMB = (MEMB & 0xFFFFFFF0)
1658 PDBM &= 0xFFFFFFFFFFFFFFF9
1664 Store (0x1234, Local1)
1665 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
1666 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
1667 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
1668 Store (Index (PKG1, 0x03), Local6)
1669 Store (Add (Local3, Local2), Debug)
1670 Add (Local1, 0x0F, Local2)
1671 Add (Local1, Multiply (Local2, Local3), Local2)
1672 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
1676 Local3 = (((Local1 + TEST) + 0x20) * Local2)
1677 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
1678 Local3 = (Local1 + (TEST + (0x20 * Local2)))
1679 Local6 = Index (PKG1, 0x03)
1680 Debug = (Local3 + Local2)
1681 Local2 = (Local1 + 0x0F)
1682 Local2 = (Local1 + (Local2 * Local3))
1683 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
1686 ----------------------------------------
1687 26 September 2014. Summary of changes for version 20140926:
1689 1) ACPICA kernel-resident subsystem:
1691 Updated the GPIO operation region handler interface (GeneralPurposeIo).
1692 In order to support GPIO Connection objects with multiple pins, along
1693 with the related Field objects, the following changes to the interface
1694 have been made: The Address is now defined to be the offset in bits of
1695 the field unit from the previous invocation of a Connection. It can be
1696 viewed as a "Pin Number Index" into the connection resource descriptor.
1697 The BitWidth is the exact bit width of the field. It is usually one bit,
1698 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
1699 additional information and examples.
1701 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
1702 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
1703 by the firmware), so that they cannot fire until they are enabled via
1704 AcpiUpdateAllGpes. Rafael J. Wysocki.
1706 Added a new return flag for the Event/GPE status interfaces --
1707 AcpiGetEventStatus and AcpiGetGpeStatus. The new
1708 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
1709 GPE currently has a handler associated with it, and can thus actually
1710 affect the system. Lv Zheng.
1712 Example Code and Data Size: These are the sizes for the OS-independent
1713 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1714 debug version of the code includes the debug output trace mechanism and
1715 has a much larger code and data size.
1718 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1719 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1721 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1722 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1724 2) iASL Compiler/Disassembler and Tools:
1726 iASL: Fixed a memory allocation/free regression introduced in 20140828
1727 that could cause the compiler to crash. This was introduced inadvertently
1728 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
1731 iASL: Removed two error messages that have been found to create false
1732 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
1733 1) Illegal forward reference within a method
1734 2) Illegal reference across two methods
1736 iASL: Implemented a new option (-lm) to create a hardware mapping file
1737 that summarizes all GPIO, I2C, SPI, and UART connections. This option
1738 works for both the compiler and disassembler. See the iASL compiler user
1739 guide for additional information and examples (section 6.4.6).
1741 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
1742 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
1743 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
1745 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
1746 unless STDIN is actually a terminal. Assists with batch-mode processing.
1749 Disassembler/AcpiHelp: Added another large group of recognized _HID
1753 ----------------------------------------
1754 28 August 2014. Summary of changes for version 20140828:
1756 1) ACPICA kernel-resident subsystem:
1758 Fixed a problem related to the internal use of the Timer() operator where
1759 a 64-bit divide could cause an attempted link to a double-precision math
1760 library. This divide is not actually necessary, so the code was
1761 restructured to eliminate it. Lv Zheng.
1763 ACPI 5.1: Added support for the runtime validation of the _DSD package
1764 (similar to the iASL support).
1766 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
1767 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
1769 Example Code and Data Size: These are the sizes for the OS-independent
1770 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1771 debug version of the code includes the debug output trace mechanism and
1772 has a much larger code and data size.
1775 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1776 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1778 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
1779 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1781 2) iASL Compiler/Disassembler and Tools:
1783 AcpiExec: Fixed a problem on unix systems where the original terminal
1784 state was not always properly restored upon exit. Seen when using the -v
1785 option. ACPICA BZ 1104.
1787 iASL: Fixed a problem with the validation of the ranges/length within the
1788 Memory24 resource descriptor. There was a boundary condition when the
1789 range was equal to the (length -1) caused by the fact that these values
1790 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
1792 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
1794 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
1796 now supported properly.
1798 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
1799 in the disassembler, data table compiler, and table template generator.
1801 iASL: Added a requirement for Device() objects that one of either a _HID
1802 or _ADR must exist within the scope of a Device, as per the ACPI
1803 specification. Remove a similar requirement that was incorrectly in place
1804 for the _DSD object.
1806 iASL: Added error detection for illegal named references within control
1807 methods that would cause runtime failures. Now trapped as errors are: 1)
1808 References to objects within a non-parent control method. 2) Forward
1809 references (within a method) -- for control methods, AML interpreters use
1810 a one-pass parse of control methods. ACPICA BZ 1008.
1812 iASL: Added error checking for dependencies related to the _PSx power
1813 methods. ACPICA BZ 1029.
1814 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
1816 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
1819 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
1820 deploying the existing object and string caches and adding new caches for
1823 iASL: Split the huge parser source file into multiple subfiles to improve
1824 manageability. Generation now requires the M4 macro preprocessor, which
1825 is part of the Bison distribution on both unix and windows platforms.
1827 AcpiSrc: Fixed and removed all extraneous warnings generated during
1828 entire ACPICA source code scan and/or conversion.
1831 ----------------------------------------
1833 24 July 2014. Summary of changes for version 20140724:
1835 The ACPI 5.1 specification has been released and is available at:
1836 http://uefi.org/specs/access
1839 0) ACPI 5.1 support in ACPICA:
1841 ACPI 5.1 is fully supported in ACPICA as of this release.
1843 New predefined names. Support includes iASL and runtime ACPICA
1845 _CCA (Cache Coherency Attribute).
1846 _DSD (Device-Specific Data). David Box.
1848 Modifications to existing ACPI tables. Support includes headers, iASL
1849 Data Table compiler, disassembler, and the template generator.
1850 FADT - New fields and flags. Graeme Gregory.
1851 GTDT - One new subtable and new fields. Tomasz Nowicki.
1852 MADT - Two new subtables. Tomasz Nowicki.
1853 PCCT - One new subtable.
1856 New notification type for System Resource Affinity change events.
1859 1) ACPICA kernel-resident subsystem:
1861 Fixed a regression introduced in 20140627 where a fault can happen during
1862 the deletion of Alias AML namespace objects. The problem affected both
1863 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
1865 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
1866 simple mechanism to enable wake GPEs that have no associated handler or
1867 control method. Rafael Wysocki.
1869 Updated the AcpiEnableGpe interface to disallow the enable if there is no
1870 handler or control method associated with the particular GPE. This will
1871 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
1873 Updated GPE handling and dispatch by disabling the GPE before clearing
1874 the status bit for edge-triggered GPEs. Lv Zheng.
1876 Added Timer() support to the AML Debug object. The current timer value is
1877 now displayed with each invocation of (Store to) the debug object to
1878 enable simple generation of execution times for AML code (method
1879 execution for example.) ACPICA BZ 1093.
1881 Example Code and Data Size: These are the sizes for the OS-independent
1882 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1883 debug version of the code includes the debug output trace mechanism and
1884 has a much larger code and data size.
1887 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
1888 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1890 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1891 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1894 2) iASL Compiler/Disassembler and Tools:
1896 Fixed an issue with the recently added local printf implementation,
1897 concerning width/precision specifiers that could cause incorrect output.
1898 Lv Zheng. ACPICA BZ 1094.
1900 Disassembler: Added support to detect buffers that contain UUIDs and
1901 disassemble them to an invocation of the ToUUID operator. Also emit
1902 commented descriptions of known ACPI-related UUIDs.
1904 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
1905 -u. Adds three new files.
1907 iASL: Update table compiler and disassembler for DMAR table changes that
1908 were introduced in September 2013. With assistance by David Woodhouse.
1910 ----------------------------------------
1911 27 June 2014. Summary of changes for version 20140627:
1913 1) ACPICA kernel-resident subsystem:
1915 Formatted Output: Implemented local versions of standard formatted output
1916 utilities such as printf, etc. Over time, it has been discovered that
1917 there are in fact many portability issues with printf, and the addition
1918 of this feature will fix/prevent these issues once and for all. Some
1919 known issues are summarized below:
1921 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
1922 for the Linux kernel and is %uI64 for some MSVC versions.
1923 2) Invoking printf consistently in a manner that is portable across both
1924 32-bit and 64-bit platforms is difficult at best in many situations.
1925 3) The output format for pointers varies from system to system (leading
1926 zeros especially), and leads to inconsistent output from ACPICA across
1928 4) Certain platform-specific printf formats may conflict with ACPICA use.
1929 5) If there is no local C library available, ACPICA now has local support
1932 -- To address these printf issues in a complete manner, ACPICA now
1933 directly implements a small subset of printf format specifiers, only
1934 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
1936 Implemented support for ACPICA generation within the EFI environment.
1937 Initially, the AcpiDump utility is supported in the UEFI shell
1938 environment. Lv Zheng.
1940 Added a new external interface, AcpiLogError, to improve ACPICA
1941 portability. This allows the host to redirect error messages from the
1942 ACPICA utilities. Lv Zheng.
1944 Added and deployed new OSL file I/O interfaces to improve ACPICA
1952 There are C library implementations of these functions in the new file
1953 service_layers/oslibcfs.c -- however, the functions can be implemented by
1954 the local host in any way necessary. Lv Zheng.
1956 Implemented a mechanism to disable/enable ACPI table checksum validation
1957 at runtime. This can be useful when loading tables very early during OS
1958 initialization when it may not be possible to map the entire table in
1959 order to compute the checksum. Lv Zheng.
1961 Fixed a buffer allocation issue for the Generic Serial Bus support.
1962 Originally, a fixed buffer length was used. This change allows for
1963 variable-length buffers based upon the protocol indicated by the field
1964 access attributes. Reported by Lan Tianyu. Lv Zheng.
1966 Fixed a problem where an object detached from a namespace node was not
1967 properly terminated/cleared and could cause a circular list problem if
1968 reattached. ACPICA BZ 1063. David Box.
1970 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
1972 Fixed a possible memory leak in an error return path within the function
1973 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
1975 Example Code and Data Size: These are the sizes for the OS-independent
1976 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1977 debug version of the code includes the debug output trace mechanism and
1978 has a much larger code and data size.
1981 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1982 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1984 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1985 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1988 2) iASL Compiler/Disassembler and Tools:
1990 Disassembler: Add dump of ASCII equivalent text within a comment at the
1991 end of each line of the output for the Buffer() ASL operator.
1993 AcpiDump: Miscellaneous changes:
1994 Fixed repetitive table dump in -n mode.
1995 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
1996 the ACPI 2.0 GUID fails.
1998 iASL: Fixed a problem where the compiler could fault if incorrectly given
1999 an acpidump output file as input. ACPICA BZ 1088. David Box.
2001 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2002 they are invoked without any arguments.
2004 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2005 1086. Colin Ian King.
2007 Disassembler: Cleaned up a block of code that extracts a parent Op
2008 object. Added a comment that explains that the parent is guaranteed to be
2009 valid in this case. ACPICA BZ 1069.
2012 ----------------------------------------
2013 24 April 2014. Summary of changes for version 20140424:
2015 1) ACPICA kernel-resident subsystem:
2017 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2018 Some of these tables are known to contain a trailing NULL entry. Lv
2021 Removed an extraneous error message for the case where there are a large
2022 number of system GPEs (> 124). This was the "32-bit FADT register is too
2023 long to convert to GAS struct" message, which is irrelevant for GPEs
2024 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2025 (limited capacity) GAS bit length. Also, several changes to ensure proper
2026 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2029 Implemented and deployed additional configuration support for the public
2030 ACPICA external interfaces. Entire classes of interfaces can now be
2031 easily modified or configured out, replaced by stubbed inline functions
2032 by default. Lv Zheng.
2034 Moved all public ACPICA runtime configuration globals to the public
2035 ACPICA external interface file for convenience. Also, removed some
2036 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2038 Documentation: Added a new section to the ACPICA reference describing the
2039 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2040 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2043 Example Code and Data Size: These are the sizes for the OS-independent
2044 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2045 debug version of the code includes the debug output trace mechanism and
2046 has a much larger code and data size.
2049 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2050 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2052 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2053 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2056 2) iASL Compiler/Disassembler and Tools:
2058 iASL and disassembler: Add full support for the LPIT table (Low Power
2059 Idle Table). Includes support in the disassembler, data table compiler,
2060 and template generator.
2063 1) Add option to force the use of the RSDT (over the XSDT).
2064 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2066 iASL: Add check for predefined packages that are too large. For
2067 predefined names that contain subpackages, check if each subpackage is
2068 too large. (Check for too small already exists.)
2070 Debugger: Updated the GPE command (which simulates a GPE by executing the
2071 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2072 to the GPE 0/1 FADT-defined blocks.
2074 Unix application OSL: Update line-editing support. Add additional error
2075 checking and take care not to reset terminal attributes on exit if they
2076 were never set. This should help guarantee that the terminal is always
2077 left in the previous state on program exit.
2080 ----------------------------------------
2081 25 March 2014. Summary of changes for version 20140325:
2083 1) ACPICA kernel-resident subsystem:
2085 Updated the auto-serialize feature for control methods. This feature
2086 automatically serializes all methods that create named objects in order
2087 to prevent runtime errors. The update adds support to ignore the
2088 currently executing AML SyncLevel when invoking such a method, in order
2089 to prevent disruption of any existing SyncLevel priorities that may exist
2090 in the AML code. Although the use of SyncLevels is relatively rare, this
2091 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2092 appear on some machines starting with the 20140214 release.
2094 Added a new external interface to allow the host to install ACPI tables
2095 very early, before the namespace is even created. AcpiInstallTable gives
2096 the host additional flexibility for ACPI table management. Tables can be
2097 installed directly by the host as if they had originally appeared in the
2098 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2099 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2100 with additional internal restructuring and cleanup. See the ACPICA
2101 Reference for interface details. Lv Zheng.
2103 Added validation of the checksum for all incoming dynamically loaded
2104 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2107 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2108 and GPE handler removal. Restructured calls to eliminate possible race
2109 conditions. Lv Zheng.
2111 Added a warning for the use/execution of the ASL/AML Unload (table)
2112 operator. This will help detect and identify machines that use this
2113 operator if and when it is ever used. This operator has never been seen
2114 in the field and the usage model and possible side-effects of the drastic
2115 runtime action of a full table removal are unknown.
2117 Reverted the use of #pragma push/pop which was introduced in the 20140214
2118 release. It appears that push and pop are not implemented by enough
2119 compilers to make the use of this feature feasible for ACPICA at this
2120 time. However, these operators may be deployed in a future ACPICA
2123 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2126 Source code generation:
2127 1) Disabled the use of the "strchr" macro for the gcc-specific
2128 generation. For some versions of gcc, this macro can periodically expose
2129 a compiler bug which in turn causes compile-time error(s).
2130 2) Added support for PPC64 compilation. Colin Ian King.
2132 Example Code and Data Size: These are the sizes for the OS-independent
2133 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2134 debug version of the code includes the debug output trace mechanism and
2135 has a much larger code and data size.
2138 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2139 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2141 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2142 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2145 2) iASL Compiler/Disassembler and Tools:
2147 Disassembler: Added several new features to improve the readability of
2148 the resulting ASL code. Extra information is emitted within comment
2149 fields in the ASL code:
2150 1) Known _HID/_CID values are decoded to descriptive text.
2151 2) Standard values for the Notify() operator are decoded to descriptive
2153 3) Target operands are expanded to full pathnames (in a comment) when
2156 Disassembler: Miscellaneous updates for extern() handling:
2157 1) Abort compiler if file specified by -fe option does not exist.
2158 2) Silence unnecessary warnings about argument count mismatches.
2159 3) Update warning messages concerning unresolved method externals.
2160 4) Emit "UnknownObj" keyword for externals whose type cannot be
2164 1) Added the -a option to display both the ASL syntax and the AML
2165 encoding for an input ASL operator. This effectively displays all known
2166 information about an ASL operator with one AcpiHelp invocation.
2167 2) Added substring match support (similar to a wildcard) for the -i
2168 (_HID/PNP IDs) option.
2170 iASL/Disassembler: Since this tool does not yet support execution on big-
2171 endian machines, added detection of endianness and an error message if
2172 execution is attempted on big-endian. Support for big-endian within iASL
2173 is a feature that is on the ACPICA to-be-done list.
2176 1) Remove option to extract binary files from an acpidump; this function
2177 is made obsolete by the AcpiXtract utility.
2178 2) General cleanup of open files and allocated buffers.
2181 ----------------------------------------
2182 14 February 2014. Summary of changes for version 20140214:
2184 1) ACPICA kernel-resident subsystem:
2186 Implemented a new mechanism to proactively prevent problems with ill-
2187 behaved reentrant control methods that create named ACPI objects. This
2188 behavior is illegal as per the ACPI specification, but is nonetheless
2189 frequently seen in the field. Previously, this could lead to an
2190 AE_ALREADY_EXISTS exception if the method was actually entered by more
2191 than one thread. This new mechanism detects such methods at table load
2192 time and marks them "serialized" to prevent reentrancy. A new global
2193 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2194 feature if desired. This mechanism and global option obsoletes and
2195 supersedes the previous AcpiGbl_SerializeAllMethods option.
2197 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2198 respond TRUE to _OSI queries with this string. It is the stated policy of
2199 ACPICA to add new strings to the _OSI support as soon as possible after
2200 they are defined. See the full ACPICA _OSI policy which has been added to
2201 the utilities/utosi.c file.
2203 Hardened/updated the _PRT return value auto-repair code:
2204 1) Do not abort the repair on a single subpackage failure, continue to
2205 check all subpackages.
2206 2) Add check for the minimum subpackage length (4).
2207 3) Properly handle extraneous NULL package elements.
2209 Added support to avoid the possibility of infinite loops when traversing
2210 object linked lists. Never allow an infinite loop, even in the face of
2211 corrupted object lists.
2213 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2214 pack(pop) directives to ensure that the ACPICA headers are independent of
2215 compiler settings or other host headers.
2217 Example Code and Data Size: These are the sizes for the OS-independent
2218 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2219 debug version of the code includes the debug output trace mechanism and
2220 has a much larger code and data size.
2223 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2224 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2226 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2227 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2230 2) iASL Compiler/Disassembler and Tools:
2232 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2233 first reserved field was incorrectly forced to have a value of zero. This
2234 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2236 Debugger: Added missing support for the "Extra" and "Data" subobjects
2237 when displaying object data.
2239 Debugger: Added support to display entire object linked lists when
2240 displaying object data.
2242 iASL: Removed the obsolete -g option to obtain ACPI tables from the
2243 Windows registry. This feature has been superseded by the acpidump
2247 ----------------------------------------
2248 14 January 2014. Summary of changes for version 20140114:
2250 1) ACPICA kernel-resident subsystem:
2252 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2253 copyright to all module headers and signons, including the standard Linux
2254 header. This affects virtually every file in the ACPICA core subsystem,
2255 iASL compiler, all ACPICA utilities, and the test suites.
2257 Improved parameter validation for AcpiInstallGpeBlock. Added the
2259 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
2260 2) There is not already a GPE block attached to the device.
2261 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
2264 Correctly support "references" in the ACPI_OBJECT. This change fixes the
2265 support to allow references (namespace nodes) to be passed as arguments
2266 to control methods via the evaluate object interface. This is probably
2267 most useful for testing purposes, however.
2269 Improved support for 32/64 bit physical addresses in printf()-like
2270 output. This change improves the support for physical addresses in printf
2271 debug statements and other output on both 32-bit and 64-bit hosts. It
2272 consistently outputs the appropriate number of bytes for each host. The
2273 %p specifier is unsatisfactory since it does not emit uniform output on
2274 all hosts/clib implementations (on some, leading zeros are not supported,
2275 leading to difficult-to-read output).
2277 Example Code and Data Size: These are the sizes for the OS-independent
2278 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2279 debug version of the code includes the debug output trace mechanism and
2280 has a much larger code and data size.
2283 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2284 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2286 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2287 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2290 2) iASL Compiler/Disassembler and Tools:
2292 iASL: Fix a possible fault when using the Connection() operator. Fixes a
2293 problem if the parent Field definition for the Connection operator refers
2294 to an operation region that does not exist. ACPICA BZ 1064.
2296 AcpiExec: Load of local test tables is now optional. The utility has the
2297 capability to load some various tables to test features of ACPICA.
2298 However, there are enough of them that the output of the utility became
2299 confusing. With this change, only the required local tables are displayed
2300 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
2301 line specification. This makes the default output simler and easier to
2302 understand. The -el command line option restores the original behavior
2303 for testing purposes.
2305 AcpiExec: Added support for overlapping operation regions. This change
2306 expands the simulation of operation regions by supporting regions that
2307 overlap within the given address space. Supports SystemMemory and
2308 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
2310 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
2311 allows AcpiExec to simulate these address spaces, similar to the current
2312 support for SystemMemory and SystemIO.
2314 Debugger: Added new command to read/write/compare all namespace objects.
2315 The command "test objects" will exercise the entire namespace by writing
2316 new values to each data object, and ensuring that the write was
2317 successful. The original value is then restored and verified.
2319 Debugger: Added the "test predefined" command. This change makes this
2320 test public and puts it under the new "test" command. The test executes
2321 each and every predefined name within the current namespace.
2324 ----------------------------------------
2325 18 December 2013. Summary of changes for version 20131218:
2327 Global note: The ACPI 5.0A specification was released this month. There
2328 are no changes needed for ACPICA since this release of ACPI is an
2329 errata/clarification release. The specification is available at
2333 1) ACPICA kernel-resident subsystem:
2335 Added validation of the XSDT root table if it is present. Some older
2336 platforms contain an XSDT that is ill-formed or otherwise invalid (such
2337 as containing some or all entries that are NULL pointers). This change
2338 adds a new function to validate the XSDT before actually using it. If the
2339 XSDT is found to be invalid, ACPICA will now automatically fall back to
2340 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
2341 ACPICA and enhanced by Lv Zheng and Bob Moore.
2343 Added a runtime option to ignore the XSDT and force the use of the RSDT.
2344 This change adds a runtime option that will force ACPICA to use the RSDT
2345 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
2346 requires that an XSDT be used instead of the RSDT, the XSDT has been
2347 found to be corrupt or ill-formed on some machines. Lv Zheng.
2349 Added a runtime option to favor 32-bit FADT register addresses over the
2350 64-bit addresses. This change adds an option to favor 32-bit FADT
2351 addresses when there is a conflict between the 32-bit and 64-bit versions
2352 of the same register. The default behavior is to use the 64-bit version
2353 in accordance with the ACPI specification. This can now be overridden via
2354 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
2356 During the change above, the internal "Convert FADT" and "Verify FADT"
2357 functions have been merged to simplify the code, making it easier to
2358 understand and maintain. ACPICA BZ 933.
2360 Improve exception reporting and handling for GPE block installation.
2361 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
2362 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
2364 Added helper macros to extract bus/segment numbers from the HEST table.
2365 This change adds two macros to extract the encoded bus and segment
2366 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
2367 Betty Dall <betty.dall@hp.com>
2369 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
2370 by ACPICA. It is not a public macro, so it should have no effect on
2371 existing OSV code. Lv Zheng.
2373 Example Code and Data Size: These are the sizes for the OS-independent
2374 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2375 debug version of the code includes the debug output trace mechanism and
2376 has a much larger code and data size.
2379 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2380 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2382 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2383 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2386 2) iASL Compiler/Disassembler and Tools:
2388 Disassembler: Improved pathname support for emitted External()
2389 statements. This change adds full pathname support for external names
2390 that have been resolved internally by the inclusion of additional ACPI
2391 tables (via the iASL -e option). Without this change, the disassembler
2392 can emit multiple externals for the same object, or it become confused
2393 when the Scope() operator is used on an external object. Overall, greatly
2394 improves the ability to actually recompile the emitted ASL code when
2395 objects a referenced across multiple ACPI tables. Reported by Michael
2396 Tsirkin (mst@redhat.com).
2398 Tests/ASLTS: Updated functional control suite to execute with no errors.
2399 David Box. Fixed several errors related to the testing of the interpreter
2400 slack mode. Lv Zheng.
2402 iASL: Added support to detect names that are declared within a control
2403 method, but are unused (these are temporary names that are only valid
2404 during the time the method is executing). A remark is issued for these
2405 cases. ACPICA BZ 1022.
2407 iASL: Added full support for the DBG2 table. Adds full disassembler,
2408 table compiler, and template generator support for the DBG2 table (Debug
2411 iASL: Added full support for the PCCT table, update the table definition.
2412 Updates the PCCT table definition in the actbl3.h header and adds table
2413 compiler and template generator support.
2415 iASL: Added an option to emit only error messages (no warnings/remarks).
2416 The -ve option will enable only error messages, warnings and remarks are
2417 suppressed. This can simplify debugging when only the errors are
2418 important, such as when an ACPI table is disassembled and there are many
2419 warnings and remarks -- but only the actual errors are of real interest.
2421 Example ACPICA code (source/tools/examples): Updated the example code so
2422 that it builds to an actual working program, not just example code. Added
2423 ACPI tables and execution of an example control method in the DSDT. Added
2424 makefile support for Unix generation.
2427 ----------------------------------------
2428 15 November 2013. Summary of changes for version 20131115:
2430 This release is available at https://acpica.org/downloads
2433 1) ACPICA kernel-resident subsystem:
2435 Resource Manager: Fixed loop termination for the "get AML length"
2436 function. The loop previously had an error termination on a NULL resource
2437 pointer, which can never happen since the loop simply increments a valid
2438 resource pointer. This fix changes the loop to terminate with an error on
2439 an invalid end-of-buffer condition. The problem can be seen as an
2440 infinite loop by callers to AcpiSetCurrentResources with an invalid or
2441 corrupted resource descriptor, or a resource descriptor that is missing
2442 an END_TAG descriptor. Reported by Dan Carpenter
2443 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
2445 Table unload and ACPICA termination: Delete all attached data objects
2446 during namespace node deletion. This fix updates namespace node deletion
2447 to delete the entire list of attached objects (attached via
2448 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
2449 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
2451 ACPICA termination: Added support to delete all objects attached to the
2452 root namespace node. This fix deletes any and all objects that have been
2453 attached to the root node via AcpiAttachData. Previously, none of these
2454 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
2456 Debug output: Do not emit the function nesting level for the in-kernel
2457 build. The nesting level is really only useful during a single-thread
2458 execution. Therefore, only enable this output for the AcpiExec utility.
2459 Also, only emit the thread ID when executing under AcpiExec (Context
2460 switches are still always detected and a message is emitted). ACPICA BZ
2463 Example Code and Data Size: These are the sizes for the OS-independent
2464 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2465 debug version of the code includes the debug output trace mechanism and
2466 has a much larger code and data size.
2469 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2470 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2472 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2473 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2476 2) iASL Compiler/Disassembler and Tools:
2478 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
2479 correct portable POSIX header for terminal control functions.
2481 Disassembler: Fixed control method invocation issues related to the use
2482 of the CondRefOf() operator. The problem is seen in the disassembly where
2483 control method invocations may not be disassembled properly if the
2484 control method name has been used previously as an argument to CondRefOf.
2485 The solution is to not attempt to emit an external declaration for the
2486 CondRefOf target (it is not necessary in the first place). This prevents
2487 disassembler object type confusion. ACPICA BZ 988.
2489 Unix Makefiles: Added an option to disable compiler optimizations and the
2490 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
2491 with optimizations (reportedly, gcc 4.4 for example). This change adds a
2492 command line option for make (NOOPT) that disables all compiler
2493 optimizations and the _FORTIFY_SOURCE compiler flag. The default
2494 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
2495 1034. Lv Zheng, Bob Moore.
2497 Tests/ASLTS: Added options to specify individual test cases and modes.
2498 This allows testers running aslts.sh to optionally specify individual
2499 test modes and test cases. Also added an option to disable the forced
2500 generation of the ACPICA tools from source if desired. Lv Zheng.
2502 ----------------------------------------
2503 27 September 2013. Summary of changes for version 20130927:
2505 This release is available at https://acpica.org/downloads
2508 1) ACPICA kernel-resident subsystem:
2510 Fixed a problem with store operations to reference objects. This change
2511 fixes a problem where a Store operation to an ArgX object that contained
2513 reference to a field object did not complete the automatic dereference
2515 then write to the actual field object. Instead, the object type of the
2516 field object was inadvertently changed to match the type of the source
2517 operand. The new behavior will actually write to the field object (buffer
2518 field or field unit), thus matching the correct ACPI-defined behavior.
2520 Implemented support to allow the host to redefine individual OSL
2521 prototypes. This change enables the host to redefine OSL prototypes found
2522 in the acpiosxf.h file. This allows the host to implement OSL interfaces
2523 with a macro or inlined function. Further, it allows the host to add any
2524 additional required modifiers such as __iomem, __init, __exit, etc., as
2525 necessary on a per-interface basis. Enables maximum flexibility for the
2526 OSL interfaces. Lv Zheng.
2528 Hardcoded the access width for the FADT-defined reset register. The ACPI
2529 specification requires the reset register width to be 8 bits. ACPICA now
2530 hardcodes the width to 8 and ignores the FADT width value. This provides
2531 compatibility with other ACPI implementations that have allowed BIOS code
2532 with bad register width values to go unnoticed. Matthew Garett, Bob
2536 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
2538 in the OSL header (acpiosxf). The change modifies the position of this
2539 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
2540 build issues if the OSL defines the implementation of the interface to be
2541 an inline stub function. Lv Zheng.
2543 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
2544 initialization interfaces. This change adds a new macro for the main init
2545 and terminate external interfaces in order to support hosts that require
2546 additional or different processing for these functions. Changed from
2547 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
2550 Cleaned up the memory allocation macros for configurability. In the
2552 case, the ACPI_ALLOCATE and related macros now resolve directly to their
2553 respective AcpiOs* OSL interfaces. Two options:
2554 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
2555 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2556 2) For AcpiExec (and for debugging), the macros can optionally be
2558 to the local ACPICA interfaces that track each allocation (local tracking
2559 is used to immediately detect memory leaks).
2562 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
2563 to predefine this macro to either TRUE or FALSE during the system build.
2565 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
2567 Example Code and Data Size: These are the sizes for the OS-independent
2568 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2569 debug version of the code includes the debug output trace mechanism and
2570 has a much larger code and data size.
2573 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2574 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2576 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2577 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2580 2) iASL Compiler/Disassembler and Tools:
2582 iASL: Implemented wildcard support for the -e option. This simplifies use
2583 when there are many SSDTs that must be included to resolve external
2585 declarations. ACPICA BZ 1041. Example:
2586 iasl -e ssdt*.dat -d dsdt.dat
2588 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
2589 adds a portable module that implements full history and limited line
2590 editing for Unix and Linux systems. It does not use readline() due to
2591 portability issues. Instead it uses the POSIX termio interface to put the
2592 terminal in raw input mode so that the various special keys can be
2594 (such as up/down-arrow for history support and left/right-arrow for line
2595 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
2597 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
2598 one or more spaces. This provides compatible with early or different
2599 versions of the AcpiDump utility. ACPICA BZ 1044.
2601 AcpiDump: Do not ignore tables that contain only an ACPI table header.
2602 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
2603 no other data. This change adds support to dump these tables. Any tables
2604 shorter than the length of an ACPI table header remain in error (an error
2605 message is emitted). Reported by Yi Li.
2607 Debugger: Echo actual command along with the "unknown command" message.
2609 ----------------------------------------
2610 23 August 2013. Summary of changes for version 20130823:
2612 1) ACPICA kernel-resident subsystem:
2614 Implemented support for host-installed System Control Interrupt (SCI)
2615 handlers. Certain ACPI functionality requires the host to handle raw
2616 SCIs. For example, the "SCI Doorbell" that is defined for memory power
2617 state support requires the host device driver to handle SCIs to examine
2618 if the doorbell has been activated. Multiple SCI handlers can be
2619 installed to allow for future expansion. New external interfaces are
2620 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
2621 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
2623 Operation region support: Never locally free the handler "context"
2624 pointer. This change removes some dangerous code that attempts to free
2625 the handler context pointer in some (rare) circumstances. The owner of
2626 the handler owns this pointer and the ACPICA code should never touch it.
2627 Although not seen to be an issue in any kernel, it did show up as a
2628 problem (fault) under AcpiExec. Also, set the internal storage field for
2629 the context pointer to zero when the region is deactivated, simply for
2630 sanity. David Box. ACPICA BZ 1039.
2632 AcpiRead: On error, do not modify the return value target location. If an
2633 error happens in the middle of a split 32/32 64-bit I/O operation, do not
2634 modify the target of the return value pointer. Makes the code consistent
2635 with the rest of ACPICA. Bjorn Helgaas.
2637 Example Code and Data Size: These are the sizes for the OS-independent
2638 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2639 debug version of the code includes the debug output trace mechanism and
2640 has a much larger code and data size.
2643 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2644 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2646 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2647 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
2650 2) iASL Compiler/Disassembler and Tools:
2652 AcpiDump: Implemented several new features and fixed some problems:
2653 1) Added support to dump the RSDP, RSDT, and XSDT tables.
2654 2) Added support for multiple table instances (SSDT, UEFI).
2655 3) Added option to dump "customized" (overridden) tables (-c).
2656 4) Fixed a problem where some table filenames were improperly
2658 5) Improved some error messages, removed some unnecessary messages.
2660 iASL: Implemented additional support for disassembly of ACPI tables that
2661 contain invocations of external control methods. The -fe<file> option
2662 allows the import of a file that specifies the external methods along
2663 with the required number of arguments for each -- allowing for the
2664 correct disassembly of the table. This is a workaround for a limitation
2665 of AML code where the disassembler often cannot determine the number of
2666 arguments required for an external control method and generates incorrect
2667 ASL code. See the iASL reference for details. ACPICA BZ 1030.
2669 Debugger: Implemented a new command (paths) that displays the full
2670 pathnames (namepaths) and object types of all objects in the namespace.
2671 This is an alternative to the namespace command.
2673 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
2674 mechanism and any installed handlers.
2676 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
2677 This can occur if there are too many parent prefixes in a namepath (for
2678 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
2680 Application OSLs: Set the return value for the PCI read functions. These
2681 functions simply return AE_OK, but should set the return value to zero
2682 also. This change implements this. ACPICA BZ 1038.
2684 Debugger: Prevent possible command line buffer overflow. Increase the
2685 size of a couple of the debugger line buffers, and ensure that overflow
2686 cannot happen. ACPICA BZ 1037.
2688 iASL: Changed to abort immediately on serious errors during the parsing
2689 phase. Due to the nature of ASL, there is no point in attempting to
2690 compile these types of errors, and they typically end up causing a
2691 cascade of hundreds of errors which obscure the original problem.
2693 ----------------------------------------
2694 25 July 2013. Summary of changes for version 20130725:
2696 1) ACPICA kernel-resident subsystem:
2698 Fixed a problem with the DerefOf operator where references to FieldUnits
2699 and BufferFields incorrectly returned the parent object, not the actual
2700 value of the object. After this change, a dereference of a FieldUnit
2701 reference results in a read operation on the field to get the value, and
2702 likewise, the appropriate BufferField value is extracted from the target
2705 Fixed a problem where the _WAK method could cause a fault under these
2706 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
2707 method returned no value. The problem is rarely seen because most kernels
2708 run ACPICA in slack mode.
2710 For the DerefOf operator, a fatal error now results if an attempt is made
2711 to dereference a reference (created by the Index operator) to a NULL
2712 package element. Provides compatibility with other ACPI implementations,
2713 and this behavior will be added to a future version of the ACPI
2716 The ACPI Power Management Timer (defined in the FADT) is now optional.
2717 This provides compatibility with other ACPI implementations and will
2718 appear in the next version of the ACPI specification. If there is no PM
2719 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
2720 zero in the FADT indicates no PM timer.
2722 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
2723 allows the host to globally enable/disable all vendor strings, all
2724 feature strings, or both. Intended to be primarily used for debugging
2725 purposes only. Lv Zheng.
2727 Expose the collected _OSI data to the host via a global variable. This
2728 data tracks the highest level vendor ID that has been invoked by the BIOS
2729 so that the host (and potentially ACPICA itself) can change behaviors
2730 based upon the age of the BIOS.
2732 Example Code and Data Size: These are the sizes for the OS-independent
2733 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2734 debug version of the code includes the debug output trace mechanism and
2735 has a much larger code and data size.
2738 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2739 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2741 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2742 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2745 2) iASL Compiler/Disassembler and Tools:
2747 iASL: Created the following enhancements for the -so option (create
2749 1)Add offsets for the last nameseg in each namepath for every supported
2751 2)Add support for Processor, Device, Thermal Zone, and Scope objects
2752 3)Add the actual AML opcode for the parent object of every supported
2754 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
2756 Disassembler: Emit all unresolved external symbols in a single block.
2757 These are external references to control methods that could not be
2758 resolved, and thus, the disassembler had to make a guess at the number of
2761 iASL: The argument to the -T option (create table template) is now
2762 optional. If not specified, the default table is a DSDT, typically the
2765 ----------------------------------------
2766 26 June 2013. Summary of changes for version 20130626:
2768 1) ACPICA kernel-resident subsystem:
2770 Fixed an issue with runtime repair of the _CST object. Null or invalid
2771 elements were not always removed properly. Lv Zheng.
2773 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
2774 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
2775 the maximum number of GPEs is 1016. Use of multiple GPE block devices
2776 makes the system-wide number of GPEs essentially unlimited.
2778 Example Code and Data Size: These are the sizes for the OS-independent
2779 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2780 debug version of the code includes the debug output trace mechanism and
2781 has a much larger code and data size.
2784 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2785 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2787 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2788 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2791 2) iASL Compiler/Disassembler and Tools:
2793 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
2794 hosts. Now supports Linux, FreeBSD, and Windows.
2796 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
2797 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
2799 iASL/Preprocessor: Implemented full support for nested
2800 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
2802 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
2803 max. The original purpose of this constraint was to limit the amount of
2804 debug output. However, the string function in question (UtPrintString) is
2805 now used for the disassembler also, where 256 bytes is insufficient.
2806 Reported by RehabMan@GitHub.
2808 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
2809 tables. ACPICA BZ 999. Lv Zheng.
2811 iASL: Fixed a couple of error exit issues that could result in a "Could
2812 not delete <file>" message during ASL compilation.
2814 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
2815 the actual signatures for these tables are "FACP" and "APIC",
2818 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
2819 tables are allowed to have multiple instances.
2821 ----------------------------------------
2822 17 May 2013. Summary of changes for version 20130517:
2824 1) ACPICA kernel-resident subsystem:
2826 Fixed a regression introduced in version 20130328 for _INI methods. This
2827 change fixes a problem introduced in 20130328 where _INI methods are no
2828 longer executed properly because of a memory block that was not
2829 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
2830 <tomasz.nowicki@linaro.org>.
2832 Fixed a possible problem with the new extended sleep registers in the
2834 5.0 FADT. Do not use these registers (even if populated) unless the HW-
2835 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
2838 Implemented return value repair code for _CST predefined objects: Sort
2840 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
2842 Implemented a debug-only option to disable loading of SSDTs from the
2843 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
2844 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
2845 acglobal.h - ACPICA BZ 1005. Lv Zheng.
2847 Fixed some issues in the ACPICA initialization and termination code:
2848 Tomasz Nowicki <tomasz.nowicki@linaro.org>
2849 1) Clear events initialized flag upon event component termination. ACPICA
2851 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
2852 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
2853 4) Clear debug buffer global on termination to prevent possible multiple
2854 delete. ACPICA BZ 1010.
2856 Standardized all switch() blocks across the entire source base. After
2858 years, different formatting for switch() had crept in. This change makes
2859 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
2861 Split some files to enhance ACPICA modularity and configurability:
2862 1) Split buffer dump routines into utilities/utbuffer.c
2863 2) Split internal error message routines into utilities/uterror.c
2864 3) Split table print utilities into tables/tbprint.c
2865 4) Split iASL command-line option processing into asloptions.c
2867 Makefile enhancements:
2868 1) Support for all new files above.
2869 2) Abort make on errors from any subcomponent. Chao Guan.
2870 3) Add build support for Apple Mac OS X. Liang Qi.
2872 Example Code and Data Size: These are the sizes for the OS-independent
2873 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2874 debug version of the code includes the debug output trace mechanism and
2875 has a much larger code and data size.
2878 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2879 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2881 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2882 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2885 2) iASL Compiler/Disassembler and Tools:
2887 New utility: Implemented an easily portable version of the acpidump
2888 utility to extract ACPI tables from the system (or a file) in an ASCII
2890 dump format. The top-level code implements the various command line
2891 options, file I/O, and table dump routines. To port to a new host, only
2892 three functions need to be implemented to get tables -- since this
2893 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
2894 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
2895 1) The Windows version obtains the ACPI tables from the Registry.
2896 2) The Linux version is under development.
2897 3) Other hosts - If an OS-dependent module is submitted, it will be
2898 distributed with ACPICA.
2900 iASL: Fixed a regression for -D preprocessor option (define symbol). A
2901 restructuring/change to the initialization sequence caused this option to
2902 no longer work properly.
2904 iASL: Implemented a mechanism to disable specific warnings and remarks.
2905 Adds a new command line option, "-vw <messageid> as well as "#pragma
2906 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
2908 iASL: Fix for too-strict package object validation. The package object
2909 validation for return values from the predefined names is a bit too
2910 strict, it does not allow names references within the package (which will
2911 be resolved at runtime.) These types of references cannot be validated at
2912 compile time. This change ignores named references within package objects
2913 for names that return or define static packages.
2915 Debugger: Fixed the 80-character command line limitation for the History
2916 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
2918 iASL: Added control method and package support for the -so option
2919 (generates AML offset table for BIOS support.)
2921 iASL: issue a remark if a non-serialized method creates named objects. If
2922 a thread blocks within the method for any reason, and another thread
2923 enters the method, the method will fail because an attempt will be made
2925 create the same (named) object twice. In this case, issue a remark that
2926 the method should be marked serialized. NOTE: may become a warning later.
2929 ----------------------------------------
2930 18 April 2013. Summary of changes for version 20130418:
2932 1) ACPICA kernel-resident subsystem:
2934 Fixed a possible buffer overrun during some rare but specific field unit
2935 read operations. This overrun can only happen if the DSDT version is 1 --
2936 meaning that all AML integers are 32 bits -- and the field length is
2937 between 33 and 55 bits long. During the read, an internal buffer object
2939 created for the field unit because the field is larger than an integer
2941 bits). However, in this case, the buffer will be incorrectly written
2942 beyond the end because the buffer length is less than the internal
2944 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
2945 long, but a full 8 bytes will be written.
2947 Updated the Embedded Controller "orphan" _REG method support. This refers
2948 to _REG methods under the EC device that have no corresponding operation
2949 region. This is allowed by the ACPI specification. This update removes a
2950 dependency on the existence an ECDT table. It will execute an orphan _REG
2951 method as long as the operation region handler for the EC is installed at
2952 the EC device node and not the namespace root. Rui Zhang (original
2953 update), Bob Moore (update/integrate).
2955 Implemented run-time argument typechecking for all predefined ACPI names
2956 (_STA, _BIF, etc.) This change performs object typechecking on all
2957 incoming arguments for all predefined names executed via
2958 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
2959 passing correct object types as well as the correct number of arguments
2960 (therefore identifying any issues immediately). Also, the ASL/namespace
2961 definition of the predefined name is checked against the ACPI
2962 specification for the proper argument count. Adds one new file,
2965 Changed an exception code for the ASL UnLoad() operator. Changed the
2966 exception code for the case where the input DdbHandle is invalid, from
2967 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
2969 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
2970 global makefile. The use of this flag causes compiler errors on earlier
2971 versions of GCC, so it has been removed for compatibility.
2973 Miscellaneous cleanup:
2974 1) Removed some unused/obsolete macros
2975 2) Fixed a possible memory leak in the _OSI support
2976 3) Removed an unused variable in the predefined name support
2977 4) Windows OSL: remove obsolete reference to a memory list field
2979 Example Code and Data Size: These are the sizes for the OS-independent
2980 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2981 debug version of the code includes the debug output trace mechanism and
2982 has a much larger code and data size.
2985 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2986 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2988 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2989 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2992 2) iASL Compiler/Disassembler and Tools:
2994 AcpiExec: Added installation of a handler for the SystemCMOS address
2995 space. This prevents control method abort if a method accesses this
2998 AcpiExec: Added support for multiple EC devices, and now install EC
2999 operation region handler(s) at the actual EC device instead of the
3000 namespace root. This reflects the typical behavior of host operating
3003 AcpiExec: Updated to ensure that all operation region handlers are
3004 installed before the _REG methods are executed. This prevents a _REG
3005 method from aborting if it accesses an address space has no handler.
3006 AcpiExec installs a handler for every possible address space.
3008 Debugger: Enhanced the "handlers" command to display non-root handlers.
3009 This change enhances the handlers command to display handlers associated
3010 with individual devices throughout the namespace, in addition to the
3011 currently supported display of handlers associated with the root
3015 ASL Test Suite: Several test suite errors have been identified and
3016 resolved, reducing the total error count during execution. Chao Guan.
3018 ----------------------------------------
3019 28 March 2013. Summary of changes for version 20130328:
3021 1) ACPICA kernel-resident subsystem:
3023 Fixed several possible race conditions with the internal object reference
3024 counting mechanism. Some of the external ACPICA interfaces update object
3025 reference counts without holding the interpreter or namespace lock. This
3026 change adds a spinlock to protect reference count updates on the internal
3027 ACPICA objects. Reported by and with assistance from Andriy Gapon
3030 FADT support: Removed an extraneous warning for very large GPE register
3031 sets. This change removes a size mismatch warning if the legacy length
3032 field for a GPE register set is larger than the 64-bit GAS structure can
3033 accommodate. GPE register sets can be larger than the 255-bit width
3034 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3036 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3037 return from this interface. Handles a possible timeout case if
3038 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3039 "forever". Jung-uk Kim.
3041 Predefined name support: Add allowed/required argument type information
3043 the master predefined info table. This change adds the infrastructure to
3044 enable typechecking on incoming arguments for all predefined
3045 methods/objects. It does not actually contain the code that will fully
3046 utilize this information, this is still under development. Also condenses
3047 some duplicate code for the predefined names into a new module,
3048 utilities/utpredef.c
3050 Example Code and Data Size: These are the sizes for the OS-independent
3051 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3052 debug version of the code includes the debug output trace mechanism and
3053 has a much larger code and data size.
3056 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3057 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3059 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3060 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3063 2) iASL Compiler/Disassembler and Tools:
3065 iASL: Implemented a new option to simplify the development of ACPI-
3067 BIOS code. Adds support for a new "offset table" output file. The -so
3068 option will create a C table containing the AML table offsets of various
3069 named objects in the namespace so that BIOS code can modify them easily
3071 boot time. This can simplify BIOS runtime code by eliminating expensive
3072 searches for "magic values", enhancing boot times and adding greater
3073 reliability. With assistance from Lee Hamel.
3075 iASL: Allow additional predefined names to return zero-length packages.
3076 Now, all predefined names that are defined by the ACPI specification to
3077 return a "variable-length package of packages" are allowed to return a
3078 zero length top-level package. This allows the BIOS to tell the host that
3079 the requested feature is not supported, and supports existing BIOS/ASL
3082 iASL: Changed the "result not used" warning to an error. This is the case
3083 where an ASL operator is effectively a NOOP because the result of the
3084 operation is not stored anywhere. For example:
3086 There is no target (missing 3rd argument), nor is the function return
3087 value used. This is potentially a very serious problem -- since the code
3088 was probably intended to do something, but for whatever reason, the value
3089 was not stored. Therefore, this issue has been upgraded from a warning to
3092 AcpiHelp: Added allowable/required argument types to the predefined names
3093 info display. This feature utilizes the recent update to the predefined
3094 names table (above).
3096 ----------------------------------------
3097 14 February 2013. Summary of changes for version 20130214:
3099 1) ACPICA Kernel-resident Subsystem:
3101 Fixed a possible regression on some hosts: Reinstated the safe return
3102 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3103 evaluated only once. Although these macros are not needed for the ACPICA
3104 code itself, they are often used by ACPI-related host device drivers
3106 the safe feature may be necessary.
3108 Fixed several issues related to the ACPI 5.0 reduced hardware support
3109 (SOC): Now ensure that if the platform declares itself as hardware-
3111 via the FADT, the following functions become NOOPs (and always return
3112 AE_OK) because ACPI is always enabled by definition on these machines:
3118 Dynamic Object Repair: Implemented additional runtime repairs for
3119 predefined name return values. Both of these repairs can simplify code in
3120 the related device drivers that invoke these methods:
3121 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3122 string to a Unicode buffer.
3123 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3125 lone end tag descriptor in the following cases: A Return(0) was executed,
3126 a null buffer was returned, or no object at all was returned (non-slack
3127 mode only). Adds a new file, nsconvert.c
3128 ACPICA BZ 998. Bob Moore, Lv Zheng.
3130 Resource Manager: Added additional code to prevent possible infinite
3132 while traversing corrupted or ill-formed resource template buffers. Check
3133 for zero-length resource descriptors in all code that loops through
3134 resource templates (the length field is used to index through the
3135 template). This change also hardens the external AcpiWalkResources and
3136 AcpiWalkResourceBuffer interfaces.
3138 Local Cache Manager: Enhanced the main data structure to eliminate an
3139 unnecessary mechanism to access the next object in the list. Actually
3140 provides a small performance enhancement for hosts that use the local
3141 ACPICA cache manager. Jung-uk Kim.
3143 Example Code and Data Size: These are the sizes for the OS-independent
3144 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3145 debug version of the code includes the debug output trace mechanism and
3146 has a much larger code and data size.
3149 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3150 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3152 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3153 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3156 2) iASL Compiler/Disassembler and Tools:
3158 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3159 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3160 that were made to the ACPI 5.0 specification.
3162 iASL/Disassembler: Added full support for the following new ACPI tables:
3163 1) The MTMR table (MID Timer Table)
3164 2) The VRTC table (Virtual Real Time Clock Table).
3165 Includes header file, disassembler, table compiler, and template support
3168 iASL: Implemented compile-time validation of package objects returned by
3169 predefined names. This new feature validates static package objects
3170 returned by the various predefined names defined to return packages. Both
3171 object types and package lengths are validated, for both parent packages
3172 and sub-packages, if any. The code is similar in structure and behavior
3174 the runtime repair mechanism within the AML interpreter and uses the
3175 existing predefined name information table. Adds a new file, aslprepkg.c.
3178 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3179 This feature detects a binary file with a valid ACPI table header and
3180 invokes the disassembler automatically. Eliminates the need to
3181 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3183 iASL/Disassembler: Added several warnings for the case where there are
3184 unresolved control methods during the disassembly. This can potentially
3185 cause errors when the output file is compiled, because the disassembler
3186 assumes zero method arguments in these cases (it cannot determine the
3187 actual number of arguments without resolution/definition of the method).
3189 Debugger: Added support to display all resources with a single command.
3190 Invocation of the resources command with no arguments will now display
3192 resources within the current namespace.
3194 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3197 ----------------------------------------
3198 17 January 2013. Summary of changes for version 20130117:
3200 1) ACPICA Kernel-resident Subsystem:
3202 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3203 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3204 objects to return a package containing one integer, most BIOS code
3206 two integers and the previous code reflects that. However, we also need
3208 support BIOS code that actually implements to the ACPI spec, and this
3209 change reflects this.
3211 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3212 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3213 C compilers that require this support.
3214 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3215 ACPI_DEBUG is already used by many of the various hosts.
3217 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3218 copyright to all module headers and signons, including the standard Linux
3219 header. This affects virtually every file in the ACPICA core subsystem,
3220 iASL compiler, all ACPICA utilities, and the test suites.
3222 Example Code and Data Size: These are the sizes for the OS-independent
3223 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3224 debug version of the code includes the debug output trace mechanism and
3225 has a much larger code and data size.
3228 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3229 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3231 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3232 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3235 2) iASL Compiler/Disassembler and Tools:
3237 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3238 prevent a possible fault on some hosts. Some C libraries modify the arg
3239 pointer parameter to vfprintf making it difficult to call it twice in the
3240 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
3241 does not affect the Windows OSL since the Win C library does not modify
3242 the arg pointer. Chao Guan, Bob Moore.
3244 iASL: Fixed a possible infinite loop when the maximum error count is
3245 reached. If an output file other than the .AML file is specified (such as
3246 a listing file), and the maximum number of errors is reached, do not
3247 attempt to flush data to the output file(s) as the compiler is aborting.
3248 This can cause an infinite loop as the max error count code essentially
3249 keeps calling itself.
3251 iASL/Disassembler: Added an option (-in) to ignore NOOP
3253 Implemented for both the compiler and the disassembler. Often, the NOOP
3254 opcode is used as padding for packages that are changed dynamically by
3256 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
3257 errors. This option causes the disassembler to ignore all NOOP opcodes
3258 (0xA3), and it also causes the compiler to ignore all ASL source code
3262 Debugger: Enhanced the Sleep command to execute all sleep states. This
3263 change allows Sleep to be invoked with no arguments and causes the
3264 debugger to execute all of the sleep states, 0-5, automatically.
3266 ----------------------------------------
3267 20 December 2012. Summary of changes for version 20121220:
3269 1) ACPICA Kernel-resident Subsystem:
3271 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
3272 alternate entry point for AcpiWalkResources and improves the usability of
3273 the resource manager by accepting as input a buffer containing the output
3274 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
3275 input buffer is not deleted by this interface so that it can be used by
3276 the host later. See the ACPICA reference for details.
3278 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
3279 (DSDT version < 2). The constant will be truncated and this warning
3280 reflects that behavior.
3282 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
3283 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
3284 both get and set the new wake bit in these descriptors, separately from
3285 the existing share bit. Reported by Aaron Lu.
3287 Interpreter: Fix Store() when an implicit conversion is not possible. For
3288 example, in the cases such as a store of a string to an existing package
3289 object, implement the store as a CopyObject(). This is a small departure
3290 from the ACPI specification which states that the control method should
3292 aborted in this case. However, the ASLTS suite depends on this behavior.
3294 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
3295 macros: check if debug output is currently enabled as soon as possible to
3296 minimize performance impact if debug is in fact not enabled.
3298 Source code restructuring: Cleanup to improve modularity. The following
3299 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
3300 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
3301 Associated makefiles and project files have been updated.
3303 Changed an exception code for LoadTable operator. For the case where one
3304 of the input strings is too long, change the returned exception code from
3305 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
3307 Fixed a possible memory leak in dispatcher error path. On error, delete
3308 the mutex object created during method mutex creation. Reported by
3309 tim.gardner@canonical.com.
3311 Example Code and Data Size: These are the sizes for the OS-independent
3312 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3313 debug version of the code includes the debug output trace mechanism and
3314 has a much larger code and data size.
3317 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3318 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3320 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3321 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3324 2) iASL Compiler/Disassembler and Tools:
3326 iASL: Disallow a method call as argument to the ObjectType ASL operator.
3327 This change tracks an errata to the ACPI 5.0 document. The AML grammar
3328 will not allow the interpreter to differentiate between a method and a
3329 method invocation when these are used as an argument to the ObjectType
3330 operator. The ACPI specification change is to disallow a method
3332 (UserTerm) for the ObjectType operator.
3334 Finish support for the TPM2 and CSRT tables in the headers, table
3335 compiler, and disassembler.
3337 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
3338 always expires immediately if the semaphore is not available. The
3340 code was using a relative-time timeout, but sem_timedwait requires the
3342 of an absolute time.
3344 iASL: Added a remark if the Timer() operator is used within a 32-bit
3345 table. This operator returns a 64-bit time value that will be truncated
3346 within a 32-bit table.
3348 iASL Source code restructuring: Cleanup to improve modularity. The
3349 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
3350 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
3354 ----------------------------------------
3355 14 November 2012. Summary of changes for version 20121114:
3357 1) ACPICA Kernel-resident Subsystem:
3359 Implemented a performance enhancement for ACPI/AML Package objects. This
3360 change greatly increases the performance of Package objects within the
3361 interpreter. It changes the processing of reference counts for packages
3363 optimizing for the most common case where the package sub-objects are
3364 either Integers, Strings, or Buffers. Increases the overall performance
3366 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
3368 Chao Guan. ACPICA BZ 943.
3370 Implemented and deployed common macros to extract flag bits from resource
3371 descriptors. Improves readability and maintainability of the code. Fixes
3373 problem with the UART serial bus descriptor for the number of data bits
3374 flags (was incorrectly 2 bits, should be 3).
3376 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
3377 of the macros and changed the SETx macros to the style of (destination,
3378 source). Also added ACPI_CASTx companion macros. Lv Zheng.
3380 Example Code and Data Size: These are the sizes for the OS-independent
3381 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3382 debug version of the code includes the debug output trace mechanism and
3383 has a much larger code and data size.
3386 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3387 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3389 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3390 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3393 2) iASL Compiler/Disassembler and Tools:
3395 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
3396 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
3397 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
3399 Disassembler: Fixed a problem with external declaration generation. Fixes
3400 a problem where an incorrect pathname could be generated for an external
3401 declaration if the original reference to the object includes leading
3402 carats (^). ACPICA BZ 984.
3404 Debugger: Completed a major update for the Disassemble<method> command.
3405 This command was out-of-date and did not properly disassemble control
3406 methods that had any reasonable complexity. This fix brings the command
3408 to the same level as the rest of the disassembler. Adds one new file,
3409 dmdeferred.c, which is existing code that is now common with the main
3410 disassembler and the debugger disassemble command. ACPICA MZ 978.
3412 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
3413 Newer versions of Bison emit this prototype, so moved the prototype out
3415 the iASL header to where it is actually used in order to avoid a
3419 iASL/Tools: Standardized use of the stream I/O functions:
3420 1) Ensure check for I/O error after every fopen/fread/fwrite
3421 2) Ensure proper order of size/count arguments for fread/fwrite
3422 3) Use test of (Actual != Requested) after all fwrite, and most fread
3423 4) Standardize I/O error messages
3424 Improves reliability and maintainability of the code. Bob Moore, Lv
3428 Disassembler: Prevent duplicate External() statements. During generation
3429 of external statements, detect similar pathnames that are actually
3430 duplicates such as these:
3433 Remove all leading '\' characters from pathnames during the external
3434 statement generation so that duplicates will be detected and tossed.
3437 Tools: Replace low-level I/O with stream I/O functions. Replace
3438 open/read/write/close with the stream I/O equivalents
3439 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
3442 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
3443 name header so that AcpiXtract recognizes the output file/table.
3445 iASL: Remove obsolete -2 option flag. Originally intended to force the
3446 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
3447 and the entire concept is now obsolete.
3449 ----------------------------------------
3450 18 October 2012. Summary of changes for version 20121018:
3453 1) ACPICA Kernel-resident Subsystem:
3455 Updated support for the ACPI 5.0 MPST table. Fixes some problems
3456 introduced by late changes to the table as it was added to the ACPI 5.0
3457 specification. Includes header, disassembler, and data table compiler
3458 support as well as a new version of the MPST template.
3460 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
3461 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
3462 methods: _HID, _CID, and _UID.
3464 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
3465 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
3466 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
3467 names for their various drivers. Affects the AcpiGetObjectInfo external
3468 interface, and other internal interfaces as well.
3470 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
3471 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
3472 on machines that support non-aligned transfers. Optimizes for this case
3473 rather than using a strncpy. With assistance from Zheng Lv.
3475 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
3476 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
3478 Added a new debug print message for AML mutex objects that are force-
3479 released. At control method termination, any currently acquired mutex
3480 objects are force-released. Adds a new debug-only message for each one
3483 Audited/updated all ACPICA return macros and the function debug depth
3484 counter: 1) Ensure that all functions that use the various TRACE macros
3485 also use the appropriate ACPICA return macros. 2) Ensure that all normal
3486 return statements surround the return expression (value) with parens to
3487 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
3488 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
3490 Global source code changes/maintenance: All extra lines at the start and
3491 end of each source file have been removed for consistency. Also, within
3492 comments, all new sentences start with a single space instead of a double
3493 space, again for consistency across the code base.
3495 Example Code and Data Size: These are the sizes for the OS-independent
3496 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3497 debug version of the code includes the debug output trace mechanism and
3498 has a much larger code and data size.
3501 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3502 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3504 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3505 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3508 2) iASL Compiler/Disassembler and Tools:
3510 AcpiExec: Improved the algorithm used for memory leak/corruption
3511 detection. Added some intelligence to the code that maintains the global
3512 list of allocated memory. The list is now ordered by allocated memory
3513 address, significantly improving performance. When running AcpiExec on
3514 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
3515 on the platform and/or the environment. Note, this performance
3516 enhancement affects the AcpiExec utility only, not the kernel-resident
3519 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
3520 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
3521 incorrect table offset reported for invalid opcodes. Report the original
3522 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
3524 Disassembler: Enhanced the -vt option to emit the binary table data in
3525 hex format to assist with debugging.
3527 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
3528 size of file structure. Colin Ian King.
3530 ----------------------------------------
3531 13 September 2012. Summary of changes for version 20120913:
3534 1) ACPICA Kernel-resident Subsystem:
3536 ACPI 5.0: Added two new notify types for the Hardware Error Notification
3537 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
3541 Table Manager: Merged/removed duplicate code in the root table resize
3542 functions. One function is external, the other is internal. Lv Zheng,
3546 Makefiles: Completely removed the obsolete "Linux" makefiles under
3547 acpica/generate/linux. These makefiles are obsolete and have been
3550 the generic unix makefiles under acpica/generate/unix.
3552 Makefiles: Ensure that binary files always copied properly. Minor rule
3554 to ensure that the final binary output files are always copied up to the
3555 appropriate binary directory (bin32 or bin64.)
3557 Example Code and Data Size: These are the sizes for the OS-independent
3558 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3560 version of the code includes the debug output trace mechanism and has a
3562 larger code and data size.
3565 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3566 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3568 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3569 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3572 2) iASL Compiler/Disassembler and Tools:
3574 Disassembler: Fixed a possible fault during the disassembly of resource
3575 descriptors when a second parse is required because of the invocation of
3576 external control methods within the table. With assistance from
3577 adq@lidskialf.net. ACPICA BZ 976.
3579 iASL: Fixed a namepath optimization problem. An error can occur if the
3581 node that contains the namepath to be optimized does not have a parent
3583 that is a named object. This change fixes the problem.
3585 iASL: Fixed a regression where the AML file is not deleted on errors. The
3587 output file should be deleted if there are any errors during the
3590 only exception is if the -f (force output) option is used. ACPICA BZ 974.
3592 iASL: Added a feature to automatically increase internal line buffer
3594 Via realloc(), automatically increase the internal line buffer sizes as
3595 necessary to support very long source code lines. The current version of
3597 preprocessor requires a buffer long enough to contain full source code
3599 This change increases the line buffer(s) if the input lines go beyond the
3600 current buffer size. This eliminates errors that occurred when a source
3602 line was longer than the buffer.
3604 iASL: Fixed a problem with constant folding in method declarations. The
3605 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
3607 Type3 opcode was used.
3609 Debugger: Improved command help support. For incorrect argument count,
3611 full help for the command. For help command itself, allow an argument to
3614 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
3615 errors during execution of the suite. Guan Chao.
3617 ----------------------------------------
3618 16 August 2012. Summary of changes for version 20120816:
3621 1) ACPICA Kernel-resident Subsystem:
3623 Removed all use of the deprecated _GTS and _BFS predefined methods. The
3625 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
3626 deprecated and will probably be removed from the ACPI specification.
3628 does not invoke them, and reportedly never will. The final nail in the
3630 is that the ACPI specification states that these methods must be run with
3631 interrupts off, which is not going to happen in a kernel interpreter.
3633 Linux has removed all use of the methods also. It was discovered that
3634 invoking these functions caused failures on some machines, probably
3636 they were never tested since Windows does not call them. Affects two
3638 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
3641 Implemented support for complex bit-packed buffers returned from the _PLD
3642 (Physical Location of Device) predefined method. Adds a new external
3643 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
3645 structure. Note: C Bitfields cannot be used for this type of predefined
3646 structure since the memory layout of individual bitfields is not defined
3648 the C language. In addition, there are endian concerns where a compiler
3650 change the bitfield ordering based on the machine type. The new ACPICA
3651 interface eliminates these issues, and should be called after _PLD is
3652 executed. ACPICA BZ 954.
3654 Implemented a change to allow a scope change to root (via "Scope (\)")
3656 execution of module-level ASL code (code that is executed at table load
3659 Added the Windows8/Server2012 string for the _OSI method. This change
3662 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
3665 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
3667 and CSRT (Core System Resource Table).
3669 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
3670 names. This simplifies access to the buffers returned by these predefined
3671 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
3673 GPE support: Removed an extraneous parameter from the various low-level
3674 internal GPE functions. Tang Feng.
3676 Removed the linux makefiles from the unix packages. The generate/linux
3677 makefiles are obsolete and have been removed from the unix tarball
3679 packages. The replacement makefiles are under generate/unix, and there is
3681 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
3683 Updates for Unix makefiles:
3684 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
3685 2) Update linker flags (move to end of command line) for AcpiExec
3689 Split ACPICA initialization functions to new file, utxfinit.c. Split from
3690 utxface.c to improve modularity and reduce file size.
3692 Example Code and Data Size: These are the sizes for the OS-independent
3693 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3694 debug version of the code includes the debug output trace mechanism and
3696 much larger code and data size.
3699 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3700 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3702 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3703 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3706 2) iASL Compiler/Disassembler and Tools:
3708 iASL: Fixed a problem with constant folding for fixed-length constant
3709 expressions. The constant-folding code was not being invoked for constant
3710 expressions that allow the use of type 3/4/5 opcodes to generate
3712 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
3714 in the generation of invalid AML bytecode. ACPICA BZ 970.
3716 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
3717 apparently automatically emit some of the necessary externals. This
3719 handles these versions in order to eliminate generation warnings.
3721 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
3723 Disassembler: Add support to decode _PLD buffers. The decoded buffer
3725 within comments in the output file.
3727 Debugger: Fixed a regression with the "Threads" command where
3728 AE_BAD_PARAMETER was always returned.
3730 ----------------------------------------
3731 11 July 2012. Summary of changes for version 20120711:
3733 1) ACPICA Kernel-resident Subsystem:
3735 Fixed a possible fault in the return package object repair code. Fixes a
3736 problem that can occur when a lone package object is wrapped with an
3738 package object in order to force conformance to the ACPI specification.
3740 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
3744 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
3745 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
3746 ARB_DIS bit must be implemented in the host-dependent C3 processor power
3748 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
3750 Intel and other vendors. (for Intel: ICH4-M and earlier)
3752 This change removes the code to disable/enable bus master arbitration
3754 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
3756 resume problems on some machines. The change has been in use for over
3760 Implemented two new external interfaces to support host-directed dynamic
3762 table load and unload. They are intended to simplify the host
3764 of hot-plug support:
3765 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
3766 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
3768 See the ACPICA reference for additional details. Adds one new file,
3769 components/tables/tbxfload.c
3771 Implemented and deployed two new interfaces for errors and warnings that
3773 known to be caused by BIOS/firmware issues:
3774 AcpiBiosError: Prints "ACPI Firmware Error" message.
3775 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
3776 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
3778 and FADT errors. Additional deployment to be completed as appropriate in
3780 future. The associated conditional macros are ACPI_BIOS_ERROR and
3781 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
3786 Implicit notify support: ensure that no memory allocation occurs within a
3787 critical region. This fix moves a memory allocation outside of the time
3789 spinlock is held. Fixes issues on systems that do not allow this
3793 Split exception code utilities and tables into a new file,
3796 Example Code and Data Size: These are the sizes for the OS-independent
3797 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3799 version of the code includes the debug output trace mechanism and has a
3801 larger code and data size.
3804 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3805 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3807 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3808 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3811 2) iASL Compiler/Disassembler and Tools:
3813 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
3817 Debugger: Enhanced the "tables" command to emit additional information
3819 the current set of ACPI tables, including the owner ID and flags decode.
3821 Debugger: Reimplemented the "unload" command to use the new
3822 AcpiUnloadParentTable external interface. This command was disable
3824 due to need for an unload interface.
3826 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
3828 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
3830 ----------------------------------------
3831 20 June 2012. Summary of changes for version 20120620:
3834 1) ACPICA Kernel-resident Subsystem:
3836 Implemented support to expand the "implicit notify" feature to allow
3838 devices to be notified by a single GPE. This feature automatically
3840 runtime device notification in the absence of a BIOS-provided GPE control
3841 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
3843 provided by ACPICA for Windows compatibility, and is a workaround for
3846 code errors. See the description of the AcpiSetupGpeForWake interface in
3848 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
3850 Changed some comments and internal function names to simplify and ensure
3851 correctness of the Linux code translation. No functional changes.
3853 Example Code and Data Size: These are the sizes for the OS-independent
3854 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3856 version of the code includes the debug output trace mechanism and has a
3858 larger code and data size.
3861 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3862 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3864 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3865 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3868 2) iASL Compiler/Disassembler and Tools:
3870 Disassembler: Added support to emit short, commented descriptions for the
3872 predefined names in order to improve the readability of the disassembled
3873 output. ACPICA BZ 959. Changes include:
3874 1) Emit descriptions for all standard predefined names (_INI, _STA,
3877 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
3878 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
3881 AcpiSrc: Fixed several long-standing Linux code translation issues.
3883 descriptions in function headers are now translated properly to lower
3886 underscores. ACPICA BZ 961. Also fixes translation problems such as
3892 local_fADT -> local_FADT
3893 execute_oSI -> execute_OSI
3895 iASL: Fixed a problem where null bytes were inadvertently emitted into
3899 iASL: Added the existing debug options to the standard help screen. There
3901 no longer two different help screens. ACPICA BZ 957.
3903 AcpiHelp: Fixed some typos in the various predefined name descriptions.
3905 expand some of the descriptions where appropriate.
3907 iASL: Fixed the -ot option (display compile times/statistics). Was not
3909 properly for standard output; only worked for the debug file case.
3911 ----------------------------------------
3912 18 May 2012. Summary of changes for version 20120518:
3915 1) ACPICA Core Subsystem:
3917 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
3919 to block until asynchronous events such as notifies and GPEs have
3921 Within ACPICA, it is only called before a notify or GPE handler is
3922 removed/uninstalled. It also may be useful for the host OS within related
3923 drivers such as the Embedded Controller driver. See the ACPICA reference
3925 additional information. ACPICA BZ 868.
3927 ACPI Tables: Added a new error message for a possible overflow failure
3929 the conversion of FADT 32-bit legacy register addresses to internal
3932 bit GAS structure representation. The GAS has a one-byte "bit length"
3934 thus limiting the register length to 255 bits. ACPICA BZ 953.
3936 Example Code and Data Size: These are the sizes for the OS-independent
3937 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3939 version of the code includes the debug output trace mechanism and has a
3941 larger code and data size.
3944 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3945 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3947 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3948 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3951 2) iASL Compiler/Disassembler and Tools:
3953 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
3955 This keyword was added late in the ACPI 5.0 release cycle and was not
3956 implemented until now.
3958 Disassembler: Added support for Operation Region externals. Adds missing
3959 support for operation regions that are defined in another table, and
3960 referenced locally via a Field or BankField ASL operator. Now generates
3962 correct External statement.
3964 Disassembler: Several additional fixes for the External() statement
3966 related to some ASL operators. Also, order the External() statements
3967 alphabetically in the disassembler output. Fixes the External()
3970 the Create* field, Alias, and Scope operators:
3971 1) Create* buffer field operators - fix type mismatch warning on
3973 2) Alias - implement missing External support
3974 3) Scope - fix to make sure all necessary externals are emitted.
3976 iASL: Improved pathname support. For include files, merge the prefix
3978 with the file pathname and eliminate unnecessary components. Convert
3979 backslashes in all pathnames to forward slashes, for readability. Include
3981 pathname changes affect both #include and Include() type operators.
3983 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
3985 of a valid line by inserting a newline and then returning the EOF during
3987 next call to GetNextLine. Prevents the line from being ignored due to EOF
3990 iASL: Implemented some changes to enhance the IDE support (-vi option.)
3992 and Warning messages are now correctly recognized for both the source
3994 browser and the global error and warning counts.
3996 ----------------------------------------
3997 20 April 2012. Summary of changes for version 20120420:
4000 1) ACPICA Core Subsystem:
4002 Implemented support for multiple notify handlers. This change adds
4005 allow multiple system and device notify handlers on Device, Thermal Zone,
4007 Processor objects. This can simplify the host OS notification
4009 Also re-worked and restructured the entire notify support code to
4011 handler installation, handler removal, notify event queuing, and notify
4012 dispatch to handler(s). Note: there can still only be two global notify
4013 handlers - one for system notifies and one for device notifies. There are
4015 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4016 Moore, Rafael Wysocki.
4018 Fixed a regression in the package repair code where the object reference
4019 count was calculated incorrectly. Regression was introduced in the commit
4020 "Support to add Package wrappers".
4022 Fixed a couple possible memory leaks in the AML parser, in the error
4024 path. Jesper Juhl, Lin Ming.
4026 Example Code and Data Size: These are the sizes for the OS-independent
4027 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4028 debug version of the code includes the debug output trace mechanism and
4030 much larger code and data size.
4033 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4034 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4036 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4037 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4040 2) iASL Compiler/Disassembler and Tools:
4042 iASL: Fixed a problem with the resource descriptor support where the
4044 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4045 included in cumulative descriptor offset, resulting in incorrect values
4047 resource tags within resource descriptors appearing after a
4049 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4051 iASL and Preprocessor: Implemented full support for the #line directive
4053 correctly track original source file line numbers through the .i
4055 output file - for error and warning messages.
4057 iASL: Expand the allowable byte constants for address space IDs.
4059 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4060 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4062 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4064 iASL: Add option to completely disable the preprocessor (-Pn).
4066 iASL: Now emit all error/warning messages to standard error (stderr) by
4067 default (instead of the previous stdout).
4069 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4071 for resource descriptor offset fix above. Update/cleanup error output
4072 routines. Enable and send iASL errors/warnings to an error logfile
4073 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4075 several extraneous "unrecognized operator" messages.
4077 ----------------------------------------
4078 20 March 2012. Summary of changes for version 20120320:
4081 1) ACPICA Core Subsystem:
4083 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4084 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4086 does not execute these methods, and therefore these methods are often
4087 untested. It has been seen on some systems where the execution of these
4088 methods causes errors and also prevents the machine from entering S5. It
4090 therefore suggested that host operating systems do not execute these
4092 by default. In the future, perhaps these methods can be optionally
4094 based on the age of the system and/or what is the newest version of
4096 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4098 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4101 Fixed a problem where the length of the local/common FADT was set too
4103 The local FADT table length cannot be set to the common length until the
4104 original length has been examined. There is code that checks the table
4106 and sets various fields appropriately. This can affect older machines
4108 early FADT versions. For example, this can cause inadvertent writes to
4110 CST_CNT register. Julian Anastasov.
4112 Fixed a mapping issue related to a physical table override. Use the
4114 mapping mechanism for tables loaded via the physical override OSL
4116 This allows for early mapping before the virtual memory manager is
4118 Thomas Renninger, Bob Moore.
4120 Enhanced the automatic return-object repair code: Repair a common problem
4122 predefined methods that are defined to return a variable-length Package
4124 sub-objects. If there is only one sub-object, some BIOS ASL code
4126 simply returns the single object instead of a Package with one sub-
4128 This new support will repair this error by wrapping a Package object
4130 the original object, creating the correct and expected Package with one
4132 object. Names that can be repaired in this manner include: _ALR, _CSD,
4134 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4137 Changed the exception code returned for invalid ACPI paths passed as
4138 parameters to external interfaces such as AcpiEvaluateObject. Was
4139 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
4141 Example Code and Data Size: These are the sizes for the OS-independent
4142 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4144 version of the code includes the debug output trace mechanism and has a
4146 larger code and data size.
4149 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4150 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4152 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4153 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4156 2) iASL Compiler/Disassembler and Tools:
4158 iASL: Added the infrastructure and initial implementation of a integrated
4160 like preprocessor. This will simplify BIOS development process by
4162 the need for a separate preprocessing step during builds. On Windows, it
4164 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4165 features including full #define() macro support are still under
4167 These preprocessor directives are supported:
4180 In addition, these new command line options are supported:
4181 -D <symbol> Define symbol for preprocessor use
4182 -li Create preprocessed output file (*.i)
4183 -P Preprocess only and create preprocessor output file (*.i)
4185 Table Compiler: Fixed a problem where the equals operator within an
4187 did not work properly.
4189 Updated iASL to use the current versions of Bison/Flex. Updated the
4191 project file to invoke these tools from the standard location. ACPICA BZ
4194 Flex for Windows: V2.5.4
4195 Bison for Windows: V2.4.1
4197 ----------------------------------------
4198 15 February 2012. Summary of changes for version 20120215:
4201 1) ACPICA Core Subsystem:
4203 There have been some major changes to the sleep/wake support code, as
4204 described below (a - e).
4206 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4207 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4208 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4210 time the _BFS method is called and the _WAK method is called. NOTE: all
4212 must update their wake/resume code or else sleep/wake will not work
4216 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4218 method. Some machines require that the GPEs are enabled before the _WAK
4220 is executed. Thomas Renninger.
4222 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4224 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4226 determine whether the system is rebooting or resuming. Matthew Garrett.
4228 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4230 match the ACPI specification requirement. Rafael Wysocki.
4232 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4233 registers within the V5 FADT. This support adds two new files:
4234 hardware/hwesleep.c implements the support for the new registers. Moved
4236 sleep/wake external interfaces to hardware/hwxfsleep.c.
4239 Added a new OSL interface for ACPI table overrides,
4240 AcpiOsPhysicalTableOverride. This interface allows the host to override a
4241 table via a physical address, instead of the logical address required by
4242 AcpiOsTableOverride. This simplifies the host implementation. Initial
4243 implementation by Thomas Renninger. The ACPICA implementation creates a
4245 shared function for table overrides that attempts both a logical and a
4248 Expanded the OSL memory read/write interfaces to 64-bit data
4249 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
4250 transfer support for GAS register structures passed to AcpiRead and
4253 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
4255 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
4257 See the ACPICA reference for details. ACPICA BZ 942. This option removes
4259 10% of the code and 5% of the static data, and the following hardware
4261 features become unavailable:
4262 PM Event and Control registers
4263 SCI interrupt (and handler)
4265 General Purpose Events (GPEs)
4268 FACS table (Waking vectors and Global Lock)
4270 Updated the unix tarball directory structure to match the ACPICA git
4272 tree. This ensures that the generic unix makefiles work properly (in
4273 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
4276 Updated the return value of the _REV predefined method to integer value 5
4278 reflect ACPI 5.0 support.
4280 Moved the external ACPI PM timer interface prototypes to the public
4282 file where they belong.
4284 Example Code and Data Size: These are the sizes for the OS-independent
4285 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4287 version of the code includes the debug output trace mechanism and has a
4289 larger code and data size.
4292 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4293 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4295 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4296 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4299 2) iASL Compiler/Disassembler and Tools:
4301 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
4302 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
4303 incorrectly displayed.
4305 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
4308 ----------------------------------------
4309 11 January 2012. Summary of changes for version 20120111:
4312 1) ACPICA Core Subsystem:
4314 Implemented a new mechanism to allow host device drivers to check for
4316 range conflicts with ACPI Operation Regions. Both SystemMemory and
4318 address spaces are supported. A new external interface,
4319 AcpiCheckAddressRange,
4320 allows drivers to check an address range against the ACPI namespace. See
4322 ACPICA reference for additional details. Adds one new file,
4323 utilities/utaddress.c. Lin Ming, Bob Moore.
4325 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
4328 Status registers, update the ACPI 5.0 flags, and update internal data
4329 structures to handle an FADT larger than 256 bytes. The size of the ACPI
4333 Updated all ACPICA copyrights and signons to 2012. Added the 2012
4335 all module headers and signons, including the standard Linux header. This
4336 affects virtually every file in the ACPICA core subsystem, iASL compiler,
4338 all ACPICA utilities.
4340 Example Code and Data Size: These are the sizes for the OS-independent
4341 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4343 version of the code includes the debug output trace mechanism and has a
4345 larger code and data size.
4348 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4349 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4351 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4352 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4355 2) iASL Compiler/Disassembler and Tools:
4357 Disassembler: fixed a problem with the automatic resource tag generation
4358 support. Fixes a problem where the resource tags are inadvertently not
4359 constructed if the table being disassembled contains external references
4361 control methods. Moved the actual construction of the tags to after the
4363 namespace is constructed (after 2nd parse is invoked due to external
4365 method references.) ACPICA BZ 941.
4367 Table Compiler: Make all "generic" operators caseless. These are the
4369 like UINT8, String, etc. Making these caseless improves ease-of-use.
4373 ----------------------------------------
4374 23 November 2011. Summary of changes for version 20111123:
4376 0) ACPI 5.0 Support:
4378 This release contains full support for the ACPI 5.0 specification, as
4381 Reduced Hardware Support:
4382 -------------------------
4384 This support allows for ACPI systems without the usual ACPI hardware.
4386 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
4388 not attempt to initialize or use any of the usual ACPI hardware. Note,
4390 this flag is set, all of the following ACPI hardware is assumed to be not
4391 present and is not initialized or accessed:
4393 General Purpose Events (GPEs)
4394 Fixed Events (PM1a/PM1b and PM Control)
4395 Power Management Timer and Console Buttons (power/sleep)
4396 Real-time Clock Alarm
4398 System Control Interrupt (SCI)
4399 The FACS is assumed to be non-existent
4404 All new tables and updates to existing tables are fully supported in the
4405 ACPICA headers (for use by device drivers), the disassembler, and the
4407 Data Table Compiler. ACPI 5.0 defines these new tables:
4409 BGRT /* Boot Graphics Resource Table */
4410 DRTM /* Dynamic Root of Trust for Measurement table */
4411 FPDT /* Firmware Performance Data Table */
4412 GTDT /* Generic Timer Description Table */
4413 MPST /* Memory Power State Table */
4414 PCCT /* Platform Communications Channel Table */
4415 PMTT /* Platform Memory Topology Table */
4416 RASF /* RAS Feature table */
4418 Operation Regions/SpaceIDs:
4419 ---------------------------
4421 All new operation regions are fully supported by the iASL compiler, the
4422 disassembler, and the ACPICA runtime code (for dispatch to region
4424 The new operation region Space IDs are:
4429 Resource Descriptors:
4430 ---------------------
4432 All new ASL resource descriptors are fully supported by the iASL
4435 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
4437 all new predefined resource tags). New descriptors are:
4446 ASL/AML Operators, New and Modified:
4447 ------------------------------------
4449 One new operator is added, the Connection operator, which is used to
4451 a GeneralPurposeIo or GenericSerialBus resource descriptor with
4453 field objects within an operation region. Several new protocols are
4455 with the AccessAs operator. All are fully supported by the iASL compiler,
4456 disassembler, and runtime ACPICA AML interpreter:
4458 Connection // Declare Field Connection
4460 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
4461 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
4463 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
4464 RawDataBuffer // Data type for Vendor Data
4467 Predefined ASL/AML Objects:
4468 ---------------------------
4470 All new predefined objects/control-methods are supported by the iASL
4472 and the ACPICA runtime validation/repair (arguments and return values.)
4474 predefined names include the following:
4476 Standard Predefined Names (Objects or Control Methods):
4477 _AEI, _CLS, _CPC, _CWS, _DEP,
4478 _DLM, _EVT, _GCP, _CRT, _GWS,
4479 _HRV, _PRE, _PSE, _SRT, _SUB.
4481 Resource Tags (Names used to access individual fields within resource
4483 _DBT, _DPL, _DRS, _END, _FLC,
4484 _IOR, _LIN, _MOD, _PAR, _PHA,
4485 _PIN, _PPI, _POL, _RXL, _SLV,
4486 _SPE, _STB, _TXL, _VEN.
4488 ACPICA External Interfaces:
4489 ---------------------------
4491 Several new interfaces have been defined for use by ACPI-related device
4492 drivers and other host OS services:
4494 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
4496 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
4497 provided by the BIOS. They are intended to be used in conjunction with
4499 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
4500 mutual exclusion with the AML code/interpreter.
4502 AcpiGetEventResources: Returns the (formatted) resource descriptors as
4504 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
4506 resource descriptors associated with hardware-reduced platform events,
4508 to the AcpiGetCurrentResources interface.
4510 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
4511 operation regions, information about the Connection() object and any
4513 length information is passed to the region handler within the Context
4516 AcpiBufferToResource: This interface converts a raw AML buffer containing
4518 resource template or resource descriptor to the ACPI_RESOURCE internal
4520 suitable for use by device drivers. Can be used by an operation region
4522 to convert the Connection() buffer object into a ACPI_RESOURCE.
4524 Miscellaneous/Tools/TestSuites:
4525 -------------------------------
4527 Support for extended _HID names (Four alpha characters instead of three).
4528 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
4529 Support for ACPI 5.0 features in the ASLTS test suite.
4530 Fully updated documentation (ACPICA and iASL reference documents.)
4532 ACPI Table Definition Language:
4533 -------------------------------
4535 Support for this language was implemented and released as a subsystem of
4537 iASL compiler in 2010. (See the iASL compiler User Guide.)
4540 Non-ACPI 5.0 changes for this release:
4541 --------------------------------------
4543 1) ACPICA Core Subsystem:
4545 Fix a problem with operation region declarations where a failure can
4548 the region name and an argument that evaluates to an object (such as the
4549 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
4552 Do not abort an ACPI table load if an invalid space ID is found within.
4554 will be caught later if the offending method is executed. ACPICA BZ 925.
4556 Fixed an issue with the FFixedHW space ID where the ID was not always
4557 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
4559 Fixed a problem with the 32-bit generation of the unix-specific OSL
4560 (osunixxf.c). Lin Ming, ACPICA BZ 936.
4562 Several changes made to enable generation with the GCC 4.6 compiler.
4566 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
4568 field registers out-of-range.
4570 2) iASL Compiler/Disassembler and Tools:
4572 iASL: Implemented the __PATH__ operator, which returns the full pathname
4574 the current source file.
4576 AcpiHelp: Automatically display expanded keyword information for all ASL
4579 Debugger: Add "Template" command to disassemble/dump resource template
4582 Added a new master script to generate and execute the ASLTS test suite.
4583 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
4585 iASL: Fix problem with listing generation during processing of the
4587 operator where AML listing was disabled until the entire Switch block was
4590 iASL: Improve support for semicolon statement terminators. Fix "invalid
4591 character" message for some cases when the semicolon is used. Semicolons
4593 now allowed after every <Term> grammar element. ACPICA BZ 927.
4595 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
4598 Disassembler: Fix problem with disassembly of the DataTableRegion
4600 where an inadvertent "Unhandled deferred opcode" message could be
4603 3) Example Code and Data Size
4605 These are the sizes for the OS-independent acpica.lib produced by the
4606 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4607 includes the debug output trace mechanism and has a much larger code and
4612 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4613 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4615 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4616 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4618 ----------------------------------------
4619 22 September 2011. Summary of changes for version 20110922:
4623 Support for ACPI 5.0 in ACPICA has been underway for several months and
4625 be released at the same time that ACPI 5.0 is officially released.
4627 The ACPI 5.0 specification is on track for release in the next few
4630 1) ACPICA Core Subsystem:
4632 Fixed a problem where the maximum sleep time for the Sleep() operator was
4633 intended to be limited to two seconds, but was inadvertently limited to
4637 Linux and Unix makefiles: Added header file dependencies to ensure
4639 generation of ACPICA core code and utilities. Also simplified the
4641 considerably through the use of the vpath variable to specify search
4645 2) iASL Compiler/Disassembler and Tools:
4647 iASL: Implemented support to check the access length for all fields
4649 access named Resource Descriptor fields. For example, if a resource field
4651 defined to be two bits, a warning is issued if a CreateXxxxField() is
4653 with an incorrect bit length. This is implemented for all current
4655 descriptor names. ACPICA BZ 930.
4657 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
4661 iASL: Fixed a couple of issues associated with variable-length package
4662 objects. 1) properly handle constants like One, Ones, Zero -- do not make
4664 VAR_PACKAGE when these are used as a package length. 2) Allow the
4666 opcode (in addition to PACKAGE) when validating object types for
4670 iASL: Emit statistics for all output files (instead of just the ASL input
4672 AML output). Includes listings, hex files, etc.
4674 iASL: Added -G option to the table compiler to allow the compilation of
4676 ACPI tables. The only part of a table that is required is the standard
4681 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
4683 which also adds correct 64-bit support. Also, now all output filenames
4685 completely lower case.
4687 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
4688 loading table files. A warning is issued for any such tables. The only
4689 exception is an FADT. This also fixes a possible fault when attempting to
4691 non-AML tables. ACPICA BZ 932.
4693 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
4695 missing table terminator could cause a fault when using the -p option.
4697 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
4700 3) Example Code and Data Size
4702 These are the sizes for the OS-independent acpica.lib produced by the
4703 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4704 includes the debug output trace mechanism and has a much larger code and
4708 Previous Release (VC 9.0):
4709 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4710 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4711 Current Release (VC 9.0):
4712 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4713 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4716 ----------------------------------------
4717 23 June 2011. Summary of changes for version 20110623:
4719 1) ACPI CA Core Subsystem:
4721 Updated the predefined name repair mechanism to not attempt repair of a
4723 return object if a _PSS object is present. We can only sort the _TSS
4725 package if there is no _PSS within the same scope. This is because if
4728 present, the ACPI specification dictates that the _TSS Power Dissipation
4730 is to be ignored, and therefore some BIOSs leave garbage values in the
4732 Power field(s). In this case, it is best to just return the _TSS package
4734 is. Reported by, and fixed with assistance from Fenghua Yu.
4736 Added an option to globally disable the control method return value
4738 and repair. This runtime option can be used to disable return value
4741 this is causing a problem on a particular machine. Also added an option
4743 AcpiExec (-dr) to set this disable flag.
4745 All makefiles and project files: Major changes to improve generation of
4747 tools. ACPICA BZ 912:
4748 Reduce default optimization levels to improve compatibility
4749 For Linux, add strict-aliasing=0 for gcc 4
4750 Cleanup and simplify use of command line defines
4751 Cleanup multithread library support
4752 Improve usage messages
4754 Linux-specific header: update handling of THREAD_ID and pthread. For the
4756 bit case, improve casting to eliminate possible warnings, especially with
4760 Example Code and Data Size: These are the sizes for the OS-independent
4761 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4763 version of the code includes the debug output trace mechanism and has a
4765 larger code and data size.
4767 Previous Release (VC 9.0):
4768 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4769 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4770 Current Release (VC 9.0):
4771 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4772 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4774 2) iASL Compiler/Disassembler and Tools:
4776 With this release, a new utility named "acpihelp" has been added to the
4778 package. This utility summarizes the ACPI specification chapters for the
4780 and AML languages. It generates under Linux/Unix as well as Windows, and
4781 provides the following functionality:
4782 Find/display ASL operator(s) -- with description and syntax.
4783 Find/display ASL keyword(s) -- with exact spelling and descriptions.
4784 Find/display ACPI predefined name(s) -- with description, number
4785 of arguments, and the return value data type.
4786 Find/display AML opcode name(s) -- with opcode, arguments, and
4788 Decode/display AML opcode -- with opcode name, arguments, and
4791 Service Layers: Make multi-thread support configurable. Conditionally
4793 the multi-thread support so that threading libraries will not be linked
4796 necessary. The only tool that requires multi-thread support is AcpiExec.
4798 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
4800 Bison appear to want the interface to yyerror to be a const char * (or at
4801 least this is a problem when generating iASL on some systems.) ACPICA BZ
4805 Tools: Fix for systems where O_BINARY is not defined. Only used for
4807 versions of the tools.
4809 ----------------------------------------
4810 27 May 2011. Summary of changes for version 20110527:
4812 1) ACPI CA Core Subsystem:
4814 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
4816 signature. Now, only allow SSDT, OEMx, and a null signature. History:
4817 1) Originally, we checked the table signature for "SSDT" or "PSDT".
4818 (PSDT is now obsolete.)
4819 2) We added support for OEMx tables, signature "OEM" plus a fourth
4820 "don't care" character.
4821 3) Valid tables were encountered with a null signature, so we just
4822 gave up on validating the signature, (05/2008).
4823 4) We encountered non-AML tables such as the MADT, which caused
4824 interpreter errors and kernel faults. So now, we once again allow
4825 only SSDT, OEMx, and now, also a null signature. (05/2011).
4827 Added the missing _TDL predefined name to the global name list in order
4829 enable validation. Affects both the core ACPICA code and the iASL
4832 Example Code and Data Size: These are the sizes for the OS-independent
4833 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4835 version of the code includes the debug output trace mechanism and has a
4837 larger code and data size.
4839 Previous Release (VC 9.0):
4840 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4841 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4842 Current Release (VC 9.0):
4843 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4844 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4846 2) iASL Compiler/Disassembler and Tools:
4848 Debugger/AcpiExec: Implemented support for "complex" method arguments on
4850 debugger command line. This adds support beyond simple integers --
4852 Strings, Buffers, and Packages. Includes support for nested packages.
4853 Increased the default command line buffer size to accommodate these
4855 See the ACPICA reference for details and syntax. ACPICA BZ 917.
4857 Debugger/AcpiExec: Implemented support for "default" method arguments for
4859 Execute/Debug command. Now, the debugger will always invoke a control
4861 with the required number of arguments -- even if the command line
4863 none or insufficient arguments. It uses default integer values for any
4865 arguments. Also fixes a bug where only six method arguments maximum were
4866 supported instead of the required seven.
4868 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
4870 also return status in order to prevent buffer overruns. See the ACPICA
4871 reference for details and syntax. ACPICA BZ 921
4873 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
4874 makefiles to simplify support for the two different but similar parser
4875 generators, bison and yacc.
4877 Updated the generic unix makefile for gcc 4. The default gcc version is
4879 expected to be 4 or greater, since options specific to gcc 4 are used.
4881 ----------------------------------------
4882 13 April 2011. Summary of changes for version 20110413:
4884 1) ACPI CA Core Subsystem:
4886 Implemented support to execute a so-called "orphan" _REG method under the
4888 device. This change will force the execution of a _REG method underneath
4891 device even if there is no corresponding operation region of type
4892 EmbeddedControl. Fixes a problem seen on some machines and apparently is
4893 compatible with Windows behavior. ACPICA BZ 875.
4895 Added more predefined methods that are eligible for automatic NULL
4897 element removal. This change adds another group of predefined names to
4900 of names that can be repaired by having NULL package elements dynamically
4901 removed. This group are those methods that return a single variable-
4903 package containing simple data types such as integers, buffers, strings.
4905 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
4908 and _TZD. ACPICA BZ 914.
4910 Split and segregated all internal global lock functions to a new file,
4913 Updated internal address SpaceID for DataTable regions. Moved this
4916 id in preparation for ACPI 5.0 changes that will include some new space
4919 change should not affect user/host code.
4921 Example Code and Data Size: These are the sizes for the OS-independent
4923 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4925 the code includes the debug output trace mechanism and has a much larger
4930 Previous Release (VC 9.0):
4931 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4932 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4933 Current Release (VC 9.0):
4934 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4935 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4937 2) iASL Compiler/Disassembler and Tools:
4939 iASL/DTC: Major update for new grammar features. Allow generic data types
4941 custom ACPI tables. Field names are now optional. Any line can be split
4943 multiple lines using the continuation char (\). Large buffers now use
4945 continuation character(s) and no colon on the continuation lines. See the
4947 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
4950 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
4952 Since the parser stuffs a "zero" as the return value for these statements
4955 the underlying AML grammar), they were seen as "return with value" by the
4957 semantic checking. They are now seen correctly as "null" return
4960 iASL: Check if a_REG declaration has a corresponding Operation Region.
4962 check for each _REG to ensure that there is in fact a corresponding
4964 region declaration in the same scope. If not, the _REG method is not very
4966 since it probably won't be executed. ACPICA BZ 915.
4968 iASL/DTC: Finish support for expression evaluation. Added a new
4971 that implements c-style operator precedence and parenthesization. ACPICA
4975 Disassembler/DTC: Remove support for () and <> style comments in data
4978 that DTC has full expression support, we don't want to have comment
4981 start with a parentheses or a less-than symbol. Now, only the standard /*
4984 comments are supported, as well as the bracket [] comments.
4986 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
4988 headers in the acpidump file. Update the header validation to support
4990 tables. Problem introduced in previous AcpiXtract version in the change
4992 support "wrong checksum" error messages emitted by acpidump utility.
4994 iASL: Add a * option to generate all template files (as a synonym for
4998 "iasl -T *" or "iasl -T ALL".
5000 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5002 abort the compiler on "fatal" errors, simply should abort the current
5004 This allows multiple compiles with a single (possibly wildcard) compiler
5007 ----------------------------------------
5008 16 March 2011. Summary of changes for version 20110316:
5010 1) ACPI CA Core Subsystem:
5012 Fixed a problem caused by a _PRW method appearing at the namespace root
5014 during the setup of wake GPEs. A fault could occur if a _PRW directly
5017 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5019 Implemented support for "spurious" Global Lock interrupts. On some
5021 global lock interrupt can occur without the pending flag being set. Upon
5024 interrupt, we now ensure that a thread is actually waiting for the lock
5026 signaling GL availability. Rafael Wysocki, Bob Moore.
5028 Example Code and Data Size: These are the sizes for the OS-independent
5030 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5032 the code includes the debug output trace mechanism and has a much larger
5037 Previous Release (VC 9.0):
5038 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5039 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5040 Current Release (VC 9.0):
5041 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5042 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5044 2) iASL Compiler/Disassembler and Tools:
5046 Implemented full support for the "SLIC" ACPI table. Includes support in
5048 header files, disassembler, table compiler, and template generator. Bob
5052 AcpiXtract: Correctly handle embedded comments and messages from
5054 Apparently some or all versions of acpidump will occasionally emit a
5057 "Wrong checksum", etc., into the dump file. This was causing problems for
5058 AcpiXtract. ACPICA BZ 905.
5060 iASL: Fix the Linux makefile by removing an inadvertent double file
5064 AcpiExec: Update installation of operation region handlers. Install one
5066 for a user-defined address space. This is used by the ASL test suite
5069 ----------------------------------------
5070 11 February 2011. Summary of changes for version 20110211:
5072 1) ACPI CA Core Subsystem:
5074 Added a mechanism to defer _REG methods for some early-installed
5076 Most user handlers should be installed before call to
5077 AcpiEnableSubsystem.
5078 However, Event handlers and region handlers should be installed after
5079 AcpiInitializeObjects. Override handlers for the "default" regions should
5081 installed early, however. This change executes all _REG methods for the
5082 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5083 chicken/egg issues between them. ACPICA BZ 848.
5085 Implemented an optimization for GPE detection. This optimization will
5087 ignore GPE registers that contain no enabled GPEs -- there is no need to
5088 read the register since this information is available internally. This
5089 becomes more important on machines with a large GPE space. ACPICA
5091 884. Lin Ming. Suggestion from Joe Liu.
5093 Removed all use of the highly unreliable FADT revision field. The
5095 number in the FADT has been found to be completely unreliable and cannot
5097 trusted. Only the actual table length can be used to infer the version.
5099 change updates the ACPICA core and the disassembler so that both no
5101 even look at the FADT version and instead depend solely upon the FADT
5104 Fix an unresolved name issue for the no-debug and no-error-message source
5105 generation cases. The _AcpiModuleName was left undefined in these cases,
5107 it is actually needed as a parameter to some interfaces. Define
5108 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5110 Split several large files (makefiles and project files updated)
5111 utglobal.c -> utdecode.c
5112 dbcomds.c -> dbmethod.c dbnames.c
5113 dsopcode.c -> dsargs.c dscontrol.c
5114 dsload.c -> dsload2.c
5115 aslanalyze.c -> aslbtypes.c aslwalks.c
5117 Example Code and Data Size: These are the sizes for the OS-independent
5118 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5119 debug version of the code includes the debug output trace mechanism and
5121 a much larger code and data size.
5123 Previous Release (VC 9.0):
5124 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5125 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5126 Current Release (VC 9.0):
5127 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5128 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5130 2) iASL Compiler/Disassembler and Tools:
5132 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5133 These are useful C-style macros with the standard definitions. ACPICA
5136 iASL/DTC: Added support for integer expressions and labels. Support for
5138 expressions for all integer fields in all ACPI tables. Support for labels
5140 "generic" portions of tables such as UEFI. See the iASL reference manual.
5142 Debugger: Added a command to display the status of global handlers. The
5143 "handlers" command will display op region, fixed event, and miscellaneous
5144 global handlers. installation status -- and for op regions, whether
5146 or user-installed handler will be used.
5148 iASL: Warn if reserved method incorrectly returns a value. Many
5150 names are defined such that they do not return a value. If implemented as
5152 method, issue a warning if such a name explicitly returns a value. ACPICA
5155 iASL: Added detection of GPE method name conflicts. Detects a conflict
5157 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5159 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5161 iASL/DTC: Fixed a couple input scanner issues with comments and line
5162 numbers. Comment remover could get confused and miss a comment ending.
5164 a problem with line counter maintenance.
5166 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5168 no need to abort on simple errors within a field definition.
5170 Debugger: Simplified the output of the help command. All help output now
5172 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5174 ----------------------------------------
5175 12 January 2011. Summary of changes for version 20110112:
5177 1) ACPI CA Core Subsystem:
5179 Fixed a race condition between method execution and namespace walks that
5181 possibly cause a fault. The problem was apparently introduced in version
5182 20100528 as a result of a performance optimization that reduces the
5185 namespace walks upon method exit by using the delete_namespace_subtree
5186 function instead of the delete_namespace_by_owner function used
5188 Bug is a missing namespace lock in the delete_namespace_subtree function.
5189 dana.myers@oracle.com
5191 Fixed several issues and a possible fault with the automatic "serialized"
5192 method support. History: This support changes a method to "serialized" on
5194 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5195 possibility that it cannot handle reentrancy. This fix repairs a couple
5197 issues seen in the field, especially on machines with many cores:
5199 1) Delete method children only upon the exit of the last thread,
5200 so as to not delete objects out from under other running threads
5201 (and possibly causing a fault.)
5202 2) Set the "serialized" bit for the method only upon the exit of the
5203 Last thread, so as to not cause deadlock when running threads
5205 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5206 so that there is no longer any confusion between the two.
5208 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5210 Debugger: Now lock the namespace for duration of a namespace dump.
5212 issues if the namespace is changing dynamically underneath the debugger.
5213 Especially affects temporary namespace nodes, since the debugger displays
5216 Updated the ordering of include files. The ACPICA headers should appear
5217 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5219 any necessary compiler-specific defines, etc. Affects the ACPI-related
5223 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5225 to all module headers and signons, including the Linux header. This
5227 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5230 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5231 project files for VC++ 6.0 are now obsolete. New project files can be
5233 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5236 Example Code and Data Size: These are the sizes for the OS-independent
5237 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5238 debug version of the code includes the debug output trace mechanism and
5240 much larger code and data size.
5242 Previous Release (VC 6.0):
5243 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5244 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5245 Current Release (VC 9.0):
5246 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5247 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5249 2) iASL Compiler/Disassembler and Tools:
5251 iASL: Added generic data types to the Data Table compiler. Add "generic"
5253 types such as UINT32, String, Unicode, etc., to simplify the generation
5255 platform-defined tables such as UEFI. Lin Ming.
5257 iASL: Added listing support for the Data Table Compiler. Adds listing
5259 (-l) to display actual binary output for each line of input code.
5261 ----------------------------------------
5262 09 December 2010. Summary of changes for version 20101209:
5264 1) ACPI CA Core Subsystem:
5266 Completed the major overhaul of the GPE support code that was begun in
5268 2010. Major features include: removal of _PRW execution in ACPICA (host
5269 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
5270 changes to existing interfaces, simplification of GPE handler operation,
5272 a handful of new interfaces:
5278 One new file, evxfgpe.c to consolidate all external GPE interfaces.
5280 See the ACPICA Programmer Reference for full details and programming
5281 information. See the new section 4.4 "General Purpose Event (GPE)
5283 for a full overview, and section 8.7 "ACPI General Purpose Event
5285 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
5287 Bob Moore, Rafael Wysocki.
5289 Implemented a new GPE feature for Windows compatibility, the "Implicit
5291 GPE Notify". This feature will automatically issue a Notify(2) on a
5293 when a Wake GPE is received if there is no corresponding GPE method or
5294 handler. ACPICA BZ 870.
5296 Fixed a problem with the Scope() operator during table parse and load
5298 During load phase (table load or method execution), the scope operator
5300 not enter the target into the namespace. Instead, it should open a new
5302 at the target location. Linux BZ 19462, ACPICA BZ 882.
5304 Example Code and Data Size: These are the sizes for the OS-independent
5305 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5306 debug version of the code includes the debug output trace mechanism and
5308 much larger code and data size.
5311 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5312 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5314 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5315 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5317 2) iASL Compiler/Disassembler and Tools:
5319 iASL: Relax the alphanumeric restriction on _CID strings. These strings
5321 "bus-specific" per the ACPI specification, and therefore any characters
5323 acceptable. The only checks that can be performed are for a null string
5325 perhaps for a leading asterisk. ACPICA BZ 886.
5327 iASL: Fixed a problem where a syntax error that caused a premature EOF
5328 condition on the source file emitted a very confusing error message. The
5329 premature EOF is now detected correctly. ACPICA BZ 891.
5331 Disassembler: Decode the AccessSize within a Generic Address Structure
5333 access, word access, etc.) Note, this field does not allow arbitrary bit
5334 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
5336 New: AcpiNames utility - Example namespace dump utility. Shows an example
5338 ACPICA configuration for a minimal namespace dump utility. Uses table and
5339 namespace managers, but no AML interpreter. Does not add any
5341 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
5342 partition and configure ACPICA. ACPICA BZ 883.
5344 AML Debugger: Increased the debugger buffer size for method return
5346 Was 4K, increased to 16K. Also enhanced error messages for debugger
5348 execution, including the buffer overflow case.
5350 ----------------------------------------
5351 13 October 2010. Summary of changes for version 20101013:
5353 1) ACPI CA Core Subsystem:
5355 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
5357 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
5358 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
5360 Changed the type of the predefined namespace object _TZ from ThermalZone
5362 Device. This was found to be confusing to the host software that
5364 the various thermal zones, since _TZ is not really a ThermalZone.
5367 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
5370 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
5371 string is "Windows 2006 SP2".
5373 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
5375 code automatically repairs _HID-related strings, this type of code is no
5376 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
5379 Example Code and Data Size: These are the sizes for the OS-independent
5380 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5381 debug version of the code includes the debug output trace mechanism and
5383 much larger code and data size.
5386 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5387 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5389 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5390 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5392 2) iASL Compiler/Disassembler and Tools:
5394 iASL: Implemented additional compile-time validation for _HID strings.
5396 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
5399 the string must be exactly seven or eight characters. For both _HID and
5401 strings, all characters must be alphanumeric. ACPICA BZ 874.
5403 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
5404 descriptors that are mostly or all zeros, with the expectation that they
5406 be filled in at runtime. iASL now allows this as long as there is a
5408 tag" (name) associated with the descriptor, which gives the ASL a handle
5409 needed to modify the descriptor. ACPICA BZ 873.
5411 Added single-thread support to the generic Unix application OSL.
5413 for iASL support, this change removes the use of semaphores in the
5415 threaded ACPICA tools/applications - increasing performance. The
5416 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
5417 option. ACPICA BZ 879.
5419 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
5421 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
5423 iASL: Moved all compiler messages to a new file, aslmessages.h.
5425 ----------------------------------------
5426 15 September 2010. Summary of changes for version 20100915:
5428 1) ACPI CA Core Subsystem:
5430 Removed the AcpiOsDerivePciId OSL interface. The various host
5432 of this function were not OS-dependent and are now obsolete and can be
5433 removed from all host OSLs. This function has been replaced by
5434 AcpiHwDerivePciId, which is now part of the ACPICA core code.
5435 AcpiHwDerivePciId has been implemented without recursion. Adds one new
5436 module, hwpci.c. ACPICA BZ 857.
5438 Implemented a dynamic repair for _HID and _CID strings. The following
5439 problems are now repaired at runtime: 1) Remove a leading asterisk in the
5440 string, and 2) the entire string is uppercased. Both repairs are in
5441 accordance with the ACPI specification and will simplify host driver
5445 The ACPI_THREAD_ID type is no longer configurable, internally it is now
5446 always UINT64. This simplifies the ACPICA code, especially any printf
5448 UINT64 is the only common data type for all thread_id types across all
5449 operating systems. It is now up to the host OSL to cast the native
5451 type to UINT64 before returning the value to ACPICA (via
5453 Lin Ming, Bob Moore.
5455 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
5457 keyword is not standard across compilers, and this type allows inline to
5459 configured on a per-compiler basis. Lin Ming.
5461 Made the system global AcpiGbl_SystemAwakeAndRunning publically
5463 Added an extern for this boolean in acpixf.h. Some hosts utilize this
5465 during suspend/restore operations. ACPICA BZ 869.
5467 All code that implements error/warning messages with the "ACPI:" prefix
5469 been moved to a new module, utxferror.c.
5471 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
5473 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
5475 Example Code and Data Size: These are the sizes for the OS-independent
5476 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5477 debug version of the code includes the debug output trace mechanism and
5479 much larger code and data size.
5482 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5483 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5485 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5486 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5488 2) iASL Compiler/Disassembler and Tools:
5490 iASL/Disassembler: Write ACPI errors to stderr instead of the output
5492 This keeps the output files free of random error messages that may
5494 from within the namespace/interpreter code. Used this opportunity to
5496 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
5497 866. Lin Ming, Bob Moore.
5499 Tools: update some printfs for ansi warnings on size_t. Handle width
5501 of size_t on 32-bit versus 64-bit generations. Lin Ming.
5503 ----------------------------------------
5504 06 August 2010. Summary of changes for version 20100806:
5506 1) ACPI CA Core Subsystem:
5508 Designed and implemented a new host interface to the _OSI support code.
5510 will allow the host to dynamically add or remove multiple _OSI strings,
5512 well as install an optional handler that is called for each _OSI
5514 Also added a new AML debugger command, 'osi' to display and modify the
5516 _OSI string table, and test support in the AcpiExec utility. See the
5518 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
5520 AcpiInstallInterface - Add an _OSI string.
5521 AcpiRemoveInterface - Delete an _OSI string.
5522 AcpiInstallInterfaceHandler - Install optional _OSI handler.
5524 AcpiOsValidateInterface - no longer used.
5526 source/components/utilities/utosi.c
5528 Re-introduced the support to enable multi-byte transfers for Embedded
5529 Controller (EC) operation regions. A reported problem was found to be a
5531 in the host OS, not in the multi-byte support. Previously, the maximum
5533 size passed to the EC operation region handler was a single byte. There
5535 often EC Fields larger than one byte that need to be transferred, and it
5537 useful for the EC driver to lock these as a single transaction. This
5539 enables single transfers larger than 8 bits. This effectively changes the
5540 access to the EC space from ByteAcc to AnyAcc, and will probably require
5541 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
5543 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
5545 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
5546 prototype in acpiosxf.h had the output value pointer as a (void *).
5547 It should be a (UINT64 *). This may affect some host OSL code.
5549 Fixed a couple problems with the recently modified Linux makefiles for
5551 and AcpiExec. These new makefiles place the generated object files in the
5552 local directory so that there can be no collisions between the files that
5554 shared between them that are compiled with different options.
5556 Example Code and Data Size: These are the sizes for the OS-independent
5557 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5558 debug version of the code includes the debug output trace mechanism and
5560 much larger code and data size.
5563 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5564 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5566 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5567 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5569 2) iASL Compiler/Disassembler and Tools:
5571 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
5573 namespace from and disassemble an entire group of AML files. Useful for
5574 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
5576 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
5578 iASL: Allow multiple invocations of -e option. This change allows
5580 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
5584 ----------------------------------------
5585 02 July 2010. Summary of changes for version 20100702:
5587 1) ACPI CA Core Subsystem:
5589 Implemented several updates to the recently added GPE reference count
5590 support. The model for "wake" GPEs is changing to give the host OS
5592 control of these GPEs. Eventually, the ACPICA core will not execute any
5594 methods, since the host already must execute them. Also, additional
5596 were made to help ensure that the reference counts are kept in proper
5597 synchronization with reality. Rafael J. Wysocki.
5599 1) Ensure that GPEs are not enabled twice during initialization.
5600 2) Ensure that GPE enable masks stay in sync with the reference count.
5601 3) Do not inadvertently enable GPEs when writing GPE registers.
5602 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
5603 interface. This interface will set or clear individual GPEs for wakeup.
5604 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
5606 are now used for "runtime" GPEs only.
5608 Changed the behavior of the GPE install/remove handler interfaces. The
5611 no longer disabled during this process, as it was found to cause problems
5613 some machines. Rafael J. Wysocki.
5615 Reverted a change introduced in version 20100528 to enable Embedded
5616 Controller multi-byte transfers. This change was found to cause problems
5618 Index Fields and possibly Bank Fields. It will be reintroduced when these
5619 problems have been resolved.
5621 Fixed a problem with references to Alias objects within Package Objects.
5623 reference to an Alias within the definition of a Package was not always
5624 resolved properly. Aliases to objects like Processors, Thermal zones,
5626 were resolved to the actual object instead of a reference to the object
5629 should be. Package objects are only allowed to contain integer, string,
5630 buffer, package, and reference objects. Redhat bugzilla 608648.
5632 Example Code and Data Size: These are the sizes for the OS-independent
5633 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5634 debug version of the code includes the debug output trace mechanism and
5636 much larger code and data size.
5639 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5640 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5642 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5643 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5645 2) iASL Compiler/Disassembler and Tools:
5647 iASL: Implemented a new compiler subsystem to allow definition and
5648 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
5650 are called "ACPI Data Tables", and the new compiler is the "Data Table
5651 Compiler". This compiler is intended to simplify the existing error-prone
5652 process of creating these tables for the BIOS, as well as allowing the
5653 disassembly, modification, recompilation, and override of existing ACPI
5655 tables. See the iASL User Guide for detailed information.
5657 iASL: Implemented a new Template Generator option in support of the new
5659 Table Compiler. This option will create examples of all known ACPI tables
5660 that can be used as the basis for table development. See the iASL
5661 documentation and the -T option.
5663 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
5666 Updated the Linux makefiles for iASL and AcpiExec to place the generated
5667 object files in the local directory so that there can be no collisions
5668 between the shared files between them that are generated with different
5671 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
5673 the #define __APPLE__ to enable this support.
5675 ----------------------------------------
5676 28 May 2010. Summary of changes for version 20100528:
5678 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
5679 available at www.acpi.info. This is primarily an errata release.
5681 1) ACPI CA Core Subsystem:
5683 Undefined ACPI tables: We are looking for the definitions for the
5685 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
5687 Implemented support to enable multi-byte transfers for Embedded
5689 (EC) operation regions. Previously, the maximum data size passed to the
5691 operation region handler was a single byte. There are often EC Fields
5693 than one byte that need to be transferred, and it is useful for the EC
5695 to lock these as a single transaction. This change enables single
5697 larger than 8 bits. This effectively changes the access to the EC space
5699 ByteAcc to AnyAcc, and will probably require changes to the host OS
5701 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
5703 transfers. Alexey Starikovskiy, Lin Ming
5705 Implemented a performance enhancement for namespace search and access.
5707 change enhances the performance of namespace searches and walks by adding
5709 backpointer to the parent in each namespace node. On large namespaces,
5711 change can improve overall ACPI performance by up to 9X. Adding a pointer
5713 each namespace node increases the overall size of the internal namespace
5715 about 5%, since each namespace entry usually consists of both a namespace
5716 node and an ACPI operand object. However, this is the first growth of the
5717 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
5719 Implemented a performance optimization that reduces the number of
5721 walks. On control method exit, only walk the namespace if the method is
5723 to have created namespace objects outside of its local scope. Previously,
5725 entire namespace was traversed on each control method exit. This change
5727 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
5730 Added support to truncate I/O addresses to 16 bits for Windows
5732 Some ASL code has been seen in the field that inadvertently has bits set
5733 above bit 15. This feature is optional and is enabled if the BIOS
5735 any Windows OSI strings. It can also be enabled by the host OS. Matthew
5738 Added support to limit the maximum time for the ASL Sleep() operator. To
5739 prevent accidental deep sleeps, limit the maximum time that Sleep() will
5740 actually sleep. Configurable, the default maximum is two seconds. ACPICA
5743 Added run-time validation support for the _WDG and_WED Microsoft
5745 methods. These objects are defined by "Windows Instrumentation", and are
5747 part of the ACPI spec. ACPICA BZ 860.
5749 Expanded all statistic counters used during namespace and device
5750 initialization from 16 to 32 bits in order to support very large
5753 Replaced all instances of %d in printf format specifiers with %u since
5755 all integers in ACPICA are unsigned.
5757 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
5761 Example Code and Data Size: These are the sizes for the OS-independent
5762 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5763 debug version of the code includes the debug output trace mechanism and
5765 much larger code and data size.
5768 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5769 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5771 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5772 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5774 2) iASL Compiler/Disassembler and Tools:
5776 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
5777 methods. These objects are defined by "Windows Instrumentation", and are
5779 part of the ACPI spec. ACPICA BZ 860.
5781 AcpiExec: added option to disable the memory tracking mechanism. The -dt
5782 option will disable the tracking mechanism, which improves performance
5785 AcpiExec: Restructured the command line options into -d (disable) and -e
5788 ----------------------------------------
5789 28 April 2010. Summary of changes for version 20100428:
5791 1) ACPI CA Core Subsystem:
5793 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
5794 including FADT-based and GPE Block Devices, execute any _PRW methods in
5796 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
5797 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
5798 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
5799 Devices. Provides compatibility with other ACPI implementations. Two new
5800 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
5803 Fixed a regression introduced in version 20100331 within the table
5805 where initial table loading could fail. This was introduced in the fix
5807 AcpiReallocateRootTable. Also, renamed some of fields in the table
5809 data structures to clarify their meaning and use.
5811 Fixed a possible allocation overrun during internal object copy in
5812 AcpiUtCopySimpleObject. The original code did not correctly handle the
5814 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
5817 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
5818 possible access beyond end-of-allocation. Also, now fully validate
5820 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
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: 87.9K Code, 18.6K Data, 106.5K Total
5830 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5832 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5833 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5835 2) iASL Compiler/Disassembler and Tools:
5837 iASL: Implemented Min/Max/Len/Gran validation for address resource
5838 descriptors. This change implements validation for the address fields
5840 are common to all address-type resource descriptors. These checks are
5841 implemented: Checks for valid Min/Max, length within the Min/Max window,
5842 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
5844 table 6-40 in the ACPI 4.0a specification. Also split the large
5846 and aslrestype2.c files into five new files. ACPICA BZ 840.
5848 iASL: Added support for the _Wxx predefined names. This support was
5850 and these names were not recognized by the compiler as valid predefined
5851 names. ACPICA BZ 851.
5853 iASL: Added an error for all predefined names that are defined to return
5855 value and thus must be implemented as Control Methods. These include all
5857 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
5858 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
5860 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
5862 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
5864 dynamically loaded via the Load() operator. Also cleaned up output for
5867 ta and -tc options. ACPICA BZ 853.
5869 Tests: Added a new file with examples of extended iASL error checking.
5870 Demonstrates the advanced error checking ability of the iASL compiler.
5871 Available at tests/misc/badcode.asl.
5873 ----------------------------------------
5874 31 March 2010. Summary of changes for version 20100331:
5876 1) ACPI CA Core Subsystem:
5878 Completed a major update for the GPE support in order to improve support
5880 shared GPEs and to simplify both host OS and ACPICA code. Added a
5882 count mechanism to support shared GPEs that require multiple device
5884 Several external interfaces have changed. One external interface has been
5885 removed. One new external interface was added. Most of the GPE external
5886 interfaces now use the GPE spinlock instead of the events mutex (and the
5887 Flags parameter for many GPE interfaces has been removed.) See the
5889 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
5891 Wysocki. ACPICA BZ 831.
5894 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
5900 Implemented write support for DataTable operation regions. These regions
5902 defined via the DataTableRegion() operator. Previously, only read support
5904 implemented. The ACPI specification allows DataTableRegions to be
5908 Implemented a new subsystem option to force a copy of the DSDT to local
5909 memory. Optionally copy the entire DSDT to local memory (instead of
5911 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
5913 the original DSDT, creating the need for this option. Default is FALSE,
5917 Implemented detection of a corrupted or replaced DSDT. This change adds
5918 support to detect a DSDT that has been corrupted and/or replaced from
5920 the OS (by firmware). This is typically catastrophic for the system, but
5922 been seen on some machines. Once this problem has been detected, the DSDT
5923 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
5925 Fixed two problems with AcpiReallocateRootTable during the root table
5927 When copying the root table to the new allocation, the length used was
5928 incorrect. The new size was used instead of the current table size,
5930 too much data was copied. Also, the count of available slots for ACPI
5932 was not set correctly. Alexey Starikovskiy, Bob Moore.
5934 Example Code and Data Size: These are the sizes for the OS-independent
5935 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5936 debug version of the code includes the debug output trace mechanism and
5938 much larger code and data size.
5941 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5942 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5944 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5945 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5947 2) iASL Compiler/Disassembler and Tools:
5949 iASL: Implement limited typechecking for values returned from predefined
5950 control methods. The type of any returned static (unnamed) object is now
5951 validated. For example, Return(1). ACPICA BZ 786.
5953 iASL: Fixed a predefined name object verification regression. Fixes a
5955 introduced in version 20100304. An error is incorrectly generated if a
5956 predefined name is declared as a static named object with a value defined
5957 using the keywords "Zero", "One", or "Ones". Lin Ming.
5959 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
5961 reducing the requested registry access rights. ACPICA BZ 842.
5963 Disassembler: fixed a possible fault when generating External()
5965 Introduced in commit ae7d6fd: Properly handle externals with parent-
5967 (carat). Fixes a string length allocation calculation. Lin Ming.
5969 ----------------------------------------
5970 04 March 2010. Summary of changes for version 20100304:
5972 1) ACPI CA Core Subsystem:
5974 Fixed a possible problem with the AML Mutex handling function
5975 AcpiExReleaseMutex where the function could fault under the very rare
5976 condition when the interpreter has blocked, the interpreter lock is
5978 the interpreter is then reentered via the same thread, and attempts to
5979 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
5983 Implemented additional configuration support for the AML "Debug Object".
5984 Output from the debug object can now be enabled via a global variable,
5985 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
5987 This debug output is now available in the release version of ACPICA
5989 of just the debug version. Also, the entire debug output module can now
5991 configured out of the ACPICA build if desired. One new file added,
5992 executer/exdebug.c. Lin Ming, Bob Moore.
5994 Added header support for the ACPI MCHI table (Management Controller Host
5995 Interface Table). This table was added in ACPI 4.0, but the defining
5997 has only recently become available.
5999 Standardized output of integer values for ACPICA warnings/errors. Always
6001 0x prefix for hex output, always use %u for unsigned integer decimal
6003 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6005 invocations.) These invocations were converted from the original
6006 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6008 Example Code and Data Size: These are the sizes for the OS-independent
6009 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6010 debug version of the code includes the debug output trace mechanism and
6012 much larger code and data size.
6015 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6016 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6018 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6019 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6021 2) iASL Compiler/Disassembler and Tools:
6023 iASL: Implemented typechecking support for static (non-control method)
6024 predefined named objects that are declared with the Name() operator. For
6025 example, the type of this object is now validated to be of type Integer:
6026 Name(_BBN, 1). This change migrates the compiler to using the core
6028 name table instead of maintaining a local version. Added a new file,
6029 aslpredef.c. ACPICA BZ 832.
6031 Disassembler: Added support for the ACPI 4.0 MCHI table.
6033 ----------------------------------------
6034 21 January 2010. Summary of changes for version 20100121:
6036 1) ACPI CA Core Subsystem:
6038 Added the 2010 copyright to all module headers and signons. This affects
6039 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6040 tools/utilities, and the test suites.
6042 Implemented a change to the AcpiGetDevices interface to eliminate
6044 invocations of the _STA method. In the case where a specific _HID is
6045 requested, do not run _STA until a _HID match is found. This eliminates
6046 potentially dozens of _STA calls during a search for a particular
6048 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6050 Implemented an additional repair for predefined method return values.
6052 to repair unexpected NULL elements within returned Package objects.
6055 Integer of value zero, a NULL String, or a zero-length Buffer as
6057 ACPICA BZ 818. Lin Ming, Bob Moore.
6059 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6061 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6063 64-bit AML integers). It is now obsolete and this change removes it from
6065 ACPICA code base, replaced by UINT64. The original typedef has been
6067 for now for compatibility with existing device driver code. ACPICA BZ
6070 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6072 the parse tree object.
6074 Added additional warning options for the gcc-4 generation. Updated the
6076 accordingly. This includes some code restructuring to eliminate
6078 code, elimination of some gotos, elimination of unused return values,
6080 additional casting, and removal of redundant declarations.
6082 Example Code and Data Size: These are the sizes for the OS-independent
6083 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6084 debug version of the code includes the debug output trace mechanism and
6086 much larger code and data size.
6089 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6090 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6092 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6093 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6095 2) iASL Compiler/Disassembler and Tools:
6097 No functional changes for this release.
6099 ----------------------------------------
6100 14 December 2009. Summary of changes for version 20091214:
6102 1) ACPI CA Core Subsystem:
6104 Enhanced automatic data type conversions for predefined name repairs.
6106 change expands the automatic repairs/conversions for predefined name
6108 values to make Integers, Strings, and Buffers fully interchangeable.
6111 Buffer can be converted to a Package of Integers if necessary. The
6113 module was completely restructured. Lin Ming, Bob Moore.
6115 Implemented automatic removal of null package elements during predefined
6117 repairs. This change will automatically remove embedded and trailing NULL
6118 package elements from returned package objects that are defined to
6121 variable number of sub-packages. The driver is then presented with a
6123 with no null elements to deal with. ACPICA BZ 819.
6125 Implemented a repair for the predefined _FDE and _GTM names. The expected
6126 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6128 possible problems (both seen in the field), where a package of integers
6130 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6133 Implemented additional module-level code support. This change will
6135 execute module-level code that is not at the root of the namespace (under
6137 Device object, etc.). Now executes the code within the current scope
6139 of the root. ACPICA BZ 762. Lin Ming.
6141 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6143 problem where mutex errors can occur when running a _REG method that is
6145 the same scope as a method-defined operation region or an operation
6147 under a module-level IF block. This type of code is rare, so the problem
6149 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6151 Fixed a possible memory leak during module-level code execution. An
6153 could be leaked for each block of executed module-level code if the
6154 interpreter slack mode is enabled This change deletes any implicitly
6156 object from the module-level code block. Lin Ming.
6158 Removed messages for successful predefined repair(s). The repair
6160 was considered too wordy. Now, messages are only unconditionally emitted
6162 the return object cannot be repaired. Existing messages for successful
6163 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6166 Example Code and Data Size: These are the sizes for the OS-independent
6167 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6168 debug version of the code includes the debug output trace mechanism and
6170 much larger code and data size.
6173 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6174 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6176 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6177 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6179 2) iASL Compiler/Disassembler and Tools:
6181 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6183 were no longer automatically removed at the termination of the compile.
6185 acpiexec: Implemented the -f option to specify default region fill value.
6186 This option specifies the value used to initialize buffers that simulate
6187 operation regions. Default value is zero. Useful for debugging problems
6189 depend on a specific initial value for a region or field.
6191 ----------------------------------------
6192 12 November 2009. Summary of changes for version 20091112:
6194 1) ACPI CA Core Subsystem:
6196 Implemented a post-order callback to AcpiWalkNamespace. The existing
6197 interface only has a pre-order callback. This change adds an additional
6198 parameter for a post-order callback which will be more useful for bus
6200 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6202 Modified the behavior of the operation region memory mapping cache for
6203 SystemMemory. Ensure that the memory mappings created for operation
6205 do not cross 4K page boundaries. Crossing a page boundary while mapping
6206 regions can cause kernel warnings on some hosts if the pages have
6208 attributes. Such regions are probably BIOS bugs, and this is the
6210 Linux BZ 14445. Lin Ming.
6212 Implemented an automatic repair for predefined methods that must return
6213 sorted lists. This change will repair (by sorting) packages returned by
6215 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6217 and do not contain NULL package elements. Adds one new file,
6218 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6220 Fixed a possible fault during predefined name validation if a return
6222 object contains NULL elements. Also adds a warning if a NULL element is
6223 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6225 include repair or removal of all such NULL elements where possible.
6227 Implemented additional module-level executable AML code support. This
6229 will execute module-level code that is not at the root of the namespace
6230 (under a Device object, etc.) at table load time. Module-level executable
6232 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6234 Implemented a new internal function to create Integer objects. This
6236 simplifies miscellaneous object creation code. ACPICA BZ 823.
6238 Reduced the severity of predefined repair messages, Warning to Info.
6240 the object was successfully repaired, a warning is too severe. Reduced to
6242 info message for now. These messages may eventually be changed to debug-
6246 Example Code and Data Size: These are the sizes for the OS-independent
6247 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6248 debug version of the code includes the debug output trace mechanism and
6250 much larger code and data size.
6253 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6254 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6256 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6257 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6259 2) iASL Compiler/Disassembler and Tools:
6261 iASL: Implemented Switch() with While(1) so that Break works correctly.
6263 change correctly implements the Switch operator with a surrounding
6265 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
6267 iASL: Added a message if a package initializer list is shorter than
6269 length. Adds a new remark for a Package() declaration if an initializer
6271 exists, but is shorter than the declared length of the package. Although
6272 technically legal, this is probably a coding error and it is seen in the
6273 field. ACPICA BZ 815. Lin Ming, Bob Moore.
6275 iASL: Fixed a problem where the compiler could fault after the maximum
6277 of errors was reached (200).
6279 acpixtract: Fixed a possible warning for pointer cast if the compiler
6281 level set very high.
6283 ----------------------------------------
6284 13 October 2009. Summary of changes for version 20091013:
6286 1) ACPI CA Core Subsystem:
6288 Fixed a problem where an Operation Region _REG method could be executed
6290 than once. If a custom address space handler is installed by the host
6292 the "initialize operation regions" phase of the ACPICA initialization,
6294 _REG methods for that address space could be executed twice. This change
6295 fixes the problem. ACPICA BZ 427. Lin Ming.
6297 Fixed a possible memory leak for the Scope() ASL operator. When the exact
6298 invocation of "Scope(\)" is executed (change scope to root), one internal
6299 operand object was leaked. Lin Ming.
6301 Implemented a run-time repair for the _MAT predefined method. If the _MAT
6302 return value is defined as a Field object in the AML, and the field
6303 size is less than or equal to the default width of an integer (32 or
6305 can incorrectly return an Integer instead of a Buffer. ACPICA now
6306 automatically repairs this problem. ACPICA BZ 810.
6308 Implemented a run-time repair for the _BIF and _BIX predefined methods.
6310 "OEM Information" field is often incorrectly returned as an Integer with
6311 value zero if the field is not supported by the platform. This is due to
6313 ambiguity in the ACPI specification. The field should always be a string.
6314 ACPICA now automatically repairs this problem by returning a NULL string
6315 within the returned Package. ACPICA BZ 807.
6317 Example Code and Data Size: These are the sizes for the OS-independent
6318 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6319 debug version of the code includes the debug output trace mechanism and
6321 much larger code and data size.
6324 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6325 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6327 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6328 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6330 2) iASL Compiler/Disassembler and Tools:
6332 Disassembler: Fixed a problem where references to external symbols that
6333 contained one or more parent-prefixes (carats) were not handled
6335 possibly causing a fault. ACPICA BZ 806. Lin Ming.
6337 Disassembler: Restructured the code so that all functions that handle
6338 external symbols are in a single module. One new file is added,
6341 AML Debugger: Added a max count argument for the Batch command (which
6342 executes multiple predefined methods within the namespace.)
6344 iASL: Updated the compiler documentation (User Reference.) Available at
6345 http://www.acpica.org/documentation/. ACPICA BZ 750.
6347 AcpiXtract: Updated for Lint and other formatting changes. Close all open
6350 ----------------------------------------
6351 03 September 2009. Summary of changes for version 20090903:
6353 1) ACPI CA Core Subsystem:
6355 For Windows Vista compatibility, added the automatic execution of an _INI
6356 method located at the namespace root (\_INI). This method is executed at
6357 table load time. This support is in addition to the automatic execution
6359 \_SB._INI. Lin Ming.
6361 Fixed a possible memory leak in the interpreter for AML package objects
6363 the package initializer list is longer than the defined size of the
6365 This apparently can only happen if the BIOS changes the package size on
6367 fly (seen in a _PSS object), as ASL compilers do not allow this. The
6368 interpreter will truncate the package to the defined size (and issue an
6370 message), but previously could leave the extra objects undeleted if they
6372 pre-created during the argument processing (such is the case if the
6374 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
6376 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
6377 This has been reported in the field. Previously, ACPICA would zero out
6379 buffer/string. Now, the operation is treated as a noop. Provides Windows
6380 compatibility. ACPICA BZ 803. Lin Ming.
6382 Removed an extraneous error message for ASL constructs of the form
6383 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
6385 are seen in many BIOSs and are once again treated as NOOPs and no error
6387 emitted when they are encountered. ACPICA BZ 785.
6389 Fixed an extraneous warning message if a _DSM reserved method returns a
6390 Package object. _DSM can return any type of object, so validation on the
6391 return type cannot be performed. ACPICA BZ 802.
6393 Example Code and Data Size: These are the sizes for the OS-independent
6394 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6395 debug version of the code includes the debug output trace mechanism and
6397 much larger code and data size.
6400 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6401 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6403 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6404 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6406 2) iASL Compiler/Disassembler and Tools:
6408 iASL: Fixed a problem with the use of the Alias operator and Resource
6409 Templates. The correct alias is now constructed and no error is emitted.
6412 iASL: Implemented the -I option to specify additional search directories
6414 include files. Allows multiple additional search paths for include files.
6415 Directories are searched in the order specified on the command line
6417 the local directory is searched.) ACPICA BZ 800.
6419 iASL: Fixed a problem where the full pathname for include files was not
6420 emitted for warnings/errors. This caused the IDE support to not work
6421 properly. ACPICA BZ 765.
6423 iASL: Implemented the -@ option to specify a Windows-style response file
6424 containing additional command line options. ACPICA BZ 801.
6426 AcpiExec: Added support to load multiple AML files simultaneously (such
6429 DSDT and multiple SSDTs). Also added support for wildcards within the AML
6430 pathname. These features allow all machine tables to be easily loaded and
6431 debugged together. ACPICA BZ 804.
6433 Disassembler: Added missing support for disassembly of HEST table Error
6437 ----------------------------------------
6438 30 July 2009. Summary of changes for version 20090730:
6440 The ACPI 4.0 implementation for ACPICA is complete with this release.
6442 1) ACPI CA Core Subsystem:
6444 ACPI 4.0: Added header file support for all new and changed ACPI tables.
6445 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
6447 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
6449 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
6451 have been some ACPI 4.0 changes to other existing tables. Split the large
6452 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
6454 ACPI 4.0: Implemented predefined name validation for all new names. There
6456 31 new names in ACPI 4.0. The predefined validation module was split into
6458 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
6460 Implemented support for so-called "module-level executable code". This is
6461 executable AML code that exists outside of any control method and is
6463 to be executed at table load time. Although illegal since ACPI 2.0, this
6465 of code still exists and is apparently still being created. Blocks of
6467 code are now detected and executed as intended. Currently, the code
6469 must exist under either an If, Else, or While construct; these are the
6470 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
6472 Implemented an automatic dynamic repair for predefined names that return
6473 nested Package objects. This applies to predefined names that are defined
6475 return a variable-length Package of sub-packages. If the number of sub-
6476 packages is one, BIOS code is occasionally seen that creates a simple
6478 package with no sub-packages. This code attempts to fix the problem by
6479 wrapping a new package object around the existing package. These methods
6481 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
6485 Fixed a regression introduced in 20090625 for the AcpiGetDevices
6487 The _HID/_CID matching was broken and no longer matched IDs correctly.
6491 Fixed a problem with AcpiReset where the reset would silently fail if the
6492 register was one of the protected I/O ports. AcpiReset now bypasses the
6494 validation mechanism. This may eventually be driven into the
6498 Fixed a regression related to the recent update of the AcpiRead/Write
6499 interfaces. A sleep/suspend could fail if the optional PM2 Control
6501 does not exist during an attempt to write the Bus Master Arbitration bit.
6502 (However, some hosts already delete the code that writes this bit, and
6504 code may in fact be obsolete at this date.) ACPICA BZ 799.
6506 Fixed a problem where AcpiTerminate could fault if inadvertently called
6508 in succession. ACPICA BZ 795.
6510 Example Code and Data Size: These are the sizes for the OS-independent
6511 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6512 debug version of the code includes the debug output trace mechanism and
6514 much larger code and data size.
6517 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6518 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6520 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6521 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6523 2) iASL Compiler/Disassembler and Tools:
6525 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
6526 changes to existing tables. ACPICA BZ 775.
6528 ----------------------------------------
6529 25 June 2009. Summary of changes for version 20090625:
6531 The ACPI 4.0 Specification was released on June 16 and is available at
6532 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
6533 continue for the next few releases.
6535 1) ACPI CA Core Subsystem:
6537 ACPI 4.0: Implemented interpreter support for the IPMI operation region
6538 address space. Includes support for bi-directional data buffers and an
6540 address space handler (to be installed by an IPMI device driver.) ACPICA
6544 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
6546 support in both the header files and the disassembler.
6548 Completed a major update for the AcpiGetObjectInfo external interface.
6550 - Support for variable, unlimited length HID, UID, and CID strings.
6551 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
6553 - Call the _SxW power methods on behalf of a device object.
6554 - Determine if a device is a PCI root bridge.
6555 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
6556 These changes will require an update to all callers of this interface.
6558 the updated ACPICA Programmer Reference for details. One new source file
6560 been added - utilities/utids.c. ACPICA BZ 368, 780.
6562 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
6563 transfers. The Value parameter has been extended from 32 bits to 64 bits
6565 order to support new ACPI 4.0 tables. These changes will require an
6568 all callers of these interfaces. See the ACPICA Programmer Reference for
6569 details. ACPICA BZ 768.
6571 Fixed several problems with AcpiAttachData. The handler was not invoked
6573 the host node was deleted. The data sub-object was not automatically
6575 when the host node was deleted. The interface to the handler had an
6577 parameter, this was removed. ACPICA BZ 778.
6579 Enhanced the function that dumps ACPI table headers. All non-printable
6580 characters in the string fields are now replaced with '?' (Signature,
6582 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
6583 these fields are occasionally seen in the field. ACPICA BZ 788.
6585 Fixed a problem with predefined method repair code where the code that
6586 attempts to repair/convert an object of incorrect type is only executed
6588 the first time the predefined method is called. The mechanism that
6590 warnings on subsequent calls was interfering with the repair mechanism.
6593 Fixed a possible memory leak in the predefined validation/repair code
6596 buffer is automatically converted to an expected string object.
6598 Removed obsolete 16-bit files from the distribution and from the current
6600 tree head. ACPICA BZ 776.
6602 Example Code and Data Size: These are the sizes for the OS-independent
6603 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6604 debug version of the code includes the debug output trace mechanism and
6606 much larger code and data size.
6609 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6610 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6612 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6613 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6615 2) iASL Compiler/Disassembler and Tools:
6617 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
6618 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
6620 ACPI 4.0: iASL - implemented compile-time validation support for all new
6621 predefined names and control methods (31 total). ACPICA BZ 769.
6623 ----------------------------------------
6624 21 May 2009. Summary of changes for version 20090521:
6626 1) ACPI CA Core Subsystem:
6628 Disabled the preservation of the SCI enable bit in the PM1 control
6630 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
6633 a "preserved" bit - "OSPM always preserves this bit position", section
6634 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
6635 because the bit needs to be explicitly set by the OS as a workaround. No
6636 machines fail if the bit is not preserved. Therefore, ACPICA no longer
6637 attempts to preserve this bit.
6639 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
6640 incorrectly formed _PRT package could cause a fault. Added validation to
6641 ensure that each package element is actually a sub-package.
6643 Implemented a new interface to install or override a single control
6645 AcpiInstallMethod. This interface is useful when debugging in order to
6647 an existing method or to install a missing method without having to
6649 the entire ACPI table. See the ACPICA Programmer Reference for use and
6650 examples. Lin Ming, Bob Moore.
6652 Fixed several reference count issues with the DdbHandle object that is
6653 created from a Load or LoadTable operator. Prevent premature deletion of
6655 object. Also, mark the object as invalid once the table has been
6657 This is needed because the handle itself may not be deleted after the
6659 unload, depending on whether it has been stored in a named object by the
6662 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
6663 mutexes of the same sync level are acquired but then not released in
6665 opposite order, the internally maintained Current Sync Level becomes
6667 and can cause subsequent execution errors. ACPICA BZ 471.
6669 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
6670 specification has been changed to make the SyncLevel for mutex objects
6672 useful. When releasing a mutex, the SyncLevel of the mutex must now be
6674 same as the current sync level. This makes more sense than the previous
6676 (SyncLevel less than or equal). This change updates the code to match the
6679 Fixed a problem with the local version of the AcpiOsPurgeCache function.
6681 (local) cache must be locked during all cache object deletions. Andrew
6684 Updated the Load operator to use operation region interfaces. This
6686 direct memory mapping with region access calls. Now, all region accesses
6688 through the installed region handler as they should.
6690 Simplified and optimized the NsGetNextNode function. Reduced parameter
6692 and reduced code for this frequently used function.
6694 Example Code and Data Size: These are the sizes for the OS-independent
6695 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6696 debug version of the code includes the debug output trace mechanism and
6698 much larger code and data size.
6701 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6702 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6704 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6705 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6707 2) iASL Compiler/Disassembler and Tools:
6709 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
6711 with sub-table disassembly and handling invalid sub-tables. Attempt
6713 after an invalid sub-table ID.
6715 ----------------------------------------
6716 22 April 2009. Summary of changes for version 20090422:
6718 1) ACPI CA Core Subsystem:
6720 Fixed a compatibility issue with the recently released I/O port
6722 mechanism. For windows compatibility, 1) On a port protection violation,
6723 simply ignore the request and do not return an exception (allow the
6725 method to continue execution.) 2) If only part of the request overlaps a
6726 protected port, read/write the individual ports that are not protected.
6730 Enhanced the execution of the ASL/AML BreakPoint operator so that it
6732 breaks into the AML debugger if the debugger is present. This matches the
6733 ACPI-defined behavior.
6735 Fixed several possible warnings related to the use of the configurable
6736 ACPI_THREAD_ID. This type can now be configured as either an integer or a
6737 pointer with no warnings. Also fixes several warnings in printf-like
6738 statements for the 64-bit build when the type is configured as a pointer.
6741 Fixed a number of possible warnings when compiling with gcc 4+ (depending
6743 warning options.) Examples include printf formats, aliasing, unused
6745 missing prototypes, missing switch default statements, use of non-ANSI
6746 library functions, use of non-ANSI constructs. See generate/unix/Makefile
6748 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
6750 Example Code and Data Size: These are the sizes for the OS-independent
6751 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6752 debug version of the code includes the debug output trace mechanism and
6754 much larger code and data size.
6757 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6758 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6760 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6761 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6763 2) iASL Compiler/Disassembler and Tools:
6765 iASL: Fixed a generation warning from Bison 2.3 and fixed several
6770 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
6772 correctly digest Windows/DOS formatted files (with CR/LF).
6774 iASL: Added a new option for "quiet mode" (-va) that produces only the
6775 compilation summary, not individual errors and warnings. Useful for large
6778 AcpiExec: Implemented a new option (-z) to enable a forced
6780 timeout that can be used to detect hang conditions during execution of
6782 code (includes both internal semaphores and AML-defined mutexes and
6785 Added new makefiles for the generation of acpica in a generic unix-like
6786 environment. These makefiles are intended to generate the acpica tools
6788 utilities from the original acpica git source tree structure.
6790 Test Suites: Updated and cleaned up the documentation files. Updated the
6791 copyrights to 2009, affecting all source files. Use the new version of
6793 with quiet mode. Increased the number of available semaphores in the
6795 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
6797 an alternate implementation of the semaphore timeout to allow aslts to
6798 execute fully on Cygwin.
6800 ----------------------------------------
6801 20 March 2009. Summary of changes for version 20090320:
6803 1) ACPI CA Core Subsystem:
6805 Fixed a possible race condition between AcpiWalkNamespace and dynamic
6807 unloads. Added a reader/writer locking mechanism to allow multiple
6809 namespace walks (readers), but block a dynamic table unload until it can
6811 exclusive write access to the namespace. This fixes a problem where a
6813 unload could (possibly catastrophically) delete the portion of the
6815 that is currently being examined by a walk. Adds a new file, utlock.c,
6817 implements the reader/writer lock mechanism. ACPICA BZ 749.
6819 Fixed a regression introduced in version 20090220 where a change to the
6821 handling could cause the ACPICA subsystem to access non-existent I/O
6824 Modified the handling of FADT register and table (FACS/DSDT) addresses.
6826 FADT can contain both 32-bit and 64-bit versions of these addresses.
6827 Previously, the 64-bit versions were favored, meaning that if both 32 and
6829 versions were valid, but not equal, the 64-bit version was used. This was
6830 found to cause some machines to fail. Now, in this case, the 32-bit
6832 is used instead. This now matches the Windows behavior.
6834 Implemented a new mechanism to protect certain I/O ports. Provides
6836 compatibility and protects the standard PC I/O ports from access via AML
6837 code. Adds a new file, hwvalid.c
6839 Fixed a possible extraneous warning message from the FADT support. The
6840 message warns of a 32/64 length mismatch between the legacy and GAS
6841 definitions for a register.
6843 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
6845 made obsolete by the port protection mechanism above. It was previously
6847 to validate the entire address range of an operation region, which could
6849 incorrect if the range included illegal ports, but fields within the
6850 operation region did not actually access those ports. Validation is now
6851 performed on a per-field basis instead of the entire region.
6853 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
6854 Ignored bits must be "preserved" according to the ACPI spec. Usually,
6856 means a read/modify/write when writing to the register. However, for
6858 registers, writing a one means clear the event. Writing a zero means
6860 the event (do not clear.) This behavior is clarified in the ACPI 4.0
6862 and the ACPICA code now simply always writes a zero to the ignored bit.
6864 Modified the handling of ignored bits for the PM1 A/B Control Registers.
6866 per the ACPI specification, for the control registers, preserve
6867 (read/modify/write) all bits that are defined as either reserved or
6870 Updated the handling of write-only bits in the PM1 A/B Control Registers.
6871 When reading the register, zero the write-only bits as per the ACPI spec.
6872 ACPICA BZ 443. Lin Ming.
6874 Removed "Linux" from the list of supported _OSI strings. Linux no longer
6875 wants to reply true to this request. The Windows strings are the only
6877 through the AML that are tested and known to work properly.
6880 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6881 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6883 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6884 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6886 2) iASL Compiler/Disassembler and Tools:
6888 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
6892 ----------------------------------------
6893 20 February 2009. Summary of changes for version 20090220:
6895 1) ACPI CA Core Subsystem:
6897 Optimized the ACPI register locking. Removed locking for reads from the
6899 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
6901 not required when reading the single-bit registers. The
6902 AcpiGetRegisterUnlocked function is no longer needed and has been
6904 This will improve performance for reads on these registers. ACPICA BZ
6907 Fixed the parameter validation for AcpiRead/Write. Now return
6908 AE_BAD_PARAMETER if the input register pointer is null, and
6911 the register has an address of zero. Previously, these cases simply
6913 AE_OK. For optional registers such as PM1B status/enable/control, the
6915 should check for a valid register address before calling. ACPICA BZ 748.
6917 Renamed the external ACPI bit register access functions. Renamed
6918 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
6919 functions. The new names are AcpiReadBitRegister and
6920 AcpiWriteBitRegister.
6921 Also, restructured the code for these functions by simplifying the code
6923 and condensing duplicate code to reduce code size.
6925 Added new functions to transparently handle the possibly split PM1 A/B
6926 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
6928 now handle the split registers for PM1 Status, Enable, and Control.
6933 Added a function to handle the PM1 control registers,
6934 AcpiHwWritePm1Control.
6935 This function writes both of the PM1 control registers (A/B). These
6937 are different than the PM1 A/B status and enable registers in that
6939 values can be written to the A/B registers. Most notably, the SLP_TYP
6941 can be different, as per the values returned from the _Sx predefined
6944 Removed an extra register write within AcpiHwClearAcpiStatus. This
6946 was writing an optional PM1B status register twice. The existing call to
6948 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
6950 register. ACPICA BZ 751.
6952 Split out the PM1 Status registers from the FADT. Added new globals for
6954 registers (A/B), similar to the way the PM1 Enable registers are handled.
6955 Instead of overloading the FADT Event Register blocks. This makes the
6957 clearer and less prone to error.
6959 Fixed the warning message for when the platform contains too many ACPI
6961 for the default size of the global root table data structure. The
6963 for the truncation value was incorrect.
6965 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
6966 obsolete macro, since it is now a simple reference to ->common.type.
6968 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
6970 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
6971 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
6972 simply SLEEP_TYPE. ACPICA BZ 754.
6974 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
6975 function is only needed on 64-bit host operating systems and is thus not
6976 included for 32-bit hosts.
6978 Debug output: print the input and result for invocations of the _OSI
6980 control method via the ACPI_LV_INFO debug level. Also, reduced some of
6982 verbosity of this debug level. Len Brown.
6984 Example Code and Data Size: These are the sizes for the OS-independent
6985 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6986 debug version of the code includes the debug output trace mechanism and
6988 much larger code and data size.
6991 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6992 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6994 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6995 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6997 2) iASL Compiler/Disassembler and Tools:
6999 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7000 various legal performance profiles.
7002 ----------------------------------------
7003 23 January 2009. Summary of changes for version 20090123:
7005 1) ACPI CA Core Subsystem:
7007 Added the 2009 copyright to all module headers and signons. This affects
7008 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7009 the tools/utilities.
7011 Implemented a change to allow the host to override any ACPI table,
7013 dynamically loaded tables. Previously, only the DSDT could be replaced by
7015 host. With this change, the AcpiOsTableOverride interface is called for
7017 table found in the RSDT/XSDT during ACPICA initialization, and also
7019 a table is dynamically loaded via the AML Load operator.
7021 Updated FADT flag definitions, especially the Boot Architecture flags.
7023 Debugger: For the Find command, automatically pad the input ACPI name
7025 underscores if the name is shorter than 4 characters. This enables a
7027 with the actual namespace entry which is itself padded with underscores.
7029 Example Code and Data Size: These are the sizes for the OS-independent
7030 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7031 debug version of the code includes the debug output trace mechanism and
7033 much larger code and data size.
7036 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7037 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7039 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7040 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7042 2) iASL Compiler/Disassembler and Tools:
7044 Fix build error under Bison-2.4.
7046 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7048 flags. Now decode all flags, regardless of the FADT version. Flag output
7049 includes the FADT version which first defined each flag.
7051 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7053 DSDT). Windows only.
7055 ----------------------------------------
7056 04 December 2008. Summary of changes for version 20081204:
7058 1) ACPI CA Core Subsystem:
7060 The ACPICA Programmer Reference has been completely updated and revamped
7062 this release. This includes updates to the external interfaces, OSL
7063 interfaces, the overview sections, and the debugger reference.
7065 Several new ACPICA interfaces have been implemented and documented in the
7066 programmer reference:
7067 AcpiReset - Writes the reset value to the FADT-defined reset register.
7068 AcpiDisableAllGpes - Disable all available GPEs.
7069 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7070 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7071 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7072 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7073 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7075 Most of the public ACPI hardware-related interfaces have been moved to a
7077 file, components/hardware/hwxface.c
7079 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7080 register lengths within the FADT are now used, and the low level ACPI
7081 register access no longer hardcodes the ACPI register lengths. Given that
7082 there may be some risk in actually trusting the FADT register lengths, a
7084 time option was added to fall back to the default hardcoded lengths if
7086 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7087 option is set to true for now, and a warning is issued if a suspicious
7089 register length is overridden with the default value.
7091 Fixed a reference count issue in NsRepairObject. This problem was
7093 in version 20081031 as part of a fix to repair Buffer objects within
7096 Added semaphore support to the Linux/Unix application OS-services layer
7097 (OSL). ACPICA BZ 448. Lin Ming.
7099 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7101 be implemented in the OSL, or will binary semaphores be used instead.
7103 Example Code and Data Size: These are the sizes for the OS-independent
7104 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7105 debug version of the code includes the debug output trace mechanism and
7107 much larger code and data size.
7110 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7111 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7113 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7114 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7116 2) iASL Compiler/Disassembler and Tools:
7118 iASL: Completed the '-e' option to include additional ACPI tables in
7121 aid with disassembly and External statement generation. ACPICA BZ 742.
7125 iASL: Removed the "named object in while loop" error. The compiler cannot
7126 determine how many times a loop will execute. ACPICA BZ 730.
7128 Disassembler: Implemented support for FADT revision 2 (MS extension).
7132 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7135 ----------------------------------------
7136 31 October 2008. Summary of changes for version 20081031:
7138 1) ACPI CA Core Subsystem:
7140 Restructured the ACPICA header files into public/private. acpi.h now
7142 only the "public" acpica headers. All other acpica headers are "private"
7144 should not be included by acpica users. One new file, accommon.h is used
7146 include the commonly used private headers for acpica code generation.
7148 plans include moving all private headers to a new subdirectory.
7150 Implemented an automatic Buffer->String return value conversion for
7151 predefined ACPI methods. For these methods (such as _BIF), added
7153 conversion for return objects that are required to be a String, but a
7155 was found instead. This can happen when reading string battery data from
7157 operation region, because it used to be difficult to convert the data
7159 buffer to string from within the ASL. Ensures that the host OS is
7161 with a valid null-terminated string. Linux BZ 11822.
7163 Updated the FACS waking vector interfaces. Split
7164 AcpiSetFirmwareWakingVector
7165 into two: one for the 32-bit vector, another for the 64-bit vector. This
7167 required because the host OS must setup the wake much differently for
7169 vector (real vs. protected mode, etc.) and the interface itself should
7172 deciding which vector to use. Also, eliminated the
7173 GetFirmwareWakingVector
7174 interface, as it served no purpose (only the firmware reads the vector,
7176 only writes the vector.) ACPICA BZ 731.
7178 Implemented a mechanism to escape infinite AML While() loops. Added a
7180 counter to force exit from AML While loops if the count becomes too
7182 This can occur in poorly written AML when the hardware does not respond
7183 within a while loop and the loop does not implement a timeout. The
7185 loop count is configurable. A new exception code is returned when a loop
7187 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7189 Optimized the execution of AML While loops. Previously, a control state
7190 object was allocated and freed for each execution of the loop. The
7191 optimization is to simply reuse the control state for each iteration.
7193 speeds up the raw loop execution time by about 5%.
7195 Enhanced the implicit return mechanism. For Windows compatibility, return
7197 implicit integer of value zero for methods that contain no executable
7199 Such methods are seen in the field as stubs (presumably), and can cause
7200 drivers to fail if they expect a return value. Lin Ming.
7202 Allow multiple backslashes as root prefixes in namepaths. In a fully
7203 qualified namepath, allow multiple backslash prefixes. This can happen
7205 is seen in the field) because of the use of a double-backslash in strings
7206 (since backslash is the escape character) causing confusion. ACPICA BZ
7210 Emit a warning if two different FACS or DSDT tables are discovered in the
7211 FADT. Checks if there are two valid but different addresses for the FACS
7213 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7215 Consolidated the method argument count validation code. Merged the code
7217 validates control method argument counts into the predefined validation
7218 module. Eliminates possible multiple warnings for incorrect argument
7221 Implemented ACPICA example code. Includes code for ACPICA initialization,
7222 handler installation, and calling a control method. Available at
7223 source/tools/examples.
7225 Added a global pointer for FACS table to simplify internal FACS access.
7227 the global pointer instead of using AcpiGetTableByIndex for each FACS
7229 This simplifies the code for the Global Lock and the Firmware Waking
7232 Example Code and Data Size: These are the sizes for the OS-independent
7233 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7234 debug version of the code includes the debug output trace mechanism and
7236 much larger code and data size.
7239 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7240 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7242 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7243 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7245 2) iASL Compiler/Disassembler and Tools:
7247 iASL: Improved disassembly of external method calls. Added the -e option
7249 allow the inclusion of additional ACPI tables to help with the
7252 method invocations and the generation of external declarations during the
7253 disassembly. Certain external method invocations cannot be disassembled
7254 properly without the actual declaration of the method. Use the -e option
7256 include the table where the external method(s) are actually declared.
7258 useful for disassembling SSDTs that make method calls back to the master
7259 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
7261 -e dsdt.aml ssdt1.aml
7263 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
7264 problem where the use of an alias within a namepath would result in a not
7265 found error or cause the compiler to fault. Also now allows forward
7266 references from the Alias operator itself. ACPICA BZ 738.
7268 ----------------------------------------
7269 26 September 2008. Summary of changes for version 20080926:
7271 1) ACPI CA Core Subsystem:
7273 Designed and implemented a mechanism to validate predefined ACPI methods
7275 objects. This code validates the predefined ACPI objects (objects whose
7277 start with underscore) that appear in the namespace, at the time they are
7278 evaluated. The argument count and the type of the returned object are
7279 validated against the ACPI specification. The purpose of this validation
7281 to detect problems with the BIOS-implemented predefined ACPI objects
7283 the results are returned to the ACPI-related drivers. Future enhancements
7285 include actual repair of incorrect return objects where possible. Two new
7286 files are nspredef.c and acpredef.h.
7288 Fixed a fault in the AML parser if a memory allocation fails during the
7290 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
7292 Fixed an issue with implicit return compatibility. This change improves
7294 implicit return mechanism to be more compatible with the MS interpreter.
7296 Ming, ACPICA BZ 349.
7298 Implemented support for zero-length buffer-to-string conversions. Allow
7300 length strings during interpreter buffer-to-string conversions. For
7302 during the ToDecimalString and ToHexString operators, as well as implicit
7303 conversions. Fiodor Suietov, ACPICA BZ 585.
7305 Fixed two possible memory leaks in the error exit paths of
7306 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
7308 similar in that they use a stack of state objects in order to eliminate
7309 recursion. The stack must be fully unwound and deallocated if an error
7310 occurs. Lin Ming. ACPICA BZ 383.
7312 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
7314 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
7315 Moore ACPICA BZ 442.
7317 Removed the obsolete version number in module headers. Removed the
7318 "$Revision" number that appeared in each module header. This version
7320 was useful under SourceSafe and CVS, but has no meaning under git. It is
7322 only incorrect, it could also be misleading.
7324 Example Code and Data Size: These are the sizes for the OS-independent
7325 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7326 debug version of the code includes the debug output trace mechanism and
7328 much larger code and data size.
7331 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7332 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7334 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7335 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7337 ----------------------------------------
7338 29 August 2008. Summary of changes for version 20080829:
7340 1) ACPI CA Core Subsystem:
7342 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
7343 Reference. Changes include the elimination of cheating on the Object
7345 for the DdbHandle subtype, addition of a reference class field to
7346 differentiate the various reference types (instead of an AML opcode), and
7348 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
7350 Reduce an error to a warning for an incorrect method argument count.
7351 Previously aborted with an error if too few arguments were passed to a
7352 control method via the external ACPICA interface. Now issue a warning
7354 and continue. Handles the case where the method inadvertently declares
7356 many arguments, but does not actually use the extra ones. Applies mainly
7358 the predefined methods. Lin Ming. Linux BZ 11032.
7360 Disallow the evaluation of named object types with no intrinsic value.
7362 AE_TYPE for objects that have no value and therefore evaluation is
7364 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
7366 these types were allowed, but an exception would be generated at some
7368 during the evaluation. Now, the error is generated up front.
7370 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
7371 (nsnames.c). Fixes a leak in the error exit path.
7373 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
7375 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
7377 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
7380 Removed obsolete and/or unused exception codes from the acexcep.h header.
7381 There is the possibility that certain device drivers may be affected if
7383 use any of these exceptions.
7385 The ACPICA documentation has been added to the public git source tree,
7387 acpica/documents. Included are the ACPICA programmer reference, the iASL
7388 compiler reference, and the changes.txt release logfile.
7390 Example Code and Data Size: These are the sizes for the OS-independent
7391 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7392 debug version of the code includes the debug output trace mechanism and
7394 much larger code and data size.
7397 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7398 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7400 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7401 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7403 2) iASL Compiler/Disassembler and Tools:
7405 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
7406 defines _SCP with 3 arguments. Previous versions defined it with only 1
7407 argument. iASL now allows both definitions.
7409 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
7411 length subtables when disassembling ACPI tables. Also fixed a couple of
7412 errors where a full 16-bit table type field was not extracted from the
7416 acpisrc: Improve comment counting mechanism for generating source code
7417 statistics. Count first and last lines of multi-line comments as
7419 not comment lines. Handle Linux legal header in addition to standard
7423 ----------------------------------------
7425 29 July 2008. Summary of changes for version 20080729:
7427 1) ACPI CA Core Subsystem:
7429 Fix a possible deadlock in the GPE dispatch. Remove call to
7430 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
7432 to acquire the GPE lock but can deadlock since the GPE lock is already
7434 at dispatch time. This code was introduced in version 20060831 as a
7436 to Linux BZ 6881 and has since been removed from Linux.
7438 Add a function to dereference returned reference objects. Examines the
7440 object from a call to AcpiEvaluateObject. Any Index or RefOf references
7442 automatically dereferenced in an attempt to return something useful
7444 reference types cannot be converted into an external ACPI_OBJECT.)
7446 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
7448 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
7449 subtables for the MADT and one new subtable for the SRAT. Includes
7450 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
7452 Specification, June 2008.
7454 Additional error checking for pathname utilities. Add error check after
7456 calls to AcpiNsGetPathnameLength. Add status return from
7457 AcpiNsBuildExternalPath and check after all calls. Add parameter
7459 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
7461 Return status from the global init function AcpiUtGlobalInitialize. This
7463 used by both the kernel subsystem and the utilities such as iASL
7465 The function could possibly fail when the caches are initialized. Yang
7468 Add a function to decode reference object types to strings. Created for
7469 improved error messages.
7471 Improve object conversion error messages. Better error messages during
7473 conversion from internal to the external ACPI_OBJECT. Used for external
7475 to AcpiEvaluateObject.
7477 Example Code and Data Size: These are the sizes for the OS-independent
7478 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7479 debug version of the code includes the debug output trace mechanism and
7481 much larger code and data size.
7484 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7485 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7487 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7488 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7490 2) iASL Compiler/Disassembler and Tools:
7492 Debugger: fix a possible hang when evaluating non-methods. Fixes a
7494 introduced in version 20080701. If the object being evaluated (via
7496 command) is not a method, the debugger can hang while trying to obtain
7498 existent parameters.
7500 iASL: relax error for using reserved "_T_x" identifiers. These names can
7501 appear in a disassembled ASL file if they were emitted by the original
7502 compiler. Instead of issuing an error or warning and forcing the user to
7503 manually change these names, issue a remark instead.
7505 iASL: error if named object created in while loop. Emit an error if any
7507 object is created within a While loop. If allowed, this code will
7510 run-time error on the second iteration of the loop when an attempt is
7513 create the same named object twice. ACPICA bugzilla 730.
7515 iASL: Support absolute pathnames for include files. Add support for
7517 pathnames within the Include operator. previously, only relative
7521 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
7523 The ACPI spec requires one interrupt minimum. BZ 423
7525 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
7526 Handles the case for the Interrupt Resource Descriptor where
7527 the ResourceSource argument is omitted but ResourceSourceIndex
7528 is present. Now leave room for the Index. BZ 426
7530 iASL: Prevent error message if CondRefOf target does not exist. Fixes
7532 where an error message is emitted if the target does not exist. BZ 516
7534 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
7535 (get ACPI tables on Windows). This was apparently broken in version
7538 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
7540 the EOF happens immediately after the last table in the input file. Print
7541 completion message. Previously, no message was displayed in this case.
7543 ----------------------------------------
7544 01 July 2008. Summary of changes for version 20080701:
7546 0) Git source tree / acpica.org
7548 Fixed a problem where a git-clone from http would not transfer the entire
7551 1) ACPI CA Core Subsystem:
7553 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
7554 enable bit. Now performs a read-change-write of the enable register
7556 of simply writing out the cached enable mask. This will prevent
7558 enabling of GPEs if a rogue GPE is received during initialization (before
7560 handlers are installed.)
7562 Implemented a copy for dynamically loaded tables. Previously, dynamically
7563 loaded tables were simply mapped - but on some machines this memory is
7564 corrupted after suspend. Now copy the table to a local buffer. For the
7565 OpRegion case, added checksum verify. Use the table length from the table
7566 header, not the region length. For the Buffer case, use the table length
7567 also. Dennis Noordsij, Bob Moore. BZ 10734
7569 Fixed a problem where the same ACPI table could not be dynamically loaded
7571 unloaded more than once. Without this change, a table cannot be loaded
7573 once it has been loaded/unloaded one time. The current mechanism does not
7574 unregister a table upon an unload. During a load, if the same table is
7576 this no longer returns an exception. BZ 722
7578 Fixed a problem where the wrong descriptor length was calculated for the
7579 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
7581 are calculated as 12 bytes long, but the actual length in the internal
7582 descriptor is 16 because of the round-up to 8 on the 64-bit build.
7584 by Linn Crosetto. BZ 728
7586 Fixed a possible memory leak in the Unload operator. The DdbHandle
7588 by Load() did not have its reference count decremented during unload,
7590 to a memory leak. Lin Ming. BZ 727
7592 Fixed a possible memory leak when deleting thermal/processor objects. Any
7593 associated notify handlers (and objects) were not being deleted. Fiodor
7596 Fixed the ordering of the ASCII names in the global mutex table to match
7598 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
7600 Vegard Nossum. BZ 726
7602 Enhanced the AcpiGetObjectInfo interface to return the number of required
7603 arguments if the object is a control method. Added this call to the
7605 so the proper number of default arguments are passed to a method. This
7606 prevents a warning when executing methods from AcpiExec.
7608 Added a check for an invalid handle in AcpiGetObjectInfo. Return
7609 AE_BAD_PARAMETER if input handle is invalid. BZ 474
7611 Fixed an extraneous warning from exconfig.c on the 64-bit build.
7613 Example Code and Data Size: These are the sizes for the OS-independent
7614 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7615 debug version of the code includes the debug output trace mechanism and
7617 much larger code and data size.
7620 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7621 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7623 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7624 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7626 2) iASL Compiler/Disassembler and Tools:
7628 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
7629 resource descriptor names.
7631 iASL: Detect invalid ASCII characters in input (windows version). Removed
7633 "-CF" flag from the flex compile, enables correct detection of non-ASCII
7634 characters in the input. BZ 441
7636 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
7638 "result of operation not used" warning when the DDB handle returned from
7639 LoadTable is not used. The warning is not needed. BZ 590
7641 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
7644 pass address of table to the AML. Added option to disable OpRegion
7646 to allow creation of an OpRegion with a real address that was passed to
7648 All of this allows testing of the Load and Unload operators from
7651 Debugger: update tables command for unloaded tables. Handle unloaded
7653 and use the standard table header output routine.
7655 ----------------------------------------
7656 09 June 2008. Summary of changes for version 20080609:
7658 1) ACPI CA Core Subsystem:
7660 Implemented a workaround for reversed _PRT entries. A significant number
7662 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
7663 change dynamically detects and repairs this problem. Provides
7665 with MS ACPI. BZ 6859
7667 Simplified the internal ACPI hardware interfaces to eliminate the locking
7668 flag parameter from Register Read/Write. Added a new external interface,
7669 AcpiGetRegisterUnlocked.
7671 Fixed a problem where the invocation of a GPE control method could hang.
7673 was a regression introduced in 20080514. The new method argument count
7674 validation mechanism can enter an infinite loop when a GPE method is
7675 dispatched. Problem fixed by removing the obsolete code that passed GPE
7677 information to the notify handler via the control method parameter
7680 Fixed a problem where the _SST execution status was incorrectly returned
7682 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
7684 20080514. _SST is optional and a NOT_FOUND exception should never be
7687 Fixed a problem where a deleted object could be accessed from within the
7689 parser. This was a regression introduced in version 20080123 as a fix for
7691 Unload operator. Lin Ming. BZ 10669
7693 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
7695 and eliminated the use of a negative index in a loop. Operands are now
7696 displayed in the correct order, not backwards. This also fixes a
7698 introduced in 20080514 on 64-bit systems where the elimination of
7699 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
7702 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
7704 path did not delete a locally allocated structure.
7706 Updated definitions for the DMAR and SRAT tables to synchronize with the
7707 current specifications. Includes disassembler support.
7709 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
7710 loop termination value was used. Loop terminated on iteration early,
7712 one mutex. Linn Crosetto
7714 Example Code and Data Size: These are the sizes for the OS-independent
7715 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7716 debug version of the code includes the debug output trace mechanism and
7718 much larger code and data size.
7721 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7722 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7724 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7725 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7727 2) iASL Compiler/Disassembler and Tools:
7729 Disassembler: Implemented support for EisaId() within _CID objects. Now
7730 disassemble integer _CID objects back to EisaId invocations, including
7731 multiple integers within _CID packages. Includes single-step support for
7734 Disassembler: Added support for DMAR and SRAT table definition changes.
7736 ----------------------------------------
7737 14 May 2008. Summary of changes for version 20080514:
7739 1) ACPI CA Core Subsystem:
7741 Fixed a problem where GPEs were enabled too early during the ACPICA
7742 initialization. This could lead to "handler not installed" errors on some
7743 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
7745 ensures that all operation regions and devices throughout the namespace
7747 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
7749 Implemented a change to the enter sleep code. Moved execution of the _GTS
7750 method to just before setting sleep enable bit. The execution was moved
7752 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
7753 immediately before the SLP_EN bit is set, as per the ACPI specification.
7756 Implemented a fix to disable unknown GPEs (2nd version). Now always
7758 the GPE, even if ACPICA thinks that that it is already disabled. It is
7759 possible that the AML or some other code has enabled the GPE unbeknownst
7763 Fixed a problem with the Field operator where zero-length fields would
7765 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
7767 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
7769 Implemented a fix for the Load operator, now load the table at the
7771 root. This reverts a change introduced in version 20071019. The table is
7773 loaded at the namespace root even though this goes against the ACPI
7774 specification. This provides compatibility with other ACPI
7776 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
7779 Fixed a problem where ACPICA would not Load() tables with unusual
7781 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
7782 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
7783 Therefore, signature validation is worthless. Apparently MS ACPI accepts
7785 signatures, ACPICA must be compatible. BZ 10454.
7787 Fixed a possible negative array index in AcpiUtValidateException. Added
7789 fields to the exception string arrays to eliminate a -1 subtraction on
7793 Updated the debug tracking macros to reduce overall code and data size.
7794 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
7795 instead of pointers to static strings. Jan Beulich and Bob Moore.
7797 Implemented argument count checking in control method invocation via
7798 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
7800 many. This applies only to extern programmatic control method execution,
7802 method-to-method calls within the AML. Lin Ming.
7804 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
7806 longer needed, especially with the removal of 16-bit support. It was
7808 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
7811 32/64-bit platforms is required.
7813 Added the C const qualifier for appropriate string constants -- mostly
7814 MODULE_NAME and printf format strings. Jan Beulich.
7816 Example Code and Data Size: These are the sizes for the OS-independent
7817 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7818 debug version of the code includes the debug output trace mechanism and
7820 much larger code and data size.
7823 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7824 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7826 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7827 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7829 2) iASL Compiler/Disassembler and Tools:
7831 Implemented ACPI table revision ID validation in the disassembler. Zero
7833 always invalid. For DSDTs, the ID controls the interpreter integer width.
7835 means 32-bit and this is unusual. 2 or greater is 64-bit.
7837 ----------------------------------------
7838 21 March 2008. Summary of changes for version 20080321:
7840 1) ACPI CA Core Subsystem:
7842 Implemented an additional change to the GPE support in order to suppress
7843 spurious or stray GPEs. The AcpiEvDisableGpe function will now
7845 disable incoming GPEs that are neither enabled nor disabled -- meaning
7847 the GPE is unknown to the system. This should prevent future interrupt
7849 from that GPE. BZ 6217 (Zhang Rui)
7851 Fixed a problem where NULL package elements were not returned to the
7852 AcpiEvaluateObject interface correctly. The element was simply ignored
7853 instead of returning a NULL ACPI_OBJECT package element, potentially
7855 a buffer overflow and/or confusing the caller who expected a fixed number
7857 elements. BZ 10132 (Lin Ming, Bob Moore)
7859 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
7861 Qword), Field, BankField, and IndexField operators when invoked from
7863 an executing control method. In this case, these operators created
7865 nodes that were incorrectly left marked as permanent nodes instead of
7866 temporary nodes. This could cause a problem if there is race condition
7867 between an exiting control method and a running namespace walk. (Reported
7871 Fixed a problem where the CreateField and CreateXXXField operators would
7872 incorrectly allow duplicate names (the name of the field) with no
7876 Implemented several changes for Notify handling. Added support for new
7878 values (ACPI 2.0+) and improved the Notify debug output. Notify on
7879 PowerResource objects is no longer allowed, as per the ACPI
7881 (Bob Moore, Zhang Rui)
7883 All Reference Objects returned via the AcpiEvaluateObject interface are
7885 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
7887 NULL objects - either NULL package elements or unresolved named
7890 Fixed a problem where an extraneous debug message was produced for
7892 objects (when debugging enabled). The message "Package List length larger
7893 than NumElements count" is now produced in the correct case, and is now
7895 error message rather than a debug message. Added a debug message for the
7896 opposite case, where NumElements is larger than the Package List (the
7898 will be padded out with NULL elements as per the ACPI spec.)
7900 Implemented several improvements for the output of the ASL "Debug" object
7902 clarify and keep all data for a given object on one output line.
7904 Fixed two size calculation issues with the variable-length Start
7906 resource descriptor.
7908 Example Code and Data Size: These are the sizes for the OS-independent
7909 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7910 debug version of the code includes the debug output trace mechanism and
7912 a much larger code and data size.
7915 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7916 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7918 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7919 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7921 2) iASL Compiler/Disassembler and Tools:
7923 Fixed a problem with the use of the Switch operator where execution of
7925 containing method by multiple concurrent threads could cause an
7926 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
7927 actual Switch opcode, it must be simulated with local named temporary
7928 variables and if/else pairs. The solution chosen was to mark any method
7930 uses Switch as Serialized, thus preventing multiple thread entries. BZ
7933 ----------------------------------------
7934 13 February 2008. Summary of changes for version 20080213:
7936 1) ACPI CA Core Subsystem:
7938 Implemented another MS compatibility design change for GPE/Notify
7940 GPEs are now cleared/enabled asynchronously to allow all pending notifies
7942 complete first. It is expected that the OSL will queue the enable request
7943 behind all pending notify requests (may require changes to the local host
7945 in AcpiOsExecute). Alexey Starikovskiy.
7947 Fixed a problem where buffer and package objects passed as arguments to a
7948 control method via the external AcpiEvaluateObject interface could cause
7950 AE_AML_INTERNAL exception depending on the order and type of operators
7951 executed by the target control method.
7953 Fixed a problem where resource descriptor size optimization could cause a
7954 problem when a _CRS resource template is passed to a _SRS method. The
7956 resource template must use the same descriptors (with the same size) as
7957 returned from _CRS. This change affects the following resource
7959 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
7962 Fixed a problem where a CopyObject to RegionField, BankField, and
7964 objects did not perform an implicit conversion as it should. These types
7966 retain their initial type permanently as per the ACPI specification.
7968 a CopyObject to all other object types should not perform an implicit
7969 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
7971 Fixed a problem with the AcpiGetDevices interface where the mechanism to
7972 match device CIDs did not examine the entire list of available CIDs, but
7973 instead aborted on the first non-matching CID. Andrew Patterson.
7975 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
7977 inadvertently changed to return a 16-bit value instead of a 32-bit value,
7978 truncating the upper dword of a 64-bit value. This macro is only used to
7979 display debug output, so no incorrect calculations were made. Also,
7980 reimplemented the macro so that a 64-bit shift is not performed by
7981 inefficient compilers.
7983 Added missing va_end statements that should correspond with each va_start
7986 Example Code and Data Size: These are the sizes for the OS-independent
7987 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7988 debug version of the code includes the debug output trace mechanism and
7990 a much larger code and data size.
7993 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7994 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7996 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7997 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7999 2) iASL Compiler/Disassembler and Tools:
8001 Implemented full disassembler support for the following new ACPI tables:
8002 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8003 complicated HEST table. These tables support the Windows Hardware Error
8004 Architecture (WHEA).
8006 ----------------------------------------
8007 23 January 2008. Summary of changes for version 20080123:
8009 1) ACPI CA Core Subsystem:
8011 Added the 2008 copyright to all module headers and signons. This affects
8012 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8013 the tools/utilities.
8015 Fixed a problem with the SizeOf operator when used with Package and
8017 objects. These objects have deferred execution for some arguments, and
8019 execution is now completed before the SizeOf is executed. This problem
8021 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8025 Implemented an enhancement to the interpreter "slack mode". In the
8028 an explicit return or an implicitly returned object from the last
8030 opcode, a control method will now implicitly return an integer of value 0
8032 Microsoft compatibility. (Lin Ming) BZ 392
8034 Fixed a problem with the Load operator where an exception was not
8037 the case where the table is already loaded. (Lin Ming) BZ 463
8039 Implemented support for the use of DDBHandles as an Indexed Reference, as
8041 the ACPI spec. (Lin Ming) BZ 486
8043 Implemented support for UserTerm (Method invocation) for the Unload
8045 as per the ACPI spec. (Lin Ming) BZ 580
8047 Fixed a problem with the LoadTable operator where the OemId and
8049 input strings could cause unexpected failures if they were shorter than
8051 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8053 Implemented support for UserTerm (Method invocation) for the Unload
8055 as per the ACPI spec. (Lin Ming) BZ 580
8057 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8059 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8061 Example Code and Data Size: These are the sizes for the OS-independent
8062 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8063 debug version of the code includes the debug output trace mechanism and
8065 a much larger code and data size.
8068 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8069 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8071 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8072 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8074 2) iASL Compiler/Disassembler and Tools:
8076 Implemented support in the disassembler for checksum validation on
8078 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8080 header dump at the start of the disassembly.
8082 Implemented additional debugging information in the namespace listing
8084 created during compilation. In addition to the namespace hierarchy, the
8086 pathname to each namespace object is displayed.
8088 Fixed a problem with the disassembler where invalid ACPI tables could
8090 faults or infinite loops.
8092 Fixed an unexpected parse error when using the optional "parameter types"
8093 list in a control method declaration. (Lin Ming) BZ 397
8095 Fixed a problem where two External declarations with the same name did
8097 cause an error (Lin Ming) BZ 509
8099 Implemented support for full TermArgs (adding Argx, Localx and method
8100 invocation) for the ParameterData parameter to the LoadTable operator.
8104 ----------------------------------------
8105 19 December 2007. Summary of changes for version 20071219:
8107 1) ACPI CA Core Subsystem:
8109 Implemented full support for deferred execution for the TermArg string
8110 arguments for DataTableRegion. This enables forward references and full
8111 operand resolution for the three string arguments. Similar to
8113 deferred argument execution.) Lin Ming. BZ 430
8115 Implemented full argument resolution support for the BankValue argument
8117 BankField. Previously, only constants were supported, now any TermArg may
8119 used. Lin Ming BZ 387, 393
8121 Fixed a problem with AcpiGetDevices where the search of a branch of the
8122 device tree could be terminated prematurely. In accordance with the ACPI
8123 specification, the search down the current branch is terminated if a
8125 is both not present and not functional (instead of just not present.)
8129 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8131 the underlying AML code changed the GPE enable registers. Now, any
8133 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8135 instead of simply ignored. Rui Zhang.
8137 Fixed a problem with Index Fields where the Index register was
8139 limited to a maximum of 32 bits. Now any size may be used.
8141 Fixed a couple memory leaks associated with "implicit return" objects
8143 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8145 Example Code and Data Size: These are the sizes for the OS-independent
8146 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8147 debug version of the code includes the debug output trace mechanism and
8149 a much larger code and data size.
8152 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8153 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8155 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8156 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8158 ----------------------------------------
8159 14 November 2007. Summary of changes for version 20071114:
8161 1) ACPI CA Core Subsystem:
8163 Implemented event counters for each of the Fixed Events, the ACPI SCI
8164 (interrupt) itself, and control methods executed. Named
8165 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8167 should be useful for debugging and statistics.
8169 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8170 contents of the various event counters. Returns the current values for
8171 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8172 AcpiMethodCount. The interface can be expanded in the future if new
8174 are added. Device drivers should use this interface rather than access
8178 Fixed a problem with the FromBCD and ToBCD operators. With some
8180 the ShortDivide function worked incorrectly, causing problems with the
8182 functions with large input values. A truncation from 64-bit to 32-bit
8183 inadvertently occurred. Internal BZ 435. Lin Ming
8185 Fixed a problem with Index references passed as method arguments.
8187 passed as arguments to control methods were dereferenced immediately
8189 control was passed to the called method). The references are now
8191 passed directly to the called method. BZ 5389. Lin Ming
8193 Fixed a problem with CopyObject used in conjunction with the Index
8195 The reference was incorrectly dereferenced before the copy. The reference
8197 now correctly copied. BZ 5391. Lin Ming
8199 Fixed a problem with Control Method references within Package objects.
8201 references are now correctly generated. This completes the package
8202 construction overhaul that began in version 20071019.
8204 Example Code and Data Size: These are the sizes for the OS-independent
8205 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8206 debug version of the code includes the debug output trace mechanism and
8208 a much larger code and data size.
8211 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8212 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8214 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8215 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8218 2) iASL Compiler/Disassembler and Tools:
8220 The AcpiExec utility now installs handlers for all of the predefined
8221 Operation Region types. New types supported are: PCI_Config, CMOS, and
8224 Fixed a problem with the 64-bit version of AcpiExec where the extended
8226 bit) address fields for the DSDT and FACS within the FADT were not being
8227 used, causing truncation of the upper 32-bits of these addresses. Lin
8231 ----------------------------------------
8232 19 October 2007. Summary of changes for version 20071019:
8234 1) ACPI CA Core Subsystem:
8236 Fixed a problem with the Alias operator when the target of the alias is a
8237 named ASL operator that opens a new scope -- Scope, Device,
8239 Processor, and ThermalZone. In these cases, any children of the original
8240 operator could not be accessed via the alias, potentially causing
8242 AE_NOT_FOUND exceptions. (BZ 9067)
8244 Fixed a problem with the Package operator where all named references were
8245 created as object references and left otherwise unresolved. According to
8247 ACPI specification, a Package can only contain Data Objects or references
8249 control methods. The implication is that named references to Data Objects
8250 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
8251 immediately upon package creation. This is the approach taken with this
8252 change. References to all other named objects (Methods, Devices, Scopes,
8253 etc.) are all now properly created as reference objects. (BZ 5328)
8255 Reverted a change to Notify handling that was introduced in version
8256 20070508. This version changed the Notify handling from asynchronous to
8257 fully synchronous (Device driver Notify handling with respect to the
8259 ASL operator). It was found that this change caused more problems than it
8260 solved and was removed by most users.
8262 Fixed a problem with the Increment and Decrement operators where the type
8264 the target object could be unexpectedly and incorrectly changed. (BZ 353)
8267 Fixed a problem with the Load and LoadTable operators where the table
8268 location within the namespace was ignored. Instead, the table was always
8269 loaded into the root or current scope. Lin Ming.
8271 Fixed a problem with the Load operator when loading a table from a buffer
8272 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
8274 Fixed a problem with the Debug object where a store of a DdbHandle
8276 object to the Debug object could cause a fault.
8278 Added a table checksum verification for the Load operator, in the case
8280 the load is from a buffer. (BZ 578).
8282 Implemented additional parameter validation for the LoadTable operator.
8284 length of the input strings SignatureString, OemIdString, and OemTableId
8286 now checked for maximum lengths. (BZ 582) Lin Ming.
8288 Example Code and Data Size: These are the sizes for the OS-independent
8289 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8290 debug version of the code includes the debug output trace mechanism and
8292 a much larger code and data size.
8295 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8296 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8298 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8299 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8302 2) iASL Compiler/Disassembler:
8304 Fixed a problem where if a single file was specified and the file did not
8305 exist, no error message was emitted. (Introduced with wildcard support in
8308 ----------------------------------------
8309 19 September 2007. Summary of changes for version 20070919:
8311 1) ACPI CA Core Subsystem:
8313 Designed and implemented new external interfaces to install and remove
8314 handlers for ACPI table-related events. Current events that are defined
8316 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
8317 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
8318 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
8320 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
8321 (acpi_serialized option on Linux) could cause some systems to hang during
8322 initialization. (Bob Moore) BZ 8171
8324 Fixed a problem where objects of certain types (Device, ThermalZone,
8325 Processor, PowerResource) can be not found if they are declared and
8326 referenced from within the same control method (Lin Ming) BZ 341
8328 Example Code and Data Size: These are the sizes for the OS-independent
8329 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8330 debug version of the code includes the debug output trace mechanism and
8332 a much larger code and data size.
8335 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8336 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8338 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8339 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8342 2) iASL Compiler/Disassembler:
8344 Implemented support to allow multiple files to be compiled/disassembled
8347 single invocation. This includes command line wildcard support for both
8349 Windows and Unix versions of the compiler. This feature simplifies the
8350 disassembly and compilation of multiple ACPI tables in a single
8353 ----------------------------------------
8354 08 May 2007. Summary of changes for version 20070508:
8356 1) ACPI CA Core Subsystem:
8358 Implemented a Microsoft compatibility design change for the handling of
8360 Notify AML operator. Previously, notify handlers were dispatched and
8361 executed completely asynchronously in a deferred thread. The new design
8362 still executes the notify handlers in a different thread, but the
8364 thread that executed the Notify() now waits at a synchronization point
8366 the notify handler to complete. Some machines depend on a synchronous
8368 operator in order to operate correctly.
8370 Implemented support to allow Package objects to be passed as method
8371 arguments to the external AcpiEvaluateObject interface. Previously, this
8372 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
8373 implemented since there were no reserved control methods that required it
8376 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
8378 contained invalid non-zero values in reserved fields could cause later
8379 failures because these fields have meaning in later revisions of the
8381 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
8383 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
8385 Fixed a problem where the Global Lock handle was not properly updated if
8387 thread that acquired the Global Lock via executing AML code then
8389 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
8393 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
8394 could be corrupted if the interrupt being removed was at the head of the
8395 list. Reported by Linn Crosetto.
8397 Example Code and Data Size: These are the sizes for the OS-independent
8398 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8399 debug version of the code includes the debug output trace mechanism and
8401 a much larger code and data size.
8404 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8405 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8407 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8408 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8410 ----------------------------------------
8411 20 March 2007. Summary of changes for version 20070320:
8413 1) ACPI CA Core Subsystem:
8415 Implemented a change to the order of interpretation and evaluation of AML
8416 operand objects within the AML interpreter. The interpreter now evaluates
8417 operands in the order that they appear in the AML stream (and the
8418 corresponding ASL code), instead of in the reverse order (after the
8420 operand list has been parsed). The previous behavior caused several
8422 incompatibilities with the Microsoft AML interpreter as well as being
8423 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
8425 Implemented a change to the ACPI Global Lock support. All interfaces to
8427 global lock now allow the same thread to acquire the lock multiple times.
8428 This affects the AcpiAcquireGlobalLock external interface to the global
8430 as well as the internal use of the global lock to support AML fields -- a
8431 control method that is holding the global lock can now simultaneously
8433 AML fields that require global lock protection. Previously, in both
8435 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
8437 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
8438 Controller. There is no change to the behavior of the AML Acquire
8440 as this can already be used to acquire a mutex multiple times by the same
8441 thread. BZ 8066. With assistance from Alexey Starikovskiy.
8443 Fixed a problem where invalid objects could be referenced in the AML
8444 Interpreter after error conditions. During operand evaluation, ensure
8446 the internal "Return Object" field is cleared on error and only valid
8447 pointers are stored there. Caused occasional access to deleted objects
8449 resulted in "large reference count" warning messages. Valery Podrezov.
8451 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
8453 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
8456 Fixed an internal problem with the handling of result objects on the
8457 interpreter result stack. BZ 7872. Valery Podrezov.
8459 Removed obsolete code that handled the case where AML_NAME_OP is the
8461 of a reference (Reference.Opcode). This code was no longer necessary. BZ
8462 7874. Valery Podrezov.
8464 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
8467 remnant from the previously discontinued 16-bit support.
8469 Example Code and Data Size: These are the sizes for the OS-independent
8470 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8471 debug version of the code includes the debug output trace mechanism and
8473 a much larger code and data size.
8476 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8477 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8479 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8480 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8482 ----------------------------------------
8483 26 January 2007. Summary of changes for version 20070126:
8485 1) ACPI CA Core Subsystem:
8487 Added the 2007 copyright to all module headers and signons. This affects
8488 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8491 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
8492 during a table load. A bad pointer was passed in the case where the DSDT
8494 overridden, causing a fault in this case.
8496 Example Code and Data Size: These are the sizes for the OS-independent
8497 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8498 debug version of the code includes the debug output trace mechanism and
8500 a much larger code and data size.
8503 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8504 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8506 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8507 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8509 ----------------------------------------
8510 15 December 2006. Summary of changes for version 20061215:
8512 1) ACPI CA Core Subsystem:
8514 Support for 16-bit ACPICA has been completely removed since it is no
8516 necessary and it clutters the code. All 16-bit macros, types, and
8517 conditional compiles have been removed, cleaning up and simplifying the
8519 across the entire subsystem. DOS support is no longer needed since the
8520 bootable Linux firmware kit is now available.
8522 The handler for the Global Lock is now removed during AcpiTerminate to
8523 enable a clean subsystem restart, via the implementation of the
8524 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
8527 Implemented enhancements to the multithreading support within the
8529 to enable improved multithreading debugging and evaluation of the
8533 Debugger: Enhanced the Statistics/Memory command to emit the total
8535 memory used during the execution, as well as the maximum memory consumed
8537 each of the various object types. (Valery Podrezov)
8539 Example Code and Data Size: These are the sizes for the OS-independent
8540 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8541 debug version of the code includes the debug output trace mechanism and
8543 a much larger code and data size.
8546 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8547 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8549 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8550 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8553 2) iASL Compiler/Disassembler and Tools:
8555 AcpiExec: Implemented a new option (-m) to display full memory use
8556 statistics upon subsystem/program termination. (Valery Podrezov)
8558 ----------------------------------------
8559 09 November 2006. Summary of changes for version 20061109:
8561 1) ACPI CA Core Subsystem:
8563 Optimized the Load ASL operator in the case where the source operand is
8565 operation region. Simply map the operation region memory, instead of
8566 performing a bytewise read. (Region must be of type SystemMemory, see
8569 Fixed the Load ASL operator for the case where the source operand is a
8570 region field. A buffer object is also allowed as the source operand. BZ
8573 Fixed a problem where the Load ASL operator allowed the source operand to
8575 an operation region of any type. It is now restricted to regions of type
8576 SystemMemory, as per the ACPI specification. BZ 481
8578 Additional cleanup and optimizations for the new Table Manager code.
8580 AcpiEnable will now fail if all of the required ACPI tables are not
8582 (FADT, FACS, DSDT). BZ 477
8584 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
8586 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
8587 manually optimized to be aligned and will not work if it is byte-packed.
8589 Example Code and Data Size: These are the sizes for the OS-independent
8590 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8591 debug version of the code includes the debug output trace mechanism and
8593 a much larger code and data size.
8596 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8597 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8599 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8600 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8603 2) iASL Compiler/Disassembler and Tools:
8605 Fixed a problem where the presence of the _OSI predefined control method
8606 within complex expressions could cause an internal compiler error.
8608 AcpiExec: Implemented full region support for multiple address spaces.
8609 SpaceId is now part of the REGION object. BZ 429
8611 ----------------------------------------
8612 11 October 2006. Summary of changes for version 20061011:
8614 1) ACPI CA Core Subsystem:
8616 Completed an AML interpreter performance enhancement for control method
8617 execution. Previously a 2-pass parse/execution, control methods are now
8618 completely parsed and executed in a single pass. This improves overall
8619 interpreter performance by ~25%, reduces code size, and reduces CPU stack
8620 use. (Valery Podrezov + interpreter changes in version 20051202 that
8621 eliminated namespace loading during the pass one parse.)
8623 Implemented _CID support for PCI Root Bridge detection. If the _HID does
8625 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
8627 obtained and also checked for an ID match.
8629 Implemented additional support for the PCI _ADR execution: upsearch until
8631 device scope is found before executing _ADR. This allows PCI_Config
8632 operation regions to be declared locally within control methods
8636 Fixed a problem with a possible race condition between threads executing
8637 AcpiWalkNamespace and the AML interpreter. This condition was removed by
8638 modifying AcpiWalkNamespace to (by default) ignore all temporary
8640 entries created during any concurrent control method execution. An
8641 additional namespace race condition is known to exist between
8642 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
8645 Restructured the AML ParseLoop function, breaking it into several
8646 subfunctions in order to reduce CPU stack use and improve
8650 AcpiGetHandle: Fix for parameter validation to detect invalid
8652 of prefix handle and pathname. BZ 478
8654 Example Code and Data Size: These are the sizes for the OS-independent
8655 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8656 debug version of the code includes the debug output trace mechanism and
8658 a much larger code and data size.
8661 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8662 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8664 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8665 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8667 2) iASL Compiler/Disassembler and Tools:
8669 Ported the -g option (get local ACPI tables) to the new ACPICA Table
8671 to restore original behavior.
8673 ----------------------------------------
8674 27 September 2006. Summary of changes for version 20060927:
8676 1) ACPI CA Core Subsystem:
8678 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
8679 These functions now use a spinlock for mutual exclusion and the interrupt
8680 level indication flag is not needed.
8682 Fixed a problem with the Global Lock where the lock could appear to be
8683 obtained before it is actually obtained. The global lock semaphore was
8684 inadvertently created with one unit instead of zero units. (BZ 464)
8688 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
8690 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
8692 Example Code and Data Size: These are the sizes for the OS-independent
8693 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8694 debug version of the code includes the debug output trace mechanism and
8696 a much larger code and data size.
8699 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8700 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8702 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8703 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8706 2) iASL Compiler/Disassembler and Tools:
8708 Fixed a compilation problem with the pre-defined Resource Descriptor
8710 names where an "object does not exist" error could be incorrectly
8712 if the parent ResourceTemplate pathname places the template within a
8713 different namespace scope than the current scope. (BZ 7212)
8715 Fixed a problem where the compiler could hang after syntax errors
8717 in an ElseIf construct. (BZ 453)
8719 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
8720 operator. An incorrect output filename was produced when this parameter
8722 a null string (""). Now, the original input filename is used as the AML
8723 output filename, with an ".aml" extension.
8725 Implemented a generic batch command mode for the AcpiExec utility
8727 any AML debugger command) (Valery Podrezov).
8729 ----------------------------------------
8730 12 September 2006. Summary of changes for version 20060912:
8732 1) ACPI CA Core Subsystem:
8734 Enhanced the implementation of the "serialized mode" of the interpreter
8735 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
8736 specified, instead of creating a serialization semaphore per control
8738 the interpreter lock is simply no longer released before a blocking
8739 operation during control method execution. This effectively makes the AML
8740 Interpreter single-threaded. The overhead of a semaphore per-method is
8743 Fixed a regression where an error was no longer emitted if a control
8745 attempts to create 2 objects of the same name. This once again returns
8746 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
8748 will dynamically serialize the control method to possible prevent future
8751 Integrated a fix for a problem with PCI Express HID detection in the PCI
8752 Config Space setup procedure. (BZ 7145)
8754 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
8755 AcpiHwInitialize function - the FADT registers are now validated when the
8758 Added two new warnings during FADT verification - 1) if the FADT is
8760 than the largest known FADT version, and 2) if there is a mismatch
8763 32-bit block address and the 64-bit X counterpart (when both are non-
8766 Example Code and Data Size: These are the sizes for the OS-independent
8767 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8768 debug version of the code includes the debug output trace mechanism and
8770 a much larger code and data size.
8773 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8774 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8776 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8777 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8780 2) iASL Compiler/Disassembler and Tools:
8782 Fixed a problem with the implementation of the Switch() operator where
8784 temporary variable was declared too close to the actual Switch, instead
8786 at method level. This could cause a problem if the Switch() operator is
8787 within a while loop, causing an error on the second iteration. (BZ 460)
8789 Disassembler - fix for error emitted for unknown type for target of scope
8790 operator. Now, ignore it and continue.
8792 Disassembly of an FADT now verifies the input FADT and reports any errors
8793 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
8795 Disassembly of raw data buffers with byte initialization data now
8797 each output line with the current buffer offset.
8799 Disassembly of ASF! table now includes all variable-length data fields at
8800 the end of some of the subtables.
8802 The disassembler now emits a comment if a buffer appears to be a
8803 ResourceTemplate, but cannot be disassembled as such because the EndTag
8805 not appear at the very end of the buffer.
8807 AcpiExec - Added the "-t" command line option to enable the serialized
8809 of the AML interpreter.
8811 ----------------------------------------
8812 31 August 2006. Summary of changes for version 20060831:
8814 1) ACPI CA Core Subsystem:
8816 Miscellaneous fixes for the Table Manager:
8817 - Correctly initialize internal common FADT for all 64-bit "X" fields
8818 - Fixed a couple table mapping issues during table load
8819 - Fixed a couple alignment issues for IA64
8820 - Initialize input array to zero in AcpiInitializeTables
8821 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
8824 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
8826 immediately disabled to prevent the waking GPE from firing again and to
8827 prevent other wake GPEs from interrupting the wake process.
8829 Added the AcpiGpeCount global that tracks the number of processed GPEs,
8831 be used for debugging systems with a large number of ACPI interrupts.
8833 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
8834 both the ACPICA headers and the disassembler.
8836 Example Code and Data Size: These are the sizes for the OS-independent
8837 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8838 debug version of the code includes the debug output trace mechanism and
8840 a much larger code and data size.
8843 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8844 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8846 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8847 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8850 2) iASL Compiler/Disassembler and Tools:
8852 Disassembler support for the DMAR ACPI table.
8854 ----------------------------------------
8855 23 August 2006. Summary of changes for version 20060823:
8857 1) ACPI CA Core Subsystem:
8859 The Table Manager component has been completely redesigned and
8860 reimplemented. The new design is much simpler, and reduces the overall
8862 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
8864 now possible to obtain the ACPI tables very early during kernel
8865 initialization, even before dynamic memory management is initialized.
8866 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
8868 Obsolete ACPICA interfaces:
8870 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
8873 - AcpiLoadTable: Not needed.
8874 - AcpiUnloadTable: Not needed.
8876 New ACPICA interfaces:
8878 - AcpiInitializeTables: Must be called before the table manager can be
8880 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
8881 allocated memory after it becomes available.
8882 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
8886 Other ACPICA changes:
8888 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
8890 AcpiOsUnmapMemory to free this mapping.
8891 - AcpiGetTable returns the actual mapped table. The mapping is managed
8892 internally and must not be deleted by the caller. Use of this interface
8893 causes no additional dynamic memory allocation.
8894 - AcpiFindRootPointer: Support for physical addressing has been
8896 it appeared to be unused.
8897 - The interface to AcpiOsMapMemory has changed to be consistent with the
8898 other allocation interfaces.
8899 - The interface to AcpiOsGetRootPointer has changed to eliminate
8902 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
8904 bit platforms. Was previously 64 bits on all platforms.
8905 - The interface to the ACPI Global Lock acquire/release macros have
8907 slightly since ACPICA no longer keeps a local copy of the FACS with a
8908 constructed pointer to the actual global lock.
8910 Porting to the new table manager:
8912 - AcpiInitializeTables: Must be called once, and can be called anytime
8913 during the OS initialization process. It allows the host to specify an
8915 of memory to be used to store the internal version of the RSDT/XSDT (root
8916 table). This allows the host to access ACPI tables before memory
8918 is initialized and running.
8919 - AcpiReallocateRootTable: Can be called after memory management is
8921 to copy the root table to a dynamically allocated array, freeing up the
8922 scratch memory specified in the call to AcpiInitializeTables.
8923 - AcpiSubsystemInitialize: This existing interface is independent of the
8924 Table Manager, and does not have to be called before the Table Manager
8926 be used, it only must be called before the rest of ACPICA can be used.
8927 - ACPI Tables: Some changes have been made to the names and structure of
8929 actbl.h and actbl1.h header files and may require changes to existing
8931 For example, bitfields have been completely removed because of their lack
8933 portability across C compilers.
8934 - Update interfaces to the Global Lock acquire/release macros if local
8935 versions are used. (see acwin.h)
8937 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
8941 Example Code and Data Size: These are the sizes for the OS-independent
8942 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8943 debug version of the code includes the debug output trace mechanism and
8945 a much larger code and data size.
8948 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8949 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8951 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8952 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8955 2) iASL Compiler/Disassembler and Tools:
8957 No changes for this release.
8959 ----------------------------------------
8960 21 July 2006. Summary of changes for version 20060721:
8962 1) ACPI CA Core Subsystem:
8964 The full source code for the ASL test suite used to validate the iASL
8965 compiler and the ACPICA core subsystem is being released with the ACPICA
8966 source for the first time. The source is contained in a separate package
8968 consists of over 1100 files that exercise all ASL/AML operators. The
8970 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
8974 Completed a new design and implementation for support of the ACPI Global
8975 Lock. On the OS side, the global lock is now treated as a standard AML
8976 mutex. Previously, multiple OS threads could "acquire" the global lock
8977 simultaneously. However, this could cause the BIOS to be starved out of
8979 lock - especially in cases such as the Embedded Controller driver where
8980 there is a tight coupling between the OS and the BIOS.
8982 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
8983 The Global Lock interrupt handler no longer queues the execution of a
8984 separate thread to signal the global lock semaphore. Instead, the
8986 is signaled directly from the interrupt handler.
8988 Implemented support within the AML interpreter for package objects that
8989 contain a larger AML length (package list length) than the package
8991 count. In this case, the length of the package is truncated to match the
8992 package element count. Some BIOS code apparently modifies the package
8994 on the fly, and this change supports this behavior. Provides
8996 with the MS AML interpreter. (With assistance from Fiodor Suietov)
8998 Implemented a temporary fix for the BankValue parameter of a Bank Field
9000 support all constant values, now including the Zero and One opcodes.
9001 Evaluation of this parameter must eventually be converted to a full
9003 evaluation. A not-implemented error is now returned (temporarily) for
9005 constant values for this parameter.
9007 Fixed problem reports (Fiodor Suietov) integrated:
9008 - Fix for premature object deletion after CopyObject on Operation Region
9012 Example Code and Data Size: These are the sizes for the OS-independent
9013 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9014 debug version of the code includes the debug output trace mechanism and
9016 a much larger code and data size.
9019 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9020 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9022 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9023 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9026 2) iASL Compiler/Disassembler and Tools:
9028 No changes for this release.
9030 ----------------------------------------
9031 07 July 2006. Summary of changes for version 20060707:
9033 1) ACPI CA Core Subsystem:
9035 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9036 that do not allow the initialization of address pointers within packed
9037 structures - even though the hardware itself may support misaligned
9038 transfers. Some of the debug data structures are packed by default to
9041 Added an error message for the case where AcpiOsGetThreadId() returns
9043 A non-zero value is required by the core ACPICA code to ensure the proper
9044 operation of AML mutexes and recursive control methods.
9046 The DSDT is now the only ACPI table that determines whether the AML
9047 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9049 the hooks for per-table 32/64 switching have been removed from the code.
9051 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9053 Fixed a possible leak of an OwnerID in the error path of
9054 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9055 deletion to a single place in AcpiTbUninstallTable to correct possible
9057 when using the AcpiTbDeleteTablesByType interface (with assistance from
9060 Fixed a problem with Serialized control methods where the semaphore
9061 associated with the method could be over-signaled after multiple method
9064 Fixed two issues with the locking of the internal namespace data
9066 Both the Unload() operator and AcpiUnloadTable interface now lock the
9067 namespace during the namespace deletion associated with the table unload
9068 (with assistance from Linn Crosetto.)
9070 Fixed problem reports (Valery Podrezov) integrated:
9071 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9073 Fixed problem reports (Fiodor Suietov) integrated:
9074 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9075 - On Address Space handler deletion, needless deactivation call (BZ 374)
9076 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9078 - Possible memory leak, Notify sub-objects of Processor, Power,
9081 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9082 - Minimum Length of RSDT should be validated (BZ 379)
9083 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9085 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9089 Example Code and Data Size: These are the sizes for the OS-independent
9090 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9091 debug version of the code includes the debug output trace mechanism and
9093 a much larger code and data size.
9096 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9097 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9099 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9100 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9103 2) iASL Compiler/Disassembler and Tools:
9105 Fixed problem reports:
9106 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9109 ----------------------------------------
9110 23 June 2006. Summary of changes for version 20060623:
9112 1) ACPI CA Core Subsystem:
9114 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9115 allows the type to be customized to the host OS for improved efficiency
9116 (since a spinlock is usually a very small object.)
9118 Implemented support for "ignored" bits in the ACPI registers. According
9120 the ACPI specification, these bits should be preserved when writing the
9121 registers via a read/modify/write cycle. There are 3 bits preserved in
9123 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9125 Implemented the initial deployment of new OSL mutex interfaces. Since
9127 host operating systems have separate mutex and semaphore objects, this
9128 feature was requested. The base code now uses mutexes (and the new mutex
9129 interfaces) wherever a binary semaphore was used previously. However, for
9130 the current release, the mutex interfaces are defined as macros to map
9132 to the existing semaphore interfaces. Therefore, no OSL changes are
9134 at this time. (See acpiosxf.h)
9136 Fixed several problems with the support for the control method SyncLevel
9137 parameter. The SyncLevel now works according to the ACPI specification
9139 in concert with the Mutex SyncLevel parameter, since the current
9141 is a property of the executing thread. Mutual exclusion for control
9143 is now implemented with a mutex instead of a semaphore.
9145 Fixed three instances of the use of the C shift operator in the bitfield
9146 support code (exfldio.c) to avoid the use of a shift value larger than
9148 target data width. The behavior of C compilers is undefined in this case
9150 can cause unpredictable results, and therefore the case must be detected
9152 avoided. (Fiodor Suietov)
9154 Added an info message whenever an SSDT or OEM table is loaded dynamically
9155 via the Load() or LoadTable() ASL operators. This should improve
9157 capability since it will show exactly what tables have been loaded
9159 the tables present in the RSDT/XSDT.)
9161 Example Code and Data Size: These are the sizes for the OS-independent
9162 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9163 debug version of the code includes the debug output trace mechanism and
9165 a much larger code and data size.
9168 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9169 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9171 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9172 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9175 2) iASL Compiler/Disassembler and Tools:
9177 No changes for this release.
9179 ----------------------------------------
9180 08 June 2006. Summary of changes for version 20060608:
9182 1) ACPI CA Core Subsystem:
9184 Converted the locking mutex used for the ACPI hardware to a spinlock.
9186 change should eliminate all problems caused by attempting to acquire a
9187 semaphore at interrupt level, and it means that all ACPICA external
9188 interfaces that directly access the ACPI hardware can be safely called
9190 interrupt level. OSL code that implements the semaphore interfaces should
9192 able to eliminate any workarounds for being called at interrupt level.
9194 Fixed a regression introduced in 20060526 where the ACPI device
9195 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9197 did not have an optional _INI method.
9199 Fixed an IndexField issue where a write to the Data Register should be
9200 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9204 Fixed problem reports (Valery Podrezov) integrated:
9205 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9207 Fixed problem reports (Fiodor Suietov) integrated:
9208 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9210 Removed four global mutexes that were obsolete and were no longer being
9213 Example Code and Data Size: These are the sizes for the OS-independent
9214 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9215 debug version of the code includes the debug output trace mechanism and
9217 a much larger code and data size.
9220 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9221 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9223 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9224 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9227 2) iASL Compiler/Disassembler and Tools:
9229 Fixed a fault when using -g option (get tables from registry) on Windows
9232 Fixed problem reports integrated:
9233 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9234 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9236 - Global table revision override (-r) is ignored (BZ 413)
9238 ----------------------------------------
9239 26 May 2006. Summary of changes for version 20060526:
9241 1) ACPI CA Core Subsystem:
9243 Restructured, flattened, and simplified the internal interfaces for
9244 namespace object evaluation - resulting in smaller code, less CPU stack
9246 and fewer interfaces. (With assistance from Mikhail Kouzmich)
9248 Fixed a problem with the CopyObject operator where the first parameter
9250 not typed correctly for the parser, interpreter, compiler, and
9252 Caused various errors and unexpected behavior.
9254 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
9255 produced incorrect results with some C compilers. Since the behavior of C
9256 compilers when the shift value is larger than the datatype width is
9257 apparently not well defined, the interpreter now detects this condition
9259 simply returns zero as expected in all such cases. (BZ 395)
9261 Fixed problem reports (Valery Podrezov) integrated:
9262 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
9263 - Allow interpreter to handle nested method declarations (BZ 5361)
9265 Fixed problem reports (Fiodor Suietov) integrated:
9266 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
9268 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
9270 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
9271 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
9272 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
9273 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
9274 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
9275 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
9276 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
9278 - Status of the Global Initialization Handler call not used (BZ 366)
9279 - Incorrect object parameter to Global Initialization Handler (BZ 367)
9281 Example Code and Data Size: These are the sizes for the OS-independent
9282 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9283 debug version of the code includes the debug output trace mechanism and
9285 a much larger code and data size.
9288 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9289 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9291 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9292 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9295 2) iASL Compiler/Disassembler and Tools:
9297 Modified the parser to allow the names IO, DMA, and IRQ to be used as
9298 namespace identifiers with no collision with existing resource descriptor
9299 macro names. This provides compatibility with other ASL compilers and is
9300 most useful for disassembly/recompilation of existing tables without
9302 errors. (With assistance from Thomas Renninger)
9304 Disassembler: fixed an incorrect disassembly problem with the
9305 DataTableRegion and CopyObject operators. Fixed a possible fault during
9306 disassembly of some Alias operators.
9308 ----------------------------------------
9309 12 May 2006. Summary of changes for version 20060512:
9311 1) ACPI CA Core Subsystem:
9313 Replaced the AcpiOsQueueForExecution interface with a new interface named
9314 AcpiOsExecute. The major difference is that the new interface does not
9316 a Priority parameter, this appeared to be useless and has been replaced
9319 Type parameter. The Type tells the host what type of execution is being
9320 requested, such as global lock handler, notify handler, GPE handler, etc.
9321 This allows the host to queue and execute the request as appropriate for
9323 request type, possibly using different work queues and different
9325 for the various request types. This enables fixes for multithreading
9326 deadlock problems such as BZ #5534, and will require changes to all
9328 OS interface layers. (Alexey Starikovskiy and Bob Moore)
9330 Fixed a possible memory leak associated with the support for the so-
9332 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
9335 Fixed a problem with the Load() operator where a table load from an
9336 operation region could overwrite an internal table buffer by up to 7
9338 and cause alignment faults on IPF systems. (With assistance from Luming
9341 Example Code and Data Size: These are the sizes for the OS-independent
9342 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9343 debug version of the code includes the debug output trace mechanism and
9345 a much larger code and data size.
9348 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9349 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9351 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9352 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9356 2) iASL Compiler/Disassembler and Tools:
9358 Disassembler: Implemented support to cross reference the internal
9360 and automatically generate ASL External() statements for symbols not
9362 within the current table being disassembled. This will simplify the
9363 disassembly and recompilation of interdependent tables such as SSDTs
9365 these statements will no longer have to be added manually.
9367 Disassembler: Implemented experimental support to automatically detect
9368 invocations of external control methods and generate appropriate
9370 statements. This is problematic because the AML cannot be correctly
9372 until the number of arguments for each control method is known.
9374 standalone method invocations and invocations as the source operand of a
9375 Store() statement are supported.
9377 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
9378 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
9379 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
9380 more readable and likely closer to the original ASL source.
9382 ----------------------------------------
9383 21 April 2006. Summary of changes for version 20060421:
9385 1) ACPI CA Core Subsystem:
9387 Removed a device initialization optimization introduced in 20051216 where
9388 the _STA method was not run unless an _INI was also present for the same
9389 device. This optimization could cause problems because it could allow
9391 methods to be run within a not-present device subtree. (If a not-present
9392 device had no _INI, _STA would not be run, the not-present status would
9394 be discovered, and the children of the device would be incorrectly
9397 Implemented a new _STA optimization where namespace subtrees that do not
9398 contain _INI are identified and ignored during device initialization.
9399 Selectively running _STA can significantly improve boot time on large
9400 machines (with assistance from Len Brown.)
9402 Implemented support for the device initialization case where the returned
9403 _STA flags indicate a device not-present but functioning. In this case,
9405 is not run, but the device children are examined for presence, as per the
9408 Implemented an additional change to the IndexField support in order to
9409 conform to MS behavior. The value written to the Index Register is not
9410 simply a byte offset, it is a byte offset in units of the access width of
9411 the parent Index Field. (Fiodor Suietov)
9413 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
9414 interface is called during the creation of all AML operation regions, and
9415 allows the host OS to exert control over what addresses it will allow the
9416 AML code to access. Operation Regions whose addresses are disallowed will
9417 cause a runtime exception when they are actually accessed (will not
9419 or abort table loading.) See oswinxf or osunixxf for an example
9422 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
9423 interface allows the host OS to match the various "optional"
9424 interface/behavior strings for the _OSI predefined control method as
9425 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
9426 for an example implementation.
9428 Restructured and corrected various problems in the exception handling
9430 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
9431 (with assistance from Takayoshi Kochi.)
9433 Modified the Linux source converter to ignore quoted string literals
9435 converting identifiers from mixed to lower case. This will correct
9437 with the disassembler and other areas where such strings must not be
9440 The ACPI_FUNCTION_* macros no longer require quotes around the function
9441 name. This allows the Linux source converter to convert the names, now
9443 the converter ignores quoted strings.
9445 Example Code and Data Size: These are the sizes for the OS-independent
9446 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9447 debug version of the code includes the debug output trace mechanism and
9449 a much larger code and data size.
9453 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9454 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9456 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9457 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9460 2) iASL Compiler/Disassembler and Tools:
9462 Implemented 3 new warnings for iASL, and implemented multiple warning
9466 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
9468 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
9469 check for the possible timeout, a warning is issued.
9471 2) Useless operators: If an ASL operator does not specify an optional
9473 operand and it also does not use the function return value from the
9474 operator, a warning is issued since the operator effectively does
9477 3) Unreferenced objects: If a namespace object is created, but never
9478 referenced, a warning is issued. This is a warning level 2 since there
9480 cases where this is ok, such as when a secondary table is loaded that
9482 the unreferenced objects. Even so, care is taken to only flag objects
9484 don't look like they will ever be used. For example, the reserved methods
9485 (starting with an underscore) are usually not referenced because it is
9486 expected that the OS will invoke them.
9488 ----------------------------------------
9489 31 March 2006. Summary of changes for version 20060331:
9491 1) ACPI CA Core Subsystem:
9493 Implemented header file support for the following additional ACPI tables:
9494 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
9496 all current and known ACPI tables are now defined in the ACPICA headers
9498 are available for use by device drivers and other software.
9500 Implemented support to allow tables that contain ACPI names with invalid
9501 characters to be loaded. Previously, this would cause the table load to
9502 fail, but since there are several known cases of such tables on existing
9503 machines, this change was made to enable ACPI support for them. Also,
9505 matches the behavior of the Microsoft ACPI implementation.
9507 Fixed a couple regressions introduced during the memory optimization in
9509 20060317 release. The namespace node definition required additional
9510 reorganization and an internal datatype that had been changed to 8-bit
9512 restored to 32-bit. (Valery Podrezov)
9514 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
9515 could be passed through to AcpiOsReleaseObject which is unexpected. Such
9516 null pointers are now trapped and ignored, matching the behavior of the
9517 previous implementation before the deployment of AcpiOsReleaseObject.
9518 (Valery Podrezov, Fiodor Suietov)
9520 Fixed a memory mapping leak during the deletion of a SystemMemory
9522 region where a cached memory mapping was not deleted. This became a
9523 noticeable problem for operation regions that are defined within
9525 used control methods. (Dana Meyers)
9527 Reorganized the ACPI table header files into two main files: one for the
9528 ACPI tables consumed by the ACPICA core, and another for the
9530 ACPI tables that are consumed by the drivers and other software. The
9532 FADT definitions were merged into one common section and three different
9533 tables (ACPI 1.0, 1.0+, and 2.0)
9535 Example Code and Data Size: These are the sizes for the OS-independent
9536 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9537 debug version of the code includes the debug output trace mechanism and
9539 a much larger code and data size.
9542 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9543 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9545 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9546 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9549 2) iASL Compiler/Disassembler and Tools:
9551 Disassembler: Implemented support to decode and format all non-AML ACPI
9552 tables (tables other than DSDTs and SSDTs.) This includes the new tables
9553 added to the ACPICA headers, therefore all current and known ACPI tables
9557 Disassembler: The change to allow ACPI names with invalid characters also
9558 enables the disassembly of such tables. Invalid characters within names
9560 changed to '*' to make the name printable; the iASL compiler will still
9561 generate an error for such names, however, since this is an invalid ACPI
9564 Implemented an option for AcpiXtract (-a) to extract all tables found in
9566 input file. The default invocation extracts only the DSDTs and SSDTs.
9568 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
9569 makefile for the AcpiXtract utility.
9571 ----------------------------------------
9572 17 March 2006. Summary of changes for version 20060317:
9574 1) ACPI CA Core Subsystem:
9576 Implemented the use of a cache object for all internal namespace nodes.
9577 Since there are about 1000 static nodes in a typical system, this will
9578 decrease memory use for cache implementations that minimize per-
9580 overhead (such as a slab allocator.)
9582 Removed the reference count mechanism for internal namespace nodes, since
9584 was deemed unnecessary. This reduces the size of each namespace node by
9585 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
9587 and 32 bytes for the 64-bit case.
9589 Optimized several internal data structures to reduce object size on 64-
9591 platforms by packing data within the 64-bit alignment. This includes the
9592 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
9593 instances corresponding to the namespace objects.
9595 Added two new strings for the predefined _OSI method: "Windows 2001.1
9599 Split the allocation tracking mechanism out to a separate file, from
9600 utalloc.c to uttrack.c. This mechanism appears to be only useful for
9601 application-level code. Kernels may wish to not include uttrack.c in
9604 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
9606 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
9609 Code and Data Size: These are the sizes for the acpica.lib produced by
9611 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9613 driver or OSPM code. The debug version of the code includes the debug
9615 trace mechanism and has a much larger code and data size. Note that these
9616 values will vary depending on the efficiency of the compiler and the
9617 compiler options used during generation.
9620 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9621 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9623 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9624 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9627 2) iASL Compiler/Disassembler and Tools:
9629 Implemented an ANSI C version of the acpixtract utility. This version
9631 automatically extract the DSDT and all SSDTs from the input acpidump text
9632 file and dump the binary output to separate files. It can also display a
9633 summary of the input file including the headers for each table found and
9634 will extract any single ACPI table, with any signature. (See
9635 source/tools/acpixtract)
9637 ----------------------------------------
9638 10 March 2006. Summary of changes for version 20060310:
9640 1) ACPI CA Core Subsystem:
9642 Tagged all external interfaces to the subsystem with the new
9643 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
9645 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
9646 macro. The default definition is NULL.
9648 Added the ACPI_THREAD_ID type for the return value from
9650 This allows the host to define this as necessary to simplify kernel
9651 integration. The default definition is ACPI_NATIVE_UINT.
9653 Fixed two interpreter problems related to error processing, the deletion
9655 objects, and placing invalid pointers onto the internal operator result
9656 stack. BZ 6028, 6151 (Valery Podrezov)
9658 Increased the reference count threshold where a warning is emitted for
9660 reference counts in order to eliminate unnecessary warnings on systems
9662 large namespaces (especially 64-bit.) Increased the value from 0x400 to
9665 Due to universal disagreement as to the meaning of the 'c' in the
9667 function, the ACPI_MEM_CALLOCATE macro has been renamed to
9668 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
9669 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
9672 Code and Data Size: These are the sizes for the acpica.lib produced by
9674 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9676 driver or OSPM code. The debug version of the code includes the debug
9678 trace mechanism and has a much larger code and data size. Note that these
9679 values will vary depending on the efficiency of the compiler and the
9680 compiler options used during generation.
9683 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9684 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9686 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9687 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9690 2) iASL Compiler/Disassembler:
9692 Disassembler: implemented support for symbolic resource descriptor
9693 references. If a CreateXxxxField operator references a fixed offset
9696 resource descriptor, a name is assigned to the descriptor and the offset
9698 translated to the appropriate resource tag and pathname. The addition of
9699 this support brings the disassembled code very close to the original ASL
9700 source code and helps eliminate run-time errors when the disassembled
9702 is modified (and recompiled) in such a way as to invalidate the original
9705 Implemented support for a Descriptor Name as the last parameter to the
9707 Register() macro. This parameter was inadvertently left out of the ACPI
9708 specification, and will be added for ACPI 3.0b.
9710 Fixed a problem where the use of the "_OSI" string (versus the full path
9711 "\_OSI") caused an internal compiler error. ("No back ptr to op")
9713 Fixed a problem with the error message that occurs when an invalid string
9715 used for a _HID object (such as one with an embedded asterisk:
9717 The correct message is now displayed.
9719 ----------------------------------------
9720 17 February 2006. Summary of changes for version 20060217:
9722 1) ACPI CA Core Subsystem:
9724 Implemented a change to the IndexField support to match the behavior of
9726 Microsoft AML interpreter. The value written to the Index register is now
9728 byte offset, no longer an index based upon the width of the Data
9730 This should fix IndexField problems seen on some machines where the Data
9731 register is not exactly one byte wide. The ACPI specification will be
9732 clarified on this point.
9734 Fixed a problem where several resource descriptor types could overrun the
9735 internal descriptor buffer due to size miscalculation: VendorShort,
9736 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
9737 affect all platforms.
9739 Fixed a problem where individual resource descriptors were misaligned
9741 the internal buffer, causing alignment faults on IA64 platforms.
9743 Code and Data Size: These are the sizes for the acpica.lib produced by
9745 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9747 driver or OSPM code. The debug version of the code includes the debug
9749 trace mechanism and has a much larger code and data size. Note that these
9750 values will vary depending on the efficiency of the compiler and the
9751 compiler options used during generation.
9754 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9755 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9757 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9758 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9761 2) iASL Compiler/Disassembler:
9763 Implemented support for new reserved names: _WDG and _WED are Microsoft
9764 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
9765 defined method (Throttling Depth Limit.)
9767 Fixed a problem where a zero-length VendorShort or VendorLong resource
9768 descriptor was incorrectly emitted as a descriptor of length one.
9770 ----------------------------------------
9771 10 February 2006. Summary of changes for version 20060210:
9773 1) ACPI CA Core Subsystem:
9775 Removed a couple of extraneous ACPI_ERROR messages that appeared during
9776 normal execution. These became apparent after the conversion from
9779 Fixed a problem where the CreateField operator could hang if the BitIndex
9781 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
9783 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
9784 failed with an exception. This also fixes a couple of related RefOf and
9785 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
9787 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
9789 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
9793 Implemented a memory cleanup at the end of the execution of each
9795 of an AML While() loop, preventing the accumulation of outstanding
9797 (Valery Podrezov, BZ 5427)
9799 Eliminated a chunk of duplicate code in the object resolution code.
9803 Fixed several warnings during the 64-bit code generation.
9805 The AcpiSrc source code conversion tool now inserts one line of
9807 after an if() statement that is followed immediately by a comment,
9809 readability of the Linux code.
9811 Code and Data Size: The current and previous library sizes for the core
9812 subsystem are shown below. These are the code and data sizes for the
9813 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9815 values do not include any ACPI driver or OSPM code. The debug version of
9817 code includes the debug output trace mechanism and has a much larger code
9818 and data size. Note that these values will vary depending on the
9820 of the compiler and the compiler options used during generation.
9823 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9824 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9826 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9827 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9830 2) iASL Compiler/Disassembler:
9832 Fixed a problem with the disassembly of a BankField operator with a
9834 expression for the BankValue parameter.
9836 ----------------------------------------
9837 27 January 2006. Summary of changes for version 20060127:
9839 1) ACPI CA Core Subsystem:
9841 Implemented support in the Resource Manager to allow unresolved
9843 references within resource package objects for the _PRT method. This
9845 is in addition to the previously implemented unresolved reference support
9846 within the AML parser. If the interpreter slack mode is enabled, these
9847 unresolved references will be passed through to the caller as a NULL
9851 Implemented and deployed new macros and functions for error and warning
9852 messages across the subsystem. These macros are simpler and generate less
9853 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
9854 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
9855 macros remain defined to allow ACPI drivers time to migrate to the new
9858 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
9860 Acquire/Release Lock OSL interfaces.
9862 Fixed a problem where Alias ASL operators are sometimes not correctly
9863 resolved, in both the interpreter and the iASL compiler.
9865 Fixed several problems with the implementation of the
9866 ConcatenateResTemplate
9867 ASL operator. As per the ACPI specification, zero length buffers are now
9868 treated as a single EndTag. One-length buffers always cause a fatal
9869 exception. Non-zero length buffers that do not end with a full 2-byte
9871 cause a fatal exception.
9873 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
9874 interface. (With assistance from Thomas Renninger)
9876 Code and Data Size: The current and previous library sizes for the core
9877 subsystem are shown below. These are the code and data sizes for the
9878 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9880 values do not include any ACPI driver or OSPM code. The debug version of
9882 code includes the debug output trace mechanism and has a much larger code
9883 and data size. Note that these values will vary depending on the
9885 of the compiler and the compiler options used during generation.
9888 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9889 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9891 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9892 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9895 2) iASL Compiler/Disassembler:
9897 Fixed an internal error that was generated for any forward references to
9901 ----------------------------------------
9902 13 January 2006. Summary of changes for version 20060113:
9904 1) ACPI CA Core Subsystem:
9906 Added 2006 copyright to all module headers and signons. This affects
9907 virtually every file in the ACPICA core subsystem, iASL compiler, and the
9910 Enhanced the ACPICA error reporting in order to simplify user migration
9912 the non-debug version of ACPICA. Replaced all instances of the
9913 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
9915 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
9916 respectively. This preserves all error and warning messages in the non-
9918 version of the ACPICA code (this has been referred to as the "debug lite"
9919 option.) Over 200 cases were converted to create a total of over 380
9920 error/warning messages across the ACPICA code. This increases the code
9922 data size of the default non-debug version of the code somewhat (about
9924 but all error/warning reporting may be disabled if desired (and code
9925 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
9926 configuration option. The size of the debug version of ACPICA remains
9930 Fixed a memory leak within the AML Debugger "Set" command. One object was
9931 not properly deleted for every successful invocation of the command.
9933 Code and Data Size: The current and previous library sizes for the core
9934 subsystem are shown below. These are the code and data sizes for the
9935 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9937 values do not include any ACPI driver or OSPM code. The debug version of
9939 code includes the debug output trace mechanism and has a much larger code
9940 and data size. Note that these values will vary depending on the
9942 of the compiler and the compiler options used during generation.
9945 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9946 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9948 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9949 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9952 2) iASL Compiler/Disassembler:
9954 The compiler now officially supports the ACPI 3.0a specification that was
9955 released on December 30, 2005. (Specification is available at
9958 ----------------------------------------
9959 16 December 2005. Summary of changes for version 20051216:
9961 1) ACPI CA Core Subsystem:
9963 Implemented optional support to allow unresolved names within ASL Package
9964 objects. A null object is inserted in the package when a named reference
9965 cannot be located in the current namespace. Enabled via the interpreter
9966 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
9968 that contain such code.
9970 Implemented an optimization to the initialization sequence that can
9972 boot time. During ACPI device initialization, the _STA method is now run
9974 and only if the _INI method exists. The _STA method is used to determine
9976 the device is present; An _INI can only be run if _STA returns present,
9978 it is a waste of time to run the _STA method if the _INI does not exist.
9979 (Prototype and assistance from Dong Wei)
9981 Implemented use of the C99 uintptr_t for the pointer casting macros if it
9983 available in the current compiler. Otherwise, the default (void *) cast
9987 Fixed some possible memory leaks found within the execution path of the
9988 Break, Continue, If, and CreateField operators. (Valery Podrezov)
9990 Fixed a problem introduced in the 20051202 release where an exception is
9991 generated during method execution if a control method attempts to declare
9994 Moved resource descriptor string constants that are used by both the AML
9995 disassembler and AML debugger to the common utilities directory so that
9996 these components are independent.
9998 Implemented support in the AcpiExec utility (-e switch) to globally
10000 exceptions during control method execution (method is not aborted.)
10002 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10005 Code and Data Size: The current and previous library sizes for the core
10006 subsystem are shown below. These are the code and data sizes for the
10007 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10009 values do not include any ACPI driver or OSPM code. The debug version of
10011 code includes the debug output trace mechanism and has a much larger code
10012 and data size. Note that these values will vary depending on the
10014 of the compiler and the compiler options used during generation.
10017 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10018 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10020 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10021 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10024 2) iASL Compiler/Disassembler:
10026 Fixed a problem where a CPU stack overflow fault could occur if a
10028 method call was made from within a Return statement.
10030 ----------------------------------------
10031 02 December 2005. Summary of changes for version 20051202:
10033 1) ACPI CA Core Subsystem:
10035 Modified the parsing of control methods to no longer create namespace
10036 objects during the first pass of the parse. Objects are now created only
10037 during the execute phase, at the moment the namespace creation operator
10039 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10041 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10042 reentrant control methods are protected by an AML mutex. The mutex will
10044 correctly block multiple threads from attempting to create the same
10048 Increased the number of available Owner Ids for namespace object tracking
10049 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10051 some machines with a large number of ACPI tables (either static or
10054 Fixed a problem with the AcpiExec utility where a fault could occur when
10056 -b switch (batch mode) is used.
10058 Enhanced the namespace dump routine to output the owner ID for each
10061 Code and Data Size: The current and previous library sizes for the core
10062 subsystem are shown below. These are the code and data sizes for the
10063 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10065 values do not include any ACPI driver or OSPM code. The debug version of
10067 code includes the debug output trace mechanism and has a much larger code
10068 and data size. Note that these values will vary depending on the
10070 of the compiler and the compiler options used during generation.
10073 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10074 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10076 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10077 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10080 2) iASL Compiler/Disassembler:
10082 Fixed a parse error during compilation of certain Switch/Case constructs.
10084 simplify the parse, the grammar now allows for multiple Default
10086 and this error is now detected and flagged during the analysis phase.
10088 Disassembler: The disassembly now includes the contents of the original
10089 table header within a comment at the start of the file. This includes the
10090 name and version of the original ASL compiler.
10092 ----------------------------------------
10093 17 November 2005. Summary of changes for version 20051117:
10095 1) ACPI CA Core Subsystem:
10097 Fixed a problem in the AML parser where the method thread count could be
10098 decremented below zero if any errors occurred during the method parse
10100 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10102 This also fixed a related regression with the mechanism that detects and
10103 corrects methods that cannot properly handle reentrancy (related to the
10104 deployment of the new OwnerId mechanism.)
10106 Eliminated the pre-parsing of control methods (to detect errors) during
10107 table load. Related to the problem above, this was causing unwind issues
10109 any errors occurred during the parse, and it seemed to be overkill. A
10111 load should not be aborted if there are problems with any single control
10112 method, thus rendering this feature rather pointless.
10114 Fixed a problem with the new table-driven resource manager where an
10116 buffer overflow could occur for small resource templates.
10118 Implemented a new external interface, AcpiGetVendorResource. This
10120 will find and return a vendor-defined resource descriptor within a _CRS
10122 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10125 Removed the length limit (200) on string objects as per the upcoming ACPI
10126 3.0A specification. This affects the following areas of the interpreter:
10128 any implicit conversion of a Buffer to a String, 2) a String object
10130 of the ASL Concatentate operator, 3) the String object result of the ASL
10133 Fixed a problem in the Windows OS interface layer (OSL) where a
10135 on a semaphore object would incorrectly timeout. This allows the
10136 multithreading features of the AcpiExec utility to work properly under
10139 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10140 the recently added file named "utresrc.c".
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: 76.2K Code, 12.3K Data, 88.5K Total
10155 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10157 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10158 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10161 2) iASL Compiler/Disassembler:
10163 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10164 specification. For the iASL compiler, this means that string literals
10166 the source ASL can be of any length.
10168 Enhanced the listing output to dump the AML code for resource descriptors
10169 immediately after the ASL code for each descriptor, instead of in a block
10171 the end of the entire resource template.
10173 Enhanced the compiler debug output to dump the entire original parse tree
10174 constructed during the parse phase, before any transforms are applied to
10176 tree. The transformed tree is dumped also.
10178 ----------------------------------------
10179 02 November 2005. Summary of changes for version 20051102:
10181 1) ACPI CA Core Subsystem:
10183 Modified the subsystem initialization sequence to improve GPE support.
10185 GPE initialization has been split into two parts in order to defer
10187 of the _PRW methods (Power Resources for Wake) until after the hardware
10189 fully initialized and the SCI handler is installed. This allows the _PRW
10190 methods to access fields protected by the Global Lock. This will fix
10192 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10194 Converted the ACPI internal object disassemble and display code within
10196 AML debugger to fully table-driven operation, reducing code size and
10197 increasing maintainability.
10199 Fixed a regression with the ConcatenateResTemplate() ASL operator
10201 in the 20051021 release.
10203 Implemented support for "local" internal ACPI object types within the
10204 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10205 These local types include RegionFields, BankFields, IndexFields, Alias,
10209 Moved common AML resource handling code into a new file, "utresrc.c".
10211 code is shared by both the Resource Manager and the AML Debugger.
10213 Code and Data Size: The current and previous library sizes for the core
10214 subsystem are shown below. These are the code and data sizes for the
10215 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10217 values do not include any ACPI driver or OSPM code. The debug version of
10219 code includes the debug output trace mechanism and has a much larger code
10220 and data size. Note that these values will vary depending on the
10222 of the compiler and the compiler options used during generation.
10225 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10226 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10228 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10229 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10232 2) iASL Compiler/Disassembler:
10234 Fixed a problem with very large initializer lists (more than 4000
10236 for both Buffer and Package objects where the parse stack could overflow.
10238 Enhanced the pre-compile source code scan for non-ASCII characters to
10240 characters within comment fields. The scan is now always performed and is
10242 longer optional, detecting invalid characters within a source file
10243 immediately rather than during the parse phase or later.
10245 Enhanced the ASL grammar definition to force early reductions on all
10247 style grammar elements so that the overall parse stack usage is greatly
10248 reduced. This should improve performance and reduce the possibility of
10252 Eliminated all reduce/reduce conflicts in the iASL parser generation.
10254 with the addition of a %expected statement, the compiler generates from
10255 source with no warnings.
10257 Fixed a possible segment fault in the disassembler if the input filename
10258 does not contain a "dot" extension (Thomas Renninger).
10260 ----------------------------------------
10261 21 October 2005. Summary of changes for version 20051021:
10263 1) ACPI CA Core Subsystem:
10265 Implemented support for the EM64T and other x86-64 processors. This
10266 essentially entails recognizing that these processors support non-aligned
10267 memory transfers. Previously, all 64-bit processors were assumed to lack
10268 hardware support for non-aligned transfers.
10270 Completed conversion of the Resource Manager to nearly full table-driven
10271 operation. Specifically, the resource conversion code (convert AML to
10272 internal format and the reverse) and the debug code to dump internal
10273 resource descriptors are fully table-driven, reducing code and data size
10275 improving maintainability.
10277 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
10279 on 64-bit processors instead of a fixed 32-bit word. (With assistance
10281 Alexey Starikovskiy)
10283 Implemented support within the resource conversion code for the Type-
10284 Specific byte within the various ACPI 3.0 *WordSpace macros.
10286 Fixed some issues within the resource conversion code for the type-
10288 flags for both Memory and I/O address resource descriptors. For Memory,
10289 implemented support for the MTP and TTP flags. For I/O, split the TRS and
10290 TTP flags into two separate fields.
10292 Code and Data Size: The current and previous library sizes for the core
10293 subsystem are shown below. These are the code and data sizes for the
10294 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10296 values do not include any ACPI driver or OSPM code. The debug version of
10298 code includes the debug output trace mechanism and has a much larger code
10299 and data size. Note that these values will vary depending on the
10301 of the compiler and the compiler options used during generation.
10304 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10305 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10307 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10308 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10312 2) iASL Compiler/Disassembler:
10314 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
10316 corresponding ResourceSource string was not also present in a resource
10317 descriptor declaration. This restriction caused problems with existing
10318 AML/ASL code that includes the Index byte without the string. When such
10320 was disassembled, it could not be compiled without modification. Further,
10321 the modified code created a resource template with a different size than
10323 original, breaking code that used fixed offsets into the resource
10327 Removed a recent feature of the disassembler to ignore a lone
10329 byte. This byte is now emitted if present so that the exact AML can be
10330 reproduced when the disassembled code is recompiled.
10332 Improved comments and text alignment for the resource descriptor code
10333 emitted by the disassembler.
10335 Implemented disassembler support for the ACPI 3.0 AccessSize field within
10337 Register() resource descriptor.
10339 ----------------------------------------
10340 30 September 2005. Summary of changes for version 20050930:
10342 1) ACPI CA Core Subsystem:
10344 Completed a major overhaul of the Resource Manager code - specifically,
10345 optimizations in the area of the AML/internal resource conversion code.
10347 code has been optimized to simplify and eliminate duplicated code, CPU
10349 use has been decreased by optimizing function parameters and local
10350 variables, and naming conventions across the manager have been
10352 for clarity and ease of maintenance (this includes function, parameter,
10353 variable, and struct/typedef names.) The update may force changes in some
10354 driver code, depending on how resources are handled by the host OS.
10356 All Resource Manager dispatch and information tables have been moved to a
10357 single location for clarity and ease of maintenance. One new file was
10358 created, named "rsinfo.c".
10360 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
10361 guarantee that the argument is not evaluated twice, making them less
10363 to macro side-effects. However, since there exists the possibility of
10364 additional stack use if a particular compiler cannot optimize them (such
10366 in the debug generation case), the original macros are optionally
10368 Note that some invocations of the return_VALUE macro may now cause size
10369 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
10371 eliminate these. (From Randy Dunlap)
10373 Implemented a new mechanism to enable debug tracing for individual
10375 methods. A new external interface, AcpiDebugTrace, is provided to enable
10376 this mechanism. The intent is to allow the host OS to easily enable and
10377 disable tracing for problematic control methods. This interface can be
10378 easily exposed to a user or debugger interface if desired. See the file
10379 psxface.c for details.
10381 AcpiUtCallocate will now return a valid pointer if a length of zero is
10382 specified - a length of one is used and a warning is issued. This matches
10383 the behavior of AcpiUtAllocate.
10385 Code and Data Size: The current and previous library sizes for the core
10386 subsystem are shown below. These are the code and data sizes for the
10387 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10389 values do not include any ACPI driver or OSPM code. The debug version of
10391 code includes the debug output trace mechanism and has a much larger code
10392 and data size. Note that these values will vary depending on the
10394 of the compiler and the compiler options used during generation.
10397 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10398 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10400 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10401 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10404 2) iASL Compiler/Disassembler:
10406 A remark is issued if the effective compile-time length of a package or
10407 buffer is zero. Previously, this was a warning.
10409 ----------------------------------------
10410 16 September 2005. Summary of changes for version 20050916:
10412 1) ACPI CA Core Subsystem:
10414 Fixed a problem within the Resource Manager where support for the Generic
10415 Register descriptor was not fully implemented. This descriptor is now
10417 recognized, parsed, disassembled, and displayed.
10419 Completely restructured the Resource Manager code to utilize table-driven
10420 dispatch and lookup, eliminating many of the large switch() statements.
10422 reduces overall subsystem code size and code complexity. Affects the
10423 resource parsing and construction, disassembly, and debug dump output.
10425 Cleaned up and restructured the debug dump output for all resource
10426 descriptors. Improved readability of the output and reduced code size.
10428 Fixed a problem where changes to internal data structures caused the
10429 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
10431 Code and Data Size: The current and previous library sizes for the core
10432 subsystem are shown below. These are the code and data sizes for the
10433 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10435 values do not include any ACPI driver or OSPM code. The debug version of
10437 code includes the debug output trace mechanism and has a much larger code
10438 and data size. Note that these values will vary depending on the
10440 of the compiler and the compiler options used during generation.
10443 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10444 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10446 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10447 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10450 2) iASL Compiler/Disassembler:
10452 Updated the disassembler to automatically insert an EndDependentFn()
10454 into the ASL stream if this macro is missing in the original AML code,
10455 simplifying compilation of the resulting ASL module.
10457 Fixed a problem in the disassembler where a disassembled ResourceSource
10458 string (within a large resource descriptor) was not surrounded by quotes
10460 not followed by a comma, causing errors when the resulting ASL module was
10461 compiled. Also, escape sequences within a ResourceSource string are now
10462 handled correctly (especially "\\")
10464 ----------------------------------------
10465 02 September 2005. Summary of changes for version 20050902:
10467 1) ACPI CA Core Subsystem:
10469 Fixed a problem with the internal Owner ID allocation and deallocation
10470 mechanisms for control method execution and recursive method invocation.
10471 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
10472 messages seen on some systems. Recursive method invocation depth is
10473 currently limited to 255. (Alexey Starikovskiy)
10475 Completely eliminated all vestiges of support for the "module-level
10476 executable code" until this support is fully implemented and debugged.
10478 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
10479 some systems that invoke this support.
10481 Fixed a problem within the resource manager code where the transaction
10483 for a 64-bit address descriptor were handled incorrectly in the type-
10484 specific flag byte.
10486 Consolidated duplicate code within the address descriptor resource
10488 code, reducing overall subsystem code size.
10490 Fixed a fault when using the AML debugger "disassemble" command to
10491 disassemble individual control methods.
10493 Removed references to the "release_current" directory within the Unix
10496 Code and Data Size: The current and previous core subsystem library sizes
10497 are shown below. These are the code and data sizes for the acpica.lib
10498 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
10499 include any ACPI driver or OSPM code. The debug version of the code
10501 the debug output trace mechanism and has a much larger code and data
10503 Note that these values will vary depending on the efficiency of the
10505 and the compiler options used during generation.
10508 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10509 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10511 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10512 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10515 2) iASL Compiler/Disassembler:
10517 Implemented an error check for illegal duplicate values in the interrupt
10519 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
10522 Implemented error checking for the Irq() and IrqNoFlags() macros to
10524 too many values in the interrupt list (16 max) and invalid values in the
10525 list (range 0 - 15)
10527 The maximum length string literal within an ASL file is now restricted to
10528 200 characters as per the ACPI specification.
10530 Fixed a fault when using the -ln option (generate namespace listing).
10532 Implemented an error check to determine if a DescriptorName within a
10533 resource descriptor has already been used within the current scope.
10535 ----------------------------------------
10536 15 August 2005. Summary of changes for version 20050815:
10538 1) ACPI CA Core Subsystem:
10540 Implemented a full bytewise compare to determine if a table load request
10542 attempting to load a duplicate table. The compare is performed if the
10544 signatures and table lengths match. This will allow different tables with
10545 the same OEM Table ID and revision to be loaded - probably against the
10547 specification, but discovered in the field nonetheless.
10549 Added the changes.txt logfile to each of the zipped release packages.
10551 Code and Data Size: Current and previous core subsystem library sizes are
10552 shown below. These are the code and data sizes for the acpica.lib
10554 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10555 any ACPI driver or OSPM code. The debug version of the code includes the
10556 debug output trace mechanism and has a much larger code and data size.
10558 that these values will vary depending on the efficiency of the compiler
10560 the compiler options used during generation.
10563 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10564 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10566 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10567 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10570 2) iASL Compiler/Disassembler:
10572 Fixed a problem where incorrect AML code could be generated for Package
10573 objects if optimization is disabled (via the -oa switch).
10575 Fixed a problem with where incorrect AML code is generated for variable-
10576 length packages when the package length is not specified and the number
10578 initializer values is greater than 255.
10581 ----------------------------------------
10582 29 July 2005. Summary of changes for version 20050729:
10584 1) ACPI CA Core Subsystem:
10586 Implemented support to ignore an attempt to install/load a particular
10588 table more than once. Apparently there exists BIOS code that repeatedly
10589 attempts to load the same SSDT upon certain events. With assistance from
10590 Venkatesh Pallipadi.
10592 Restructured the main interface to the AML parser in order to correctly
10593 handle all exceptional conditions. This will prevent leakage of the
10595 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
10597 machines. With assistance from Alexey Starikovskiy.
10599 Support for "module level code" has been disabled in this version due to
10601 number of issues that have appeared on various machines. The support can
10603 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
10604 compilation. When the issues are fully resolved, the code will be enabled
10608 Modified the internal functions for debug print support to define the
10609 FunctionName parameter as a (const char *) for compatibility with
10611 built-in macros such as __FUNCTION__, etc.
10613 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
10615 Implemented support to display an object count summary for the AML
10617 commands Object and Methods.
10619 Code and Data Size: Current and previous core subsystem library sizes are
10620 shown below. These are the code and data sizes for the acpica.lib
10622 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10623 any ACPI driver or OSPM code. The debug version of the code includes the
10624 debug output trace mechanism and has a much larger code and data size.
10626 that these values will vary depending on the efficiency of the compiler
10628 the compiler options used during generation.
10631 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10632 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10634 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10635 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10638 2) iASL Compiler/Disassembler:
10640 Fixed a regression that appeared in the 20050708 version of the compiler
10641 where an error message was inadvertently emitted for invocations of the
10643 reserved control method.
10645 ----------------------------------------
10646 08 July 2005. Summary of changes for version 20050708:
10648 1) ACPI CA Core Subsystem:
10650 The use of the CPU stack in the debug version of the subsystem has been
10651 considerably reduced. Previously, a debug structure was declared in every
10652 function that used the debug macros. This structure has been removed in
10653 favor of declaring the individual elements as parameters to the debug
10654 functions. This reduces the cumulative stack use during nested execution
10656 ACPI function calls at the cost of a small increase in the code size of
10658 debug version of the subsystem. With assistance from Alexey Starikovskiy
10662 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
10663 headers to define a macro that will return the current function name at
10664 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
10666 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
10667 compiler-dependent header, the function name is saved on the CPU stack
10669 pointer per function.) This mechanism is used because apparently there
10670 exists no standard ANSI-C defined macro that that returns the function
10673 Redesigned and reimplemented the "Owner ID" mechanism used to track
10674 namespace objects created/deleted by ACPI tables and control method
10675 execution. A bitmap is now used to allocate and free the IDs, thus
10677 the wraparound problem present in the previous implementation. The size
10679 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
10682 Removed the UINT32_BIT and UINT16_BIT types that were used for the
10684 flag definitions within the headers for the predefined ACPI tables. These
10685 have been replaced by UINT8_BIT in order to increase the code portability
10687 the subsystem. If the use of UINT8 remains a problem, we may be forced to
10688 eliminate bitfields entirely because of a lack of portability.
10690 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
10692 is a frequently used function and this improvement increases the
10694 of the entire subsystem (Alexey Starikovskiy).
10696 Fixed several possible memory leaks and the inverse - premature object
10697 deletion (Alexey Starikovskiy).
10699 Code and Data Size: Current and previous core subsystem library sizes are
10700 shown below. These are the code and data sizes for the acpica.lib
10702 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10703 any ACPI driver or OSPM code. The debug version of the code includes the
10704 debug output trace mechanism and has a much larger code and data size.
10706 that these values will vary depending on the efficiency of the compiler
10708 the compiler options used during generation.
10711 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10712 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10714 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10715 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10717 ----------------------------------------
10718 24 June 2005. Summary of changes for version 20050624:
10720 1) ACPI CA Core Subsystem:
10722 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
10723 the host-defined cache object. This allows the OSL implementation to
10725 and type this object in any manner desired, simplifying the OSL
10726 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
10727 Linux, and should be defined in the OS-specific header file for other
10728 operating systems as required.
10730 Changed the interface to AcpiOsAcquireObject to directly return the
10731 requested object as the function return (instead of ACPI_STATUS.) This
10732 change was made for performance reasons, since this is the purpose of the
10733 interface in the first place. AcpiOsAcquireObject is now similar to the
10734 AcpiOsAllocate interface.
10736 Implemented a new AML debugger command named Businfo. This command
10738 information about all devices that have an associate _PRT object. The
10740 _HID, _UID, and _CID are displayed for these devices.
10742 Modified the initialization sequence in AcpiInitializeSubsystem to call
10744 OSL interface AcpiOslInitialize first, before any local initialization.
10746 change was required because the global initialization now calls OSL
10749 Enhanced the Dump command to display the entire contents of Package
10751 (including all sub-objects and their values.)
10753 Restructured the code base to split some files because of size and/or
10754 because the code logically belonged in a separate file. New files are
10756 below. All makefiles and project files included in the ACPI CA release
10759 utilities/utcache.c /* Local cache interfaces */
10760 utilities/utmutex.c /* Local mutex support */
10761 utilities/utstate.c /* State object support */
10762 interpreter/parser/psloop.c /* Main AML parse loop */
10764 Code and Data Size: Current and previous core subsystem library sizes are
10765 shown below. These are the code and data sizes for the acpica.lib
10767 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10768 any ACPI driver or OSPM code. The debug version of the code includes the
10769 debug output trace mechanism and has a much larger code and data size.
10771 that these values will vary depending on the efficiency of the compiler
10773 the compiler options used during generation.
10776 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10777 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10779 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10780 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10783 2) iASL Compiler/Disassembler:
10785 Fixed a regression introduced in version 20050513 where the use of a
10787 object within a Case() statement caused a compile time exception. The
10788 original behavior has been restored (a Match() operator is emitted.)
10790 ----------------------------------------
10791 17 June 2005. Summary of changes for version 20050617:
10793 1) ACPI CA Core Subsystem:
10795 Moved the object cache operations into the OS interface layer (OSL) to
10797 the host OS to handle these operations if desired (for example, the Linux
10798 OSL will invoke the slab allocator). This support is optional; the
10800 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
10802 code in the ACPI CA core. The new OSL interfaces are shown below. See
10803 utalloc.c for an example implementation, and acpiosxf.h for the exact
10804 interface definitions. With assistance from Alexey Starikovskiy.
10808 AcpiOsAcquireObject
10809 AcpiOsReleaseObject
10811 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
10813 and restore a flags parameter. This fits better with many OS lock models.
10814 Note: the current execution state (interrupt handler or not) is no longer
10815 passed to these interfaces. If necessary, the OSL must determine this
10817 by itself, a simple and fast operation. With assistance from Alexey
10820 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
10821 present if the revision of the RSDP was 2 or greater. According to the
10823 specification, the XSDT is optional in all cases, and the table manager
10824 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
10825 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
10829 Fixed an interpreter problem with the Mid() operator in the case of an
10831 string where the resulting output string is of zero length. It now
10833 returns a valid, null terminated string object instead of a string object
10834 with a null pointer.
10836 Fixed a problem with the control method argument handling to allow a
10838 to an Arg object that already contains an object of type Device. The
10840 object is now correctly overwritten. Previously, an error was returned.
10843 Enhanced the debugger Find command to emit object values in addition to
10845 found object pathnames. The output format is the same as the dump
10849 Enhanced the debugger Set command. It now has the ability to set the
10851 of any Named integer object in the namespace (Previously, only method
10853 and args could be set.)
10855 Code and Data Size: Current and previous core subsystem library sizes are
10856 shown below. These are the code and data sizes for the acpica.lib
10858 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10859 any ACPI driver or OSPM code. The debug version of the code includes the
10860 debug output trace mechanism and has a much larger code and data size.
10862 that these values will vary depending on the efficiency of the compiler
10864 the compiler options used during generation.
10867 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10868 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10870 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10871 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10874 2) iASL Compiler/Disassembler:
10876 Fixed a regression in the disassembler where if/else/while constructs
10878 output incorrectly. This problem was introduced in the previous release
10879 (20050526). This problem also affected the single-step disassembly in the
10882 Fixed a problem where compiling the reserved _OSI method would randomly
10884 rarely) produce compile errors.
10886 Enhanced the disassembler to emit compilable code in the face of
10888 AML resource descriptors. If the optional ResourceSourceIndex is present,
10889 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
10890 disassembly. Otherwise, the resulting code cannot be compiled without
10893 ----------------------------------------
10894 26 May 2005. Summary of changes for version 20050526:
10896 1) ACPI CA Core Subsystem:
10898 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
10899 the module level (not within a control method.) These opcodes are
10901 exactly once at the time the table is loaded. This type of code was legal
10903 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
10905 order to provide backwards compatibility with earlier BIOS
10907 This eliminates the "Encountered executable code at module level" warning
10908 that was previously generated upon detection of such code.
10910 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
10911 inadvertently be generated during the lookup of namespace objects in the
10912 second pass parse of ACPI tables and control methods. It appears that
10914 problem could occur during the resolution of forward references to
10918 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
10919 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
10920 allows the deadlock detection debug code to be compiled out in the normal
10921 case, improving mutex performance (and overall subsystem performance)
10924 Implemented a handful of miscellaneous fixes for possible memory leaks on
10925 error conditions and error handling control paths. These fixes were
10926 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
10928 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
10930 to prevent a fault in this error case.
10932 Code and Data Size: Current and previous core subsystem library sizes are
10933 shown below. These are the code and data sizes for the acpica.lib
10935 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10936 any ACPI driver or OSPM code. The debug version of the code includes the
10937 debug output trace mechanism and has a much larger code and data size.
10939 that these values will vary depending on the efficiency of the compiler
10941 the compiler options used during generation.
10944 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10945 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10947 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10948 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10951 2) iASL Compiler/Disassembler:
10953 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
10954 the module level (not within a control method.) These operators will be
10955 executed once at the time the table is loaded. This type of code was
10957 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
10958 compiler in order to provide backwards compatibility with earlier BIOS
10962 The ACPI integer width (specified via the table revision ID or the -r
10963 override, 32 or 64 bits) is now used internally during compile-time
10965 folding to ensure that constants are truncated to 32 bits if necessary.
10966 Previously, the revision ID value was only emitted in the AML table
10969 An error message is now generated for the Mutex and Method operators if
10971 SyncLevel parameter is outside the legal range of 0 through 15.
10973 Fixed a problem with the Method operator ParameterTypes list handling
10975 3.0). Previously, more than 2 types or 2 arguments generated a syntax
10977 The actual underlying implementation of method argument typechecking is
10978 still under development, however.
10980 ----------------------------------------
10981 13 May 2005. Summary of changes for version 20050513:
10983 1) ACPI CA Core Subsystem:
10985 Implemented support for PCI Express root bridges -- added support for
10987 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
10989 The interpreter now automatically truncates incoming 64-bit constants to
10991 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
10993 also affects the iASL compiler constant folding. (Note: as per below, the
10994 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
10996 Fixed a problem where string and buffer objects with "static" pointers
10997 (pointers to initialization data within an ACPI table) were not handled
10998 consistently. The internal object copy operation now always copies the
11000 to a newly allocated buffer, regardless of whether the source object is
11003 Fixed a problem with the FromBCD operator where an implicit result
11004 conversion was improperly performed while storing the result to the
11006 operand. Since this is an "explicit conversion" operator, the implicit
11007 conversion should never be performed on the output.
11009 Fixed a problem with the CopyObject operator where a copy to an existing
11010 named object did not always completely overwrite the existing object
11012 at name. Specifically, a buffer-to-buffer copy did not delete the
11016 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11018 structs for consistency.
11020 Code and Data Size: Current and previous core subsystem library sizes are
11021 shown below. These are the code and data sizes for the acpica.lib
11023 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11024 any ACPI driver or OSPM code. The debug version of the code includes the
11025 debug output trace mechanism and has a much larger code and data size.
11027 that these values will vary depending on the efficiency of the compiler
11029 the compiler options used during generation.
11032 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11033 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11034 Current Release: (Same sizes)
11035 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11036 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11039 2) iASL Compiler/Disassembler:
11041 The compiler now emits a warning if an attempt is made to generate a 64-
11043 integer constant from within a 32-bit ACPI table (Revision < 2). The
11045 is truncated to 32 bits.
11047 Fixed a problem with large package objects: if the static length of the
11048 package is greater than 255, the "variable length package" opcode is
11049 emitted. Previously, this caused an error. This requires an update to the
11050 ACPI spec, since it currently (incorrectly) states that packages larger
11052 255 elements are not allowed.
11054 The disassembler now correctly handles variable length packages and
11056 larger than 255 elements.
11058 ----------------------------------------
11059 08 April 2005. Summary of changes for version 20050408:
11061 1) ACPI CA Core Subsystem:
11063 Fixed three cases in the interpreter where an "index" argument to an ASL
11064 function was still (internally) 32 bits instead of the required 64 bits.
11065 This was the Index argument to the Index, Mid, and Match operators.
11067 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11069 not a POSIX-defined function and not present in most kernel-level C
11070 libraries. All references to the C library strupr function have been
11074 Completed the deployment of static functions/prototypes. All prototypes
11076 the static attribute have been moved from the headers to the owning C
11079 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11080 utility). This option allows the utility to extract individual ACPI
11082 from the output of AcpiDmp. It provides the same functionality of the
11083 acpixtract.pl perl script without the worry of setting the correct perl
11084 options. AcpiBin runs on Windows and has not yet been generated/validated
11086 the Linux/Unix environment (but should be soon).
11088 Updated and fixed the table dump option for AcpiBin (-d). This option
11089 converts a single ACPI table to a hex/ascii file, similar to the output
11093 Code and Data Size: Current and previous core subsystem library sizes are
11094 shown below. These are the code and data sizes for the acpica.lib
11096 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11097 any ACPI driver or OSPM code. The debug version of the code includes the
11098 debug output trace mechanism and has a much larger code and data size.
11100 that these values will vary depending on the efficiency of the compiler
11102 the compiler options used during generation.
11105 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11106 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11108 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11109 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11112 2) iASL Compiler/Disassembler:
11114 Disassembler fix: Added a check to ensure that the table length found in
11116 ACPI table header within the input file is not longer than the actual
11118 file size. This indicates some kind of file or table corruption.
11120 ----------------------------------------
11121 29 March 2005. Summary of changes for version 20050329:
11123 1) ACPI CA Core Subsystem:
11125 An error is now generated if an attempt is made to create a Buffer Field
11127 length zero (A CreateField with a length operand of zero.)
11129 The interpreter now issues a warning whenever executable code at the
11131 level is detected during ACPI table load. This will give some idea of the
11132 prevalence of this type of code.
11134 Implemented support for references to named objects (other than control
11135 methods) within package objects.
11137 Enhanced package object output for the debug object. Package objects are
11139 completely dumped, showing all elements.
11141 Enhanced miscellaneous object output for the debug object. Any object can
11142 now be written to the debug object (for example, a device object can be
11143 written, and the type of the object will be displayed.)
11145 The "static" qualifier has been added to all local functions across both
11147 core subsystem and the iASL compiler.
11149 The number of "long" lines (> 80 chars) within the source has been
11150 significantly reduced, by about 1/3.
11152 Cleaned up all header files to ensure that all CA/iASL functions are
11153 prototyped (even static functions) and the formatting is consistent.
11155 Two new header files have been added, acopcode.h and acnames.h.
11157 Removed several obsolete functions that were no longer used.
11159 Code and Data Size: Current and previous core subsystem library sizes are
11160 shown below. These are the code and data sizes for the acpica.lib
11162 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11163 any ACPI driver or OSPM code. The debug version of the code includes the
11164 debug output trace mechanism and has a much larger code and data size.
11166 that these values will vary depending on the efficiency of the compiler
11168 the compiler options used during generation.
11171 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11172 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11174 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11175 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11179 2) iASL Compiler/Disassembler:
11181 Fixed a problem with the resource descriptor generation/support. For the
11182 ResourceSourceIndex and the ResourceSource fields, both must be present,
11184 both must be not present - can't have one without the other.
11186 The compiler now returns non-zero from the main procedure if any errors
11188 occurred during the compilation.
11191 ----------------------------------------
11192 09 March 2005. Summary of changes for version 20050309:
11194 1) ACPI CA Core Subsystem:
11196 The string-to-buffer implicit conversion code has been modified again
11198 a change to the ACPI specification. In order to match the behavior of
11200 other major ACPI implementation, the target buffer is no longer truncated
11202 the source string is smaller than an existing target buffer. This change
11203 requires an update to the ACPI spec, and should eliminate the recent
11204 AE_AML_BUFFER_LIMIT issues.
11206 The "implicit return" support was rewritten to a new algorithm that
11208 the general case. Rather than attempt to determine when a method is about
11210 exit, the result of every ASL operator is saved momentarily until the
11212 next ASL operator is executed. Therefore, no matter how the method exits,
11213 there will always be a saved implicit return value. This feature is only
11214 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11216 AE_AML_NO_RETURN_VALUE errors when enabled.
11218 Implemented implicit conversion support for the predicate (operand) of
11220 If, Else, and While operators. String and Buffer arguments are
11222 converted to Integers.
11224 Changed the string-to-integer conversion behavior to match the new ACPI
11225 errata: "If no integer object exists, a new integer is created. The ASCII
11226 string is interpreted as a hexadecimal constant. Each string character is
11227 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11228 with the first character as the most significant digit, and ending with
11230 first non-hexadecimal character or end-of-string." This means that the
11232 non-hex character terminates the conversion and this is the code that was
11235 Fixed a problem where the ObjectType operator would fail (fault) when
11237 on an Index of a Package which pointed to a null package element. The
11238 operator now properly returns zero (Uninitialized) in this case.
11240 Fixed a problem where the While operator used excessive memory by not
11241 properly popping the result stack during execution. There was no memory
11243 after execution, however. (Code provided by Valery Podrezov.)
11245 Fixed a problem where references to control methods within Package
11247 caused the method to be invoked, instead of producing a reference object
11248 pointing to the method.
11250 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
11252 improve performance and reduce code size. (Code provided by Alexey
11255 Code and Data Size: Current and previous core subsystem library sizes are
11256 shown below. These are the code and data sizes for the acpica.lib
11258 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11259 any ACPI driver or OSPM code. The debug version of the code includes the
11260 debug output trace mechanism and has a much larger code and data size.
11262 that these values will vary depending on the efficiency of the compiler
11264 the compiler options used during generation.
11267 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11268 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11270 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11271 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11274 2) iASL Compiler/Disassembler:
11276 Fixed a problem with the Return operator with no arguments. Since the AML
11277 grammar for the byte encoding requires an operand for the Return opcode,
11279 compiler now emits a Return(Zero) for this case. An ACPI specification
11280 update has been written for this case.
11282 For tables other than the DSDT, namepath optimization is automatically
11283 disabled. This is because SSDTs can be loaded anywhere in the namespace,
11285 compiler has no knowledge of where, and thus cannot optimize namepaths.
11287 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
11288 inadvertently omitted from the ACPI specification, and will require an
11289 update to the spec.
11291 The source file scan for ASCII characters is now optional (-a). This
11293 was made because some vendors place non-ascii characters within comments.
11294 However, the scan is simply a brute-force byte compare to ensure all
11295 characters in the file are in the range 0x00 to 0x7F.
11297 Fixed a problem with the CondRefOf operator where the compiler was
11298 inappropriately checking for the existence of the target. Since the point
11300 the operator is to check for the existence of the target at run-time, the
11301 compiler no longer checks for the target existence.
11303 Fixed a problem where errors generated from the internal AML interpreter
11304 during constant folding were not handled properly, causing a fault.
11306 Fixed a problem with overly aggressive range checking for the Stall
11307 operator. The valid range (max 255) is now only checked if the operand is
11309 type Integer. All other operand types cannot be statically checked.
11311 Fixed a problem where control method references within the RefOf,
11313 and ObjectType operators were not treated properly. They are now treated
11315 actual references, not method invocations.
11317 Fixed and enhanced the "list namespace" option (-ln). This option was
11319 a number of releases ago.
11321 Improved error handling for the Field, IndexField, and BankField
11323 The compiler now cleanly reports and recovers from errors in the field
11324 component (FieldUnit) list.
11326 Fixed a disassembler problem where the optional ResourceDescriptor fields
11327 TRS and TTP were not always handled correctly.
11329 Disassembler - Comments in output now use "//" instead of "/*"
11331 ----------------------------------------
11332 28 February 2005. Summary of changes for version 20050228:
11334 1) ACPI CA Core Subsystem:
11336 Fixed a problem where the result of an Index() operator (an object
11337 reference) must increment the reference count on the target object for
11339 life of the object reference.
11341 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
11342 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
11344 resource descriptors.
11346 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
11347 Space Descriptor" string, indicating interpreter support for the
11351 Implemented header support for the new ACPI 3.0 FADT flag bits.
11353 Implemented header support for the new ACPI 3.0 PCI Express bits for the
11355 status/enable registers.
11357 Updated header support for the MADT processor local Apic struct and MADT
11358 platform interrupt source struct for new ACPI 3.0 fields.
11360 Implemented header support for the SRAT and SLIT ACPI tables.
11362 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
11366 Code and Data Size: Current and previous core subsystem library sizes are
11367 shown below. These are the code and data sizes for the acpica.lib
11369 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11370 any ACPI driver or OSPM code. The debug version of the code includes the
11371 debug output trace mechanism and has a much larger code and data size.
11373 that these values will vary depending on the efficiency of the compiler
11375 the compiler options used during generation.
11378 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11379 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11381 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11382 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11385 2) iASL Compiler/Disassembler:
11387 Fixed a problem with the internal 64-bit String-to-integer conversion
11389 strings less than two characters long.
11391 Fixed a problem with constant folding where the result of the Index()
11392 operator can not be considered a constant. This means that Index() cannot
11394 a type3 opcode and this will require an update to the ACPI specification.
11396 Disassembler: Implemented support for the TTP, MTP, and TRS resource
11397 descriptor fields. These fields were inadvertently ignored and not output
11399 the disassembly of the resource descriptor.
11402 ----------------------------------------
11403 11 February 2005. Summary of changes for version 20050211:
11405 1) ACPI CA Core Subsystem:
11407 Implemented ACPI 3.0 support for implicit conversion within the Match()
11408 operator. MatchObjects can now be of type integer, buffer, or string
11410 of just type integer. Package elements are implicitly converted to the
11412 of the MatchObject. This change aligns the behavior of Match() with the
11413 behavior of the other logical operators (LLess(), etc.) It also requires
11415 errata change to the ACPI specification as this support was intended for
11416 ACPI 3.0, but was inadvertently omitted.
11418 Fixed a problem with the internal implicit "to buffer" conversion.
11420 that are converted to buffers will cause buffer truncation if the string
11422 smaller than the target buffer. Integers that are converted to buffers
11424 not cause buffer truncation, only zero extension (both as per the ACPI
11425 spec.) The problem was introduced when code was added to truncate the
11426 buffer, but this should not be performed in all cases, only the string
11429 Fixed a problem with the Buffer and Package operators where the
11431 would get confused if two such operators were used as operands to an ASL
11432 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
11433 stack was not being popped after the execution of these operators,
11435 in an AE_NO_RETURN_VALUE exception.
11437 Fixed a problem with constructs of the form Store(Index(...),...). The
11438 reference object returned from Index was inadvertently resolved to an
11440 value. This problem was introduced in version 20050114 when the behavior
11442 Store() was modified to restrict the object types that can be used as the
11443 source operand (to match the ACPI specification.)
11445 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
11447 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
11449 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
11451 Code and Data Size: Current and previous core subsystem library sizes are
11452 shown below. These are the code and data sizes for the acpica.lib
11454 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11455 any ACPI driver or OSPM code. The debug version of the code includes the
11456 debug output trace mechanism and has a much larger code and data size.
11458 that these values will vary depending on the efficiency of the compiler
11460 the compiler options used during generation.
11463 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11464 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11466 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11467 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11470 2) iASL Compiler/Disassembler:
11472 Fixed a code generation problem in the constant folding optimization code
11473 where incorrect code was generated if a constant was reduced to a buffer
11474 object (i.e., a reduced type 5 opcode.)
11476 Fixed a typechecking problem for the ToBuffer operator. Caused by an
11477 incorrect return type in the internal opcode information table.
11479 ----------------------------------------
11480 25 January 2005. Summary of changes for version 20050125:
11482 1) ACPI CA Core Subsystem:
11484 Fixed a recently introduced problem with the Global Lock where the
11485 underlying semaphore was not created. This problem was introduced in
11486 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
11487 Acquire() operation on _GL.
11489 The local object cache is now optional, and is disabled by default. Both
11490 AcpiExec and the iASL compiler enable the cache because they run in user
11491 mode and this enhances their performance. #define
11492 ACPI_ENABLE_OBJECT_CACHE
11493 to enable the local cache.
11495 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
11497 optional "implicit return" support where an error was returned if no
11499 object was expected, but one was implicitly returned. AE_OK is now
11501 in this case and the implicitly returned object is deleted.
11502 AcpiUtEvaluateObject is only occasionally used, and only to execute
11504 methods such as _STA and _INI where the return type is known up front.
11506 Fixed a few issues with the internal convert-to-integer code. It now
11508 an error if an attempt is made to convert a null string, a string of only
11509 blanks/tabs, or a zero-length buffer. This affects both implicit
11511 and explicit conversion via the ToInteger() operator.
11513 The internal debug code in AcpiUtAcquireMutex has been commented out. It
11515 not needed for normal operation and should increase the performance of
11517 entire subsystem. The code remains in case it is needed for debug
11521 The AcpiExec source and makefile are included in the Unix/Linux package
11525 Code and Data Size: Current and previous core subsystem library sizes are
11526 shown below. These are the code and data sizes for the acpica.lib
11528 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11529 any ACPI driver or OSPM code. The debug version of the code includes the
11530 debug output trace mechanism and has a much larger code and data size.
11532 that these values will vary depending on the efficiency of the compiler
11534 the compiler options used during generation.
11537 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11538 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11540 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11541 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11543 2) iASL Compiler/Disassembler:
11545 Switch/Case support: A warning is now issued if the type of the Switch
11547 cannot be determined at compile time. For example, Switch(Arg0) will
11548 generate the warning, and the type is assumed to be an integer. As per
11550 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
11554 Switch/Case support: Implemented support for buffer and string objects as
11555 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
11556 buffers and strings.
11558 Switch/Case support: The emitted code for the LEqual() comparisons now
11560 the switch value as the first operand, not the second. The case value is
11562 the second operand, and this allows the case value to be implicitly
11563 converted to the type of the switch value, not the other way around.
11565 Switch/Case support: Temporary variables are now emitted immediately
11567 the control method, not at the global level. This means that there are
11569 36 temps available per-method, not 36 temps per-module as was the case
11571 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
11573 ----------------------------------------
11574 14 January 2005. Summary of changes for version 20050114:
11576 Added 2005 copyright to all module headers. This affects every module in
11577 the core subsystem, iASL compiler, and the utilities.
11579 1) ACPI CA Core Subsystem:
11581 Fixed an issue with the String-to-Buffer conversion code where the string
11582 null terminator was not included in the buffer after conversion, but
11584 is existing ASL that assumes the string null terminator is included. This
11586 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
11587 introduced in the previous version when the code was updated to correctly
11588 set the converted buffer size as per the ACPI specification. The ACPI
11590 is ambiguous and will be updated to specify that the null terminator must
11592 included in the converted buffer. This also affects the ToBuffer() ASL
11595 Fixed a problem with the Mid() ASL/AML operator where it did not work
11596 correctly on Buffer objects. Newly created sub-buffers were not being
11601 Fixed a problem in AcpiTbFindTable where incorrect string compares were
11602 performed on the OemId and OemTableId table header fields. These fields
11604 not null terminated, so strncmp is now used instead of strcmp.
11606 Implemented a restriction on the Store() ASL/AML operator to align the
11607 behavior with the ACPI specification. Previously, any object could be
11609 as the source operand. Now, the only objects that may be used are
11611 Buffers, Strings, Packages, Object References, and DDB Handles. If
11612 necessary, the original behavior can be restored by enabling the
11613 EnableInterpreterSlack flag.
11615 Enhanced the optional "implicit return" support to allow an implicit
11617 value from methods that are invoked externally via the AcpiEvaluateObject
11618 interface. This enables implicit returns from the _STA and _INI methods,
11621 Changed the Revision() ASL/AML operator to return the current version of
11623 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
11625 the supported ACPI version (This is the function of the _REV method).
11627 Updated the _REV predefined method to return the currently supported
11631 Implemented batch mode option for the AcpiExec utility (-b).
11633 Code and Data Size: Current and previous core subsystem library sizes are
11634 shown below. These are the code and data sizes for the acpica.lib
11636 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11637 any ACPI driver or OSPM code. The debug version of the code includes the
11638 debug output trace mechanism and has a much larger code and data size.
11640 that these values will vary depending on the efficiency of the compiler
11642 the compiler options used during generation.
11645 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11646 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11648 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11649 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11651 ----------------------------------------
11652 10 December 2004. Summary of changes for version 20041210:
11654 ACPI 3.0 support is nearing completion in both the iASL compiler and the
11655 ACPI CA core subsystem.
11657 1) ACPI CA Core Subsystem:
11659 Fixed a problem in the ToDecimalString operator where the resulting
11661 length was incorrectly calculated. The length is now calculated exactly,
11662 eliminating incorrect AE_STRING_LIMIT exceptions.
11664 Fixed a problem in the ToHexString operator to allow a maximum 200
11666 string to be produced.
11668 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
11670 routine where the length of the resulting buffer was not truncated to the
11671 new size (if the target buffer already existed).
11673 Code and Data Size: Current and previous core subsystem library sizes are
11674 shown below. These are the code and data sizes for the acpica.lib
11676 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11677 any ACPI driver or OSPM code. The debug version of the code includes the
11678 debug output trace mechanism and has a much larger code and data size.
11680 that these values will vary depending on the efficiency of the compiler
11682 the compiler options used during generation.
11685 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11686 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11688 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11689 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11692 2) iASL Compiler/Disassembler:
11694 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
11695 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
11696 Includes support in the disassembler.
11698 Implemented support for the new (ACPI 3.0) parameter to the Register
11702 Fixed a problem where the _HE resource name for the Interrupt macro was
11703 referencing bit 0 instead of bit 1.
11705 Implemented check for maximum 255 interrupts in the Interrupt macro.
11707 Fixed a problem with the predefined resource descriptor names where
11708 incorrect AML code was generated if the offset within the resource buffer
11709 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
11710 but did not update the surrounding package lengths.
11712 Changes to the Dma macro: All channels within the channel list must be
11714 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
11715 optional (default is BusMaster).
11717 Implemented check for maximum 7 data bytes for the VendorShort macro.
11719 The ReadWrite parameter is now optional for the Memory32 and similar
11722 ----------------------------------------
11723 03 December 2004. Summary of changes for version 20041203:
11725 1) ACPI CA Core Subsystem:
11727 The low-level field insertion/extraction code (exfldio) has been
11729 rewritten to eliminate unnecessary complexity, bugs, and boundary
11732 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
11734 operators where the input operand could be inadvertently deleted if no
11735 conversion was necessary (e.g., if the input to ToInteger was an Integer
11738 Fixed a problem with the ToDecimalString and ToHexString where an
11740 exception code was returned if the resulting string would be > 200 chars.
11741 AE_STRING_LIMIT is now returned.
11743 Fixed a problem with the Concatenate operator where AE_OK was always
11744 returned, even if the operation failed.
11746 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
11747 semaphores to be allocated.
11749 Code and Data Size: Current and previous core subsystem library sizes are
11750 shown below. These are the code and data sizes for the acpica.lib
11752 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11753 any ACPI driver or OSPM code. The debug version of the code includes the
11754 debug output trace mechanism and has a much larger code and data size.
11756 that these values will vary depending on the efficiency of the compiler
11758 the compiler options used during generation.
11761 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11762 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11764 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11765 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11768 2) iASL Compiler/Disassembler:
11770 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
11771 recently introduced in 20041119.
11773 Fixed a problem with the ToUUID macro where the upper nybble of each
11775 byte was inadvertently set to zero.
11777 ----------------------------------------
11778 19 November 2004. Summary of changes for version 20041119:
11780 1) ACPI CA Core Subsystem:
11782 Fixed a problem in the internal ConvertToInteger routine where new
11784 were not truncated to 32 bits for 32-bit ACPI tables. This routine
11786 buffers and strings to integers.
11788 Implemented support to store a value to an Index() on a String object.
11790 is an ACPI 2.0 feature that had not yet been implemented.
11792 Implemented new behavior for storing objects to individual package
11794 (via the Index() operator). The previous behavior was to invoke the
11796 conversion rules if an object was already present at the index. The new
11797 behavior is to simply delete any existing object and directly store the
11799 object. Although the ACPI specification seems unclear on this subject,
11801 ACPI implementations behave in this manner. (This is the root of the
11802 AE_BAD_HEX_CONSTANT issue.)
11804 Modified the RSDP memory scan mechanism to support the extended checksum
11806 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
11807 RSDP signature is found with a valid checksum.
11809 Code and Data Size: Current and previous core subsystem library sizes are
11810 shown below. These are the code and data sizes for the acpica.lib
11812 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11813 any ACPI driver or OSPM code. The debug version of the code includes the
11814 debug output trace mechanism and has a much larger code and data size.
11816 that these values will vary depending on the efficiency of the compiler
11818 the compiler options used during generation.
11821 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11822 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11824 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11825 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11828 2) iASL Compiler/Disassembler:
11830 Fixed a missing semicolon in the aslcompiler.y file.
11832 ----------------------------------------
11833 05 November 2004. Summary of changes for version 20041105:
11835 1) ACPI CA Core Subsystem:
11837 Implemented support for FADT revision 2. This was an interim table
11839 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
11841 Implemented optional support to allow uninitialized LocalX and ArgX
11842 variables in a control method. The variables are initialized to an
11844 object with a value of zero. This support is enabled by setting the
11845 AcpiGbl_EnableInterpreterSlack flag to TRUE.
11847 Implemented support for Integer objects for the SizeOf operator. Either
11849 or 8 is returned, depending on the current integer size (32-bit or 64-
11851 depending on the parent table revision).
11853 Fixed a problem in the implementation of the SizeOf and ObjectType
11855 where the operand was resolved to a value too early, causing incorrect
11856 return values for some objects.
11858 Fixed some possible memory leaks during exceptional conditions.
11860 Code and Data Size: Current and previous core subsystem library sizes are
11861 shown below. These are the code and data sizes for the acpica.lib
11863 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11864 any ACPI driver or OSPM code. The debug version of the code includes the
11865 debug output trace mechanism and has a much larger code and data size.
11867 that these values will vary depending on the efficiency of the compiler
11869 the compiler options used during generation.
11872 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11873 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11875 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11876 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11879 2) iASL Compiler/Disassembler:
11881 Implemented support for all ACPI 3.0 reserved names and methods.
11883 Implemented all ACPI 3.0 grammar elements in the front-end, including
11884 support for semicolons.
11886 Implemented the ACPI 3.0 Function() and ToUUID() macros
11888 Fixed a problem in the disassembler where a Scope() operator would not be
11889 emitted properly if the target of the scope was in another table.
11891 ----------------------------------------
11892 15 October 2004. Summary of changes for version 20041015:
11894 Note: ACPI CA is currently undergoing an in-depth and complete formal
11895 evaluation to test/verify the following areas. Other suggestions are
11896 welcome. This will result in an increase in the frequency of releases and
11897 the number of bug fixes in the next few months.
11898 - Functional tests for all ASL/AML operators
11899 - All implicit/explicit type conversions
11900 - Bit fields and operation regions
11901 - 64-bit math support and 32-bit-only "truncated" math support
11902 - Exceptional conditions, both compiler and interpreter
11903 - Dynamic object deletion and memory leaks
11904 - ACPI 3.0 support when implemented
11905 - External interfaces to the ACPI subsystem
11908 1) ACPI CA Core Subsystem:
11910 Fixed two alignment issues on 64-bit platforms - within debug statements
11912 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
11914 field within the non-aligned ACPI generic address structure.
11916 Fixed a problem in the Increment and Decrement operators where incorrect
11917 operand resolution could result in the inadvertent modification of the
11918 original integer when the integer is passed into another method as an
11919 argument and the arg is then incremented/decremented.
11921 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
11923 BCD number were truncated during conversion.
11925 Fixed a problem in the ToDecimal operator where the length of the
11927 string could be set incorrectly too long if the input operand was a
11931 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
11933 within a buffer would prematurely terminate a compare between buffer
11936 Added a check for string overflow (>200 characters as per the ACPI
11937 specification) during the Concatenate operator with two string operands.
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: 77.8K Code, 11.5K Data, 89.3K Total
11952 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11954 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11955 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11959 2) iASL Compiler/Disassembler:
11961 Allow the use of the ObjectType operator on uninitialized Locals and Args
11962 (returns 0 as per the ACPI specification).
11964 Fixed a problem where the compiler would fault if there was a syntax
11966 in the FieldName of all of the various CreateXXXField operators.
11968 Disallow the use of lower case letters within the EISAID macro, as per
11970 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
11972 U is an uppercase letter and N is a hex digit.
11975 ----------------------------------------
11976 06 October 2004. Summary of changes for version 20041006:
11978 1) ACPI CA Core Subsystem:
11980 Implemented support for the ACPI 3.0 Timer operator. This ASL function
11981 implements a 64-bit timer with 100 nanosecond granularity.
11983 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
11984 implement the ACPI 3.0 Timer operator. This allows the host OS to
11986 the timer with the best clock available. Also, it keeps the core
11988 out of the clock handling business, since the host OS (usually) performs
11991 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
11992 functions use a 64-bit address which is part of the packed ACPI Generic
11993 Address Structure. Since the structure is non-aligned, the alignment
11995 are now used to extract the address to a local variable before use.
11997 Fixed a problem where the ToInteger operator assumed all input strings
11999 hexadecimal. The operator now handles both decimal strings and hex
12001 (prefixed with "0x").
12003 Fixed a problem where the string length in the string object created as a
12004 result of the internal ConvertToString procedure could be incorrect. This
12005 potentially affected all implicit conversions and also the
12007 and ToHexString operators.
12009 Fixed two problems in the ToString operator. If the length parameter was
12010 zero, an incorrect string object was created and the value of the input
12011 length parameter was inadvertently changed from zero to Ones.
12013 Fixed a problem where the optional ResourceSource string in the
12015 resource macro was ignored.
12017 Simplified the interfaces to the internal division functions, reducing
12019 size and complexity.
12021 Code and Data Size: Current and previous core subsystem library sizes are
12022 shown below. These are the code and data sizes for the acpica.lib
12024 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12025 any ACPI driver or OSPM code. The debug version of the code includes the
12026 debug output trace mechanism and has a much larger code and data size.
12028 that these values will vary depending on the efficiency of the compiler
12030 the compiler options used during generation.
12033 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12034 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12036 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12037 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12040 2) iASL Compiler/Disassembler:
12042 Implemented support for the ACPI 3.0 Timer operator.
12044 Fixed a problem where the Default() operator was inadvertently ignored in
12046 Switch/Case block. This was a problem in the translation of the Switch
12047 statement to If...Else pairs.
12049 Added support to allow a standalone Return operator, with no parentheses
12053 Fixed a problem with code generation for the ElseIf operator where the
12054 translated Else...If parse tree was improperly constructed leading to the
12057 ----------------------------------------
12058 22 September 2004. Summary of changes for version 20040922:
12060 1) ACPI CA Core Subsystem:
12062 Fixed a problem with the implementation of the LNot() operator where
12064 was not returned for the TRUE case. Changed the code to return Ones
12066 of (!Arg) which was usually 1. This change affects iASL constant folding
12068 this operator also.
12070 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12072 initialized properly -- Now zero the entire buffer in this case where the
12073 buffer already exists.
12075 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12076 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12077 related code considerably. This will require changes/updates to all OS
12078 interface layers (OSLs.)
12080 Implemented a new external interface, AcpiInstallExceptionHandler, to
12082 a system exception handler to be installed. This handler is invoked upon
12084 run-time exception that occurs during control method execution.
12086 Added support for the DSDT in AcpiTbFindTable. This allows the
12087 DataTableRegion() operator to access the local copy of the DSDT.
12089 Code and Data Size: Current and previous core subsystem library sizes are
12090 shown below. These are the code and data sizes for the acpica.lib
12092 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12093 any ACPI driver or OSPM code. The debug version of the code includes the
12094 debug output trace mechanism and has a much larger code and data size.
12096 that these values will vary depending on the efficiency of the compiler
12098 the compiler options used during generation.
12101 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12102 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12104 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12105 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12108 2) iASL Compiler/Disassembler:
12110 Fixed a problem with constant folding and the LNot operator. LNot was
12111 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12113 could result in the generation of an incorrect folded/reduced constant.
12115 End-Of-File is now allowed within a "//"-style comment. A parse error no
12116 longer occurs if such a comment is at the very end of the input ASL
12120 Implemented the "-r" option to override the Revision in the table header.
12121 The initial use of this option will be to simplify the evaluation of the
12123 interpreter by allowing a single ASL source module to be compiled for
12125 32-bit or 64-bit integers.
12128 ----------------------------------------
12129 27 August 2004. Summary of changes for version 20040827:
12131 1) ACPI CA Core Subsystem:
12133 - Implemented support for implicit object conversion in the non-numeric
12134 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12136 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12137 the second operand is implicitly converted on the fly to match the type
12139 the first operand. For example:
12141 LEqual (Source1, Source2)
12143 Source1 and Source2 must each evaluate to an integer, a string, or a
12145 The data type of Source1 dictates the required type of Source2. Source2
12147 implicitly converted if necessary to match the type of Source1.
12149 - Updated and corrected the behavior of the string conversion support.
12151 rules concerning conversion of buffers to strings (according to the ACPI
12152 specification) are as follows:
12154 ToDecimalString - explicit byte-wise conversion of buffer to string of
12155 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12157 conversion of buffer to string of hex values (0-FF) separated by commas.
12158 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12160 copy with no transform except NULL terminated. Any other implicit buffer-
12162 string conversion - byte-wise conversion of buffer to string of hex
12164 (0-FF) separated by spaces.
12166 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12168 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12170 one byte too short in the case of a node in the root scope. This could
12171 cause a fault during debug output.
12173 - Code and Data Size: Current and previous core subsystem library sizes
12175 shown below. These are the code and data sizes for the acpica.lib
12177 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12178 any ACPI driver or OSPM code. The debug version of the code includes the
12179 debug output trace mechanism and has a much larger code and data size.
12181 that these values will vary depending on the efficiency of the compiler
12183 the compiler options used during generation.
12186 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12187 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12189 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12190 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12193 2) iASL Compiler/Disassembler:
12195 - Fixed a Linux generation error.
12198 ----------------------------------------
12199 16 August 2004. Summary of changes for version 20040816:
12201 1) ACPI CA Core Subsystem:
12203 Designed and implemented support within the AML interpreter for the so-
12204 called "implicit return". This support returns the result of the last
12206 operation within a control method, in the absence of an explicit Return()
12207 operator. A few machines depend on this behavior, even though it is not
12208 explicitly supported by the ASL language. It is optional support that
12210 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12212 Removed support for the PCI_Config address space from the internal low
12214 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12215 support was not used internally, and would not work correctly anyway
12217 the PCI bus number and segment number were not supported. There are
12218 separate interfaces for PCI configuration space access because of the
12222 Code and Data Size: Current and previous core subsystem library sizes are
12223 shown below. These are the code and data sizes for the acpica.lib
12225 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12226 any ACPI driver or OSPM code. The debug version of the code includes the
12227 debug output trace mechanism and has a much larger code and data size.
12229 that these values will vary depending on the efficiency of the compiler
12231 the compiler options used during generation.
12234 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12235 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12237 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12238 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12241 2) iASL Compiler/Disassembler:
12243 Fixed a problem where constants in ASL expressions at the root level (not
12244 within a control method) could be inadvertently truncated during code
12245 generation. This problem was introduced in the 20040715 release.
12248 ----------------------------------------
12249 15 July 2004. Summary of changes for version 20040715:
12251 1) ACPI CA Core Subsystem:
12253 Restructured the internal HW GPE interfaces to pass/track the current
12255 of interrupts (enabled/disabled) in order to avoid possible deadlock and
12256 increase flexibility of the interfaces.
12258 Implemented a "lexicographical compare" for String and Buffer objects
12260 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
12262 as per further clarification to the ACPI specification. Behavior is
12264 to C library "strcmp".
12266 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
12267 external function. In the 32-bit non-debug case, the stack use has been
12268 reduced from 168 bytes to 32 bytes.
12270 Deployed a new run-time configuration flag,
12271 AcpiGbl_EnableInterpreterSlack,
12272 whose purpose is to allow the AML interpreter to forgive certain bad AML
12273 constructs. Default setting is FALSE.
12275 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
12277 support code. If enabled, it allows field access to go beyond the end of
12279 region definition if the field is within the region length rounded up to
12281 next access width boundary (a common coding error.)
12283 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
12284 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
12286 symbols are lowercased by the latest version of the AcpiSrc tool.
12288 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
12289 rename "Register" to simply "Reg" to prevent certain compilers from
12292 Code and Data Size: Current and previous core subsystem library sizes are
12293 shown below. These are the code and data sizes for the acpica.lib
12295 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12296 any ACPI driver or OSPM code. The debug version of the code includes the
12297 debug output trace mechanism and has a much larger code and data size.
12299 that these values will vary depending on the efficiency of the compiler
12301 the compiler options used during generation.
12304 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12305 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12307 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12308 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12311 2) iASL Compiler/Disassembler:
12313 Implemented full support for Package objects within the Case() operator.
12314 Note: The Break() operator is currently not supported within Case blocks
12315 (TermLists) as there is some question about backward compatibility with
12320 Fixed a problem where complex terms were not supported properly within
12324 Eliminated extraneous warning for compiler-emitted reserved names of the
12325 form "_T_x". (Used in Switch/Case operators.)
12327 Eliminated optimization messages for "_T_x" objects and small constants
12328 within the DefinitionBlock operator.
12331 ----------------------------------------
12332 15 June 2004. Summary of changes for version 20040615:
12334 1) ACPI CA Core Subsystem:
12336 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12338 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12341 All directory names in the entire source package are lower case, as they
12342 were in earlier releases.
12344 Implemented "Disassemble" command in the AML debugger that will
12346 a single control method.
12348 Code and Data Size: Current and previous core subsystem library sizes are
12349 shown below. These are the code and data sizes for the acpica.lib
12351 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12352 any ACPI driver or OSPM code. The debug version of the code includes the
12353 debug output trace mechanism and has a much larger code and data size.
12355 that these values will vary depending on the efficiency of the compiler
12357 the compiler options used during generation.
12360 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12361 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12364 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12365 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12368 2) iASL Compiler/Disassembler:
12370 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12372 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12375 All directory names in the entire source package are lower case, as they
12376 were in earlier releases.
12378 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
12381 Fixed an issue with the Windows version of the compiler where later
12383 of Windows place the FADT in the registry under the name "FADT" and not
12384 "FACP" as earlier versions did. This applies when using the -g or -
12385 d<nofilename> options. The compiler now looks for both strings as
12388 Fixed a problem with compiler namepath optimization where a namepath
12390 the Scope() operator could not be optimized if the namepath was a subpath
12392 the current scope path.
12394 ----------------------------------------
12395 27 May 2004. Summary of changes for version 20040527:
12397 1) ACPI CA Core Subsystem:
12399 Completed a new design and implementation for EBDA (Extended BIOS Data
12401 support in the RSDP scan code. The original code improperly scanned for
12403 EBDA by simply scanning from memory location 0 to 0x400. The correct
12405 is to first obtain the EBDA pointer from within the BIOS data area, then
12406 scan 1K of memory starting at the EBDA pointer. There appear to be few
12408 any machines that place the RSDP in the EBDA, however.
12410 Integrated a fix for a possible fault during evaluation of BufferField
12411 arguments. Obsolete code that was causing the problem was removed.
12413 Found and fixed a problem in the Field Support Code where data could be
12414 corrupted on a bit field read that starts on an aligned boundary but does
12415 not end on an aligned boundary. Merged the read/write "datum length"
12416 calculation code into a common procedure.
12418 Rolled in a couple of changes to the FreeBSD-specific header.
12421 Code and Data Size: Current and previous core subsystem library sizes are
12422 shown below. These are the code and data sizes for the acpica.lib
12424 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12425 any ACPI driver or OSPM code. The debug version of the code includes the
12426 debug output trace mechanism and has a much larger code and data size.
12428 that these values will vary depending on the efficiency of the compiler
12430 the compiler options used during generation.
12433 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12434 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12436 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12437 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12440 2) iASL Compiler/Disassembler:
12442 Fixed a generation warning produced by some overly-verbose compilers for
12446 ----------------------------------------
12447 14 May 2004. Summary of changes for version 20040514:
12449 1) ACPI CA Core Subsystem:
12451 Fixed a problem where hardware GPE enable bits sometimes not set properly
12452 during and after GPE method execution. Result of 04/27 changes.
12454 Removed extra "clear all GPEs" when sleeping/waking.
12456 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
12457 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
12459 the new AcpiEv* calls as appropriate.
12461 ACPI_OS_NAME was removed from the OS-specific headers. The default name
12463 now "Microsoft Windows NT" for maximum compatibility. However this can
12465 changed by modifying the acconfig.h file.
12467 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
12468 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
12470 Run _INI methods on ThermalZone objects. This is against the ACPI
12471 specification, but there is apparently ASL code in the field that has
12473 _INI methods, and apparently "other" AML interpreters execute them.
12475 Performed a full 16/32/64 bit lint that resulted in some small changes.
12477 Added a sleep simulation command to the AML debugger to test sleep code.
12479 Code and Data Size: Current and previous core subsystem library sizes are
12480 shown below. These are the code and data sizes for the acpica.lib
12482 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12483 any ACPI driver or OSPM code. The debug version of the code includes the
12484 debug output trace mechanism and has a much larger code and data size.
12486 that these values will vary depending on the efficiency of the compiler
12488 the compiler options used during generation.
12491 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12492 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12494 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12495 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12497 ----------------------------------------
12498 27 April 2004. Summary of changes for version 20040427:
12500 1) ACPI CA Core Subsystem:
12502 Completed a major overhaul of the GPE handling within ACPI CA. There are
12503 now three types of GPEs: wake-only, runtime-only, and combination
12505 The only GPEs allowed to be combination wake/run are for button-style
12506 devices such as a control-method power button, control-method sleep
12508 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
12510 referenced by any _PRW methods are marked for "runtime" and hardware
12511 enabled. Any GPE that is referenced by a _PRW method is marked for
12513 (and disabled at runtime). However, at sleep time, only those GPEs that
12514 have been specifically enabled for wake via the AcpiEnableGpe interface
12516 actually be hardware enabled.
12518 A new external interface has been added, AcpiSetGpeType(), that is meant
12520 be used by device drivers to force a GPE to a particular type. It will
12522 especially useful for the drivers for the button devices mentioned above.
12524 Completed restructuring of the ACPI CA initialization sequence so that
12525 default operation region handlers are installed before GPEs are
12527 and the _PRW methods are executed. This will prevent errors when the
12529 methods attempt to access system memory or I/O space.
12531 GPE enable/disable no longer reads the GPE enable register. We now keep
12533 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
12534 thus no longer depend on the hardware to maintain these bits.
12536 Always clear the wake status and fixed/GPE status bits before sleep, even
12539 Improved the AML debugger output for displaying the GPE blocks and their
12542 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
12546 Fixed a problem where the physical address was incorrectly calculated
12548 the Load() operator was used to directly load from an Operation Region
12550 loading from a Field object.) Also added check for minimum table length
12554 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
12557 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
12558 consistency with the other fields returned.
12560 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
12561 structure for each GPE in the system, so the size of this structure is
12564 CPU stack requirement reduction: Cleaned up the method execution and
12566 evaluation paths so that now a parameter structure is passed, instead of
12567 copying the various method parameters over and over again.
12569 In evregion.c: Correctly exit and reenter the interpreter region if and
12570 only if dispatching an operation region request to a user-installed
12572 Do not exit/reenter when dispatching to a default handler (e.g., default
12573 system memory or I/O handlers)
12576 Notes for updating drivers for the new GPE support. The following
12578 must be made to ACPI-related device drivers that are attached to one or
12580 GPEs: (This information will be added to the ACPI CA Programmer
12583 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
12585 explicitly call AcpiEnableGpe.
12586 2) There is a new interface called AcpiSetGpeType. This should be called
12587 before enabling the GPE. Also, this interface will automatically disable
12588 the GPE if it is currently enabled.
12589 3) AcpiEnableGpe no longer supports a GPE type flag.
12591 Specific drivers that must be changed:
12593 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
12594 AeGpeHandler, NULL);
12595 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
12596 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
12598 2) Button Drivers (Power, Lid, Sleep):
12599 Run _PRW method under parent device
12600 If _PRW exists: /* This is a control-method button */
12601 Extract GPE number and possibly GpeDevice
12602 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
12603 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
12605 For all other devices that have _PRWs, we automatically set the GPE type
12607 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
12609 must be done on a selective basis, usually requiring some kind of user
12611 to allow the user to pick the wake devices.
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: 77.0K Code, 11.4K Data, 88.4K Total
12627 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12630 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12631 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12635 ----------------------------------------
12636 02 April 2004. Summary of changes for version 20040402:
12638 1) ACPI CA Core Subsystem:
12640 Fixed an interpreter problem where an indirect store through an ArgX
12641 parameter was incorrectly applying the "implicit conversion rules" during
12642 the store. From the ACPI specification: "If the target is a method local
12644 argument (LocalX or ArgX), no conversion is performed and the result is
12645 stored directly to the target". The new behavior is to disable implicit
12646 conversion during ALL stores to an ArgX.
12648 Changed the behavior of the _PRW method scan to ignore any and all errors
12649 returned by a given _PRW. This prevents the scan from aborting from the
12650 failure of any single _PRW.
12652 Moved the runtime configuration parameters from the global init procedure
12654 static variables in acglobal.h. This will allow the host to override the
12655 default values easily.
12657 Code and Data Size: Current and previous core subsystem library sizes are
12658 shown below. These are the code and data sizes for the acpica.lib
12660 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12661 any ACPI driver or OSPM code. The debug version of the code includes the
12662 debug output trace mechanism and has a much larger code and data size.
12664 that these values will vary depending on the efficiency of the compiler
12666 the compiler options used during generation.
12669 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12670 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12672 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12673 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12676 2) iASL Compiler/Disassembler:
12678 iASL now fully disassembles SSDTs. However, External() statements are
12680 generated automatically for unresolved symbols at this time. This is a
12681 planned feature for future implementation.
12683 Fixed a scoping problem in the disassembler that occurs when the type of
12685 target of a Scope() operator is overridden. This problem caused an
12686 incorrectly nested internal namespace to be constructed.
12688 Any warnings or errors that are emitted during disassembly are now
12690 out automatically so that the resulting file can be recompiled without
12694 ----------------------------------------
12695 26 March 2004. Summary of changes for version 20040326:
12697 1) ACPI CA Core Subsystem:
12699 Implemented support for "wake" GPEs via interaction between GPEs and the
12700 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
12701 identified as a WAKE GPE and by default will no longer be enabled at
12702 runtime. Previously, we were blindly enabling all GPEs with a
12704 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
12706 believe this has been the cause of thousands of "spurious" GPEs on some
12709 This new GPE behavior is can be reverted to the original behavior (enable
12710 ALL GPEs at runtime) via a runtime flag.
12712 Fixed a problem where aliased control methods could not access objects
12713 properly. The proper scope within the namespace was not initialized
12714 (transferred to the target of the aliased method) before executing the
12717 Fixed a potential race condition on internal object deletion on the
12719 object in AcpiEvaluateObject.
12721 Integrated a fix for resource descriptors where both _MEM and _MTP were
12722 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
12723 wide, 0x0F instead of 0x03.)
12725 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
12728 fault in some cases.
12730 Updated Notify() values for debug statements in evmisc.c
12732 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
12734 Code and Data Size: Current and previous core subsystem library sizes are
12735 shown below. These are the code and data sizes for the acpica.lib
12737 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12738 any ACPI driver or OSPM code. The debug version of the code includes the
12739 debug output trace mechanism and has a much larger code and data size.
12741 that these values will vary depending on the efficiency of the compiler
12743 the compiler options used during generation.
12747 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12748 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12750 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12751 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12753 ----------------------------------------
12754 11 March 2004. Summary of changes for version 20040311:
12756 1) ACPI CA Core Subsystem:
12758 Fixed a problem where errors occurring during the parse phase of control
12759 method execution did not abort cleanly. For example, objects created and
12760 installed in the namespace were not deleted. This caused all subsequent
12761 invocations of the method to return the AE_ALREADY_EXISTS exception.
12763 Implemented a mechanism to force a control method to "Serialized"
12765 if the method attempts to create namespace objects. (The root of the
12766 AE_ALREADY_EXISTS problem.)
12768 Implemented support for the predefined _OSI "internal" control method.
12769 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
12771 "Windows 2001.1", and can be easily upgraded for new strings as
12773 This feature will allow "other" operating systems to execute the fully
12774 tested, "Windows" code path through the ASL code
12776 Global Lock Support: Now allows multiple acquires and releases with any
12777 internal thread. Removed concept of "owning thread" for this special
12780 Fixed two functions that were inappropriately declaring large objects on
12782 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
12784 method execution considerably.
12786 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
12787 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
12789 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
12790 defined on the machine.
12792 Implemented two runtime options: One to force all control method
12794 to "Serialized" to mimic Windows behavior, another to disable _OSI
12796 if it causes problems on a given machine.
12798 Code and Data Size: Current and previous core subsystem library sizes are
12799 shown below. These are the code and data sizes for the acpica.lib
12801 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12802 any ACPI driver or OSPM code. The debug version of the code includes the
12803 debug output trace mechanism and has a much larger code and data size.
12805 that these values will vary depending on the efficiency of the compiler
12807 the compiler options used during generation.
12810 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12811 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12813 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12814 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12816 2) iASL Compiler/Disassembler:
12818 Fixed an array size problem for FreeBSD that would cause the compiler to
12821 ----------------------------------------
12822 20 February 2004. Summary of changes for version 20040220:
12825 1) ACPI CA Core Subsystem:
12827 Implemented execution of _SxD methods for Device objects in the
12828 GetObjectInfo interface.
12830 Fixed calls to _SST method to pass the correct arguments.
12832 Added a call to _SST on wake to restore to "working" state.
12834 Check for End-Of-Buffer failure case in the WalkResources interface.
12836 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
12837 structures to the beginning of the file.
12839 After wake, clear GPE status register(s) before enabling GPEs.
12841 After wake, clear/enable power button. (Perhaps we should clear/enable
12843 fixed events upon wake.)
12845 Fixed a couple of possible memory leaks in the Namespace manager.
12847 Integrated latest acnetbsd.h file.
12849 ----------------------------------------
12850 11 February 2004. Summary of changes for version 20040211:
12853 1) ACPI CA Core Subsystem:
12855 Completed investigation and implementation of the call-by-reference
12856 mechanism for control method arguments.
12858 Fixed a problem where a store of an object into an indexed package could
12859 fail if the store occurs within a different method than the method that
12860 created the package.
12862 Fixed a problem where the ToDecimal operator could return incorrect
12865 Fixed a problem where the CopyObject operator could fail on some of the
12867 obscure objects (e.g., Reference objects.)
12869 Improved the output of the Debug object to display buffer, package, and
12872 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
12874 the expected result.
12876 Added permanent ACPI_REPORT_ERROR macros for all instances of the
12877 ACPI_AML_INTERNAL exception.
12879 Integrated latest version of acfreebsd.h
12881 ----------------------------------------
12882 16 January 2004. Summary of changes for version 20040116:
12884 The purpose of this release is primarily to update the copyright years in
12885 each module, thus causing a huge number of diffs. There are a few small
12886 functional changes, however.
12888 1) ACPI CA Core Subsystem:
12890 Improved error messages when there is a problem finding one or more of
12892 required base ACPI tables
12894 Reintroduced the definition of APIC_HEADER in actbl.h
12896 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
12898 Removed extraneous reference to NewObj in dsmthdat.c
12902 Fixed a problem introduced in December that disabled the correct
12904 of Resource Templates
12907 ----------------------------------------
12908 03 December 2003. Summary of changes for version 20031203:
12910 1) ACPI CA Core Subsystem:
12912 Changed the initialization of Operation Regions during subsystem
12913 init to perform two entire walks of the ACPI namespace; The first
12914 to initialize the regions themselves, the second to execute the
12915 _REG methods. This fixed some interdependencies across _REG
12916 methods found on some machines.
12918 Fixed a problem where a Store(Local0, Local1) could simply update
12919 the object reference count, and not create a new copy of the
12920 object if the Local1 is uninitialized.
12922 Implemented support for the _SST reserved method during sleep
12925 Implemented support to clear the SLP_TYP and SLP_EN bits when
12926 waking up, this is apparently required by some machines.
12928 When sleeping, clear the wake status only if SleepState is not S5.
12930 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
12931 pointer arithmetic advanced a string pointer too far.
12933 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
12934 could be returned if the requested table has not been loaded.
12936 Within the support for IRQ resources, restructured the handling of
12937 the active and edge/level bits.
12939 Fixed a few problems in AcpiPsxExecute() where memory could be
12940 leaked under certain error conditions.
12942 Improved error messages for the cases where the ACPI mode could
12945 Code and Data Size: Current and previous core subsystem library
12946 sizes are shown below. These are the code and data sizes for the
12947 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12948 these values do not include any ACPI driver or OSPM code. The
12949 debug version of the code includes the debug output trace
12950 mechanism and has a much larger code and data size. Note that
12951 these values will vary depending on the efficiency of the compiler
12952 and the compiler options used during generation.
12954 Previous Release (20031029):
12955 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12956 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12958 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12959 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12961 2) iASL Compiler/Disassembler:
12963 Implemented a fix for the iASL disassembler where a bad index was
12964 generated. This was most noticeable on 64-bit platforms
12967 ----------------------------------------
12968 29 October 2003. Summary of changes for version 20031029:
12970 1) ACPI CA Core Subsystem:
12973 Fixed a problem where a level-triggered GPE with an associated
12974 _Lxx control method was incorrectly cleared twice.
12976 Fixed a problem with the Field support code where an access can
12977 occur beyond the end-of-region if the field is non-aligned but
12978 extends to the very end of the parent region (resulted in an
12979 AE_AML_REGION_LIMIT exception.)
12981 Fixed a problem with ACPI Fixed Events where an RT Clock handler
12982 would not get invoked on an RTC event. The RTC event bitmasks for
12983 the PM1 registers were not being initialized properly.
12985 Implemented support for executing _STA and _INI methods for
12986 Processor objects. Although this is currently not part of the
12987 ACPI specification, there is existing ASL code that depends on the
12988 init-time execution of these methods.
12990 Implemented and deployed a GetDescriptorName function to decode
12991 the various types of internal descriptors. Guards against null
12992 descriptors during debug output also.
12994 Implemented and deployed a GetNodeName function to extract the 4-
12995 character namespace node name. This function simplifies the debug
12996 and error output, as well as guarding against null pointers during
12999 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13000 simplify the debug and error output of 64-bit integers. This
13001 macro replaces the HIDWORD and LODWORD macros for dumping these
13004 Updated the implementation of the Stall() operator to only call
13005 AcpiOsStall(), and also return an error if the operand is larger
13006 than 255. This preserves the required behavior of not
13007 relinquishing the processor, as would happen if AcpiOsSleep() was
13008 called for "long stalls".
13010 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13011 initialized are now treated as NOOPs.
13013 Cleaned up a handful of warnings during 64-bit generation.
13015 Fixed a reported error where and incorrect GPE number was passed
13016 to the GPE dispatch handler. This value is only used for error
13017 output, however. Used this opportunity to clean up and streamline
13018 the GPE dispatch code.
13020 Code and Data Size: Current and previous core subsystem library
13021 sizes are shown below. These are the code and data sizes for the
13022 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13023 these values do not include any ACPI driver or OSPM code. The
13025 debug version of the code includes the debug output trace
13026 mechanism and has a much larger code and data size. Note that
13027 these values will vary depending on the efficiency of the compiler
13028 and the compiler options used during generation.
13030 Previous Release (20031002):
13031 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13032 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13034 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13035 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13038 2) iASL Compiler/Disassembler:
13040 Updated the iASL compiler to return an error if the operand to the
13041 Stall() operator is larger than 255.
13044 ----------------------------------------
13045 02 October 2003. Summary of changes for version 20031002:
13048 1) ACPI CA Core Subsystem:
13050 Fixed a problem with Index Fields where the index was not
13051 incremented for fields that require multiple writes to the
13052 index/data registers (Fields that are wider than the data
13055 Fixed a problem with all Field objects where a write could go
13056 beyond the end-of-field if the field was larger than the access
13057 granularity and therefore required multiple writes to complete the
13058 request. An extra write beyond the end of the field could happen
13061 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13062 would incorrectly be returned if the width of the Data Register
13063 was larger than the specified field access width.
13065 Completed fixes for LoadTable() and Unload() and verified their
13066 operation. Implemented full support for the "DdbHandle" object
13067 throughout the ACPI CA subsystem.
13069 Implemented full support for the MADT and ECDT tables in the ACPI
13070 CA header files. Even though these tables are not directly
13071 consumed by ACPI CA, the header definitions are useful for ACPI
13074 Integrated resource descriptor fixes posted to the Linux ACPI
13075 list. This included checks for minimum descriptor length, and
13076 support for trailing NULL strings within descriptors that have
13077 optional string elements.
13079 Code and Data Size: Current and previous core subsystem library
13080 sizes are shown below. These are the code and data sizes for the
13081 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13082 these values do not include any ACPI driver or OSPM code. The
13083 debug version of the code includes the debug output trace
13084 mechanism and has a much larger code and data size. Note that
13085 these values will vary depending on the efficiency of the compiler
13086 and the compiler options used during generation.
13088 Previous Release (20030918):
13089 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13090 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13092 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13093 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13098 Implemented detection of non-ASCII characters within the input
13099 source ASL file. This catches attempts to compile binary (AML)
13100 files early in the compile, with an informative error message.
13102 Fixed a problem where the disassembler would fault if the output
13103 filename could not be generated or if the output file could not be
13106 ----------------------------------------
13107 18 September 2003. Summary of changes for version 20030918:
13110 1) ACPI CA Core Subsystem:
13112 Found and fixed a longstanding problem with the late execution of
13113 the various deferred AML opcodes (such as Operation Regions,
13114 Buffer Fields, Buffers, and Packages). If the name string
13115 specified for the name of the new object placed the object in a
13116 scope other than the current scope, the initialization/execution
13117 of the opcode failed. The solution to this problem was to
13118 implement a mechanism where the late execution of such opcodes
13119 does not attempt to lookup/create the name a second time in an
13120 incorrect scope. This fixes the "region size computed
13121 incorrectly" problem.
13123 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13124 Global Lock AE_BAD_PARAMETER error.
13126 Fixed several 64-bit issues with prototypes, casting and data
13129 Removed duplicate prototype from acdisasm.h
13131 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13133 Code and Data Size: Current and previous core subsystem library
13134 sizes are shown below. These are the code and data sizes for the
13135 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13136 these values do not include any ACPI driver or OSPM code. The
13137 debug version of the code includes the debug output trace
13138 mechanism and has a much larger code and data size. Note that
13139 these values will vary depending on the efficiency of the compiler
13140 and the compiler options used during generation.
13144 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13145 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13147 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13148 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13153 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13154 correct sleep time in seconds.
13156 ----------------------------------------
13157 14 July 2003. Summary of changes for version 20030619:
13159 1) ACPI CA Core Subsystem:
13161 Parse SSDTs in order discovered, as opposed to reverse order
13164 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13171 Dynamically allocate SDT list (suggested by Andi Kleen)
13173 proc function return value cleanups (Andi Kleen)
13175 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13177 Make it so acpismp=force works (reported by Andrew Morton)
13180 ----------------------------------------
13181 19 June 2003. Summary of changes for version 20030619:
13183 1) ACPI CA Core Subsystem:
13185 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13187 Do not acquire a semaphore in the S5 shutdown path.
13189 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13191 Fix sleep/stall code reversal. (Andi Kleen)
13193 Revert a change having to do with control method calling
13198 acpiphp update (Takayoshi Kochi)
13200 Export acpi_disabled for sonypi (Stelian Pop)
13202 Mention acpismp=force in config help
13204 Re-add acpitable.c and acpismp=force. This improves backwards
13206 compatibility and also cleans up the code to a significant degree.
13208 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13210 ----------------------------------------
13211 22 May 2003. Summary of changes for version 20030522:
13213 1) ACPI CA Core Subsystem:
13215 Found and fixed a reported problem where an AE_NOT_FOUND error
13216 occurred occasionally during _BST evaluation. This turned out to
13217 be an Owner ID allocation issue where a called method did not get
13218 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13219 ID UINT16 would wraparound so that the ID would be the same as the
13220 caller's and the called method would delete the caller's
13223 Implemented extended error reporting for control methods that are
13224 aborted due to a run-time exception. Output includes the exact
13225 AML instruction that caused the method abort, a dump of the method
13226 locals and arguments at the time of the abort, and a trace of all
13227 nested control method calls.
13229 Modified the interpreter to allow the creation of buffers of zero
13230 length from the AML code. Implemented new code to ensure that no
13231 attempt is made to actually allocate a memory buffer (of length
13232 zero) - instead, a simple buffer object with a NULL buffer pointer
13233 and length zero is created. A warning is no longer issued when
13234 the AML attempts to create a zero-length buffer.
13236 Implemented a workaround for the "leading asterisk issue" in
13237 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13238 asterisk is automatically removed if present in any HID, UID, or
13239 CID strings. The iASL compiler will still flag this asterisk as
13242 Implemented full support for _CID methods that return a package of
13243 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
13244 now additionally returns a device _CID list if present. This
13245 required a change to the external interface in order to pass an
13246 ACPI_BUFFER object as a parameter since the _CID list is of
13249 Fixed a problem with the new AE_SAME_HANDLER exception where
13250 handler initialization code did not know about this exception.
13252 Code and Data Size: Current and previous core subsystem library
13253 sizes are shown below. These are the code and data sizes for the
13254 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13255 these values do not include any ACPI driver or OSPM code. The
13256 debug version of the code includes the debug output trace
13257 mechanism and has a much larger code and data size. Note that
13258 these values will vary depending on the efficiency of the compiler
13259 and the compiler options used during generation.
13261 Previous Release (20030509):
13262 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13263 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13265 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13266 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13271 Fixed a bug in which we would reinitialize the ACPI interrupt
13272 after it was already working, thus disabling all ACPI and the IRQs
13273 for any other device sharing the interrupt. (Thanks to Stian
13276 Toshiba driver update (John Belmonte)
13278 Return only 0 or 1 for our interrupt handler status (Andrew
13284 Fixed a reported problem where multiple (nested) ElseIf()
13285 statements were not handled correctly by the compiler, resulting
13286 in incorrect warnings and incorrect AML code. This was a problem
13287 in both the ASL parser and the code generator.
13292 Added changes to existing interfaces, new exception codes, and new
13293 text concerning reference count object management versus garbage
13296 ----------------------------------------
13297 09 May 2003. Summary of changes for version 20030509.
13300 1) ACPI CA Core Subsystem:
13302 Changed the subsystem initialization sequence to hold off
13303 installation of address space handlers until the hardware has been
13304 initialized and the system has entered ACPI mode. This is because
13305 the installation of space handlers can cause _REG methods to be
13306 run. Previously, the _REG methods could potentially be run before
13307 ACPI mode was enabled.
13309 Fixed some memory leak issues related to address space handler and
13310 notify handler installation. There were some problems with the
13311 reference count mechanism caused by the fact that the handler
13312 objects are shared across several namespace objects.
13314 Fixed a reported problem where reference counts within the
13315 namespace were not properly updated when named objects created by
13316 method execution were deleted.
13318 Fixed a reported problem where multiple SSDTs caused a deletion
13319 issue during subsystem termination. Restructured the table data
13320 structures to simplify the linked lists and the related code.
13322 Fixed a problem where the table ID associated with secondary
13323 tables (SSDTs) was not being propagated into the namespace objects
13324 created by those tables. This would only present a problem for
13325 tables that are unloaded at run-time, however.
13327 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
13328 type as the length parameter (instead of UINT32).
13330 Solved a long-standing problem where an ALREADY_EXISTS error
13331 appears on various systems. This problem could happen when there
13332 are multiple PCI_Config operation regions under a single PCI root
13333 bus. This doesn't happen very frequently, but there are some
13334 systems that do this in the ASL.
13336 Fixed a reported problem where the internal DeleteNode function
13337 was incorrectly handling the case where a namespace node was the
13338 first in the parent's child list, and had additional peers (not
13339 the only child, but first in the list of children.)
13341 Code and Data Size: Current core subsystem library sizes are shown
13342 below. These are the code and data sizes for the acpica.lib
13343 produced by the Microsoft Visual C++ 6.0 compiler, and these
13344 values do not include any ACPI driver or OSPM code. The debug
13345 version of the code includes the debug output trace mechanism and
13346 has a much larger code and data size. Note that these values will
13347 vary depending on the efficiency of the compiler and the compiler
13348 options used during generation.
13351 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13352 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13354 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13355 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13360 Allow ":" in OS override string (Ducrot Bruno)
13362 Kobject fix (Greg KH)
13365 3 iASL Compiler/Disassembler:
13367 Fixed a problem in the generation of the C source code files (AML
13368 is emitted in C source statements for BIOS inclusion) where the
13369 Ascii dump that appears within a C comment at the end of each line
13370 could cause a compile time error if the AML sequence happens to
13371 have an open comment or close comment sequence embedded.
13374 ----------------------------------------
13375 24 April 2003. Summary of changes for version 20030424.
13378 1) ACPI CA Core Subsystem:
13380 Support for big-endian systems has been implemented. Most of the
13381 support has been invisibly added behind big-endian versions of the
13382 ACPI_MOVE_* macros.
13384 Fixed a problem in AcpiHwDisableGpeBlock() and
13385 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
13386 low level hardware write routine. The offset parameter was
13387 actually eliminated from the low level read/write routines because
13388 they had become obsolete.
13390 Fixed a problem where a handler object was deleted twice during
13391 the removal of a fixed event handler.
13396 A fix for SMP systems with link devices was contributed by
13400 (2.5) Return whether we handled the interrupt in our IRQ handler.
13401 (Linux ISRs no longer return void, so we can propagate the handler
13402 return value from the ACPI CA core back to the OS.)
13408 The ACPI CA Programmer Reference has been updated to reflect new
13409 interfaces and changes to existing interfaces.
13411 ----------------------------------------
13412 28 March 2003. Summary of changes for version 20030328.
13414 1) ACPI CA Core Subsystem:
13416 The GPE Block Device support has been completed. New interfaces
13417 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
13418 interfaces (enable, disable, clear, getstatus) have been split
13419 into separate interfaces for Fixed Events and General Purpose
13420 Events (GPEs) in order to support GPE Block Devices properly.
13422 Fixed a problem where the error message "Failed to acquire
13423 semaphore" would appear during operations on the embedded
13426 Code and Data Size: Current core subsystem library sizes are shown
13427 below. These are the code and data sizes for the acpica.lib
13428 produced by the Microsoft Visual C++ 6.0 compiler, and these
13429 values do not include any ACPI driver or OSPM code. The debug
13430 version of the code includes the debug output trace mechanism and
13431 has a much larger code and data size. Note that these values will
13432 vary depending on the efficiency of the compiler and the compiler
13433 options used during generation.
13436 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13437 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13439 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13440 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13443 ----------------------------------------
13444 28 February 2003. Summary of changes for version 20030228.
13447 1) ACPI CA Core Subsystem:
13449 The GPE handling and dispatch code has been completely overhauled
13450 in preparation for support of GPE Block Devices (ID ACPI0006).
13451 This affects internal data structures and code only; there should
13452 be no differences visible externally. One new file has been
13455 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
13456 fields that are used to determine the GPE block lengths. The
13457 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
13458 structures are ignored. This is per the ACPI specification but it
13459 isn't very clear. The full 256 Block 0/1 GPEs are now supported
13460 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
13462 In the SCI interrupt handler, removed the read of the PM1_CONTROL
13463 register to look at the SCI_EN bit. On some machines, this read
13464 causes an SMI event and greatly slows down SCI events. (This may
13465 in fact be the cause of slow battery status response on some
13468 Fixed a problem where a store of a NULL string to a package object
13469 could cause the premature deletion of the object. This was seen
13470 during execution of the battery _BIF method on some systems,
13471 resulting in no battery data being returned.
13473 Added AcpiWalkResources interface to simplify parsing of resource
13476 Code and Data Size: Current core subsystem library sizes are shown
13477 below. These are the code and data sizes for the acpica.lib
13478 produced by the Microsoft Visual C++ 6.0 compiler, and these
13479 values do not include any ACPI driver or OSPM code. The debug
13480 version of the code includes the debug output trace mechanism and
13481 has a much larger code and data size. Note that these values will
13482 vary depending on the efficiency of the compiler and the compiler
13483 options used during generation.
13486 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13487 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13489 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13490 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13495 S3 fixes (Ole Rohne)
13497 Update ACPI PHP driver with to use new acpi_walk_resource API
13500 Add S4BIOS support (Pavel Machek)
13502 Map in entire table before performing checksum (John Stultz)
13504 Expand the mem= cmdline to allow the specification of reserved and
13505 ACPI DATA blocks (Pavel Machek)
13507 Never use ACPI on VISWS
13509 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
13511 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
13512 causing us to think that some systems support C2 when they really
13515 Do not count processor objects for non-present CPUs (Thanks to
13521 Fixed a problem where ASL include files could not be found and
13524 Added support for the _PDC reserved name.
13527 ----------------------------------------
13528 22 January 2003. Summary of changes for version 20030122.
13531 1) ACPI CA Core Subsystem:
13533 Added a check for constructs of the form: Store (Local0, Local0)
13534 where Local0 is not initialized. Apparently, some BIOS
13535 programmers believe that this is a NOOP. Since this store doesn't
13536 do anything anyway, the new prototype behavior will ignore this
13537 error. This is a case where we can relax the strict checking in
13538 the interpreter in the name of compatibility.
13543 The AcpiSrc Source Conversion Utility has been released with the
13544 Linux package for the first time. This is the utility that is
13545 used to convert the ACPI CA base source code to the Linux version.
13547 (Both) Handle P_BLK lengths shorter than 6 more gracefully
13549 (Both) Move more headers to include/acpi, and delete an unused
13552 (Both) Move drivers/acpi/include directory to include/acpi
13554 (Both) Boot functions don't use cmdline, so don't pass it around
13556 (Both) Remove include of unused header (Adrian Bunk)
13558 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
13560 former now also includes the latter, acpiphp.h only needs the one,
13563 (2.5) Make it possible to select method of bios restoring after S3
13564 resume. [=> no more ugly ifdefs] (Pavel Machek)
13566 (2.5) Make proc write interfaces work (Pavel Machek)
13568 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
13570 (2.5) Break out ACPI Perf code into its own module, under cpufreq
13571 (Dominik Brodowski)
13573 (2.4) S4BIOS support (Ducrot Bruno)
13575 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
13581 Added support to disassemble SSDT and PSDTs.
13583 Implemented support to obtain SSDTs from the Windows registry if
13587 ----------------------------------------
13588 09 January 2003. Summary of changes for version 20030109.
13590 1) ACPI CA Core Subsystem:
13592 Changed the behavior of the internal Buffer-to-String conversion
13593 function. The current ACPI specification states that the contents
13594 of the buffer are "converted to a string of two-character
13595 hexadecimal numbers, each separated by a space". Unfortunately,
13596 this definition is not backwards compatible with existing ACPI 1.0
13597 implementations (although the behavior was not defined in the ACPI
13598 1.0 specification). The new behavior simply copies data from the
13599 buffer to the string until a null character is found or the end of
13600 the buffer is reached. The new String object is always null
13601 terminated. This problem was seen during the generation of _BIF
13602 battery data where incorrect strings were returned for battery
13603 type, etc. This will also require an errata to the ACPI
13606 Renamed all instances of NATIVE_UINT and NATIVE_INT to
13607 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
13609 Copyright in all module headers (both Linux and non-Linux) has be
13612 Code and Data Size: Current core subsystem library sizes are shown
13613 below. These are the code and data sizes for the acpica.lib
13614 produced by the Microsoft Visual C++ 6.0 compiler, and these
13615 values do not include any ACPI driver or OSPM code. The debug
13616 version of the code includes the debug output trace mechanism and
13617 has a much larger code and data size. Note that these values will
13618 vary depending on the efficiency of the compiler and the compiler
13619 options used during generation.
13622 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13623 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13625 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13626 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13631 Fixed an oops on module insertion/removal (Matthew Tippett)
13633 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
13635 (2.5) Replace pr_debug (Randy Dunlap)
13637 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
13639 (Both) Eliminate spawning of thread from timer callback, in favor
13642 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
13644 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
13646 (Both) Add missing statics to button.c (Pavel Machek)
13648 Several changes have been made to the source code translation
13649 utility that generates the Linux Code in order to make the code
13652 All typedefs on structs and unions have been removed in keeping
13653 with the Linux coding style.
13655 Removed the non-Linux SourceSafe module revision number from each
13658 Completed major overhaul of symbols to be lowercased for linux.
13659 Doubled the number of symbols that are lowercased.
13661 Fixed a problem where identifiers within procedure headers and
13662 within quotes were not fully lower cased (they were left with a
13665 Some C macros whose only purpose is to allow the generation of 16-
13666 bit code are now completely removed in the Linux code, increasing
13667 readability and maintainability.
13669 ----------------------------------------
13671 12 December 2002. Summary of changes for version 20021212.
13674 1) ACPI CA Core Subsystem:
13676 Fixed a problem where the creation of a zero-length AML Buffer
13677 would cause a fault.
13679 Fixed a problem where a Buffer object that pointed to a static AML
13680 buffer (in an ACPI table) could inadvertently be deleted, causing
13683 Fixed a problem where a user buffer (passed in to the external
13684 ACPI CA interfaces) could be overwritten if the buffer was too
13685 small to complete the operation, causing memory corruption.
13687 Fixed a problem in the Buffer-to-String conversion code where a
13688 string of length one was always returned, regardless of the size
13689 of the input Buffer object.
13691 Removed the NATIVE_CHAR data type across the entire source due to
13692 lack of need and lack of consistent use.
13694 Code and Data Size: Current core subsystem library sizes are shown
13695 below. These are the code and data sizes for the acpica.lib
13696 produced by the Microsoft Visual C++ 6.0 compiler, and these
13697 values do not include any ACPI driver or OSPM code. The debug
13698 version of the code includes the debug output trace mechanism and
13699 has a much larger code and data size. Note that these values will
13700 vary depending on the efficiency of the compiler and the compiler
13701 options used during generation.
13704 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13705 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13707 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13708 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13711 ----------------------------------------
13712 05 December 2002. Summary of changes for version 20021205.
13714 1) ACPI CA Core Subsystem:
13716 Fixed a problem where a store to a String or Buffer object could
13717 cause corruption of the DSDT if the object type being stored was
13718 the same as the target object type and the length of the object
13719 being stored was equal to or smaller than the original (existing)
13720 target object. This was seen to cause corruption of battery _BIF
13721 buffers if the _BIF method modified the buffer on the fly.
13723 Fixed a problem where an internal error was generated if a control
13724 method invocation was used in an OperationRegion, Buffer, or
13725 Package declaration. This was caused by the deferred parsing of
13726 the control method and thus the deferred creation of the internal
13727 method object. The solution to this problem was to create the
13728 internal method object at the moment the method is encountered in
13729 the first pass - so that subsequent references to the method will
13730 able to obtain the required parameter count and thus properly
13731 parse the method invocation. This problem presented itself as an
13732 AE_AML_INTERNAL during the pass 1 parse phase during table load.
13734 Fixed a problem where the internal String object copy routine did
13735 not always allocate sufficient memory for the target String object
13736 and caused memory corruption. This problem was seen to cause
13737 "Allocation already present in list!" errors as memory allocation
13740 Implemented a new function for the evaluation of namespace objects
13741 that allows the specification of the allowable return object
13742 types. This simplifies a lot of code that checks for a return
13743 object of one or more specific objects returned from the
13744 evaluation (such as _STA, etc.) This may become and external
13745 function if it would be useful to ACPI-related drivers.
13747 Completed another round of prefixing #defines with "ACPI_" for
13750 Completed additional code restructuring to allow more modular
13751 linking for iASL compiler and AcpiExec. Several files were split
13752 creating new files. New files: nsparse.c dsinit.c evgpe.c
13754 Implemented an abort mechanism to terminate an executing control
13755 method via the AML debugger. This feature is useful for debugging
13756 control methods that depend (wait) for specific hardware
13759 Code and Data Size: Current core subsystem library sizes are shown
13760 below. These are the code and data sizes for the acpica.lib
13761 produced by the Microsoft Visual C++ 6.0 compiler, and these
13762 values do not include any ACPI driver or OSPM code. The debug
13763 version of the code includes the debug output trace mechanism and
13764 has a much larger code and data size. Note that these values will
13765 vary depending on the efficiency of the compiler and the compiler
13766 options used during generation.
13769 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13770 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13772 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13773 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13776 2) iASL Compiler/Disassembler
13778 Fixed a compiler code generation problem for "Interrupt" Resource
13779 Descriptors. If specified in the ASL, the optional "Resource
13780 Source Index" and "Resource Source" fields were not inserted into
13781 the correct location within the AML resource descriptor, creating
13782 an invalid descriptor.
13784 Fixed a disassembler problem for "Interrupt" resource descriptors.
13785 The optional "Resource Source Index" and "Resource Source" fields
13789 ----------------------------------------
13790 22 November 2002. Summary of changes for version 20021122.
13793 1) ACPI CA Core Subsystem:
13795 Fixed a reported problem where an object stored to a Method Local
13796 or Arg was not copied to a new object during the store - the
13797 object pointer was simply copied to the Local/Arg. This caused
13798 all subsequent operations on the Local/Arg to also affect the
13799 original source of the store operation.
13801 Fixed a problem where a store operation to a Method Local or Arg
13802 was not completed properly if the Local/Arg contained a reference
13803 (from RefOf) to a named field. The general-purpose store-to-
13804 namespace-node code is now used so that this case is handled
13807 Fixed a problem where the internal object copy routine would cause
13808 a protection fault if the object being copied was a Package and
13809 contained either 1) a NULL package element or 2) a nested sub-
13812 Fixed a problem with the GPE initialization that resulted from an
13813 ambiguity in the ACPI specification. One section of the
13814 specification states that both the address and length of the GPE
13815 block must be zero if the block is not supported. Another section
13816 implies that only the address need be zero if the block is not
13817 supported. The code has been changed so that both the address and
13818 the length must be non-zero to indicate a valid GPE block (i.e.,
13819 if either the address or the length is zero, the GPE block is
13822 Code and Data Size: Current core subsystem library sizes are shown
13823 below. These are the code and data sizes for the acpica.lib
13824 produced by the Microsoft Visual C++ 6.0 compiler, and these
13825 values do not include any ACPI driver or OSPM code. The debug
13826 version of the code includes the debug output trace mechanism and
13827 has a much larger code and data size. Note that these values will
13828 vary depending on the efficiency of the compiler and the compiler
13829 options used during generation.
13832 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13833 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13835 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13836 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13841 Cleaned up EC driver. Exported an external EC read/write
13842 interface. By going through this, other drivers (most notably
13843 sonypi) will be able to serialize access to the EC.
13846 3) iASL Compiler/Disassembler
13848 Implemented support to optionally generate include files for both
13849 ASM and C (the -i switch). This simplifies BIOS development by
13850 automatically creating include files that contain external
13851 declarations for the symbols that are created within the
13853 (optionally generated) ASM and C AML source files.
13856 ----------------------------------------
13857 15 November 2002. Summary of changes for version 20021115.
13859 1) ACPI CA Core Subsystem:
13861 Fixed a memory leak problem where an error during resolution of
13863 method arguments during a method invocation from another method
13864 failed to cleanup properly by deleting all successfully resolved
13867 Fixed a problem where the target of the Index() operator was not
13868 correctly constructed if the source object was a package. This
13869 problem has not been detected because the use of a target operand
13870 with Index() is very rare.
13872 Fixed a problem with the Index() operator where an attempt was
13873 made to delete the operand objects twice.
13875 Fixed a problem where an attempt was made to delete an operand
13876 twice during execution of the CondRefOf() operator if the target
13879 Implemented the first of perhaps several internal create object
13880 functions that create and initialize a specific object type. This
13881 consolidates duplicated code wherever the object is created, thus
13882 shrinking the size of the subsystem.
13884 Implemented improved debug/error messages for errors that occur
13885 during nested method invocations. All executing method pathnames
13886 are displayed (with the error) as the call stack is unwound - thus
13889 Fixed a problem introduced in the 10/02 release that caused
13890 premature deletion of a buffer object if a buffer was used as an
13891 ASL operand where an integer operand is required (Thus causing an
13892 implicit object conversion from Buffer to Integer.) The change in
13893 the 10/02 release was attempting to fix a memory leak (albeit
13896 Code and Data Size: Current core subsystem library sizes are shown
13897 below. These are the code and data sizes for the acpica.lib
13898 produced by the Microsoft Visual C++ 6.0 compiler, and these
13899 values do not include any ACPI driver or OSPM code. The debug
13900 version of the code includes the debug output trace mechanism and
13901 has a much larger code and data size. Note that these values will
13902 vary depending on the efficiency of the compiler and the compiler
13903 options used during generation.
13906 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13907 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13909 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13910 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13915 Changed the implementation of the ACPI semaphores to use down()
13916 instead of down_interruptable(). It is important that the
13917 execution of ACPI control methods not be interrupted by signals.
13918 Methods must run to completion, or the system may be left in an
13919 unknown/unstable state.
13921 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
13925 3) iASL Compiler/Disassembler
13928 Changed the default location of output files. All output files
13929 are now placed in the current directory by default instead of in
13930 the directory of the source file. This change may affect some
13931 existing makefiles, but it brings the behavior of the compiler in
13932 line with other similar tools. The location of the output files
13933 can be overridden with the -p command line switch.
13936 ----------------------------------------
13937 11 November 2002. Summary of changes for version 20021111.
13940 0) ACPI Specification 2.0B is released and is now available at:
13941 http://www.acpi.info/index.html
13944 1) ACPI CA Core Subsystem:
13946 Implemented support for the ACPI 2.0 SMBus Operation Regions.
13947 This includes the early detection and handoff of the request to
13948 the SMBus region handler (avoiding all of the complex field
13949 support code), and support for the bidirectional return packet
13950 from an SMBus write operation. This paves the way for the
13951 development of SMBus drivers in each host operating system.
13953 Fixed a problem where the semaphore WAIT_FOREVER constant was
13954 defined as 32 bits, but must be 16 bits according to the ACPI
13955 specification. This had the side effect of causing ASL
13956 Mutex/Event timeouts even though the ASL code requested a wait
13957 forever. Changed all internal references to the ACPI timeout
13958 parameter to 16 bits to prevent future problems. Changed the name
13959 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
13961 Code and Data Size: Current core subsystem library sizes are shown
13962 below. These are the code and data sizes for the acpica.lib
13963 produced by the Microsoft Visual C++ 6.0 compiler, and these
13964 values do not include any ACPI driver or OSPM code. The debug
13965 version of the code includes the debug output trace mechanism and
13966 has a much larger code and data size. Note that these values will
13967 vary depending on the efficiency of the compiler and the compiler
13968 options used during generation.
13971 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13972 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13974 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13975 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13980 Module loading/unloading fixes (John Cagle)
13983 3) iASL Compiler/Disassembler
13985 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
13987 Implemented support for the disassembly of all SMBus protocol
13988 keywords (SMBQuick, SMBWord, etc.)
13990 ----------------------------------------
13991 01 November 2002. Summary of changes for version 20021101.
13994 1) ACPI CA Core Subsystem:
13996 Fixed a problem where platforms that have a GPE1 block but no GPE0
13997 block were not handled correctly. This resulted in a "GPE
13998 overlap" error message. GPE0 is no longer required.
14000 Removed code added in the previous release that inserted nodes
14001 into the namespace in alphabetical order. This caused some side-
14002 effects on various machines. The root cause of the problem is
14003 still under investigation since in theory, the internal ordering
14004 of the namespace nodes should not matter.
14007 Enhanced error reporting for the case where a named object is not
14008 found during control method execution. The full ACPI namepath
14009 (name reference) of the object that was not found is displayed in
14012 Note: as a result of the overhaul of the namespace object types in
14013 the previous release, the namespace nodes for the predefined
14014 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14015 instead of ACPI_TYPE_ANY. This simplifies the namespace
14016 management code but may affect code that walks the namespace tree
14017 looking for specific object types.
14019 Code and Data Size: Current core subsystem library sizes are shown
14020 below. These are the code and data sizes for the acpica.lib
14021 produced by the Microsoft Visual C++ 6.0 compiler, and these
14022 values do not include any ACPI driver or OSPM code. The debug
14023 version of the code includes the debug output trace mechanism and
14024 has a much larger code and data size. Note that these values will
14025 vary depending on the efficiency of the compiler and the compiler
14026 options used during generation.
14029 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14030 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14032 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14033 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14038 Fixed a problem introduced in the previous release where the
14039 Processor and Thermal objects were not recognized and installed in
14040 /proc. This was related to the scope type change described above.
14043 3) iASL Compiler/Disassembler
14045 Implemented the -g option to get all of the required ACPI tables
14046 from the registry and save them to files (Windows version of the
14047 compiler only.) The required tables are the FADT, FACS, and DSDT.
14049 Added ACPI table checksum validation during table disassembly in
14050 order to catch corrupted tables.
14053 ----------------------------------------
14054 22 October 2002. Summary of changes for version 20021022.
14056 1) ACPI CA Core Subsystem:
14058 Implemented a restriction on the Scope operator that the target
14059 must already exist in the namespace at the time the operator is
14060 encountered (during table load or method execution). In other
14061 words, forward references are not allowed and Scope() cannot
14062 create a new object. This changes the previous behavior where the
14063 interpreter would create the name if not found. This new behavior
14064 correctly enables the search-to-root algorithm during namespace
14065 lookup of the target name. Because of this upsearch, this fixes
14066 the known Compaq _SB_.OKEC problem and makes both the AML
14067 interpreter and iASL compiler compatible with other ACPI
14070 Completed a major overhaul of the internal ACPI object types for
14071 the ACPI Namespace and the associated operand objects. Many of
14072 these types had become obsolete with the introduction of the two-
14073 pass namespace load. This cleanup simplifies the code and makes
14074 the entire namespace load mechanism much clearer and easier to
14077 Improved debug output for tracking scope opening/closing to help
14078 diagnose scoping issues. The old scope name as well as the new
14079 scope name are displayed. Also improved error messages for
14080 problems with ASL Mutex objects and error messages for GPE
14083 Cleaned up the namespace dump code, removed obsolete code.
14085 All string output (for all namespace/object dumps) now uses the
14086 common ACPI string output procedure which handles escapes properly
14087 and does not emit non-printable characters.
14089 Fixed some issues with constants in the 64-bit version of the
14090 local C library (utclib.c)
14095 EC Driver: No longer attempts to acquire the Global Lock at
14099 3) iASL Compiler/Disassembler
14101 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14102 2 opcodes outside of a control method. This means that the
14103 "executable" operators (versus the "namespace" operators) cannot
14104 be used at the table level; they can only be used within a control
14107 Implemented the restriction on the Scope() operator where the
14108 target must already exist in the namespace at the time the
14109 operator is encountered (during ASL compilation). In other words,
14110 forward references are not allowed and Scope() cannot create a new
14111 object. This makes the iASL compiler compatible with other ACPI
14112 implementations and makes the Scope() implementation adhere to the
14113 ACPI specification.
14115 Fixed a problem where namepath optimization for the Alias operator
14116 was optimizing the wrong path (of the two namepaths.) This caused
14117 a "Missing alias link" error message.
14119 Fixed a problem where an "unknown reserved name" warning could be
14120 incorrectly generated for names like "_SB" when the trailing
14121 underscore is not used in the original ASL.
14123 Fixed a problem where the reserved name check did not handle
14124 NamePaths with multiple NameSegs correctly. The first nameseg of
14125 the NamePath was examined instead of the last NameSeg.
14128 ----------------------------------------
14130 02 October 2002. Summary of changes for this release.
14133 1) ACPI CA Core Subsystem version 20021002:
14135 Fixed a problem where a store/copy of a string to an existing
14136 string did not always set the string length properly in the String
14139 Fixed a reported problem with the ToString operator where the
14140 behavior was identical to the ToHexString operator instead of just
14141 simply converting a raw buffer to a string data type.
14143 Fixed a problem where CopyObject and the other "explicit"
14144 conversion operators were not updating the internal namespace node
14145 type as part of the store operation.
14147 Fixed a memory leak during implicit source operand conversion
14148 where the original object was not deleted if it was converted to a
14149 new object of a different type.
14151 Enhanced error messages for all problems associated with namespace
14152 lookups. Common procedure generates and prints the lookup name as
14153 well as the formatted status.
14155 Completed implementation of a new design for the Alias support
14156 within the namespace. The existing design did not handle the case
14157 where a new object was assigned to one of the two names due to the
14158 use of an explicit conversion operator, resulting in the two names
14159 pointing to two different objects. The new design simply points
14160 the Alias name to the original name node - not to the object.
14161 This results in a level of indirection that must be handled in the
14162 name resolution mechanism.
14164 Code and Data Size: Current core subsystem library sizes are shown
14165 below. These are the code and data sizes for the acpica.lib
14166 produced by the Microsoft Visual C++ 6.0 compiler, and these
14167 values do not include any ACPI driver or OSPM code. The debug
14168 version of the code includes the debug output trace mechanism and
14169 has a larger code and data size. Note that these values will vary
14170 depending on the efficiency of the compiler and the compiler
14171 options used during generation.
14174 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14175 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14177 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14178 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14183 Initialize thermal driver's timer before it is used. (Knut
14186 Allow handling negative celsius values. (Kochi Takayoshi)
14188 Fix thermal management and make trip points. R/W (Pavel Machek)
14190 Fix /proc/acpi/sleep. (P. Christeas)
14192 IA64 fixes. (David Mosberger)
14194 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14196 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14200 3) iASL Compiler/Disassembler
14202 Clarified some warning/error messages.
14205 ----------------------------------------
14206 18 September 2002. Summary of changes for this release.
14209 1) ACPI CA Core Subsystem version 20020918:
14211 Fixed a reported problem with reference chaining (via the Index()
14212 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14213 The definition of these operators includes the dereferencing of
14214 all chained references to return information on the base object.
14216 Fixed a problem with stores to indexed package elements - the
14217 existing code would not complete the store if an "implicit
14218 conversion" was not performed. In other words, if the existing
14219 object (package element) was to be replaced completely, the code
14220 didn't handle this case.
14222 Relaxed typechecking on the ASL "Scope" operator to allow the
14223 target name to refer to an object of type Integer, String, or
14224 Buffer, in addition to the scoping object types (Device,
14225 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14226 This allows existing AML code that has workarounds for a bug in
14227 Windows to function properly. A warning is issued, however. This
14228 affects both the AML interpreter and the iASL compiler. Below is
14229 an example of this type of ASL code:
14235 Fixed some reported problems with 64-bit integer support in the
14236 local implementation of C library functions (clib.c)
14241 Use ACPI fix map region instead of IOAPIC region, since it is
14242 undefined in non-SMP.
14244 Ensure that the SCI has the proper polarity and trigger, even on
14245 systems that do not have an interrupt override entry in the MADT.
14247 2.5 big driver reorganization (Pat Mochel)
14249 Use early table mapping code from acpitable.c (Andi Kleen)
14251 New blacklist entries (Andi Kleen)
14253 Blacklist improvements. Split blacklist code out into a separate
14254 file. Move checking the blacklist to very early. Previously, we
14255 would use ACPI tables, and then halfway through init, check the
14256 blacklist -- too late. Now, it's early enough to completely fall-
14260 3) iASL Compiler/Disassembler version 20020918:
14262 Fixed a problem where the typechecking code didn't know that an
14263 alias could point to a method. In other words, aliases were not
14264 being dereferenced during typechecking.
14267 ----------------------------------------
14268 29 August 2002. Summary of changes for this release.
14270 1) ACPI CA Core Subsystem Version 20020829:
14272 If the target of a Scope() operator already exists, it must be an
14273 object type that actually opens a scope -- such as a Device,
14274 Method, Scope, etc. This is a fatal runtime error. Similar error
14275 check has been added to the iASL compiler also.
14277 Tightened up the namespace load to disallow multiple names in the
14278 same scope. This previously was allowed if both objects were of
14279 the same type. (i.e., a lookup was the same as entering a new
14285 Ensure that the ACPI interrupt has the proper trigger and
14288 local_irq_disable is extraneous. (Matthew Wilcox)
14290 Make "acpi=off" actually do what it says, and not use the ACPI
14291 interpreter *or* the tables.
14293 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
14297 3) iASL Compiler/Disassembler Version 20020829:
14299 Implemented namepath optimization for name declarations. For
14300 example, a declaration like "Method (\_SB_.ABCD)" would get
14301 optimized to "Method (ABCD)" if the declaration is within the
14302 \_SB_ scope. This optimization is in addition to the named
14303 reference path optimization first released in the previous
14304 version. This would seem to complete all possible optimizations
14305 for namepaths within the ASL/AML.
14307 If the target of a Scope() operator already exists, it must be an
14308 object type that actually opens a scope -- such as a Device,
14309 Method, Scope, etc.
14311 Implemented a check and warning for unreachable code in the same
14312 block below a Return() statement.
14314 Fixed a problem where the listing file was not generated if the
14315 compiler aborted if the maximum error count was exceeded (200).
14317 Fixed a problem where the typechecking of method return values was
14318 broken. This includes the check for a return value when the
14319 method is invoked as a TermArg (a return value is expected.)
14321 Fixed a reported problem where EOF conditions during a quoted
14322 string or comment caused a fault.
14325 ----------------------------------------
14326 15 August 2002. Summary of changes for this release.
14328 1) ACPI CA Core Subsystem Version 20020815:
14330 Fixed a reported problem where a Store to a method argument that
14331 contains a reference did not perform the indirect store correctly.
14332 This problem was created during the conversion to the new
14333 reference object model - the indirect store to a method argument
14334 code was not updated to reflect the new model.
14336 Reworked the ACPI mode change code to better conform to ACPI 2.0,
14337 handle corner cases, and improve code legibility (Kochi Takayoshi)
14339 Fixed a problem with the pathname parsing for the carat (^)
14340 prefix. The heavy use of the carat operator by the new namepath
14341 optimization in the iASL compiler uncovered a problem with the AML
14342 interpreter handling of this prefix. In the case where one or
14343 more carats precede a single nameseg, the nameseg was treated as
14344 standalone and the search rule (to root) was inadvertently
14345 applied. This could cause both the iASL compiler and the
14346 interpreter to find the wrong object or to miss the error that
14347 should occur if the object does not exist at that exact pathname.
14349 Found and fixed the problem where the HP Pavilion DSDT would not
14350 load. This was a relatively minor tweak to the table loading code
14351 (a problem caused by the unexpected encounter with a method
14352 invocation not within a control method), but it does not solve the
14353 overall issue of the execution of AML code at the table level.
14354 This investigation is still ongoing.
14356 Code and Data Size: Current core subsystem library sizes are shown
14357 below. These are the code and data sizes for the acpica.lib
14358 produced by the Microsoft Visual C++ 6.0 compiler, and these
14359 values do not include any ACPI driver or OSPM code. The debug
14360 version of the code includes the debug output trace mechanism and
14361 has a larger code and data size. Note that these values will vary
14362 depending on the efficiency of the compiler and the compiler
14363 options used during generation.
14366 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14367 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14369 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14370 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14375 Remove redundant slab.h include (Brad Hards)
14377 Fix several bugs in thermal.c (Herbert Nachtnebel)
14379 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
14381 Change acpi_system_suspend to use updated irq functions (Pavel
14384 Export acpi_get_firmware_table (Matthew Wilcox)
14386 Use proper root proc entry for ACPI (Kochi Takayoshi)
14388 Fix early-boot table parsing (Bjorn Helgaas)
14391 3) iASL Compiler/Disassembler
14393 Reworked the compiler options to make them more consistent and to
14394 use two-letter options where appropriate. We were running out of
14395 sensible letters. This may break some makefiles, so check the
14396 current options list by invoking the compiler with no parameters.
14398 Completed the design and implementation of the ASL namepath
14399 optimization option for the compiler. This option optimizes all
14400 references to named objects to the shortest possible path. The
14401 first attempt tries to utilize a single nameseg (4 characters) and
14402 the "search-to-root" algorithm used by the interpreter. If that
14403 cannot be used (because either the name is not in the search path
14404 or there is a conflict with another object with the same name),
14405 the pathname is optimized using the carat prefix (usually a
14406 shorter string than specifying the entire path from the root.)
14408 Implemented support to obtain the DSDT from the Windows registry
14409 (when the disassembly option is specified with no input file).
14410 Added this code as the implementation for AcpiOsTableOverride in
14411 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
14412 utility) to scan memory for the DSDT to the AcpiOsTableOverride
14413 function in the DOS OSL to make the disassembler truly OS
14416 Implemented a new option to disassemble and compile in one step.
14417 When used without an input filename, this option will grab the
14418 DSDT from the local machine, disassemble it, and compile it in one
14421 Added a warning message for invalid escapes (a backslash followed
14422 by any character other than the allowable escapes). This catches
14423 the quoted string error "\_SB_" (which should be "\\_SB_" ).
14425 Also, there are numerous instances in the ACPI specification where
14428 Added a compiler option to disable all optimizations. This is
14429 basically the "compatibility mode" because by using this option,
14430 the AML code will come out exactly the same as other ASL
14433 Added error messages for incorrectly ordered dependent resource
14434 functions. This includes: missing EndDependentFn macro at end of
14435 dependent resource list, nested dependent function macros (both
14436 start and end), and missing StartDependentFn macro. These are
14437 common errors that should be caught at compile time.
14439 Implemented _OSI support for the disassembler and compiler. _OSI
14440 must be included in the namespace for proper disassembly (because
14441 the disassembler must know the number of arguments.)
14443 Added an "optimization" message type that is optional (off by
14444 default). This message is used for all optimizations - including
14445 constant folding, integer optimization, and namepath optimization.
14447 ----------------------------------------
14448 25 July 2002. Summary of changes for this release.
14451 1) ACPI CA Core Subsystem Version 20020725:
14453 The AML Disassembler has been enhanced to produce compilable ASL
14454 code and has been integrated into the iASL compiler (see below) as
14455 well as the single-step disassembly for the AML debugger and the
14456 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
14457 resource templates and macros are fully supported. The
14458 disassembler has been tested on over 30 different AML files,
14459 producing identical AML when the resulting disassembled ASL file
14460 is recompiled with the same ASL compiler.
14462 Modified the Resource Manager to allow zero interrupts and zero
14463 dma channels during the GetCurrentResources call. This was
14464 causing problems on some platforms.
14466 Added the AcpiOsRedirectOutput interface to the OSL to simplify
14467 output redirection for the AcpiOsPrintf and AcpiOsVprintf
14470 Code and Data Size: Current core subsystem library sizes are shown
14471 below. These are the code and data sizes for the acpica.lib
14472 produced by the Microsoft Visual C++ 6.0 compiler, and these
14473 values do not include any ACPI driver or OSPM code. The debug
14474 version of the code includes the debug output trace mechanism and
14475 has a larger code and data size. Note that these values will vary
14476 depending on the efficiency of the compiler and the compiler
14477 options used during generation.
14480 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14481 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14483 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14484 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14489 Fixed a panic in the EC driver (Dominik Brodowski)
14491 Implemented checksum of the R/XSDT itself during Linux table scan
14497 The AML disassembler is integrated into the compiler. The "-d"
14498 option invokes the disassembler to completely disassemble an
14499 input AML file, producing as output a text ASL file with the
14500 extension ".dsl" (to avoid name collisions with existing .asl
14501 source files.) A future enhancement will allow the disassembler
14502 to obtain the BIOS DSDT from the registry under Windows.
14504 Fixed a problem with the VendorShort and VendorLong resource
14505 descriptors where an invalid AML sequence was created.
14507 Implemented a fix for BufferData term in the ASL parser. It was
14508 inadvertently defined twice, allowing invalid syntax to pass and
14509 causing reduction conflicts.
14511 Fixed a problem where the Ones opcode could get converted to a
14512 value of zero if "Ones" was used where a byte, word or dword value
14513 was expected. The 64-bit value is now truncated to the correct
14514 size with the correct value.
14518 ----------------------------------------
14519 02 July 2002. Summary of changes for this release.
14522 1) ACPI CA Core Subsystem Version 20020702:
14524 The Table Manager code has been restructured to add several new
14525 features. Tables that are not required by the core subsystem
14526 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
14527 validated in any way and are returned from AcpiGetFirmwareTable if
14528 requested. The AcpiOsTableOverride interface is now called for
14529 each table that is loaded by the subsystem in order to allow the
14530 host to override any table it chooses. Previously, only the DSDT
14531 could be overridden. Added one new files, tbrsdt.c and
14534 Fixed a problem with the conversion of internal package objects to
14535 external objects (when a package is returned from a control
14536 method.) The return buffer length was set to zero instead of the
14537 proper length of the package object.
14539 Fixed a reported problem with the use of the RefOf and DeRefOf
14540 operators when passing reference arguments to control methods. A
14541 new type of Reference object is used internally for references
14542 produced by the RefOf operator.
14544 Added additional error messages in the Resource Manager to explain
14545 AE_BAD_DATA errors when they occur during resource parsing.
14547 Split the AcpiEnableSubsystem into two primitives to enable a
14548 finer granularity initialization sequence. These two calls should
14549 be called in this order: AcpiEnableSubsystem (flags),
14550 AcpiInitializeObjects (flags). The flags parameter remains the
14556 Updated the ACPI utilities module to understand the new style of
14557 fully resolved package objects that are now returned from the core
14558 subsystem. This eliminates errors of the form:
14560 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
14561 acpi_utils-0430 [145] acpi_evaluate_reference:
14562 Invalid element in package (not a device reference)
14564 The method evaluation utility uses the new buffer allocation
14565 scheme instead of calling AcpiEvaluate Object twice.
14567 Added support for ECDT. This allows the use of the Embedded
14569 Controller before the namespace has been fully initialized, which
14570 is necessary for ACPI 2.0 support, and for some laptops to
14571 initialize properly. (Laptops using ECDT are still rare, so only
14572 limited testing was performed of the added functionality.)
14574 Fixed memory leaks in the EC driver.
14576 Eliminated a brittle code structure in acpi_bus_init().
14578 Eliminated the acpi_evaluate() helper function in utils.c. It is
14579 no longer needed since acpi_evaluate_object can optionally
14580 allocate memory for the return object.
14582 Implemented fix for keyboard hang when getting battery readings on
14583 some systems (Stephen White)
14585 PCI IRQ routing update (Dominik Brodowski)
14587 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
14590 ----------------------------------------
14591 11 June 2002. Summary of changes for this release.
14594 1) ACPI CA Core Subsystem Version 20020611:
14596 Fixed a reported problem where constants such as Zero and One
14597 appearing within _PRT packages were not handled correctly within
14598 the resource manager code. Originally reported against the ASL
14599 compiler because the code generator now optimizes integers to
14600 their minimal AML representation (i.e. AML constants if possible.)
14601 The _PRT code now handles all AML constant opcodes correctly
14602 (Zero, One, Ones, Revision).
14604 Fixed a problem with the Concatenate operator in the AML
14605 interpreter where a buffer result object was incorrectly marked as
14606 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
14608 All package sub-objects are now fully resolved before they are
14609 returned from the external ACPI interfaces. This means that name
14610 strings are resolved to object handles, and constant operators
14611 (Zero, One, Ones, Revision) are resolved to Integers.
14613 Implemented immediate resolution of the AML Constant opcodes
14614 (Zero, One, Ones, Revision) to Integer objects upon detection
14615 within the AML stream. This has simplified and reduced the
14616 generated code size of the subsystem by eliminating about 10
14617 switch statements for these constants (which previously were
14618 contained in Reference objects.) The complicating issues are that
14619 the Zero opcode is used as a "placeholder" for unspecified
14620 optional target operands and stores to constants are defined to be
14623 Code and Data Size: Current core subsystem library sizes are shown
14624 below. These are the code and data sizes for the acpica.lib
14625 produced by the Microsoft Visual C++ 6.0 compiler, and these
14626 values do not include any ACPI driver or OSPM code. The debug
14627 version of the code includes the debug output trace mechanism and
14628 has a larger code and data size. Note that these values will vary
14629 depending on the efficiency of the compiler and the compiler
14630 options used during generation.
14633 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14634 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14636 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14637 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14643 Added preliminary support for obtaining _TRA data for PCI root
14644 bridges (Bjorn Helgaas).
14647 3) iASL Compiler Version X2046:
14649 Fixed a problem where the "_DDN" reserved name was defined to be a
14650 control method with one argument. There are no arguments, and
14651 _DDN does not have to be a control method.
14653 Fixed a problem with the Linux version of the compiler where the
14654 source lines printed with error messages were the wrong lines.
14655 This turned out to be the "LF versus CR/LF" difference between
14656 Windows and Unix. This appears to be the longstanding issue
14657 concerning listing output and error messages.
14659 Fixed a problem with the Linux version of compiler where opcode
14660 names within error messages were wrong. This was caused by a
14661 slight difference in the output of the Flex tool on Linux versus
14664 Fixed a problem with the Linux compiler where the hex output files
14665 contained some garbage data caused by an internal buffer overrun.
14668 ----------------------------------------
14669 17 May 2002. Summary of changes for this release.
14672 1) ACPI CA Core Subsystem Version 20020517:
14674 Implemented a workaround to an BIOS bug discovered on the HP
14675 OmniBook where the FADT revision number and the table size are
14676 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
14677 behavior is to fallback to using only the ACPI 1.0 fields of the
14678 FADT if the table is too small to be a ACPI 2.0 table as claimed
14679 by the revision number. Although this is a BIOS bug, this is a
14680 case where the workaround is simple enough and with no side
14681 effects, so it seemed prudent to add it. A warning message is
14684 Implemented minimum size checks for the fixed-length ACPI tables -
14685 - the FADT and FACS, as well as consistency checks between the
14686 revision number and the table size.
14688 Fixed a reported problem in the table override support where the
14689 new table pointer was incorrectly treated as a physical address
14690 instead of a logical address.
14692 Eliminated the use of the AE_AML_ERROR exception and replaced it
14693 with more descriptive codes.
14695 Fixed a problem where an exception would occur if an ASL Field was
14696 defined with no named Field Units underneath it (used by some
14699 Code and Data Size: Current core subsystem library sizes are shown
14700 below. These are the code and data sizes for the acpica.lib
14701 produced by the Microsoft Visual C++ 6.0 compiler, and these
14702 values do not include any ACPI driver or OSPM code. The debug
14703 version of the code includes the debug output trace mechanism and
14704 has a larger code and data size. Note that these values will vary
14705 depending on the efficiency of the compiler and the compiler
14706 options used during generation.
14709 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14710 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14712 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14713 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14719 Much work done on ACPI init (MADT and PCI IRQ routing support).
14720 (Paul D. and Dominik Brodowski)
14722 Fix PCI IRQ-related panic on boot (Sam Revitch)
14724 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
14726 Fix "MHz" typo (Dominik Brodowski)
14728 Fix RTC year 2000 issue (Dominik Brodowski)
14730 Preclude multiple button proc entries (Eric Brunet)
14732 Moved arch-specific code out of include/platform/aclinux.h
14734 3) iASL Compiler Version X2044:
14736 Implemented error checking for the string used in the EISAID macro
14737 (Usually used in the definition of the _HID object.) The code now
14738 strictly enforces the PnP format - exactly 7 characters, 3
14739 uppercase letters and 4 hex digits.
14741 If a raw string is used in the definition of the _HID object
14742 (instead of the EISAID macro), the string must contain all
14743 alphanumeric characters (e.g., "*PNP0011" is not allowed because
14746 Implemented checking for invalid use of ACPI reserved names for
14747 most of the name creation operators (Name, Device, Event, Mutex,
14748 OperationRegion, PowerResource, Processor, and ThermalZone.)
14749 Previously, this check was only performed for control methods.
14751 Implemented an additional check on the Name operator to emit an
14752 error if a reserved name that must be implemented in ASL as a
14753 control method is used. We know that a reserved name must be a
14754 method if it is defined with input arguments.
14756 The warning emitted when a namespace object reference is not found
14757 during the cross reference phase has been changed into an error.
14758 The "External" directive should be used for names defined in other
14762 4) Tools and Utilities
14764 The 16-bit tools (adump16 and aexec16) have been regenerated and
14767 Fixed a problem with the output of both acpidump and adump16 where
14768 the indentation of closing parentheses and brackets was not
14770 aligned properly with the parent block.
14773 ----------------------------------------
14774 03 May 2002. Summary of changes for this release.
14777 1) ACPI CA Core Subsystem Version 20020503:
14779 Added support a new OSL interface that allows the host operating
14781 system software to override the DSDT found in the firmware -
14782 AcpiOsTableOverride. With this interface, the OSL can examine the
14783 version of the firmware DSDT and replace it with a different one
14786 Added new external interfaces for accessing ACPI registers from
14787 device drivers and other system software - AcpiGetRegister and
14788 AcpiSetRegister. This was simply an externalization of the
14789 existing AcpiHwBitRegister interfaces.
14791 Fixed a regression introduced in the previous build where the
14792 ASL/AML CreateField operator always returned an error,
14793 "destination must be a NS Node".
14795 Extended the maximum time (before failure) to successfully enable
14796 ACPI mode to 3 seconds.
14798 Code and Data Size: Current core subsystem library sizes are shown
14799 below. These are the code and data sizes for the acpica.lib
14800 produced by the Microsoft Visual C++ 6.0 compiler, and these
14801 values do not include any ACPI driver or OSPM code. The debug
14802 version of the code includes the debug output trace mechanism and
14803 has a larger code and data size. Note that these values will vary
14804 depending on the efficiency of the compiler and the compiler
14805 options used during generation.
14808 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14809 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14811 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14812 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14817 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
14818 free. While 3 out of 4 of our in-house systems work fine, the last
14819 one still hangs when testing the LAPIC timer.
14821 Renamed many files in 2.5 kernel release to omit "acpi_" from the
14824 Added warning on boot for Presario 711FR.
14826 Sleep improvements (Pavel Machek)
14828 ACPI can now be built without CONFIG_PCI enabled.
14830 IA64: Fixed memory map functions (JI Lee)
14833 3) iASL Compiler Version X2043:
14835 Added support to allow the compiler to be integrated into the MS
14836 VC++ development environment for one-button compilation of single
14837 files or entire projects -- with error-to-source-line mapping.
14839 Implemented support for compile-time constant folding for the
14840 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
14841 specification. This allows the ASL writer to use expressions
14842 instead of Integer/Buffer/String constants in terms that must
14843 evaluate to constants at compile time and will also simplify the
14844 emitted AML in any such sub-expressions that can be folded
14845 (evaluated at compile-time.) This increases the size of the
14846 compiler significantly because a portion of the ACPI CA AML
14847 interpreter is included within the compiler in order to pre-
14848 evaluate constant expressions.
14851 Fixed a problem with the "Unicode" ASL macro that caused the
14852 compiler to fault. (This macro is used in conjunction with the
14853 _STR reserved name.)
14855 Implemented an AML opcode optimization to use the Zero, One, and
14856 Ones opcodes where possible to further reduce the size of integer
14857 constants and thus reduce the overall size of the generated AML
14860 Implemented error checking for new reserved terms for ACPI version
14863 Implemented the -qr option to display the current list of ACPI
14864 reserved names known to the compiler.
14866 Implemented the -qc option to display the current list of ASL
14867 operators that are allowed within constant expressions and can
14868 therefore be folded at compile time if the operands are constants.
14873 Updated the Programmer's Reference for new interfaces, data types,
14874 and memory allocation model options.
14876 Updated the iASL Compiler User Reference to apply new format and
14877 add information about new features and options.
14879 ----------------------------------------
14880 19 April 2002. Summary of changes for this release.
14882 1) ACPI CA Core Subsystem Version 20020419:
14884 The source code base for the Core Subsystem has been completely
14885 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
14886 versions. The Lint option files used are included in the
14887 /acpi/generate/lint directory.
14889 Implemented enhanced status/error checking across the entire
14890 Hardware manager subsystem. Any hardware errors (reported from
14891 the OSL) are now bubbled up and will abort a running control
14895 Fixed a problem where the per-ACPI-table integer width (32 or 64)
14896 was stored only with control method nodes, causing a fault when
14897 non-control method code was executed during table loading. The
14898 solution implemented uses a global variable to indicate table
14899 width across the entire ACPI subsystem. Therefore, ACPI CA does
14900 not support mixed integer widths across different ACPI tables
14903 Fixed a problem where NULL extended fields (X fields) in an ACPI
14904 2.0 ACPI FADT caused the table load to fail. Although the
14905 existing ACPI specification is a bit fuzzy on this topic, the new
14906 behavior is to fall back on a ACPI 1.0 field if the corresponding
14907 ACPI 2.0 X field is zero (even though the table revision indicates
14908 a full ACPI 2.0 table.) The ACPI specification will be updated to
14909 clarify this issue.
14911 Fixed a problem with the SystemMemory operation region handler
14912 where memory was always accessed byte-wise even if the AML-
14913 specified access width was larger than a byte. This caused
14914 problems on systems with memory-mapped I/O. Memory is now
14915 accessed with the width specified. On systems that do not support
14916 non-aligned transfers, a check is made to guarantee proper address
14917 alignment before proceeding in order to avoid an AML-caused
14918 alignment fault within the kernel.
14921 Fixed a problem with the ExtendedIrq resource where only one byte
14922 of the 4-byte Irq field was extracted.
14924 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
14925 function was out of date and required a rewrite.
14927 Code and Data Size: Current core subsystem library sizes are shown
14928 below. These are the code and data sizes for the acpica.lib
14929 produced by the Microsoft Visual C++ 6.0 compiler, and these
14930 values do not include any ACPI driver or OSPM code. The debug
14931 version of the code includes the debug output trace mechanism and
14932 has a larger code and data size. Note that these values will vary
14933 depending on the efficiency of the compiler and the compiler
14934 options used during generation.
14937 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14938 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14940 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14941 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14946 PCI IRQ routing fixes (Dominik Brodowski)
14949 3) iASL Compiler Version X2042:
14951 Implemented an additional compile-time error check for a field
14952 unit whose size + minimum access width would cause a run-time
14953 access beyond the end-of-region. Previously, only the field size
14954 itself was checked.
14956 The Core subsystem and iASL compiler now share a common parse
14957 object in preparation for compile-time evaluation of the type
14958 3/4/5 ASL operators.
14961 ----------------------------------------
14962 Summary of changes for this release: 03_29_02
14964 1) ACPI CA Core Subsystem Version 20020329:
14966 Implemented support for late evaluation of TermArg operands to
14967 Buffer and Package objects. This allows complex expressions to be
14968 used in the declarations of these object types.
14970 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
14971 1.0, if the field was larger than 32 bits, it was returned as a
14972 buffer - otherwise it was returned as an integer. In ACPI 2.0,
14973 the field is returned as a buffer only if the field is larger than
14974 64 bits. The TableRevision is now considered when making this
14975 conversion to avoid incompatibility with existing ASL code.
14977 Implemented logical addressing for AcpiOsGetRootPointer. This
14978 allows an RSDP with either a logical or physical address. With
14979 this support, the host OS can now override all ACPI tables with
14980 one logical RSDP. Includes implementation of "typed" pointer
14981 support to allow a common data type for both physical and logical
14982 pointers internally. This required a change to the
14983 AcpiOsGetRootPointer interface.
14985 Implemented the use of ACPI 2.0 Generic Address Structures for all
14986 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
14987 mapped I/O for these ACPI features.
14989 Initialization now ignores not only non-required tables (All
14990 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
14991 not validate the table headers of unrecognized tables.
14993 Fixed a problem where a notify handler could only be
14994 installed/removed on an object of type Device. All "notify"
14996 objects are now supported -- Devices, Processor, Power, and
14999 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15000 critical information is returned when this debug level is enabled.
15002 Code and Data Size: Current core subsystem library sizes are shown
15003 below. These are the code and data sizes for the acpica.lib
15004 produced by the Microsoft Visual C++ 6.0 compiler, and these
15005 values do not include any ACPI driver or OSPM code. The debug
15006 version of the code includes the debug output trace mechanism and
15007 has a larger code and data size. Note that these values will vary
15008 depending on the efficiency of the compiler and the compiler
15009 options used during generation.
15012 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15013 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15015 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15016 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15021 The processor driver (acpi_processor.c) now fully supports ACPI
15022 2.0-based processor performance control (e.g. Intel(R)
15023 SpeedStep(TM) technology) Note that older laptops that only have
15024 the Intel "applet" interface are not supported through this. The
15025 'limit' and 'performance' interface (/proc) are fully functional.
15026 [Note that basic policy for controlling performance state
15027 transitions will be included in the next version of ospmd.] The
15028 idle handler was modified to more aggressively use C2, and PIIX4
15029 errata handling underwent a complete overhaul (big thanks to
15030 Dominik Brodowski).
15032 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15033 based devices in the ACPI namespace are now dynamically bound
15034 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15035 This allows, among other things, ACPI to resolve bus numbers for
15036 subordinate PCI bridges.
15038 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15039 entries defined underneath PCI bridges.
15041 Added IBM 600E to bad bios list due to invalid _ADR value for
15042 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15044 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15045 (acpi.c, mpparse.c) -- stay tuned.
15047 Added back visual differentiation between fixed-feature and
15048 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15049 button/power/PWRF) to simplify button identification.
15051 We no longer use -Wno-unused when compiling debug. Please ignore
15052 any "_THIS_MODULE defined but not used" messages.
15054 Can now shut down the system using "magic sysrq" key.
15057 3) iASL Compiler version 2041:
15059 Fixed a problem where conversion errors for hex/octal/decimal
15060 constants were not reported.
15062 Implemented a fix for the General Register template Address field.
15063 This field was 8 bits when it should be 64.
15065 Fixed a problem where errors/warnings were no longer being emitted
15066 within the listing output file.
15068 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15069 exactly 4 characters, alphanumeric only.
15074 ----------------------------------------
15075 Summary of changes for this release: 03_08_02
15078 1) ACPI CA Core Subsystem Version 20020308:
15080 Fixed a problem with AML Fields where the use of the "AccessAny"
15081 keyword could cause an interpreter error due to attempting to read
15082 or write beyond the end of the parent Operation Region.
15084 Fixed a problem in the SystemMemory Operation Region handler where
15085 an attempt was made to map memory beyond the end of the region.
15086 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15087 errors on some Linux systems.
15089 Fixed a problem where the interpreter/namespace "search to root"
15090 algorithm was not functioning for some object types. Relaxed the
15091 internal restriction on the search to allow upsearches for all
15092 external object types as well as most internal types.
15097 We now use safe_halt() macro versus individual calls to sti | hlt.
15099 Writing to the processor limit interface should now work. "echo 1"
15100 will increase the limit, 2 will decrease, and 0 will reset to the
15107 Fixed segfault on Linux version.
15110 ----------------------------------------
15111 Summary of changes for this release: 02_25_02
15113 1) ACPI CA Core Subsystem:
15116 Fixed a problem where the GPE bit masks were not initialized
15117 properly, causing erratic GPE behavior.
15119 Implemented limited support for multiple calling conventions. The
15120 code can be generated with either the VPL (variable parameter
15121 list, or "C") convention, or the FPL (fixed parameter list, or
15122 "Pascal") convention. The core subsystem is about 3.4% smaller
15123 when generated with FPL.
15128 Re-add some /proc/acpi/event functionality that was lost during
15131 Resolved issue with /proc events for fixed-feature buttons showing
15132 up as the system device.
15134 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15136 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15138 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15140 Fixed limit interface & usage to fix bugs with passive cooling
15143 Restructured PRT support.
15146 ----------------------------------------
15147 Summary of changes for this label: 02_14_02
15150 1) ACPI CA Core Subsystem:
15152 Implemented support in AcpiLoadTable to allow loading of FACS and
15155 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15156 been removed. All 64-bit platforms should be migrated to the ACPI
15157 2.0 tables. The actbl71.h header has been removed from the source
15160 All C macros defined within the subsystem have been prefixed with
15161 "ACPI_" to avoid collision with other system include files.
15163 Removed the return value for the two AcpiOsPrint interfaces, since
15164 it is never used and causes lint warnings for ignoring the return
15167 Added error checking to all internal mutex acquire and release
15168 calls. Although a failure from one of these interfaces is
15169 probably a fatal system error, these checks will cause the
15170 immediate abort of the currently executing method or interface.
15172 Fixed a problem where the AcpiSetCurrentResources interface could
15173 fault. This was a side effect of the deployment of the new memory
15176 Fixed a couple of problems with the Global Lock support introduced
15177 in the last major build. The "common" (1.0/2.0) internal FACS was
15178 being overwritten with the FACS signature and clobbering the
15179 Global Lock pointer. Also, the actual firmware FACS was being
15180 unmapped after construction of the "common" FACS, preventing
15181 access to the actual Global Lock field within it. The "common"
15182 internal FACS is no longer installed as an actual ACPI table; it
15183 is used simply as a global.
15185 Code and Data Size: Current core subsystem library sizes are shown
15186 below. These are the code and data sizes for the acpica.lib
15187 produced by the Microsoft Visual C++ 6.0 compiler, and these
15188 values do not include any ACPI driver or OSPM code. The debug
15189 version of the code includes the debug output trace mechanism and
15190 has a larger code and data size. Note that these values will vary
15191 depending on the efficiency of the compiler and the compiler
15192 options used during generation.
15194 Previous Release (02_07_01)
15195 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15196 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15198 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15199 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15204 Updated Linux-specific code for core macro and OSL interface
15205 changes described above.
15207 Improved /proc/acpi/event. It now can be opened only once and has
15208 proper poll functionality.
15210 Fixed and restructured power management (acpi_bus).
15212 Only create /proc "view by type" when devices of that class exist.
15214 Fixed "charging/discharging" bug (and others) in acpi_battery.
15216 Improved thermal zone code.
15219 3) ASL Compiler, version X2039:
15222 Implemented the new compiler restriction on ASL String hex/octal
15223 escapes to non-null, ASCII values. An error results if an invalid
15224 value is used. (This will require an ACPI 2.0 specification
15227 AML object labels that are output to the optional C and ASM source
15228 are now prefixed with both the ACPI table signature and table ID
15229 to help guarantee uniqueness within a large BIOS project.
15232 ----------------------------------------
15233 Summary of changes for this label: 02_01_02
15235 1) ACPI CA Core Subsystem:
15237 ACPI 2.0 support is complete in the entire Core Subsystem and the
15238 ASL compiler. All new ACPI 2.0 operators are implemented and all
15239 other changes for ACPI 2.0 support are complete. With
15240 simultaneous code and data optimizations throughout the subsystem,
15241 ACPI 2.0 support has been implemented with almost no additional
15242 cost in terms of code and data size.
15244 Implemented a new mechanism for allocation of return buffers. If
15245 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
15246 be allocated on behalf of the caller. Consolidated all return
15247 buffer validation and allocation to a common procedure. Return
15248 buffers will be allocated via the primary OSL allocation interface
15249 since it appears that a separate pool is not needed by most users.
15250 If a separate pool is required for these buffers, the caller can
15251 still use the original mechanism and pre-allocate the buffer(s).
15253 Implemented support for string operands within the DerefOf
15256 Restructured the Hardware and Event managers to be table driven,
15257 simplifying the source code and reducing the amount of generated
15260 Split the common read/write low-level ACPI register bitfield
15261 procedure into a separate read and write, simplifying the code
15264 Obsoleted the AcpiOsCallocate OSL interface. This interface was
15265 used only a handful of times and didn't have enough critical mass
15266 for a separate interface. Replaced with a common calloc procedure
15269 Fixed a reported problem with the GPE number mapping mechanism
15270 that allows GPE1 numbers to be non-contiguous with GPE0.
15271 Reorganized the GPE information and shrunk a large array that was
15272 originally large enough to hold info for all possible GPEs (256)
15273 to simply large enough to hold all GPEs up to the largest GPE
15274 number on the machine.
15276 Fixed a reported problem with resource structure alignment on 64-
15279 Changed the AcpiEnableEvent and AcpiDisableEvent external
15280 interfaces to not require any flags for the common case of
15281 enabling/disabling a GPE.
15283 Implemented support to allow a "Notify" on a Processor object.
15285 Most TBDs in comments within the source code have been resolved
15289 Fixed a problem in the interpreter where a standalone parent
15290 prefix (^) was not handled correctly in the interpreter and
15293 Removed obsolete and unnecessary GPE save/restore code.
15295 Implemented Field support in the ASL Load operator. This allows a
15296 table to be loaded from a named field, in addition to loading a
15297 table directly from an Operation Region.
15299 Implemented timeout and handle support in the external Global Lock
15302 Fixed a problem in the AcpiDump utility where pathnames were no
15303 longer being generated correctly during the dump of named objects.
15305 Modified the AML debugger to give a full display of if/while
15306 predicates instead of just one AML opcode at a time. (The
15307 predicate can have several nested ASL statements.) The old method
15308 was confusing during single stepping.
15310 Code and Data Size: Current core subsystem library sizes are shown
15311 below. These are the code and data sizes for the acpica.lib
15312 produced by the Microsoft Visual C++ 6.0 compiler, and these
15313 values do not include any ACPI driver or OSPM code. The debug
15314 version of the code includes the debug output trace mechanism and
15315 has a larger code and data size. Note that these values will vary
15316 depending on the efficiency of the compiler and the compiler
15317 options used during generation.
15319 Previous Release (12_18_01)
15320 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15321 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15323 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15324 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15328 Implemented fix for PIIX reverse throttling errata (Processor
15331 Added new Limit interface (Processor and Thermal drivers)
15333 New thermal policy (Thermal driver)
15335 Many updates to /proc
15337 Battery "low" event support (Battery driver)
15339 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
15341 IA32 - IA64 initialization unification, no longer experimental
15343 Menuconfig options redesigned
15345 3) ASL Compiler, version X2037:
15347 Implemented several new output features to simplify integration of
15348 AML code into firmware: 1) Output the AML in C source code with
15349 labels for each named ASL object. The original ASL source code
15350 is interleaved as C comments. 2) Output the AML in ASM source code
15351 with labels and interleaved ASL source. 3) Output the AML in
15352 raw hex table form, in either C or ASM.
15354 Implemented support for optional string parameters to the
15355 LoadTable operator.
15357 Completed support for embedded escape sequences within string
15358 literals. The compiler now supports all single character escapes
15359 as well as the Octal and Hex escapes. Note: the insertion of a
15360 null byte into a string literal (via the hex/octal escape) causes
15361 the string to be immediately terminated. A warning is issued.
15363 Fixed a problem where incorrect AML was generated for the case
15364 where an ASL namepath consists of a single parent prefix (
15366 ) with no trailing name segments.
15368 The compiler has been successfully generated with a 64-bit C
15374 ----------------------------------------
15375 Summary of changes for this label: 12_18_01
15379 Enhanced blacklist with reason and severity fields. Any table's
15380 signature may now be used to identify a blacklisted system.
15382 Call _PIC control method to inform the firmware which interrupt
15383 model the OS is using. Turn on any disabled link devices.
15385 Cleaned up busmgr /proc error handling (Andreas Dilger)
15387 2) ACPI CA Core Subsystem:
15389 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
15392 Completed implementation of the ACPI 2.0 "Continue",
15393 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
15394 operators. All new ACPI 2.0 operators are now implemented in both
15395 the ASL compiler and the AML interpreter. The only remaining ACPI
15396 2.0 task is support for the String data type in the DerefOf
15397 operator. Fixed a problem with AcquireMutex where the status code
15398 was lost if the caller had to actually wait for the mutex.
15400 Increased the maximum ASL Field size from 64K bits to 4G bits.
15402 Completed implementation of the external Global Lock interfaces --
15403 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
15404 Handler parameters were added.
15406 Completed another pass at removing warnings and issues when
15407 compiling with 64-bit compilers. The code now compiles cleanly
15408 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
15409 add and subtract (diff) macros have changed considerably.
15412 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
15413 64-bit platforms, 32-bits on all others. This type is used
15414 wherever memory allocation and/or the C sizeof() operator is used,
15415 and affects the OSL memory allocation interfaces AcpiOsAllocate
15416 and AcpiOsCallocate.
15418 Implemented sticky user breakpoints in the AML debugger.
15420 Code and Data Size: Current core subsystem library sizes are shown
15421 below. These are the code and data sizes for the acpica.lib
15422 produced by the Microsoft Visual C++ 6.0 compiler, and these
15423 values do not include any ACPI driver or OSPM code. The debug
15424 version of the code includes the debug output trace mechanism and
15425 has a larger code and data size. Note that these values will vary
15426 depending on the efficiency of the compiler and the compiler
15427 options used during generation.
15429 Previous Release (12_05_01)
15430 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15431 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15433 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15434 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15436 3) ASL Compiler, version X2034:
15438 Now checks for (and generates an error if detected) the use of a
15439 Break or Continue statement without an enclosing While statement.
15442 Successfully generated the compiler with the Intel 64-bit C
15445 ----------------------------------------
15446 Summary of changes for this label: 12_05_01
15448 1) ACPI CA Core Subsystem:
15450 The ACPI 2.0 CopyObject operator is fully implemented. This
15451 operator creates a new copy of an object (and is also used to
15452 bypass the "implicit conversion" mechanism of the Store operator.)
15454 The ACPI 2.0 semantics for the SizeOf operator are fully
15455 implemented. The change is that performing a SizeOf on a
15456 reference object causes an automatic dereference of the object to
15457 tha actual value before the size is evaluated. This behavior was
15458 undefined in ACPI 1.0.
15460 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
15461 have been implemented. The interrupt polarity and mode are now
15464 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
15465 appearing in Package objects were not properly converted to
15466 integers when the internal Package was converted to an external
15467 object (via the AcpiEvaluateObject interface.)
15469 Fixed a problem with the namespace object deletion mechanism for
15470 objects created by control methods. There were two parts to this
15471 problem: 1) Objects created during the initialization phase method
15472 parse were not being deleted, and 2) The object owner ID mechanism
15473 to track objects was broken.
15475 Fixed a problem where the use of the ASL Scope operator within a
15476 control method would result in an invalid opcode exception.
15478 Fixed a problem introduced in the previous label where the buffer
15479 length required for the _PRT structure was not being returned
15482 Code and Data Size: Current core subsystem library sizes are shown
15483 below. These are the code and data sizes for the acpica.lib
15484 produced by the Microsoft Visual C++ 6.0 compiler, and these
15485 values do not include any ACPI driver or OSPM code. The debug
15486 version of the code includes the debug output trace mechanism and
15487 has a larger code and data size. Note that these values will vary
15488 depending on the efficiency of the compiler and the compiler
15489 options used during generation.
15491 Previous Release (11_20_01)
15492 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15493 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15496 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15497 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15501 Updated all files to apply cleanly against 2.4.16.
15503 Added basic PCI Interrupt Routing Table (PRT) support for IA32
15504 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
15505 version supports both static and dyanmic PRT entries, but dynamic
15506 entries are treated as if they were static (not yet
15507 reconfigurable). Architecture- specific code to use this data is
15508 absent on IA32 but should be available shortly.
15510 Changed the initialization sequence to start the ACPI interpreter
15511 (acpi_init) prior to initialization of the PCI driver (pci_init)
15512 in init/main.c. This ordering is required to support PRT and
15513 facilitate other (future) enhancement. A side effect is that the
15514 ACPI bus driver and certain device drivers can no longer be loaded
15517 Modified the 'make menuconfig' options to allow PCI Interrupt
15518 Routing support to be included without the ACPI Bus and other
15521 3) ASL Compiler, version X2033:
15523 Fixed some issues with the use of the new CopyObject and
15524 DataTableRegion operators. Both are fully functional.
15526 ----------------------------------------
15527 Summary of changes for this label: 11_20_01
15529 20 November 2001. Summary of changes for this release.
15531 1) ACPI CA Core Subsystem:
15533 Updated Index support to match ACPI 2.0 semantics. Storing a
15534 Integer, String, or Buffer to an Index of a Buffer will store only
15535 the least-significant byte of the source to the Indexed buffer
15536 byte. Multiple writes are not performed.
15538 Fixed a problem where the access type used in an AccessAs ASL
15539 operator was not recorded correctly into the field object.
15541 Fixed a problem where ASL Event objects were created in a
15542 signalled state. Events are now created in an unsignalled state.
15544 The internal object cache is now purged after table loading and
15545 initialization to reduce the use of dynamic kernel memory -- on
15546 the assumption that object use is greatest during the parse phase
15547 of the entire table (versus the run-time use of individual control
15550 ACPI 2.0 variable-length packages are now fully operational.
15552 Code and Data Size: Code and Data optimizations have permitted new
15553 feature development with an actual reduction in the library size.
15554 Current core subsystem library sizes are shown below. These are
15555 the code and data sizes for the acpica.lib produced by the
15556 Microsoft Visual C++ 6.0 compiler, and these values do not include
15557 any ACPI driver or OSPM code. The debug version of the code
15558 includes the debug output trace mechanism and has a larger code
15559 and data size. Note that these values will vary depending on the
15560 efficiency of the compiler and the compiler options used during
15563 Previous Release (11_09_01):
15564 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15565 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15568 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15569 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15573 Enhanced the ACPI boot-time initialization code to allow the use
15574 of Local APIC tables for processor enumeration on IA-32, and to
15575 pave the way for a fully MPS-free boot (on SMP systems) in the
15576 near future. This functionality replaces
15577 arch/i386/kernel/acpitables.c, which was introduced in an earlier
15578 2.4.15-preX release. To enable this feature you must add
15579 "acpi_boot=on" to the kernel command line -- see the help entry
15580 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
15583 Restructured the configuration options to allow boot-time table
15584 parsing support without inclusion of the ACPI Interpreter (and
15587 NOTE: This release does not include fixes for the reported events,
15588 power-down, and thermal passive cooling issues (coming soon).
15592 Added additional typechecking for Fields within restricted access
15593 Operation Regions. All fields within EC and CMOS regions must be
15594 declared with ByteAcc. All fields withing SMBus regions must be
15595 declared with the BufferAcc access type.
15597 Fixed a problem where the listing file output of control methods
15598 no longer interleaved the actual AML code with the ASL source
15604 ----------------------------------------
15605 Summary of changes for this label: 11_09_01
15607 1) ACPI CA Core Subsystem:
15609 Implemented ACPI 2.0-defined support for writes to fields with a
15610 Buffer, String, or Integer source operand that is smaller than the
15611 target field. In these cases, the source operand is zero-extended
15612 to fill the target field.
15614 Fixed a problem where a Field starting bit offset (within the
15615 parent operation region) was calculated incorrectly if the
15617 alignment of the field differed from the access width. This
15618 affected CreateWordField, CreateDwordField, CreateQwordField, and
15619 possibly other fields that use the "AccessAny" keyword.
15621 Fixed a problem introduced in the 11_02_01 release where indirect
15622 stores through method arguments did not operate correctly.
15626 Implemented boot-time ACPI table parsing support
15627 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
15628 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
15629 legacy BIOS interfaces (e.g. MPS) for the configuration of system
15630 processors, memory, and interrupts during setup_arch(). Note that
15631 this patch does not include the required architecture-specific
15632 changes required to apply this information -- subsequent patches
15633 will be posted for both IA32 and IA64 to achieve this.
15635 Added low-level sleep support for IA32 platforms, courtesy of Pat
15636 Mochel. This allows IA32 systems to transition to/from various
15637 sleeping states (e.g. S1, S3), although the lack of a centralized
15638 driver model and power-manageable drivers will prevent its
15639 (successful) use on most systems.
15641 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
15642 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
15643 tables" option, etc.
15645 Increased the default timeout for the EC driver from 1ms to 10ms
15646 (1000 cycles of 10us) to try to address AE_TIME errors during EC
15649 ----------------------------------------
15650 Summary of changes for this label: 11_02_01
15652 1) ACPI CA Core Subsystem:
15654 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
15655 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
15658 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
15659 changes to support ACPI 2.0 Qword field access. Read/Write
15660 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
15661 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
15662 the value parameter for the address space handler interface is now
15663 an ACPI_INTEGER. OSL implementations of these interfaces must now
15664 handle the case where the Width parameter is 64.
15666 Index Fields: Fixed a problem where unaligned bit assembly and
15667 disassembly for IndexFields was not supported correctly.
15669 Index and Bank Fields: Nested Index and Bank Fields are now
15670 supported. During field access, a check is performed to ensure
15671 that the value written to an Index or Bank register is not out of
15672 the range of the register. The Index (or Bank) register is
15673 written before each access to the field data. Future support will
15674 include allowing individual IndexFields to be wider than the
15675 DataRegister width.
15677 Fields: Fixed a problem where the AML interpreter was incorrectly
15678 attempting to write beyond the end of a Field/OpRegion. This was
15679 a boundary case that occurred when a DWORD field was written to a
15680 BYTE access OpRegion, forcing multiple writes and causing the
15681 interpreter to write one datum too many.
15683 Fields: Fixed a problem with Field/OpRegion access where the
15684 starting bit address of a field was incorrectly calculated if the
15685 current access type was wider than a byte (WordAcc, DwordAcc, or
15688 Fields: Fixed a problem where forward references to individual
15689 FieldUnits (individual Field names within a Field definition) were
15690 not resolved during the AML table load.
15692 Fields: Fixed a problem where forward references from a Field
15693 definition to the parent Operation Region definition were not
15694 resolved during the AML table load.
15696 Fields: Duplicate FieldUnit names within a scope are now detected
15697 during AML table load.
15699 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
15700 returned an incorrect name for the root node.
15702 Code and Data Size: Code and Data optimizations have permitted new
15703 feature development with an actual reduction in the library size.
15704 Current core subsystem library sizes are shown below. These are
15705 the code and data sizes for the acpica.lib produced by the
15706 Microsoft Visual C++ 6.0 compiler, and these values do not include
15707 any ACPI driver or OSPM code. The debug version of the code
15708 includes the debug output trace mechanism and has a larger code
15709 and data size. Note that these values will vary depending on the
15710 efficiency of the compiler and the compiler options used during
15713 Previous Release (10_18_01):
15714 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15715 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15718 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15719 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15723 Improved /proc processor output (Pavel Machek) Re-added
15724 MODULE_LICENSE("GPL") to all modules.
15726 3) ASL Compiler version X2030:
15728 Duplicate FieldUnit names within a scope are now detected and
15733 Programmer Reference updated to reflect OSL and address space
15734 handler interface changes described above.
15736 ----------------------------------------
15737 Summary of changes for this label: 10_18_01
15739 ACPI CA Core Subsystem:
15741 Fixed a problem with the internal object reference count mechanism
15742 that occasionally caused premature object deletion. This resolves
15743 all of the outstanding problem reports where an object is deleted
15744 in the middle of an interpreter evaluation. Although this problem
15745 only showed up in rather obscure cases, the solution to the
15746 problem involved an adjustment of all reference counts involving
15747 objects attached to namespace nodes.
15749 Fixed a problem with Field support in the interpreter where
15750 writing to an aligned field whose length is an exact multiple (2
15751 or greater) of the field access granularity would cause an attempt
15752 to write beyond the end of the field.
15754 The top level AML opcode execution functions within the
15755 interpreter have been renamed with a more meaningful and
15756 consistent naming convention. The modules exmonad.c and
15757 exdyadic.c were eliminated. New modules are exoparg1.c,
15758 exoparg2.c, exoparg3.c, and exoparg6.c.
15760 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
15762 Fixed a problem where the AML debugger was causing some internal
15763 objects to not be deleted during subsystem termination.
15765 Fixed a problem with the external AcpiEvaluateObject interface
15766 where the subsystem would fault if the named object to be
15767 evaluated refered to a constant such as Zero, Ones, etc.
15769 Fixed a problem with IndexFields and BankFields where the
15770 subsystem would fault if the index, data, or bank registers were
15771 not defined in the same scope as the field itself.
15773 Added printf format string checking for compilers that support
15774 this feature. Corrected more than 50 instances of issues with
15775 format specifiers within invocations of ACPI_DEBUG_PRINT
15776 throughout the core subsystem code.
15778 The ASL "Revision" operator now returns the ACPI support level
15779 implemented in the core - the value "2" since the ACPI 2.0 support
15780 is more than 50% implemented.
15782 Enhanced the output of the AML debugger "dump namespace" command
15783 to output in a more human-readable form.
15785 Current core subsystem library code sizes are shown below. These
15787 are the code and data sizes for the acpica.lib produced by the
15788 Microsoft Visual C++ 6.0 compiler, and these values do not include
15789 any ACPI driver or OSPM code. The debug version of the code
15790 includes the full debug trace mechanism -- leading to a much
15792 larger code and data size. Note that these values will vary
15793 depending on the efficiency of the compiler and the compiler
15794 options used during generation.
15796 Previous Label (09_20_01):
15797 Non-Debug Version: 65K Code, 5K Data, 70K Total
15798 Debug Version: 138K Code, 58K Data, 196K Total
15802 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15803 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15807 Implemented a "Bad BIOS Blacklist" to track machines that have
15808 known ASL/AML problems.
15810 Enhanced the /proc interface for the thermal zone driver and added
15811 support for _HOT (the critical suspend trip point). The 'info'
15812 file now includes threshold/policy information, and allows setting
15813 of _SCP (cooling preference) and _TZP (polling frequency) values
15814 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
15815 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
15816 preference to the passive/quiet mode (if supported by the ASL).
15818 Implemented a workaround for a gcc bug that resuted in an OOPs
15819 when loading the control method battery driver.
15821 ----------------------------------------
15822 Summary of changes for this label: 09_20_01
15824 ACPI CA Core Subsystem:
15826 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
15827 modified to allow individual GPE levels to be flagged as wake-
15828 enabled (i.e., these GPEs are to remain enabled when the platform
15831 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
15832 support wake-enabled GPEs. This means that upon entering the
15833 sleep state, all GPEs that are not wake-enabled are disabled.
15834 When leaving the sleep state, these GPEs are reenabled.
15836 A local double-precision divide/modulo module has been added to
15837 enhance portability to OS kernels where a 64-bit math library is
15838 not available. The new module is "utmath.c".
15840 Several optimizations have been made to reduce the use of CPU
15841 stack. Originally over 2K, the maximum stack usage is now below
15842 2K at 1860 bytes (1.82k)
15844 Fixed a problem with the AcpiGetFirmwareTable interface where the
15845 root table pointer was not mapped into a logical address properly.
15847 Fixed a problem where a NULL pointer was being dereferenced in the
15848 interpreter code for the ASL Notify operator.
15850 Fixed a problem where the use of the ASL Revision operator
15851 returned an error. This operator now returns the current version
15852 of the ACPI CA core subsystem.
15854 Fixed a problem where objects passed as control method parameters
15855 to AcpiEvaluateObject were always deleted at method termination.
15856 However, these objects may end up being stored into the namespace
15857 by the called method. The object reference count mechanism was
15858 applied to these objects instead of a force delete.
15860 Fixed a problem where static strings or buffers (contained in the
15861 AML code) that are declared as package elements within the ASL
15862 code could cause a fault because the interpreter would attempt to
15863 delete them. These objects are now marked with the "static
15864 object" flag to prevent any attempt to delete them.
15866 Implemented an interpreter optimization to use operands directly
15867 from the state object instead of extracting the operands to local
15868 variables. This reduces stack use and code size, and improves
15871 The module exxface.c was eliminated as it was an unnecessary extra
15874 Current core subsystem library code sizes are shown below. These
15875 are the code and data sizes for the acpica.lib produced by the
15876 Microsoft Visual C++ 6.0 compiler, and these values do not include
15877 any ACPI driver or OSPM code. The debug version of the code
15878 includes the full debug trace mechanism -- leading to a much
15879 larger code and data size. Note that these values will vary
15880 depending on the efficiency of the compiler and the compiler
15881 options used during generation.
15883 Non-Debug Version: 65K Code, 5K Data, 70K Total
15884 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
15885 Total (Previously 195K)
15889 Support for ACPI 2.0 64-bit integers has been added. All ACPI
15890 Integer objects are now 64 bits wide
15892 All Acpi data types and structures are now in lower case. Only
15893 Acpi macros are upper case for differentiation.
15897 Changes to the external interfaces as described above.
15899 ----------------------------------------
15900 Summary of changes for this label: 08_31_01
15902 ACPI CA Core Subsystem:
15904 A bug with interpreter implementation of the ASL Divide operator
15905 was found and fixed. The implicit function return value (not the
15906 explicit store operands) was returning the remainder instead of
15907 the quotient. This was a longstanding bug and it fixes several
15908 known outstanding issues on various platforms.
15910 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
15911 been further optimized for size. There are 700 invocations of the
15912 DEBUG_PRINT macro alone, so each optimization reduces the size of
15913 the debug version of the subsystem significantly.
15915 A stack trace mechanism has been implemented. The maximum stack
15916 usage is about 2K on 32-bit platforms. The debugger command "stat
15917 stack" will display the current maximum stack usage.
15919 All public symbols and global variables within the subsystem are
15920 now prefixed with the string "Acpi". This keeps all of the
15921 symbols grouped together in a kernel map, and avoids conflicts
15922 with other kernel subsystems.
15924 Most of the internal fixed lookup tables have been moved into the
15925 code segment via the const operator.
15927 Several enhancements have been made to the interpreter to both
15928 reduce the code size and improve performance.
15930 Current core subsystem library code sizes are shown below. These
15931 are the code and data sizes for the acpica.lib produced by the
15932 Microsoft Visual C++ 6.0 compiler, and these values do not include
15933 any ACPI driver or OSPM code. The debug version of the code
15934 includes the full debug trace mechanism which contains over 700
15935 invocations of the DEBUG_PRINT macro, 500 function entry macro
15936 invocations, and over 900 function exit macro invocations --
15937 leading to a much larger code and data size. Note that these
15938 values will vary depending on the efficiency of the compiler and
15939 the compiler options used during generation.
15941 Non-Debug Version: 64K Code, 5K Data, 69K Total
15942 Debug Version: 137K Code, 58K Data, 195K Total
15946 Implemented wbinvd() macro, pending a kernel-wide definition.
15948 Fixed /proc/acpi/event to handle poll() and short reads.
15950 ASL Compiler, version X2026:
15952 Fixed a problem introduced in the previous label where the AML
15954 code emitted for package objects produced packages with zero
15957 ----------------------------------------
15958 Summary of changes for this label: 08_16_01
15960 ACPI CA Core Subsystem:
15962 The following ACPI 2.0 ASL operators have been implemented in the
15963 AML interpreter (These are already supported by the Intel ASL
15964 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
15965 ToBuffer. Support for 64-bit AML constants is implemented in the
15966 AML parser, debugger, and disassembler.
15968 The internal memory tracking mechanism (leak detection code) has
15969 been upgraded to reduce the memory overhead (a separate tracking
15970 block is no longer allocated for each memory allocation), and now
15971 supports all of the internal object caches.
15973 The data structures and code for the internal object caches have
15974 been coelesced and optimized so that there is a single cache and
15975 memory list data structure and a single group of functions that
15976 implement generic cache management. This has reduced the code
15977 size in both the debug and release versions of the subsystem.
15979 The DEBUG_PRINT macro(s) have been optimized for size and replaced
15980 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
15981 different, because it generates a single call to an internal
15982 function. This results in a savings of about 90 bytes per
15983 invocation, resulting in an overall code and data savings of about
15984 16% in the debug version of the subsystem.
15988 Fixed C3 disk corruption problems and re-enabled C3 on supporting
15991 Integrated low-level sleep code by Patrick Mochel.
15993 Further tweaked source code Linuxization.
15999 Support for ACPI 2.0 variable length packages is fixed/completed.
16001 Fixed a problem where the optional length parameter for the ACPI
16002 2.0 ToString operator.
16004 Fixed multiple extraneous error messages when a syntax error is
16005 detected within the declaration line of a control method.
16007 ----------------------------------------
16008 Summary of changes for this label: 07_17_01
16010 ACPI CA Core Subsystem:
16012 Added a new interface named AcpiGetFirmwareTable to obtain any
16013 ACPI table via the ACPI signature. The interface can be called at
16014 any time during kernel initialization, even before the kernel
16015 virtual memory manager is initialized and paging is enabled. This
16016 allows kernel subsystems to obtain ACPI tables very early, even
16017 before the ACPI CA subsystem is initialized.
16019 Fixed a problem where Fields defined with the AnyAcc attribute
16020 could be resolved to the incorrect address under the following
16021 conditions: 1) the field width is larger than 8 bits and 2) the
16022 parent operation region is not defined on a DWORD boundary.
16024 Fixed a problem where the interpreter is not being locked during
16025 namespace initialization (during execution of the _INI control
16026 methods), causing an error when an attempt is made to release it
16029 ACPI 2.0 support in the AML Interpreter has begun and will be
16030 ongoing throughout the rest of this year. In this label, The Mod
16031 operator is implemented.
16033 Added a new data type to contain full PCI addresses named
16034 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16035 and Function values.
16039 Enhanced the Linux version of the source code to change most
16040 capitalized ACPI type names to lowercase. For example, all
16041 instances of ACPI_STATUS are changed to acpi_status. This will
16042 result in a large diff, but the change is strictly cosmetic and
16043 aligns the CA code closer to the Linux coding standard.
16047 The interfaces to the PCI configuration space have been changed to
16048 add the PCI Segment number and to split the single 32-bit combined
16049 DeviceFunction field into two 16-bit fields. This was
16050 accomplished by moving the four values that define an address in
16051 PCI configuration space (segment, bus, device, and function) to
16052 the new ACPI_PCI_ID structure.
16054 The changes to the PCI configuration space interfaces led to a
16055 reexamination of the complete set of address space access
16056 interfaces for PCI, I/O, and Memory. The previously existing 18
16057 interfaces have proven difficult to maintain (any small change
16058 must be propagated across at least 6 interfaces) and do not easily
16059 allow for future expansion to 64 bits if necessary. Also, on some
16060 systems, it would not be appropriate to demultiplex the access
16061 width (8, 16, 32,or 64) before calling the OSL if the
16062 corresponding native OS interfaces contain a similar access width
16063 parameter. For these reasons, the 18 address space interfaces
16064 have been replaced by these 6 new ones:
16066 AcpiOsReadPciConfiguration
16067 AcpiOsWritePciConfiguration
16073 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16074 to perform the platform and/or OS-specific actions necessary to
16075 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16076 interface will simply call down to the CA core to perform the low-
16077 memory search for the table. On IA-64, the RSDP is obtained from
16078 EFI. Migrating this interface to the OSL allows the CA core to
16080 remain OS and platform independent.
16082 Added a new interface named AcpiOsSignal to provide a generic
16083 "function code and pointer" interface for various miscellaneous
16084 signals and notifications that must be made to the host OS. The
16085 first such signals are intended to support the ASL Fatal and
16086 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16087 interface has been obsoleted.
16089 The definition of the AcpiFormatException interface has been
16090 changed to simplify its use. The caller no longer must supply a
16091 buffer to the call; A pointer to a const string is now returned
16092 directly. This allows the call to be easily used in printf
16093 statements, etc. since the caller does not have to manage a local
16097 ASL Compiler, Version X2025:
16099 The ACPI 2.0 Switch/Case/Default operators have been implemented
16100 and are fully functional. They will work with all ACPI 1.0
16101 interpreters, since the operators are simply translated to If/Else
16104 The ACPI 2.0 ElseIf operator is implemented and will also work
16105 with 1.0 interpreters, for the same reason.
16107 Implemented support for ACPI 2.0 variable-length packages. These
16108 packages have a separate opcode, and their size is determined by
16109 the interpreter at run-time.
16111 Documentation The ACPI CA Programmer Reference has been updated to
16112 reflect the new interfaces and changes to existing interfaces.
16114 ------------------------------------------
16115 Summary of changes for this label: 06_15_01
16117 ACPI CA Core Subsystem:
16119 Fixed a problem where a DWORD-accessed field within a Buffer
16120 object would get its byte address inadvertently rounded down to
16121 the nearest DWORD. Buffers are always Byte-accessible.
16123 ASL Compiler, version X2024:
16125 Fixed a problem where the Switch() operator would either fault or
16126 hang the compiler. Note however, that the AML code for this ACPI
16127 2.0 operator is not yet implemented.
16129 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16132 Implementation of the CreateField operator automatically converts
16133 a reference to a named field within a resource descriptor from a
16134 byte offset to a bit offset if required.
16136 Added some missing named fields from the resource descriptor
16137 support. These are the names that are automatically created by the
16138 compiler to reference fields within a descriptor. They are only
16139 valid at compile time and are not passed through to the AML
16142 Resource descriptor named fields are now typed as Integers and
16143 subject to compile-time typechecking when used in expressions.
16145 ------------------------------------------
16146 Summary of changes for this label: 05_18_01
16148 ACPI CA Core Subsystem:
16150 Fixed a couple of problems in the Field support code where bits
16151 from adjacent fields could be returned along with the proper field
16152 bits. Restructured the field support code to improve performance,
16153 readability and maintainability.
16155 New DEBUG_PRINTP macro automatically inserts the procedure name
16156 into the output, saving hundreds of copies of procedure name
16157 strings within the source, shrinking the memory footprint of the
16158 debug version of the core subsystem.
16160 Source Code Structure:
16162 The source code directory tree was restructured to reflect the
16163 current organization of the component architecture. Some files
16164 and directories have been moved and/or renamed.
16168 Fixed leaking kacpidpc processes.
16170 Fixed queueing event data even when /proc/acpi/event is not
16173 ASL Compiler, version X2020:
16175 Memory allocation performance enhancement - over 24X compile time
16176 improvement on large ASL files. Parse nodes and namestring
16177 buffers are now allocated from a large internal compiler buffer.
16179 The temporary .SRC file is deleted unless the "-s" option is
16182 The "-d" debug output option now sends all output to the .DBG file
16183 instead of the console.
16185 "External" second parameter is now optional
16187 "ElseIf" syntax now properly allows the predicate
16189 Last operand to "Load" now recognized as a Target operand
16191 Debug object can now be used anywhere as a normal object.
16193 ResourceTemplate now returns an object of type BUFFER
16195 EISAID now returns an object of type INTEGER
16197 "Index" now works with a STRING operand
16199 "LoadTable" now accepts optional parameters
16201 "ToString" length parameter is now optional
16203 "Interrupt (ResourceType," parse error fixed.
16205 "Register" with a user-defined region space parse error fixed
16207 Escaped backslash at the end of a string ("\\") scan/parse error
16210 "Revision" is now an object of type INTEGER.
16214 ------------------------------------------
16215 Summary of changes for this label: 05_02_01
16219 /proc/acpi/event now blocks properly.
16221 Removed /proc/sys/acpi. You can still dump your DSDT from
16224 ACPI CA Core Subsystem:
16226 Fixed a problem introduced in the previous label where some of the
16227 "small" resource descriptor types were not recognized.
16229 Improved error messages for the case where an ASL Field is outside
16230 the range of the parent operation region.
16232 ASL Compiler, version X2018:
16235 Added error detection for ASL Fields that extend beyond the length
16236 of the parent operation region (only if the length of the region
16237 is known at compile time.) This includes fields that have a
16238 minimum access width that is smaller than the parent region, and
16239 individual field units that are partially or entirely beyond the
16240 extent of the parent.
16244 ------------------------------------------
16245 Summary of changes for this label: 04_27_01
16247 ACPI CA Core Subsystem:
16249 Fixed a problem where the namespace mutex could be released at the
16250 wrong time during execution of AcpiRemoveAddressSpaceHandler.
16252 Added optional thread ID output for debug traces, to simplify
16253 debugging of multiple threads. Added context switch notification
16254 when the debug code realizes that a different thread is now
16255 executing ACPI code.
16257 Some additional external data types have been prefixed with the
16258 string "ACPI_" for consistency. This may effect existing code.
16259 The data types affected are the external callback typedefs - e.g.,
16261 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
16265 Fixed an issue with the OSL semaphore implementation where a
16266 thread was waking up with an error from receiving a SIGCHLD
16269 Linux version of ACPI CA now uses the system C library for string
16270 manipulation routines instead of a local implementation.
16272 Cleaned up comments and removed TBDs.
16274 ASL Compiler, version X2017:
16276 Enhanced error detection and reporting for all file I/O
16281 Programmer Reference updated to version 1.06.
16285 ------------------------------------------
16286 Summary of changes for this label: 04_13_01
16288 ACPI CA Core Subsystem:
16290 Restructured support for BufferFields and RegionFields.
16291 BankFields support is now fully operational. All known 32-bit
16292 limitations on field sizes have been removed. Both BufferFields
16293 and (Operation) RegionFields are now supported by the same field
16296 Resource support now supports QWORD address and IO resources. The
16297 16/32/64 bit address structures and the Extended IRQ structure
16298 have been changed to properly handle Source Resource strings.
16300 A ThreadId of -1 is now used to indicate a "mutex not acquired"
16301 condition internally and must never be returned by AcpiOsThreadId.
16302 This reserved value was changed from 0 since Unix systems allow a
16307 Driver code reorganized to enhance portability
16309 Added a kernel configuration option to control ACPI_DEBUG
16311 Fixed the EC driver to honor _GLK.
16313 ASL Compiler, version X2016:
16315 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
16316 address space was set to 0, not 0x7f as it should be.
16318 ------------------------------------------
16319 Summary of changes for this label: 03_13_01
16321 ACPI CA Core Subsystem:
16323 During ACPI initialization, the _SB_._INI method is now run if
16326 Notify handler fix - notifies are deferred until the parent method
16327 completes execution. This fixes the "mutex already acquired"
16328 issue seen occasionally.
16330 Part of the "implicit conversion" rules in ACPI 2.0 have been
16331 found to cause compatibility problems with existing ASL/AML. The
16332 convert "result-to-target-type" implementation has been removed
16333 for stores to method Args and Locals. Source operand conversion
16334 is still fully implemented. Possible changes to ACPI 2.0
16335 specification pending.
16337 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
16340 Fix for compiler warnings for 64-bit compiles.
16344 /proc output aligned for easier parsing.
16346 Release-version compile problem fixed.
16348 New kernel configuration options documented in Configure.help.
16350 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
16355 Power resource driver integrated with bus manager.
16357 Fixed kernel fault during active cooling for thermal zones.
16361 The source code tree has been restructured.
16365 ------------------------------------------
16366 Summary of changes for this label: 03_02_01
16368 Linux OS Services Layer (OSL):
16370 Major revision of all Linux-specific code.
16372 Modularized all ACPI-specific drivers.
16374 Added new thermal zone and power resource drivers.
16376 Revamped /proc interface (new functionality is under /proc/acpi).
16378 New kernel configuration options.
16380 Linux known issues:
16382 New kernel configuration options not documented in Configure.help
16386 Module dependencies not currently implemented. If used, they
16387 should be loaded in this order: busmgr, power, ec, system,
16388 processor, battery, ac_adapter, button, thermal.
16390 Modules will not load if CONFIG_MODVERSION is set.
16392 IBM 600E - entering S5 may reboot instead of shutting down.
16394 IBM 600E - Sleep button may generate "Invalid <NULL> context"
16397 Some systems may fail with "execution mutex already acquired"
16400 ACPI CA Core Subsystem:
16402 Added a new OSL Interface, AcpiOsGetThreadId. This was required
16403 for the deadlock detection code. Defined to return a non-zero, 32-
16404 bit thread ID for the currently executing thread. May be a non-
16405 zero constant integer on single-thread systems.
16407 Implemented deadlock detection for internal subsystem mutexes. We
16408 may add conditional compilation for this code (debug only) later.
16410 ASL/AML Mutex object semantics are now fully supported. This
16411 includes multiple acquires/releases by owner and support for the
16413 Mutex SyncLevel parameter.
16415 A new "Force Release" mechanism automatically frees all ASL
16416 Mutexes that have been acquired but not released when a thread
16417 exits the interpreter. This forces conformance to the ACPI spec
16418 ("All mutexes must be released when an invocation exits") and
16419 prevents deadlocked ASL threads. This mechanism can be expanded
16420 (later) to monitor other resource acquisitions if OEM ASL code
16421 continues to misbehave (which it will).
16423 Several new ACPI exception codes have been added for the Mutex
16426 Recursive method calls are now allowed and supported (the ACPI
16427 spec does in fact allow recursive method calls.) The number of
16428 recursive calls is subject to the restrictions imposed by the
16429 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
16432 Implemented support for the SyncLevel parameter for control
16433 methods (ACPI 2.0 feature)
16435 Fixed a deadlock problem when multiple threads attempted to use
16438 Fixed a problem where the string length of a String package
16439 element was not always set in a package returned from
16440 AcpiEvaluateObject.
16442 Fixed a problem where the length of a String package element was
16443 not always included in the length of the overall package returned
16444 from AcpiEvaluateObject.
16446 Added external interfaces (Acpi*) to the ACPI debug memory
16447 manager. This manager keeps a list of all outstanding
16448 allocations, and can therefore detect memory leaks and attempts to
16449 free memory blocks more than once. Useful for code such as the
16450 power manager, etc. May not be appropriate for device drivers.
16451 Performance with the debug code enabled is slow.
16453 The ACPI Global Lock is now an optional hardware element.
16455 ASL Compiler Version X2015:
16457 Integrated changes to allow the compiler to be generated on
16458 multiple platforms.
16460 Linux makefile added to generate the compiler on Linux
16464 All platform-specific headers have been moved to their own
16465 subdirectory, Include/Platform.
16467 New source file added, Interpreter/ammutex.c
16469 New header file, Include/acstruct.h
16473 The programmer reference has been updated for the following new
16474 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
16476 ------------------------------------------
16477 Summary of changes for this label: 02_08_01
16479 Core ACPI CA Subsystem: Fixed a problem where an error was
16480 incorrectly returned if the return resource buffer was larger than
16481 the actual data (in the resource interfaces).
16483 References to named objects within packages are resolved to the
16485 full pathname string before packages are returned directly (via
16486 the AcpiEvaluateObject interface) or indirectly via the resource
16489 Linux OS Services Layer (OSL):
16491 Improved /proc battery interface.
16494 Added C-state debugging output and other miscellaneous fixes.
16496 ASL Compiler Version X2014:
16498 All defined method arguments can now be used as local variables,
16499 including the ones that are not actually passed in as parameters.
16500 The compiler tracks initialization of the arguments and issues an
16501 exception if they are used without prior assignment (just like
16504 The -o option now specifies a filename prefix that is used for all
16505 output files, including the AML output file. Otherwise, the
16506 default behavior is as follows: 1) the AML goes to the file
16507 specified in the DSDT. 2) all other output files use the input
16508 source filename as the base.
16510 ------------------------------------------
16511 Summary of changes for this label: 01_25_01
16513 Core ACPI CA Subsystem: Restructured the implementation of object
16514 store support within the interpreter. This includes support for
16515 the Store operator as well as any ASL operators that include a
16518 Partially implemented support for Implicit Result-to-Target
16519 conversion. This is when a result object is converted on the fly
16520 to the type of an existing target object. Completion of this
16521 support is pending further analysis of the ACPI specification
16522 concerning this matter.
16524 CPU-specific code has been removed from the subsystem (hardware
16527 New Power Management Timer functions added
16529 Linux OS Services Layer (OSL): Moved system state transition code
16530 to the core, fixed it, and modified Linux OSL accordingly.
16532 Fixed C2 and C3 latency calculations.
16535 We no longer use the compilation date for the version message on
16536 initialization, but retrieve the version from AcpiGetSystemInfo().
16538 Incorporated for fix Sony VAIO machines.
16540 Documentation: The Programmer Reference has been updated and
16544 ASL Compiler: Version X2013: Fixed a problem where the line
16545 numbering and error reporting could get out of sync in the
16546 presence of multiple include files.
16548 ------------------------------------------
16549 Summary of changes for this label: 01_15_01
16551 Core ACPI CA Subsystem:
16553 Implemented support for type conversions in the execution of the
16554 ASL Concatenate operator (The second operand is converted to
16555 match the type of the first operand before concatenation.)
16557 Support for implicit source operand conversion is partially
16558 implemented. The ASL source operand types Integer, Buffer, and
16559 String are freely interchangeable for most ASL operators and are
16560 converted by the interpreter on the fly as required. Implicit
16561 Target operand conversion (where the result is converted to the
16562 target type before storing) is not yet implemented.
16564 Support for 32-bit and 64-bit BCD integers is implemented.
16566 Problem fixed where a field read on an aligned field could cause a
16567 read past the end of the field.
16569 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
16570 does not return a value, but the caller expects one. (The ASL
16571 compiler flags this as a warning.)
16576 1. Static typechecking of all operands is implemented. This
16577 prevents the use of invalid objects (such as using a Package where
16578 an Integer is required) at compile time instead of at interpreter
16580 2. The ASL source line is printed with ALL errors and warnings.
16581 3. Bug fix for source EOF without final linefeed.
16582 4. Debug option is split into a parse trace and a namespace trace.
16583 5. Namespace output option (-n) includes initial values for
16584 integers and strings.
16585 6. Parse-only option added for quick syntax checking.
16586 7. Compiler checks for duplicate ACPI name declarations
16589 1. Relaxed typechecking to allow interchangeability between
16590 strings, integers, and buffers. These types are now converted by
16591 the interpreter at runtime.
16592 2. Compiler reports time taken by each internal subsystem in the
16596 ------------------------------------------
16597 Summary of changes for this label: 12_14_00
16601 This is the first official release of the compiler. Since the
16602 compiler requires elements of the Core Subsystem, this label
16603 synchronizes everything.
16605 ------------------------------------------
16606 Summary of changes for this label: 12_08_00
16609 Fixed a problem where named references within the ASL definition
16610 of both OperationRegions and CreateXXXFields did not work
16611 properly. The symptom was an AE_AML_OPERAND_TYPE during
16612 initialization of the region/field. This is similar (but not
16613 related internally) to the problem that was fixed in the last
16616 Implemented both 32-bit and 64-bit support for the BCD ASL
16617 functions ToBCD and FromBCD.
16619 Updated all legal headers to include "2000" in the copyright
16622 ------------------------------------------
16623 Summary of changes for this label: 12_01_00
16625 Fixed a problem where method invocations within the ASL definition
16626 of both OperationRegions and CreateXXXFields did not work
16627 properly. The symptom was an AE_AML_OPERAND_TYPE during
16628 initialization of the region/field:
16630 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
16631 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
16634 Fixed a problem where operators with more than one nested
16635 subexpression would fail. The symptoms were varied, by mostly
16636 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
16637 problem that has gone unnoticed until now.
16639 Subtract (Add (1,2), Multiply (3,4))
16641 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
16642 previous build (The prefix part of a relative path was handled
16645 Fixed a problem where Operation Region initialization failed if
16646 the operation region name was a "namepath" instead of a simple
16647 "nameseg". Symptom was an AE_NO_OPERAND error.
16649 Fixed a problem where an assignment to a local variable via the
16650 indirect RefOf mechanism only worked for the first such
16651 assignment. Subsequent assignments were ignored.
16653 ------------------------------------------
16654 Summary of changes for this label: 11_15_00
16656 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
16657 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
16658 the AML interpreter does NOT have support for the new 2.0 ASL
16659 grammar terms at this time.
16661 All ACPI hardware access is via the GAS structures in the ACPI 2.0
16664 All physical memory addresses across all platforms are now 64 bits
16665 wide. Logical address width remains dependent on the platform
16668 AcpiOsMapMemory interface changed to a 64-bit physical address.
16670 The AML interpreter integer size is now 64 bits, as per the ACPI
16673 For backwards compatibility with ACPI 1.0, ACPI tables with a
16674 revision number less than 2 use 32-bit integers only.
16676 Fixed a problem where the evaluation of OpRegion operands did not
16677 always resolve them to numbers properly.
16679 ------------------------------------------
16680 Summary of changes for this label: 10_20_00
16682 Fix for CBN_._STA issue. This fix will allow correct access to
16683 CBN_ OpRegions when the _STA returns 0x8.
16685 Support to convert ACPI constants (Ones, Zeros, One) to actual
16686 values before a package object is returned
16688 Fix for method call as predicate to if/while construct causing
16689 incorrect if/while behavior
16691 Fix for Else block package lengths sometimes calculated wrong (if
16694 Fix for Processor object length field, was always zero
16696 Table load abort if FACP sanity check fails
16698 Fix for problem with Scope(name) if name already exists
16700 Warning emitted if a named object referenced cannot be found
16701 (resolved) during method execution.
16707 ------------------------------------------
16708 Summary of changes for this label: 9_29_00
16710 New table initialization interfaces: AcpiInitializeSubsystem no
16711 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
16712 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
16713 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
16716 Note: These interface changes require changes to all existing OSDs
16718 The PCI_Config default address space handler is always installed
16719 at the root namespace object.
16721 -------------------------------------------
16722 Summary of changes for this label: 09_15_00
16724 The new initialization architecture is implemented. New
16725 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
16726 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
16728 (Namespace is automatically loaded when a table is loaded)
16730 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
16731 52 bytes to 32 bytes. There is usually one of these for every
16732 namespace object, so the memory savings is significant.
16734 Implemented just-in-time evaluation of the CreateField operators.
16736 Bug fixes for IA-64 support have been integrated.
16738 Additional code review comments have been implemented
16740 The so-called "third pass parse" has been replaced by a final walk
16741 through the namespace to initialize all operation regions (address
16742 spaces) and fields that have not yet been initialized during the
16743 execution of the various _INI and REG methods.
16745 New file - namespace/nsinit.c
16747 -------------------------------------------
16748 Summary of changes for this label: 09_01_00
16750 Namespace manager data structures have been reworked to change the
16751 primary object from a table to a single object. This has
16752 resulted in dynamic memory savings of 3X within the namespace and
16753 2X overall in the ACPI CA subsystem.
16755 Fixed problem where the call to AcpiEvFindPciRootBuses was
16756 inadvertently left commented out.
16758 Reduced the warning count when generating the source with the GCC
16761 Revision numbers added to each module header showing the
16762 SourceSafe version of the file. Please refer to this version
16763 number when giving us feedback or comments on individual modules.
16765 The main object types within the subsystem have been renamed to
16766 clarify their purpose:
16768 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
16769 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
16770 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
16772 NOTE: no changes to the initialization sequence are included in
16775 -------------------------------------------
16776 Summary of changes for this label: 08_23_00
16778 Fixed problem where TerminateControlMethod was being called
16779 multiple times per method
16781 Fixed debugger problem where single stepping caused a semaphore to
16784 Improved performance through additional parse object caching -
16785 added ACPI_EXTENDED_OP type
16787 -------------------------------------------
16788 Summary of changes for this label: 08_10_00
16790 Parser/Interpreter integration: Eliminated the creation of
16791 complete parse trees for ACPI tables and control methods.
16792 Instead, parse subtrees are created and then deleted as soon as
16793 they are processed (Either entered into the namespace or executed
16794 by the interpreter). This reduces the use of dynamic kernel
16795 memory significantly. (about 10X)
16797 Exception codes broken into classes and renumbered. Be sure to
16798 recompile all code that includes acexcep.h. Hopefully we won't
16799 have to renumber the codes again now that they are split into
16800 classes (environment, programmer, AML code, ACPI table, and
16803 Fixed some additional alignment issues in the Resource Manager
16806 Implemented semaphore tracking in the AcpiExec utility, and fixed
16807 several places where mutexes/semaphores were being unlocked
16808 without a corresponding lock operation. There are no known
16809 semaphore or mutex "leaks" at this time.
16811 Fixed the case where an ASL Return operator is used to return an
16814 -------------------------------------------
16815 Summary of changes for this label: 07_28_00
16817 Fixed a problem with the way addresses were calculated in
16818 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
16819 manifested itself when a Field was created with WordAccess or
16820 DwordAccess, but the field unit defined within the Field was less
16822 than a Word or Dword.
16824 Fixed a problem in AmlDumpOperands() module's loop to pull
16825 operands off of the operand stack to display information. The
16826 problem manifested itself as a TLB error on 64-bit systems when
16827 accessing an operand stack with two or more operands.
16829 Fixed a problem with the PCI configuration space handlers where
16830 context was getting confused between accesses. This required a
16831 change to the generic address space handler and address space
16832 setup definitions. Handlers now get both a global handler context
16833 (this is the one passed in by the user when executing
16834 AcpiInstallAddressSpaceHandler() and a specific region context
16835 that is unique to each region (For example, the _ADR, _SEG and
16836 _BBN values associated with a specific region). The generic
16837 function definitions have changed to the following:
16839 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
16840 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
16841 *HandlerContext, // This used to be void *Context void
16842 *RegionContext); // This is an additional parameter
16844 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
16845 RegionHandle, UINT32 Function, void *HandlerContext, void
16846 **RegionContext); // This used to be **ReturnContext
16848 -------------------------------------------
16849 Summary of changes for this label: 07_21_00
16851 Major file consolidation and rename. All files within the
16852 interpreter have been renamed as well as most header files. This
16853 was done to prevent collisions with existing files in the host
16854 OSs -- filenames such as "config.h" and "global.h" seem to be
16855 quite common. The VC project files have been updated. All
16856 makefiles will require modification.
16858 The parser/interpreter integration continues in Phase 5 with the
16859 implementation of a complete 2-pass parse (the AML is parsed
16860 twice) for each table; This avoids the construction of a huge
16861 parse tree and therefore reduces the amount of dynamic memory
16862 required by the subsystem. Greater use of the parse object cache
16863 means that performance is unaffected.
16865 Many comments from the two code reviews have been rolled in.
16867 The 64-bit alignment support is complete.
16869 -------------------------------------------
16870 Summary of changes for this label: 06_30_00
16872 With a nod and a tip of the hat to the technology of yesteryear,
16873 we've added support in the source code for 80 column output
16874 devices. The code is now mostly constrained to 80 columns or
16875 less to support environments and editors that 1) cannot display
16876 or print more than 80 characters on a single line, and 2) cannot
16877 disable line wrapping.
16879 A major restructuring of the namespace data structure has been
16880 completed. The result is 1) cleaner and more
16881 understandable/maintainable code, and 2) a significant reduction
16882 in the dynamic memory requirement for each named ACPI object
16885 -------------------------------------------
16886 Summary of changes for this label: 06_23_00
16888 Linux support has been added. In order to obtain approval to get
16889 the ACPI CA subsystem into the Linux kernel, we've had to make
16890 quite a few changes to the base subsystem that will affect all
16891 users (all the changes are generic and OS- independent). The
16892 effects of these global changes have been somewhat far reaching.
16893 Files have been merged and/or renamed and interfaces have been
16894 renamed. The major changes are described below.
16896 Osd* interfaces renamed to AcpiOs* to eliminate namespace
16897 pollution/confusion within our target kernels. All OSD
16898 interfaces must be modified to match the new naming convention.
16900 Files merged across the subsystem. A number of the smaller source
16901 and header files have been merged to reduce the file count and
16902 increase the density of the existing files. There are too many
16903 to list here. In general, makefiles that call out individual
16904 files will require rebuilding.
16906 Interpreter files renamed. All interpreter files now have the
16907 prefix am* instead of ie* and is*.
16909 Header files renamed: The acapi.h file is now acpixf.h. The
16910 acpiosd.h file is now acpiosxf.h. We are removing references to
16911 the acronym "API" since it is somewhat windowsy. The new name is
16912 "external interface" or xface or xf in the filenames.j
16915 All manifest constants have been forced to upper case (some were
16916 mixed case.) Also, the string "ACPI_" has been prepended to many
16917 (not all) of the constants, typedefs, and structs.
16919 The globals "DebugLevel" and "DebugLayer" have been renamed
16920 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
16922 All other globals within the subsystem are now prefixed with
16923 "AcpiGbl_" Internal procedures within the subsystem are now
16924 prefixed with "Acpi" (with only a few exceptions). The original
16925 two-letter abbreviation for the subcomponent remains after "Acpi"
16926 - for example, CmCallocate became AcpiCmCallocate.
16928 Added a source code translation/conversion utility. Used to
16929 generate the Linux source code, it can be modified to generate
16930 other types of source as well. Can also be used to cleanup
16931 existing source by removing extraneous spaces and blank lines.
16932 Found in tools/acpisrc/*
16934 OsdUnMapMemory was renamed to OsdUnmapMemory and then
16935 AcpiOsUnmapMemory. (UnMap became Unmap).
16937 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
16938 When set to one, this indicates that the caller wants to use the
16940 semaphore as a mutex, not a counting semaphore. ACPI CA uses
16941 both types. However, implementers of this call may want to use
16942 different OS primitives depending on the type of semaphore
16943 requested. For example, some operating systems provide separate
16945 "mutex" and "semaphore" interfaces - where the mutex interface is
16946 much faster because it doesn't have all the overhead of a full
16947 semaphore implementation.
16949 Fixed a deadlock problem where a method that accesses the PCI
16950 address space can block forever if it is the first access to the
16953 -------------------------------------------
16954 Summary of changes for this label: 06_02_00
16956 Support for environments that cannot handle unaligned data
16957 accesses (e.g. firmware and OS environments devoid of alignment
16958 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
16959 been added (via configurable macros) in these three areas: -
16960 Transfer of data from the raw AML byte stream is done via byte
16961 moves instead of word/dword/qword moves. - External objects are
16962 aligned within the user buffer, including package elements (sub-
16963 objects). - Conversion of name strings to UINT32 Acpi Names is now
16966 The Store operator was modified to mimic Microsoft's
16967 implementation when storing to a Buffer Field.
16969 Added a check of the BM_STS bit before entering C3.
16971 The methods subdirectory has been obsoleted and removed. A new
16972 file, cmeval.c subsumes the functionality.
16974 A 16-bit (DOS) version of AcpiExec has been developed. The
16975 makefile is under the acpiexec directory.