1 ----------------------------------------
2 17 November 2016. Summary of changes for version 20161117:
5 1) ACPICA kernel-resident subsystem:
7 Table Manager: Fixed a regression introduced in 20160729, "FADT support
8 cleanup". This was an attempt to remove all references in the source to
9 the FADT version 2, which never was a legal version number. It was
10 skipped because it was an early version of 64-bit support that was
11 eventually abandoned for the current 64-bit support.
13 Interpreter: Fixed a problem where runtime implicit conversion was
14 incorrectly disabled for the ASL operators below. This brings the
15 behavior into compliance with the ACPI specification:
23 Table Manager: Added a new public interface, AcpiPutTable, used to
24 release and free an ACPI table returned by AcpiGetTable and related
27 Example Code and Data Size: These are the sizes for the OS-independent
28 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
29 debug version of the code includes the debug output trace mechanism and
30 has a much larger code and data size.
33 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
34 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
36 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
37 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
40 2) iASL Compiler/Disassembler and Tools:
42 Disassembler: Fixed a regression for disassembly of Resource Template.
43 Detection of templates in the AML stream missed some types of templates.
45 iASL: Fixed a problem where an Access Size error was returned for the PCC
46 address space when the AccessSize of the GAS register is greater than a
49 iASL: Implemented several grammar changes for the operators below. These
50 changes are slated for the next version of the ACPI specification:
51 RefOf - Disallow method invocation as an operand
52 CondRefOf - Disallow method invocation as an operand
53 DerefOf - Disallow operands that use the result from operators
55 do not return a reference (Changed TermArg to
58 iASL: Control method invocations are now allowed for Target operands, as
59 per the ACPI specification. Removed error for using a control method
60 invocation as a Target operand.
62 Disassembler: Improved detection of Resource Templates, Unicode, and
63 Strings within Buffer objects. These subtypes do not contain a specific
64 opcode to indicate the originating ASL code, and they must be detected by
65 other means within the disassembler.
67 iASL: Implemented an optimization improvement for 32-bit ACPI tables
68 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
69 only after 64-bit to 32-bit truncation. A truncation warning message is
70 still emitted, however.
72 AcpiXtract: Implemented handling for both types of line terminators (LF
73 or CR/LF) so that it can accept AcpiDump output files from any system.
76 AcpiBin: Added two new options for comparing AML files:
77 -a: compare and display ALL mismatches
78 -o: start compare at this offset into the second file
80 ----------------------------------------
81 30 September 2016. Summary of changes for version 20160930:
84 1) ACPICA kernel-resident subsystem:
86 Fixed a regression in the internal AcpiTbFindTable function where a non
87 AE_OK exception could inadvertently be returned even if the function did
88 not fail. This problem affects the following operators:
92 Fixed a regression in the LoadTable operator where a load to any
93 namespace location other than the root no longer worked properly.
95 Increased the maximum loop count value that will result in the
96 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
97 prevent infinite loops within the AML interpreter and thus the host OS
98 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
101 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
102 acpixf.h file. This allows hosts to easily configure the maximum loop
105 Removed an illegal character in the strtoul64.c file. This character
106 caused errors with some C compilers.
108 Example Code and Data Size: These are the sizes for the OS-independent
109 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
110 debug version of the code includes the debug output trace mechanism and
111 has a much larger code and data size.
114 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
115 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
117 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
118 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
121 2) iASL Compiler/Disassembler and Tools:
123 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
124 the simpler ASL ElseIf keyword. During the conversion, a trailing If
125 block could be lost and missing from the disassembled output.
127 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
128 the missing rule caused a parse error when using the Index operator as an
129 operand to ObjectType. This construct now compiles properly. Example:
132 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
133 option). Previously, unresolved symbols could cause a protection fault.
134 Such symbols are now marked as unresolved in the map file.
136 iASL: Implemented support to allow control method invocations as an
137 operand to the ASL DeRefOf operator. Example:
138 DeRefOf(MTH1(Local0))
140 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
141 possible _PLD buffer now includes examination of both the normal buffer
142 length (16 or 20) as well as the surrounding AML package length.
144 Disassembler: Fixed a problem with the decoding of complex expressions
145 within the Divide operator for ASL+. For the case where both the quotient
146 and remainder targets are specified, the entire statement cannot be
147 disassembled. Previously, the output incorrectly contained a mix of ASL-
148 and ASL+ operators. This mixed statement causes a syntax error when
150 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
152 Divide (INT1 + 6, 128, RSLT, QUOT)
154 iASL/Tools: Added support to process AML and non-AML ACPI tables
155 consistently. For the disassembler and AcpiExec, allow all types of ACPI
156 tables (AML and data tables). For the iASL -e option, allow only AML
159 ----------------------------------------
160 31 August 2016. Summary of changes for version 20160831:
163 1) ACPICA kernel-resident subsystem:
165 Improve support for the so-called "module-level code", which is defined
166 to be math, logical and control AML opcodes that appear outside of any
167 control method. This change improves the support by adding more opcodes
168 that can be executed in the manner. Some other issues have been solved,
169 and the ASL grammar changes to support such code under all scope
170 operators (Device, etc.) are complete. Lv Zheng.
172 UEFI support: these OSL functions have been implemented. This is an
173 additional step toward supporting the AcpiExec utility natively (with
174 full hardware access) under UEFI. Marcelo Ferreira.
175 AcpiOsReadPciConfiguration
176 AcpiOsWritePciConfiguration
178 Fixed a possible mutex error during control method auto-serialization. Lv
181 Updated support for the Generic Address Structure by fully implementing
182 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
185 Updated the return value for the internal _OSI method. Instead of
186 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
187 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
188 implementations, and will be reflected and clarified in the next version
189 of the ACPI specification.
191 Implemented two new table events that can be passed to an ACPICA table
192 handler. These events are used to indicate a table installation or
193 uninstallation. These events are used in addition to existed table load
194 and unload events. Lv Zheng.
196 Implemented a cleanup for all internal string-to-integer conversions.
197 Consolidate multiple versions of this functionality and limit possible
198 bases to either 10 or 16 to simplify the code. Adds a new file,
201 Cleanup the inclusion order of the various compiler-specific headers.
202 This simplifies build configuration management. The compiler-specific
203 headers are now split out from the host-specific headers. Lv Zheng.
205 Example Code and Data Size: These are the sizes for the OS-independent
206 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
207 debug version of the code includes the debug output trace mechanism and
208 has a much larger code and data size.
211 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
212 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
215 2) iASL Compiler/Disassembler and Tools:
217 iASL/AcpiExec: Added a command line option to display the build date/time
218 of the tool (-vd). This can be useful to verify that the correct version
219 of the tools are being used.
221 AML Debugger: Implemented a new subcommand ("execute predef") to execute
222 all predefined control methods and names within the current namespace.
223 This can be useful for debugging problems with ACPI tables and the ACPI
226 ----------------------------------------
227 29 July 2016. Summary of changes for version 20160729:
230 1) ACPICA kernel-resident subsystem:
232 Implemented basic UEFI support for the various ACPICA tools. This
234 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
235 2) Support to obtain the ACPI tables on UEFI.
236 3) Local implementation of required C library functions not available on
238 4) A front-end (main) function for the tools for UEFI-related
241 The initial deployment of this support is the AcpiDump utility executing
242 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
243 Current environments supported are Linux/Unix. MSVC generation is not
244 supported at this time. See the generate/efi/README file for build
245 instructions. Lv Zheng.
247 Future plans include porting the AcpiExec utility to execute natively on
248 the platform with I/O and memory access. This will allow viewing/dump of
249 the platform namespace and native execution of ACPI control methods that
250 access the actual hardware. To fully implement this support, the OSL
251 functions below must be implemented with UEFI interfaces. Any community
252 help in the implementation of these functions would be appreciated:
257 AcpiOsReadPciConfiguration
258 AcpiOsWritePciConfiguration
260 Restructured and standardized the C library configuration for ACPICA,
261 resulting in the various configuration options below. This includes a
262 global restructuring of the compiler-dependent and platform-dependent
263 include files. These changes may affect the existing platform-dependent
264 configuration files on some hosts. Lv Zheng.
266 The current C library configuration options appear below. For any issues,
267 it may be helpful to examine the existing compiler-dependent and
268 platform-dependent files as examples. Lv Zheng.
271 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
273 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
274 2) Unix/Windows/BSD applications:
275 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
277 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
278 3) UEFI applications:
279 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
281 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
282 4) UEFI applications (EDK2/StdLib):
283 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
284 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
287 AML interpreter: "module-level code" support. Allows for execution of so-
288 called "executable" AML code (math/logical operations, etc.) outside of
289 control methods not just at the module level (top level) but also within
290 any scope declared outside of a control method - Scope{}, Device{},
291 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
293 Simplified the configuration of the "maximum AML loops" global option by
294 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
298 Example Code and Data Size: These are the sizes for the OS-independent
299 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
300 debug version of the code includes the debug output trace mechanism and
301 has a much larger code and data size.
304 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
305 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
308 2) iASL Compiler/Disassembler and Tools:
310 iASL: Add full support for the RASF ACPI table (RAS Features Table).
311 Includes disassembler, data table compiler, and header support.
313 iASL Expand "module-level code" support. Allows for
314 compilation/disassembly of so-called "executable" AML code (math/logical
315 operations, etc.) outside of control methods not just at the module level
316 (top level) but also within any scope declared outside of a control
317 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
320 AcpiDump: Added support for dumping all SSDTs on newer versions of
321 Windows. These tables are now easily available -- SSDTs are not available
322 through the registry on older versions.
324 ----------------------------------------
325 27 May 2016. Summary of changes for version 20160527:
328 1) ACPICA kernel-resident subsystem:
330 Temporarily reverted the new arbitrary bit length/alignment support in
331 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
332 a number of regressions with the new code that need to be fully resolved
333 and tested before this support can be finally integrated into ACPICA.
334 Apologies for any inconveniences these issues may have caused.
336 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
337 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
338 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
340 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
341 option. Adds a new return macro, return_STR. Junk-uk Kim.
343 Example Code and Data Size: These are the sizes for the OS-independent
344 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
345 debug version of the code includes the debug output trace mechanism and
346 has a much larger code and data size.
349 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
350 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
352 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
353 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
355 ----------------------------------------
356 22 April 2016. Summary of changes for version 20160422:
358 1) ACPICA kernel-resident subsystem:
360 Fixed a regression in the GAS (generic address structure) arbitrary bit
361 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
362 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
364 ACPI 6.0: Added support for new/renamed resource macros. One new argument
365 was added to each of these macros, and the original name has been
366 deprecated. The AML disassembler will always disassemble to the new
367 names. Support for the new macros was added to iASL, disassembler,
368 resource manager, and the acpihelp utility. ACPICA BZ 1274.
370 I2cSerialBus -> I2cSerialBusV2
371 SpiSerialBus -> SpiSerialBusV2
372 UartSerialBus -> UartSerialBusV2
374 ACPI 6.0: Added support for a new integer field that was appended to the
375 package object returned by the _BIX method. This adds iASL compile-time
376 and AML runtime error checking. ACPICA BZ 1273.
378 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
379 Subspace Type2" (Headers, Disassembler, and data table compiler).
381 Example Code and Data Size: These are the sizes for the OS-independent
382 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
383 debug version of the code includes the debug output trace mechanism and
384 has a much larger code and data size.
387 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
388 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
390 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
391 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
394 2) iASL Compiler/Disassembler and Tools:
396 iASL: Implemented an ASL grammar extension to allow/enable executable
397 "module-level code" to be created and executed under the various
398 operators that create new scopes. This type of AML code is already
399 supported in all known AML interpreters, and the grammar change will
400 appear in the next version of the ACPI specification. Simplifies the
401 conditional runtime creation of named objects under these object types:
409 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
410 ease-of-use to the ASL language. The syntax is similar to the
411 corresponding C operator, and is implemented with the existing AML While
412 opcode -- thus requiring no changes to existing AML interpreters.
414 For (Initialize, Predicate, Update) {TermList}
419 Initializer // Nothing | TermArg => ComputationalData
420 Predicate // Nothing | TermArg => ComputationalData
421 Update // Nothing | TermArg => ComputationalData
425 iASL: The _HID/_ADR detection and validation has been enhanced to search
426 under conditionals in order to allow these objects to be conditionally
429 iASL: Fixed several issues with the constant folding feature. The
430 improvement allows better detection and resolution of statements that can
431 be folded at compile time. ACPICA BZ 1266.
433 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
434 conversion to the ASL ElseIf operator where incorrect ASL code could be
437 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
438 sometimes an extra (and extraneous) set of parentheses were emitted for
439 some combinations of operators. Although this did not cause any problems
440 with recompilation of the disassembled code, it made the code more
441 difficult to read. David Box. ACPICA BZ 1231.
443 iASL: Changed to ignore the unreferenced detection for predefined names
444 of resource descriptor elements, when the resource descriptor is
445 created/defined within a control method.
447 iASL: Disassembler: Fix a possible fault with externally declared Buffer
450 ----------------------------------------
451 18 March 2016. Summary of changes for version 20160318:
453 1) ACPICA kernel-resident subsystem:
455 Added support for arbitrary bit lengths and bit offsets for registers
456 defined by the Generic Address Structure. Previously, only aligned bit
457 lengths of 8/16/32/64 were supported. This was sufficient for many years,
458 but recently some machines have been seen that require arbitrary bit-
459 level support. ACPICA BZ 1240. Lv Zheng.
461 Fixed an issue where the \_SB._INI method sometimes must be evaluated
462 before any _REG methods are evaluated. Lv Zheng.
464 Implemented several changes related to ACPI table support
465 (Headers/Disassembler/TableCompiler):
466 NFIT: For ACPI 6.1, updated to add some additional new fields and
468 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
470 DMAR: Added new constants per the 10/2014 DMAR spec.
471 IORT: Added new subtable per the 10/2015 IORT spec.
472 HEST: For ACPI 6.1, added new constants and new subtable.
473 DBG2: Added new constants per the 12/2015 DBG2 spec.
474 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
476 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
478 Updated header support for the DMAR table to match the current version of
481 Added extensions to the ASL Concatenate operator to allow any ACPI object
482 to be passed as an operand. Any object other than Integer/String/Buffer
483 simply returns a string containing the object type. This extends the
484 usefulness of the Printf macros. Previously, Concatenate would abort the
485 control method if a non-data object was encountered.
487 ACPICA source code: Deployed the C "const" keyword across the source code
488 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
490 Example Code and Data Size: These are the sizes for the OS-independent
491 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
492 debug version of the code includes the debug output trace mechanism and
493 has a much larger code and data size.
496 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
497 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
499 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
500 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
503 2) iASL Compiler/Disassembler and Tools:
505 iASL/Disassembler: Improved the heuristic used to determine the number of
506 arguments for an externally defined control method (a method in another
507 table). Although this is an improvement, there is no deterministic way to
508 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
509 will completely solve this problem as it is deployed (automatically) in
512 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
513 statements that could cause errors when the disassembled file is
514 compiled. ACPICA BZ 1243. David Box.
516 iASL: Fixed a regression caused by the merger of the two versions of the
517 local strtoul64. Because of a dependency on a global variable, strtoul64
518 could return an error for integers greater than a 32-bit value. ACPICA BZ
521 iASL: Fixed a regression where a fault could occur for an ASL Return
522 statement if it invokes a control method that is not resolved. ACPICA BZ
525 AcpiXtract: Improved input file validation: detection of binary files and
526 non-acpidump text files.
528 ----------------------------------------
529 12 February 2016. Summary of changes for version 20160212:
531 1) ACPICA kernel-resident subsystem:
533 Implemented full support for the ACPI 6.1 specification (released in
534 January). This version of the specification is available at:
535 http://www.uefi.org/specifications
537 Only a relatively small number of changes were required in ACPICA to
538 support ACPI 6.1, in these areas:
539 - New predefined names
541 - A new subtable for HEST
542 - A few other header changes for new values
544 Ensure \_SB_._INI is executed before any _REG methods are executed. There
545 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
547 Reverted a change made in version 20151218 which enabled method
548 invocations to be targets of various ASL operators (SuperName and Target
549 grammar elements). While the new behavior is supported by the ACPI
550 specification, other AML interpreters do not support this behavior and
551 never will. The ACPI specification will be updated for ACPI 6.2 to remove
552 this support. Therefore, the change was reverted to the original ACPICA
555 ACPICA now supports the GCC 6 compiler.
557 Current Release: (Note: build changes increased sizes)
558 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
559 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
561 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
562 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
565 2) iASL Compiler/Disassembler and Tools:
567 Completed full support for the ACPI 6.0 External() AML opcode. The
568 compiler emits an external AML opcode for each ASL External statement.
569 This opcode is used by the disassembler to assist with the disassembly of
570 external control methods by specifying the required number of arguments
571 for the method. AML interpreters do not use this opcode. To ensure that
572 interpreters do not even see the opcode, a block of one or more external
573 opcodes is surrounded by an "If(0)" construct. As this feature becomes
574 commonly deployed in BIOS code, the ability of disassemblers to correctly
575 disassemble AML code will be greatly improved. David Box.
577 iASL: Implemented support for an optional cross-reference output file.
578 The -lx option will create a the cross-reference file with the suffix
579 "xrf". Three different types of cross-reference are created in this file:
580 - List of object references made from within each control method
581 - Invocation (caller) list for each user-defined control method
582 - List of references to each non-method object in the namespace
584 iASL: Method invocations as ASL Target operands are now disallowed and
585 flagged as errors in preparation for ACPI 6.2 (see the description of the
588 ----------------------------------------
589 8 January 2016. Summary of changes for version 20160108:
591 1) ACPICA kernel-resident subsystem:
593 Updated all ACPICA copyrights and signons to 2016: Added the 2016
594 copyright to all source code module headers and utility/tool signons.
595 This includes the standard Linux dual-license header. This affects
596 virtually every file in the ACPICA core subsystem, iASL compiler, all
597 ACPICA utilities, and the ACPICA test suite.
599 Fixed a regression introduced in version 20151218 concerning the
600 execution of so-called module-level ASL/AML code. Namespace objects
601 created under a module-level If() construct were not properly/fully
602 entered into the namespace and could cause an interpreter fault when
605 Example Code and Data Size: These are the sizes for the OS-independent
606 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
607 debug version of the code includes the debug output trace mechanism and
608 has a much larger code and data size.
611 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
612 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
614 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
615 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
618 2) iASL Compiler/Disassembler and Tools:
620 Fixed a problem with the compilation of the GpioIo and GpioInt resource
621 descriptors. The _PIN field name was incorrectly defined to be an array
622 of 32-bit values, but the _PIN values are in fact 16 bits each. This
623 would cause incorrect bit width warnings when using Word (16-bit) fields
624 to access the descriptors.
627 ----------------------------------------
628 18 December 2015. Summary of changes for version 20151218:
630 1) ACPICA kernel-resident subsystem:
632 Implemented per-AML-table execution of "module-level code" as individual
633 ACPI tables are loaded into the namespace during ACPICA initialization.
634 In other words, any module-level code within an AML table is executed
635 immediately after the table is loaded, instead of batched and executed
636 after all of the tables have been loaded. This provides compatibility
637 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
640 To fully support the feature above, the default operation region handlers
641 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
642 installed before any ACPI tables are loaded. This enables module-level
643 code to access these address spaces during the table load and module-
644 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
647 Implemented several changes to the internal _REG support in conjunction
648 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
649 utilities for the changes above. Although these tools were changed, host
650 operating systems that simply use the default handlers for SystemMemory,
651 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
653 For example, in the code below, DEV1 is conditionally added to the
654 namespace by the DSDT via module-level code that accesses an operation
655 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
656 created immediately after the DSDT is loaded in order for the SSDT to
657 successfully reference DEV1. Previously, this code would cause an
658 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
659 fully supported by ACPICA.
661 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
663 OperationRegion (OPR1, SystemMemory, 0x400, 32)
664 Field (OPR1, AnyAcc, NoLock, Preserve)
675 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
677 External (\DEV1, DeviceObj)
683 Fixed an AML interpreter problem where control method invocations were
684 not handled correctly when the invocation was itself a SuperName argument
685 to another ASL operator. In these cases, the method was not invoked.
686 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
694 Signal, Release, Reset
697 Implemented automatic String-to-ObjectReference conversion support for
698 packages returned by predefined names (such as _DEP). A common BIOS error
699 is to add double quotes around an ObjectReference namepath, which turns
700 the reference into an unexpected string object. This support detects the
701 problem and corrects it before the package is returned to the caller that
702 invoked the method. Lv Zheng.
704 Implemented extensions to the Concatenate operator. Concatenate now
705 accepts any type of object, it is not restricted to simply
706 Integer/String/Buffer. For objects other than these 3 basic data types,
707 the argument is treated as a string containing the name of the object
708 type. This expands the utility of Concatenate and the Printf/Fprintf
709 macros. ACPICA BZ 1222.
711 Cleaned up the output of the ASL Debug object. The timer() value is now
712 optional and no longer emitted by default. Also, the basic data types of
713 Integer/String/Buffer are simply emitted as their values, without a data
714 type string -- since the data type is obvious from the output. ACPICA BZ
717 Example Code and Data Size: These are the sizes for the OS-independent
718 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
719 debug version of the code includes the debug output trace mechanism and
720 has a much larger code and data size.
723 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
724 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
726 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
727 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
730 2) iASL Compiler/Disassembler and Tools:
732 iASL: Fixed some issues with the ASL Include() operator. This operator
733 was incorrectly defined in the iASL parser rules, causing a new scope to
734 be opened for the code within the include file. This could lead to
735 several issues, including allowing ASL code that is technically illegal
736 and not supported by AML interpreters. Note, this does not affect the
737 related #include preprocessor operator. ACPICA BZ 1212.
739 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
740 operator is essentially an ASL macro since there is no AML opcode
741 associated with it. The code emitted by the iASL compiler for ElseIf is
742 an Else opcode followed immediately by an If opcode. The disassembler
743 will now emit an ElseIf if it finds an Else immediately followed by an
744 If. This simplifies the decoded ASL, especially for deeply nested
745 If..Else and large Switch constructs. Thus, the disassembled code more
746 closely follows the original source ASL. ACPICA BZ 1211. Example:
758 ElseIf (Arg0 == 0x02)
763 AcpiExec: Added support for the new module level code behavior and the
764 early region installation. This required a small change to the
765 initialization, since AcpiExec must install its own operation region
768 AcpiExec: Added support to make the debug object timer optional. Default
769 is timer disabled. This cleans up the debug object output -- the timer
772 AcpiExec: Multiple ACPI tables are now loaded in the order that they
773 appear on the command line. This can be important when there are
774 interdependencies/references between the tables.
776 iASL/Templates. Add support to generate template files with multiple
777 SSDTs within a single output file. Also added ommand line support to
778 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
782 ----------------------------------------
783 24 November 2015. Summary of changes for version 20151124:
785 1) ACPICA kernel-resident subsystem:
787 Fixed a possible regression for a previous update to FADT handling. The
788 FADT no longer has a fixed table ID, causing some issues with code that
789 was hardwired to a specific ID. Lv Zheng.
791 Fixed a problem where the method auto-serialization could interfere with
792 the current SyncLevel. This change makes the auto-serialization support
793 transparent to the SyncLevel support and management.
795 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
796 interface is intended for early access to the namespace during the
797 initial namespace device discovery walk. The _SUB method has been seen to
798 access operation regions in some cases, causing errors because the
799 operation regions are not fully initialized.
801 AML Debugger: Fixed some issues with the terminate/quit/exit commands
802 that can cause faults. Lv Zheng.
804 AML Debugger: Add thread ID support so that single-step mode only applies
805 to the AML Debugger thread. This prevents runtime errors within some
808 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
809 methods that are invoked by this interface are optional, removed warnings
810 emitted for the case where one or more of these methods do not exist.
811 ACPICA BZ 1208, original change by Prarit Bhargava.
813 Made a major pass through the entire ACPICA source code base to
814 standardize formatting that has diverged a bit over time. There are no
815 functional changes, but this will of course cause quite a few code
816 differences from the previous ACPICA release.
818 Example Code and Data Size: These are the sizes for the OS-independent
819 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
820 debug version of the code includes the debug output trace mechanism and
821 has a much larger code and data size.
824 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
825 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
827 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
828 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
831 2) iASL Compiler/Disassembler and Tools:
833 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
834 definition blocks within a single ASL file and the resulting AML file.
835 Support for this type of file was also added to the various tools that
836 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
837 example code below shows two definition blocks within the same file:
839 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
843 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
847 iASL: Enhanced typechecking for the Name() operator. All expressions for
848 the value of the named object must be reduced/folded to a single constant
849 at compile time, as per the ACPI specification (the AML definition of
852 iASL: Fixed some code indentation issues for the -ic and -ia options (C
853 and assembly headers). Now all emitted code correctly begins in column 1.
855 iASL: Added an error message for an attempt to open a Scope() on an
856 object defined in an SSDT. The DSDT is always loaded into the namespace
857 first, so any attempt to open a Scope on an SSDT object will fail at
861 ----------------------------------------
862 30 September 2015. Summary of changes for version 20150930:
864 1) ACPICA kernel-resident subsystem:
866 Debugger: Implemented several changes and bug fixes to assist support for
867 the in-kernel version of the AML debugger. Lv Zheng.
868 - Fix the "predefined" command for in-kernel debugger.
869 - Do not enter debug command loop for the help and version commands.
870 - Disallow "execute" command during execution/single-step of a method.
872 Interpreter: Updated runtime typechecking for all operators that have
873 target operands. The operand is resolved and validated that it is legal.
874 For example, the target cannot be a non-data object such as a Device,
875 Mutex, ThermalZone, etc., as per the ACPI specification.
877 Debugger: Fixed the double-mutex user I/O handshake to work when local
878 deadlock detection is enabled.
880 Debugger: limited display of method locals and arguments (LocalX and
881 ArgX) to only those that have actually been initialized. This prevents
882 lines of extraneous output.
884 Updated the definition of the NFIT table to correct the bit polarity of
885 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
887 Example Code and Data Size: These are the sizes for the OS-independent
888 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
889 debug version of the code includes the debug output trace mechanism and
890 has a much larger code and data size.
893 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
894 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
896 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
897 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
900 2) iASL Compiler/Disassembler and Tools:
902 iASL: Improved the compile-time typechecking for operands of many of the
905 -- Added an option to disable compiler operand/operator typechecking (-
908 -- For the following operators, the TermArg operands are now validated
909 when possible to be Integer data objects: BankField, OperationRegion,
910 DataTableRegion, Buffer, and Package.
912 -- Store (Source, Target): Both the source and target operands are
913 resolved and checked that the operands are both legal. For example,
914 neither operand can be a non-data object such as a Device, Mutex,
915 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
916 operator can be used to store an object to any type of target object.
918 -- Store (Source, Target): If the source is a Package object, the target
919 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
920 is a Package, the source must also be a Package.
922 -- Store (Source, Target): A warning is issued if the source and target
923 resolve to the identical named object.
925 -- Store (Source, <method invocation>): An error is generated for the
926 target method invocation, as this construct is not supported by the AML
929 -- For all ASL math and logic operators, the target operand must be a
930 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
931 includes the function return value also.
933 -- External declarations are also included in the typechecking where
934 possible. External objects defined using the UnknownObj keyword cannot be
935 typechecked, however.
937 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
939 - Legacy code: Index(PKG1, 3)
940 - New ASL+ code: PKG1[3]
941 This completes the ACPI 6.0 ASL+ support as it was the only operator not
944 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
945 spaces were inadvertently appended to the filename, causing file access
946 and deletion problems on some systems.
948 ASL Test Suite (ASLTS): Updated the master makefile to generate all
949 possible compiler output files when building the test suite -- thus
950 exercising these features of the compiler. These files are automatically
951 deleted when the test suite exits.
954 ----------------------------------------
955 18 August 2015. Summary of changes for version 20150818:
957 1) ACPICA kernel-resident subsystem:
959 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
960 Zheng. ACPICA BZ 1186.
962 Completed development to ensure that the ACPICA Disassembler and Debugger
963 are fully standalone components of ACPICA. Removed cross-component
964 dependences. Lv Zheng.
966 The max-number-of-AML-loops is now runtime configurable (previously was
967 compile-time only). This is essentially a loop timeout to force-abort
968 infinite AML loops. ACPCIA BZ 1192.
970 Debugger: Cleanup output to dump ACPI names and namepaths without any
971 trailing underscores. Lv Zheng. ACPICA BZ 1135.
973 Removed unnecessary conditional compilations across the Debugger and
974 Disassembler components where entire modules could be left uncompiled.
976 The aapits test is deprecated and has been removed from the ACPICA git
977 tree. The test has never been completed and has not been maintained, thus
978 becoming rather useless. ACPICA BZ 1015, 794.
980 A batch of small changes to close bugzilla and other reports:
981 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
982 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
983 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
984 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
986 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
988 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
990 - Debugger: Split debugger initialization/termination interfaces. Lv
992 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
994 - AcpiExec: Add debug message during _REG method phase during table
996 - AcpiNames: Fix a regression where some output was missing and no longer
998 - Debugger: General cleanup and simplification. Lv Zheng.
999 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1001 Example Code and Data Size: These are the sizes for the OS-independent
1002 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1003 debug version of the code includes the debug output trace mechanism and
1004 has a much larger code and data size.
1007 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1008 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1010 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1011 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1014 2) iASL Compiler/Disassembler and Tools:
1016 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1017 were not handled properly and caused load errors. Now, properly invoke
1018 and use the ACPICA auto-reallocate mechanism for ACPI table data
1019 structures. ACPICA BZ 1188
1021 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1024 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1025 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1026 executed during initialization. ACPICA BZ 1187, 1189.
1028 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1029 that corresponds to each disassembled ASL statement, to simplify
1030 debugging. ACPICA BZ 1191.
1032 Debugger: Add option to the "objects" command to display a summary of the
1033 current namespace objects (Object type and count). This is displayed if
1034 the command is entered with no arguments.
1036 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1039 ----------------------------------------
1040 17 July 2015. Summary of changes for version 20150717:
1042 1) ACPICA kernel-resident subsystem:
1044 Improved the partitioning between the Debugger and Disassembler
1045 components. This allows the Debugger to be used standalone within kernel
1046 code without the Disassembler (which is used for single stepping also).
1047 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1049 Debugger: Implemented a new command to trace the execution of control
1050 methods (Trace). This is especially useful for the in-kernel version of
1051 the debugger when file I/O may not be available for method trace output.
1052 See the ACPICA reference for more information. Lv Zheng.
1054 Moved all C library prototypes (used for the local versions of these
1055 functions when requested) to a new header, acclib.h
1056 Cleaned up the use of non-ANSI C library functions. These functions are
1057 implemented locally in ACPICA. Moved all such functions to a common
1058 source file, utnonansi.c
1060 Debugger: Fixed a problem with the "!!" command (get last command
1061 executed) where the debugger could enter an infinite loop and eventually
1064 Removed the use of local macros that were used for some of the standard C
1065 library functions to automatically cast input parameters. This mostly
1066 affected the is* functions where the input parameter is defined to be an
1067 int. This required a few modifications to the main ACPICA source code to
1068 provide casting for these functions and eliminate possible compiler
1069 warnings for these parameters.
1071 Across the source code, added additional status/error checking to resolve
1072 issues discovered by static source code analysis tools such as Coverity.
1074 Example Code and Data Size: These are the sizes for the OS-independent
1075 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1076 debug version of the code includes the debug output trace mechanism and
1077 has a much larger code and data size.
1080 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1081 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1083 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1084 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1087 2) iASL Compiler/Disassembler and Tools:
1089 iASL: Fixed a regression where the device map file feature no longer
1090 worked properly when used in conjunction with the disassembler. It only
1091 worked properly with the compiler itself.
1093 iASL: Implemented a new warning for method LocalX variables that are set
1094 but never used (similar to a C compiler such as gcc). This also applies
1095 to ArgX variables that are not defined by the parent method, and are
1096 instead (legally) used as local variables.
1098 iASL/Preprocessor: Finished the pass-through of line numbers from the
1099 preprocessor to the compiler. This ensures that compiler errors/warnings
1100 have the correct original line numbers and filenames, regardless of any
1103 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1104 pass-through of comments to the preprocessor output file (which becomes
1105 the compiler input file). Also fixed a problem with // comments that
1106 appear after a math expression.
1108 iASL: Added support for the TCPA server table to the table compiler and
1109 template generator. (The client table was already previously supported)
1111 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1112 identify the iASL compiler.
1114 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1115 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1118 AcpiHelp: Update to expand help messages for the iASL preprocessor
1122 ----------------------------------------
1123 19 June 2015. Summary of changes for version 20150619:
1125 Two regressions in version 20150616 have been addressed:
1127 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1128 etc.) This update changes ACPICA to only use the standard headers for
1129 functions, or the prototypes for the local versions of the C library
1130 functions. Across the source code, this required some additional casts
1131 for some Clib invocations for portability. Moved all local prototypes to
1132 a new file, acclib.h
1134 Fixes several problems with recent changes to the handling of the FACS
1135 table that could cause some systems not to boot.
1138 ----------------------------------------
1139 16 June 2015. Summary of changes for version 20150616:
1142 1) ACPICA kernel-resident subsystem:
1144 Across the entire ACPICA source code base, the various macros for the C
1145 library functions (such as ACPI_STRLEN, etc.) have been removed and
1146 replaced by the standard C library names (strlen, etc.) The original
1147 purpose for these macros is no longer applicable. This simplification
1148 reduces the number of macros used in the ACPICA source code
1149 significantly, improving readability and maintainability.
1151 Implemented support for a new ACPI table, the OSDT. This table, the
1152 "override" SDT, can be loaded directly by the host OS at boot time. It
1153 enables the replacement of existing namespace objects that were installed
1154 via the DSDT and/or SSDTs. The primary purpose for this is to replace
1155 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
1156 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
1159 Added support for systems with (improperly) two FACS tables -- a "32-bit"
1160 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
1161 X field). This change will support both automatically. There continues to
1162 be systems found with this issue. This support requires a change to the
1163 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
1164 been added to allow the host to select which FACS is desired
1165 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
1168 Added a new feature to allow for systems that do not contain an FACS.
1169 Although this is already supported on hardware-reduced platforms, the
1170 feature has been extended for all platforms. The reasoning is that we do
1171 not want to abort the entire ACPICA initialization just because the
1172 system is seriously buggy and has no FACS.
1174 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
1175 not correctly transcribed from the ACPI specification in ACPICA version
1178 Implemented support for the _CLS object in the AcpiGetObjectInfo external
1181 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
1182 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
1183 compiler also updated. Note: The TCPA "server" table is not supported by
1184 the disassembler/table-compiler at this time.
1186 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
1188 Example Code and Data Size: These are the sizes for the OS-independent
1189 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1190 debug version of the code includes the debug output trace mechanism and
1191 has a much larger code and data size.
1194 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1195 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1197 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1198 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1201 2) iASL Compiler/Disassembler and Tools:
1203 Disassembler: Fixed a problem with the new symbolic operator disassembler
1204 where incorrect ASL code could be emitted in some cases for the "non-
1205 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
1206 ShiftRight. The actual problem cases seem to be rather unusual in common
1207 ASL code, however. David Box.
1209 Modified the linux version of acpidump to obtain ACPI tables from not
1210 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
1213 iASL: Fixed a problem where the user preprocessor output file (.i)
1214 contained extra data that was not expected. The compiler was using this
1215 file as a temporary file and passed through #line directives in order to
1216 keep compiler error messages in sync with the input file and line number
1217 across multiple include files. The (.i) is no longer a temporary file as
1218 the compiler uses a new, different file for the original purpose.
1220 iASL: Fixed a problem where comments within the original ASL source code
1221 file were not passed through to the preprocessor output file, nor any
1224 iASL: Fixed some issues for the handling of the "#include" preprocessor
1225 directive and the similar (but not the same) "Include" ASL operator.
1227 iASL: Add support for the new OSDT in both the disassembler and compiler.
1229 iASL: Fixed a problem with the constant folding support where a Buffer
1230 object could be incorrectly generated (incorrectly formed) during a
1231 conversion to a Store() operator.
1233 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
1234 description text for the _REV predefined name. _REV now permanently
1235 returns 2, as per the ACPI 6.0 specification.
1237 Debugger: Enhanced the output of the Debug ASL object for references
1238 produced by the Index operator. For Buffers and strings, only output the
1239 actual byte pointed to by the index. For packages, only print the single
1240 package element decoded by the index. Previously, the entire
1241 buffer/string/package was emitted.
1243 iASL/Table-compiler: Fixed a regression where the "generic" data types
1244 were no longer recognized, causing errors.
1247 ----------------------------------------
1248 15 May 2015. Summary of changes for version 20150515:
1250 This release implements most of ACPI 6.0 as described below.
1252 1) ACPICA kernel-resident subsystem:
1254 Implemented runtime argument checking and return value checking for all
1255 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
1256 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
1258 Example Code and Data Size: These are the sizes for the OS-independent
1259 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1260 debug version of the code includes the debug output trace mechanism and
1261 has a much larger code and data size.
1264 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1265 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1267 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1268 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1271 2) iASL Compiler/Disassembler and Tools:
1273 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
1274 names (argument count validation and return value typechecking.)
1276 iASL disassembler and table compiler: implemented support for all new
1277 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
1279 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
1282 iASL preprocessor: Added a new directive to enable inclusion of binary
1283 blobs into ASL code. The new directive is #includebuffer. It takes a
1284 binary file as input and emits a named ascii buffer object into the ASL
1287 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
1289 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
1292 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
1296 ----------------------------------------
1297 10 April 2015. Summary of changes for version 20150410:
1299 Reverted a change introduced in version 20150408 that caused
1300 a regression in the disassembler where incorrect operator
1301 symbols could be emitted.
1304 ----------------------------------------
1305 08 April 2015. Summary of changes for version 20150408:
1308 1) ACPICA kernel-resident subsystem:
1310 Permanently set the return value for the _REV predefined name. It now
1311 returns 2 (was 5). This matches other ACPI implementations. _REV will be
1312 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
1313 for ACPI 2.0 and later. It should never be used to differentiate or
1314 identify operating systems.
1316 Added the "Windows 2015" string to the _OSI support. ACPICA will now
1317 return TRUE to a query with this string.
1319 Fixed several issues with the local version of the printf function.
1321 Added the C99 compiler option (-std=c99) to the Unix makefiles.
1324 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
1325 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
1327 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1328 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1331 2) iASL Compiler/Disassembler and Tools:
1333 iASL: Implemented an enhancement to the constant folding feature to
1334 transform the parse tree to a simple Store operation whenever possible:
1335 Add (2, 3, X) ==> is converted to: Store (5, X)
1336 X = 2 + 3 ==> is converted to: Store (5, X)
1338 Updated support for the SLIC table (Software Licensing Description Table)
1339 in both the Data Table compiler and the disassembler. The SLIC table
1340 support now conforms to "Microsoft Software Licensing Tables (SLIC and
1341 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
1342 following the ACPI header is now defined to be "Proprietary Data", and as
1343 such, can only be entered or displayed as a hex data block.
1345 Implemented full support for the MSDM table as described in the document
1346 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
1347 following the ACPI header is defined to be "Proprietary Data", and can
1348 only be entered or displayed as a hex data block.
1350 Implemented the -Pn option for the iASL Table Compiler (was only
1351 implemented for the ASL compiler). This option disables the iASL
1354 Disassembler: For disassembly of Data Tables, added a comment field
1355 around the Ascii equivalent data that is emitted as part of the "Raw
1356 Table Data" block. This prevents the iASL Preprocessor from possible
1357 confusion if/when the table is compiled.
1359 Disassembler: Added an option (-df) to force the disassembler to assume
1360 that the table being disassembled contains valid AML. This feature is
1361 useful for disassembling AML files that contain ACPI signatures other
1362 than DSDT or SSDT (such as OEMx or other signatures).
1364 Changes for the EFI version of the tools:
1365 1) Fixed a build error/issue
1366 2) Fixed a cast warning
1368 iASL: Fixed a path issue with the __FILE__ operator by making the
1369 directory prefix optional within the internal SplitInputFilename
1372 Debugger: Removed some unused global variables.
1374 Tests: Updated the makefile for proper generation of the AAPITS suite.
1377 ----------------------------------------
1378 04 February 2015. Summary of changes for version 20150204:
1380 ACPICA kernel-resident subsystem:
1382 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1383 copyright to all module headers and signons, including the standard Linux
1384 header. This affects virtually every file in the ACPICA core subsystem,
1385 iASL compiler, all ACPICA utilities, and the test suites.
1387 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
1388 A raw gpe handling mechanism was created to allow better handling of GPE
1389 storms that aren't easily managed by the normal handler. The raw handler
1390 allows disabling/renabling of the the GPE so that interrupt storms can be
1391 avoided in cases where events cannot be timely serviced. In this
1392 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
1393 GPE. This API will leave the reference counts undisturbed, thereby
1394 preventing unintentional clearing of the GPE when the intent in only to
1395 temporarily disable it. Raw handlers allow enabling and disabling of a
1396 GPE by removing GPE register locking. As such, raw handlers much provide
1397 their own locks while using GPE API's to protect access to GPE data
1401 Events: Always modify GPE registers under the GPE lock.
1402 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
1403 values. Reported as bug by joe.liu@apple.com.
1405 Unix makefiles: Separate option to disable optimizations and
1406 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
1407 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
1408 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
1409 errors when building ACPICA. This allows disabling the option without
1410 also having to disable optimazations.
1414 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1415 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
1418 --------------------------------------
1419 07 November 2014. Summary of changes for version 20141107:
1421 This release is available at https://acpica.org/downloads
1423 This release introduces and implements language extensions to ASL that
1424 provide support for symbolic ("C-style") operators and expressions. These
1425 language extensions are known collectively as ASL+.
1428 1) iASL Compiler/Disassembler and Tools:
1430 Disassembler: Fixed a problem with disassembly of the UartSerialBus
1431 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
1434 Disassembler: Fixed the Unicode macro support to add escape sequences.
1435 All non-printable ASCII values are emitted as escape sequences, as well
1436 as the standard escapes for quote and backslash. Ensures that the
1437 disassembled macro can be correctly recompiled.
1439 iASL: Added Printf/Fprintf macros for formatted output. These macros are
1440 translated to existing AML Concatenate and Store operations. Printf
1441 writes to the ASL Debug object. Fprintf allows the specification of an
1442 ASL name as the target. Only a single format specifier is required, %o,
1443 since the AML interpreter dynamically converts objects to the required
1446 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1447 (Concatenate (Concatenate (Concatenate ("", Arg0),
1448 ": Unexpected value for "), Arg1), ", "), Arg2),
1449 " at line "), Arg3), Debug)
1451 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
1452 Arg0, Arg1, Arg2, Arg3)
1454 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1455 ("", Arg1), ": "), Arg0), " Successful"), STR1)
1457 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
1459 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
1460 ASL parse tree before the AML code is generated. This allows blocks of
1461 ASL code to be removed in order to help locate and identify problem
1462 devices and/or code. David E. Box.
1464 AcpiExec: Added support (-fi) for an optional namespace object
1465 initialization file. This file specifies initial values for namespace
1466 objects as necessary for debugging and testing different ASL code paths
1467 that may be taken as a result of BIOS options.
1470 2) Overview of symbolic operator support for ASL (ASL+)
1471 -------------------------------------------------------
1473 As an extension to the ASL language, iASL implements support for symbolic
1474 (C-style) operators for math and logical expressions. This can greatly
1475 simplify ASL code as well as improve both readability and
1476 maintainability. These language extensions can exist concurrently with
1477 all legacy ASL code and expressions.
1479 The symbolic extensions are 100% compatible with existing AML
1480 interpreters, since no new AML opcodes are created. To implement the
1481 extensions, the iASL compiler transforms the symbolic expressions into
1482 the legacy ASL/AML equivalents at compile time.
1484 Full symbolic expressions are supported, along with the standard C
1485 precedence and associativity rules.
1487 Full disassembler support for the symbolic expressions is provided, and
1488 creates an automatic migration path for existing ASL code to ASL+ code
1489 via the disassembly process. By default, the disassembler now emits ASL+
1490 code with symbolic expressions. An option (-dl) is provided to force the
1491 disassembler to emit legacy ASL code if desired.
1493 Below is the complete list of the currently supported symbolic operators
1494 with examples. See the iASL User Guide for additional information.
1497 ASL+ Syntax Legacy ASL Equivalent
1498 ----------- ---------------------
1502 Z = X + Y Add (X, Y, Z)
1503 Z = X - Y Subtract (X, Y, Z)
1504 Z = X * Y Multiply (X, Y, Z)
1505 Z = X / Y Divide (X, Y, , Z)
1506 Z = X % Y Mod (X, Y, Z)
1507 Z = X << Y ShiftLeft (X, Y, Z)
1508 Z = X >> Y ShiftRight (X, Y, Z)
1509 Z = X & Y And (X, Y, Z)
1510 Z = X | Y Or (X, Y, Z)
1511 Z = X ^ Y Xor (X, Y, Z)
1516 // Logical operators
1518 (X == Y) LEqual (X, Y)
1519 (X != Y) LNotEqual (X, Y)
1520 (X < Y) LLess (X, Y)
1521 (X > Y) LGreater (X, Y)
1522 (X <= Y) LLessEqual (X, Y)
1523 (X >= Y) LGreaterEqual (X, Y)
1524 (X && Y) LAnd (X, Y)
1528 // Assignment and compound assignment operations
1531 X += Y Add (X, Y, X)
1532 X -= Y Subtract (X, Y, X)
1533 X *= Y Multiply (X, Y, X)
1534 X /= Y Divide (X, Y, , X)
1535 X %= Y Mod (X, Y, X)
1536 X <<= Y ShiftLeft (X, Y, X)
1537 X >>= Y ShiftRight (X, Y, X)
1538 X &= Y And (X, Y, X)
1540 X ^= Y Xor (X, Y, X)
1547 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
1548 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
1550 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
1552 And (MEMB, 0xFFFFFFF0, SRMB)
1553 Store (MEMB, Local2)
1554 Store (PDBM, Local1)
1555 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
1557 Or (PDBM, 0x02, PDBM)
1561 If (((R510 & 0x03FB) == 0x02E0) ||
1562 ((R520 & 0x03FB) == 0x02E0) ||
1563 ((R530 & 0x03FB) == 0x02E0) ||
1564 ((R540 & 0x03FB) == 0x02E0))
1566 SRMB = (MEMB & 0xFFFFFFF0)
1569 PDBM &= 0xFFFFFFFFFFFFFFF9
1575 Store (0x1234, Local1)
1576 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
1577 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
1578 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
1579 Store (Index (PKG1, 0x03), Local6)
1580 Store (Add (Local3, Local2), Debug)
1581 Add (Local1, 0x0F, Local2)
1582 Add (Local1, Multiply (Local2, Local3), Local2)
1583 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
1587 Local3 = (((Local1 + TEST) + 0x20) * Local2)
1588 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
1589 Local3 = (Local1 + (TEST + (0x20 * Local2)))
1590 Local6 = Index (PKG1, 0x03)
1591 Debug = (Local3 + Local2)
1592 Local2 = (Local1 + 0x0F)
1593 Local2 = (Local1 + (Local2 * Local3))
1594 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
1597 ----------------------------------------
1598 26 September 2014. Summary of changes for version 20140926:
1600 1) ACPICA kernel-resident subsystem:
1602 Updated the GPIO operation region handler interface (GeneralPurposeIo).
1603 In order to support GPIO Connection objects with multiple pins, along
1604 with the related Field objects, the following changes to the interface
1605 have been made: The Address is now defined to be the offset in bits of
1606 the field unit from the previous invocation of a Connection. It can be
1607 viewed as a "Pin Number Index" into the connection resource descriptor.
1608 The BitWidth is the exact bit width of the field. It is usually one bit,
1609 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
1610 additional information and examples.
1612 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
1613 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
1614 by the firmware), so that they cannot fire until they are enabled via
1615 AcpiUpdateAllGpes. Rafael J. Wysocki.
1617 Added a new return flag for the Event/GPE status interfaces --
1618 AcpiGetEventStatus and AcpiGetGpeStatus. The new
1619 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
1620 GPE currently has a handler associated with it, and can thus actually
1621 affect the system. Lv Zheng.
1623 Example Code and Data Size: These are the sizes for the OS-independent
1624 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1625 debug version of the code includes the debug output trace mechanism and
1626 has a much larger code and data size.
1629 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1630 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1632 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1633 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1635 2) iASL Compiler/Disassembler and Tools:
1637 iASL: Fixed a memory allocation/free regression introduced in 20140828
1638 that could cause the compiler to crash. This was introduced inadvertently
1639 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
1642 iASL: Removed two error messages that have been found to create false
1643 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
1644 1) Illegal forward reference within a method
1645 2) Illegal reference across two methods
1647 iASL: Implemented a new option (-lm) to create a hardware mapping file
1648 that summarizes all GPIO, I2C, SPI, and UART connections. This option
1649 works for both the compiler and disassembler. See the iASL compiler user
1650 guide for additional information and examples (section 6.4.6).
1652 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
1653 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
1654 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
1656 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
1657 unless STDIN is actually a terminal. Assists with batch-mode processing.
1660 Disassembler/AcpiHelp: Added another large group of recognized _HID
1664 ----------------------------------------
1665 28 August 2014. Summary of changes for version 20140828:
1667 1) ACPICA kernel-resident subsystem:
1669 Fixed a problem related to the internal use of the Timer() operator where
1670 a 64-bit divide could cause an attempted link to a double-precision math
1671 library. This divide is not actually necessary, so the code was
1672 restructured to eliminate it. Lv Zheng.
1674 ACPI 5.1: Added support for the runtime validation of the _DSD package
1675 (similar to the iASL support).
1677 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
1678 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
1680 Example Code and Data Size: These are the sizes for the OS-independent
1681 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1682 debug version of the code includes the debug output trace mechanism and
1683 has a much larger code and data size.
1686 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1687 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1689 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
1690 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1692 2) iASL Compiler/Disassembler and Tools:
1694 AcpiExec: Fixed a problem on unix systems where the original terminal
1695 state was not always properly restored upon exit. Seen when using the -v
1696 option. ACPICA BZ 1104.
1698 iASL: Fixed a problem with the validation of the ranges/length within the
1699 Memory24 resource descriptor. There was a boundary condition when the
1700 range was equal to the (length -1) caused by the fact that these values
1701 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
1703 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
1705 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
1707 now supported properly.
1709 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
1710 in the disassembler, data table compiler, and table template generator.
1712 iASL: Added a requirement for Device() objects that one of either a _HID
1713 or _ADR must exist within the scope of a Device, as per the ACPI
1714 specification. Remove a similar requirement that was incorrectly in place
1715 for the _DSD object.
1717 iASL: Added error detection for illegal named references within control
1718 methods that would cause runtime failures. Now trapped as errors are: 1)
1719 References to objects within a non-parent control method. 2) Forward
1720 references (within a method) -- for control methods, AML interpreters use
1721 a one-pass parse of control methods. ACPICA BZ 1008.
1723 iASL: Added error checking for dependencies related to the _PSx power
1724 methods. ACPICA BZ 1029.
1725 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
1727 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
1730 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
1731 deploying the existing object and string caches and adding new caches for
1734 iASL: Split the huge parser source file into multiple subfiles to improve
1735 manageability. Generation now requires the M4 macro preprocessor, which
1736 is part of the Bison distribution on both unix and windows platforms.
1738 AcpiSrc: Fixed and removed all extraneous warnings generated during
1739 entire ACPICA source code scan and/or conversion.
1742 ----------------------------------------
1744 24 July 2014. Summary of changes for version 20140724:
1746 The ACPI 5.1 specification has been released and is available at:
1747 http://uefi.org/specs/access
1750 0) ACPI 5.1 support in ACPICA:
1752 ACPI 5.1 is fully supported in ACPICA as of this release.
1754 New predefined names. Support includes iASL and runtime ACPICA
1756 _CCA (Cache Coherency Attribute).
1757 _DSD (Device-Specific Data). David Box.
1759 Modifications to existing ACPI tables. Support includes headers, iASL
1760 Data Table compiler, disassembler, and the template generator.
1761 FADT - New fields and flags. Graeme Gregory.
1762 GTDT - One new subtable and new fields. Tomasz Nowicki.
1763 MADT - Two new subtables. Tomasz Nowicki.
1764 PCCT - One new subtable.
1767 New notification type for System Resource Affinity change events.
1770 1) ACPICA kernel-resident subsystem:
1772 Fixed a regression introduced in 20140627 where a fault can happen during
1773 the deletion of Alias AML namespace objects. The problem affected both
1774 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
1776 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
1777 simple mechanism to enable wake GPEs that have no associated handler or
1778 control method. Rafael Wysocki.
1780 Updated the AcpiEnableGpe interface to disallow the enable if there is no
1781 handler or control method associated with the particular GPE. This will
1782 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
1784 Updated GPE handling and dispatch by disabling the GPE before clearing
1785 the status bit for edge-triggered GPEs. Lv Zheng.
1787 Added Timer() support to the AML Debug object. The current timer value is
1788 now displayed with each invocation of (Store to) the debug object to
1789 enable simple generation of execution times for AML code (method
1790 execution for example.) ACPICA BZ 1093.
1792 Example Code and Data Size: These are the sizes for the OS-independent
1793 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1794 debug version of the code includes the debug output trace mechanism and
1795 has a much larger code and data size.
1798 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
1799 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1801 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1802 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1805 2) iASL Compiler/Disassembler and Tools:
1807 Fixed an issue with the recently added local printf implementation,
1808 concerning width/precision specifiers that could cause incorrect output.
1809 Lv Zheng. ACPICA BZ 1094.
1811 Disassembler: Added support to detect buffers that contain UUIDs and
1812 disassemble them to an invocation of the ToUUID operator. Also emit
1813 commented descriptions of known ACPI-related UUIDs.
1815 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
1816 -u. Adds three new files.
1818 iASL: Update table compiler and disassembler for DMAR table changes that
1819 were introduced in September 2013. With assistance by David Woodhouse.
1821 ----------------------------------------
1822 27 June 2014. Summary of changes for version 20140627:
1824 1) ACPICA kernel-resident subsystem:
1826 Formatted Output: Implemented local versions of standard formatted output
1827 utilities such as printf, etc. Over time, it has been discovered that
1828 there are in fact many portability issues with printf, and the addition
1829 of this feature will fix/prevent these issues once and for all. Some
1830 known issues are summarized below:
1832 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
1833 for the Linux kernel and is %uI64 for some MSVC versions.
1834 2) Invoking printf consistently in a manner that is portable across both
1835 32-bit and 64-bit platforms is difficult at best in many situations.
1836 3) The output format for pointers varies from system to system (leading
1837 zeros especially), and leads to inconsistent output from ACPICA across
1839 4) Certain platform-specific printf formats may conflict with ACPICA use.
1840 5) If there is no local C library available, ACPICA now has local support
1843 -- To address these printf issues in a complete manner, ACPICA now
1844 directly implements a small subset of printf format specifiers, only
1845 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
1847 Implemented support for ACPICA generation within the EFI environment.
1848 Initially, the AcpiDump utility is supported in the UEFI shell
1849 environment. Lv Zheng.
1851 Added a new external interface, AcpiLogError, to improve ACPICA
1852 portability. This allows the host to redirect error messages from the
1853 ACPICA utilities. Lv Zheng.
1855 Added and deployed new OSL file I/O interfaces to improve ACPICA
1863 There are C library implementations of these functions in the new file
1864 service_layers/oslibcfs.c -- however, the functions can be implemented by
1865 the local host in any way necessary. Lv Zheng.
1867 Implemented a mechanism to disable/enable ACPI table checksum validation
1868 at runtime. This can be useful when loading tables very early during OS
1869 initialization when it may not be possible to map the entire table in
1870 order to compute the checksum. Lv Zheng.
1872 Fixed a buffer allocation issue for the Generic Serial Bus support.
1873 Originally, a fixed buffer length was used. This change allows for
1874 variable-length buffers based upon the protocol indicated by the field
1875 access attributes. Reported by Lan Tianyu. Lv Zheng.
1877 Fixed a problem where an object detached from a namespace node was not
1878 properly terminated/cleared and could cause a circular list problem if
1879 reattached. ACPICA BZ 1063. David Box.
1881 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
1883 Fixed a possible memory leak in an error return path within the function
1884 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
1886 Example Code and Data Size: These are the sizes for the OS-independent
1887 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1888 debug version of the code includes the debug output trace mechanism and
1889 has a much larger code and data size.
1892 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1893 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1895 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1896 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1899 2) iASL Compiler/Disassembler and Tools:
1901 Disassembler: Add dump of ASCII equivalent text within a comment at the
1902 end of each line of the output for the Buffer() ASL operator.
1904 AcpiDump: Miscellaneous changes:
1905 Fixed repetitive table dump in -n mode.
1906 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
1907 the ACPI 2.0 GUID fails.
1909 iASL: Fixed a problem where the compiler could fault if incorrectly given
1910 an acpidump output file as input. ACPICA BZ 1088. David Box.
1912 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
1913 they are invoked without any arguments.
1915 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
1916 1086. Colin Ian King.
1918 Disassembler: Cleaned up a block of code that extracts a parent Op
1919 object. Added a comment that explains that the parent is guaranteed to be
1920 valid in this case. ACPICA BZ 1069.
1923 ----------------------------------------
1924 24 April 2014. Summary of changes for version 20140424:
1926 1) ACPICA kernel-resident subsystem:
1928 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
1929 Some of these tables are known to contain a trailing NULL entry. Lv
1932 Removed an extraneous error message for the case where there are a large
1933 number of system GPEs (> 124). This was the "32-bit FADT register is too
1934 long to convert to GAS struct" message, which is irrelevant for GPEs
1935 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
1936 (limited capacity) GAS bit length. Also, several changes to ensure proper
1937 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
1940 Implemented and deployed additional configuration support for the public
1941 ACPICA external interfaces. Entire classes of interfaces can now be
1942 easily modified or configured out, replaced by stubbed inline functions
1943 by default. Lv Zheng.
1945 Moved all public ACPICA runtime configuration globals to the public
1946 ACPICA external interface file for convenience. Also, removed some
1947 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
1949 Documentation: Added a new section to the ACPICA reference describing the
1950 maximum number of GPEs that can be supported by the FADT-defined GPEs in
1951 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
1954 Example Code and Data Size: These are the sizes for the OS-independent
1955 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1956 debug version of the code includes the debug output trace mechanism and
1957 has a much larger code and data size.
1960 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1961 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1963 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1964 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1967 2) iASL Compiler/Disassembler and Tools:
1969 iASL and disassembler: Add full support for the LPIT table (Low Power
1970 Idle Table). Includes support in the disassembler, data table compiler,
1971 and template generator.
1974 1) Add option to force the use of the RSDT (over the XSDT).
1975 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
1977 iASL: Add check for predefined packages that are too large. For
1978 predefined names that contain subpackages, check if each subpackage is
1979 too large. (Check for too small already exists.)
1981 Debugger: Updated the GPE command (which simulates a GPE by executing the
1982 GPE code paths in ACPICA). The GPE device is now optional, and defaults
1983 to the GPE 0/1 FADT-defined blocks.
1985 Unix application OSL: Update line-editing support. Add additional error
1986 checking and take care not to reset terminal attributes on exit if they
1987 were never set. This should help guarantee that the terminal is always
1988 left in the previous state on program exit.
1991 ----------------------------------------
1992 25 March 2014. Summary of changes for version 20140325:
1994 1) ACPICA kernel-resident subsystem:
1996 Updated the auto-serialize feature for control methods. This feature
1997 automatically serializes all methods that create named objects in order
1998 to prevent runtime errors. The update adds support to ignore the
1999 currently executing AML SyncLevel when invoking such a method, in order
2000 to prevent disruption of any existing SyncLevel priorities that may exist
2001 in the AML code. Although the use of SyncLevels is relatively rare, this
2002 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2003 appear on some machines starting with the 20140214 release.
2005 Added a new external interface to allow the host to install ACPI tables
2006 very early, before the namespace is even created. AcpiInstallTable gives
2007 the host additional flexibility for ACPI table management. Tables can be
2008 installed directly by the host as if they had originally appeared in the
2009 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2010 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2011 with additional internal restructuring and cleanup. See the ACPICA
2012 Reference for interface details. Lv Zheng.
2014 Added validation of the checksum for all incoming dynamically loaded
2015 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2018 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2019 and GPE handler removal. Restructured calls to eliminate possible race
2020 conditions. Lv Zheng.
2022 Added a warning for the use/execution of the ASL/AML Unload (table)
2023 operator. This will help detect and identify machines that use this
2024 operator if and when it is ever used. This operator has never been seen
2025 in the field and the usage model and possible side-effects of the drastic
2026 runtime action of a full table removal are unknown.
2028 Reverted the use of #pragma push/pop which was introduced in the 20140214
2029 release. It appears that push and pop are not implemented by enough
2030 compilers to make the use of this feature feasible for ACPICA at this
2031 time. However, these operators may be deployed in a future ACPICA
2034 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2037 Source code generation:
2038 1) Disabled the use of the "strchr" macro for the gcc-specific
2039 generation. For some versions of gcc, this macro can periodically expose
2040 a compiler bug which in turn causes compile-time error(s).
2041 2) Added support for PPC64 compilation. Colin Ian King.
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: 97.0K Code, 27.2K Data, 124.2K Total
2050 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2052 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2053 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2056 2) iASL Compiler/Disassembler and Tools:
2058 Disassembler: Added several new features to improve the readability of
2059 the resulting ASL code. Extra information is emitted within comment
2060 fields in the ASL code:
2061 1) Known _HID/_CID values are decoded to descriptive text.
2062 2) Standard values for the Notify() operator are decoded to descriptive
2064 3) Target operands are expanded to full pathnames (in a comment) when
2067 Disassembler: Miscellaneous updates for extern() handling:
2068 1) Abort compiler if file specified by -fe option does not exist.
2069 2) Silence unnecessary warnings about argument count mismatches.
2070 3) Update warning messages concerning unresolved method externals.
2071 4) Emit "UnknownObj" keyword for externals whose type cannot be
2075 1) Added the -a option to display both the ASL syntax and the AML
2076 encoding for an input ASL operator. This effectively displays all known
2077 information about an ASL operator with one AcpiHelp invocation.
2078 2) Added substring match support (similar to a wildcard) for the -i
2079 (_HID/PNP IDs) option.
2081 iASL/Disassembler: Since this tool does not yet support execution on big-
2082 endian machines, added detection of endianness and an error message if
2083 execution is attempted on big-endian. Support for big-endian within iASL
2084 is a feature that is on the ACPICA to-be-done list.
2087 1) Remove option to extract binary files from an acpidump; this function
2088 is made obsolete by the AcpiXtract utility.
2089 2) General cleanup of open files and allocated buffers.
2092 ----------------------------------------
2093 14 February 2014. Summary of changes for version 20140214:
2095 1) ACPICA kernel-resident subsystem:
2097 Implemented a new mechanism to proactively prevent problems with ill-
2098 behaved reentrant control methods that create named ACPI objects. This
2099 behavior is illegal as per the ACPI specification, but is nonetheless
2100 frequently seen in the field. Previously, this could lead to an
2101 AE_ALREADY_EXISTS exception if the method was actually entered by more
2102 than one thread. This new mechanism detects such methods at table load
2103 time and marks them "serialized" to prevent reentrancy. A new global
2104 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2105 feature if desired. This mechanism and global option obsoletes and
2106 supersedes the previous AcpiGbl_SerializeAllMethods option.
2108 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2109 respond TRUE to _OSI queries with this string. It is the stated policy of
2110 ACPICA to add new strings to the _OSI support as soon as possible after
2111 they are defined. See the full ACPICA _OSI policy which has been added to
2112 the utilities/utosi.c file.
2114 Hardened/updated the _PRT return value auto-repair code:
2115 1) Do not abort the repair on a single subpackage failure, continue to
2116 check all subpackages.
2117 2) Add check for the minimum subpackage length (4).
2118 3) Properly handle extraneous NULL package elements.
2120 Added support to avoid the possibility of infinite loops when traversing
2121 object linked lists. Never allow an infinite loop, even in the face of
2122 corrupted object lists.
2124 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2125 pack(pop) directives to ensure that the ACPICA headers are independent of
2126 compiler settings or other host headers.
2128 Example Code and Data Size: These are the sizes for the OS-independent
2129 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2130 debug version of the code includes the debug output trace mechanism and
2131 has a much larger code and data size.
2134 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2135 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2137 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2138 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2141 2) iASL Compiler/Disassembler and Tools:
2143 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2144 first reserved field was incorrectly forced to have a value of zero. This
2145 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2147 Debugger: Added missing support for the "Extra" and "Data" subobjects
2148 when displaying object data.
2150 Debugger: Added support to display entire object linked lists when
2151 displaying object data.
2153 iASL: Removed the obsolete -g option to obtain ACPI tables from the
2154 Windows registry. This feature has been superseded by the acpidump
2158 ----------------------------------------
2159 14 January 2014. Summary of changes for version 20140114:
2161 1) ACPICA kernel-resident subsystem:
2163 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2164 copyright to all module headers and signons, including the standard Linux
2165 header. This affects virtually every file in the ACPICA core subsystem,
2166 iASL compiler, all ACPICA utilities, and the test suites.
2168 Improved parameter validation for AcpiInstallGpeBlock. Added the
2170 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
2171 2) There is not already a GPE block attached to the device.
2172 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
2175 Correctly support "references" in the ACPI_OBJECT. This change fixes the
2176 support to allow references (namespace nodes) to be passed as arguments
2177 to control methods via the evaluate object interface. This is probably
2178 most useful for testing purposes, however.
2180 Improved support for 32/64 bit physical addresses in printf()-like
2181 output. This change improves the support for physical addresses in printf
2182 debug statements and other output on both 32-bit and 64-bit hosts. It
2183 consistently outputs the appropriate number of bytes for each host. The
2184 %p specifier is unsatisfactory since it does not emit uniform output on
2185 all hosts/clib implementations (on some, leading zeros are not supported,
2186 leading to difficult-to-read output).
2188 Example Code and Data Size: These are the sizes for the OS-independent
2189 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2190 debug version of the code includes the debug output trace mechanism and
2191 has a much larger code and data size.
2194 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2195 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2197 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2198 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2201 2) iASL Compiler/Disassembler and Tools:
2203 iASL: Fix a possible fault when using the Connection() operator. Fixes a
2204 problem if the parent Field definition for the Connection operator refers
2205 to an operation region that does not exist. ACPICA BZ 1064.
2207 AcpiExec: Load of local test tables is now optional. The utility has the
2208 capability to load some various tables to test features of ACPICA.
2209 However, there are enough of them that the output of the utility became
2210 confusing. With this change, only the required local tables are displayed
2211 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
2212 line specification. This makes the default output simler and easier to
2213 understand. The -el command line option restores the original behavior
2214 for testing purposes.
2216 AcpiExec: Added support for overlapping operation regions. This change
2217 expands the simulation of operation regions by supporting regions that
2218 overlap within the given address space. Supports SystemMemory and
2219 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
2221 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
2222 allows AcpiExec to simulate these address spaces, similar to the current
2223 support for SystemMemory and SystemIO.
2225 Debugger: Added new command to read/write/compare all namespace objects.
2226 The command "test objects" will exercise the entire namespace by writing
2227 new values to each data object, and ensuring that the write was
2228 successful. The original value is then restored and verified.
2230 Debugger: Added the "test predefined" command. This change makes this
2231 test public and puts it under the new "test" command. The test executes
2232 each and every predefined name within the current namespace.
2235 ----------------------------------------
2236 18 December 2013. Summary of changes for version 20131218:
2238 Global note: The ACPI 5.0A specification was released this month. There
2239 are no changes needed for ACPICA since this release of ACPI is an
2240 errata/clarification release. The specification is available at
2244 1) ACPICA kernel-resident subsystem:
2246 Added validation of the XSDT root table if it is present. Some older
2247 platforms contain an XSDT that is ill-formed or otherwise invalid (such
2248 as containing some or all entries that are NULL pointers). This change
2249 adds a new function to validate the XSDT before actually using it. If the
2250 XSDT is found to be invalid, ACPICA will now automatically fall back to
2251 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
2252 ACPICA and enhanced by Lv Zheng and Bob Moore.
2254 Added a runtime option to ignore the XSDT and force the use of the RSDT.
2255 This change adds a runtime option that will force ACPICA to use the RSDT
2256 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
2257 requires that an XSDT be used instead of the RSDT, the XSDT has been
2258 found to be corrupt or ill-formed on some machines. Lv Zheng.
2260 Added a runtime option to favor 32-bit FADT register addresses over the
2261 64-bit addresses. This change adds an option to favor 32-bit FADT
2262 addresses when there is a conflict between the 32-bit and 64-bit versions
2263 of the same register. The default behavior is to use the 64-bit version
2264 in accordance with the ACPI specification. This can now be overridden via
2265 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
2267 During the change above, the internal "Convert FADT" and "Verify FADT"
2268 functions have been merged to simplify the code, making it easier to
2269 understand and maintain. ACPICA BZ 933.
2271 Improve exception reporting and handling for GPE block installation.
2272 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
2273 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
2275 Added helper macros to extract bus/segment numbers from the HEST table.
2276 This change adds two macros to extract the encoded bus and segment
2277 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
2278 Betty Dall <betty.dall@hp.com>
2280 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
2281 by ACPICA. It is not a public macro, so it should have no effect on
2282 existing OSV code. Lv Zheng.
2284 Example Code and Data Size: These are the sizes for the OS-independent
2285 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2286 debug version of the code includes the debug output trace mechanism and
2287 has a much larger code and data size.
2290 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2291 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2293 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2294 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2297 2) iASL Compiler/Disassembler and Tools:
2299 Disassembler: Improved pathname support for emitted External()
2300 statements. This change adds full pathname support for external names
2301 that have been resolved internally by the inclusion of additional ACPI
2302 tables (via the iASL -e option). Without this change, the disassembler
2303 can emit multiple externals for the same object, or it become confused
2304 when the Scope() operator is used on an external object. Overall, greatly
2305 improves the ability to actually recompile the emitted ASL code when
2306 objects a referenced across multiple ACPI tables. Reported by Michael
2307 Tsirkin (mst@redhat.com).
2309 Tests/ASLTS: Updated functional control suite to execute with no errors.
2310 David Box. Fixed several errors related to the testing of the interpreter
2311 slack mode. Lv Zheng.
2313 iASL: Added support to detect names that are declared within a control
2314 method, but are unused (these are temporary names that are only valid
2315 during the time the method is executing). A remark is issued for these
2316 cases. ACPICA BZ 1022.
2318 iASL: Added full support for the DBG2 table. Adds full disassembler,
2319 table compiler, and template generator support for the DBG2 table (Debug
2322 iASL: Added full support for the PCCT table, update the table definition.
2323 Updates the PCCT table definition in the actbl3.h header and adds table
2324 compiler and template generator support.
2326 iASL: Added an option to emit only error messages (no warnings/remarks).
2327 The -ve option will enable only error messages, warnings and remarks are
2328 suppressed. This can simplify debugging when only the errors are
2329 important, such as when an ACPI table is disassembled and there are many
2330 warnings and remarks -- but only the actual errors are of real interest.
2332 Example ACPICA code (source/tools/examples): Updated the example code so
2333 that it builds to an actual working program, not just example code. Added
2334 ACPI tables and execution of an example control method in the DSDT. Added
2335 makefile support for Unix generation.
2338 ----------------------------------------
2339 15 November 2013. Summary of changes for version 20131115:
2341 This release is available at https://acpica.org/downloads
2344 1) ACPICA kernel-resident subsystem:
2346 Resource Manager: Fixed loop termination for the "get AML length"
2347 function. The loop previously had an error termination on a NULL resource
2348 pointer, which can never happen since the loop simply increments a valid
2349 resource pointer. This fix changes the loop to terminate with an error on
2350 an invalid end-of-buffer condition. The problem can be seen as an
2351 infinite loop by callers to AcpiSetCurrentResources with an invalid or
2352 corrupted resource descriptor, or a resource descriptor that is missing
2353 an END_TAG descriptor. Reported by Dan Carpenter
2354 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
2356 Table unload and ACPICA termination: Delete all attached data objects
2357 during namespace node deletion. This fix updates namespace node deletion
2358 to delete the entire list of attached objects (attached via
2359 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
2360 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
2362 ACPICA termination: Added support to delete all objects attached to the
2363 root namespace node. This fix deletes any and all objects that have been
2364 attached to the root node via AcpiAttachData. Previously, none of these
2365 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
2367 Debug output: Do not emit the function nesting level for the in-kernel
2368 build. The nesting level is really only useful during a single-thread
2369 execution. Therefore, only enable this output for the AcpiExec utility.
2370 Also, only emit the thread ID when executing under AcpiExec (Context
2371 switches are still always detected and a message is emitted). ACPICA BZ
2374 Example Code and Data Size: These are the sizes for the OS-independent
2375 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2376 debug version of the code includes the debug output trace mechanism and
2377 has a much larger code and data size.
2380 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2381 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2383 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2384 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2387 2) iASL Compiler/Disassembler and Tools:
2389 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
2390 correct portable POSIX header for terminal control functions.
2392 Disassembler: Fixed control method invocation issues related to the use
2393 of the CondRefOf() operator. The problem is seen in the disassembly where
2394 control method invocations may not be disassembled properly if the
2395 control method name has been used previously as an argument to CondRefOf.
2396 The solution is to not attempt to emit an external declaration for the
2397 CondRefOf target (it is not necessary in the first place). This prevents
2398 disassembler object type confusion. ACPICA BZ 988.
2400 Unix Makefiles: Added an option to disable compiler optimizations and the
2401 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
2402 with optimizations (reportedly, gcc 4.4 for example). This change adds a
2403 command line option for make (NOOPT) that disables all compiler
2404 optimizations and the _FORTIFY_SOURCE compiler flag. The default
2405 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
2406 1034. Lv Zheng, Bob Moore.
2408 Tests/ASLTS: Added options to specify individual test cases and modes.
2409 This allows testers running aslts.sh to optionally specify individual
2410 test modes and test cases. Also added an option to disable the forced
2411 generation of the ACPICA tools from source if desired. Lv Zheng.
2413 ----------------------------------------
2414 27 September 2013. Summary of changes for version 20130927:
2416 This release is available at https://acpica.org/downloads
2419 1) ACPICA kernel-resident subsystem:
2421 Fixed a problem with store operations to reference objects. This change
2422 fixes a problem where a Store operation to an ArgX object that contained
2424 reference to a field object did not complete the automatic dereference
2426 then write to the actual field object. Instead, the object type of the
2427 field object was inadvertently changed to match the type of the source
2428 operand. The new behavior will actually write to the field object (buffer
2429 field or field unit), thus matching the correct ACPI-defined behavior.
2431 Implemented support to allow the host to redefine individual OSL
2432 prototypes. This change enables the host to redefine OSL prototypes found
2433 in the acpiosxf.h file. This allows the host to implement OSL interfaces
2434 with a macro or inlined function. Further, it allows the host to add any
2435 additional required modifiers such as __iomem, __init, __exit, etc., as
2436 necessary on a per-interface basis. Enables maximum flexibility for the
2437 OSL interfaces. Lv Zheng.
2439 Hardcoded the access width for the FADT-defined reset register. The ACPI
2440 specification requires the reset register width to be 8 bits. ACPICA now
2441 hardcodes the width to 8 and ignores the FADT width value. This provides
2442 compatibility with other ACPI implementations that have allowed BIOS code
2443 with bad register width values to go unnoticed. Matthew Garett, Bob
2447 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
2449 in the OSL header (acpiosxf). The change modifies the position of this
2450 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
2451 build issues if the OSL defines the implementation of the interface to be
2452 an inline stub function. Lv Zheng.
2454 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
2455 initialization interfaces. This change adds a new macro for the main init
2456 and terminate external interfaces in order to support hosts that require
2457 additional or different processing for these functions. Changed from
2458 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
2461 Cleaned up the memory allocation macros for configurability. In the
2463 case, the ACPI_ALLOCATE and related macros now resolve directly to their
2464 respective AcpiOs* OSL interfaces. Two options:
2465 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
2466 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2467 2) For AcpiExec (and for debugging), the macros can optionally be
2469 to the local ACPICA interfaces that track each allocation (local tracking
2470 is used to immediately detect memory leaks).
2473 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
2474 to predefine this macro to either TRUE or FALSE during the system build.
2476 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
2478 Example Code and Data Size: These are the sizes for the OS-independent
2479 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2480 debug version of the code includes the debug output trace mechanism and
2481 has a much larger code and data size.
2484 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2485 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2487 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2488 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2491 2) iASL Compiler/Disassembler and Tools:
2493 iASL: Implemented wildcard support for the -e option. This simplifies use
2494 when there are many SSDTs that must be included to resolve external
2496 declarations. ACPICA BZ 1041. Example:
2497 iasl -e ssdt*.dat -d dsdt.dat
2499 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
2500 adds a portable module that implements full history and limited line
2501 editing for Unix and Linux systems. It does not use readline() due to
2502 portability issues. Instead it uses the POSIX termio interface to put the
2503 terminal in raw input mode so that the various special keys can be
2505 (such as up/down-arrow for history support and left/right-arrow for line
2506 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
2508 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
2509 one or more spaces. This provides compatible with early or different
2510 versions of the AcpiDump utility. ACPICA BZ 1044.
2512 AcpiDump: Do not ignore tables that contain only an ACPI table header.
2513 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
2514 no other data. This change adds support to dump these tables. Any tables
2515 shorter than the length of an ACPI table header remain in error (an error
2516 message is emitted). Reported by Yi Li.
2518 Debugger: Echo actual command along with the "unknown command" message.
2520 ----------------------------------------
2521 23 August 2013. Summary of changes for version 20130823:
2523 1) ACPICA kernel-resident subsystem:
2525 Implemented support for host-installed System Control Interrupt (SCI)
2526 handlers. Certain ACPI functionality requires the host to handle raw
2527 SCIs. For example, the "SCI Doorbell" that is defined for memory power
2528 state support requires the host device driver to handle SCIs to examine
2529 if the doorbell has been activated. Multiple SCI handlers can be
2530 installed to allow for future expansion. New external interfaces are
2531 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
2532 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
2534 Operation region support: Never locally free the handler "context"
2535 pointer. This change removes some dangerous code that attempts to free
2536 the handler context pointer in some (rare) circumstances. The owner of
2537 the handler owns this pointer and the ACPICA code should never touch it.
2538 Although not seen to be an issue in any kernel, it did show up as a
2539 problem (fault) under AcpiExec. Also, set the internal storage field for
2540 the context pointer to zero when the region is deactivated, simply for
2541 sanity. David Box. ACPICA BZ 1039.
2543 AcpiRead: On error, do not modify the return value target location. If an
2544 error happens in the middle of a split 32/32 64-bit I/O operation, do not
2545 modify the target of the return value pointer. Makes the code consistent
2546 with the rest of ACPICA. Bjorn Helgaas.
2548 Example Code and Data Size: These are the sizes for the OS-independent
2549 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2550 debug version of the code includes the debug output trace mechanism and
2551 has a much larger code and data size.
2554 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2555 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2557 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2558 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
2561 2) iASL Compiler/Disassembler and Tools:
2563 AcpiDump: Implemented several new features and fixed some problems:
2564 1) Added support to dump the RSDP, RSDT, and XSDT tables.
2565 2) Added support for multiple table instances (SSDT, UEFI).
2566 3) Added option to dump "customized" (overridden) tables (-c).
2567 4) Fixed a problem where some table filenames were improperly
2569 5) Improved some error messages, removed some unnecessary messages.
2571 iASL: Implemented additional support for disassembly of ACPI tables that
2572 contain invocations of external control methods. The -fe<file> option
2573 allows the import of a file that specifies the external methods along
2574 with the required number of arguments for each -- allowing for the
2575 correct disassembly of the table. This is a workaround for a limitation
2576 of AML code where the disassembler often cannot determine the number of
2577 arguments required for an external control method and generates incorrect
2578 ASL code. See the iASL reference for details. ACPICA BZ 1030.
2580 Debugger: Implemented a new command (paths) that displays the full
2581 pathnames (namepaths) and object types of all objects in the namespace.
2582 This is an alternative to the namespace command.
2584 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
2585 mechanism and any installed handlers.
2587 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
2588 This can occur if there are too many parent prefixes in a namepath (for
2589 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
2591 Application OSLs: Set the return value for the PCI read functions. These
2592 functions simply return AE_OK, but should set the return value to zero
2593 also. This change implements this. ACPICA BZ 1038.
2595 Debugger: Prevent possible command line buffer overflow. Increase the
2596 size of a couple of the debugger line buffers, and ensure that overflow
2597 cannot happen. ACPICA BZ 1037.
2599 iASL: Changed to abort immediately on serious errors during the parsing
2600 phase. Due to the nature of ASL, there is no point in attempting to
2601 compile these types of errors, and they typically end up causing a
2602 cascade of hundreds of errors which obscure the original problem.
2604 ----------------------------------------
2605 25 July 2013. Summary of changes for version 20130725:
2607 1) ACPICA kernel-resident subsystem:
2609 Fixed a problem with the DerefOf operator where references to FieldUnits
2610 and BufferFields incorrectly returned the parent object, not the actual
2611 value of the object. After this change, a dereference of a FieldUnit
2612 reference results in a read operation on the field to get the value, and
2613 likewise, the appropriate BufferField value is extracted from the target
2616 Fixed a problem where the _WAK method could cause a fault under these
2617 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
2618 method returned no value. The problem is rarely seen because most kernels
2619 run ACPICA in slack mode.
2621 For the DerefOf operator, a fatal error now results if an attempt is made
2622 to dereference a reference (created by the Index operator) to a NULL
2623 package element. Provides compatibility with other ACPI implementations,
2624 and this behavior will be added to a future version of the ACPI
2627 The ACPI Power Management Timer (defined in the FADT) is now optional.
2628 This provides compatibility with other ACPI implementations and will
2629 appear in the next version of the ACPI specification. If there is no PM
2630 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
2631 zero in the FADT indicates no PM timer.
2633 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
2634 allows the host to globally enable/disable all vendor strings, all
2635 feature strings, or both. Intended to be primarily used for debugging
2636 purposes only. Lv Zheng.
2638 Expose the collected _OSI data to the host via a global variable. This
2639 data tracks the highest level vendor ID that has been invoked by the BIOS
2640 so that the host (and potentially ACPICA itself) can change behaviors
2641 based upon the age of the BIOS.
2643 Example Code and Data Size: These are the sizes for the OS-independent
2644 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2645 debug version of the code includes the debug output trace mechanism and
2646 has a much larger code and data size.
2649 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2650 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2652 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2653 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2656 2) iASL Compiler/Disassembler and Tools:
2658 iASL: Created the following enhancements for the -so option (create
2660 1)Add offsets for the last nameseg in each namepath for every supported
2662 2)Add support for Processor, Device, Thermal Zone, and Scope objects
2663 3)Add the actual AML opcode for the parent object of every supported
2665 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
2667 Disassembler: Emit all unresolved external symbols in a single block.
2668 These are external references to control methods that could not be
2669 resolved, and thus, the disassembler had to make a guess at the number of
2672 iASL: The argument to the -T option (create table template) is now
2673 optional. If not specified, the default table is a DSDT, typically the
2676 ----------------------------------------
2677 26 June 2013. Summary of changes for version 20130626:
2679 1) ACPICA kernel-resident subsystem:
2681 Fixed an issue with runtime repair of the _CST object. Null or invalid
2682 elements were not always removed properly. Lv Zheng.
2684 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
2685 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
2686 the maximum number of GPEs is 1016. Use of multiple GPE block devices
2687 makes the system-wide number of GPEs essentially unlimited.
2689 Example Code and Data Size: These are the sizes for the OS-independent
2690 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2691 debug version of the code includes the debug output trace mechanism and
2692 has a much larger code and data size.
2695 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2696 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2698 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2699 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2702 2) iASL Compiler/Disassembler and Tools:
2704 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
2705 hosts. Now supports Linux, FreeBSD, and Windows.
2707 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
2708 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
2710 iASL/Preprocessor: Implemented full support for nested
2711 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
2713 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
2714 max. The original purpose of this constraint was to limit the amount of
2715 debug output. However, the string function in question (UtPrintString) is
2716 now used for the disassembler also, where 256 bytes is insufficient.
2717 Reported by RehabMan@GitHub.
2719 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
2720 tables. ACPICA BZ 999. Lv Zheng.
2722 iASL: Fixed a couple of error exit issues that could result in a "Could
2723 not delete <file>" message during ASL compilation.
2725 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
2726 the actual signatures for these tables are "FACP" and "APIC",
2729 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
2730 tables are allowed to have multiple instances.
2732 ----------------------------------------
2733 17 May 2013. Summary of changes for version 20130517:
2735 1) ACPICA kernel-resident subsystem:
2737 Fixed a regression introduced in version 20130328 for _INI methods. This
2738 change fixes a problem introduced in 20130328 where _INI methods are no
2739 longer executed properly because of a memory block that was not
2740 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
2741 <tomasz.nowicki@linaro.org>.
2743 Fixed a possible problem with the new extended sleep registers in the
2745 5.0 FADT. Do not use these registers (even if populated) unless the HW-
2746 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
2749 Implemented return value repair code for _CST predefined objects: Sort
2751 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
2753 Implemented a debug-only option to disable loading of SSDTs from the
2754 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
2755 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
2756 acglobal.h - ACPICA BZ 1005. Lv Zheng.
2758 Fixed some issues in the ACPICA initialization and termination code:
2759 Tomasz Nowicki <tomasz.nowicki@linaro.org>
2760 1) Clear events initialized flag upon event component termination. ACPICA
2762 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
2763 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
2764 4) Clear debug buffer global on termination to prevent possible multiple
2765 delete. ACPICA BZ 1010.
2767 Standardized all switch() blocks across the entire source base. After
2769 years, different formatting for switch() had crept in. This change makes
2770 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
2772 Split some files to enhance ACPICA modularity and configurability:
2773 1) Split buffer dump routines into utilities/utbuffer.c
2774 2) Split internal error message routines into utilities/uterror.c
2775 3) Split table print utilities into tables/tbprint.c
2776 4) Split iASL command-line option processing into asloptions.c
2778 Makefile enhancements:
2779 1) Support for all new files above.
2780 2) Abort make on errors from any subcomponent. Chao Guan.
2781 3) Add build support for Apple Mac OS X. Liang Qi.
2783 Example Code and Data Size: These are the sizes for the OS-independent
2784 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2785 debug version of the code includes the debug output trace mechanism and
2786 has a much larger code and data size.
2789 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2790 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2792 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2793 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2796 2) iASL Compiler/Disassembler and Tools:
2798 New utility: Implemented an easily portable version of the acpidump
2799 utility to extract ACPI tables from the system (or a file) in an ASCII
2801 dump format. The top-level code implements the various command line
2802 options, file I/O, and table dump routines. To port to a new host, only
2803 three functions need to be implemented to get tables -- since this
2804 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
2805 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
2806 1) The Windows version obtains the ACPI tables from the Registry.
2807 2) The Linux version is under development.
2808 3) Other hosts - If an OS-dependent module is submitted, it will be
2809 distributed with ACPICA.
2811 iASL: Fixed a regression for -D preprocessor option (define symbol). A
2812 restructuring/change to the initialization sequence caused this option to
2813 no longer work properly.
2815 iASL: Implemented a mechanism to disable specific warnings and remarks.
2816 Adds a new command line option, "-vw <messageid> as well as "#pragma
2817 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
2819 iASL: Fix for too-strict package object validation. The package object
2820 validation for return values from the predefined names is a bit too
2821 strict, it does not allow names references within the package (which will
2822 be resolved at runtime.) These types of references cannot be validated at
2823 compile time. This change ignores named references within package objects
2824 for names that return or define static packages.
2826 Debugger: Fixed the 80-character command line limitation for the History
2827 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
2829 iASL: Added control method and package support for the -so option
2830 (generates AML offset table for BIOS support.)
2832 iASL: issue a remark if a non-serialized method creates named objects. If
2833 a thread blocks within the method for any reason, and another thread
2834 enters the method, the method will fail because an attempt will be made
2836 create the same (named) object twice. In this case, issue a remark that
2837 the method should be marked serialized. NOTE: may become a warning later.
2840 ----------------------------------------
2841 18 April 2013. Summary of changes for version 20130418:
2843 1) ACPICA kernel-resident subsystem:
2845 Fixed a possible buffer overrun during some rare but specific field unit
2846 read operations. This overrun can only happen if the DSDT version is 1 --
2847 meaning that all AML integers are 32 bits -- and the field length is
2848 between 33 and 55 bits long. During the read, an internal buffer object
2850 created for the field unit because the field is larger than an integer
2852 bits). However, in this case, the buffer will be incorrectly written
2853 beyond the end because the buffer length is less than the internal
2855 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
2856 long, but a full 8 bytes will be written.
2858 Updated the Embedded Controller "orphan" _REG method support. This refers
2859 to _REG methods under the EC device that have no corresponding operation
2860 region. This is allowed by the ACPI specification. This update removes a
2861 dependency on the existence an ECDT table. It will execute an orphan _REG
2862 method as long as the operation region handler for the EC is installed at
2863 the EC device node and not the namespace root. Rui Zhang (original
2864 update), Bob Moore (update/integrate).
2866 Implemented run-time argument typechecking for all predefined ACPI names
2867 (_STA, _BIF, etc.) This change performs object typechecking on all
2868 incoming arguments for all predefined names executed via
2869 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
2870 passing correct object types as well as the correct number of arguments
2871 (therefore identifying any issues immediately). Also, the ASL/namespace
2872 definition of the predefined name is checked against the ACPI
2873 specification for the proper argument count. Adds one new file,
2876 Changed an exception code for the ASL UnLoad() operator. Changed the
2877 exception code for the case where the input DdbHandle is invalid, from
2878 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
2880 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
2881 global makefile. The use of this flag causes compiler errors on earlier
2882 versions of GCC, so it has been removed for compatibility.
2884 Miscellaneous cleanup:
2885 1) Removed some unused/obsolete macros
2886 2) Fixed a possible memory leak in the _OSI support
2887 3) Removed an unused variable in the predefined name support
2888 4) Windows OSL: remove obsolete reference to a memory list field
2890 Example Code and Data Size: These are the sizes for the OS-independent
2891 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2892 debug version of the code includes the debug output trace mechanism and
2893 has a much larger code and data size.
2896 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2897 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2899 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2900 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2903 2) iASL Compiler/Disassembler and Tools:
2905 AcpiExec: Added installation of a handler for the SystemCMOS address
2906 space. This prevents control method abort if a method accesses this
2909 AcpiExec: Added support for multiple EC devices, and now install EC
2910 operation region handler(s) at the actual EC device instead of the
2911 namespace root. This reflects the typical behavior of host operating
2914 AcpiExec: Updated to ensure that all operation region handlers are
2915 installed before the _REG methods are executed. This prevents a _REG
2916 method from aborting if it accesses an address space has no handler.
2917 AcpiExec installs a handler for every possible address space.
2919 Debugger: Enhanced the "handlers" command to display non-root handlers.
2920 This change enhances the handlers command to display handlers associated
2921 with individual devices throughout the namespace, in addition to the
2922 currently supported display of handlers associated with the root
2926 ASL Test Suite: Several test suite errors have been identified and
2927 resolved, reducing the total error count during execution. Chao Guan.
2929 ----------------------------------------
2930 28 March 2013. Summary of changes for version 20130328:
2932 1) ACPICA kernel-resident subsystem:
2934 Fixed several possible race conditions with the internal object reference
2935 counting mechanism. Some of the external ACPICA interfaces update object
2936 reference counts without holding the interpreter or namespace lock. This
2937 change adds a spinlock to protect reference count updates on the internal
2938 ACPICA objects. Reported by and with assistance from Andriy Gapon
2941 FADT support: Removed an extraneous warning for very large GPE register
2942 sets. This change removes a size mismatch warning if the legacy length
2943 field for a GPE register set is larger than the 64-bit GAS structure can
2944 accommodate. GPE register sets can be larger than the 255-bit width
2945 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
2947 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
2948 return from this interface. Handles a possible timeout case if
2949 ACPI_WAIT_FOREVER is modified by the host to be a value less than
2950 "forever". Jung-uk Kim.
2952 Predefined name support: Add allowed/required argument type information
2954 the master predefined info table. This change adds the infrastructure to
2955 enable typechecking on incoming arguments for all predefined
2956 methods/objects. It does not actually contain the code that will fully
2957 utilize this information, this is still under development. Also condenses
2958 some duplicate code for the predefined names into a new module,
2959 utilities/utpredef.c
2961 Example Code and Data Size: These are the sizes for the OS-independent
2962 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2963 debug version of the code includes the debug output trace mechanism and
2964 has a much larger code and data size.
2967 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2968 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2970 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2971 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2974 2) iASL Compiler/Disassembler and Tools:
2976 iASL: Implemented a new option to simplify the development of ACPI-
2978 BIOS code. Adds support for a new "offset table" output file. The -so
2979 option will create a C table containing the AML table offsets of various
2980 named objects in the namespace so that BIOS code can modify them easily
2982 boot time. This can simplify BIOS runtime code by eliminating expensive
2983 searches for "magic values", enhancing boot times and adding greater
2984 reliability. With assistance from Lee Hamel.
2986 iASL: Allow additional predefined names to return zero-length packages.
2987 Now, all predefined names that are defined by the ACPI specification to
2988 return a "variable-length package of packages" are allowed to return a
2989 zero length top-level package. This allows the BIOS to tell the host that
2990 the requested feature is not supported, and supports existing BIOS/ASL
2993 iASL: Changed the "result not used" warning to an error. This is the case
2994 where an ASL operator is effectively a NOOP because the result of the
2995 operation is not stored anywhere. For example:
2997 There is no target (missing 3rd argument), nor is the function return
2998 value used. This is potentially a very serious problem -- since the code
2999 was probably intended to do something, but for whatever reason, the value
3000 was not stored. Therefore, this issue has been upgraded from a warning to
3003 AcpiHelp: Added allowable/required argument types to the predefined names
3004 info display. This feature utilizes the recent update to the predefined
3005 names table (above).
3007 ----------------------------------------
3008 14 February 2013. Summary of changes for version 20130214:
3010 1) ACPICA Kernel-resident Subsystem:
3012 Fixed a possible regression on some hosts: Reinstated the safe return
3013 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3014 evaluated only once. Although these macros are not needed for the ACPICA
3015 code itself, they are often used by ACPI-related host device drivers
3017 the safe feature may be necessary.
3019 Fixed several issues related to the ACPI 5.0 reduced hardware support
3020 (SOC): Now ensure that if the platform declares itself as hardware-
3022 via the FADT, the following functions become NOOPs (and always return
3023 AE_OK) because ACPI is always enabled by definition on these machines:
3029 Dynamic Object Repair: Implemented additional runtime repairs for
3030 predefined name return values. Both of these repairs can simplify code in
3031 the related device drivers that invoke these methods:
3032 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3033 string to a Unicode buffer.
3034 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3036 lone end tag descriptor in the following cases: A Return(0) was executed,
3037 a null buffer was returned, or no object at all was returned (non-slack
3038 mode only). Adds a new file, nsconvert.c
3039 ACPICA BZ 998. Bob Moore, Lv Zheng.
3041 Resource Manager: Added additional code to prevent possible infinite
3043 while traversing corrupted or ill-formed resource template buffers. Check
3044 for zero-length resource descriptors in all code that loops through
3045 resource templates (the length field is used to index through the
3046 template). This change also hardens the external AcpiWalkResources and
3047 AcpiWalkResourceBuffer interfaces.
3049 Local Cache Manager: Enhanced the main data structure to eliminate an
3050 unnecessary mechanism to access the next object in the list. Actually
3051 provides a small performance enhancement for hosts that use the local
3052 ACPICA cache manager. Jung-uk Kim.
3054 Example Code and Data Size: These are the sizes for the OS-independent
3055 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3056 debug version of the code includes the debug output trace mechanism and
3057 has a much larger code and data size.
3060 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3061 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3063 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3064 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3067 2) iASL Compiler/Disassembler and Tools:
3069 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3070 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3071 that were made to the ACPI 5.0 specification.
3073 iASL/Disassembler: Added full support for the following new ACPI tables:
3074 1) The MTMR table (MID Timer Table)
3075 2) The VRTC table (Virtual Real Time Clock Table).
3076 Includes header file, disassembler, table compiler, and template support
3079 iASL: Implemented compile-time validation of package objects returned by
3080 predefined names. This new feature validates static package objects
3081 returned by the various predefined names defined to return packages. Both
3082 object types and package lengths are validated, for both parent packages
3083 and sub-packages, if any. The code is similar in structure and behavior
3085 the runtime repair mechanism within the AML interpreter and uses the
3086 existing predefined name information table. Adds a new file, aslprepkg.c.
3089 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3090 This feature detects a binary file with a valid ACPI table header and
3091 invokes the disassembler automatically. Eliminates the need to
3092 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3094 iASL/Disassembler: Added several warnings for the case where there are
3095 unresolved control methods during the disassembly. This can potentially
3096 cause errors when the output file is compiled, because the disassembler
3097 assumes zero method arguments in these cases (it cannot determine the
3098 actual number of arguments without resolution/definition of the method).
3100 Debugger: Added support to display all resources with a single command.
3101 Invocation of the resources command with no arguments will now display
3103 resources within the current namespace.
3105 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3108 ----------------------------------------
3109 17 January 2013. Summary of changes for version 20130117:
3111 1) ACPICA Kernel-resident Subsystem:
3113 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3114 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3115 objects to return a package containing one integer, most BIOS code
3117 two integers and the previous code reflects that. However, we also need
3119 support BIOS code that actually implements to the ACPI spec, and this
3120 change reflects this.
3122 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3123 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3124 C compilers that require this support.
3125 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3126 ACPI_DEBUG is already used by many of the various hosts.
3128 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3129 copyright to all module headers and signons, including the standard Linux
3130 header. This affects virtually every file in the ACPICA core subsystem,
3131 iASL compiler, all ACPICA utilities, and the test suites.
3133 Example Code and Data Size: These are the sizes for the OS-independent
3134 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3135 debug version of the code includes the debug output trace mechanism and
3136 has a much larger code and data size.
3139 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3140 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3142 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3143 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3146 2) iASL Compiler/Disassembler and Tools:
3148 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3149 prevent a possible fault on some hosts. Some C libraries modify the arg
3150 pointer parameter to vfprintf making it difficult to call it twice in the
3151 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
3152 does not affect the Windows OSL since the Win C library does not modify
3153 the arg pointer. Chao Guan, Bob Moore.
3155 iASL: Fixed a possible infinite loop when the maximum error count is
3156 reached. If an output file other than the .AML file is specified (such as
3157 a listing file), and the maximum number of errors is reached, do not
3158 attempt to flush data to the output file(s) as the compiler is aborting.
3159 This can cause an infinite loop as the max error count code essentially
3160 keeps calling itself.
3162 iASL/Disassembler: Added an option (-in) to ignore NOOP
3164 Implemented for both the compiler and the disassembler. Often, the NOOP
3165 opcode is used as padding for packages that are changed dynamically by
3167 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
3168 errors. This option causes the disassembler to ignore all NOOP opcodes
3169 (0xA3), and it also causes the compiler to ignore all ASL source code
3173 Debugger: Enhanced the Sleep command to execute all sleep states. This
3174 change allows Sleep to be invoked with no arguments and causes the
3175 debugger to execute all of the sleep states, 0-5, automatically.
3177 ----------------------------------------
3178 20 December 2012. Summary of changes for version 20121220:
3180 1) ACPICA Kernel-resident Subsystem:
3182 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
3183 alternate entry point for AcpiWalkResources and improves the usability of
3184 the resource manager by accepting as input a buffer containing the output
3185 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
3186 input buffer is not deleted by this interface so that it can be used by
3187 the host later. See the ACPICA reference for details.
3189 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
3190 (DSDT version < 2). The constant will be truncated and this warning
3191 reflects that behavior.
3193 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
3194 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
3195 both get and set the new wake bit in these descriptors, separately from
3196 the existing share bit. Reported by Aaron Lu.
3198 Interpreter: Fix Store() when an implicit conversion is not possible. For
3199 example, in the cases such as a store of a string to an existing package
3200 object, implement the store as a CopyObject(). This is a small departure
3201 from the ACPI specification which states that the control method should
3203 aborted in this case. However, the ASLTS suite depends on this behavior.
3205 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
3206 macros: check if debug output is currently enabled as soon as possible to
3207 minimize performance impact if debug is in fact not enabled.
3209 Source code restructuring: Cleanup to improve modularity. The following
3210 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
3211 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
3212 Associated makefiles and project files have been updated.
3214 Changed an exception code for LoadTable operator. For the case where one
3215 of the input strings is too long, change the returned exception code from
3216 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
3218 Fixed a possible memory leak in dispatcher error path. On error, delete
3219 the mutex object created during method mutex creation. Reported by
3220 tim.gardner@canonical.com.
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: 94.3K Code, 25.3K Data, 119.6K Total
3229 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3231 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3232 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3235 2) iASL Compiler/Disassembler and Tools:
3237 iASL: Disallow a method call as argument to the ObjectType ASL operator.
3238 This change tracks an errata to the ACPI 5.0 document. The AML grammar
3239 will not allow the interpreter to differentiate between a method and a
3240 method invocation when these are used as an argument to the ObjectType
3241 operator. The ACPI specification change is to disallow a method
3243 (UserTerm) for the ObjectType operator.
3245 Finish support for the TPM2 and CSRT tables in the headers, table
3246 compiler, and disassembler.
3248 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
3249 always expires immediately if the semaphore is not available. The
3251 code was using a relative-time timeout, but sem_timedwait requires the
3253 of an absolute time.
3255 iASL: Added a remark if the Timer() operator is used within a 32-bit
3256 table. This operator returns a 64-bit time value that will be truncated
3257 within a 32-bit table.
3259 iASL Source code restructuring: Cleanup to improve modularity. The
3260 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
3261 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
3265 ----------------------------------------
3266 14 November 2012. Summary of changes for version 20121114:
3268 1) ACPICA Kernel-resident Subsystem:
3270 Implemented a performance enhancement for ACPI/AML Package objects. This
3271 change greatly increases the performance of Package objects within the
3272 interpreter. It changes the processing of reference counts for packages
3274 optimizing for the most common case where the package sub-objects are
3275 either Integers, Strings, or Buffers. Increases the overall performance
3277 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
3279 Chao Guan. ACPICA BZ 943.
3281 Implemented and deployed common macros to extract flag bits from resource
3282 descriptors. Improves readability and maintainability of the code. Fixes
3284 problem with the UART serial bus descriptor for the number of data bits
3285 flags (was incorrectly 2 bits, should be 3).
3287 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
3288 of the macros and changed the SETx macros to the style of (destination,
3289 source). Also added ACPI_CASTx companion macros. Lv Zheng.
3291 Example Code and Data Size: These are the sizes for the OS-independent
3292 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3293 debug version of the code includes the debug output trace mechanism and
3294 has a much larger code and data size.
3297 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3298 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3300 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3301 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3304 2) iASL Compiler/Disassembler and Tools:
3306 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
3307 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
3308 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
3310 Disassembler: Fixed a problem with external declaration generation. Fixes
3311 a problem where an incorrect pathname could be generated for an external
3312 declaration if the original reference to the object includes leading
3313 carats (^). ACPICA BZ 984.
3315 Debugger: Completed a major update for the Disassemble<method> command.
3316 This command was out-of-date and did not properly disassemble control
3317 methods that had any reasonable complexity. This fix brings the command
3319 to the same level as the rest of the disassembler. Adds one new file,
3320 dmdeferred.c, which is existing code that is now common with the main
3321 disassembler and the debugger disassemble command. ACPICA MZ 978.
3323 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
3324 Newer versions of Bison emit this prototype, so moved the prototype out
3326 the iASL header to where it is actually used in order to avoid a
3330 iASL/Tools: Standardized use of the stream I/O functions:
3331 1) Ensure check for I/O error after every fopen/fread/fwrite
3332 2) Ensure proper order of size/count arguments for fread/fwrite
3333 3) Use test of (Actual != Requested) after all fwrite, and most fread
3334 4) Standardize I/O error messages
3335 Improves reliability and maintainability of the code. Bob Moore, Lv
3339 Disassembler: Prevent duplicate External() statements. During generation
3340 of external statements, detect similar pathnames that are actually
3341 duplicates such as these:
3344 Remove all leading '\' characters from pathnames during the external
3345 statement generation so that duplicates will be detected and tossed.
3348 Tools: Replace low-level I/O with stream I/O functions. Replace
3349 open/read/write/close with the stream I/O equivalents
3350 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
3353 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
3354 name header so that AcpiXtract recognizes the output file/table.
3356 iASL: Remove obsolete -2 option flag. Originally intended to force the
3357 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
3358 and the entire concept is now obsolete.
3360 ----------------------------------------
3361 18 October 2012. Summary of changes for version 20121018:
3364 1) ACPICA Kernel-resident Subsystem:
3366 Updated support for the ACPI 5.0 MPST table. Fixes some problems
3367 introduced by late changes to the table as it was added to the ACPI 5.0
3368 specification. Includes header, disassembler, and data table compiler
3369 support as well as a new version of the MPST template.
3371 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
3372 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
3373 methods: _HID, _CID, and _UID.
3375 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
3376 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
3377 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
3378 names for their various drivers. Affects the AcpiGetObjectInfo external
3379 interface, and other internal interfaces as well.
3381 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
3382 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
3383 on machines that support non-aligned transfers. Optimizes for this case
3384 rather than using a strncpy. With assistance from Zheng Lv.
3386 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
3387 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
3389 Added a new debug print message for AML mutex objects that are force-
3390 released. At control method termination, any currently acquired mutex
3391 objects are force-released. Adds a new debug-only message for each one
3394 Audited/updated all ACPICA return macros and the function debug depth
3395 counter: 1) Ensure that all functions that use the various TRACE macros
3396 also use the appropriate ACPICA return macros. 2) Ensure that all normal
3397 return statements surround the return expression (value) with parens to
3398 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
3399 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
3401 Global source code changes/maintenance: All extra lines at the start and
3402 end of each source file have been removed for consistency. Also, within
3403 comments, all new sentences start with a single space instead of a double
3404 space, again for consistency across the code base.
3406 Example Code and Data Size: These are the sizes for the OS-independent
3407 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3408 debug version of the code includes the debug output trace mechanism and
3409 has a much larger code and data size.
3412 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3413 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3415 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3416 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3419 2) iASL Compiler/Disassembler and Tools:
3421 AcpiExec: Improved the algorithm used for memory leak/corruption
3422 detection. Added some intelligence to the code that maintains the global
3423 list of allocated memory. The list is now ordered by allocated memory
3424 address, significantly improving performance. When running AcpiExec on
3425 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
3426 on the platform and/or the environment. Note, this performance
3427 enhancement affects the AcpiExec utility only, not the kernel-resident
3430 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
3431 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
3432 incorrect table offset reported for invalid opcodes. Report the original
3433 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
3435 Disassembler: Enhanced the -vt option to emit the binary table data in
3436 hex format to assist with debugging.
3438 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
3439 size of file structure. Colin Ian King.
3441 ----------------------------------------
3442 13 September 2012. Summary of changes for version 20120913:
3445 1) ACPICA Kernel-resident Subsystem:
3447 ACPI 5.0: Added two new notify types for the Hardware Error Notification
3448 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
3452 Table Manager: Merged/removed duplicate code in the root table resize
3453 functions. One function is external, the other is internal. Lv Zheng,
3457 Makefiles: Completely removed the obsolete "Linux" makefiles under
3458 acpica/generate/linux. These makefiles are obsolete and have been
3461 the generic unix makefiles under acpica/generate/unix.
3463 Makefiles: Ensure that binary files always copied properly. Minor rule
3465 to ensure that the final binary output files are always copied up to the
3466 appropriate binary directory (bin32 or bin64.)
3468 Example Code and Data Size: These are the sizes for the OS-independent
3469 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3471 version of the code includes the debug output trace mechanism and has a
3473 larger code and data size.
3476 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3477 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3479 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3480 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3483 2) iASL Compiler/Disassembler and Tools:
3485 Disassembler: Fixed a possible fault during the disassembly of resource
3486 descriptors when a second parse is required because of the invocation of
3487 external control methods within the table. With assistance from
3488 adq@lidskialf.net. ACPICA BZ 976.
3490 iASL: Fixed a namepath optimization problem. An error can occur if the
3492 node that contains the namepath to be optimized does not have a parent
3494 that is a named object. This change fixes the problem.
3496 iASL: Fixed a regression where the AML file is not deleted on errors. The
3498 output file should be deleted if there are any errors during the
3501 only exception is if the -f (force output) option is used. ACPICA BZ 974.
3503 iASL: Added a feature to automatically increase internal line buffer
3505 Via realloc(), automatically increase the internal line buffer sizes as
3506 necessary to support very long source code lines. The current version of
3508 preprocessor requires a buffer long enough to contain full source code
3510 This change increases the line buffer(s) if the input lines go beyond the
3511 current buffer size. This eliminates errors that occurred when a source
3513 line was longer than the buffer.
3515 iASL: Fixed a problem with constant folding in method declarations. The
3516 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
3518 Type3 opcode was used.
3520 Debugger: Improved command help support. For incorrect argument count,
3522 full help for the command. For help command itself, allow an argument to
3525 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
3526 errors during execution of the suite. Guan Chao.
3528 ----------------------------------------
3529 16 August 2012. Summary of changes for version 20120816:
3532 1) ACPICA Kernel-resident Subsystem:
3534 Removed all use of the deprecated _GTS and _BFS predefined methods. The
3536 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
3537 deprecated and will probably be removed from the ACPI specification.
3539 does not invoke them, and reportedly never will. The final nail in the
3541 is that the ACPI specification states that these methods must be run with
3542 interrupts off, which is not going to happen in a kernel interpreter.
3544 Linux has removed all use of the methods also. It was discovered that
3545 invoking these functions caused failures on some machines, probably
3547 they were never tested since Windows does not call them. Affects two
3549 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
3552 Implemented support for complex bit-packed buffers returned from the _PLD
3553 (Physical Location of Device) predefined method. Adds a new external
3554 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
3556 structure. Note: C Bitfields cannot be used for this type of predefined
3557 structure since the memory layout of individual bitfields is not defined
3559 the C language. In addition, there are endian concerns where a compiler
3561 change the bitfield ordering based on the machine type. The new ACPICA
3562 interface eliminates these issues, and should be called after _PLD is
3563 executed. ACPICA BZ 954.
3565 Implemented a change to allow a scope change to root (via "Scope (\)")
3567 execution of module-level ASL code (code that is executed at table load
3570 Added the Windows8/Server2012 string for the _OSI method. This change
3573 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
3576 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
3578 and CSRT (Core System Resource Table).
3580 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
3581 names. This simplifies access to the buffers returned by these predefined
3582 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
3584 GPE support: Removed an extraneous parameter from the various low-level
3585 internal GPE functions. Tang Feng.
3587 Removed the linux makefiles from the unix packages. The generate/linux
3588 makefiles are obsolete and have been removed from the unix tarball
3590 packages. The replacement makefiles are under generate/unix, and there is
3592 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
3594 Updates for Unix makefiles:
3595 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
3596 2) Update linker flags (move to end of command line) for AcpiExec
3600 Split ACPICA initialization functions to new file, utxfinit.c. Split from
3601 utxface.c to improve modularity and reduce file size.
3603 Example Code and Data Size: These are the sizes for the OS-independent
3604 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3605 debug version of the code includes the debug output trace mechanism and
3607 much larger code and data size.
3610 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3611 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3613 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3614 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3617 2) iASL Compiler/Disassembler and Tools:
3619 iASL: Fixed a problem with constant folding for fixed-length constant
3620 expressions. The constant-folding code was not being invoked for constant
3621 expressions that allow the use of type 3/4/5 opcodes to generate
3623 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
3625 in the generation of invalid AML bytecode. ACPICA BZ 970.
3627 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
3628 apparently automatically emit some of the necessary externals. This
3630 handles these versions in order to eliminate generation warnings.
3632 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
3634 Disassembler: Add support to decode _PLD buffers. The decoded buffer
3636 within comments in the output file.
3638 Debugger: Fixed a regression with the "Threads" command where
3639 AE_BAD_PARAMETER was always returned.
3641 ----------------------------------------
3642 11 July 2012. Summary of changes for version 20120711:
3644 1) ACPICA Kernel-resident Subsystem:
3646 Fixed a possible fault in the return package object repair code. Fixes a
3647 problem that can occur when a lone package object is wrapped with an
3649 package object in order to force conformance to the ACPI specification.
3651 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
3655 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
3656 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
3657 ARB_DIS bit must be implemented in the host-dependent C3 processor power
3659 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
3661 Intel and other vendors. (for Intel: ICH4-M and earlier)
3663 This change removes the code to disable/enable bus master arbitration
3665 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
3667 resume problems on some machines. The change has been in use for over
3671 Implemented two new external interfaces to support host-directed dynamic
3673 table load and unload. They are intended to simplify the host
3675 of hot-plug support:
3676 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
3677 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
3679 See the ACPICA reference for additional details. Adds one new file,
3680 components/tables/tbxfload.c
3682 Implemented and deployed two new interfaces for errors and warnings that
3684 known to be caused by BIOS/firmware issues:
3685 AcpiBiosError: Prints "ACPI Firmware Error" message.
3686 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
3687 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
3689 and FADT errors. Additional deployment to be completed as appropriate in
3691 future. The associated conditional macros are ACPI_BIOS_ERROR and
3692 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
3697 Implicit notify support: ensure that no memory allocation occurs within a
3698 critical region. This fix moves a memory allocation outside of the time
3700 spinlock is held. Fixes issues on systems that do not allow this
3704 Split exception code utilities and tables into a new file,
3707 Example Code and Data Size: These are the sizes for the OS-independent
3708 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3710 version of the code includes the debug output trace mechanism and has a
3712 larger code and data size.
3715 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3716 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3718 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3719 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3722 2) iASL Compiler/Disassembler and Tools:
3724 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
3728 Debugger: Enhanced the "tables" command to emit additional information
3730 the current set of ACPI tables, including the owner ID and flags decode.
3732 Debugger: Reimplemented the "unload" command to use the new
3733 AcpiUnloadParentTable external interface. This command was disable
3735 due to need for an unload interface.
3737 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
3739 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
3741 ----------------------------------------
3742 20 June 2012. Summary of changes for version 20120620:
3745 1) ACPICA Kernel-resident Subsystem:
3747 Implemented support to expand the "implicit notify" feature to allow
3749 devices to be notified by a single GPE. This feature automatically
3751 runtime device notification in the absence of a BIOS-provided GPE control
3752 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
3754 provided by ACPICA for Windows compatibility, and is a workaround for
3757 code errors. See the description of the AcpiSetupGpeForWake interface in
3759 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
3761 Changed some comments and internal function names to simplify and ensure
3762 correctness of the Linux code translation. No functional changes.
3764 Example Code and Data Size: These are the sizes for the OS-independent
3765 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3767 version of the code includes the debug output trace mechanism and has a
3769 larger code and data size.
3772 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3773 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3775 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3776 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3779 2) iASL Compiler/Disassembler and Tools:
3781 Disassembler: Added support to emit short, commented descriptions for the
3783 predefined names in order to improve the readability of the disassembled
3784 output. ACPICA BZ 959. Changes include:
3785 1) Emit descriptions for all standard predefined names (_INI, _STA,
3788 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
3789 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
3792 AcpiSrc: Fixed several long-standing Linux code translation issues.
3794 descriptions in function headers are now translated properly to lower
3797 underscores. ACPICA BZ 961. Also fixes translation problems such as
3803 local_fADT -> local_FADT
3804 execute_oSI -> execute_OSI
3806 iASL: Fixed a problem where null bytes were inadvertently emitted into
3810 iASL: Added the existing debug options to the standard help screen. There
3812 no longer two different help screens. ACPICA BZ 957.
3814 AcpiHelp: Fixed some typos in the various predefined name descriptions.
3816 expand some of the descriptions where appropriate.
3818 iASL: Fixed the -ot option (display compile times/statistics). Was not
3820 properly for standard output; only worked for the debug file case.
3822 ----------------------------------------
3823 18 May 2012. Summary of changes for version 20120518:
3826 1) ACPICA Core Subsystem:
3828 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
3830 to block until asynchronous events such as notifies and GPEs have
3832 Within ACPICA, it is only called before a notify or GPE handler is
3833 removed/uninstalled. It also may be useful for the host OS within related
3834 drivers such as the Embedded Controller driver. See the ACPICA reference
3836 additional information. ACPICA BZ 868.
3838 ACPI Tables: Added a new error message for a possible overflow failure
3840 the conversion of FADT 32-bit legacy register addresses to internal
3843 bit GAS structure representation. The GAS has a one-byte "bit length"
3845 thus limiting the register length to 255 bits. ACPICA BZ 953.
3847 Example Code and Data Size: These are the sizes for the OS-independent
3848 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3850 version of the code includes the debug output trace mechanism and has a
3852 larger code and data size.
3855 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3856 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3858 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3859 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3862 2) iASL Compiler/Disassembler and Tools:
3864 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
3866 This keyword was added late in the ACPI 5.0 release cycle and was not
3867 implemented until now.
3869 Disassembler: Added support for Operation Region externals. Adds missing
3870 support for operation regions that are defined in another table, and
3871 referenced locally via a Field or BankField ASL operator. Now generates
3873 correct External statement.
3875 Disassembler: Several additional fixes for the External() statement
3877 related to some ASL operators. Also, order the External() statements
3878 alphabetically in the disassembler output. Fixes the External()
3881 the Create* field, Alias, and Scope operators:
3882 1) Create* buffer field operators - fix type mismatch warning on
3884 2) Alias - implement missing External support
3885 3) Scope - fix to make sure all necessary externals are emitted.
3887 iASL: Improved pathname support. For include files, merge the prefix
3889 with the file pathname and eliminate unnecessary components. Convert
3890 backslashes in all pathnames to forward slashes, for readability. Include
3892 pathname changes affect both #include and Include() type operators.
3894 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
3896 of a valid line by inserting a newline and then returning the EOF during
3898 next call to GetNextLine. Prevents the line from being ignored due to EOF
3901 iASL: Implemented some changes to enhance the IDE support (-vi option.)
3903 and Warning messages are now correctly recognized for both the source
3905 browser and the global error and warning counts.
3907 ----------------------------------------
3908 20 April 2012. Summary of changes for version 20120420:
3911 1) ACPICA Core Subsystem:
3913 Implemented support for multiple notify handlers. This change adds
3916 allow multiple system and device notify handlers on Device, Thermal Zone,
3918 Processor objects. This can simplify the host OS notification
3920 Also re-worked and restructured the entire notify support code to
3922 handler installation, handler removal, notify event queuing, and notify
3923 dispatch to handler(s). Note: there can still only be two global notify
3924 handlers - one for system notifies and one for device notifies. There are
3926 changes to the existing handler install/remove interfaces. Lin Ming, Bob
3927 Moore, Rafael Wysocki.
3929 Fixed a regression in the package repair code where the object reference
3930 count was calculated incorrectly. Regression was introduced in the commit
3931 "Support to add Package wrappers".
3933 Fixed a couple possible memory leaks in the AML parser, in the error
3935 path. Jesper Juhl, Lin Ming.
3937 Example Code and Data Size: These are the sizes for the OS-independent
3938 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3939 debug version of the code includes the debug output trace mechanism and
3941 much larger code and data size.
3944 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3945 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3947 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3948 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3951 2) iASL Compiler/Disassembler and Tools:
3953 iASL: Fixed a problem with the resource descriptor support where the
3955 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
3956 included in cumulative descriptor offset, resulting in incorrect values
3958 resource tags within resource descriptors appearing after a
3960 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
3962 iASL and Preprocessor: Implemented full support for the #line directive
3964 correctly track original source file line numbers through the .i
3966 output file - for error and warning messages.
3968 iASL: Expand the allowable byte constants for address space IDs.
3970 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
3971 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
3973 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
3975 iASL: Add option to completely disable the preprocessor (-Pn).
3977 iASL: Now emit all error/warning messages to standard error (stderr) by
3978 default (instead of the previous stdout).
3980 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
3982 for resource descriptor offset fix above. Update/cleanup error output
3983 routines. Enable and send iASL errors/warnings to an error logfile
3984 (error.txt). Send all other iASL output to a logfile (compiler.txt).
3986 several extraneous "unrecognized operator" messages.
3988 ----------------------------------------
3989 20 March 2012. Summary of changes for version 20120320:
3992 1) ACPICA Core Subsystem:
3994 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
3995 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
3997 does not execute these methods, and therefore these methods are often
3998 untested. It has been seen on some systems where the execution of these
3999 methods causes errors and also prevents the machine from entering S5. It
4001 therefore suggested that host operating systems do not execute these
4003 by default. In the future, perhaps these methods can be optionally
4005 based on the age of the system and/or what is the newest version of
4007 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4009 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4012 Fixed a problem where the length of the local/common FADT was set too
4014 The local FADT table length cannot be set to the common length until the
4015 original length has been examined. There is code that checks the table
4017 and sets various fields appropriately. This can affect older machines
4019 early FADT versions. For example, this can cause inadvertent writes to
4021 CST_CNT register. Julian Anastasov.
4023 Fixed a mapping issue related to a physical table override. Use the
4025 mapping mechanism for tables loaded via the physical override OSL
4027 This allows for early mapping before the virtual memory manager is
4029 Thomas Renninger, Bob Moore.
4031 Enhanced the automatic return-object repair code: Repair a common problem
4033 predefined methods that are defined to return a variable-length Package
4035 sub-objects. If there is only one sub-object, some BIOS ASL code
4037 simply returns the single object instead of a Package with one sub-
4039 This new support will repair this error by wrapping a Package object
4041 the original object, creating the correct and expected Package with one
4043 object. Names that can be repaired in this manner include: _ALR, _CSD,
4045 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4048 Changed the exception code returned for invalid ACPI paths passed as
4049 parameters to external interfaces such as AcpiEvaluateObject. Was
4050 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
4052 Example Code and Data Size: These are the sizes for the OS-independent
4053 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4055 version of the code includes the debug output trace mechanism and has a
4057 larger code and data size.
4060 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4061 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4063 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4064 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4067 2) iASL Compiler/Disassembler and Tools:
4069 iASL: Added the infrastructure and initial implementation of a integrated
4071 like preprocessor. This will simplify BIOS development process by
4073 the need for a separate preprocessing step during builds. On Windows, it
4075 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4076 features including full #define() macro support are still under
4078 These preprocessor directives are supported:
4091 In addition, these new command line options are supported:
4092 -D <symbol> Define symbol for preprocessor use
4093 -li Create preprocessed output file (*.i)
4094 -P Preprocess only and create preprocessor output file (*.i)
4096 Table Compiler: Fixed a problem where the equals operator within an
4098 did not work properly.
4100 Updated iASL to use the current versions of Bison/Flex. Updated the
4102 project file to invoke these tools from the standard location. ACPICA BZ
4105 Flex for Windows: V2.5.4
4106 Bison for Windows: V2.4.1
4108 ----------------------------------------
4109 15 February 2012. Summary of changes for version 20120215:
4112 1) ACPICA Core Subsystem:
4114 There have been some major changes to the sleep/wake support code, as
4115 described below (a - e).
4117 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4118 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4119 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4121 time the _BFS method is called and the _WAK method is called. NOTE: all
4123 must update their wake/resume code or else sleep/wake will not work
4127 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4129 method. Some machines require that the GPEs are enabled before the _WAK
4131 is executed. Thomas Renninger.
4133 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4135 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4137 determine whether the system is rebooting or resuming. Matthew Garrett.
4139 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4141 match the ACPI specification requirement. Rafael Wysocki.
4143 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4144 registers within the V5 FADT. This support adds two new files:
4145 hardware/hwesleep.c implements the support for the new registers. Moved
4147 sleep/wake external interfaces to hardware/hwxfsleep.c.
4150 Added a new OSL interface for ACPI table overrides,
4151 AcpiOsPhysicalTableOverride. This interface allows the host to override a
4152 table via a physical address, instead of the logical address required by
4153 AcpiOsTableOverride. This simplifies the host implementation. Initial
4154 implementation by Thomas Renninger. The ACPICA implementation creates a
4156 shared function for table overrides that attempts both a logical and a
4159 Expanded the OSL memory read/write interfaces to 64-bit data
4160 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
4161 transfer support for GAS register structures passed to AcpiRead and
4164 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
4166 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
4168 See the ACPICA reference for details. ACPICA BZ 942. This option removes
4170 10% of the code and 5% of the static data, and the following hardware
4172 features become unavailable:
4173 PM Event and Control registers
4174 SCI interrupt (and handler)
4176 General Purpose Events (GPEs)
4179 FACS table (Waking vectors and Global Lock)
4181 Updated the unix tarball directory structure to match the ACPICA git
4183 tree. This ensures that the generic unix makefiles work properly (in
4184 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
4187 Updated the return value of the _REV predefined method to integer value 5
4189 reflect ACPI 5.0 support.
4191 Moved the external ACPI PM timer interface prototypes to the public
4193 file where they belong.
4195 Example Code and Data Size: These are the sizes for the OS-independent
4196 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4198 version of the code includes the debug output trace mechanism and has a
4200 larger code and data size.
4203 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4204 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4206 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4207 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4210 2) iASL Compiler/Disassembler and Tools:
4212 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
4213 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
4214 incorrectly displayed.
4216 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
4219 ----------------------------------------
4220 11 January 2012. Summary of changes for version 20120111:
4223 1) ACPICA Core Subsystem:
4225 Implemented a new mechanism to allow host device drivers to check for
4227 range conflicts with ACPI Operation Regions. Both SystemMemory and
4229 address spaces are supported. A new external interface,
4230 AcpiCheckAddressRange,
4231 allows drivers to check an address range against the ACPI namespace. See
4233 ACPICA reference for additional details. Adds one new file,
4234 utilities/utaddress.c. Lin Ming, Bob Moore.
4236 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
4239 Status registers, update the ACPI 5.0 flags, and update internal data
4240 structures to handle an FADT larger than 256 bytes. The size of the ACPI
4244 Updated all ACPICA copyrights and signons to 2012. Added the 2012
4246 all module headers and signons, including the standard Linux header. This
4247 affects virtually every file in the ACPICA core subsystem, iASL compiler,
4249 all ACPICA utilities.
4251 Example Code and Data Size: These are the sizes for the OS-independent
4252 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4254 version of the code includes the debug output trace mechanism and has a
4256 larger code and data size.
4259 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4260 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4262 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4263 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4266 2) iASL Compiler/Disassembler and Tools:
4268 Disassembler: fixed a problem with the automatic resource tag generation
4269 support. Fixes a problem where the resource tags are inadvertently not
4270 constructed if the table being disassembled contains external references
4272 control methods. Moved the actual construction of the tags to after the
4274 namespace is constructed (after 2nd parse is invoked due to external
4276 method references.) ACPICA BZ 941.
4278 Table Compiler: Make all "generic" operators caseless. These are the
4280 like UINT8, String, etc. Making these caseless improves ease-of-use.
4284 ----------------------------------------
4285 23 November 2011. Summary of changes for version 20111123:
4287 0) ACPI 5.0 Support:
4289 This release contains full support for the ACPI 5.0 specification, as
4292 Reduced Hardware Support:
4293 -------------------------
4295 This support allows for ACPI systems without the usual ACPI hardware.
4297 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
4299 not attempt to initialize or use any of the usual ACPI hardware. Note,
4301 this flag is set, all of the following ACPI hardware is assumed to be not
4302 present and is not initialized or accessed:
4304 General Purpose Events (GPEs)
4305 Fixed Events (PM1a/PM1b and PM Control)
4306 Power Management Timer and Console Buttons (power/sleep)
4307 Real-time Clock Alarm
4309 System Control Interrupt (SCI)
4310 The FACS is assumed to be non-existent
4315 All new tables and updates to existing tables are fully supported in the
4316 ACPICA headers (for use by device drivers), the disassembler, and the
4318 Data Table Compiler. ACPI 5.0 defines these new tables:
4320 BGRT /* Boot Graphics Resource Table */
4321 DRTM /* Dynamic Root of Trust for Measurement table */
4322 FPDT /* Firmware Performance Data Table */
4323 GTDT /* Generic Timer Description Table */
4324 MPST /* Memory Power State Table */
4325 PCCT /* Platform Communications Channel Table */
4326 PMTT /* Platform Memory Topology Table */
4327 RASF /* RAS Feature table */
4329 Operation Regions/SpaceIDs:
4330 ---------------------------
4332 All new operation regions are fully supported by the iASL compiler, the
4333 disassembler, and the ACPICA runtime code (for dispatch to region
4335 The new operation region Space IDs are:
4340 Resource Descriptors:
4341 ---------------------
4343 All new ASL resource descriptors are fully supported by the iASL
4346 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
4348 all new predefined resource tags). New descriptors are:
4357 ASL/AML Operators, New and Modified:
4358 ------------------------------------
4360 One new operator is added, the Connection operator, which is used to
4362 a GeneralPurposeIo or GenericSerialBus resource descriptor with
4364 field objects within an operation region. Several new protocols are
4366 with the AccessAs operator. All are fully supported by the iASL compiler,
4367 disassembler, and runtime ACPICA AML interpreter:
4369 Connection // Declare Field Connection
4371 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
4372 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
4374 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
4375 RawDataBuffer // Data type for Vendor Data
4378 Predefined ASL/AML Objects:
4379 ---------------------------
4381 All new predefined objects/control-methods are supported by the iASL
4383 and the ACPICA runtime validation/repair (arguments and return values.)
4385 predefined names include the following:
4387 Standard Predefined Names (Objects or Control Methods):
4388 _AEI, _CLS, _CPC, _CWS, _DEP,
4389 _DLM, _EVT, _GCP, _CRT, _GWS,
4390 _HRV, _PRE, _PSE, _SRT, _SUB.
4392 Resource Tags (Names used to access individual fields within resource
4394 _DBT, _DPL, _DRS, _END, _FLC,
4395 _IOR, _LIN, _MOD, _PAR, _PHA,
4396 _PIN, _PPI, _POL, _RXL, _SLV,
4397 _SPE, _STB, _TXL, _VEN.
4399 ACPICA External Interfaces:
4400 ---------------------------
4402 Several new interfaces have been defined for use by ACPI-related device
4403 drivers and other host OS services:
4405 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
4407 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
4408 provided by the BIOS. They are intended to be used in conjunction with
4410 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
4411 mutual exclusion with the AML code/interpreter.
4413 AcpiGetEventResources: Returns the (formatted) resource descriptors as
4415 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
4417 resource descriptors associated with hardware-reduced platform events,
4419 to the AcpiGetCurrentResources interface.
4421 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
4422 operation regions, information about the Connection() object and any
4424 length information is passed to the region handler within the Context
4427 AcpiBufferToResource: This interface converts a raw AML buffer containing
4429 resource template or resource descriptor to the ACPI_RESOURCE internal
4431 suitable for use by device drivers. Can be used by an operation region
4433 to convert the Connection() buffer object into a ACPI_RESOURCE.
4435 Miscellaneous/Tools/TestSuites:
4436 -------------------------------
4438 Support for extended _HID names (Four alpha characters instead of three).
4439 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
4440 Support for ACPI 5.0 features in the ASLTS test suite.
4441 Fully updated documentation (ACPICA and iASL reference documents.)
4443 ACPI Table Definition Language:
4444 -------------------------------
4446 Support for this language was implemented and released as a subsystem of
4448 iASL compiler in 2010. (See the iASL compiler User Guide.)
4451 Non-ACPI 5.0 changes for this release:
4452 --------------------------------------
4454 1) ACPICA Core Subsystem:
4456 Fix a problem with operation region declarations where a failure can
4459 the region name and an argument that evaluates to an object (such as the
4460 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
4463 Do not abort an ACPI table load if an invalid space ID is found within.
4465 will be caught later if the offending method is executed. ACPICA BZ 925.
4467 Fixed an issue with the FFixedHW space ID where the ID was not always
4468 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
4470 Fixed a problem with the 32-bit generation of the unix-specific OSL
4471 (osunixxf.c). Lin Ming, ACPICA BZ 936.
4473 Several changes made to enable generation with the GCC 4.6 compiler.
4477 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
4479 field registers out-of-range.
4481 2) iASL Compiler/Disassembler and Tools:
4483 iASL: Implemented the __PATH__ operator, which returns the full pathname
4485 the current source file.
4487 AcpiHelp: Automatically display expanded keyword information for all ASL
4490 Debugger: Add "Template" command to disassemble/dump resource template
4493 Added a new master script to generate and execute the ASLTS test suite.
4494 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
4496 iASL: Fix problem with listing generation during processing of the
4498 operator where AML listing was disabled until the entire Switch block was
4501 iASL: Improve support for semicolon statement terminators. Fix "invalid
4502 character" message for some cases when the semicolon is used. Semicolons
4504 now allowed after every <Term> grammar element. ACPICA BZ 927.
4506 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
4509 Disassembler: Fix problem with disassembly of the DataTableRegion
4511 where an inadvertent "Unhandled deferred opcode" message could be
4514 3) Example Code and Data Size
4516 These are the sizes for the OS-independent acpica.lib produced by the
4517 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4518 includes the debug output trace mechanism and has a much larger code and
4523 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4524 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4526 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4527 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4529 ----------------------------------------
4530 22 September 2011. Summary of changes for version 20110922:
4534 Support for ACPI 5.0 in ACPICA has been underway for several months and
4536 be released at the same time that ACPI 5.0 is officially released.
4538 The ACPI 5.0 specification is on track for release in the next few
4541 1) ACPICA Core Subsystem:
4543 Fixed a problem where the maximum sleep time for the Sleep() operator was
4544 intended to be limited to two seconds, but was inadvertently limited to
4548 Linux and Unix makefiles: Added header file dependencies to ensure
4550 generation of ACPICA core code and utilities. Also simplified the
4552 considerably through the use of the vpath variable to specify search
4556 2) iASL Compiler/Disassembler and Tools:
4558 iASL: Implemented support to check the access length for all fields
4560 access named Resource Descriptor fields. For example, if a resource field
4562 defined to be two bits, a warning is issued if a CreateXxxxField() is
4564 with an incorrect bit length. This is implemented for all current
4566 descriptor names. ACPICA BZ 930.
4568 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
4572 iASL: Fixed a couple of issues associated with variable-length package
4573 objects. 1) properly handle constants like One, Ones, Zero -- do not make
4575 VAR_PACKAGE when these are used as a package length. 2) Allow the
4577 opcode (in addition to PACKAGE) when validating object types for
4581 iASL: Emit statistics for all output files (instead of just the ASL input
4583 AML output). Includes listings, hex files, etc.
4585 iASL: Added -G option to the table compiler to allow the compilation of
4587 ACPI tables. The only part of a table that is required is the standard
4592 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
4594 which also adds correct 64-bit support. Also, now all output filenames
4596 completely lower case.
4598 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
4599 loading table files. A warning is issued for any such tables. The only
4600 exception is an FADT. This also fixes a possible fault when attempting to
4602 non-AML tables. ACPICA BZ 932.
4604 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
4606 missing table terminator could cause a fault when using the -p option.
4608 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
4611 3) Example Code and Data Size
4613 These are the sizes for the OS-independent acpica.lib produced by the
4614 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4615 includes the debug output trace mechanism and has a much larger code and
4619 Previous Release (VC 9.0):
4620 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4621 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4622 Current Release (VC 9.0):
4623 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4624 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4627 ----------------------------------------
4628 23 June 2011. Summary of changes for version 20110623:
4630 1) ACPI CA Core Subsystem:
4632 Updated the predefined name repair mechanism to not attempt repair of a
4634 return object if a _PSS object is present. We can only sort the _TSS
4636 package if there is no _PSS within the same scope. This is because if
4639 present, the ACPI specification dictates that the _TSS Power Dissipation
4641 is to be ignored, and therefore some BIOSs leave garbage values in the
4643 Power field(s). In this case, it is best to just return the _TSS package
4645 is. Reported by, and fixed with assistance from Fenghua Yu.
4647 Added an option to globally disable the control method return value
4649 and repair. This runtime option can be used to disable return value
4652 this is causing a problem on a particular machine. Also added an option
4654 AcpiExec (-dr) to set this disable flag.
4656 All makefiles and project files: Major changes to improve generation of
4658 tools. ACPICA BZ 912:
4659 Reduce default optimization levels to improve compatibility
4660 For Linux, add strict-aliasing=0 for gcc 4
4661 Cleanup and simplify use of command line defines
4662 Cleanup multithread library support
4663 Improve usage messages
4665 Linux-specific header: update handling of THREAD_ID and pthread. For the
4667 bit case, improve casting to eliminate possible warnings, especially with
4671 Example Code and Data Size: These are the sizes for the OS-independent
4672 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4674 version of the code includes the debug output trace mechanism and has a
4676 larger code and data size.
4678 Previous Release (VC 9.0):
4679 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4680 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4681 Current Release (VC 9.0):
4682 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4683 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4685 2) iASL Compiler/Disassembler and Tools:
4687 With this release, a new utility named "acpihelp" has been added to the
4689 package. This utility summarizes the ACPI specification chapters for the
4691 and AML languages. It generates under Linux/Unix as well as Windows, and
4692 provides the following functionality:
4693 Find/display ASL operator(s) -- with description and syntax.
4694 Find/display ASL keyword(s) -- with exact spelling and descriptions.
4695 Find/display ACPI predefined name(s) -- with description, number
4696 of arguments, and the return value data type.
4697 Find/display AML opcode name(s) -- with opcode, arguments, and
4699 Decode/display AML opcode -- with opcode name, arguments, and
4702 Service Layers: Make multi-thread support configurable. Conditionally
4704 the multi-thread support so that threading libraries will not be linked
4707 necessary. The only tool that requires multi-thread support is AcpiExec.
4709 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
4711 Bison appear to want the interface to yyerror to be a const char * (or at
4712 least this is a problem when generating iASL on some systems.) ACPICA BZ
4716 Tools: Fix for systems where O_BINARY is not defined. Only used for
4718 versions of the tools.
4720 ----------------------------------------
4721 27 May 2011. Summary of changes for version 20110527:
4723 1) ACPI CA Core Subsystem:
4725 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
4727 signature. Now, only allow SSDT, OEMx, and a null signature. History:
4728 1) Originally, we checked the table signature for "SSDT" or "PSDT".
4729 (PSDT is now obsolete.)
4730 2) We added support for OEMx tables, signature "OEM" plus a fourth
4731 "don't care" character.
4732 3) Valid tables were encountered with a null signature, so we just
4733 gave up on validating the signature, (05/2008).
4734 4) We encountered non-AML tables such as the MADT, which caused
4735 interpreter errors and kernel faults. So now, we once again allow
4736 only SSDT, OEMx, and now, also a null signature. (05/2011).
4738 Added the missing _TDL predefined name to the global name list in order
4740 enable validation. Affects both the core ACPICA code and the iASL
4743 Example Code and Data Size: These are the sizes for the OS-independent
4744 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4746 version of the code includes the debug output trace mechanism and has a
4748 larger code and data size.
4750 Previous Release (VC 9.0):
4751 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4752 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4753 Current Release (VC 9.0):
4754 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4755 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4757 2) iASL Compiler/Disassembler and Tools:
4759 Debugger/AcpiExec: Implemented support for "complex" method arguments on
4761 debugger command line. This adds support beyond simple integers --
4763 Strings, Buffers, and Packages. Includes support for nested packages.
4764 Increased the default command line buffer size to accommodate these
4766 See the ACPICA reference for details and syntax. ACPICA BZ 917.
4768 Debugger/AcpiExec: Implemented support for "default" method arguments for
4770 Execute/Debug command. Now, the debugger will always invoke a control
4772 with the required number of arguments -- even if the command line
4774 none or insufficient arguments. It uses default integer values for any
4776 arguments. Also fixes a bug where only six method arguments maximum were
4777 supported instead of the required seven.
4779 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
4781 also return status in order to prevent buffer overruns. See the ACPICA
4782 reference for details and syntax. ACPICA BZ 921
4784 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
4785 makefiles to simplify support for the two different but similar parser
4786 generators, bison and yacc.
4788 Updated the generic unix makefile for gcc 4. The default gcc version is
4790 expected to be 4 or greater, since options specific to gcc 4 are used.
4792 ----------------------------------------
4793 13 April 2011. Summary of changes for version 20110413:
4795 1) ACPI CA Core Subsystem:
4797 Implemented support to execute a so-called "orphan" _REG method under the
4799 device. This change will force the execution of a _REG method underneath
4802 device even if there is no corresponding operation region of type
4803 EmbeddedControl. Fixes a problem seen on some machines and apparently is
4804 compatible with Windows behavior. ACPICA BZ 875.
4806 Added more predefined methods that are eligible for automatic NULL
4808 element removal. This change adds another group of predefined names to
4811 of names that can be repaired by having NULL package elements dynamically
4812 removed. This group are those methods that return a single variable-
4814 package containing simple data types such as integers, buffers, strings.
4816 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
4819 and _TZD. ACPICA BZ 914.
4821 Split and segregated all internal global lock functions to a new file,
4824 Updated internal address SpaceID for DataTable regions. Moved this
4827 id in preparation for ACPI 5.0 changes that will include some new space
4830 change should not affect user/host code.
4832 Example Code and Data Size: These are the sizes for the OS-independent
4834 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4836 the code includes the debug output trace mechanism and has a much larger
4841 Previous Release (VC 9.0):
4842 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4843 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4844 Current Release (VC 9.0):
4845 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4846 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4848 2) iASL Compiler/Disassembler and Tools:
4850 iASL/DTC: Major update for new grammar features. Allow generic data types
4852 custom ACPI tables. Field names are now optional. Any line can be split
4854 multiple lines using the continuation char (\). Large buffers now use
4856 continuation character(s) and no colon on the continuation lines. See the
4858 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
4861 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
4863 Since the parser stuffs a "zero" as the return value for these statements
4866 the underlying AML grammar), they were seen as "return with value" by the
4868 semantic checking. They are now seen correctly as "null" return
4871 iASL: Check if a_REG declaration has a corresponding Operation Region.
4873 check for each _REG to ensure that there is in fact a corresponding
4875 region declaration in the same scope. If not, the _REG method is not very
4877 since it probably won't be executed. ACPICA BZ 915.
4879 iASL/DTC: Finish support for expression evaluation. Added a new
4882 that implements c-style operator precedence and parenthesization. ACPICA
4886 Disassembler/DTC: Remove support for () and <> style comments in data
4889 that DTC has full expression support, we don't want to have comment
4892 start with a parentheses or a less-than symbol. Now, only the standard /*
4895 comments are supported, as well as the bracket [] comments.
4897 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
4899 headers in the acpidump file. Update the header validation to support
4901 tables. Problem introduced in previous AcpiXtract version in the change
4903 support "wrong checksum" error messages emitted by acpidump utility.
4905 iASL: Add a * option to generate all template files (as a synonym for
4909 "iasl -T *" or "iasl -T ALL".
4911 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
4913 abort the compiler on "fatal" errors, simply should abort the current
4915 This allows multiple compiles with a single (possibly wildcard) compiler
4918 ----------------------------------------
4919 16 March 2011. Summary of changes for version 20110316:
4921 1) ACPI CA Core Subsystem:
4923 Fixed a problem caused by a _PRW method appearing at the namespace root
4925 during the setup of wake GPEs. A fault could occur if a _PRW directly
4928 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
4930 Implemented support for "spurious" Global Lock interrupts. On some
4932 global lock interrupt can occur without the pending flag being set. Upon
4935 interrupt, we now ensure that a thread is actually waiting for the lock
4937 signaling GL availability. Rafael Wysocki, Bob Moore.
4939 Example Code and Data Size: These are the sizes for the OS-independent
4941 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4943 the code includes the debug output trace mechanism and has a much larger
4948 Previous Release (VC 9.0):
4949 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4950 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4951 Current Release (VC 9.0):
4952 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4953 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4955 2) iASL Compiler/Disassembler and Tools:
4957 Implemented full support for the "SLIC" ACPI table. Includes support in
4959 header files, disassembler, table compiler, and template generator. Bob
4963 AcpiXtract: Correctly handle embedded comments and messages from
4965 Apparently some or all versions of acpidump will occasionally emit a
4968 "Wrong checksum", etc., into the dump file. This was causing problems for
4969 AcpiXtract. ACPICA BZ 905.
4971 iASL: Fix the Linux makefile by removing an inadvertent double file
4975 AcpiExec: Update installation of operation region handlers. Install one
4977 for a user-defined address space. This is used by the ASL test suite
4980 ----------------------------------------
4981 11 February 2011. Summary of changes for version 20110211:
4983 1) ACPI CA Core Subsystem:
4985 Added a mechanism to defer _REG methods for some early-installed
4987 Most user handlers should be installed before call to
4988 AcpiEnableSubsystem.
4989 However, Event handlers and region handlers should be installed after
4990 AcpiInitializeObjects. Override handlers for the "default" regions should
4992 installed early, however. This change executes all _REG methods for the
4993 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
4994 chicken/egg issues between them. ACPICA BZ 848.
4996 Implemented an optimization for GPE detection. This optimization will
4998 ignore GPE registers that contain no enabled GPEs -- there is no need to
4999 read the register since this information is available internally. This
5000 becomes more important on machines with a large GPE space. ACPICA
5002 884. Lin Ming. Suggestion from Joe Liu.
5004 Removed all use of the highly unreliable FADT revision field. The
5006 number in the FADT has been found to be completely unreliable and cannot
5008 trusted. Only the actual table length can be used to infer the version.
5010 change updates the ACPICA core and the disassembler so that both no
5012 even look at the FADT version and instead depend solely upon the FADT
5015 Fix an unresolved name issue for the no-debug and no-error-message source
5016 generation cases. The _AcpiModuleName was left undefined in these cases,
5018 it is actually needed as a parameter to some interfaces. Define
5019 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5021 Split several large files (makefiles and project files updated)
5022 utglobal.c -> utdecode.c
5023 dbcomds.c -> dbmethod.c dbnames.c
5024 dsopcode.c -> dsargs.c dscontrol.c
5025 dsload.c -> dsload2.c
5026 aslanalyze.c -> aslbtypes.c aslwalks.c
5028 Example Code and Data Size: These are the sizes for the OS-independent
5029 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5030 debug version of the code includes the debug output trace mechanism and
5032 a much larger code and data size.
5034 Previous Release (VC 9.0):
5035 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5036 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5037 Current 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
5041 2) iASL Compiler/Disassembler and Tools:
5043 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5044 These are useful C-style macros with the standard definitions. ACPICA
5047 iASL/DTC: Added support for integer expressions and labels. Support for
5049 expressions for all integer fields in all ACPI tables. Support for labels
5051 "generic" portions of tables such as UEFI. See the iASL reference manual.
5053 Debugger: Added a command to display the status of global handlers. The
5054 "handlers" command will display op region, fixed event, and miscellaneous
5055 global handlers. installation status -- and for op regions, whether
5057 or user-installed handler will be used.
5059 iASL: Warn if reserved method incorrectly returns a value. Many
5061 names are defined such that they do not return a value. If implemented as
5063 method, issue a warning if such a name explicitly returns a value. ACPICA
5066 iASL: Added detection of GPE method name conflicts. Detects a conflict
5068 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5070 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5072 iASL/DTC: Fixed a couple input scanner issues with comments and line
5073 numbers. Comment remover could get confused and miss a comment ending.
5075 a problem with line counter maintenance.
5077 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5079 no need to abort on simple errors within a field definition.
5081 Debugger: Simplified the output of the help command. All help output now
5083 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5085 ----------------------------------------
5086 12 January 2011. Summary of changes for version 20110112:
5088 1) ACPI CA Core Subsystem:
5090 Fixed a race condition between method execution and namespace walks that
5092 possibly cause a fault. The problem was apparently introduced in version
5093 20100528 as a result of a performance optimization that reduces the
5096 namespace walks upon method exit by using the delete_namespace_subtree
5097 function instead of the delete_namespace_by_owner function used
5099 Bug is a missing namespace lock in the delete_namespace_subtree function.
5100 dana.myers@oracle.com
5102 Fixed several issues and a possible fault with the automatic "serialized"
5103 method support. History: This support changes a method to "serialized" on
5105 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5106 possibility that it cannot handle reentrancy. This fix repairs a couple
5108 issues seen in the field, especially on machines with many cores:
5110 1) Delete method children only upon the exit of the last thread,
5111 so as to not delete objects out from under other running threads
5112 (and possibly causing a fault.)
5113 2) Set the "serialized" bit for the method only upon the exit of the
5114 Last thread, so as to not cause deadlock when running threads
5116 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5117 so that there is no longer any confusion between the two.
5119 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5121 Debugger: Now lock the namespace for duration of a namespace dump.
5123 issues if the namespace is changing dynamically underneath the debugger.
5124 Especially affects temporary namespace nodes, since the debugger displays
5127 Updated the ordering of include files. The ACPICA headers should appear
5128 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5130 any necessary compiler-specific defines, etc. Affects the ACPI-related
5134 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5136 to all module headers and signons, including the Linux header. This
5138 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5141 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5142 project files for VC++ 6.0 are now obsolete. New project files can be
5144 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5147 Example Code and Data Size: These are the sizes for the OS-independent
5148 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5149 debug version of the code includes the debug output trace mechanism and
5151 much larger code and data size.
5153 Previous Release (VC 6.0):
5154 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5155 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5156 Current Release (VC 9.0):
5157 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5158 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5160 2) iASL Compiler/Disassembler and Tools:
5162 iASL: Added generic data types to the Data Table compiler. Add "generic"
5164 types such as UINT32, String, Unicode, etc., to simplify the generation
5166 platform-defined tables such as UEFI. Lin Ming.
5168 iASL: Added listing support for the Data Table Compiler. Adds listing
5170 (-l) to display actual binary output for each line of input code.
5172 ----------------------------------------
5173 09 December 2010. Summary of changes for version 20101209:
5175 1) ACPI CA Core Subsystem:
5177 Completed the major overhaul of the GPE support code that was begun in
5179 2010. Major features include: removal of _PRW execution in ACPICA (host
5180 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
5181 changes to existing interfaces, simplification of GPE handler operation,
5183 a handful of new interfaces:
5189 One new file, evxfgpe.c to consolidate all external GPE interfaces.
5191 See the ACPICA Programmer Reference for full details and programming
5192 information. See the new section 4.4 "General Purpose Event (GPE)
5194 for a full overview, and section 8.7 "ACPI General Purpose Event
5196 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
5198 Bob Moore, Rafael Wysocki.
5200 Implemented a new GPE feature for Windows compatibility, the "Implicit
5202 GPE Notify". This feature will automatically issue a Notify(2) on a
5204 when a Wake GPE is received if there is no corresponding GPE method or
5205 handler. ACPICA BZ 870.
5207 Fixed a problem with the Scope() operator during table parse and load
5209 During load phase (table load or method execution), the scope operator
5211 not enter the target into the namespace. Instead, it should open a new
5213 at the target location. Linux BZ 19462, ACPICA BZ 882.
5215 Example Code and Data Size: These are the sizes for the OS-independent
5216 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5217 debug version of the code includes the debug output trace mechanism and
5219 much larger code and data size.
5222 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5223 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5225 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5226 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5228 2) iASL Compiler/Disassembler and Tools:
5230 iASL: Relax the alphanumeric restriction on _CID strings. These strings
5232 "bus-specific" per the ACPI specification, and therefore any characters
5234 acceptable. The only checks that can be performed are for a null string
5236 perhaps for a leading asterisk. ACPICA BZ 886.
5238 iASL: Fixed a problem where a syntax error that caused a premature EOF
5239 condition on the source file emitted a very confusing error message. The
5240 premature EOF is now detected correctly. ACPICA BZ 891.
5242 Disassembler: Decode the AccessSize within a Generic Address Structure
5244 access, word access, etc.) Note, this field does not allow arbitrary bit
5245 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
5247 New: AcpiNames utility - Example namespace dump utility. Shows an example
5249 ACPICA configuration for a minimal namespace dump utility. Uses table and
5250 namespace managers, but no AML interpreter. Does not add any
5252 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
5253 partition and configure ACPICA. ACPICA BZ 883.
5255 AML Debugger: Increased the debugger buffer size for method return
5257 Was 4K, increased to 16K. Also enhanced error messages for debugger
5259 execution, including the buffer overflow case.
5261 ----------------------------------------
5262 13 October 2010. Summary of changes for version 20101013:
5264 1) ACPI CA Core Subsystem:
5266 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
5268 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
5269 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
5271 Changed the type of the predefined namespace object _TZ from ThermalZone
5273 Device. This was found to be confusing to the host software that
5275 the various thermal zones, since _TZ is not really a ThermalZone.
5278 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
5281 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
5282 string is "Windows 2006 SP2".
5284 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
5286 code automatically repairs _HID-related strings, this type of code is no
5287 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
5290 Example Code and Data Size: These are the sizes for the OS-independent
5291 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5292 debug version of the code includes the debug output trace mechanism and
5294 much larger code and data size.
5297 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5298 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5300 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5301 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5303 2) iASL Compiler/Disassembler and Tools:
5305 iASL: Implemented additional compile-time validation for _HID strings.
5307 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
5310 the string must be exactly seven or eight characters. For both _HID and
5312 strings, all characters must be alphanumeric. ACPICA BZ 874.
5314 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
5315 descriptors that are mostly or all zeros, with the expectation that they
5317 be filled in at runtime. iASL now allows this as long as there is a
5319 tag" (name) associated with the descriptor, which gives the ASL a handle
5320 needed to modify the descriptor. ACPICA BZ 873.
5322 Added single-thread support to the generic Unix application OSL.
5324 for iASL support, this change removes the use of semaphores in the
5326 threaded ACPICA tools/applications - increasing performance. The
5327 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
5328 option. ACPICA BZ 879.
5330 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
5332 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
5334 iASL: Moved all compiler messages to a new file, aslmessages.h.
5336 ----------------------------------------
5337 15 September 2010. Summary of changes for version 20100915:
5339 1) ACPI CA Core Subsystem:
5341 Removed the AcpiOsDerivePciId OSL interface. The various host
5343 of this function were not OS-dependent and are now obsolete and can be
5344 removed from all host OSLs. This function has been replaced by
5345 AcpiHwDerivePciId, which is now part of the ACPICA core code.
5346 AcpiHwDerivePciId has been implemented without recursion. Adds one new
5347 module, hwpci.c. ACPICA BZ 857.
5349 Implemented a dynamic repair for _HID and _CID strings. The following
5350 problems are now repaired at runtime: 1) Remove a leading asterisk in the
5351 string, and 2) the entire string is uppercased. Both repairs are in
5352 accordance with the ACPI specification and will simplify host driver
5356 The ACPI_THREAD_ID type is no longer configurable, internally it is now
5357 always UINT64. This simplifies the ACPICA code, especially any printf
5359 UINT64 is the only common data type for all thread_id types across all
5360 operating systems. It is now up to the host OSL to cast the native
5362 type to UINT64 before returning the value to ACPICA (via
5364 Lin Ming, Bob Moore.
5366 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
5368 keyword is not standard across compilers, and this type allows inline to
5370 configured on a per-compiler basis. Lin Ming.
5372 Made the system global AcpiGbl_SystemAwakeAndRunning publically
5374 Added an extern for this boolean in acpixf.h. Some hosts utilize this
5376 during suspend/restore operations. ACPICA BZ 869.
5378 All code that implements error/warning messages with the "ACPI:" prefix
5380 been moved to a new module, utxferror.c.
5382 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
5384 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
5386 Example Code and Data Size: These are the sizes for the OS-independent
5387 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5388 debug version of the code includes the debug output trace mechanism and
5390 much larger code and data size.
5393 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5394 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5396 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5397 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5399 2) iASL Compiler/Disassembler and Tools:
5401 iASL/Disassembler: Write ACPI errors to stderr instead of the output
5403 This keeps the output files free of random error messages that may
5405 from within the namespace/interpreter code. Used this opportunity to
5407 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
5408 866. Lin Ming, Bob Moore.
5410 Tools: update some printfs for ansi warnings on size_t. Handle width
5412 of size_t on 32-bit versus 64-bit generations. Lin Ming.
5414 ----------------------------------------
5415 06 August 2010. Summary of changes for version 20100806:
5417 1) ACPI CA Core Subsystem:
5419 Designed and implemented a new host interface to the _OSI support code.
5421 will allow the host to dynamically add or remove multiple _OSI strings,
5423 well as install an optional handler that is called for each _OSI
5425 Also added a new AML debugger command, 'osi' to display and modify the
5427 _OSI string table, and test support in the AcpiExec utility. See the
5429 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
5431 AcpiInstallInterface - Add an _OSI string.
5432 AcpiRemoveInterface - Delete an _OSI string.
5433 AcpiInstallInterfaceHandler - Install optional _OSI handler.
5435 AcpiOsValidateInterface - no longer used.
5437 source/components/utilities/utosi.c
5439 Re-introduced the support to enable multi-byte transfers for Embedded
5440 Controller (EC) operation regions. A reported problem was found to be a
5442 in the host OS, not in the multi-byte support. Previously, the maximum
5444 size passed to the EC operation region handler was a single byte. There
5446 often EC Fields larger than one byte that need to be transferred, and it
5448 useful for the EC driver to lock these as a single transaction. This
5450 enables single transfers larger than 8 bits. This effectively changes the
5451 access to the EC space from ByteAcc to AnyAcc, and will probably require
5452 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
5454 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
5456 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
5457 prototype in acpiosxf.h had the output value pointer as a (void *).
5458 It should be a (UINT64 *). This may affect some host OSL code.
5460 Fixed a couple problems with the recently modified Linux makefiles for
5462 and AcpiExec. These new makefiles place the generated object files in the
5463 local directory so that there can be no collisions between the files that
5465 shared between them that are compiled with different options.
5467 Example Code and Data Size: These are the sizes for the OS-independent
5468 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5469 debug version of the code includes the debug output trace mechanism and
5471 much larger code and data size.
5474 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5475 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5477 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5478 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5480 2) iASL Compiler/Disassembler and Tools:
5482 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
5484 namespace from and disassemble an entire group of AML files. Useful for
5485 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
5487 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
5489 iASL: Allow multiple invocations of -e option. This change allows
5491 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
5495 ----------------------------------------
5496 02 July 2010. Summary of changes for version 20100702:
5498 1) ACPI CA Core Subsystem:
5500 Implemented several updates to the recently added GPE reference count
5501 support. The model for "wake" GPEs is changing to give the host OS
5503 control of these GPEs. Eventually, the ACPICA core will not execute any
5505 methods, since the host already must execute them. Also, additional
5507 were made to help ensure that the reference counts are kept in proper
5508 synchronization with reality. Rafael J. Wysocki.
5510 1) Ensure that GPEs are not enabled twice during initialization.
5511 2) Ensure that GPE enable masks stay in sync with the reference count.
5512 3) Do not inadvertently enable GPEs when writing GPE registers.
5513 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
5514 interface. This interface will set or clear individual GPEs for wakeup.
5515 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
5517 are now used for "runtime" GPEs only.
5519 Changed the behavior of the GPE install/remove handler interfaces. The
5522 no longer disabled during this process, as it was found to cause problems
5524 some machines. Rafael J. Wysocki.
5526 Reverted a change introduced in version 20100528 to enable Embedded
5527 Controller multi-byte transfers. This change was found to cause problems
5529 Index Fields and possibly Bank Fields. It will be reintroduced when these
5530 problems have been resolved.
5532 Fixed a problem with references to Alias objects within Package Objects.
5534 reference to an Alias within the definition of a Package was not always
5535 resolved properly. Aliases to objects like Processors, Thermal zones,
5537 were resolved to the actual object instead of a reference to the object
5540 should be. Package objects are only allowed to contain integer, string,
5541 buffer, package, and reference objects. Redhat bugzilla 608648.
5543 Example Code and Data Size: These are the sizes for the OS-independent
5544 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5545 debug version of the code includes the debug output trace mechanism and
5547 much larger code and data size.
5550 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5551 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5553 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5554 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5556 2) iASL Compiler/Disassembler and Tools:
5558 iASL: Implemented a new compiler subsystem to allow definition and
5559 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
5561 are called "ACPI Data Tables", and the new compiler is the "Data Table
5562 Compiler". This compiler is intended to simplify the existing error-prone
5563 process of creating these tables for the BIOS, as well as allowing the
5564 disassembly, modification, recompilation, and override of existing ACPI
5566 tables. See the iASL User Guide for detailed information.
5568 iASL: Implemented a new Template Generator option in support of the new
5570 Table Compiler. This option will create examples of all known ACPI tables
5571 that can be used as the basis for table development. See the iASL
5572 documentation and the -T option.
5574 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
5577 Updated the Linux makefiles for iASL and AcpiExec to place the generated
5578 object files in the local directory so that there can be no collisions
5579 between the shared files between them that are generated with different
5582 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
5584 the #define __APPLE__ to enable this support.
5586 ----------------------------------------
5587 28 May 2010. Summary of changes for version 20100528:
5589 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
5590 available at www.acpi.info. This is primarily an errata release.
5592 1) ACPI CA Core Subsystem:
5594 Undefined ACPI tables: We are looking for the definitions for the
5596 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
5598 Implemented support to enable multi-byte transfers for Embedded
5600 (EC) operation regions. Previously, the maximum data size passed to the
5602 operation region handler was a single byte. There are often EC Fields
5604 than one byte that need to be transferred, and it is useful for the EC
5606 to lock these as a single transaction. This change enables single
5608 larger than 8 bits. This effectively changes the access to the EC space
5610 ByteAcc to AnyAcc, and will probably require changes to the host OS
5612 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
5614 transfers. Alexey Starikovskiy, Lin Ming
5616 Implemented a performance enhancement for namespace search and access.
5618 change enhances the performance of namespace searches and walks by adding
5620 backpointer to the parent in each namespace node. On large namespaces,
5622 change can improve overall ACPI performance by up to 9X. Adding a pointer
5624 each namespace node increases the overall size of the internal namespace
5626 about 5%, since each namespace entry usually consists of both a namespace
5627 node and an ACPI operand object. However, this is the first growth of the
5628 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
5630 Implemented a performance optimization that reduces the number of
5632 walks. On control method exit, only walk the namespace if the method is
5634 to have created namespace objects outside of its local scope. Previously,
5636 entire namespace was traversed on each control method exit. This change
5638 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
5641 Added support to truncate I/O addresses to 16 bits for Windows
5643 Some ASL code has been seen in the field that inadvertently has bits set
5644 above bit 15. This feature is optional and is enabled if the BIOS
5646 any Windows OSI strings. It can also be enabled by the host OS. Matthew
5649 Added support to limit the maximum time for the ASL Sleep() operator. To
5650 prevent accidental deep sleeps, limit the maximum time that Sleep() will
5651 actually sleep. Configurable, the default maximum is two seconds. ACPICA
5654 Added run-time validation support for the _WDG and_WED Microsoft
5656 methods. These objects are defined by "Windows Instrumentation", and are
5658 part of the ACPI spec. ACPICA BZ 860.
5660 Expanded all statistic counters used during namespace and device
5661 initialization from 16 to 32 bits in order to support very large
5664 Replaced all instances of %d in printf format specifiers with %u since
5666 all integers in ACPICA are unsigned.
5668 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
5672 Example Code and Data Size: These are the sizes for the OS-independent
5673 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5674 debug version of the code includes the debug output trace mechanism and
5676 much larger code and data size.
5679 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5680 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5682 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5683 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5685 2) iASL Compiler/Disassembler and Tools:
5687 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
5688 methods. These objects are defined by "Windows Instrumentation", and are
5690 part of the ACPI spec. ACPICA BZ 860.
5692 AcpiExec: added option to disable the memory tracking mechanism. The -dt
5693 option will disable the tracking mechanism, which improves performance
5696 AcpiExec: Restructured the command line options into -d (disable) and -e
5699 ----------------------------------------
5700 28 April 2010. Summary of changes for version 20100428:
5702 1) ACPI CA Core Subsystem:
5704 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
5705 including FADT-based and GPE Block Devices, execute any _PRW methods in
5707 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
5708 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
5709 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
5710 Devices. Provides compatibility with other ACPI implementations. Two new
5711 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
5714 Fixed a regression introduced in version 20100331 within the table
5716 where initial table loading could fail. This was introduced in the fix
5718 AcpiReallocateRootTable. Also, renamed some of fields in the table
5720 data structures to clarify their meaning and use.
5722 Fixed a possible allocation overrun during internal object copy in
5723 AcpiUtCopySimpleObject. The original code did not correctly handle the
5725 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
5728 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
5729 possible access beyond end-of-allocation. Also, now fully validate
5731 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
5733 Example Code and Data Size: These are the sizes for the OS-independent
5734 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5735 debug version of the code includes the debug output trace mechanism and
5737 much larger code and data size.
5740 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5741 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5743 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5744 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5746 2) iASL Compiler/Disassembler and Tools:
5748 iASL: Implemented Min/Max/Len/Gran validation for address resource
5749 descriptors. This change implements validation for the address fields
5751 are common to all address-type resource descriptors. These checks are
5752 implemented: Checks for valid Min/Max, length within the Min/Max window,
5753 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
5755 table 6-40 in the ACPI 4.0a specification. Also split the large
5757 and aslrestype2.c files into five new files. ACPICA BZ 840.
5759 iASL: Added support for the _Wxx predefined names. This support was
5761 and these names were not recognized by the compiler as valid predefined
5762 names. ACPICA BZ 851.
5764 iASL: Added an error for all predefined names that are defined to return
5766 value and thus must be implemented as Control Methods. These include all
5768 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
5769 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
5771 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
5773 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
5775 dynamically loaded via the Load() operator. Also cleaned up output for
5778 ta and -tc options. ACPICA BZ 853.
5780 Tests: Added a new file with examples of extended iASL error checking.
5781 Demonstrates the advanced error checking ability of the iASL compiler.
5782 Available at tests/misc/badcode.asl.
5784 ----------------------------------------
5785 31 March 2010. Summary of changes for version 20100331:
5787 1) ACPI CA Core Subsystem:
5789 Completed a major update for the GPE support in order to improve support
5791 shared GPEs and to simplify both host OS and ACPICA code. Added a
5793 count mechanism to support shared GPEs that require multiple device
5795 Several external interfaces have changed. One external interface has been
5796 removed. One new external interface was added. Most of the GPE external
5797 interfaces now use the GPE spinlock instead of the events mutex (and the
5798 Flags parameter for many GPE interfaces has been removed.) See the
5800 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
5802 Wysocki. ACPICA BZ 831.
5805 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
5811 Implemented write support for DataTable operation regions. These regions
5813 defined via the DataTableRegion() operator. Previously, only read support
5815 implemented. The ACPI specification allows DataTableRegions to be
5819 Implemented a new subsystem option to force a copy of the DSDT to local
5820 memory. Optionally copy the entire DSDT to local memory (instead of
5822 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
5824 the original DSDT, creating the need for this option. Default is FALSE,
5828 Implemented detection of a corrupted or replaced DSDT. This change adds
5829 support to detect a DSDT that has been corrupted and/or replaced from
5831 the OS (by firmware). This is typically catastrophic for the system, but
5833 been seen on some machines. Once this problem has been detected, the DSDT
5834 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
5836 Fixed two problems with AcpiReallocateRootTable during the root table
5838 When copying the root table to the new allocation, the length used was
5839 incorrect. The new size was used instead of the current table size,
5841 too much data was copied. Also, the count of available slots for ACPI
5843 was not set correctly. Alexey Starikovskiy, Bob Moore.
5845 Example Code and Data Size: These are the sizes for the OS-independent
5846 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5847 debug version of the code includes the debug output trace mechanism and
5849 much larger code and data size.
5852 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5853 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5855 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5856 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5858 2) iASL Compiler/Disassembler and Tools:
5860 iASL: Implement limited typechecking for values returned from predefined
5861 control methods. The type of any returned static (unnamed) object is now
5862 validated. For example, Return(1). ACPICA BZ 786.
5864 iASL: Fixed a predefined name object verification regression. Fixes a
5866 introduced in version 20100304. An error is incorrectly generated if a
5867 predefined name is declared as a static named object with a value defined
5868 using the keywords "Zero", "One", or "Ones". Lin Ming.
5870 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
5872 reducing the requested registry access rights. ACPICA BZ 842.
5874 Disassembler: fixed a possible fault when generating External()
5876 Introduced in commit ae7d6fd: Properly handle externals with parent-
5878 (carat). Fixes a string length allocation calculation. Lin Ming.
5880 ----------------------------------------
5881 04 March 2010. Summary of changes for version 20100304:
5883 1) ACPI CA Core Subsystem:
5885 Fixed a possible problem with the AML Mutex handling function
5886 AcpiExReleaseMutex where the function could fault under the very rare
5887 condition when the interpreter has blocked, the interpreter lock is
5889 the interpreter is then reentered via the same thread, and attempts to
5890 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
5894 Implemented additional configuration support for the AML "Debug Object".
5895 Output from the debug object can now be enabled via a global variable,
5896 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
5898 This debug output is now available in the release version of ACPICA
5900 of just the debug version. Also, the entire debug output module can now
5902 configured out of the ACPICA build if desired. One new file added,
5903 executer/exdebug.c. Lin Ming, Bob Moore.
5905 Added header support for the ACPI MCHI table (Management Controller Host
5906 Interface Table). This table was added in ACPI 4.0, but the defining
5908 has only recently become available.
5910 Standardized output of integer values for ACPICA warnings/errors. Always
5912 0x prefix for hex output, always use %u for unsigned integer decimal
5914 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
5916 invocations.) These invocations were converted from the original
5917 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
5919 Example Code and Data Size: These are the sizes for the OS-independent
5920 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5921 debug version of the code includes the debug output trace mechanism and
5923 much larger code and data size.
5926 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5927 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5929 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5930 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5932 2) iASL Compiler/Disassembler and Tools:
5934 iASL: Implemented typechecking support for static (non-control method)
5935 predefined named objects that are declared with the Name() operator. For
5936 example, the type of this object is now validated to be of type Integer:
5937 Name(_BBN, 1). This change migrates the compiler to using the core
5939 name table instead of maintaining a local version. Added a new file,
5940 aslpredef.c. ACPICA BZ 832.
5942 Disassembler: Added support for the ACPI 4.0 MCHI table.
5944 ----------------------------------------
5945 21 January 2010. Summary of changes for version 20100121:
5947 1) ACPI CA Core Subsystem:
5949 Added the 2010 copyright to all module headers and signons. This affects
5950 virtually every file in the ACPICA core subsystem, the iASL compiler, the
5951 tools/utilities, and the test suites.
5953 Implemented a change to the AcpiGetDevices interface to eliminate
5955 invocations of the _STA method. In the case where a specific _HID is
5956 requested, do not run _STA until a _HID match is found. This eliminates
5957 potentially dozens of _STA calls during a search for a particular
5959 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
5961 Implemented an additional repair for predefined method return values.
5963 to repair unexpected NULL elements within returned Package objects.
5966 Integer of value zero, a NULL String, or a zero-length Buffer as
5968 ACPICA BZ 818. Lin Ming, Bob Moore.
5970 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
5972 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
5974 64-bit AML integers). It is now obsolete and this change removes it from
5976 ACPICA code base, replaced by UINT64. The original typedef has been
5978 for now for compatibility with existing device driver code. ACPICA BZ
5981 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
5983 the parse tree object.
5985 Added additional warning options for the gcc-4 generation. Updated the
5987 accordingly. This includes some code restructuring to eliminate
5989 code, elimination of some gotos, elimination of unused return values,
5991 additional casting, and removal of redundant declarations.
5993 Example Code and Data Size: These are the sizes for the OS-independent
5994 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5995 debug version of the code includes the debug output trace mechanism and
5997 much larger code and data size.
6000 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6001 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6003 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6004 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6006 2) iASL Compiler/Disassembler and Tools:
6008 No functional changes for this release.
6010 ----------------------------------------
6011 14 December 2009. Summary of changes for version 20091214:
6013 1) ACPI CA Core Subsystem:
6015 Enhanced automatic data type conversions for predefined name repairs.
6017 change expands the automatic repairs/conversions for predefined name
6019 values to make Integers, Strings, and Buffers fully interchangeable.
6022 Buffer can be converted to a Package of Integers if necessary. The
6024 module was completely restructured. Lin Ming, Bob Moore.
6026 Implemented automatic removal of null package elements during predefined
6028 repairs. This change will automatically remove embedded and trailing NULL
6029 package elements from returned package objects that are defined to
6032 variable number of sub-packages. The driver is then presented with a
6034 with no null elements to deal with. ACPICA BZ 819.
6036 Implemented a repair for the predefined _FDE and _GTM names. The expected
6037 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6039 possible problems (both seen in the field), where a package of integers
6041 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6044 Implemented additional module-level code support. This change will
6046 execute module-level code that is not at the root of the namespace (under
6048 Device object, etc.). Now executes the code within the current scope
6050 of the root. ACPICA BZ 762. Lin Ming.
6052 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6054 problem where mutex errors can occur when running a _REG method that is
6056 the same scope as a method-defined operation region or an operation
6058 under a module-level IF block. This type of code is rare, so the problem
6060 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6062 Fixed a possible memory leak during module-level code execution. An
6064 could be leaked for each block of executed module-level code if the
6065 interpreter slack mode is enabled This change deletes any implicitly
6067 object from the module-level code block. Lin Ming.
6069 Removed messages for successful predefined repair(s). The repair
6071 was considered too wordy. Now, messages are only unconditionally emitted
6073 the return object cannot be repaired. Existing messages for successful
6074 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6077 Example Code and Data Size: These are the sizes for the OS-independent
6078 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6079 debug version of the code includes the debug output trace mechanism and
6081 much larger code and data size.
6084 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6085 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6087 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6088 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6090 2) iASL Compiler/Disassembler and Tools:
6092 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6094 were no longer automatically removed at the termination of the compile.
6096 acpiexec: Implemented the -f option to specify default region fill value.
6097 This option specifies the value used to initialize buffers that simulate
6098 operation regions. Default value is zero. Useful for debugging problems
6100 depend on a specific initial value for a region or field.
6102 ----------------------------------------
6103 12 November 2009. Summary of changes for version 20091112:
6105 1) ACPI CA Core Subsystem:
6107 Implemented a post-order callback to AcpiWalkNamespace. The existing
6108 interface only has a pre-order callback. This change adds an additional
6109 parameter for a post-order callback which will be more useful for bus
6111 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6113 Modified the behavior of the operation region memory mapping cache for
6114 SystemMemory. Ensure that the memory mappings created for operation
6116 do not cross 4K page boundaries. Crossing a page boundary while mapping
6117 regions can cause kernel warnings on some hosts if the pages have
6119 attributes. Such regions are probably BIOS bugs, and this is the
6121 Linux BZ 14445. Lin Ming.
6123 Implemented an automatic repair for predefined methods that must return
6124 sorted lists. This change will repair (by sorting) packages returned by
6126 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6128 and do not contain NULL package elements. Adds one new file,
6129 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6131 Fixed a possible fault during predefined name validation if a return
6133 object contains NULL elements. Also adds a warning if a NULL element is
6134 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6136 include repair or removal of all such NULL elements where possible.
6138 Implemented additional module-level executable AML code support. This
6140 will execute module-level code that is not at the root of the namespace
6141 (under a Device object, etc.) at table load time. Module-level executable
6143 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6145 Implemented a new internal function to create Integer objects. This
6147 simplifies miscellaneous object creation code. ACPICA BZ 823.
6149 Reduced the severity of predefined repair messages, Warning to Info.
6151 the object was successfully repaired, a warning is too severe. Reduced to
6153 info message for now. These messages may eventually be changed to debug-
6157 Example Code and Data Size: These are the sizes for the OS-independent
6158 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6159 debug version of the code includes the debug output trace mechanism and
6161 much larger code and data size.
6164 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6165 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6167 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6168 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6170 2) iASL Compiler/Disassembler and Tools:
6172 iASL: Implemented Switch() with While(1) so that Break works correctly.
6174 change correctly implements the Switch operator with a surrounding
6176 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
6178 iASL: Added a message if a package initializer list is shorter than
6180 length. Adds a new remark for a Package() declaration if an initializer
6182 exists, but is shorter than the declared length of the package. Although
6183 technically legal, this is probably a coding error and it is seen in the
6184 field. ACPICA BZ 815. Lin Ming, Bob Moore.
6186 iASL: Fixed a problem where the compiler could fault after the maximum
6188 of errors was reached (200).
6190 acpixtract: Fixed a possible warning for pointer cast if the compiler
6192 level set very high.
6194 ----------------------------------------
6195 13 October 2009. Summary of changes for version 20091013:
6197 1) ACPI CA Core Subsystem:
6199 Fixed a problem where an Operation Region _REG method could be executed
6201 than once. If a custom address space handler is installed by the host
6203 the "initialize operation regions" phase of the ACPICA initialization,
6205 _REG methods for that address space could be executed twice. This change
6206 fixes the problem. ACPICA BZ 427. Lin Ming.
6208 Fixed a possible memory leak for the Scope() ASL operator. When the exact
6209 invocation of "Scope(\)" is executed (change scope to root), one internal
6210 operand object was leaked. Lin Ming.
6212 Implemented a run-time repair for the _MAT predefined method. If the _MAT
6213 return value is defined as a Field object in the AML, and the field
6214 size is less than or equal to the default width of an integer (32 or
6216 can incorrectly return an Integer instead of a Buffer. ACPICA now
6217 automatically repairs this problem. ACPICA BZ 810.
6219 Implemented a run-time repair for the _BIF and _BIX predefined methods.
6221 "OEM Information" field is often incorrectly returned as an Integer with
6222 value zero if the field is not supported by the platform. This is due to
6224 ambiguity in the ACPI specification. The field should always be a string.
6225 ACPICA now automatically repairs this problem by returning a NULL string
6226 within the returned Package. ACPICA BZ 807.
6228 Example Code and Data Size: These are the sizes for the OS-independent
6229 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6230 debug version of the code includes the debug output trace mechanism and
6232 much larger code and data size.
6235 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6236 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6238 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6239 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6241 2) iASL Compiler/Disassembler and Tools:
6243 Disassembler: Fixed a problem where references to external symbols that
6244 contained one or more parent-prefixes (carats) were not handled
6246 possibly causing a fault. ACPICA BZ 806. Lin Ming.
6248 Disassembler: Restructured the code so that all functions that handle
6249 external symbols are in a single module. One new file is added,
6252 AML Debugger: Added a max count argument for the Batch command (which
6253 executes multiple predefined methods within the namespace.)
6255 iASL: Updated the compiler documentation (User Reference.) Available at
6256 http://www.acpica.org/documentation/. ACPICA BZ 750.
6258 AcpiXtract: Updated for Lint and other formatting changes. Close all open
6261 ----------------------------------------
6262 03 September 2009. Summary of changes for version 20090903:
6264 1) ACPI CA Core Subsystem:
6266 For Windows Vista compatibility, added the automatic execution of an _INI
6267 method located at the namespace root (\_INI). This method is executed at
6268 table load time. This support is in addition to the automatic execution
6270 \_SB._INI. Lin Ming.
6272 Fixed a possible memory leak in the interpreter for AML package objects
6274 the package initializer list is longer than the defined size of the
6276 This apparently can only happen if the BIOS changes the package size on
6278 fly (seen in a _PSS object), as ASL compilers do not allow this. The
6279 interpreter will truncate the package to the defined size (and issue an
6281 message), but previously could leave the extra objects undeleted if they
6283 pre-created during the argument processing (such is the case if the
6285 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
6287 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
6288 This has been reported in the field. Previously, ACPICA would zero out
6290 buffer/string. Now, the operation is treated as a noop. Provides Windows
6291 compatibility. ACPICA BZ 803. Lin Ming.
6293 Removed an extraneous error message for ASL constructs of the form
6294 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
6296 are seen in many BIOSs and are once again treated as NOOPs and no error
6298 emitted when they are encountered. ACPICA BZ 785.
6300 Fixed an extraneous warning message if a _DSM reserved method returns a
6301 Package object. _DSM can return any type of object, so validation on the
6302 return type cannot be performed. ACPICA BZ 802.
6304 Example Code and Data Size: These are the sizes for the OS-independent
6305 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6306 debug version of the code includes the debug output trace mechanism and
6308 much larger code and data size.
6311 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6312 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6314 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6315 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6317 2) iASL Compiler/Disassembler and Tools:
6319 iASL: Fixed a problem with the use of the Alias operator and Resource
6320 Templates. The correct alias is now constructed and no error is emitted.
6323 iASL: Implemented the -I option to specify additional search directories
6325 include files. Allows multiple additional search paths for include files.
6326 Directories are searched in the order specified on the command line
6328 the local directory is searched.) ACPICA BZ 800.
6330 iASL: Fixed a problem where the full pathname for include files was not
6331 emitted for warnings/errors. This caused the IDE support to not work
6332 properly. ACPICA BZ 765.
6334 iASL: Implemented the -@ option to specify a Windows-style response file
6335 containing additional command line options. ACPICA BZ 801.
6337 AcpiExec: Added support to load multiple AML files simultaneously (such
6340 DSDT and multiple SSDTs). Also added support for wildcards within the AML
6341 pathname. These features allow all machine tables to be easily loaded and
6342 debugged together. ACPICA BZ 804.
6344 Disassembler: Added missing support for disassembly of HEST table Error
6348 ----------------------------------------
6349 30 July 2009. Summary of changes for version 20090730:
6351 The ACPI 4.0 implementation for ACPICA is complete with this release.
6353 1) ACPI CA Core Subsystem:
6355 ACPI 4.0: Added header file support for all new and changed ACPI tables.
6356 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
6358 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
6360 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
6362 have been some ACPI 4.0 changes to other existing tables. Split the large
6363 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
6365 ACPI 4.0: Implemented predefined name validation for all new names. There
6367 31 new names in ACPI 4.0. The predefined validation module was split into
6369 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
6371 Implemented support for so-called "module-level executable code". This is
6372 executable AML code that exists outside of any control method and is
6374 to be executed at table load time. Although illegal since ACPI 2.0, this
6376 of code still exists and is apparently still being created. Blocks of
6378 code are now detected and executed as intended. Currently, the code
6380 must exist under either an If, Else, or While construct; these are the
6381 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
6383 Implemented an automatic dynamic repair for predefined names that return
6384 nested Package objects. This applies to predefined names that are defined
6386 return a variable-length Package of sub-packages. If the number of sub-
6387 packages is one, BIOS code is occasionally seen that creates a simple
6389 package with no sub-packages. This code attempts to fix the problem by
6390 wrapping a new package object around the existing package. These methods
6392 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
6396 Fixed a regression introduced in 20090625 for the AcpiGetDevices
6398 The _HID/_CID matching was broken and no longer matched IDs correctly.
6402 Fixed a problem with AcpiReset where the reset would silently fail if the
6403 register was one of the protected I/O ports. AcpiReset now bypasses the
6405 validation mechanism. This may eventually be driven into the
6409 Fixed a regression related to the recent update of the AcpiRead/Write
6410 interfaces. A sleep/suspend could fail if the optional PM2 Control
6412 does not exist during an attempt to write the Bus Master Arbitration bit.
6413 (However, some hosts already delete the code that writes this bit, and
6415 code may in fact be obsolete at this date.) ACPICA BZ 799.
6417 Fixed a problem where AcpiTerminate could fault if inadvertently called
6419 in succession. ACPICA BZ 795.
6421 Example Code and Data Size: These are the sizes for the OS-independent
6422 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6423 debug version of the code includes the debug output trace mechanism and
6425 much larger code and data size.
6428 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6429 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6431 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6432 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6434 2) iASL Compiler/Disassembler and Tools:
6436 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
6437 changes to existing tables. ACPICA BZ 775.
6439 ----------------------------------------
6440 25 June 2009. Summary of changes for version 20090625:
6442 The ACPI 4.0 Specification was released on June 16 and is available at
6443 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
6444 continue for the next few releases.
6446 1) ACPI CA Core Subsystem:
6448 ACPI 4.0: Implemented interpreter support for the IPMI operation region
6449 address space. Includes support for bi-directional data buffers and an
6451 address space handler (to be installed by an IPMI device driver.) ACPICA
6455 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
6457 support in both the header files and the disassembler.
6459 Completed a major update for the AcpiGetObjectInfo external interface.
6461 - Support for variable, unlimited length HID, UID, and CID strings.
6462 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
6464 - Call the _SxW power methods on behalf of a device object.
6465 - Determine if a device is a PCI root bridge.
6466 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
6467 These changes will require an update to all callers of this interface.
6469 the updated ACPICA Programmer Reference for details. One new source file
6471 been added - utilities/utids.c. ACPICA BZ 368, 780.
6473 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
6474 transfers. The Value parameter has been extended from 32 bits to 64 bits
6476 order to support new ACPI 4.0 tables. These changes will require an
6479 all callers of these interfaces. See the ACPICA Programmer Reference for
6480 details. ACPICA BZ 768.
6482 Fixed several problems with AcpiAttachData. The handler was not invoked
6484 the host node was deleted. The data sub-object was not automatically
6486 when the host node was deleted. The interface to the handler had an
6488 parameter, this was removed. ACPICA BZ 778.
6490 Enhanced the function that dumps ACPI table headers. All non-printable
6491 characters in the string fields are now replaced with '?' (Signature,
6493 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
6494 these fields are occasionally seen in the field. ACPICA BZ 788.
6496 Fixed a problem with predefined method repair code where the code that
6497 attempts to repair/convert an object of incorrect type is only executed
6499 the first time the predefined method is called. The mechanism that
6501 warnings on subsequent calls was interfering with the repair mechanism.
6504 Fixed a possible memory leak in the predefined validation/repair code
6507 buffer is automatically converted to an expected string object.
6509 Removed obsolete 16-bit files from the distribution and from the current
6511 tree head. ACPICA BZ 776.
6513 Example Code and Data Size: These are the sizes for the OS-independent
6514 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6515 debug version of the code includes the debug output trace mechanism and
6517 much larger code and data size.
6520 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6521 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6523 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6524 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6526 2) iASL Compiler/Disassembler and Tools:
6528 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
6529 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
6531 ACPI 4.0: iASL - implemented compile-time validation support for all new
6532 predefined names and control methods (31 total). ACPICA BZ 769.
6534 ----------------------------------------
6535 21 May 2009. Summary of changes for version 20090521:
6537 1) ACPI CA Core Subsystem:
6539 Disabled the preservation of the SCI enable bit in the PM1 control
6541 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
6544 a "preserved" bit - "OSPM always preserves this bit position", section
6545 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
6546 because the bit needs to be explicitly set by the OS as a workaround. No
6547 machines fail if the bit is not preserved. Therefore, ACPICA no longer
6548 attempts to preserve this bit.
6550 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
6551 incorrectly formed _PRT package could cause a fault. Added validation to
6552 ensure that each package element is actually a sub-package.
6554 Implemented a new interface to install or override a single control
6556 AcpiInstallMethod. This interface is useful when debugging in order to
6558 an existing method or to install a missing method without having to
6560 the entire ACPI table. See the ACPICA Programmer Reference for use and
6561 examples. Lin Ming, Bob Moore.
6563 Fixed several reference count issues with the DdbHandle object that is
6564 created from a Load or LoadTable operator. Prevent premature deletion of
6566 object. Also, mark the object as invalid once the table has been
6568 This is needed because the handle itself may not be deleted after the
6570 unload, depending on whether it has been stored in a named object by the
6573 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
6574 mutexes of the same sync level are acquired but then not released in
6576 opposite order, the internally maintained Current Sync Level becomes
6578 and can cause subsequent execution errors. ACPICA BZ 471.
6580 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
6581 specification has been changed to make the SyncLevel for mutex objects
6583 useful. When releasing a mutex, the SyncLevel of the mutex must now be
6585 same as the current sync level. This makes more sense than the previous
6587 (SyncLevel less than or equal). This change updates the code to match the
6590 Fixed a problem with the local version of the AcpiOsPurgeCache function.
6592 (local) cache must be locked during all cache object deletions. Andrew
6595 Updated the Load operator to use operation region interfaces. This
6597 direct memory mapping with region access calls. Now, all region accesses
6599 through the installed region handler as they should.
6601 Simplified and optimized the NsGetNextNode function. Reduced parameter
6603 and reduced code for this frequently used function.
6605 Example Code and Data Size: These are the sizes for the OS-independent
6606 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6607 debug version of the code includes the debug output trace mechanism and
6609 much larger code and data size.
6612 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6613 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6615 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6616 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6618 2) iASL Compiler/Disassembler and Tools:
6620 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
6622 with sub-table disassembly and handling invalid sub-tables. Attempt
6624 after an invalid sub-table ID.
6626 ----------------------------------------
6627 22 April 2009. Summary of changes for version 20090422:
6629 1) ACPI CA Core Subsystem:
6631 Fixed a compatibility issue with the recently released I/O port
6633 mechanism. For windows compatibility, 1) On a port protection violation,
6634 simply ignore the request and do not return an exception (allow the
6636 method to continue execution.) 2) If only part of the request overlaps a
6637 protected port, read/write the individual ports that are not protected.
6641 Enhanced the execution of the ASL/AML BreakPoint operator so that it
6643 breaks into the AML debugger if the debugger is present. This matches the
6644 ACPI-defined behavior.
6646 Fixed several possible warnings related to the use of the configurable
6647 ACPI_THREAD_ID. This type can now be configured as either an integer or a
6648 pointer with no warnings. Also fixes several warnings in printf-like
6649 statements for the 64-bit build when the type is configured as a pointer.
6652 Fixed a number of possible warnings when compiling with gcc 4+ (depending
6654 warning options.) Examples include printf formats, aliasing, unused
6656 missing prototypes, missing switch default statements, use of non-ANSI
6657 library functions, use of non-ANSI constructs. See generate/unix/Makefile
6659 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
6661 Example Code and Data Size: These are the sizes for the OS-independent
6662 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6663 debug version of the code includes the debug output trace mechanism and
6665 much larger code and data size.
6668 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6669 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6671 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6672 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6674 2) iASL Compiler/Disassembler and Tools:
6676 iASL: Fixed a generation warning from Bison 2.3 and fixed several
6681 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
6683 correctly digest Windows/DOS formatted files (with CR/LF).
6685 iASL: Added a new option for "quiet mode" (-va) that produces only the
6686 compilation summary, not individual errors and warnings. Useful for large
6689 AcpiExec: Implemented a new option (-z) to enable a forced
6691 timeout that can be used to detect hang conditions during execution of
6693 code (includes both internal semaphores and AML-defined mutexes and
6696 Added new makefiles for the generation of acpica in a generic unix-like
6697 environment. These makefiles are intended to generate the acpica tools
6699 utilities from the original acpica git source tree structure.
6701 Test Suites: Updated and cleaned up the documentation files. Updated the
6702 copyrights to 2009, affecting all source files. Use the new version of
6704 with quiet mode. Increased the number of available semaphores in the
6706 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
6708 an alternate implementation of the semaphore timeout to allow aslts to
6709 execute fully on Cygwin.
6711 ----------------------------------------
6712 20 March 2009. Summary of changes for version 20090320:
6714 1) ACPI CA Core Subsystem:
6716 Fixed a possible race condition between AcpiWalkNamespace and dynamic
6718 unloads. Added a reader/writer locking mechanism to allow multiple
6720 namespace walks (readers), but block a dynamic table unload until it can
6722 exclusive write access to the namespace. This fixes a problem where a
6724 unload could (possibly catastrophically) delete the portion of the
6726 that is currently being examined by a walk. Adds a new file, utlock.c,
6728 implements the reader/writer lock mechanism. ACPICA BZ 749.
6730 Fixed a regression introduced in version 20090220 where a change to the
6732 handling could cause the ACPICA subsystem to access non-existent I/O
6735 Modified the handling of FADT register and table (FACS/DSDT) addresses.
6737 FADT can contain both 32-bit and 64-bit versions of these addresses.
6738 Previously, the 64-bit versions were favored, meaning that if both 32 and
6740 versions were valid, but not equal, the 64-bit version was used. This was
6741 found to cause some machines to fail. Now, in this case, the 32-bit
6743 is used instead. This now matches the Windows behavior.
6745 Implemented a new mechanism to protect certain I/O ports. Provides
6747 compatibility and protects the standard PC I/O ports from access via AML
6748 code. Adds a new file, hwvalid.c
6750 Fixed a possible extraneous warning message from the FADT support. The
6751 message warns of a 32/64 length mismatch between the legacy and GAS
6752 definitions for a register.
6754 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
6756 made obsolete by the port protection mechanism above. It was previously
6758 to validate the entire address range of an operation region, which could
6760 incorrect if the range included illegal ports, but fields within the
6761 operation region did not actually access those ports. Validation is now
6762 performed on a per-field basis instead of the entire region.
6764 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
6765 Ignored bits must be "preserved" according to the ACPI spec. Usually,
6767 means a read/modify/write when writing to the register. However, for
6769 registers, writing a one means clear the event. Writing a zero means
6771 the event (do not clear.) This behavior is clarified in the ACPI 4.0
6773 and the ACPICA code now simply always writes a zero to the ignored bit.
6775 Modified the handling of ignored bits for the PM1 A/B Control Registers.
6777 per the ACPI specification, for the control registers, preserve
6778 (read/modify/write) all bits that are defined as either reserved or
6781 Updated the handling of write-only bits in the PM1 A/B Control Registers.
6782 When reading the register, zero the write-only bits as per the ACPI spec.
6783 ACPICA BZ 443. Lin Ming.
6785 Removed "Linux" from the list of supported _OSI strings. Linux no longer
6786 wants to reply true to this request. The Windows strings are the only
6788 through the AML that are tested and known to work properly.
6791 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6792 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6794 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6795 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6797 2) iASL Compiler/Disassembler and Tools:
6799 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
6803 ----------------------------------------
6804 20 February 2009. Summary of changes for version 20090220:
6806 1) ACPI CA Core Subsystem:
6808 Optimized the ACPI register locking. Removed locking for reads from the
6810 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
6812 not required when reading the single-bit registers. The
6813 AcpiGetRegisterUnlocked function is no longer needed and has been
6815 This will improve performance for reads on these registers. ACPICA BZ
6818 Fixed the parameter validation for AcpiRead/Write. Now return
6819 AE_BAD_PARAMETER if the input register pointer is null, and
6822 the register has an address of zero. Previously, these cases simply
6824 AE_OK. For optional registers such as PM1B status/enable/control, the
6826 should check for a valid register address before calling. ACPICA BZ 748.
6828 Renamed the external ACPI bit register access functions. Renamed
6829 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
6830 functions. The new names are AcpiReadBitRegister and
6831 AcpiWriteBitRegister.
6832 Also, restructured the code for these functions by simplifying the code
6834 and condensing duplicate code to reduce code size.
6836 Added new functions to transparently handle the possibly split PM1 A/B
6837 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
6839 now handle the split registers for PM1 Status, Enable, and Control.
6844 Added a function to handle the PM1 control registers,
6845 AcpiHwWritePm1Control.
6846 This function writes both of the PM1 control registers (A/B). These
6848 are different than the PM1 A/B status and enable registers in that
6850 values can be written to the A/B registers. Most notably, the SLP_TYP
6852 can be different, as per the values returned from the _Sx predefined
6855 Removed an extra register write within AcpiHwClearAcpiStatus. This
6857 was writing an optional PM1B status register twice. The existing call to
6859 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
6861 register. ACPICA BZ 751.
6863 Split out the PM1 Status registers from the FADT. Added new globals for
6865 registers (A/B), similar to the way the PM1 Enable registers are handled.
6866 Instead of overloading the FADT Event Register blocks. This makes the
6868 clearer and less prone to error.
6870 Fixed the warning message for when the platform contains too many ACPI
6872 for the default size of the global root table data structure. The
6874 for the truncation value was incorrect.
6876 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
6877 obsolete macro, since it is now a simple reference to ->common.type.
6879 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
6881 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
6882 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
6883 simply SLEEP_TYPE. ACPICA BZ 754.
6885 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
6886 function is only needed on 64-bit host operating systems and is thus not
6887 included for 32-bit hosts.
6889 Debug output: print the input and result for invocations of the _OSI
6891 control method via the ACPI_LV_INFO debug level. Also, reduced some of
6893 verbosity of this debug level. Len Brown.
6895 Example Code and Data Size: These are the sizes for the OS-independent
6896 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6897 debug version of the code includes the debug output trace mechanism and
6899 much larger code and data size.
6902 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6903 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6905 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6906 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6908 2) iASL Compiler/Disassembler and Tools:
6910 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
6911 various legal performance profiles.
6913 ----------------------------------------
6914 23 January 2009. Summary of changes for version 20090123:
6916 1) ACPI CA Core Subsystem:
6918 Added the 2009 copyright to all module headers and signons. This affects
6919 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6920 the tools/utilities.
6922 Implemented a change to allow the host to override any ACPI table,
6924 dynamically loaded tables. Previously, only the DSDT could be replaced by
6926 host. With this change, the AcpiOsTableOverride interface is called for
6928 table found in the RSDT/XSDT during ACPICA initialization, and also
6930 a table is dynamically loaded via the AML Load operator.
6932 Updated FADT flag definitions, especially the Boot Architecture flags.
6934 Debugger: For the Find command, automatically pad the input ACPI name
6936 underscores if the name is shorter than 4 characters. This enables a
6938 with the actual namespace entry which is itself padded with underscores.
6940 Example Code and Data Size: These are the sizes for the OS-independent
6941 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6942 debug version of the code includes the debug output trace mechanism and
6944 much larger code and data size.
6947 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6948 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6950 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6951 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6953 2) iASL Compiler/Disassembler and Tools:
6955 Fix build error under Bison-2.4.
6957 Dissasembler: Enhanced FADT support. Added decoding of the Boot
6959 flags. Now decode all flags, regardless of the FADT version. Flag output
6960 includes the FADT version which first defined each flag.
6962 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
6964 DSDT). Windows only.
6966 ----------------------------------------
6967 04 December 2008. Summary of changes for version 20081204:
6969 1) ACPI CA Core Subsystem:
6971 The ACPICA Programmer Reference has been completely updated and revamped
6973 this release. This includes updates to the external interfaces, OSL
6974 interfaces, the overview sections, and the debugger reference.
6976 Several new ACPICA interfaces have been implemented and documented in the
6977 programmer reference:
6978 AcpiReset - Writes the reset value to the FADT-defined reset register.
6979 AcpiDisableAllGpes - Disable all available GPEs.
6980 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
6981 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
6982 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
6983 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
6984 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
6986 Most of the public ACPI hardware-related interfaces have been moved to a
6988 file, components/hardware/hwxface.c
6990 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
6991 register lengths within the FADT are now used, and the low level ACPI
6992 register access no longer hardcodes the ACPI register lengths. Given that
6993 there may be some risk in actually trusting the FADT register lengths, a
6995 time option was added to fall back to the default hardcoded lengths if
6997 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
6998 option is set to true for now, and a warning is issued if a suspicious
7000 register length is overridden with the default value.
7002 Fixed a reference count issue in NsRepairObject. This problem was
7004 in version 20081031 as part of a fix to repair Buffer objects within
7007 Added semaphore support to the Linux/Unix application OS-services layer
7008 (OSL). ACPICA BZ 448. Lin Ming.
7010 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7012 be implemented in the OSL, or will binary semaphores be used instead.
7014 Example Code and Data Size: These are the sizes for the OS-independent
7015 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7016 debug version of the code includes the debug output trace mechanism and
7018 much larger code and data size.
7021 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7022 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7024 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7025 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7027 2) iASL Compiler/Disassembler and Tools:
7029 iASL: Completed the '-e' option to include additional ACPI tables in
7032 aid with disassembly and External statement generation. ACPICA BZ 742.
7036 iASL: Removed the "named object in while loop" error. The compiler cannot
7037 determine how many times a loop will execute. ACPICA BZ 730.
7039 Disassembler: Implemented support for FADT revision 2 (MS extension).
7043 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7046 ----------------------------------------
7047 31 October 2008. Summary of changes for version 20081031:
7049 1) ACPI CA Core Subsystem:
7051 Restructured the ACPICA header files into public/private. acpi.h now
7053 only the "public" acpica headers. All other acpica headers are "private"
7055 should not be included by acpica users. One new file, accommon.h is used
7057 include the commonly used private headers for acpica code generation.
7059 plans include moving all private headers to a new subdirectory.
7061 Implemented an automatic Buffer->String return value conversion for
7062 predefined ACPI methods. For these methods (such as _BIF), added
7064 conversion for return objects that are required to be a String, but a
7066 was found instead. This can happen when reading string battery data from
7068 operation region, because it used to be difficult to convert the data
7070 buffer to string from within the ASL. Ensures that the host OS is
7072 with a valid null-terminated string. Linux BZ 11822.
7074 Updated the FACS waking vector interfaces. Split
7075 AcpiSetFirmwareWakingVector
7076 into two: one for the 32-bit vector, another for the 64-bit vector. This
7078 required because the host OS must setup the wake much differently for
7080 vector (real vs. protected mode, etc.) and the interface itself should
7083 deciding which vector to use. Also, eliminated the
7084 GetFirmwareWakingVector
7085 interface, as it served no purpose (only the firmware reads the vector,
7087 only writes the vector.) ACPICA BZ 731.
7089 Implemented a mechanism to escape infinite AML While() loops. Added a
7091 counter to force exit from AML While loops if the count becomes too
7093 This can occur in poorly written AML when the hardware does not respond
7094 within a while loop and the loop does not implement a timeout. The
7096 loop count is configurable. A new exception code is returned when a loop
7098 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7100 Optimized the execution of AML While loops. Previously, a control state
7101 object was allocated and freed for each execution of the loop. The
7102 optimization is to simply reuse the control state for each iteration.
7104 speeds up the raw loop execution time by about 5%.
7106 Enhanced the implicit return mechanism. For Windows compatibility, return
7108 implicit integer of value zero for methods that contain no executable
7110 Such methods are seen in the field as stubs (presumably), and can cause
7111 drivers to fail if they expect a return value. Lin Ming.
7113 Allow multiple backslashes as root prefixes in namepaths. In a fully
7114 qualified namepath, allow multiple backslash prefixes. This can happen
7116 is seen in the field) because of the use of a double-backslash in strings
7117 (since backslash is the escape character) causing confusion. ACPICA BZ
7121 Emit a warning if two different FACS or DSDT tables are discovered in the
7122 FADT. Checks if there are two valid but different addresses for the FACS
7124 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7126 Consolidated the method argument count validation code. Merged the code
7128 validates control method argument counts into the predefined validation
7129 module. Eliminates possible multiple warnings for incorrect argument
7132 Implemented ACPICA example code. Includes code for ACPICA initialization,
7133 handler installation, and calling a control method. Available at
7134 source/tools/examples.
7136 Added a global pointer for FACS table to simplify internal FACS access.
7138 the global pointer instead of using AcpiGetTableByIndex for each FACS
7140 This simplifies the code for the Global Lock and the Firmware Waking
7143 Example Code and Data Size: These are the sizes for the OS-independent
7144 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7145 debug version of the code includes the debug output trace mechanism and
7147 much larger code and data size.
7150 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7151 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7153 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7154 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7156 2) iASL Compiler/Disassembler and Tools:
7158 iASL: Improved disassembly of external method calls. Added the -e option
7160 allow the inclusion of additional ACPI tables to help with the
7163 method invocations and the generation of external declarations during the
7164 disassembly. Certain external method invocations cannot be disassembled
7165 properly without the actual declaration of the method. Use the -e option
7167 include the table where the external method(s) are actually declared.
7169 useful for disassembling SSDTs that make method calls back to the master
7170 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
7172 -e dsdt.aml ssdt1.aml
7174 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
7175 problem where the use of an alias within a namepath would result in a not
7176 found error or cause the compiler to fault. Also now allows forward
7177 references from the Alias operator itself. ACPICA BZ 738.
7179 ----------------------------------------
7180 26 September 2008. Summary of changes for version 20080926:
7182 1) ACPI CA Core Subsystem:
7184 Designed and implemented a mechanism to validate predefined ACPI methods
7186 objects. This code validates the predefined ACPI objects (objects whose
7188 start with underscore) that appear in the namespace, at the time they are
7189 evaluated. The argument count and the type of the returned object are
7190 validated against the ACPI specification. The purpose of this validation
7192 to detect problems with the BIOS-implemented predefined ACPI objects
7194 the results are returned to the ACPI-related drivers. Future enhancements
7196 include actual repair of incorrect return objects where possible. Two new
7197 files are nspredef.c and acpredef.h.
7199 Fixed a fault in the AML parser if a memory allocation fails during the
7201 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
7203 Fixed an issue with implicit return compatibility. This change improves
7205 implicit return mechanism to be more compatible with the MS interpreter.
7207 Ming, ACPICA BZ 349.
7209 Implemented support for zero-length buffer-to-string conversions. Allow
7211 length strings during interpreter buffer-to-string conversions. For
7213 during the ToDecimalString and ToHexString operators, as well as implicit
7214 conversions. Fiodor Suietov, ACPICA BZ 585.
7216 Fixed two possible memory leaks in the error exit paths of
7217 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
7219 similar in that they use a stack of state objects in order to eliminate
7220 recursion. The stack must be fully unwound and deallocated if an error
7221 occurs. Lin Ming. ACPICA BZ 383.
7223 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
7225 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
7226 Moore ACPICA BZ 442.
7228 Removed the obsolete version number in module headers. Removed the
7229 "$Revision" number that appeared in each module header. This version
7231 was useful under SourceSafe and CVS, but has no meaning under git. It is
7233 only incorrect, it could also be misleading.
7235 Example Code and Data Size: These are the sizes for the OS-independent
7236 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7237 debug version of the code includes the debug output trace mechanism and
7239 much larger code and data size.
7242 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7243 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7245 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7246 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7248 ----------------------------------------
7249 29 August 2008. Summary of changes for version 20080829:
7251 1) ACPI CA Core Subsystem:
7253 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
7254 Reference. Changes include the elimination of cheating on the Object
7256 for the DdbHandle subtype, addition of a reference class field to
7257 differentiate the various reference types (instead of an AML opcode), and
7259 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
7261 Reduce an error to a warning for an incorrect method argument count.
7262 Previously aborted with an error if too few arguments were passed to a
7263 control method via the external ACPICA interface. Now issue a warning
7265 and continue. Handles the case where the method inadvertently declares
7267 many arguments, but does not actually use the extra ones. Applies mainly
7269 the predefined methods. Lin Ming. Linux BZ 11032.
7271 Disallow the evaluation of named object types with no intrinsic value.
7273 AE_TYPE for objects that have no value and therefore evaluation is
7275 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
7277 these types were allowed, but an exception would be generated at some
7279 during the evaluation. Now, the error is generated up front.
7281 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
7282 (nsnames.c). Fixes a leak in the error exit path.
7284 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
7286 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
7288 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
7291 Removed obsolete and/or unused exception codes from the acexcep.h header.
7292 There is the possibility that certain device drivers may be affected if
7294 use any of these exceptions.
7296 The ACPICA documentation has been added to the public git source tree,
7298 acpica/documents. Included are the ACPICA programmer reference, the iASL
7299 compiler reference, and the changes.txt release logfile.
7301 Example Code and Data Size: These are the sizes for the OS-independent
7302 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7303 debug version of the code includes the debug output trace mechanism and
7305 much larger code and data size.
7308 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7309 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7311 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7312 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7314 2) iASL Compiler/Disassembler and Tools:
7316 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
7317 defines _SCP with 3 arguments. Previous versions defined it with only 1
7318 argument. iASL now allows both definitions.
7320 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
7322 length subtables when disassembling ACPI tables. Also fixed a couple of
7323 errors where a full 16-bit table type field was not extracted from the
7327 acpisrc: Improve comment counting mechanism for generating source code
7328 statistics. Count first and last lines of multi-line comments as
7330 not comment lines. Handle Linux legal header in addition to standard
7334 ----------------------------------------
7336 29 July 2008. Summary of changes for version 20080729:
7338 1) ACPI CA Core Subsystem:
7340 Fix a possible deadlock in the GPE dispatch. Remove call to
7341 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
7343 to acquire the GPE lock but can deadlock since the GPE lock is already
7345 at dispatch time. This code was introduced in version 20060831 as a
7347 to Linux BZ 6881 and has since been removed from Linux.
7349 Add a function to dereference returned reference objects. Examines the
7351 object from a call to AcpiEvaluateObject. Any Index or RefOf references
7353 automatically dereferenced in an attempt to return something useful
7355 reference types cannot be converted into an external ACPI_OBJECT.)
7357 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
7359 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
7360 subtables for the MADT and one new subtable for the SRAT. Includes
7361 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
7363 Specification, June 2008.
7365 Additional error checking for pathname utilities. Add error check after
7367 calls to AcpiNsGetPathnameLength. Add status return from
7368 AcpiNsBuildExternalPath and check after all calls. Add parameter
7370 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
7372 Return status from the global init function AcpiUtGlobalInitialize. This
7374 used by both the kernel subsystem and the utilities such as iASL
7376 The function could possibly fail when the caches are initialized. Yang
7379 Add a function to decode reference object types to strings. Created for
7380 improved error messages.
7382 Improve object conversion error messages. Better error messages during
7384 conversion from internal to the external ACPI_OBJECT. Used for external
7386 to AcpiEvaluateObject.
7388 Example Code and Data Size: These are the sizes for the OS-independent
7389 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7390 debug version of the code includes the debug output trace mechanism and
7392 much larger code and data size.
7395 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7396 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7398 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7399 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7401 2) iASL Compiler/Disassembler and Tools:
7403 Debugger: fix a possible hang when evaluating non-methods. Fixes a
7405 introduced in version 20080701. If the object being evaluated (via
7407 command) is not a method, the debugger can hang while trying to obtain
7409 existent parameters.
7411 iASL: relax error for using reserved "_T_x" identifiers. These names can
7412 appear in a disassembled ASL file if they were emitted by the original
7413 compiler. Instead of issuing an error or warning and forcing the user to
7414 manually change these names, issue a remark instead.
7416 iASL: error if named object created in while loop. Emit an error if any
7418 object is created within a While loop. If allowed, this code will
7421 run-time error on the second iteration of the loop when an attempt is
7424 create the same named object twice. ACPICA bugzilla 730.
7426 iASL: Support absolute pathnames for include files. Add support for
7428 pathnames within the Include operator. previously, only relative
7432 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
7434 The ACPI spec requires one interrupt minimum. BZ 423
7436 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
7437 Handles the case for the Interrupt Resource Descriptor where
7438 the ResourceSource argument is omitted but ResourceSourceIndex
7439 is present. Now leave room for the Index. BZ 426
7441 iASL: Prevent error message if CondRefOf target does not exist. Fixes
7443 where an error message is emitted if the target does not exist. BZ 516
7445 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
7446 (get ACPI tables on Windows). This was apparently broken in version
7449 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
7451 the EOF happens immediately after the last table in the input file. Print
7452 completion message. Previously, no message was displayed in this case.
7454 ----------------------------------------
7455 01 July 2008. Summary of changes for version 20080701:
7457 0) Git source tree / acpica.org
7459 Fixed a problem where a git-clone from http would not transfer the entire
7462 1) ACPI CA Core Subsystem:
7464 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
7465 enable bit. Now performs a read-change-write of the enable register
7467 of simply writing out the cached enable mask. This will prevent
7469 enabling of GPEs if a rogue GPE is received during initialization (before
7471 handlers are installed.)
7473 Implemented a copy for dynamically loaded tables. Previously, dynamically
7474 loaded tables were simply mapped - but on some machines this memory is
7475 corrupted after suspend. Now copy the table to a local buffer. For the
7476 OpRegion case, added checksum verify. Use the table length from the table
7477 header, not the region length. For the Buffer case, use the table length
7478 also. Dennis Noordsij, Bob Moore. BZ 10734
7480 Fixed a problem where the same ACPI table could not be dynamically loaded
7482 unloaded more than once. Without this change, a table cannot be loaded
7484 once it has been loaded/unloaded one time. The current mechanism does not
7485 unregister a table upon an unload. During a load, if the same table is
7487 this no longer returns an exception. BZ 722
7489 Fixed a problem where the wrong descriptor length was calculated for the
7490 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
7492 are calculated as 12 bytes long, but the actual length in the internal
7493 descriptor is 16 because of the round-up to 8 on the 64-bit build.
7495 by Linn Crosetto. BZ 728
7497 Fixed a possible memory leak in the Unload operator. The DdbHandle
7499 by Load() did not have its reference count decremented during unload,
7501 to a memory leak. Lin Ming. BZ 727
7503 Fixed a possible memory leak when deleting thermal/processor objects. Any
7504 associated notify handlers (and objects) were not being deleted. Fiodor
7507 Fixed the ordering of the ASCII names in the global mutex table to match
7509 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
7511 Vegard Nossum. BZ 726
7513 Enhanced the AcpiGetObjectInfo interface to return the number of required
7514 arguments if the object is a control method. Added this call to the
7516 so the proper number of default arguments are passed to a method. This
7517 prevents a warning when executing methods from AcpiExec.
7519 Added a check for an invalid handle in AcpiGetObjectInfo. Return
7520 AE_BAD_PARAMETER if input handle is invalid. BZ 474
7522 Fixed an extraneous warning from exconfig.c on the 64-bit build.
7524 Example Code and Data Size: These are the sizes for the OS-independent
7525 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7526 debug version of the code includes the debug output trace mechanism and
7528 much larger code and data size.
7531 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7532 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7534 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7535 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7537 2) iASL Compiler/Disassembler and Tools:
7539 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
7540 resource descriptor names.
7542 iASL: Detect invalid ASCII characters in input (windows version). Removed
7544 "-CF" flag from the flex compile, enables correct detection of non-ASCII
7545 characters in the input. BZ 441
7547 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
7549 "result of operation not used" warning when the DDB handle returned from
7550 LoadTable is not used. The warning is not needed. BZ 590
7552 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
7555 pass address of table to the AML. Added option to disable OpRegion
7557 to allow creation of an OpRegion with a real address that was passed to
7559 All of this allows testing of the Load and Unload operators from
7562 Debugger: update tables command for unloaded tables. Handle unloaded
7564 and use the standard table header output routine.
7566 ----------------------------------------
7567 09 June 2008. Summary of changes for version 20080609:
7569 1) ACPI CA Core Subsystem:
7571 Implemented a workaround for reversed _PRT entries. A significant number
7573 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
7574 change dynamically detects and repairs this problem. Provides
7576 with MS ACPI. BZ 6859
7578 Simplified the internal ACPI hardware interfaces to eliminate the locking
7579 flag parameter from Register Read/Write. Added a new external interface,
7580 AcpiGetRegisterUnlocked.
7582 Fixed a problem where the invocation of a GPE control method could hang.
7584 was a regression introduced in 20080514. The new method argument count
7585 validation mechanism can enter an infinite loop when a GPE method is
7586 dispatched. Problem fixed by removing the obsolete code that passed GPE
7588 information to the notify handler via the control method parameter
7591 Fixed a problem where the _SST execution status was incorrectly returned
7593 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
7595 20080514. _SST is optional and a NOT_FOUND exception should never be
7598 Fixed a problem where a deleted object could be accessed from within the
7600 parser. This was a regression introduced in version 20080123 as a fix for
7602 Unload operator. Lin Ming. BZ 10669
7604 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
7606 and eliminated the use of a negative index in a loop. Operands are now
7607 displayed in the correct order, not backwards. This also fixes a
7609 introduced in 20080514 on 64-bit systems where the elimination of
7610 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
7613 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
7615 path did not delete a locally allocated structure.
7617 Updated definitions for the DMAR and SRAT tables to synchronize with the
7618 current specifications. Includes disassembler support.
7620 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
7621 loop termination value was used. Loop terminated on iteration early,
7623 one mutex. Linn Crosetto
7625 Example Code and Data Size: These are the sizes for the OS-independent
7626 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7627 debug version of the code includes the debug output trace mechanism and
7629 much larger code and data size.
7632 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7633 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7635 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7636 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7638 2) iASL Compiler/Disassembler and Tools:
7640 Disassembler: Implemented support for EisaId() within _CID objects. Now
7641 disassemble integer _CID objects back to EisaId invocations, including
7642 multiple integers within _CID packages. Includes single-step support for
7645 Disassembler: Added support for DMAR and SRAT table definition changes.
7647 ----------------------------------------
7648 14 May 2008. Summary of changes for version 20080514:
7650 1) ACPI CA Core Subsystem:
7652 Fixed a problem where GPEs were enabled too early during the ACPICA
7653 initialization. This could lead to "handler not installed" errors on some
7654 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
7656 ensures that all operation regions and devices throughout the namespace
7658 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
7660 Implemented a change to the enter sleep code. Moved execution of the _GTS
7661 method to just before setting sleep enable bit. The execution was moved
7663 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
7664 immediately before the SLP_EN bit is set, as per the ACPI specification.
7667 Implemented a fix to disable unknown GPEs (2nd version). Now always
7669 the GPE, even if ACPICA thinks that that it is already disabled. It is
7670 possible that the AML or some other code has enabled the GPE unbeknownst
7674 Fixed a problem with the Field operator where zero-length fields would
7676 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
7678 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
7680 Implemented a fix for the Load operator, now load the table at the
7682 root. This reverts a change introduced in version 20071019. The table is
7684 loaded at the namespace root even though this goes against the ACPI
7685 specification. This provides compatibility with other ACPI
7687 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
7690 Fixed a problem where ACPICA would not Load() tables with unusual
7692 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
7693 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
7694 Therefore, signature validation is worthless. Apparently MS ACPI accepts
7696 signatures, ACPICA must be compatible. BZ 10454.
7698 Fixed a possible negative array index in AcpiUtValidateException. Added
7700 fields to the exception string arrays to eliminate a -1 subtraction on
7704 Updated the debug tracking macros to reduce overall code and data size.
7705 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
7706 instead of pointers to static strings. Jan Beulich and Bob Moore.
7708 Implemented argument count checking in control method invocation via
7709 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
7711 many. This applies only to extern programmatic control method execution,
7713 method-to-method calls within the AML. Lin Ming.
7715 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
7717 longer needed, especially with the removal of 16-bit support. It was
7719 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
7722 32/64-bit platforms is required.
7724 Added the C const qualifier for appropriate string constants -- mostly
7725 MODULE_NAME and printf format strings. Jan Beulich.
7727 Example Code and Data Size: These are the sizes for the OS-independent
7728 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7729 debug version of the code includes the debug output trace mechanism and
7731 much larger code and data size.
7734 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7735 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7737 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7738 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7740 2) iASL Compiler/Disassembler and Tools:
7742 Implemented ACPI table revision ID validation in the disassembler. Zero
7744 always invalid. For DSDTs, the ID controls the interpreter integer width.
7746 means 32-bit and this is unusual. 2 or greater is 64-bit.
7748 ----------------------------------------
7749 21 March 2008. Summary of changes for version 20080321:
7751 1) ACPI CA Core Subsystem:
7753 Implemented an additional change to the GPE support in order to suppress
7754 spurious or stray GPEs. The AcpiEvDisableGpe function will now
7756 disable incoming GPEs that are neither enabled nor disabled -- meaning
7758 the GPE is unknown to the system. This should prevent future interrupt
7760 from that GPE. BZ 6217 (Zhang Rui)
7762 Fixed a problem where NULL package elements were not returned to the
7763 AcpiEvaluateObject interface correctly. The element was simply ignored
7764 instead of returning a NULL ACPI_OBJECT package element, potentially
7766 a buffer overflow and/or confusing the caller who expected a fixed number
7768 elements. BZ 10132 (Lin Ming, Bob Moore)
7770 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
7772 Qword), Field, BankField, and IndexField operators when invoked from
7774 an executing control method. In this case, these operators created
7776 nodes that were incorrectly left marked as permanent nodes instead of
7777 temporary nodes. This could cause a problem if there is race condition
7778 between an exiting control method and a running namespace walk. (Reported
7782 Fixed a problem where the CreateField and CreateXXXField operators would
7783 incorrectly allow duplicate names (the name of the field) with no
7787 Implemented several changes for Notify handling. Added support for new
7789 values (ACPI 2.0+) and improved the Notify debug output. Notify on
7790 PowerResource objects is no longer allowed, as per the ACPI
7792 (Bob Moore, Zhang Rui)
7794 All Reference Objects returned via the AcpiEvaluateObject interface are
7796 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
7798 NULL objects - either NULL package elements or unresolved named
7801 Fixed a problem where an extraneous debug message was produced for
7803 objects (when debugging enabled). The message "Package List length larger
7804 than NumElements count" is now produced in the correct case, and is now
7806 error message rather than a debug message. Added a debug message for the
7807 opposite case, where NumElements is larger than the Package List (the
7809 will be padded out with NULL elements as per the ACPI spec.)
7811 Implemented several improvements for the output of the ASL "Debug" object
7813 clarify and keep all data for a given object on one output line.
7815 Fixed two size calculation issues with the variable-length Start
7817 resource descriptor.
7819 Example Code and Data Size: These are the sizes for the OS-independent
7820 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7821 debug version of the code includes the debug output trace mechanism and
7823 a much larger code and data size.
7826 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7827 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7829 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7830 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7832 2) iASL Compiler/Disassembler and Tools:
7834 Fixed a problem with the use of the Switch operator where execution of
7836 containing method by multiple concurrent threads could cause an
7837 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
7838 actual Switch opcode, it must be simulated with local named temporary
7839 variables and if/else pairs. The solution chosen was to mark any method
7841 uses Switch as Serialized, thus preventing multiple thread entries. BZ
7844 ----------------------------------------
7845 13 February 2008. Summary of changes for version 20080213:
7847 1) ACPI CA Core Subsystem:
7849 Implemented another MS compatibility design change for GPE/Notify
7851 GPEs are now cleared/enabled asynchronously to allow all pending notifies
7853 complete first. It is expected that the OSL will queue the enable request
7854 behind all pending notify requests (may require changes to the local host
7856 in AcpiOsExecute). Alexey Starikovskiy.
7858 Fixed a problem where buffer and package objects passed as arguments to a
7859 control method via the external AcpiEvaluateObject interface could cause
7861 AE_AML_INTERNAL exception depending on the order and type of operators
7862 executed by the target control method.
7864 Fixed a problem where resource descriptor size optimization could cause a
7865 problem when a _CRS resource template is passed to a _SRS method. The
7867 resource template must use the same descriptors (with the same size) as
7868 returned from _CRS. This change affects the following resource
7870 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
7873 Fixed a problem where a CopyObject to RegionField, BankField, and
7875 objects did not perform an implicit conversion as it should. These types
7877 retain their initial type permanently as per the ACPI specification.
7879 a CopyObject to all other object types should not perform an implicit
7880 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
7882 Fixed a problem with the AcpiGetDevices interface where the mechanism to
7883 match device CIDs did not examine the entire list of available CIDs, but
7884 instead aborted on the first non-matching CID. Andrew Patterson.
7886 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
7888 inadvertently changed to return a 16-bit value instead of a 32-bit value,
7889 truncating the upper dword of a 64-bit value. This macro is only used to
7890 display debug output, so no incorrect calculations were made. Also,
7891 reimplemented the macro so that a 64-bit shift is not performed by
7892 inefficient compilers.
7894 Added missing va_end statements that should correspond with each va_start
7897 Example Code and Data Size: These are the sizes for the OS-independent
7898 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7899 debug version of the code includes the debug output trace mechanism and
7901 a much larger code and data size.
7904 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7905 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7907 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7908 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7910 2) iASL Compiler/Disassembler and Tools:
7912 Implemented full disassembler support for the following new ACPI tables:
7913 BERT, EINJ, and ERST. Implemented partial disassembler support for the
7914 complicated HEST table. These tables support the Windows Hardware Error
7915 Architecture (WHEA).
7917 ----------------------------------------
7918 23 January 2008. Summary of changes for version 20080123:
7920 1) ACPI CA Core Subsystem:
7922 Added the 2008 copyright to all module headers and signons. This affects
7923 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7924 the tools/utilities.
7926 Fixed a problem with the SizeOf operator when used with Package and
7928 objects. These objects have deferred execution for some arguments, and
7930 execution is now completed before the SizeOf is executed. This problem
7932 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
7936 Implemented an enhancement to the interpreter "slack mode". In the
7939 an explicit return or an implicitly returned object from the last
7941 opcode, a control method will now implicitly return an integer of value 0
7943 Microsoft compatibility. (Lin Ming) BZ 392
7945 Fixed a problem with the Load operator where an exception was not
7948 the case where the table is already loaded. (Lin Ming) BZ 463
7950 Implemented support for the use of DDBHandles as an Indexed Reference, as
7952 the ACPI spec. (Lin Ming) BZ 486
7954 Implemented support for UserTerm (Method invocation) for the Unload
7956 as per the ACPI spec. (Lin Ming) BZ 580
7958 Fixed a problem with the LoadTable operator where the OemId and
7960 input strings could cause unexpected failures if they were shorter than
7962 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
7964 Implemented support for UserTerm (Method invocation) for the Unload
7966 as per the ACPI spec. (Lin Ming) BZ 580
7968 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
7970 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
7972 Example Code and Data Size: These are the sizes for the OS-independent
7973 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7974 debug version of the code includes the debug output trace mechanism and
7976 a much larger code and data size.
7979 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7980 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7982 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7983 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7985 2) iASL Compiler/Disassembler and Tools:
7987 Implemented support in the disassembler for checksum validation on
7989 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
7991 header dump at the start of the disassembly.
7993 Implemented additional debugging information in the namespace listing
7995 created during compilation. In addition to the namespace hierarchy, the
7997 pathname to each namespace object is displayed.
7999 Fixed a problem with the disassembler where invalid ACPI tables could
8001 faults or infinite loops.
8003 Fixed an unexpected parse error when using the optional "parameter types"
8004 list in a control method declaration. (Lin Ming) BZ 397
8006 Fixed a problem where two External declarations with the same name did
8008 cause an error (Lin Ming) BZ 509
8010 Implemented support for full TermArgs (adding Argx, Localx and method
8011 invocation) for the ParameterData parameter to the LoadTable operator.
8015 ----------------------------------------
8016 19 December 2007. Summary of changes for version 20071219:
8018 1) ACPI CA Core Subsystem:
8020 Implemented full support for deferred execution for the TermArg string
8021 arguments for DataTableRegion. This enables forward references and full
8022 operand resolution for the three string arguments. Similar to
8024 deferred argument execution.) Lin Ming. BZ 430
8026 Implemented full argument resolution support for the BankValue argument
8028 BankField. Previously, only constants were supported, now any TermArg may
8030 used. Lin Ming BZ 387, 393
8032 Fixed a problem with AcpiGetDevices where the search of a branch of the
8033 device tree could be terminated prematurely. In accordance with the ACPI
8034 specification, the search down the current branch is terminated if a
8036 is both not present and not functional (instead of just not present.)
8040 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8042 the underlying AML code changed the GPE enable registers. Now, any
8044 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8046 instead of simply ignored. Rui Zhang.
8048 Fixed a problem with Index Fields where the Index register was
8050 limited to a maximum of 32 bits. Now any size may be used.
8052 Fixed a couple memory leaks associated with "implicit return" objects
8054 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8056 Example Code and Data Size: These are the sizes for the OS-independent
8057 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8058 debug version of the code includes the debug output trace mechanism and
8060 a much larger code and data size.
8063 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8064 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8066 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8067 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8069 ----------------------------------------
8070 14 November 2007. Summary of changes for version 20071114:
8072 1) ACPI CA Core Subsystem:
8074 Implemented event counters for each of the Fixed Events, the ACPI SCI
8075 (interrupt) itself, and control methods executed. Named
8076 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8078 should be useful for debugging and statistics.
8080 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8081 contents of the various event counters. Returns the current values for
8082 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8083 AcpiMethodCount. The interface can be expanded in the future if new
8085 are added. Device drivers should use this interface rather than access
8089 Fixed a problem with the FromBCD and ToBCD operators. With some
8091 the ShortDivide function worked incorrectly, causing problems with the
8093 functions with large input values. A truncation from 64-bit to 32-bit
8094 inadvertently occurred. Internal BZ 435. Lin Ming
8096 Fixed a problem with Index references passed as method arguments.
8098 passed as arguments to control methods were dereferenced immediately
8100 control was passed to the called method). The references are now
8102 passed directly to the called method. BZ 5389. Lin Ming
8104 Fixed a problem with CopyObject used in conjunction with the Index
8106 The reference was incorrectly dereferenced before the copy. The reference
8108 now correctly copied. BZ 5391. Lin Ming
8110 Fixed a problem with Control Method references within Package objects.
8112 references are now correctly generated. This completes the package
8113 construction overhaul that began in version 20071019.
8115 Example Code and Data Size: These are the sizes for the OS-independent
8116 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8117 debug version of the code includes the debug output trace mechanism and
8119 a much larger code and data size.
8122 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8123 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8125 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8126 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8129 2) iASL Compiler/Disassembler and Tools:
8131 The AcpiExec utility now installs handlers for all of the predefined
8132 Operation Region types. New types supported are: PCI_Config, CMOS, and
8135 Fixed a problem with the 64-bit version of AcpiExec where the extended
8137 bit) address fields for the DSDT and FACS within the FADT were not being
8138 used, causing truncation of the upper 32-bits of these addresses. Lin
8142 ----------------------------------------
8143 19 October 2007. Summary of changes for version 20071019:
8145 1) ACPI CA Core Subsystem:
8147 Fixed a problem with the Alias operator when the target of the alias is a
8148 named ASL operator that opens a new scope -- Scope, Device,
8150 Processor, and ThermalZone. In these cases, any children of the original
8151 operator could not be accessed via the alias, potentially causing
8153 AE_NOT_FOUND exceptions. (BZ 9067)
8155 Fixed a problem with the Package operator where all named references were
8156 created as object references and left otherwise unresolved. According to
8158 ACPI specification, a Package can only contain Data Objects or references
8160 control methods. The implication is that named references to Data Objects
8161 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
8162 immediately upon package creation. This is the approach taken with this
8163 change. References to all other named objects (Methods, Devices, Scopes,
8164 etc.) are all now properly created as reference objects. (BZ 5328)
8166 Reverted a change to Notify handling that was introduced in version
8167 20070508. This version changed the Notify handling from asynchronous to
8168 fully synchronous (Device driver Notify handling with respect to the
8170 ASL operator). It was found that this change caused more problems than it
8171 solved and was removed by most users.
8173 Fixed a problem with the Increment and Decrement operators where the type
8175 the target object could be unexpectedly and incorrectly changed. (BZ 353)
8178 Fixed a problem with the Load and LoadTable operators where the table
8179 location within the namespace was ignored. Instead, the table was always
8180 loaded into the root or current scope. Lin Ming.
8182 Fixed a problem with the Load operator when loading a table from a buffer
8183 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
8185 Fixed a problem with the Debug object where a store of a DdbHandle
8187 object to the Debug object could cause a fault.
8189 Added a table checksum verification for the Load operator, in the case
8191 the load is from a buffer. (BZ 578).
8193 Implemented additional parameter validation for the LoadTable operator.
8195 length of the input strings SignatureString, OemIdString, and OemTableId
8197 now checked for maximum lengths. (BZ 582) Lin Ming.
8199 Example Code and Data Size: These are the sizes for the OS-independent
8200 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8201 debug version of the code includes the debug output trace mechanism and
8203 a much larger code and data size.
8206 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8207 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8209 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8210 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8213 2) iASL Compiler/Disassembler:
8215 Fixed a problem where if a single file was specified and the file did not
8216 exist, no error message was emitted. (Introduced with wildcard support in
8219 ----------------------------------------
8220 19 September 2007. Summary of changes for version 20070919:
8222 1) ACPI CA Core Subsystem:
8224 Designed and implemented new external interfaces to install and remove
8225 handlers for ACPI table-related events. Current events that are defined
8227 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
8228 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
8229 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
8231 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
8232 (acpi_serialized option on Linux) could cause some systems to hang during
8233 initialization. (Bob Moore) BZ 8171
8235 Fixed a problem where objects of certain types (Device, ThermalZone,
8236 Processor, PowerResource) can be not found if they are declared and
8237 referenced from within the same control method (Lin Ming) BZ 341
8239 Example Code and Data Size: These are the sizes for the OS-independent
8240 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8241 debug version of the code includes the debug output trace mechanism and
8243 a much larger code and data size.
8246 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8247 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8249 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8250 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8253 2) iASL Compiler/Disassembler:
8255 Implemented support to allow multiple files to be compiled/disassembled
8258 single invocation. This includes command line wildcard support for both
8260 Windows and Unix versions of the compiler. This feature simplifies the
8261 disassembly and compilation of multiple ACPI tables in a single
8264 ----------------------------------------
8265 08 May 2007. Summary of changes for version 20070508:
8267 1) ACPI CA Core Subsystem:
8269 Implemented a Microsoft compatibility design change for the handling of
8271 Notify AML operator. Previously, notify handlers were dispatched and
8272 executed completely asynchronously in a deferred thread. The new design
8273 still executes the notify handlers in a different thread, but the
8275 thread that executed the Notify() now waits at a synchronization point
8277 the notify handler to complete. Some machines depend on a synchronous
8279 operator in order to operate correctly.
8281 Implemented support to allow Package objects to be passed as method
8282 arguments to the external AcpiEvaluateObject interface. Previously, this
8283 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
8284 implemented since there were no reserved control methods that required it
8287 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
8289 contained invalid non-zero values in reserved fields could cause later
8290 failures because these fields have meaning in later revisions of the
8292 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
8294 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
8296 Fixed a problem where the Global Lock handle was not properly updated if
8298 thread that acquired the Global Lock via executing AML code then
8300 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
8304 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
8305 could be corrupted if the interrupt being removed was at the head of the
8306 list. Reported by Linn Crosetto.
8308 Example Code and Data Size: These are the sizes for the OS-independent
8309 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8310 debug version of the code includes the debug output trace mechanism and
8312 a much larger code and data size.
8315 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8316 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8318 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8319 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8321 ----------------------------------------
8322 20 March 2007. Summary of changes for version 20070320:
8324 1) ACPI CA Core Subsystem:
8326 Implemented a change to the order of interpretation and evaluation of AML
8327 operand objects within the AML interpreter. The interpreter now evaluates
8328 operands in the order that they appear in the AML stream (and the
8329 corresponding ASL code), instead of in the reverse order (after the
8331 operand list has been parsed). The previous behavior caused several
8333 incompatibilities with the Microsoft AML interpreter as well as being
8334 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
8336 Implemented a change to the ACPI Global Lock support. All interfaces to
8338 global lock now allow the same thread to acquire the lock multiple times.
8339 This affects the AcpiAcquireGlobalLock external interface to the global
8341 as well as the internal use of the global lock to support AML fields -- a
8342 control method that is holding the global lock can now simultaneously
8344 AML fields that require global lock protection. Previously, in both
8346 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
8348 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
8349 Controller. There is no change to the behavior of the AML Acquire
8351 as this can already be used to acquire a mutex multiple times by the same
8352 thread. BZ 8066. With assistance from Alexey Starikovskiy.
8354 Fixed a problem where invalid objects could be referenced in the AML
8355 Interpreter after error conditions. During operand evaluation, ensure
8357 the internal "Return Object" field is cleared on error and only valid
8358 pointers are stored there. Caused occasional access to deleted objects
8360 resulted in "large reference count" warning messages. Valery Podrezov.
8362 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
8364 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
8367 Fixed an internal problem with the handling of result objects on the
8368 interpreter result stack. BZ 7872. Valery Podrezov.
8370 Removed obsolete code that handled the case where AML_NAME_OP is the
8372 of a reference (Reference.Opcode). This code was no longer necessary. BZ
8373 7874. Valery Podrezov.
8375 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
8378 remnant from the previously discontinued 16-bit support.
8380 Example Code and Data Size: These are the sizes for the OS-independent
8381 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8382 debug version of the code includes the debug output trace mechanism and
8384 a much larger code and data size.
8387 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8388 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8390 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8391 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8393 ----------------------------------------
8394 26 January 2007. Summary of changes for version 20070126:
8396 1) ACPI CA Core Subsystem:
8398 Added the 2007 copyright to all module headers and signons. This affects
8399 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8402 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
8403 during a table load. A bad pointer was passed in the case where the DSDT
8405 overridden, causing a fault in this case.
8407 Example Code and Data Size: These are the sizes for the OS-independent
8408 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8409 debug version of the code includes the debug output trace mechanism and
8411 a much larger code and data size.
8414 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8415 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8417 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8418 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8420 ----------------------------------------
8421 15 December 2006. Summary of changes for version 20061215:
8423 1) ACPI CA Core Subsystem:
8425 Support for 16-bit ACPICA has been completely removed since it is no
8427 necessary and it clutters the code. All 16-bit macros, types, and
8428 conditional compiles have been removed, cleaning up and simplifying the
8430 across the entire subsystem. DOS support is no longer needed since the
8431 bootable Linux firmware kit is now available.
8433 The handler for the Global Lock is now removed during AcpiTerminate to
8434 enable a clean subsystem restart, via the implementation of the
8435 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
8438 Implemented enhancements to the multithreading support within the
8440 to enable improved multithreading debugging and evaluation of the
8444 Debugger: Enhanced the Statistics/Memory command to emit the total
8446 memory used during the execution, as well as the maximum memory consumed
8448 each of the various object types. (Valery Podrezov)
8450 Example Code and Data Size: These are the sizes for the OS-independent
8451 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8452 debug version of the code includes the debug output trace mechanism and
8454 a much larger code and data size.
8457 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8458 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8460 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8461 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8464 2) iASL Compiler/Disassembler and Tools:
8466 AcpiExec: Implemented a new option (-m) to display full memory use
8467 statistics upon subsystem/program termination. (Valery Podrezov)
8469 ----------------------------------------
8470 09 November 2006. Summary of changes for version 20061109:
8472 1) ACPI CA Core Subsystem:
8474 Optimized the Load ASL operator in the case where the source operand is
8476 operation region. Simply map the operation region memory, instead of
8477 performing a bytewise read. (Region must be of type SystemMemory, see
8480 Fixed the Load ASL operator for the case where the source operand is a
8481 region field. A buffer object is also allowed as the source operand. BZ
8484 Fixed a problem where the Load ASL operator allowed the source operand to
8486 an operation region of any type. It is now restricted to regions of type
8487 SystemMemory, as per the ACPI specification. BZ 481
8489 Additional cleanup and optimizations for the new Table Manager code.
8491 AcpiEnable will now fail if all of the required ACPI tables are not
8493 (FADT, FACS, DSDT). BZ 477
8495 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
8497 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
8498 manually optimized to be aligned and will not work if it is byte-packed.
8500 Example Code and Data Size: These are the sizes for the OS-independent
8501 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8502 debug version of the code includes the debug output trace mechanism and
8504 a much larger code and data size.
8507 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8508 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8510 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8511 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8514 2) iASL Compiler/Disassembler and Tools:
8516 Fixed a problem where the presence of the _OSI predefined control method
8517 within complex expressions could cause an internal compiler error.
8519 AcpiExec: Implemented full region support for multiple address spaces.
8520 SpaceId is now part of the REGION object. BZ 429
8522 ----------------------------------------
8523 11 October 2006. Summary of changes for version 20061011:
8525 1) ACPI CA Core Subsystem:
8527 Completed an AML interpreter performance enhancement for control method
8528 execution. Previously a 2-pass parse/execution, control methods are now
8529 completely parsed and executed in a single pass. This improves overall
8530 interpreter performance by ~25%, reduces code size, and reduces CPU stack
8531 use. (Valery Podrezov + interpreter changes in version 20051202 that
8532 eliminated namespace loading during the pass one parse.)
8534 Implemented _CID support for PCI Root Bridge detection. If the _HID does
8536 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
8538 obtained and also checked for an ID match.
8540 Implemented additional support for the PCI _ADR execution: upsearch until
8542 device scope is found before executing _ADR. This allows PCI_Config
8543 operation regions to be declared locally within control methods
8547 Fixed a problem with a possible race condition between threads executing
8548 AcpiWalkNamespace and the AML interpreter. This condition was removed by
8549 modifying AcpiWalkNamespace to (by default) ignore all temporary
8551 entries created during any concurrent control method execution. An
8552 additional namespace race condition is known to exist between
8553 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
8556 Restructured the AML ParseLoop function, breaking it into several
8557 subfunctions in order to reduce CPU stack use and improve
8561 AcpiGetHandle: Fix for parameter validation to detect invalid
8563 of prefix handle and pathname. BZ 478
8565 Example Code and Data Size: These are the sizes for the OS-independent
8566 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8567 debug version of the code includes the debug output trace mechanism and
8569 a much larger code and data size.
8572 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8573 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8575 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8576 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8578 2) iASL Compiler/Disassembler and Tools:
8580 Ported the -g option (get local ACPI tables) to the new ACPICA Table
8582 to restore original behavior.
8584 ----------------------------------------
8585 27 September 2006. Summary of changes for version 20060927:
8587 1) ACPI CA Core Subsystem:
8589 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
8590 These functions now use a spinlock for mutual exclusion and the interrupt
8591 level indication flag is not needed.
8593 Fixed a problem with the Global Lock where the lock could appear to be
8594 obtained before it is actually obtained. The global lock semaphore was
8595 inadvertently created with one unit instead of zero units. (BZ 464)
8599 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
8601 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
8603 Example Code and Data Size: These are the sizes for the OS-independent
8604 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8605 debug version of the code includes the debug output trace mechanism and
8607 a much larger code and data size.
8610 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8611 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8613 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8614 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8617 2) iASL Compiler/Disassembler and Tools:
8619 Fixed a compilation problem with the pre-defined Resource Descriptor
8621 names where an "object does not exist" error could be incorrectly
8623 if the parent ResourceTemplate pathname places the template within a
8624 different namespace scope than the current scope. (BZ 7212)
8626 Fixed a problem where the compiler could hang after syntax errors
8628 in an ElseIf construct. (BZ 453)
8630 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
8631 operator. An incorrect output filename was produced when this parameter
8633 a null string (""). Now, the original input filename is used as the AML
8634 output filename, with an ".aml" extension.
8636 Implemented a generic batch command mode for the AcpiExec utility
8638 any AML debugger command) (Valery Podrezov).
8640 ----------------------------------------
8641 12 September 2006. Summary of changes for version 20060912:
8643 1) ACPI CA Core Subsystem:
8645 Enhanced the implementation of the "serialized mode" of the interpreter
8646 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
8647 specified, instead of creating a serialization semaphore per control
8649 the interpreter lock is simply no longer released before a blocking
8650 operation during control method execution. This effectively makes the AML
8651 Interpreter single-threaded. The overhead of a semaphore per-method is
8654 Fixed a regression where an error was no longer emitted if a control
8656 attempts to create 2 objects of the same name. This once again returns
8657 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
8659 will dynamically serialize the control method to possible prevent future
8662 Integrated a fix for a problem with PCI Express HID detection in the PCI
8663 Config Space setup procedure. (BZ 7145)
8665 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
8666 AcpiHwInitialize function - the FADT registers are now validated when the
8669 Added two new warnings during FADT verification - 1) if the FADT is
8671 than the largest known FADT version, and 2) if there is a mismatch
8674 32-bit block address and the 64-bit X counterpart (when both are non-
8677 Example Code and Data Size: These are the sizes for the OS-independent
8678 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8679 debug version of the code includes the debug output trace mechanism and
8681 a much larger code and data size.
8684 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8685 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8687 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8688 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8691 2) iASL Compiler/Disassembler and Tools:
8693 Fixed a problem with the implementation of the Switch() operator where
8695 temporary variable was declared too close to the actual Switch, instead
8697 at method level. This could cause a problem if the Switch() operator is
8698 within a while loop, causing an error on the second iteration. (BZ 460)
8700 Disassembler - fix for error emitted for unknown type for target of scope
8701 operator. Now, ignore it and continue.
8703 Disassembly of an FADT now verifies the input FADT and reports any errors
8704 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
8706 Disassembly of raw data buffers with byte initialization data now
8708 each output line with the current buffer offset.
8710 Disassembly of ASF! table now includes all variable-length data fields at
8711 the end of some of the subtables.
8713 The disassembler now emits a comment if a buffer appears to be a
8714 ResourceTemplate, but cannot be disassembled as such because the EndTag
8716 not appear at the very end of the buffer.
8718 AcpiExec - Added the "-t" command line option to enable the serialized
8720 of the AML interpreter.
8722 ----------------------------------------
8723 31 August 2006. Summary of changes for version 20060831:
8725 1) ACPI CA Core Subsystem:
8727 Miscellaneous fixes for the Table Manager:
8728 - Correctly initialize internal common FADT for all 64-bit "X" fields
8729 - Fixed a couple table mapping issues during table load
8730 - Fixed a couple alignment issues for IA64
8731 - Initialize input array to zero in AcpiInitializeTables
8732 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
8735 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
8737 immediately disabled to prevent the waking GPE from firing again and to
8738 prevent other wake GPEs from interrupting the wake process.
8740 Added the AcpiGpeCount global that tracks the number of processed GPEs,
8742 be used for debugging systems with a large number of ACPI interrupts.
8744 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
8745 both the ACPICA headers and the disassembler.
8747 Example Code and Data Size: These are the sizes for the OS-independent
8748 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8749 debug version of the code includes the debug output trace mechanism and
8751 a much larger code and data size.
8754 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8755 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8757 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8758 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8761 2) iASL Compiler/Disassembler and Tools:
8763 Disassembler support for the DMAR ACPI table.
8765 ----------------------------------------
8766 23 August 2006. Summary of changes for version 20060823:
8768 1) ACPI CA Core Subsystem:
8770 The Table Manager component has been completely redesigned and
8771 reimplemented. The new design is much simpler, and reduces the overall
8773 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
8775 now possible to obtain the ACPI tables very early during kernel
8776 initialization, even before dynamic memory management is initialized.
8777 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
8779 Obsolete ACPICA interfaces:
8781 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
8784 - AcpiLoadTable: Not needed.
8785 - AcpiUnloadTable: Not needed.
8787 New ACPICA interfaces:
8789 - AcpiInitializeTables: Must be called before the table manager can be
8791 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
8792 allocated memory after it becomes available.
8793 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
8797 Other ACPICA changes:
8799 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
8801 AcpiOsUnmapMemory to free this mapping.
8802 - AcpiGetTable returns the actual mapped table. The mapping is managed
8803 internally and must not be deleted by the caller. Use of this interface
8804 causes no additional dynamic memory allocation.
8805 - AcpiFindRootPointer: Support for physical addressing has been
8807 it appeared to be unused.
8808 - The interface to AcpiOsMapMemory has changed to be consistent with the
8809 other allocation interfaces.
8810 - The interface to AcpiOsGetRootPointer has changed to eliminate
8813 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
8815 bit platforms. Was previously 64 bits on all platforms.
8816 - The interface to the ACPI Global Lock acquire/release macros have
8818 slightly since ACPICA no longer keeps a local copy of the FACS with a
8819 constructed pointer to the actual global lock.
8821 Porting to the new table manager:
8823 - AcpiInitializeTables: Must be called once, and can be called anytime
8824 during the OS initialization process. It allows the host to specify an
8826 of memory to be used to store the internal version of the RSDT/XSDT (root
8827 table). This allows the host to access ACPI tables before memory
8829 is initialized and running.
8830 - AcpiReallocateRootTable: Can be called after memory management is
8832 to copy the root table to a dynamically allocated array, freeing up the
8833 scratch memory specified in the call to AcpiInitializeTables.
8834 - AcpiSubsystemInitialize: This existing interface is independent of the
8835 Table Manager, and does not have to be called before the Table Manager
8837 be used, it only must be called before the rest of ACPICA can be used.
8838 - ACPI Tables: Some changes have been made to the names and structure of
8840 actbl.h and actbl1.h header files and may require changes to existing
8842 For example, bitfields have been completely removed because of their lack
8844 portability across C compilers.
8845 - Update interfaces to the Global Lock acquire/release macros if local
8846 versions are used. (see acwin.h)
8848 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
8852 Example Code and Data Size: These are the sizes for the OS-independent
8853 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8854 debug version of the code includes the debug output trace mechanism and
8856 a much larger code and data size.
8859 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8860 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8862 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8863 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8866 2) iASL Compiler/Disassembler and Tools:
8868 No changes for this release.
8870 ----------------------------------------
8871 21 July 2006. Summary of changes for version 20060721:
8873 1) ACPI CA Core Subsystem:
8875 The full source code for the ASL test suite used to validate the iASL
8876 compiler and the ACPICA core subsystem is being released with the ACPICA
8877 source for the first time. The source is contained in a separate package
8879 consists of over 1100 files that exercise all ASL/AML operators. The
8881 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
8885 Completed a new design and implementation for support of the ACPI Global
8886 Lock. On the OS side, the global lock is now treated as a standard AML
8887 mutex. Previously, multiple OS threads could "acquire" the global lock
8888 simultaneously. However, this could cause the BIOS to be starved out of
8890 lock - especially in cases such as the Embedded Controller driver where
8891 there is a tight coupling between the OS and the BIOS.
8893 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
8894 The Global Lock interrupt handler no longer queues the execution of a
8895 separate thread to signal the global lock semaphore. Instead, the
8897 is signaled directly from the interrupt handler.
8899 Implemented support within the AML interpreter for package objects that
8900 contain a larger AML length (package list length) than the package
8902 count. In this case, the length of the package is truncated to match the
8903 package element count. Some BIOS code apparently modifies the package
8905 on the fly, and this change supports this behavior. Provides
8907 with the MS AML interpreter. (With assistance from Fiodor Suietov)
8909 Implemented a temporary fix for the BankValue parameter of a Bank Field
8911 support all constant values, now including the Zero and One opcodes.
8912 Evaluation of this parameter must eventually be converted to a full
8914 evaluation. A not-implemented error is now returned (temporarily) for
8916 constant values for this parameter.
8918 Fixed problem reports (Fiodor Suietov) integrated:
8919 - Fix for premature object deletion after CopyObject on Operation Region
8923 Example Code and Data Size: These are the sizes for the OS-independent
8924 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8925 debug version of the code includes the debug output trace mechanism and
8927 a much larger code and data size.
8930 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
8931 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
8933 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8934 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8937 2) iASL Compiler/Disassembler and Tools:
8939 No changes for this release.
8941 ----------------------------------------
8942 07 July 2006. Summary of changes for version 20060707:
8944 1) ACPI CA Core Subsystem:
8946 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
8947 that do not allow the initialization of address pointers within packed
8948 structures - even though the hardware itself may support misaligned
8949 transfers. Some of the debug data structures are packed by default to
8952 Added an error message for the case where AcpiOsGetThreadId() returns
8954 A non-zero value is required by the core ACPICA code to ensure the proper
8955 operation of AML mutexes and recursive control methods.
8957 The DSDT is now the only ACPI table that determines whether the AML
8958 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
8960 the hooks for per-table 32/64 switching have been removed from the code.
8962 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
8964 Fixed a possible leak of an OwnerID in the error path of
8965 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
8966 deletion to a single place in AcpiTbUninstallTable to correct possible
8968 when using the AcpiTbDeleteTablesByType interface (with assistance from
8971 Fixed a problem with Serialized control methods where the semaphore
8972 associated with the method could be over-signaled after multiple method
8975 Fixed two issues with the locking of the internal namespace data
8977 Both the Unload() operator and AcpiUnloadTable interface now lock the
8978 namespace during the namespace deletion associated with the table unload
8979 (with assistance from Linn Crosetto.)
8981 Fixed problem reports (Valery Podrezov) integrated:
8982 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
8984 Fixed problem reports (Fiodor Suietov) integrated:
8985 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
8986 - On Address Space handler deletion, needless deactivation call (BZ 374)
8987 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
8989 - Possible memory leak, Notify sub-objects of Processor, Power,
8992 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
8993 - Minimum Length of RSDT should be validated (BZ 379)
8994 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
8996 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9000 Example Code and Data Size: These are the sizes for the OS-independent
9001 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9002 debug version of the code includes the debug output trace mechanism and
9004 a much larger code and data size.
9007 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9008 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9010 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9011 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9014 2) iASL Compiler/Disassembler and Tools:
9016 Fixed problem reports:
9017 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9020 ----------------------------------------
9021 23 June 2006. Summary of changes for version 20060623:
9023 1) ACPI CA Core Subsystem:
9025 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9026 allows the type to be customized to the host OS for improved efficiency
9027 (since a spinlock is usually a very small object.)
9029 Implemented support for "ignored" bits in the ACPI registers. According
9031 the ACPI specification, these bits should be preserved when writing the
9032 registers via a read/modify/write cycle. There are 3 bits preserved in
9034 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9036 Implemented the initial deployment of new OSL mutex interfaces. Since
9038 host operating systems have separate mutex and semaphore objects, this
9039 feature was requested. The base code now uses mutexes (and the new mutex
9040 interfaces) wherever a binary semaphore was used previously. However, for
9041 the current release, the mutex interfaces are defined as macros to map
9043 to the existing semaphore interfaces. Therefore, no OSL changes are
9045 at this time. (See acpiosxf.h)
9047 Fixed several problems with the support for the control method SyncLevel
9048 parameter. The SyncLevel now works according to the ACPI specification
9050 in concert with the Mutex SyncLevel parameter, since the current
9052 is a property of the executing thread. Mutual exclusion for control
9054 is now implemented with a mutex instead of a semaphore.
9056 Fixed three instances of the use of the C shift operator in the bitfield
9057 support code (exfldio.c) to avoid the use of a shift value larger than
9059 target data width. The behavior of C compilers is undefined in this case
9061 can cause unpredictable results, and therefore the case must be detected
9063 avoided. (Fiodor Suietov)
9065 Added an info message whenever an SSDT or OEM table is loaded dynamically
9066 via the Load() or LoadTable() ASL operators. This should improve
9068 capability since it will show exactly what tables have been loaded
9070 the tables present in the RSDT/XSDT.)
9072 Example Code and Data Size: These are the sizes for the OS-independent
9073 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9074 debug version of the code includes the debug output trace mechanism and
9076 a much larger code and data size.
9079 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9080 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9082 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9083 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9086 2) iASL Compiler/Disassembler and Tools:
9088 No changes for this release.
9090 ----------------------------------------
9091 08 June 2006. Summary of changes for version 20060608:
9093 1) ACPI CA Core Subsystem:
9095 Converted the locking mutex used for the ACPI hardware to a spinlock.
9097 change should eliminate all problems caused by attempting to acquire a
9098 semaphore at interrupt level, and it means that all ACPICA external
9099 interfaces that directly access the ACPI hardware can be safely called
9101 interrupt level. OSL code that implements the semaphore interfaces should
9103 able to eliminate any workarounds for being called at interrupt level.
9105 Fixed a regression introduced in 20060526 where the ACPI device
9106 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9108 did not have an optional _INI method.
9110 Fixed an IndexField issue where a write to the Data Register should be
9111 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9115 Fixed problem reports (Valery Podrezov) integrated:
9116 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9118 Fixed problem reports (Fiodor Suietov) integrated:
9119 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9121 Removed four global mutexes that were obsolete and were no longer being
9124 Example Code and Data Size: These are the sizes for the OS-independent
9125 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9126 debug version of the code includes the debug output trace mechanism and
9128 a much larger code and data size.
9131 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9132 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9134 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9135 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9138 2) iASL Compiler/Disassembler and Tools:
9140 Fixed a fault when using -g option (get tables from registry) on Windows
9143 Fixed problem reports integrated:
9144 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9145 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9147 - Global table revision override (-r) is ignored (BZ 413)
9149 ----------------------------------------
9150 26 May 2006. Summary of changes for version 20060526:
9152 1) ACPI CA Core Subsystem:
9154 Restructured, flattened, and simplified the internal interfaces for
9155 namespace object evaluation - resulting in smaller code, less CPU stack
9157 and fewer interfaces. (With assistance from Mikhail Kouzmich)
9159 Fixed a problem with the CopyObject operator where the first parameter
9161 not typed correctly for the parser, interpreter, compiler, and
9163 Caused various errors and unexpected behavior.
9165 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
9166 produced incorrect results with some C compilers. Since the behavior of C
9167 compilers when the shift value is larger than the datatype width is
9168 apparently not well defined, the interpreter now detects this condition
9170 simply returns zero as expected in all such cases. (BZ 395)
9172 Fixed problem reports (Valery Podrezov) integrated:
9173 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
9174 - Allow interpreter to handle nested method declarations (BZ 5361)
9176 Fixed problem reports (Fiodor Suietov) integrated:
9177 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
9179 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
9181 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
9182 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
9183 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
9184 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
9185 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
9186 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
9187 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
9189 - Status of the Global Initialization Handler call not used (BZ 366)
9190 - Incorrect object parameter to Global Initialization Handler (BZ 367)
9192 Example Code and Data Size: These are the sizes for the OS-independent
9193 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9194 debug version of the code includes the debug output trace mechanism and
9196 a much larger code and data size.
9199 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9200 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9202 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9203 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9206 2) iASL Compiler/Disassembler and Tools:
9208 Modified the parser to allow the names IO, DMA, and IRQ to be used as
9209 namespace identifiers with no collision with existing resource descriptor
9210 macro names. This provides compatibility with other ASL compilers and is
9211 most useful for disassembly/recompilation of existing tables without
9213 errors. (With assistance from Thomas Renninger)
9215 Disassembler: fixed an incorrect disassembly problem with the
9216 DataTableRegion and CopyObject operators. Fixed a possible fault during
9217 disassembly of some Alias operators.
9219 ----------------------------------------
9220 12 May 2006. Summary of changes for version 20060512:
9222 1) ACPI CA Core Subsystem:
9224 Replaced the AcpiOsQueueForExecution interface with a new interface named
9225 AcpiOsExecute. The major difference is that the new interface does not
9227 a Priority parameter, this appeared to be useless and has been replaced
9230 Type parameter. The Type tells the host what type of execution is being
9231 requested, such as global lock handler, notify handler, GPE handler, etc.
9232 This allows the host to queue and execute the request as appropriate for
9234 request type, possibly using different work queues and different
9236 for the various request types. This enables fixes for multithreading
9237 deadlock problems such as BZ #5534, and will require changes to all
9239 OS interface layers. (Alexey Starikovskiy and Bob Moore)
9241 Fixed a possible memory leak associated with the support for the so-
9243 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
9246 Fixed a problem with the Load() operator where a table load from an
9247 operation region could overwrite an internal table buffer by up to 7
9249 and cause alignment faults on IPF systems. (With assistance from Luming
9252 Example Code and Data Size: These are the sizes for the OS-independent
9253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9254 debug version of the code includes the debug output trace mechanism and
9256 a much larger code and data size.
9259 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9260 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9262 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9263 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9267 2) iASL Compiler/Disassembler and Tools:
9269 Disassembler: Implemented support to cross reference the internal
9271 and automatically generate ASL External() statements for symbols not
9273 within the current table being disassembled. This will simplify the
9274 disassembly and recompilation of interdependent tables such as SSDTs
9276 these statements will no longer have to be added manually.
9278 Disassembler: Implemented experimental support to automatically detect
9279 invocations of external control methods and generate appropriate
9281 statements. This is problematic because the AML cannot be correctly
9283 until the number of arguments for each control method is known.
9285 standalone method invocations and invocations as the source operand of a
9286 Store() statement are supported.
9288 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
9289 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
9290 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
9291 more readable and likely closer to the original ASL source.
9293 ----------------------------------------
9294 21 April 2006. Summary of changes for version 20060421:
9296 1) ACPI CA Core Subsystem:
9298 Removed a device initialization optimization introduced in 20051216 where
9299 the _STA method was not run unless an _INI was also present for the same
9300 device. This optimization could cause problems because it could allow
9302 methods to be run within a not-present device subtree. (If a not-present
9303 device had no _INI, _STA would not be run, the not-present status would
9305 be discovered, and the children of the device would be incorrectly
9308 Implemented a new _STA optimization where namespace subtrees that do not
9309 contain _INI are identified and ignored during device initialization.
9310 Selectively running _STA can significantly improve boot time on large
9311 machines (with assistance from Len Brown.)
9313 Implemented support for the device initialization case where the returned
9314 _STA flags indicate a device not-present but functioning. In this case,
9316 is not run, but the device children are examined for presence, as per the
9319 Implemented an additional change to the IndexField support in order to
9320 conform to MS behavior. The value written to the Index Register is not
9321 simply a byte offset, it is a byte offset in units of the access width of
9322 the parent Index Field. (Fiodor Suietov)
9324 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
9325 interface is called during the creation of all AML operation regions, and
9326 allows the host OS to exert control over what addresses it will allow the
9327 AML code to access. Operation Regions whose addresses are disallowed will
9328 cause a runtime exception when they are actually accessed (will not
9330 or abort table loading.) See oswinxf or osunixxf for an example
9333 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
9334 interface allows the host OS to match the various "optional"
9335 interface/behavior strings for the _OSI predefined control method as
9336 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
9337 for an example implementation.
9339 Restructured and corrected various problems in the exception handling
9341 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
9342 (with assistance from Takayoshi Kochi.)
9344 Modified the Linux source converter to ignore quoted string literals
9346 converting identifiers from mixed to lower case. This will correct
9348 with the disassembler and other areas where such strings must not be
9351 The ACPI_FUNCTION_* macros no longer require quotes around the function
9352 name. This allows the Linux source converter to convert the names, now
9354 the converter ignores quoted strings.
9356 Example Code and Data Size: These are the sizes for the OS-independent
9357 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9358 debug version of the code includes the debug output trace mechanism and
9360 a much larger code and data size.
9364 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9365 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9367 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9368 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9371 2) iASL Compiler/Disassembler and Tools:
9373 Implemented 3 new warnings for iASL, and implemented multiple warning
9377 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
9379 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
9380 check for the possible timeout, a warning is issued.
9382 2) Useless operators: If an ASL operator does not specify an optional
9384 operand and it also does not use the function return value from the
9385 operator, a warning is issued since the operator effectively does
9388 3) Unreferenced objects: If a namespace object is created, but never
9389 referenced, a warning is issued. This is a warning level 2 since there
9391 cases where this is ok, such as when a secondary table is loaded that
9393 the unreferenced objects. Even so, care is taken to only flag objects
9395 don't look like they will ever be used. For example, the reserved methods
9396 (starting with an underscore) are usually not referenced because it is
9397 expected that the OS will invoke them.
9399 ----------------------------------------
9400 31 March 2006. Summary of changes for version 20060331:
9402 1) ACPI CA Core Subsystem:
9404 Implemented header file support for the following additional ACPI tables:
9405 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
9407 all current and known ACPI tables are now defined in the ACPICA headers
9409 are available for use by device drivers and other software.
9411 Implemented support to allow tables that contain ACPI names with invalid
9412 characters to be loaded. Previously, this would cause the table load to
9413 fail, but since there are several known cases of such tables on existing
9414 machines, this change was made to enable ACPI support for them. Also,
9416 matches the behavior of the Microsoft ACPI implementation.
9418 Fixed a couple regressions introduced during the memory optimization in
9420 20060317 release. The namespace node definition required additional
9421 reorganization and an internal datatype that had been changed to 8-bit
9423 restored to 32-bit. (Valery Podrezov)
9425 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
9426 could be passed through to AcpiOsReleaseObject which is unexpected. Such
9427 null pointers are now trapped and ignored, matching the behavior of the
9428 previous implementation before the deployment of AcpiOsReleaseObject.
9429 (Valery Podrezov, Fiodor Suietov)
9431 Fixed a memory mapping leak during the deletion of a SystemMemory
9433 region where a cached memory mapping was not deleted. This became a
9434 noticeable problem for operation regions that are defined within
9436 used control methods. (Dana Meyers)
9438 Reorganized the ACPI table header files into two main files: one for the
9439 ACPI tables consumed by the ACPICA core, and another for the
9441 ACPI tables that are consumed by the drivers and other software. The
9443 FADT definitions were merged into one common section and three different
9444 tables (ACPI 1.0, 1.0+, and 2.0)
9446 Example Code and Data Size: These are the sizes for the OS-independent
9447 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9448 debug version of the code includes the debug output trace mechanism and
9450 a much larger code and data size.
9453 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9454 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9456 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9457 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9460 2) iASL Compiler/Disassembler and Tools:
9462 Disassembler: Implemented support to decode and format all non-AML ACPI
9463 tables (tables other than DSDTs and SSDTs.) This includes the new tables
9464 added to the ACPICA headers, therefore all current and known ACPI tables
9468 Disassembler: The change to allow ACPI names with invalid characters also
9469 enables the disassembly of such tables. Invalid characters within names
9471 changed to '*' to make the name printable; the iASL compiler will still
9472 generate an error for such names, however, since this is an invalid ACPI
9475 Implemented an option for AcpiXtract (-a) to extract all tables found in
9477 input file. The default invocation extracts only the DSDTs and SSDTs.
9479 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
9480 makefile for the AcpiXtract utility.
9482 ----------------------------------------
9483 17 March 2006. Summary of changes for version 20060317:
9485 1) ACPI CA Core Subsystem:
9487 Implemented the use of a cache object for all internal namespace nodes.
9488 Since there are about 1000 static nodes in a typical system, this will
9489 decrease memory use for cache implementations that minimize per-
9491 overhead (such as a slab allocator.)
9493 Removed the reference count mechanism for internal namespace nodes, since
9495 was deemed unnecessary. This reduces the size of each namespace node by
9496 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
9498 and 32 bytes for the 64-bit case.
9500 Optimized several internal data structures to reduce object size on 64-
9502 platforms by packing data within the 64-bit alignment. This includes the
9503 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
9504 instances corresponding to the namespace objects.
9506 Added two new strings for the predefined _OSI method: "Windows 2001.1
9510 Split the allocation tracking mechanism out to a separate file, from
9511 utalloc.c to uttrack.c. This mechanism appears to be only useful for
9512 application-level code. Kernels may wish to not include uttrack.c in
9515 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
9517 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
9520 Code and Data Size: These are the sizes for the acpica.lib produced by
9522 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9524 driver or OSPM code. The debug version of the code includes the debug
9526 trace mechanism and has a much larger code and data size. Note that these
9527 values will vary depending on the efficiency of the compiler and the
9528 compiler options used during generation.
9531 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9532 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9534 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9535 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9538 2) iASL Compiler/Disassembler and Tools:
9540 Implemented an ANSI C version of the acpixtract utility. This version
9542 automatically extract the DSDT and all SSDTs from the input acpidump text
9543 file and dump the binary output to separate files. It can also display a
9544 summary of the input file including the headers for each table found and
9545 will extract any single ACPI table, with any signature. (See
9546 source/tools/acpixtract)
9548 ----------------------------------------
9549 10 March 2006. Summary of changes for version 20060310:
9551 1) ACPI CA Core Subsystem:
9553 Tagged all external interfaces to the subsystem with the new
9554 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
9556 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
9557 macro. The default definition is NULL.
9559 Added the ACPI_THREAD_ID type for the return value from
9561 This allows the host to define this as necessary to simplify kernel
9562 integration. The default definition is ACPI_NATIVE_UINT.
9564 Fixed two interpreter problems related to error processing, the deletion
9566 objects, and placing invalid pointers onto the internal operator result
9567 stack. BZ 6028, 6151 (Valery Podrezov)
9569 Increased the reference count threshold where a warning is emitted for
9571 reference counts in order to eliminate unnecessary warnings on systems
9573 large namespaces (especially 64-bit.) Increased the value from 0x400 to
9576 Due to universal disagreement as to the meaning of the 'c' in the
9578 function, the ACPI_MEM_CALLOCATE macro has been renamed to
9579 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
9580 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
9583 Code and Data Size: These are the sizes for the acpica.lib produced by
9585 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9587 driver or OSPM code. The debug version of the code includes the debug
9589 trace mechanism and has a much larger code and data size. Note that these
9590 values will vary depending on the efficiency of the compiler and the
9591 compiler options used during generation.
9594 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9595 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9597 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9598 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9601 2) iASL Compiler/Disassembler:
9603 Disassembler: implemented support for symbolic resource descriptor
9604 references. If a CreateXxxxField operator references a fixed offset
9607 resource descriptor, a name is assigned to the descriptor and the offset
9609 translated to the appropriate resource tag and pathname. The addition of
9610 this support brings the disassembled code very close to the original ASL
9611 source code and helps eliminate run-time errors when the disassembled
9613 is modified (and recompiled) in such a way as to invalidate the original
9616 Implemented support for a Descriptor Name as the last parameter to the
9618 Register() macro. This parameter was inadvertently left out of the ACPI
9619 specification, and will be added for ACPI 3.0b.
9621 Fixed a problem where the use of the "_OSI" string (versus the full path
9622 "\_OSI") caused an internal compiler error. ("No back ptr to op")
9624 Fixed a problem with the error message that occurs when an invalid string
9626 used for a _HID object (such as one with an embedded asterisk:
9628 The correct message is now displayed.
9630 ----------------------------------------
9631 17 February 2006. Summary of changes for version 20060217:
9633 1) ACPI CA Core Subsystem:
9635 Implemented a change to the IndexField support to match the behavior of
9637 Microsoft AML interpreter. The value written to the Index register is now
9639 byte offset, no longer an index based upon the width of the Data
9641 This should fix IndexField problems seen on some machines where the Data
9642 register is not exactly one byte wide. The ACPI specification will be
9643 clarified on this point.
9645 Fixed a problem where several resource descriptor types could overrun the
9646 internal descriptor buffer due to size miscalculation: VendorShort,
9647 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
9648 affect all platforms.
9650 Fixed a problem where individual resource descriptors were misaligned
9652 the internal buffer, causing alignment faults on IA64 platforms.
9654 Code and Data Size: These are the sizes for the acpica.lib produced by
9656 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9658 driver or OSPM code. The debug version of the code includes the debug
9660 trace mechanism and has a much larger code and data size. Note that these
9661 values will vary depending on the efficiency of the compiler and the
9662 compiler options used during generation.
9665 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9666 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9668 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9669 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9672 2) iASL Compiler/Disassembler:
9674 Implemented support for new reserved names: _WDG and _WED are Microsoft
9675 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
9676 defined method (Throttling Depth Limit.)
9678 Fixed a problem where a zero-length VendorShort or VendorLong resource
9679 descriptor was incorrectly emitted as a descriptor of length one.
9681 ----------------------------------------
9682 10 February 2006. Summary of changes for version 20060210:
9684 1) ACPI CA Core Subsystem:
9686 Removed a couple of extraneous ACPI_ERROR messages that appeared during
9687 normal execution. These became apparent after the conversion from
9690 Fixed a problem where the CreateField operator could hang if the BitIndex
9692 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
9694 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
9695 failed with an exception. This also fixes a couple of related RefOf and
9696 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
9698 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
9700 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
9704 Implemented a memory cleanup at the end of the execution of each
9706 of an AML While() loop, preventing the accumulation of outstanding
9708 (Valery Podrezov, BZ 5427)
9710 Eliminated a chunk of duplicate code in the object resolution code.
9714 Fixed several warnings during the 64-bit code generation.
9716 The AcpiSrc source code conversion tool now inserts one line of
9718 after an if() statement that is followed immediately by a comment,
9720 readability of the Linux code.
9722 Code and Data Size: The current and previous library sizes for the core
9723 subsystem are shown below. These are the code and data sizes for the
9724 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9726 values do not include any ACPI driver or OSPM code. The debug version of
9728 code includes the debug output trace mechanism and has a much larger code
9729 and data size. Note that these values will vary depending on the
9731 of the compiler and the compiler options used during generation.
9734 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9735 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9737 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9738 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9741 2) iASL Compiler/Disassembler:
9743 Fixed a problem with the disassembly of a BankField operator with a
9745 expression for the BankValue parameter.
9747 ----------------------------------------
9748 27 January 2006. Summary of changes for version 20060127:
9750 1) ACPI CA Core Subsystem:
9752 Implemented support in the Resource Manager to allow unresolved
9754 references within resource package objects for the _PRT method. This
9756 is in addition to the previously implemented unresolved reference support
9757 within the AML parser. If the interpreter slack mode is enabled, these
9758 unresolved references will be passed through to the caller as a NULL
9762 Implemented and deployed new macros and functions for error and warning
9763 messages across the subsystem. These macros are simpler and generate less
9764 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
9765 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
9766 macros remain defined to allow ACPI drivers time to migrate to the new
9769 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
9771 Acquire/Release Lock OSL interfaces.
9773 Fixed a problem where Alias ASL operators are sometimes not correctly
9774 resolved, in both the interpreter and the iASL compiler.
9776 Fixed several problems with the implementation of the
9777 ConcatenateResTemplate
9778 ASL operator. As per the ACPI specification, zero length buffers are now
9779 treated as a single EndTag. One-length buffers always cause a fatal
9780 exception. Non-zero length buffers that do not end with a full 2-byte
9782 cause a fatal exception.
9784 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
9785 interface. (With assistance from Thomas Renninger)
9787 Code and Data Size: The current and previous library sizes for the core
9788 subsystem are shown below. These are the code and data sizes for the
9789 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9791 values do not include any ACPI driver or OSPM code. The debug version of
9793 code includes the debug output trace mechanism and has a much larger code
9794 and data size. Note that these values will vary depending on the
9796 of the compiler and the compiler options used during generation.
9799 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9800 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9802 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9803 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9806 2) iASL Compiler/Disassembler:
9808 Fixed an internal error that was generated for any forward references to
9812 ----------------------------------------
9813 13 January 2006. Summary of changes for version 20060113:
9815 1) ACPI CA Core Subsystem:
9817 Added 2006 copyright to all module headers and signons. This affects
9818 virtually every file in the ACPICA core subsystem, iASL compiler, and the
9821 Enhanced the ACPICA error reporting in order to simplify user migration
9823 the non-debug version of ACPICA. Replaced all instances of the
9824 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
9826 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
9827 respectively. This preserves all error and warning messages in the non-
9829 version of the ACPICA code (this has been referred to as the "debug lite"
9830 option.) Over 200 cases were converted to create a total of over 380
9831 error/warning messages across the ACPICA code. This increases the code
9833 data size of the default non-debug version of the code somewhat (about
9835 but all error/warning reporting may be disabled if desired (and code
9836 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
9837 configuration option. The size of the debug version of ACPICA remains
9841 Fixed a memory leak within the AML Debugger "Set" command. One object was
9842 not properly deleted for every successful invocation of the command.
9844 Code and Data Size: The current and previous library sizes for the core
9845 subsystem are shown below. These are the code and data sizes for the
9846 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9848 values do not include any ACPI driver or OSPM code. The debug version of
9850 code includes the debug output trace mechanism and has a much larger code
9851 and data size. Note that these values will vary depending on the
9853 of the compiler and the compiler options used during generation.
9856 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9857 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9859 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9860 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9863 2) iASL Compiler/Disassembler:
9865 The compiler now officially supports the ACPI 3.0a specification that was
9866 released on December 30, 2005. (Specification is available at
9869 ----------------------------------------
9870 16 December 2005. Summary of changes for version 20051216:
9872 1) ACPI CA Core Subsystem:
9874 Implemented optional support to allow unresolved names within ASL Package
9875 objects. A null object is inserted in the package when a named reference
9876 cannot be located in the current namespace. Enabled via the interpreter
9877 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
9879 that contain such code.
9881 Implemented an optimization to the initialization sequence that can
9883 boot time. During ACPI device initialization, the _STA method is now run
9885 and only if the _INI method exists. The _STA method is used to determine
9887 the device is present; An _INI can only be run if _STA returns present,
9889 it is a waste of time to run the _STA method if the _INI does not exist.
9890 (Prototype and assistance from Dong Wei)
9892 Implemented use of the C99 uintptr_t for the pointer casting macros if it
9894 available in the current compiler. Otherwise, the default (void *) cast
9898 Fixed some possible memory leaks found within the execution path of the
9899 Break, Continue, If, and CreateField operators. (Valery Podrezov)
9901 Fixed a problem introduced in the 20051202 release where an exception is
9902 generated during method execution if a control method attempts to declare
9905 Moved resource descriptor string constants that are used by both the AML
9906 disassembler and AML debugger to the common utilities directory so that
9907 these components are independent.
9909 Implemented support in the AcpiExec utility (-e switch) to globally
9911 exceptions during control method execution (method is not aborted.)
9913 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
9916 Code and Data Size: The current and previous library sizes for the core
9917 subsystem are shown below. These are the code and data sizes for the
9918 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9920 values do not include any ACPI driver or OSPM code. The debug version of
9922 code includes the debug output trace mechanism and has a much larger code
9923 and data size. Note that these values will vary depending on the
9925 of the compiler and the compiler options used during generation.
9928 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9929 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9931 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9932 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9935 2) iASL Compiler/Disassembler:
9937 Fixed a problem where a CPU stack overflow fault could occur if a
9939 method call was made from within a Return statement.
9941 ----------------------------------------
9942 02 December 2005. Summary of changes for version 20051202:
9944 1) ACPI CA Core Subsystem:
9946 Modified the parsing of control methods to no longer create namespace
9947 objects during the first pass of the parse. Objects are now created only
9948 during the execute phase, at the moment the namespace creation operator
9950 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
9952 should eliminate ALREADY_EXISTS exceptions seen on some machines where
9953 reentrant control methods are protected by an AML mutex. The mutex will
9955 correctly block multiple threads from attempting to create the same
9959 Increased the number of available Owner Ids for namespace object tracking
9960 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
9962 some machines with a large number of ACPI tables (either static or
9965 Fixed a problem with the AcpiExec utility where a fault could occur when
9967 -b switch (batch mode) is used.
9969 Enhanced the namespace dump routine to output the owner ID for each
9972 Code and Data Size: The current and previous library sizes for the core
9973 subsystem are shown below. These are the code and data sizes for the
9974 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9976 values do not include any ACPI driver or OSPM code. The debug version of
9978 code includes the debug output trace mechanism and has a much larger code
9979 and data size. Note that these values will vary depending on the
9981 of the compiler and the compiler options used during generation.
9984 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9985 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9987 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9988 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9991 2) iASL Compiler/Disassembler:
9993 Fixed a parse error during compilation of certain Switch/Case constructs.
9995 simplify the parse, the grammar now allows for multiple Default
9997 and this error is now detected and flagged during the analysis phase.
9999 Disassembler: The disassembly now includes the contents of the original
10000 table header within a comment at the start of the file. This includes the
10001 name and version of the original ASL compiler.
10003 ----------------------------------------
10004 17 November 2005. Summary of changes for version 20051117:
10006 1) ACPI CA Core Subsystem:
10008 Fixed a problem in the AML parser where the method thread count could be
10009 decremented below zero if any errors occurred during the method parse
10011 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10013 This also fixed a related regression with the mechanism that detects and
10014 corrects methods that cannot properly handle reentrancy (related to the
10015 deployment of the new OwnerId mechanism.)
10017 Eliminated the pre-parsing of control methods (to detect errors) during
10018 table load. Related to the problem above, this was causing unwind issues
10020 any errors occurred during the parse, and it seemed to be overkill. A
10022 load should not be aborted if there are problems with any single control
10023 method, thus rendering this feature rather pointless.
10025 Fixed a problem with the new table-driven resource manager where an
10027 buffer overflow could occur for small resource templates.
10029 Implemented a new external interface, AcpiGetVendorResource. This
10031 will find and return a vendor-defined resource descriptor within a _CRS
10033 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10036 Removed the length limit (200) on string objects as per the upcoming ACPI
10037 3.0A specification. This affects the following areas of the interpreter:
10039 any implicit conversion of a Buffer to a String, 2) a String object
10041 of the ASL Concatentate operator, 3) the String object result of the ASL
10044 Fixed a problem in the Windows OS interface layer (OSL) where a
10046 on a semaphore object would incorrectly timeout. This allows the
10047 multithreading features of the AcpiExec utility to work properly under
10050 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10051 the recently added file named "utresrc.c".
10053 Code and Data Size: The current and previous library sizes for the core
10054 subsystem are shown below. These are the code and data sizes for the
10055 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10057 values do not include any ACPI driver or OSPM code. The debug version of
10059 code includes the debug output trace mechanism and has a much larger code
10060 and data size. Note that these values will vary depending on the
10062 of the compiler and the compiler options used during generation.
10065 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10066 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10068 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10069 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10072 2) iASL Compiler/Disassembler:
10074 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10075 specification. For the iASL compiler, this means that string literals
10077 the source ASL can be of any length.
10079 Enhanced the listing output to dump the AML code for resource descriptors
10080 immediately after the ASL code for each descriptor, instead of in a block
10082 the end of the entire resource template.
10084 Enhanced the compiler debug output to dump the entire original parse tree
10085 constructed during the parse phase, before any transforms are applied to
10087 tree. The transformed tree is dumped also.
10089 ----------------------------------------
10090 02 November 2005. Summary of changes for version 20051102:
10092 1) ACPI CA Core Subsystem:
10094 Modified the subsystem initialization sequence to improve GPE support.
10096 GPE initialization has been split into two parts in order to defer
10098 of the _PRW methods (Power Resources for Wake) until after the hardware
10100 fully initialized and the SCI handler is installed. This allows the _PRW
10101 methods to access fields protected by the Global Lock. This will fix
10103 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10105 Converted the ACPI internal object disassemble and display code within
10107 AML debugger to fully table-driven operation, reducing code size and
10108 increasing maintainability.
10110 Fixed a regression with the ConcatenateResTemplate() ASL operator
10112 in the 20051021 release.
10114 Implemented support for "local" internal ACPI object types within the
10115 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10116 These local types include RegionFields, BankFields, IndexFields, Alias,
10120 Moved common AML resource handling code into a new file, "utresrc.c".
10122 code is shared by both the Resource Manager and the AML Debugger.
10124 Code and Data Size: The current and previous library sizes for the core
10125 subsystem are shown below. These are the code and data sizes for the
10126 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10128 values do not include any ACPI driver or OSPM code. The debug version of
10130 code includes the debug output trace mechanism and has a much larger code
10131 and data size. Note that these values will vary depending on the
10133 of the compiler and the compiler options used during generation.
10136 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10137 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10139 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10140 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10143 2) iASL Compiler/Disassembler:
10145 Fixed a problem with very large initializer lists (more than 4000
10147 for both Buffer and Package objects where the parse stack could overflow.
10149 Enhanced the pre-compile source code scan for non-ASCII characters to
10151 characters within comment fields. The scan is now always performed and is
10153 longer optional, detecting invalid characters within a source file
10154 immediately rather than during the parse phase or later.
10156 Enhanced the ASL grammar definition to force early reductions on all
10158 style grammar elements so that the overall parse stack usage is greatly
10159 reduced. This should improve performance and reduce the possibility of
10163 Eliminated all reduce/reduce conflicts in the iASL parser generation.
10165 with the addition of a %expected statement, the compiler generates from
10166 source with no warnings.
10168 Fixed a possible segment fault in the disassembler if the input filename
10169 does not contain a "dot" extension (Thomas Renninger).
10171 ----------------------------------------
10172 21 October 2005. Summary of changes for version 20051021:
10174 1) ACPI CA Core Subsystem:
10176 Implemented support for the EM64T and other x86-64 processors. This
10177 essentially entails recognizing that these processors support non-aligned
10178 memory transfers. Previously, all 64-bit processors were assumed to lack
10179 hardware support for non-aligned transfers.
10181 Completed conversion of the Resource Manager to nearly full table-driven
10182 operation. Specifically, the resource conversion code (convert AML to
10183 internal format and the reverse) and the debug code to dump internal
10184 resource descriptors are fully table-driven, reducing code and data size
10186 improving maintainability.
10188 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
10190 on 64-bit processors instead of a fixed 32-bit word. (With assistance
10192 Alexey Starikovskiy)
10194 Implemented support within the resource conversion code for the Type-
10195 Specific byte within the various ACPI 3.0 *WordSpace macros.
10197 Fixed some issues within the resource conversion code for the type-
10199 flags for both Memory and I/O address resource descriptors. For Memory,
10200 implemented support for the MTP and TTP flags. For I/O, split the TRS and
10201 TTP flags into two separate fields.
10203 Code and Data Size: The current and previous library sizes for the core
10204 subsystem are shown below. These are the code and data sizes for the
10205 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10207 values do not include any ACPI driver or OSPM code. The debug version of
10209 code includes the debug output trace mechanism and has a much larger code
10210 and data size. Note that these values will vary depending on the
10212 of the compiler and the compiler options used during generation.
10215 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10216 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10218 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10219 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10223 2) iASL Compiler/Disassembler:
10225 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
10227 corresponding ResourceSource string was not also present in a resource
10228 descriptor declaration. This restriction caused problems with existing
10229 AML/ASL code that includes the Index byte without the string. When such
10231 was disassembled, it could not be compiled without modification. Further,
10232 the modified code created a resource template with a different size than
10234 original, breaking code that used fixed offsets into the resource
10238 Removed a recent feature of the disassembler to ignore a lone
10240 byte. This byte is now emitted if present so that the exact AML can be
10241 reproduced when the disassembled code is recompiled.
10243 Improved comments and text alignment for the resource descriptor code
10244 emitted by the disassembler.
10246 Implemented disassembler support for the ACPI 3.0 AccessSize field within
10248 Register() resource descriptor.
10250 ----------------------------------------
10251 30 September 2005. Summary of changes for version 20050930:
10253 1) ACPI CA Core Subsystem:
10255 Completed a major overhaul of the Resource Manager code - specifically,
10256 optimizations in the area of the AML/internal resource conversion code.
10258 code has been optimized to simplify and eliminate duplicated code, CPU
10260 use has been decreased by optimizing function parameters and local
10261 variables, and naming conventions across the manager have been
10263 for clarity and ease of maintenance (this includes function, parameter,
10264 variable, and struct/typedef names.) The update may force changes in some
10265 driver code, depending on how resources are handled by the host OS.
10267 All Resource Manager dispatch and information tables have been moved to a
10268 single location for clarity and ease of maintenance. One new file was
10269 created, named "rsinfo.c".
10271 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
10272 guarantee that the argument is not evaluated twice, making them less
10274 to macro side-effects. However, since there exists the possibility of
10275 additional stack use if a particular compiler cannot optimize them (such
10277 in the debug generation case), the original macros are optionally
10279 Note that some invocations of the return_VALUE macro may now cause size
10280 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
10282 eliminate these. (From Randy Dunlap)
10284 Implemented a new mechanism to enable debug tracing for individual
10286 methods. A new external interface, AcpiDebugTrace, is provided to enable
10287 this mechanism. The intent is to allow the host OS to easily enable and
10288 disable tracing for problematic control methods. This interface can be
10289 easily exposed to a user or debugger interface if desired. See the file
10290 psxface.c for details.
10292 AcpiUtCallocate will now return a valid pointer if a length of zero is
10293 specified - a length of one is used and a warning is issued. This matches
10294 the behavior of AcpiUtAllocate.
10296 Code and Data Size: The current and previous library sizes for the core
10297 subsystem are shown below. These are the code and data sizes for the
10298 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10300 values do not include any ACPI driver or OSPM code. The debug version of
10302 code includes the debug output trace mechanism and has a much larger code
10303 and data size. Note that these values will vary depending on the
10305 of the compiler and the compiler options used during generation.
10308 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10309 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10311 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10312 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10315 2) iASL Compiler/Disassembler:
10317 A remark is issued if the effective compile-time length of a package or
10318 buffer is zero. Previously, this was a warning.
10320 ----------------------------------------
10321 16 September 2005. Summary of changes for version 20050916:
10323 1) ACPI CA Core Subsystem:
10325 Fixed a problem within the Resource Manager where support for the Generic
10326 Register descriptor was not fully implemented. This descriptor is now
10328 recognized, parsed, disassembled, and displayed.
10330 Completely restructured the Resource Manager code to utilize table-driven
10331 dispatch and lookup, eliminating many of the large switch() statements.
10333 reduces overall subsystem code size and code complexity. Affects the
10334 resource parsing and construction, disassembly, and debug dump output.
10336 Cleaned up and restructured the debug dump output for all resource
10337 descriptors. Improved readability of the output and reduced code size.
10339 Fixed a problem where changes to internal data structures caused the
10340 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
10342 Code and Data Size: The current and previous library sizes for the core
10343 subsystem are shown below. These are the code and data sizes for the
10344 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10346 values do not include any ACPI driver or OSPM code. The debug version of
10348 code includes the debug output trace mechanism and has a much larger code
10349 and data size. Note that these values will vary depending on the
10351 of the compiler and the compiler options used during generation.
10354 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10355 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10357 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10358 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10361 2) iASL Compiler/Disassembler:
10363 Updated the disassembler to automatically insert an EndDependentFn()
10365 into the ASL stream if this macro is missing in the original AML code,
10366 simplifying compilation of the resulting ASL module.
10368 Fixed a problem in the disassembler where a disassembled ResourceSource
10369 string (within a large resource descriptor) was not surrounded by quotes
10371 not followed by a comma, causing errors when the resulting ASL module was
10372 compiled. Also, escape sequences within a ResourceSource string are now
10373 handled correctly (especially "\\")
10375 ----------------------------------------
10376 02 September 2005. Summary of changes for version 20050902:
10378 1) ACPI CA Core Subsystem:
10380 Fixed a problem with the internal Owner ID allocation and deallocation
10381 mechanisms for control method execution and recursive method invocation.
10382 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
10383 messages seen on some systems. Recursive method invocation depth is
10384 currently limited to 255. (Alexey Starikovskiy)
10386 Completely eliminated all vestiges of support for the "module-level
10387 executable code" until this support is fully implemented and debugged.
10389 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
10390 some systems that invoke this support.
10392 Fixed a problem within the resource manager code where the transaction
10394 for a 64-bit address descriptor were handled incorrectly in the type-
10395 specific flag byte.
10397 Consolidated duplicate code within the address descriptor resource
10399 code, reducing overall subsystem code size.
10401 Fixed a fault when using the AML debugger "disassemble" command to
10402 disassemble individual control methods.
10404 Removed references to the "release_current" directory within the Unix
10407 Code and Data Size: The current and previous core subsystem library sizes
10408 are shown below. These are the code and data sizes for the acpica.lib
10409 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
10410 include any ACPI driver or OSPM code. The debug version of the code
10412 the debug output trace mechanism and has a much larger code and data
10414 Note that these values will vary depending on the efficiency of the
10416 and the compiler options used during generation.
10419 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10420 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10422 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10423 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10426 2) iASL Compiler/Disassembler:
10428 Implemented an error check for illegal duplicate values in the interrupt
10430 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
10433 Implemented error checking for the Irq() and IrqNoFlags() macros to
10435 too many values in the interrupt list (16 max) and invalid values in the
10436 list (range 0 - 15)
10438 The maximum length string literal within an ASL file is now restricted to
10439 200 characters as per the ACPI specification.
10441 Fixed a fault when using the -ln option (generate namespace listing).
10443 Implemented an error check to determine if a DescriptorName within a
10444 resource descriptor has already been used within the current scope.
10446 ----------------------------------------
10447 15 August 2005. Summary of changes for version 20050815:
10449 1) ACPI CA Core Subsystem:
10451 Implemented a full bytewise compare to determine if a table load request
10453 attempting to load a duplicate table. The compare is performed if the
10455 signatures and table lengths match. This will allow different tables with
10456 the same OEM Table ID and revision to be loaded - probably against the
10458 specification, but discovered in the field nonetheless.
10460 Added the changes.txt logfile to each of the zipped release packages.
10462 Code and Data Size: Current and previous core subsystem library sizes are
10463 shown below. These are the code and data sizes for the acpica.lib
10465 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10466 any ACPI driver or OSPM code. The debug version of the code includes the
10467 debug output trace mechanism and has a much larger code and data size.
10469 that these values will vary depending on the efficiency of the compiler
10471 the compiler options used during generation.
10474 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10475 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10477 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10478 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10481 2) iASL Compiler/Disassembler:
10483 Fixed a problem where incorrect AML code could be generated for Package
10484 objects if optimization is disabled (via the -oa switch).
10486 Fixed a problem with where incorrect AML code is generated for variable-
10487 length packages when the package length is not specified and the number
10489 initializer values is greater than 255.
10492 ----------------------------------------
10493 29 July 2005. Summary of changes for version 20050729:
10495 1) ACPI CA Core Subsystem:
10497 Implemented support to ignore an attempt to install/load a particular
10499 table more than once. Apparently there exists BIOS code that repeatedly
10500 attempts to load the same SSDT upon certain events. With assistance from
10501 Venkatesh Pallipadi.
10503 Restructured the main interface to the AML parser in order to correctly
10504 handle all exceptional conditions. This will prevent leakage of the
10506 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
10508 machines. With assistance from Alexey Starikovskiy.
10510 Support for "module level code" has been disabled in this version due to
10512 number of issues that have appeared on various machines. The support can
10514 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
10515 compilation. When the issues are fully resolved, the code will be enabled
10519 Modified the internal functions for debug print support to define the
10520 FunctionName parameter as a (const char *) for compatibility with
10522 built-in macros such as __FUNCTION__, etc.
10524 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
10526 Implemented support to display an object count summary for the AML
10528 commands Object and Methods.
10530 Code and Data Size: Current and previous core subsystem library sizes are
10531 shown below. These are the code and data sizes for the acpica.lib
10533 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10534 any ACPI driver or OSPM code. The debug version of the code includes the
10535 debug output trace mechanism and has a much larger code and data size.
10537 that these values will vary depending on the efficiency of the compiler
10539 the compiler options used during generation.
10542 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10543 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10545 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10546 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10549 2) iASL Compiler/Disassembler:
10551 Fixed a regression that appeared in the 20050708 version of the compiler
10552 where an error message was inadvertently emitted for invocations of the
10554 reserved control method.
10556 ----------------------------------------
10557 08 July 2005. Summary of changes for version 20050708:
10559 1) ACPI CA Core Subsystem:
10561 The use of the CPU stack in the debug version of the subsystem has been
10562 considerably reduced. Previously, a debug structure was declared in every
10563 function that used the debug macros. This structure has been removed in
10564 favor of declaring the individual elements as parameters to the debug
10565 functions. This reduces the cumulative stack use during nested execution
10567 ACPI function calls at the cost of a small increase in the code size of
10569 debug version of the subsystem. With assistance from Alexey Starikovskiy
10573 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
10574 headers to define a macro that will return the current function name at
10575 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
10577 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
10578 compiler-dependent header, the function name is saved on the CPU stack
10580 pointer per function.) This mechanism is used because apparently there
10581 exists no standard ANSI-C defined macro that that returns the function
10584 Redesigned and reimplemented the "Owner ID" mechanism used to track
10585 namespace objects created/deleted by ACPI tables and control method
10586 execution. A bitmap is now used to allocate and free the IDs, thus
10588 the wraparound problem present in the previous implementation. The size
10590 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
10593 Removed the UINT32_BIT and UINT16_BIT types that were used for the
10595 flag definitions within the headers for the predefined ACPI tables. These
10596 have been replaced by UINT8_BIT in order to increase the code portability
10598 the subsystem. If the use of UINT8 remains a problem, we may be forced to
10599 eliminate bitfields entirely because of a lack of portability.
10601 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
10603 is a frequently used function and this improvement increases the
10605 of the entire subsystem (Alexey Starikovskiy).
10607 Fixed several possible memory leaks and the inverse - premature object
10608 deletion (Alexey Starikovskiy).
10610 Code and Data Size: Current and previous core subsystem library sizes are
10611 shown below. These are the code and data sizes for the acpica.lib
10613 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10614 any ACPI driver or OSPM code. The debug version of the code includes the
10615 debug output trace mechanism and has a much larger code and data size.
10617 that these values will vary depending on the efficiency of the compiler
10619 the compiler options used during generation.
10622 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10623 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10625 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10626 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10628 ----------------------------------------
10629 24 June 2005. Summary of changes for version 20050624:
10631 1) ACPI CA Core Subsystem:
10633 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
10634 the host-defined cache object. This allows the OSL implementation to
10636 and type this object in any manner desired, simplifying the OSL
10637 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
10638 Linux, and should be defined in the OS-specific header file for other
10639 operating systems as required.
10641 Changed the interface to AcpiOsAcquireObject to directly return the
10642 requested object as the function return (instead of ACPI_STATUS.) This
10643 change was made for performance reasons, since this is the purpose of the
10644 interface in the first place. AcpiOsAcquireObject is now similar to the
10645 AcpiOsAllocate interface.
10647 Implemented a new AML debugger command named Businfo. This command
10649 information about all devices that have an associate _PRT object. The
10651 _HID, _UID, and _CID are displayed for these devices.
10653 Modified the initialization sequence in AcpiInitializeSubsystem to call
10655 OSL interface AcpiOslInitialize first, before any local initialization.
10657 change was required because the global initialization now calls OSL
10660 Enhanced the Dump command to display the entire contents of Package
10662 (including all sub-objects and their values.)
10664 Restructured the code base to split some files because of size and/or
10665 because the code logically belonged in a separate file. New files are
10667 below. All makefiles and project files included in the ACPI CA release
10670 utilities/utcache.c /* Local cache interfaces */
10671 utilities/utmutex.c /* Local mutex support */
10672 utilities/utstate.c /* State object support */
10673 interpreter/parser/psloop.c /* Main AML parse loop */
10675 Code and Data Size: Current and previous core subsystem library sizes are
10676 shown below. These are the code and data sizes for the acpica.lib
10678 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10679 any ACPI driver or OSPM code. The debug version of the code includes the
10680 debug output trace mechanism and has a much larger code and data size.
10682 that these values will vary depending on the efficiency of the compiler
10684 the compiler options used during generation.
10687 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10688 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10690 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10691 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10694 2) iASL Compiler/Disassembler:
10696 Fixed a regression introduced in version 20050513 where the use of a
10698 object within a Case() statement caused a compile time exception. The
10699 original behavior has been restored (a Match() operator is emitted.)
10701 ----------------------------------------
10702 17 June 2005. Summary of changes for version 20050617:
10704 1) ACPI CA Core Subsystem:
10706 Moved the object cache operations into the OS interface layer (OSL) to
10708 the host OS to handle these operations if desired (for example, the Linux
10709 OSL will invoke the slab allocator). This support is optional; the
10711 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
10713 code in the ACPI CA core. The new OSL interfaces are shown below. See
10714 utalloc.c for an example implementation, and acpiosxf.h for the exact
10715 interface definitions. With assistance from Alexey Starikovskiy.
10719 AcpiOsAcquireObject
10720 AcpiOsReleaseObject
10722 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
10724 and restore a flags parameter. This fits better with many OS lock models.
10725 Note: the current execution state (interrupt handler or not) is no longer
10726 passed to these interfaces. If necessary, the OSL must determine this
10728 by itself, a simple and fast operation. With assistance from Alexey
10731 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
10732 present if the revision of the RSDP was 2 or greater. According to the
10734 specification, the XSDT is optional in all cases, and the table manager
10735 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
10736 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
10740 Fixed an interpreter problem with the Mid() operator in the case of an
10742 string where the resulting output string is of zero length. It now
10744 returns a valid, null terminated string object instead of a string object
10745 with a null pointer.
10747 Fixed a problem with the control method argument handling to allow a
10749 to an Arg object that already contains an object of type Device. The
10751 object is now correctly overwritten. Previously, an error was returned.
10754 Enhanced the debugger Find command to emit object values in addition to
10756 found object pathnames. The output format is the same as the dump
10760 Enhanced the debugger Set command. It now has the ability to set the
10762 of any Named integer object in the namespace (Previously, only method
10764 and args could be set.)
10766 Code and Data Size: Current and previous core subsystem library sizes are
10767 shown below. These are the code and data sizes for the acpica.lib
10769 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10770 any ACPI driver or OSPM code. The debug version of the code includes the
10771 debug output trace mechanism and has a much larger code and data size.
10773 that these values will vary depending on the efficiency of the compiler
10775 the compiler options used during generation.
10778 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10779 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10781 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10782 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10785 2) iASL Compiler/Disassembler:
10787 Fixed a regression in the disassembler where if/else/while constructs
10789 output incorrectly. This problem was introduced in the previous release
10790 (20050526). This problem also affected the single-step disassembly in the
10793 Fixed a problem where compiling the reserved _OSI method would randomly
10795 rarely) produce compile errors.
10797 Enhanced the disassembler to emit compilable code in the face of
10799 AML resource descriptors. If the optional ResourceSourceIndex is present,
10800 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
10801 disassembly. Otherwise, the resulting code cannot be compiled without
10804 ----------------------------------------
10805 26 May 2005. Summary of changes for version 20050526:
10807 1) ACPI CA Core Subsystem:
10809 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
10810 the module level (not within a control method.) These opcodes are
10812 exactly once at the time the table is loaded. This type of code was legal
10814 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
10816 order to provide backwards compatibility with earlier BIOS
10818 This eliminates the "Encountered executable code at module level" warning
10819 that was previously generated upon detection of such code.
10821 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
10822 inadvertently be generated during the lookup of namespace objects in the
10823 second pass parse of ACPI tables and control methods. It appears that
10825 problem could occur during the resolution of forward references to
10829 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
10830 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
10831 allows the deadlock detection debug code to be compiled out in the normal
10832 case, improving mutex performance (and overall subsystem performance)
10835 Implemented a handful of miscellaneous fixes for possible memory leaks on
10836 error conditions and error handling control paths. These fixes were
10837 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
10839 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
10841 to prevent a fault in this error case.
10843 Code and Data Size: Current and previous core subsystem library sizes are
10844 shown below. These are the code and data sizes for the acpica.lib
10846 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10847 any ACPI driver or OSPM code. The debug version of the code includes the
10848 debug output trace mechanism and has a much larger code and data size.
10850 that these values will vary depending on the efficiency of the compiler
10852 the compiler options used during generation.
10855 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10856 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10858 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10859 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10862 2) iASL Compiler/Disassembler:
10864 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
10865 the module level (not within a control method.) These operators will be
10866 executed once at the time the table is loaded. This type of code was
10868 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
10869 compiler in order to provide backwards compatibility with earlier BIOS
10873 The ACPI integer width (specified via the table revision ID or the -r
10874 override, 32 or 64 bits) is now used internally during compile-time
10876 folding to ensure that constants are truncated to 32 bits if necessary.
10877 Previously, the revision ID value was only emitted in the AML table
10880 An error message is now generated for the Mutex and Method operators if
10882 SyncLevel parameter is outside the legal range of 0 through 15.
10884 Fixed a problem with the Method operator ParameterTypes list handling
10886 3.0). Previously, more than 2 types or 2 arguments generated a syntax
10888 The actual underlying implementation of method argument typechecking is
10889 still under development, however.
10891 ----------------------------------------
10892 13 May 2005. Summary of changes for version 20050513:
10894 1) ACPI CA Core Subsystem:
10896 Implemented support for PCI Express root bridges -- added support for
10898 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
10900 The interpreter now automatically truncates incoming 64-bit constants to
10902 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
10904 also affects the iASL compiler constant folding. (Note: as per below, the
10905 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
10907 Fixed a problem where string and buffer objects with "static" pointers
10908 (pointers to initialization data within an ACPI table) were not handled
10909 consistently. The internal object copy operation now always copies the
10911 to a newly allocated buffer, regardless of whether the source object is
10914 Fixed a problem with the FromBCD operator where an implicit result
10915 conversion was improperly performed while storing the result to the
10917 operand. Since this is an "explicit conversion" operator, the implicit
10918 conversion should never be performed on the output.
10920 Fixed a problem with the CopyObject operator where a copy to an existing
10921 named object did not always completely overwrite the existing object
10923 at name. Specifically, a buffer-to-buffer copy did not delete the
10927 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
10929 structs for consistency.
10931 Code and Data Size: Current and previous core subsystem library sizes are
10932 shown below. These are the code and data sizes for the acpica.lib
10934 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10935 any ACPI driver or OSPM code. The debug version of the code includes the
10936 debug output trace mechanism and has a much larger code and data size.
10938 that these values will vary depending on the efficiency of the compiler
10940 the compiler options used during generation.
10943 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10944 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10945 Current Release: (Same sizes)
10946 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10947 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10950 2) iASL Compiler/Disassembler:
10952 The compiler now emits a warning if an attempt is made to generate a 64-
10954 integer constant from within a 32-bit ACPI table (Revision < 2). The
10956 is truncated to 32 bits.
10958 Fixed a problem with large package objects: if the static length of the
10959 package is greater than 255, the "variable length package" opcode is
10960 emitted. Previously, this caused an error. This requires an update to the
10961 ACPI spec, since it currently (incorrectly) states that packages larger
10963 255 elements are not allowed.
10965 The disassembler now correctly handles variable length packages and
10967 larger than 255 elements.
10969 ----------------------------------------
10970 08 April 2005. Summary of changes for version 20050408:
10972 1) ACPI CA Core Subsystem:
10974 Fixed three cases in the interpreter where an "index" argument to an ASL
10975 function was still (internally) 32 bits instead of the required 64 bits.
10976 This was the Index argument to the Index, Mid, and Match operators.
10978 The "strupr" function is now permanently local (AcpiUtStrupr), since this
10980 not a POSIX-defined function and not present in most kernel-level C
10981 libraries. All references to the C library strupr function have been
10985 Completed the deployment of static functions/prototypes. All prototypes
10987 the static attribute have been moved from the headers to the owning C
10990 Implemented an extract option (-e) for the AcpiBin utility (AML binary
10991 utility). This option allows the utility to extract individual ACPI
10993 from the output of AcpiDmp. It provides the same functionality of the
10994 acpixtract.pl perl script without the worry of setting the correct perl
10995 options. AcpiBin runs on Windows and has not yet been generated/validated
10997 the Linux/Unix environment (but should be soon).
10999 Updated and fixed the table dump option for AcpiBin (-d). This option
11000 converts a single ACPI table to a hex/ascii file, similar to the output
11004 Code and Data Size: Current and previous core subsystem library sizes are
11005 shown below. These are the code and data sizes for the acpica.lib
11007 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11008 any ACPI driver or OSPM code. The debug version of the code includes the
11009 debug output trace mechanism and has a much larger code and data size.
11011 that these values will vary depending on the efficiency of the compiler
11013 the compiler options used during generation.
11016 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11017 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11019 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11020 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11023 2) iASL Compiler/Disassembler:
11025 Disassembler fix: Added a check to ensure that the table length found in
11027 ACPI table header within the input file is not longer than the actual
11029 file size. This indicates some kind of file or table corruption.
11031 ----------------------------------------
11032 29 March 2005. Summary of changes for version 20050329:
11034 1) ACPI CA Core Subsystem:
11036 An error is now generated if an attempt is made to create a Buffer Field
11038 length zero (A CreateField with a length operand of zero.)
11040 The interpreter now issues a warning whenever executable code at the
11042 level is detected during ACPI table load. This will give some idea of the
11043 prevalence of this type of code.
11045 Implemented support for references to named objects (other than control
11046 methods) within package objects.
11048 Enhanced package object output for the debug object. Package objects are
11050 completely dumped, showing all elements.
11052 Enhanced miscellaneous object output for the debug object. Any object can
11053 now be written to the debug object (for example, a device object can be
11054 written, and the type of the object will be displayed.)
11056 The "static" qualifier has been added to all local functions across both
11058 core subsystem and the iASL compiler.
11060 The number of "long" lines (> 80 chars) within the source has been
11061 significantly reduced, by about 1/3.
11063 Cleaned up all header files to ensure that all CA/iASL functions are
11064 prototyped (even static functions) and the formatting is consistent.
11066 Two new header files have been added, acopcode.h and acnames.h.
11068 Removed several obsolete functions that were no longer used.
11070 Code and Data Size: Current and previous core subsystem library sizes are
11071 shown below. These are the code and data sizes for the acpica.lib
11073 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11074 any ACPI driver or OSPM code. The debug version of the code includes the
11075 debug output trace mechanism and has a much larger code and data size.
11077 that these values will vary depending on the efficiency of the compiler
11079 the compiler options used during generation.
11082 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11083 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11085 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11086 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11090 2) iASL Compiler/Disassembler:
11092 Fixed a problem with the resource descriptor generation/support. For the
11093 ResourceSourceIndex and the ResourceSource fields, both must be present,
11095 both must be not present - can't have one without the other.
11097 The compiler now returns non-zero from the main procedure if any errors
11099 occurred during the compilation.
11102 ----------------------------------------
11103 09 March 2005. Summary of changes for version 20050309:
11105 1) ACPI CA Core Subsystem:
11107 The string-to-buffer implicit conversion code has been modified again
11109 a change to the ACPI specification. In order to match the behavior of
11111 other major ACPI implementation, the target buffer is no longer truncated
11113 the source string is smaller than an existing target buffer. This change
11114 requires an update to the ACPI spec, and should eliminate the recent
11115 AE_AML_BUFFER_LIMIT issues.
11117 The "implicit return" support was rewritten to a new algorithm that
11119 the general case. Rather than attempt to determine when a method is about
11121 exit, the result of every ASL operator is saved momentarily until the
11123 next ASL operator is executed. Therefore, no matter how the method exits,
11124 there will always be a saved implicit return value. This feature is only
11125 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11127 AE_AML_NO_RETURN_VALUE errors when enabled.
11129 Implemented implicit conversion support for the predicate (operand) of
11131 If, Else, and While operators. String and Buffer arguments are
11133 converted to Integers.
11135 Changed the string-to-integer conversion behavior to match the new ACPI
11136 errata: "If no integer object exists, a new integer is created. The ASCII
11137 string is interpreted as a hexadecimal constant. Each string character is
11138 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11139 with the first character as the most significant digit, and ending with
11141 first non-hexadecimal character or end-of-string." This means that the
11143 non-hex character terminates the conversion and this is the code that was
11146 Fixed a problem where the ObjectType operator would fail (fault) when
11148 on an Index of a Package which pointed to a null package element. The
11149 operator now properly returns zero (Uninitialized) in this case.
11151 Fixed a problem where the While operator used excessive memory by not
11152 properly popping the result stack during execution. There was no memory
11154 after execution, however. (Code provided by Valery Podrezov.)
11156 Fixed a problem where references to control methods within Package
11158 caused the method to be invoked, instead of producing a reference object
11159 pointing to the method.
11161 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
11163 improve performance and reduce code size. (Code provided by Alexey
11166 Code and Data Size: Current and previous core subsystem library sizes are
11167 shown below. These are the code and data sizes for the acpica.lib
11169 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11170 any ACPI driver or OSPM code. The debug version of the code includes the
11171 debug output trace mechanism and has a much larger code and data size.
11173 that these values will vary depending on the efficiency of the compiler
11175 the compiler options used during generation.
11178 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11179 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11181 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11182 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11185 2) iASL Compiler/Disassembler:
11187 Fixed a problem with the Return operator with no arguments. Since the AML
11188 grammar for the byte encoding requires an operand for the Return opcode,
11190 compiler now emits a Return(Zero) for this case. An ACPI specification
11191 update has been written for this case.
11193 For tables other than the DSDT, namepath optimization is automatically
11194 disabled. This is because SSDTs can be loaded anywhere in the namespace,
11196 compiler has no knowledge of where, and thus cannot optimize namepaths.
11198 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
11199 inadvertently omitted from the ACPI specification, and will require an
11200 update to the spec.
11202 The source file scan for ASCII characters is now optional (-a). This
11204 was made because some vendors place non-ascii characters within comments.
11205 However, the scan is simply a brute-force byte compare to ensure all
11206 characters in the file are in the range 0x00 to 0x7F.
11208 Fixed a problem with the CondRefOf operator where the compiler was
11209 inappropriately checking for the existence of the target. Since the point
11211 the operator is to check for the existence of the target at run-time, the
11212 compiler no longer checks for the target existence.
11214 Fixed a problem where errors generated from the internal AML interpreter
11215 during constant folding were not handled properly, causing a fault.
11217 Fixed a problem with overly aggressive range checking for the Stall
11218 operator. The valid range (max 255) is now only checked if the operand is
11220 type Integer. All other operand types cannot be statically checked.
11222 Fixed a problem where control method references within the RefOf,
11224 and ObjectType operators were not treated properly. They are now treated
11226 actual references, not method invocations.
11228 Fixed and enhanced the "list namespace" option (-ln). This option was
11230 a number of releases ago.
11232 Improved error handling for the Field, IndexField, and BankField
11234 The compiler now cleanly reports and recovers from errors in the field
11235 component (FieldUnit) list.
11237 Fixed a disassembler problem where the optional ResourceDescriptor fields
11238 TRS and TTP were not always handled correctly.
11240 Disassembler - Comments in output now use "//" instead of "/*"
11242 ----------------------------------------
11243 28 February 2005. Summary of changes for version 20050228:
11245 1) ACPI CA Core Subsystem:
11247 Fixed a problem where the result of an Index() operator (an object
11248 reference) must increment the reference count on the target object for
11250 life of the object reference.
11252 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
11253 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
11255 resource descriptors.
11257 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
11258 Space Descriptor" string, indicating interpreter support for the
11262 Implemented header support for the new ACPI 3.0 FADT flag bits.
11264 Implemented header support for the new ACPI 3.0 PCI Express bits for the
11266 status/enable registers.
11268 Updated header support for the MADT processor local Apic struct and MADT
11269 platform interrupt source struct for new ACPI 3.0 fields.
11271 Implemented header support for the SRAT and SLIT ACPI tables.
11273 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
11277 Code and Data Size: Current and previous core subsystem library sizes are
11278 shown below. These are the code and data sizes for the acpica.lib
11280 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11281 any ACPI driver or OSPM code. The debug version of the code includes the
11282 debug output trace mechanism and has a much larger code and data size.
11284 that these values will vary depending on the efficiency of the compiler
11286 the compiler options used during generation.
11289 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11290 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11292 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11293 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11296 2) iASL Compiler/Disassembler:
11298 Fixed a problem with the internal 64-bit String-to-integer conversion
11300 strings less than two characters long.
11302 Fixed a problem with constant folding where the result of the Index()
11303 operator can not be considered a constant. This means that Index() cannot
11305 a type3 opcode and this will require an update to the ACPI specification.
11307 Disassembler: Implemented support for the TTP, MTP, and TRS resource
11308 descriptor fields. These fields were inadvertently ignored and not output
11310 the disassembly of the resource descriptor.
11313 ----------------------------------------
11314 11 February 2005. Summary of changes for version 20050211:
11316 1) ACPI CA Core Subsystem:
11318 Implemented ACPI 3.0 support for implicit conversion within the Match()
11319 operator. MatchObjects can now be of type integer, buffer, or string
11321 of just type integer. Package elements are implicitly converted to the
11323 of the MatchObject. This change aligns the behavior of Match() with the
11324 behavior of the other logical operators (LLess(), etc.) It also requires
11326 errata change to the ACPI specification as this support was intended for
11327 ACPI 3.0, but was inadvertently omitted.
11329 Fixed a problem with the internal implicit "to buffer" conversion.
11331 that are converted to buffers will cause buffer truncation if the string
11333 smaller than the target buffer. Integers that are converted to buffers
11335 not cause buffer truncation, only zero extension (both as per the ACPI
11336 spec.) The problem was introduced when code was added to truncate the
11337 buffer, but this should not be performed in all cases, only the string
11340 Fixed a problem with the Buffer and Package operators where the
11342 would get confused if two such operators were used as operands to an ASL
11343 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
11344 stack was not being popped after the execution of these operators,
11346 in an AE_NO_RETURN_VALUE exception.
11348 Fixed a problem with constructs of the form Store(Index(...),...). The
11349 reference object returned from Index was inadvertently resolved to an
11351 value. This problem was introduced in version 20050114 when the behavior
11353 Store() was modified to restrict the object types that can be used as the
11354 source operand (to match the ACPI specification.)
11356 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
11358 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
11360 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
11362 Code and Data Size: Current and previous core subsystem library sizes are
11363 shown below. These are the code and data sizes for the acpica.lib
11365 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11366 any ACPI driver or OSPM code. The debug version of the code includes the
11367 debug output trace mechanism and has a much larger code and data size.
11369 that these values will vary depending on the efficiency of the compiler
11371 the compiler options used during generation.
11374 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11375 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11377 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11378 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11381 2) iASL Compiler/Disassembler:
11383 Fixed a code generation problem in the constant folding optimization code
11384 where incorrect code was generated if a constant was reduced to a buffer
11385 object (i.e., a reduced type 5 opcode.)
11387 Fixed a typechecking problem for the ToBuffer operator. Caused by an
11388 incorrect return type in the internal opcode information table.
11390 ----------------------------------------
11391 25 January 2005. Summary of changes for version 20050125:
11393 1) ACPI CA Core Subsystem:
11395 Fixed a recently introduced problem with the Global Lock where the
11396 underlying semaphore was not created. This problem was introduced in
11397 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
11398 Acquire() operation on _GL.
11400 The local object cache is now optional, and is disabled by default. Both
11401 AcpiExec and the iASL compiler enable the cache because they run in user
11402 mode and this enhances their performance. #define
11403 ACPI_ENABLE_OBJECT_CACHE
11404 to enable the local cache.
11406 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
11408 optional "implicit return" support where an error was returned if no
11410 object was expected, but one was implicitly returned. AE_OK is now
11412 in this case and the implicitly returned object is deleted.
11413 AcpiUtEvaluateObject is only occasionally used, and only to execute
11415 methods such as _STA and _INI where the return type is known up front.
11417 Fixed a few issues with the internal convert-to-integer code. It now
11419 an error if an attempt is made to convert a null string, a string of only
11420 blanks/tabs, or a zero-length buffer. This affects both implicit
11422 and explicit conversion via the ToInteger() operator.
11424 The internal debug code in AcpiUtAcquireMutex has been commented out. It
11426 not needed for normal operation and should increase the performance of
11428 entire subsystem. The code remains in case it is needed for debug
11432 The AcpiExec source and makefile are included in the Unix/Linux package
11436 Code and Data Size: Current and previous core subsystem library sizes are
11437 shown below. These are the code and data sizes for the acpica.lib
11439 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11440 any ACPI driver or OSPM code. The debug version of the code includes the
11441 debug output trace mechanism and has a much larger code and data size.
11443 that these values will vary depending on the efficiency of the compiler
11445 the compiler options used during generation.
11448 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11449 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11451 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11452 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11454 2) iASL Compiler/Disassembler:
11456 Switch/Case support: A warning is now issued if the type of the Switch
11458 cannot be determined at compile time. For example, Switch(Arg0) will
11459 generate the warning, and the type is assumed to be an integer. As per
11461 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
11465 Switch/Case support: Implemented support for buffer and string objects as
11466 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
11467 buffers and strings.
11469 Switch/Case support: The emitted code for the LEqual() comparisons now
11471 the switch value as the first operand, not the second. The case value is
11473 the second operand, and this allows the case value to be implicitly
11474 converted to the type of the switch value, not the other way around.
11476 Switch/Case support: Temporary variables are now emitted immediately
11478 the control method, not at the global level. This means that there are
11480 36 temps available per-method, not 36 temps per-module as was the case
11482 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
11484 ----------------------------------------
11485 14 January 2005. Summary of changes for version 20050114:
11487 Added 2005 copyright to all module headers. This affects every module in
11488 the core subsystem, iASL compiler, and the utilities.
11490 1) ACPI CA Core Subsystem:
11492 Fixed an issue with the String-to-Buffer conversion code where the string
11493 null terminator was not included in the buffer after conversion, but
11495 is existing ASL that assumes the string null terminator is included. This
11497 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
11498 introduced in the previous version when the code was updated to correctly
11499 set the converted buffer size as per the ACPI specification. The ACPI
11501 is ambiguous and will be updated to specify that the null terminator must
11503 included in the converted buffer. This also affects the ToBuffer() ASL
11506 Fixed a problem with the Mid() ASL/AML operator where it did not work
11507 correctly on Buffer objects. Newly created sub-buffers were not being
11512 Fixed a problem in AcpiTbFindTable where incorrect string compares were
11513 performed on the OemId and OemTableId table header fields. These fields
11515 not null terminated, so strncmp is now used instead of strcmp.
11517 Implemented a restriction on the Store() ASL/AML operator to align the
11518 behavior with the ACPI specification. Previously, any object could be
11520 as the source operand. Now, the only objects that may be used are
11522 Buffers, Strings, Packages, Object References, and DDB Handles. If
11523 necessary, the original behavior can be restored by enabling the
11524 EnableInterpreterSlack flag.
11526 Enhanced the optional "implicit return" support to allow an implicit
11528 value from methods that are invoked externally via the AcpiEvaluateObject
11529 interface. This enables implicit returns from the _STA and _INI methods,
11532 Changed the Revision() ASL/AML operator to return the current version of
11534 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
11536 the supported ACPI version (This is the function of the _REV method).
11538 Updated the _REV predefined method to return the currently supported
11542 Implemented batch mode option for the AcpiExec utility (-b).
11544 Code and Data Size: Current and previous core subsystem library sizes are
11545 shown below. These are the code and data sizes for the acpica.lib
11547 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11548 any ACPI driver or OSPM code. The debug version of the code includes the
11549 debug output trace mechanism and has a much larger code and data size.
11551 that these values will vary depending on the efficiency of the compiler
11553 the compiler options used during generation.
11556 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11557 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11559 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11560 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11562 ----------------------------------------
11563 10 December 2004. Summary of changes for version 20041210:
11565 ACPI 3.0 support is nearing completion in both the iASL compiler and the
11566 ACPI CA core subsystem.
11568 1) ACPI CA Core Subsystem:
11570 Fixed a problem in the ToDecimalString operator where the resulting
11572 length was incorrectly calculated. The length is now calculated exactly,
11573 eliminating incorrect AE_STRING_LIMIT exceptions.
11575 Fixed a problem in the ToHexString operator to allow a maximum 200
11577 string to be produced.
11579 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
11581 routine where the length of the resulting buffer was not truncated to the
11582 new size (if the target buffer already existed).
11584 Code and Data Size: Current and previous core subsystem library sizes are
11585 shown below. These are the code and data sizes for the acpica.lib
11587 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11588 any ACPI driver or OSPM code. The debug version of the code includes the
11589 debug output trace mechanism and has a much larger code and data size.
11591 that these values will vary depending on the efficiency of the compiler
11593 the compiler options used during generation.
11596 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11597 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11599 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11600 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11603 2) iASL Compiler/Disassembler:
11605 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
11606 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
11607 Includes support in the disassembler.
11609 Implemented support for the new (ACPI 3.0) parameter to the Register
11613 Fixed a problem where the _HE resource name for the Interrupt macro was
11614 referencing bit 0 instead of bit 1.
11616 Implemented check for maximum 255 interrupts in the Interrupt macro.
11618 Fixed a problem with the predefined resource descriptor names where
11619 incorrect AML code was generated if the offset within the resource buffer
11620 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
11621 but did not update the surrounding package lengths.
11623 Changes to the Dma macro: All channels within the channel list must be
11625 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
11626 optional (default is BusMaster).
11628 Implemented check for maximum 7 data bytes for the VendorShort macro.
11630 The ReadWrite parameter is now optional for the Memory32 and similar
11633 ----------------------------------------
11634 03 December 2004. Summary of changes for version 20041203:
11636 1) ACPI CA Core Subsystem:
11638 The low-level field insertion/extraction code (exfldio) has been
11640 rewritten to eliminate unnecessary complexity, bugs, and boundary
11643 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
11645 operators where the input operand could be inadvertently deleted if no
11646 conversion was necessary (e.g., if the input to ToInteger was an Integer
11649 Fixed a problem with the ToDecimalString and ToHexString where an
11651 exception code was returned if the resulting string would be > 200 chars.
11652 AE_STRING_LIMIT is now returned.
11654 Fixed a problem with the Concatenate operator where AE_OK was always
11655 returned, even if the operation failed.
11657 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
11658 semaphores to be allocated.
11660 Code and Data Size: Current and previous core subsystem library sizes are
11661 shown below. These are the code and data sizes for the acpica.lib
11663 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11664 any ACPI driver or OSPM code. The debug version of the code includes the
11665 debug output trace mechanism and has a much larger code and data size.
11667 that these values will vary depending on the efficiency of the compiler
11669 the compiler options used during generation.
11672 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11673 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11675 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11676 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11679 2) iASL Compiler/Disassembler:
11681 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
11682 recently introduced in 20041119.
11684 Fixed a problem with the ToUUID macro where the upper nybble of each
11686 byte was inadvertently set to zero.
11688 ----------------------------------------
11689 19 November 2004. Summary of changes for version 20041119:
11691 1) ACPI CA Core Subsystem:
11693 Fixed a problem in the internal ConvertToInteger routine where new
11695 were not truncated to 32 bits for 32-bit ACPI tables. This routine
11697 buffers and strings to integers.
11699 Implemented support to store a value to an Index() on a String object.
11701 is an ACPI 2.0 feature that had not yet been implemented.
11703 Implemented new behavior for storing objects to individual package
11705 (via the Index() operator). The previous behavior was to invoke the
11707 conversion rules if an object was already present at the index. The new
11708 behavior is to simply delete any existing object and directly store the
11710 object. Although the ACPI specification seems unclear on this subject,
11712 ACPI implementations behave in this manner. (This is the root of the
11713 AE_BAD_HEX_CONSTANT issue.)
11715 Modified the RSDP memory scan mechanism to support the extended checksum
11717 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
11718 RSDP signature is found with a valid checksum.
11720 Code and Data Size: Current and previous core subsystem library sizes are
11721 shown below. These are the code and data sizes for the acpica.lib
11723 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11724 any ACPI driver or OSPM code. The debug version of the code includes the
11725 debug output trace mechanism and has a much larger code and data size.
11727 that these values will vary depending on the efficiency of the compiler
11729 the compiler options used during generation.
11732 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11733 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11735 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11736 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11739 2) iASL Compiler/Disassembler:
11741 Fixed a missing semicolon in the aslcompiler.y file.
11743 ----------------------------------------
11744 05 November 2004. Summary of changes for version 20041105:
11746 1) ACPI CA Core Subsystem:
11748 Implemented support for FADT revision 2. This was an interim table
11750 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
11752 Implemented optional support to allow uninitialized LocalX and ArgX
11753 variables in a control method. The variables are initialized to an
11755 object with a value of zero. This support is enabled by setting the
11756 AcpiGbl_EnableInterpreterSlack flag to TRUE.
11758 Implemented support for Integer objects for the SizeOf operator. Either
11760 or 8 is returned, depending on the current integer size (32-bit or 64-
11762 depending on the parent table revision).
11764 Fixed a problem in the implementation of the SizeOf and ObjectType
11766 where the operand was resolved to a value too early, causing incorrect
11767 return values for some objects.
11769 Fixed some possible memory leaks during exceptional conditions.
11771 Code and Data Size: Current and previous core subsystem library sizes are
11772 shown below. These are the code and data sizes for the acpica.lib
11774 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11775 any ACPI driver or OSPM code. The debug version of the code includes the
11776 debug output trace mechanism and has a much larger code and data size.
11778 that these values will vary depending on the efficiency of the compiler
11780 the compiler options used during generation.
11783 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11784 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11786 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11787 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11790 2) iASL Compiler/Disassembler:
11792 Implemented support for all ACPI 3.0 reserved names and methods.
11794 Implemented all ACPI 3.0 grammar elements in the front-end, including
11795 support for semicolons.
11797 Implemented the ACPI 3.0 Function() and ToUUID() macros
11799 Fixed a problem in the disassembler where a Scope() operator would not be
11800 emitted properly if the target of the scope was in another table.
11802 ----------------------------------------
11803 15 October 2004. Summary of changes for version 20041015:
11805 Note: ACPI CA is currently undergoing an in-depth and complete formal
11806 evaluation to test/verify the following areas. Other suggestions are
11807 welcome. This will result in an increase in the frequency of releases and
11808 the number of bug fixes in the next few months.
11809 - Functional tests for all ASL/AML operators
11810 - All implicit/explicit type conversions
11811 - Bit fields and operation regions
11812 - 64-bit math support and 32-bit-only "truncated" math support
11813 - Exceptional conditions, both compiler and interpreter
11814 - Dynamic object deletion and memory leaks
11815 - ACPI 3.0 support when implemented
11816 - External interfaces to the ACPI subsystem
11819 1) ACPI CA Core Subsystem:
11821 Fixed two alignment issues on 64-bit platforms - within debug statements
11823 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
11825 field within the non-aligned ACPI generic address structure.
11827 Fixed a problem in the Increment and Decrement operators where incorrect
11828 operand resolution could result in the inadvertent modification of the
11829 original integer when the integer is passed into another method as an
11830 argument and the arg is then incremented/decremented.
11832 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
11834 BCD number were truncated during conversion.
11836 Fixed a problem in the ToDecimal operator where the length of the
11838 string could be set incorrectly too long if the input operand was a
11842 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
11844 within a buffer would prematurely terminate a compare between buffer
11847 Added a check for string overflow (>200 characters as per the ACPI
11848 specification) during the Concatenate operator with two string operands.
11850 Code and Data Size: Current and previous core subsystem library sizes are
11851 shown below. These are the code and data sizes for the acpica.lib
11853 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11854 any ACPI driver or OSPM code. The debug version of the code includes the
11855 debug output trace mechanism and has a much larger code and data size.
11857 that these values will vary depending on the efficiency of the compiler
11859 the compiler options used during generation.
11862 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11863 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11865 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11866 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11870 2) iASL Compiler/Disassembler:
11872 Allow the use of the ObjectType operator on uninitialized Locals and Args
11873 (returns 0 as per the ACPI specification).
11875 Fixed a problem where the compiler would fault if there was a syntax
11877 in the FieldName of all of the various CreateXXXField operators.
11879 Disallow the use of lower case letters within the EISAID macro, as per
11881 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
11883 U is an uppercase letter and N is a hex digit.
11886 ----------------------------------------
11887 06 October 2004. Summary of changes for version 20041006:
11889 1) ACPI CA Core Subsystem:
11891 Implemented support for the ACPI 3.0 Timer operator. This ASL function
11892 implements a 64-bit timer with 100 nanosecond granularity.
11894 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
11895 implement the ACPI 3.0 Timer operator. This allows the host OS to
11897 the timer with the best clock available. Also, it keeps the core
11899 out of the clock handling business, since the host OS (usually) performs
11902 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
11903 functions use a 64-bit address which is part of the packed ACPI Generic
11904 Address Structure. Since the structure is non-aligned, the alignment
11906 are now used to extract the address to a local variable before use.
11908 Fixed a problem where the ToInteger operator assumed all input strings
11910 hexadecimal. The operator now handles both decimal strings and hex
11912 (prefixed with "0x").
11914 Fixed a problem where the string length in the string object created as a
11915 result of the internal ConvertToString procedure could be incorrect. This
11916 potentially affected all implicit conversions and also the
11918 and ToHexString operators.
11920 Fixed two problems in the ToString operator. If the length parameter was
11921 zero, an incorrect string object was created and the value of the input
11922 length parameter was inadvertently changed from zero to Ones.
11924 Fixed a problem where the optional ResourceSource string in the
11926 resource macro was ignored.
11928 Simplified the interfaces to the internal division functions, reducing
11930 size and complexity.
11932 Code and Data Size: Current and previous core subsystem library sizes are
11933 shown below. These are the code and data sizes for the acpica.lib
11935 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11936 any ACPI driver or OSPM code. The debug version of the code includes the
11937 debug output trace mechanism and has a much larger code and data size.
11939 that these values will vary depending on the efficiency of the compiler
11941 the compiler options used during generation.
11944 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11945 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11947 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11948 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11951 2) iASL Compiler/Disassembler:
11953 Implemented support for the ACPI 3.0 Timer operator.
11955 Fixed a problem where the Default() operator was inadvertently ignored in
11957 Switch/Case block. This was a problem in the translation of the Switch
11958 statement to If...Else pairs.
11960 Added support to allow a standalone Return operator, with no parentheses
11964 Fixed a problem with code generation for the ElseIf operator where the
11965 translated Else...If parse tree was improperly constructed leading to the
11968 ----------------------------------------
11969 22 September 2004. Summary of changes for version 20040922:
11971 1) ACPI CA Core Subsystem:
11973 Fixed a problem with the implementation of the LNot() operator where
11975 was not returned for the TRUE case. Changed the code to return Ones
11977 of (!Arg) which was usually 1. This change affects iASL constant folding
11979 this operator also.
11981 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
11983 initialized properly -- Now zero the entire buffer in this case where the
11984 buffer already exists.
11986 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
11987 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
11988 related code considerably. This will require changes/updates to all OS
11989 interface layers (OSLs.)
11991 Implemented a new external interface, AcpiInstallExceptionHandler, to
11993 a system exception handler to be installed. This handler is invoked upon
11995 run-time exception that occurs during control method execution.
11997 Added support for the DSDT in AcpiTbFindTable. This allows the
11998 DataTableRegion() operator to access the local copy of the DSDT.
12000 Code and Data Size: Current and previous core subsystem library sizes are
12001 shown below. These are the code and data sizes for the acpica.lib
12003 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12004 any ACPI driver or OSPM code. The debug version of the code includes the
12005 debug output trace mechanism and has a much larger code and data size.
12007 that these values will vary depending on the efficiency of the compiler
12009 the compiler options used during generation.
12012 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12013 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12015 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12016 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12019 2) iASL Compiler/Disassembler:
12021 Fixed a problem with constant folding and the LNot operator. LNot was
12022 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12024 could result in the generation of an incorrect folded/reduced constant.
12026 End-Of-File is now allowed within a "//"-style comment. A parse error no
12027 longer occurs if such a comment is at the very end of the input ASL
12031 Implemented the "-r" option to override the Revision in the table header.
12032 The initial use of this option will be to simplify the evaluation of the
12034 interpreter by allowing a single ASL source module to be compiled for
12036 32-bit or 64-bit integers.
12039 ----------------------------------------
12040 27 August 2004. Summary of changes for version 20040827:
12042 1) ACPI CA Core Subsystem:
12044 - Implemented support for implicit object conversion in the non-numeric
12045 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12047 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12048 the second operand is implicitly converted on the fly to match the type
12050 the first operand. For example:
12052 LEqual (Source1, Source2)
12054 Source1 and Source2 must each evaluate to an integer, a string, or a
12056 The data type of Source1 dictates the required type of Source2. Source2
12058 implicitly converted if necessary to match the type of Source1.
12060 - Updated and corrected the behavior of the string conversion support.
12062 rules concerning conversion of buffers to strings (according to the ACPI
12063 specification) are as follows:
12065 ToDecimalString - explicit byte-wise conversion of buffer to string of
12066 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12068 conversion of buffer to string of hex values (0-FF) separated by commas.
12069 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12071 copy with no transform except NULL terminated. Any other implicit buffer-
12073 string conversion - byte-wise conversion of buffer to string of hex
12075 (0-FF) separated by spaces.
12077 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12079 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12081 one byte too short in the case of a node in the root scope. This could
12082 cause a fault during debug output.
12084 - Code and Data Size: Current and previous core subsystem library sizes
12086 shown below. These are the code and data sizes for the acpica.lib
12088 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12089 any ACPI driver or OSPM code. The debug version of the code includes the
12090 debug output trace mechanism and has a much larger code and data size.
12092 that these values will vary depending on the efficiency of the compiler
12094 the compiler options used during generation.
12097 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12098 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12100 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12101 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12104 2) iASL Compiler/Disassembler:
12106 - Fixed a Linux generation error.
12109 ----------------------------------------
12110 16 August 2004. Summary of changes for version 20040816:
12112 1) ACPI CA Core Subsystem:
12114 Designed and implemented support within the AML interpreter for the so-
12115 called "implicit return". This support returns the result of the last
12117 operation within a control method, in the absence of an explicit Return()
12118 operator. A few machines depend on this behavior, even though it is not
12119 explicitly supported by the ASL language. It is optional support that
12121 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12123 Removed support for the PCI_Config address space from the internal low
12125 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12126 support was not used internally, and would not work correctly anyway
12128 the PCI bus number and segment number were not supported. There are
12129 separate interfaces for PCI configuration space access because of the
12133 Code and Data Size: Current and previous core subsystem library sizes are
12134 shown below. These are the code and data sizes for the acpica.lib
12136 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12137 any ACPI driver or OSPM code. The debug version of the code includes the
12138 debug output trace mechanism and has a much larger code and data size.
12140 that these values will vary depending on the efficiency of the compiler
12142 the compiler options used during generation.
12145 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12146 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12148 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12149 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12152 2) iASL Compiler/Disassembler:
12154 Fixed a problem where constants in ASL expressions at the root level (not
12155 within a control method) could be inadvertently truncated during code
12156 generation. This problem was introduced in the 20040715 release.
12159 ----------------------------------------
12160 15 July 2004. Summary of changes for version 20040715:
12162 1) ACPI CA Core Subsystem:
12164 Restructured the internal HW GPE interfaces to pass/track the current
12166 of interrupts (enabled/disabled) in order to avoid possible deadlock and
12167 increase flexibility of the interfaces.
12169 Implemented a "lexicographical compare" for String and Buffer objects
12171 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
12173 as per further clarification to the ACPI specification. Behavior is
12175 to C library "strcmp".
12177 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
12178 external function. In the 32-bit non-debug case, the stack use has been
12179 reduced from 168 bytes to 32 bytes.
12181 Deployed a new run-time configuration flag,
12182 AcpiGbl_EnableInterpreterSlack,
12183 whose purpose is to allow the AML interpreter to forgive certain bad AML
12184 constructs. Default setting is FALSE.
12186 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
12188 support code. If enabled, it allows field access to go beyond the end of
12190 region definition if the field is within the region length rounded up to
12192 next access width boundary (a common coding error.)
12194 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
12195 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
12197 symbols are lowercased by the latest version of the AcpiSrc tool.
12199 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
12200 rename "Register" to simply "Reg" to prevent certain compilers from
12203 Code and Data Size: Current and previous core subsystem library sizes are
12204 shown below. These are the code and data sizes for the acpica.lib
12206 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12207 any ACPI driver or OSPM code. The debug version of the code includes the
12208 debug output trace mechanism and has a much larger code and data size.
12210 that these values will vary depending on the efficiency of the compiler
12212 the compiler options used during generation.
12215 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12216 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12218 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12219 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12222 2) iASL Compiler/Disassembler:
12224 Implemented full support for Package objects within the Case() operator.
12225 Note: The Break() operator is currently not supported within Case blocks
12226 (TermLists) as there is some question about backward compatibility with
12231 Fixed a problem where complex terms were not supported properly within
12235 Eliminated extraneous warning for compiler-emitted reserved names of the
12236 form "_T_x". (Used in Switch/Case operators.)
12238 Eliminated optimization messages for "_T_x" objects and small constants
12239 within the DefinitionBlock operator.
12242 ----------------------------------------
12243 15 June 2004. Summary of changes for version 20040615:
12245 1) ACPI CA Core Subsystem:
12247 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12249 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12252 All directory names in the entire source package are lower case, as they
12253 were in earlier releases.
12255 Implemented "Disassemble" command in the AML debugger that will
12257 a single control method.
12259 Code and Data Size: Current and previous core subsystem library sizes are
12260 shown below. These are the code and data sizes for the acpica.lib
12262 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12263 any ACPI driver or OSPM code. The debug version of the code includes the
12264 debug output trace mechanism and has a much larger code and data size.
12266 that these values will vary depending on the efficiency of the compiler
12268 the compiler options used during generation.
12271 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12272 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12275 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12276 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12279 2) iASL Compiler/Disassembler:
12281 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12283 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12286 All directory names in the entire source package are lower case, as they
12287 were in earlier releases.
12289 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
12292 Fixed an issue with the Windows version of the compiler where later
12294 of Windows place the FADT in the registry under the name "FADT" and not
12295 "FACP" as earlier versions did. This applies when using the -g or -
12296 d<nofilename> options. The compiler now looks for both strings as
12299 Fixed a problem with compiler namepath optimization where a namepath
12301 the Scope() operator could not be optimized if the namepath was a subpath
12303 the current scope path.
12305 ----------------------------------------
12306 27 May 2004. Summary of changes for version 20040527:
12308 1) ACPI CA Core Subsystem:
12310 Completed a new design and implementation for EBDA (Extended BIOS Data
12312 support in the RSDP scan code. The original code improperly scanned for
12314 EBDA by simply scanning from memory location 0 to 0x400. The correct
12316 is to first obtain the EBDA pointer from within the BIOS data area, then
12317 scan 1K of memory starting at the EBDA pointer. There appear to be few
12319 any machines that place the RSDP in the EBDA, however.
12321 Integrated a fix for a possible fault during evaluation of BufferField
12322 arguments. Obsolete code that was causing the problem was removed.
12324 Found and fixed a problem in the Field Support Code where data could be
12325 corrupted on a bit field read that starts on an aligned boundary but does
12326 not end on an aligned boundary. Merged the read/write "datum length"
12327 calculation code into a common procedure.
12329 Rolled in a couple of changes to the FreeBSD-specific header.
12332 Code and Data Size: Current and previous core subsystem library sizes are
12333 shown below. These are the code and data sizes for the acpica.lib
12335 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12336 any ACPI driver or OSPM code. The debug version of the code includes the
12337 debug output trace mechanism and has a much larger code and data size.
12339 that these values will vary depending on the efficiency of the compiler
12341 the compiler options used during generation.
12344 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12345 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12347 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12348 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12351 2) iASL Compiler/Disassembler:
12353 Fixed a generation warning produced by some overly-verbose compilers for
12357 ----------------------------------------
12358 14 May 2004. Summary of changes for version 20040514:
12360 1) ACPI CA Core Subsystem:
12362 Fixed a problem where hardware GPE enable bits sometimes not set properly
12363 during and after GPE method execution. Result of 04/27 changes.
12365 Removed extra "clear all GPEs" when sleeping/waking.
12367 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
12368 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
12370 the new AcpiEv* calls as appropriate.
12372 ACPI_OS_NAME was removed from the OS-specific headers. The default name
12374 now "Microsoft Windows NT" for maximum compatibility. However this can
12376 changed by modifying the acconfig.h file.
12378 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
12379 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
12381 Run _INI methods on ThermalZone objects. This is against the ACPI
12382 specification, but there is apparently ASL code in the field that has
12384 _INI methods, and apparently "other" AML interpreters execute them.
12386 Performed a full 16/32/64 bit lint that resulted in some small changes.
12388 Added a sleep simulation command to the AML debugger to test sleep code.
12390 Code and Data Size: Current and previous core subsystem library sizes are
12391 shown below. These are the code and data sizes for the acpica.lib
12393 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12394 any ACPI driver or OSPM code. The debug version of the code includes the
12395 debug output trace mechanism and has a much larger code and data size.
12397 that these values will vary depending on the efficiency of the compiler
12399 the compiler options used during generation.
12402 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12403 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12405 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12406 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12408 ----------------------------------------
12409 27 April 2004. Summary of changes for version 20040427:
12411 1) ACPI CA Core Subsystem:
12413 Completed a major overhaul of the GPE handling within ACPI CA. There are
12414 now three types of GPEs: wake-only, runtime-only, and combination
12416 The only GPEs allowed to be combination wake/run are for button-style
12417 devices such as a control-method power button, control-method sleep
12419 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
12421 referenced by any _PRW methods are marked for "runtime" and hardware
12422 enabled. Any GPE that is referenced by a _PRW method is marked for
12424 (and disabled at runtime). However, at sleep time, only those GPEs that
12425 have been specifically enabled for wake via the AcpiEnableGpe interface
12427 actually be hardware enabled.
12429 A new external interface has been added, AcpiSetGpeType(), that is meant
12431 be used by device drivers to force a GPE to a particular type. It will
12433 especially useful for the drivers for the button devices mentioned above.
12435 Completed restructuring of the ACPI CA initialization sequence so that
12436 default operation region handlers are installed before GPEs are
12438 and the _PRW methods are executed. This will prevent errors when the
12440 methods attempt to access system memory or I/O space.
12442 GPE enable/disable no longer reads the GPE enable register. We now keep
12444 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
12445 thus no longer depend on the hardware to maintain these bits.
12447 Always clear the wake status and fixed/GPE status bits before sleep, even
12450 Improved the AML debugger output for displaying the GPE blocks and their
12453 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
12457 Fixed a problem where the physical address was incorrectly calculated
12459 the Load() operator was used to directly load from an Operation Region
12461 loading from a Field object.) Also added check for minimum table length
12465 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
12468 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
12469 consistency with the other fields returned.
12471 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
12472 structure for each GPE in the system, so the size of this structure is
12475 CPU stack requirement reduction: Cleaned up the method execution and
12477 evaluation paths so that now a parameter structure is passed, instead of
12478 copying the various method parameters over and over again.
12480 In evregion.c: Correctly exit and reenter the interpreter region if and
12481 only if dispatching an operation region request to a user-installed
12483 Do not exit/reenter when dispatching to a default handler (e.g., default
12484 system memory or I/O handlers)
12487 Notes for updating drivers for the new GPE support. The following
12489 must be made to ACPI-related device drivers that are attached to one or
12491 GPEs: (This information will be added to the ACPI CA Programmer
12494 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
12496 explicitly call AcpiEnableGpe.
12497 2) There is a new interface called AcpiSetGpeType. This should be called
12498 before enabling the GPE. Also, this interface will automatically disable
12499 the GPE if it is currently enabled.
12500 3) AcpiEnableGpe no longer supports a GPE type flag.
12502 Specific drivers that must be changed:
12504 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
12505 AeGpeHandler, NULL);
12506 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
12507 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
12509 2) Button Drivers (Power, Lid, Sleep):
12510 Run _PRW method under parent device
12511 If _PRW exists: /* This is a control-method button */
12512 Extract GPE number and possibly GpeDevice
12513 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
12514 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
12516 For all other devices that have _PRWs, we automatically set the GPE type
12518 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
12520 must be done on a selective basis, usually requiring some kind of user
12522 to allow the user to pick the wake devices.
12525 Code and Data Size: Current and previous core subsystem library sizes are
12526 shown below. These are the code and data sizes for the acpica.lib
12528 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12529 any ACPI driver or OSPM code. The debug version of the code includes the
12530 debug output trace mechanism and has a much larger code and data size.
12532 that these values will vary depending on the efficiency of the compiler
12534 the compiler options used during generation.
12537 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12538 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12541 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12542 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12546 ----------------------------------------
12547 02 April 2004. Summary of changes for version 20040402:
12549 1) ACPI CA Core Subsystem:
12551 Fixed an interpreter problem where an indirect store through an ArgX
12552 parameter was incorrectly applying the "implicit conversion rules" during
12553 the store. From the ACPI specification: "If the target is a method local
12555 argument (LocalX or ArgX), no conversion is performed and the result is
12556 stored directly to the target". The new behavior is to disable implicit
12557 conversion during ALL stores to an ArgX.
12559 Changed the behavior of the _PRW method scan to ignore any and all errors
12560 returned by a given _PRW. This prevents the scan from aborting from the
12561 failure of any single _PRW.
12563 Moved the runtime configuration parameters from the global init procedure
12565 static variables in acglobal.h. This will allow the host to override the
12566 default values easily.
12568 Code and Data Size: Current and previous core subsystem library sizes are
12569 shown below. These are the code and data sizes for the acpica.lib
12571 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12572 any ACPI driver or OSPM code. The debug version of the code includes the
12573 debug output trace mechanism and has a much larger code and data size.
12575 that these values will vary depending on the efficiency of the compiler
12577 the compiler options used during generation.
12580 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12581 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12583 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12584 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12587 2) iASL Compiler/Disassembler:
12589 iASL now fully disassembles SSDTs. However, External() statements are
12591 generated automatically for unresolved symbols at this time. This is a
12592 planned feature for future implementation.
12594 Fixed a scoping problem in the disassembler that occurs when the type of
12596 target of a Scope() operator is overridden. This problem caused an
12597 incorrectly nested internal namespace to be constructed.
12599 Any warnings or errors that are emitted during disassembly are now
12601 out automatically so that the resulting file can be recompiled without
12605 ----------------------------------------
12606 26 March 2004. Summary of changes for version 20040326:
12608 1) ACPI CA Core Subsystem:
12610 Implemented support for "wake" GPEs via interaction between GPEs and the
12611 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
12612 identified as a WAKE GPE and by default will no longer be enabled at
12613 runtime. Previously, we were blindly enabling all GPEs with a
12615 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
12617 believe this has been the cause of thousands of "spurious" GPEs on some
12620 This new GPE behavior is can be reverted to the original behavior (enable
12621 ALL GPEs at runtime) via a runtime flag.
12623 Fixed a problem where aliased control methods could not access objects
12624 properly. The proper scope within the namespace was not initialized
12625 (transferred to the target of the aliased method) before executing the
12628 Fixed a potential race condition on internal object deletion on the
12630 object in AcpiEvaluateObject.
12632 Integrated a fix for resource descriptors where both _MEM and _MTP were
12633 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
12634 wide, 0x0F instead of 0x03.)
12636 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
12639 fault in some cases.
12641 Updated Notify() values for debug statements in evmisc.c
12643 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
12645 Code and Data Size: Current and previous core subsystem library sizes are
12646 shown below. These are the code and data sizes for the acpica.lib
12648 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12649 any ACPI driver or OSPM code. The debug version of the code includes the
12650 debug output trace mechanism and has a much larger code and data size.
12652 that these values will vary depending on the efficiency of the compiler
12654 the compiler options used during generation.
12658 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12659 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12661 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12662 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12664 ----------------------------------------
12665 11 March 2004. Summary of changes for version 20040311:
12667 1) ACPI CA Core Subsystem:
12669 Fixed a problem where errors occurring during the parse phase of control
12670 method execution did not abort cleanly. For example, objects created and
12671 installed in the namespace were not deleted. This caused all subsequent
12672 invocations of the method to return the AE_ALREADY_EXISTS exception.
12674 Implemented a mechanism to force a control method to "Serialized"
12676 if the method attempts to create namespace objects. (The root of the
12677 AE_ALREADY_EXISTS problem.)
12679 Implemented support for the predefined _OSI "internal" control method.
12680 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
12682 "Windows 2001.1", and can be easily upgraded for new strings as
12684 This feature will allow "other" operating systems to execute the fully
12685 tested, "Windows" code path through the ASL code
12687 Global Lock Support: Now allows multiple acquires and releases with any
12688 internal thread. Removed concept of "owning thread" for this special
12691 Fixed two functions that were inappropriately declaring large objects on
12693 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
12695 method execution considerably.
12697 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
12698 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
12700 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
12701 defined on the machine.
12703 Implemented two runtime options: One to force all control method
12705 to "Serialized" to mimic Windows behavior, another to disable _OSI
12707 if it causes problems on a given machine.
12709 Code and Data Size: Current and previous core subsystem library sizes are
12710 shown below. These are the code and data sizes for the acpica.lib
12712 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12713 any ACPI driver or OSPM code. The debug version of the code includes the
12714 debug output trace mechanism and has a much larger code and data size.
12716 that these values will vary depending on the efficiency of the compiler
12718 the compiler options used during generation.
12721 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12722 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12724 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12725 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12727 2) iASL Compiler/Disassembler:
12729 Fixed an array size problem for FreeBSD that would cause the compiler to
12732 ----------------------------------------
12733 20 February 2004. Summary of changes for version 20040220:
12736 1) ACPI CA Core Subsystem:
12738 Implemented execution of _SxD methods for Device objects in the
12739 GetObjectInfo interface.
12741 Fixed calls to _SST method to pass the correct arguments.
12743 Added a call to _SST on wake to restore to "working" state.
12745 Check for End-Of-Buffer failure case in the WalkResources interface.
12747 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
12748 structures to the beginning of the file.
12750 After wake, clear GPE status register(s) before enabling GPEs.
12752 After wake, clear/enable power button. (Perhaps we should clear/enable
12754 fixed events upon wake.)
12756 Fixed a couple of possible memory leaks in the Namespace manager.
12758 Integrated latest acnetbsd.h file.
12760 ----------------------------------------
12761 11 February 2004. Summary of changes for version 20040211:
12764 1) ACPI CA Core Subsystem:
12766 Completed investigation and implementation of the call-by-reference
12767 mechanism for control method arguments.
12769 Fixed a problem where a store of an object into an indexed package could
12770 fail if the store occurs within a different method than the method that
12771 created the package.
12773 Fixed a problem where the ToDecimal operator could return incorrect
12776 Fixed a problem where the CopyObject operator could fail on some of the
12778 obscure objects (e.g., Reference objects.)
12780 Improved the output of the Debug object to display buffer, package, and
12783 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
12785 the expected result.
12787 Added permanent ACPI_REPORT_ERROR macros for all instances of the
12788 ACPI_AML_INTERNAL exception.
12790 Integrated latest version of acfreebsd.h
12792 ----------------------------------------
12793 16 January 2004. Summary of changes for version 20040116:
12795 The purpose of this release is primarily to update the copyright years in
12796 each module, thus causing a huge number of diffs. There are a few small
12797 functional changes, however.
12799 1) ACPI CA Core Subsystem:
12801 Improved error messages when there is a problem finding one or more of
12803 required base ACPI tables
12805 Reintroduced the definition of APIC_HEADER in actbl.h
12807 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
12809 Removed extraneous reference to NewObj in dsmthdat.c
12813 Fixed a problem introduced in December that disabled the correct
12815 of Resource Templates
12818 ----------------------------------------
12819 03 December 2003. Summary of changes for version 20031203:
12821 1) ACPI CA Core Subsystem:
12823 Changed the initialization of Operation Regions during subsystem
12824 init to perform two entire walks of the ACPI namespace; The first
12825 to initialize the regions themselves, the second to execute the
12826 _REG methods. This fixed some interdependencies across _REG
12827 methods found on some machines.
12829 Fixed a problem where a Store(Local0, Local1) could simply update
12830 the object reference count, and not create a new copy of the
12831 object if the Local1 is uninitialized.
12833 Implemented support for the _SST reserved method during sleep
12836 Implemented support to clear the SLP_TYP and SLP_EN bits when
12837 waking up, this is apparently required by some machines.
12839 When sleeping, clear the wake status only if SleepState is not S5.
12841 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
12842 pointer arithmetic advanced a string pointer too far.
12844 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
12845 could be returned if the requested table has not been loaded.
12847 Within the support for IRQ resources, restructured the handling of
12848 the active and edge/level bits.
12850 Fixed a few problems in AcpiPsxExecute() where memory could be
12851 leaked under certain error conditions.
12853 Improved error messages for the cases where the ACPI mode could
12856 Code and Data Size: Current and previous core subsystem library
12857 sizes are shown below. These are the code and data sizes for the
12858 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12859 these values do not include any ACPI driver or OSPM code. The
12860 debug version of the code includes the debug output trace
12861 mechanism and has a much larger code and data size. Note that
12862 these values will vary depending on the efficiency of the compiler
12863 and the compiler options used during generation.
12865 Previous Release (20031029):
12866 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12867 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12869 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12870 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12872 2) iASL Compiler/Disassembler:
12874 Implemented a fix for the iASL disassembler where a bad index was
12875 generated. This was most noticeable on 64-bit platforms
12878 ----------------------------------------
12879 29 October 2003. Summary of changes for version 20031029:
12881 1) ACPI CA Core Subsystem:
12884 Fixed a problem where a level-triggered GPE with an associated
12885 _Lxx control method was incorrectly cleared twice.
12887 Fixed a problem with the Field support code where an access can
12888 occur beyond the end-of-region if the field is non-aligned but
12889 extends to the very end of the parent region (resulted in an
12890 AE_AML_REGION_LIMIT exception.)
12892 Fixed a problem with ACPI Fixed Events where an RT Clock handler
12893 would not get invoked on an RTC event. The RTC event bitmasks for
12894 the PM1 registers were not being initialized properly.
12896 Implemented support for executing _STA and _INI methods for
12897 Processor objects. Although this is currently not part of the
12898 ACPI specification, there is existing ASL code that depends on the
12899 init-time execution of these methods.
12901 Implemented and deployed a GetDescriptorName function to decode
12902 the various types of internal descriptors. Guards against null
12903 descriptors during debug output also.
12905 Implemented and deployed a GetNodeName function to extract the 4-
12906 character namespace node name. This function simplifies the debug
12907 and error output, as well as guarding against null pointers during
12910 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
12911 simplify the debug and error output of 64-bit integers. This
12912 macro replaces the HIDWORD and LODWORD macros for dumping these
12915 Updated the implementation of the Stall() operator to only call
12916 AcpiOsStall(), and also return an error if the operand is larger
12917 than 255. This preserves the required behavior of not
12918 relinquishing the processor, as would happen if AcpiOsSleep() was
12919 called for "long stalls".
12921 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
12922 initialized are now treated as NOOPs.
12924 Cleaned up a handful of warnings during 64-bit generation.
12926 Fixed a reported error where and incorrect GPE number was passed
12927 to the GPE dispatch handler. This value is only used for error
12928 output, however. Used this opportunity to clean up and streamline
12929 the GPE dispatch code.
12931 Code and Data Size: Current and previous core subsystem library
12932 sizes are shown below. These are the code and data sizes for the
12933 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12934 these values do not include any ACPI driver or OSPM code. The
12936 debug version of the code includes the debug output trace
12937 mechanism and has a much larger code and data size. Note that
12938 these values will vary depending on the efficiency of the compiler
12939 and the compiler options used during generation.
12941 Previous Release (20031002):
12942 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12943 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12945 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12946 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12949 2) iASL Compiler/Disassembler:
12951 Updated the iASL compiler to return an error if the operand to the
12952 Stall() operator is larger than 255.
12955 ----------------------------------------
12956 02 October 2003. Summary of changes for version 20031002:
12959 1) ACPI CA Core Subsystem:
12961 Fixed a problem with Index Fields where the index was not
12962 incremented for fields that require multiple writes to the
12963 index/data registers (Fields that are wider than the data
12966 Fixed a problem with all Field objects where a write could go
12967 beyond the end-of-field if the field was larger than the access
12968 granularity and therefore required multiple writes to complete the
12969 request. An extra write beyond the end of the field could happen
12972 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
12973 would incorrectly be returned if the width of the Data Register
12974 was larger than the specified field access width.
12976 Completed fixes for LoadTable() and Unload() and verified their
12977 operation. Implemented full support for the "DdbHandle" object
12978 throughout the ACPI CA subsystem.
12980 Implemented full support for the MADT and ECDT tables in the ACPI
12981 CA header files. Even though these tables are not directly
12982 consumed by ACPI CA, the header definitions are useful for ACPI
12985 Integrated resource descriptor fixes posted to the Linux ACPI
12986 list. This included checks for minimum descriptor length, and
12987 support for trailing NULL strings within descriptors that have
12988 optional string elements.
12990 Code and Data Size: Current and previous core subsystem library
12991 sizes are shown below. These are the code and data sizes for the
12992 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12993 these values do not include any ACPI driver or OSPM code. The
12994 debug version of the code includes the debug output trace
12995 mechanism and has a much larger code and data size. Note that
12996 these values will vary depending on the efficiency of the compiler
12997 and the compiler options used during generation.
12999 Previous Release (20030918):
13000 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13001 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13003 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13004 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13009 Implemented detection of non-ASCII characters within the input
13010 source ASL file. This catches attempts to compile binary (AML)
13011 files early in the compile, with an informative error message.
13013 Fixed a problem where the disassembler would fault if the output
13014 filename could not be generated or if the output file could not be
13017 ----------------------------------------
13018 18 September 2003. Summary of changes for version 20030918:
13021 1) ACPI CA Core Subsystem:
13023 Found and fixed a longstanding problem with the late execution of
13024 the various deferred AML opcodes (such as Operation Regions,
13025 Buffer Fields, Buffers, and Packages). If the name string
13026 specified for the name of the new object placed the object in a
13027 scope other than the current scope, the initialization/execution
13028 of the opcode failed. The solution to this problem was to
13029 implement a mechanism where the late execution of such opcodes
13030 does not attempt to lookup/create the name a second time in an
13031 incorrect scope. This fixes the "region size computed
13032 incorrectly" problem.
13034 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13035 Global Lock AE_BAD_PARAMETER error.
13037 Fixed several 64-bit issues with prototypes, casting and data
13040 Removed duplicate prototype from acdisasm.h
13042 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13044 Code and Data Size: Current and previous core subsystem library
13045 sizes are shown below. These are the code and data sizes for the
13046 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13047 these values do not include any ACPI driver or OSPM code. The
13048 debug version of the code includes the debug output trace
13049 mechanism and has a much larger code and data size. Note that
13050 these values will vary depending on the efficiency of the compiler
13051 and the compiler options used during generation.
13055 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13056 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13058 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13059 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13064 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13065 correct sleep time in seconds.
13067 ----------------------------------------
13068 14 July 2003. Summary of changes for version 20030619:
13070 1) ACPI CA Core Subsystem:
13072 Parse SSDTs in order discovered, as opposed to reverse order
13075 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13082 Dynamically allocate SDT list (suggested by Andi Kleen)
13084 proc function return value cleanups (Andi Kleen)
13086 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13088 Make it so acpismp=force works (reported by Andrew Morton)
13091 ----------------------------------------
13092 19 June 2003. Summary of changes for version 20030619:
13094 1) ACPI CA Core Subsystem:
13096 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13098 Do not acquire a semaphore in the S5 shutdown path.
13100 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13102 Fix sleep/stall code reversal. (Andi Kleen)
13104 Revert a change having to do with control method calling
13109 acpiphp update (Takayoshi Kochi)
13111 Export acpi_disabled for sonypi (Stelian Pop)
13113 Mention acpismp=force in config help
13115 Re-add acpitable.c and acpismp=force. This improves backwards
13117 compatibility and also cleans up the code to a significant degree.
13119 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13121 ----------------------------------------
13122 22 May 2003. Summary of changes for version 20030522:
13124 1) ACPI CA Core Subsystem:
13126 Found and fixed a reported problem where an AE_NOT_FOUND error
13127 occurred occasionally during _BST evaluation. This turned out to
13128 be an Owner ID allocation issue where a called method did not get
13129 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13130 ID UINT16 would wraparound so that the ID would be the same as the
13131 caller's and the called method would delete the caller's
13134 Implemented extended error reporting for control methods that are
13135 aborted due to a run-time exception. Output includes the exact
13136 AML instruction that caused the method abort, a dump of the method
13137 locals and arguments at the time of the abort, and a trace of all
13138 nested control method calls.
13140 Modified the interpreter to allow the creation of buffers of zero
13141 length from the AML code. Implemented new code to ensure that no
13142 attempt is made to actually allocate a memory buffer (of length
13143 zero) - instead, a simple buffer object with a NULL buffer pointer
13144 and length zero is created. A warning is no longer issued when
13145 the AML attempts to create a zero-length buffer.
13147 Implemented a workaround for the "leading asterisk issue" in
13148 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13149 asterisk is automatically removed if present in any HID, UID, or
13150 CID strings. The iASL compiler will still flag this asterisk as
13153 Implemented full support for _CID methods that return a package of
13154 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
13155 now additionally returns a device _CID list if present. This
13156 required a change to the external interface in order to pass an
13157 ACPI_BUFFER object as a parameter since the _CID list is of
13160 Fixed a problem with the new AE_SAME_HANDLER exception where
13161 handler initialization code did not know about this exception.
13163 Code and Data Size: Current and previous core subsystem library
13164 sizes are shown below. These are the code and data sizes for the
13165 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13166 these values do not include any ACPI driver or OSPM code. The
13167 debug version of the code includes the debug output trace
13168 mechanism and has a much larger code and data size. Note that
13169 these values will vary depending on the efficiency of the compiler
13170 and the compiler options used during generation.
13172 Previous Release (20030509):
13173 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13174 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13176 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13177 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13182 Fixed a bug in which we would reinitialize the ACPI interrupt
13183 after it was already working, thus disabling all ACPI and the IRQs
13184 for any other device sharing the interrupt. (Thanks to Stian
13187 Toshiba driver update (John Belmonte)
13189 Return only 0 or 1 for our interrupt handler status (Andrew
13195 Fixed a reported problem where multiple (nested) ElseIf()
13196 statements were not handled correctly by the compiler, resulting
13197 in incorrect warnings and incorrect AML code. This was a problem
13198 in both the ASL parser and the code generator.
13203 Added changes to existing interfaces, new exception codes, and new
13204 text concerning reference count object management versus garbage
13207 ----------------------------------------
13208 09 May 2003. Summary of changes for version 20030509.
13211 1) ACPI CA Core Subsystem:
13213 Changed the subsystem initialization sequence to hold off
13214 installation of address space handlers until the hardware has been
13215 initialized and the system has entered ACPI mode. This is because
13216 the installation of space handlers can cause _REG methods to be
13217 run. Previously, the _REG methods could potentially be run before
13218 ACPI mode was enabled.
13220 Fixed some memory leak issues related to address space handler and
13221 notify handler installation. There were some problems with the
13222 reference count mechanism caused by the fact that the handler
13223 objects are shared across several namespace objects.
13225 Fixed a reported problem where reference counts within the
13226 namespace were not properly updated when named objects created by
13227 method execution were deleted.
13229 Fixed a reported problem where multiple SSDTs caused a deletion
13230 issue during subsystem termination. Restructured the table data
13231 structures to simplify the linked lists and the related code.
13233 Fixed a problem where the table ID associated with secondary
13234 tables (SSDTs) was not being propagated into the namespace objects
13235 created by those tables. This would only present a problem for
13236 tables that are unloaded at run-time, however.
13238 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
13239 type as the length parameter (instead of UINT32).
13241 Solved a long-standing problem where an ALREADY_EXISTS error
13242 appears on various systems. This problem could happen when there
13243 are multiple PCI_Config operation regions under a single PCI root
13244 bus. This doesn't happen very frequently, but there are some
13245 systems that do this in the ASL.
13247 Fixed a reported problem where the internal DeleteNode function
13248 was incorrectly handling the case where a namespace node was the
13249 first in the parent's child list, and had additional peers (not
13250 the only child, but first in the list of children.)
13252 Code and Data Size: Current core subsystem library sizes are shown
13253 below. These are the code and data sizes for the acpica.lib
13254 produced by the Microsoft Visual C++ 6.0 compiler, and these
13255 values do not include any ACPI driver or OSPM code. The debug
13256 version of the code includes the debug output trace mechanism and
13257 has a much larger code and data size. Note that these values will
13258 vary depending on the efficiency of the compiler and the compiler
13259 options used during generation.
13262 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13263 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13265 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13266 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13271 Allow ":" in OS override string (Ducrot Bruno)
13273 Kobject fix (Greg KH)
13276 3 iASL Compiler/Disassembler:
13278 Fixed a problem in the generation of the C source code files (AML
13279 is emitted in C source statements for BIOS inclusion) where the
13280 Ascii dump that appears within a C comment at the end of each line
13281 could cause a compile time error if the AML sequence happens to
13282 have an open comment or close comment sequence embedded.
13285 ----------------------------------------
13286 24 April 2003. Summary of changes for version 20030424.
13289 1) ACPI CA Core Subsystem:
13291 Support for big-endian systems has been implemented. Most of the
13292 support has been invisibly added behind big-endian versions of the
13293 ACPI_MOVE_* macros.
13295 Fixed a problem in AcpiHwDisableGpeBlock() and
13296 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
13297 low level hardware write routine. The offset parameter was
13298 actually eliminated from the low level read/write routines because
13299 they had become obsolete.
13301 Fixed a problem where a handler object was deleted twice during
13302 the removal of a fixed event handler.
13307 A fix for SMP systems with link devices was contributed by
13311 (2.5) Return whether we handled the interrupt in our IRQ handler.
13312 (Linux ISRs no longer return void, so we can propagate the handler
13313 return value from the ACPI CA core back to the OS.)
13319 The ACPI CA Programmer Reference has been updated to reflect new
13320 interfaces and changes to existing interfaces.
13322 ----------------------------------------
13323 28 March 2003. Summary of changes for version 20030328.
13325 1) ACPI CA Core Subsystem:
13327 The GPE Block Device support has been completed. New interfaces
13328 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
13329 interfaces (enable, disable, clear, getstatus) have been split
13330 into separate interfaces for Fixed Events and General Purpose
13331 Events (GPEs) in order to support GPE Block Devices properly.
13333 Fixed a problem where the error message "Failed to acquire
13334 semaphore" would appear during operations on the embedded
13337 Code and Data Size: Current core subsystem library sizes are shown
13338 below. These are the code and data sizes for the acpica.lib
13339 produced by the Microsoft Visual C++ 6.0 compiler, and these
13340 values do not include any ACPI driver or OSPM code. The debug
13341 version of the code includes the debug output trace mechanism and
13342 has a much larger code and data size. Note that these values will
13343 vary depending on the efficiency of the compiler and the compiler
13344 options used during generation.
13347 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13348 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13350 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13351 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13354 ----------------------------------------
13355 28 February 2003. Summary of changes for version 20030228.
13358 1) ACPI CA Core Subsystem:
13360 The GPE handling and dispatch code has been completely overhauled
13361 in preparation for support of GPE Block Devices (ID ACPI0006).
13362 This affects internal data structures and code only; there should
13363 be no differences visible externally. One new file has been
13366 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
13367 fields that are used to determine the GPE block lengths. The
13368 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
13369 structures are ignored. This is per the ACPI specification but it
13370 isn't very clear. The full 256 Block 0/1 GPEs are now supported
13371 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
13373 In the SCI interrupt handler, removed the read of the PM1_CONTROL
13374 register to look at the SCI_EN bit. On some machines, this read
13375 causes an SMI event and greatly slows down SCI events. (This may
13376 in fact be the cause of slow battery status response on some
13379 Fixed a problem where a store of a NULL string to a package object
13380 could cause the premature deletion of the object. This was seen
13381 during execution of the battery _BIF method on some systems,
13382 resulting in no battery data being returned.
13384 Added AcpiWalkResources interface to simplify parsing of resource
13387 Code and Data Size: Current core subsystem library sizes are shown
13388 below. These are the code and data sizes for the acpica.lib
13389 produced by the Microsoft Visual C++ 6.0 compiler, and these
13390 values do not include any ACPI driver or OSPM code. The debug
13391 version of the code includes the debug output trace mechanism and
13392 has a much larger code and data size. Note that these values will
13393 vary depending on the efficiency of the compiler and the compiler
13394 options used during generation.
13397 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13398 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13400 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13401 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13406 S3 fixes (Ole Rohne)
13408 Update ACPI PHP driver with to use new acpi_walk_resource API
13411 Add S4BIOS support (Pavel Machek)
13413 Map in entire table before performing checksum (John Stultz)
13415 Expand the mem= cmdline to allow the specification of reserved and
13416 ACPI DATA blocks (Pavel Machek)
13418 Never use ACPI on VISWS
13420 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
13422 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
13423 causing us to think that some systems support C2 when they really
13426 Do not count processor objects for non-present CPUs (Thanks to
13432 Fixed a problem where ASL include files could not be found and
13435 Added support for the _PDC reserved name.
13438 ----------------------------------------
13439 22 January 2003. Summary of changes for version 20030122.
13442 1) ACPI CA Core Subsystem:
13444 Added a check for constructs of the form: Store (Local0, Local0)
13445 where Local0 is not initialized. Apparently, some BIOS
13446 programmers believe that this is a NOOP. Since this store doesn't
13447 do anything anyway, the new prototype behavior will ignore this
13448 error. This is a case where we can relax the strict checking in
13449 the interpreter in the name of compatibility.
13454 The AcpiSrc Source Conversion Utility has been released with the
13455 Linux package for the first time. This is the utility that is
13456 used to convert the ACPI CA base source code to the Linux version.
13458 (Both) Handle P_BLK lengths shorter than 6 more gracefully
13460 (Both) Move more headers to include/acpi, and delete an unused
13463 (Both) Move drivers/acpi/include directory to include/acpi
13465 (Both) Boot functions don't use cmdline, so don't pass it around
13467 (Both) Remove include of unused header (Adrian Bunk)
13469 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
13471 former now also includes the latter, acpiphp.h only needs the one,
13474 (2.5) Make it possible to select method of bios restoring after S3
13475 resume. [=> no more ugly ifdefs] (Pavel Machek)
13477 (2.5) Make proc write interfaces work (Pavel Machek)
13479 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
13481 (2.5) Break out ACPI Perf code into its own module, under cpufreq
13482 (Dominik Brodowski)
13484 (2.4) S4BIOS support (Ducrot Bruno)
13486 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
13492 Added support to disassemble SSDT and PSDTs.
13494 Implemented support to obtain SSDTs from the Windows registry if
13498 ----------------------------------------
13499 09 January 2003. Summary of changes for version 20030109.
13501 1) ACPI CA Core Subsystem:
13503 Changed the behavior of the internal Buffer-to-String conversion
13504 function. The current ACPI specification states that the contents
13505 of the buffer are "converted to a string of two-character
13506 hexadecimal numbers, each separated by a space". Unfortunately,
13507 this definition is not backwards compatible with existing ACPI 1.0
13508 implementations (although the behavior was not defined in the ACPI
13509 1.0 specification). The new behavior simply copies data from the
13510 buffer to the string until a null character is found or the end of
13511 the buffer is reached. The new String object is always null
13512 terminated. This problem was seen during the generation of _BIF
13513 battery data where incorrect strings were returned for battery
13514 type, etc. This will also require an errata to the ACPI
13517 Renamed all instances of NATIVE_UINT and NATIVE_INT to
13518 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
13520 Copyright in all module headers (both Linux and non-Linux) has be
13523 Code and Data Size: Current core subsystem library sizes are shown
13524 below. These are the code and data sizes for the acpica.lib
13525 produced by the Microsoft Visual C++ 6.0 compiler, and these
13526 values do not include any ACPI driver or OSPM code. The debug
13527 version of the code includes the debug output trace mechanism and
13528 has a much larger code and data size. Note that these values will
13529 vary depending on the efficiency of the compiler and the compiler
13530 options used during generation.
13533 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13534 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13536 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13537 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13542 Fixed an oops on module insertion/removal (Matthew Tippett)
13544 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
13546 (2.5) Replace pr_debug (Randy Dunlap)
13548 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
13550 (Both) Eliminate spawning of thread from timer callback, in favor
13553 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
13555 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
13557 (Both) Add missing statics to button.c (Pavel Machek)
13559 Several changes have been made to the source code translation
13560 utility that generates the Linux Code in order to make the code
13563 All typedefs on structs and unions have been removed in keeping
13564 with the Linux coding style.
13566 Removed the non-Linux SourceSafe module revision number from each
13569 Completed major overhaul of symbols to be lowercased for linux.
13570 Doubled the number of symbols that are lowercased.
13572 Fixed a problem where identifiers within procedure headers and
13573 within quotes were not fully lower cased (they were left with a
13576 Some C macros whose only purpose is to allow the generation of 16-
13577 bit code are now completely removed in the Linux code, increasing
13578 readability and maintainability.
13580 ----------------------------------------
13582 12 December 2002. Summary of changes for version 20021212.
13585 1) ACPI CA Core Subsystem:
13587 Fixed a problem where the creation of a zero-length AML Buffer
13588 would cause a fault.
13590 Fixed a problem where a Buffer object that pointed to a static AML
13591 buffer (in an ACPI table) could inadvertently be deleted, causing
13594 Fixed a problem where a user buffer (passed in to the external
13595 ACPI CA interfaces) could be overwritten if the buffer was too
13596 small to complete the operation, causing memory corruption.
13598 Fixed a problem in the Buffer-to-String conversion code where a
13599 string of length one was always returned, regardless of the size
13600 of the input Buffer object.
13602 Removed the NATIVE_CHAR data type across the entire source due to
13603 lack of need and lack of consistent use.
13605 Code and Data Size: Current core subsystem library sizes are shown
13606 below. These are the code and data sizes for the acpica.lib
13607 produced by the Microsoft Visual C++ 6.0 compiler, and these
13608 values do not include any ACPI driver or OSPM code. The debug
13609 version of the code includes the debug output trace mechanism and
13610 has a much larger code and data size. Note that these values will
13611 vary depending on the efficiency of the compiler and the compiler
13612 options used during generation.
13615 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13616 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13618 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13619 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13622 ----------------------------------------
13623 05 December 2002. Summary of changes for version 20021205.
13625 1) ACPI CA Core Subsystem:
13627 Fixed a problem where a store to a String or Buffer object could
13628 cause corruption of the DSDT if the object type being stored was
13629 the same as the target object type and the length of the object
13630 being stored was equal to or smaller than the original (existing)
13631 target object. This was seen to cause corruption of battery _BIF
13632 buffers if the _BIF method modified the buffer on the fly.
13634 Fixed a problem where an internal error was generated if a control
13635 method invocation was used in an OperationRegion, Buffer, or
13636 Package declaration. This was caused by the deferred parsing of
13637 the control method and thus the deferred creation of the internal
13638 method object. The solution to this problem was to create the
13639 internal method object at the moment the method is encountered in
13640 the first pass - so that subsequent references to the method will
13641 able to obtain the required parameter count and thus properly
13642 parse the method invocation. This problem presented itself as an
13643 AE_AML_INTERNAL during the pass 1 parse phase during table load.
13645 Fixed a problem where the internal String object copy routine did
13646 not always allocate sufficient memory for the target String object
13647 and caused memory corruption. This problem was seen to cause
13648 "Allocation already present in list!" errors as memory allocation
13651 Implemented a new function for the evaluation of namespace objects
13652 that allows the specification of the allowable return object
13653 types. This simplifies a lot of code that checks for a return
13654 object of one or more specific objects returned from the
13655 evaluation (such as _STA, etc.) This may become and external
13656 function if it would be useful to ACPI-related drivers.
13658 Completed another round of prefixing #defines with "ACPI_" for
13661 Completed additional code restructuring to allow more modular
13662 linking for iASL compiler and AcpiExec. Several files were split
13663 creating new files. New files: nsparse.c dsinit.c evgpe.c
13665 Implemented an abort mechanism to terminate an executing control
13666 method via the AML debugger. This feature is useful for debugging
13667 control methods that depend (wait) for specific hardware
13670 Code and Data Size: Current core subsystem library sizes are shown
13671 below. These are the code and data sizes for the acpica.lib
13672 produced by the Microsoft Visual C++ 6.0 compiler, and these
13673 values do not include any ACPI driver or OSPM code. The debug
13674 version of the code includes the debug output trace mechanism and
13675 has a much larger code and data size. Note that these values will
13676 vary depending on the efficiency of the compiler and the compiler
13677 options used during generation.
13680 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13681 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13683 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13684 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13687 2) iASL Compiler/Disassembler
13689 Fixed a compiler code generation problem for "Interrupt" Resource
13690 Descriptors. If specified in the ASL, the optional "Resource
13691 Source Index" and "Resource Source" fields were not inserted into
13692 the correct location within the AML resource descriptor, creating
13693 an invalid descriptor.
13695 Fixed a disassembler problem for "Interrupt" resource descriptors.
13696 The optional "Resource Source Index" and "Resource Source" fields
13700 ----------------------------------------
13701 22 November 2002. Summary of changes for version 20021122.
13704 1) ACPI CA Core Subsystem:
13706 Fixed a reported problem where an object stored to a Method Local
13707 or Arg was not copied to a new object during the store - the
13708 object pointer was simply copied to the Local/Arg. This caused
13709 all subsequent operations on the Local/Arg to also affect the
13710 original source of the store operation.
13712 Fixed a problem where a store operation to a Method Local or Arg
13713 was not completed properly if the Local/Arg contained a reference
13714 (from RefOf) to a named field. The general-purpose store-to-
13715 namespace-node code is now used so that this case is handled
13718 Fixed a problem where the internal object copy routine would cause
13719 a protection fault if the object being copied was a Package and
13720 contained either 1) a NULL package element or 2) a nested sub-
13723 Fixed a problem with the GPE initialization that resulted from an
13724 ambiguity in the ACPI specification. One section of the
13725 specification states that both the address and length of the GPE
13726 block must be zero if the block is not supported. Another section
13727 implies that only the address need be zero if the block is not
13728 supported. The code has been changed so that both the address and
13729 the length must be non-zero to indicate a valid GPE block (i.e.,
13730 if either the address or the length is zero, the GPE block is
13733 Code and Data Size: Current core subsystem library sizes are shown
13734 below. These are the code and data sizes for the acpica.lib
13735 produced by the Microsoft Visual C++ 6.0 compiler, and these
13736 values do not include any ACPI driver or OSPM code. The debug
13737 version of the code includes the debug output trace mechanism and
13738 has a much larger code and data size. Note that these values will
13739 vary depending on the efficiency of the compiler and the compiler
13740 options used during generation.
13743 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13744 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13746 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13747 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13752 Cleaned up EC driver. Exported an external EC read/write
13753 interface. By going through this, other drivers (most notably
13754 sonypi) will be able to serialize access to the EC.
13757 3) iASL Compiler/Disassembler
13759 Implemented support to optionally generate include files for both
13760 ASM and C (the -i switch). This simplifies BIOS development by
13761 automatically creating include files that contain external
13762 declarations for the symbols that are created within the
13764 (optionally generated) ASM and C AML source files.
13767 ----------------------------------------
13768 15 November 2002. Summary of changes for version 20021115.
13770 1) ACPI CA Core Subsystem:
13772 Fixed a memory leak problem where an error during resolution of
13774 method arguments during a method invocation from another method
13775 failed to cleanup properly by deleting all successfully resolved
13778 Fixed a problem where the target of the Index() operator was not
13779 correctly constructed if the source object was a package. This
13780 problem has not been detected because the use of a target operand
13781 with Index() is very rare.
13783 Fixed a problem with the Index() operator where an attempt was
13784 made to delete the operand objects twice.
13786 Fixed a problem where an attempt was made to delete an operand
13787 twice during execution of the CondRefOf() operator if the target
13790 Implemented the first of perhaps several internal create object
13791 functions that create and initialize a specific object type. This
13792 consolidates duplicated code wherever the object is created, thus
13793 shrinking the size of the subsystem.
13795 Implemented improved debug/error messages for errors that occur
13796 during nested method invocations. All executing method pathnames
13797 are displayed (with the error) as the call stack is unwound - thus
13800 Fixed a problem introduced in the 10/02 release that caused
13801 premature deletion of a buffer object if a buffer was used as an
13802 ASL operand where an integer operand is required (Thus causing an
13803 implicit object conversion from Buffer to Integer.) The change in
13804 the 10/02 release was attempting to fix a memory leak (albeit
13807 Code and Data Size: Current core subsystem library sizes are shown
13808 below. These are the code and data sizes for the acpica.lib
13809 produced by the Microsoft Visual C++ 6.0 compiler, and these
13810 values do not include any ACPI driver or OSPM code. The debug
13811 version of the code includes the debug output trace mechanism and
13812 has a much larger code and data size. Note that these values will
13813 vary depending on the efficiency of the compiler and the compiler
13814 options used during generation.
13817 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13818 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13820 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13821 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13826 Changed the implementation of the ACPI semaphores to use down()
13827 instead of down_interruptable(). It is important that the
13828 execution of ACPI control methods not be interrupted by signals.
13829 Methods must run to completion, or the system may be left in an
13830 unknown/unstable state.
13832 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
13836 3) iASL Compiler/Disassembler
13839 Changed the default location of output files. All output files
13840 are now placed in the current directory by default instead of in
13841 the directory of the source file. This change may affect some
13842 existing makefiles, but it brings the behavior of the compiler in
13843 line with other similar tools. The location of the output files
13844 can be overridden with the -p command line switch.
13847 ----------------------------------------
13848 11 November 2002. Summary of changes for version 20021111.
13851 0) ACPI Specification 2.0B is released and is now available at:
13852 http://www.acpi.info/index.html
13855 1) ACPI CA Core Subsystem:
13857 Implemented support for the ACPI 2.0 SMBus Operation Regions.
13858 This includes the early detection and handoff of the request to
13859 the SMBus region handler (avoiding all of the complex field
13860 support code), and support for the bidirectional return packet
13861 from an SMBus write operation. This paves the way for the
13862 development of SMBus drivers in each host operating system.
13864 Fixed a problem where the semaphore WAIT_FOREVER constant was
13865 defined as 32 bits, but must be 16 bits according to the ACPI
13866 specification. This had the side effect of causing ASL
13867 Mutex/Event timeouts even though the ASL code requested a wait
13868 forever. Changed all internal references to the ACPI timeout
13869 parameter to 16 bits to prevent future problems. Changed the name
13870 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
13872 Code and Data Size: Current core subsystem library sizes are shown
13873 below. These are the code and data sizes for the acpica.lib
13874 produced by the Microsoft Visual C++ 6.0 compiler, and these
13875 values do not include any ACPI driver or OSPM code. The debug
13876 version of the code includes the debug output trace mechanism and
13877 has a much larger code and data size. Note that these values will
13878 vary depending on the efficiency of the compiler and the compiler
13879 options used during generation.
13882 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13883 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13885 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13886 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13891 Module loading/unloading fixes (John Cagle)
13894 3) iASL Compiler/Disassembler
13896 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
13898 Implemented support for the disassembly of all SMBus protocol
13899 keywords (SMBQuick, SMBWord, etc.)
13901 ----------------------------------------
13902 01 November 2002. Summary of changes for version 20021101.
13905 1) ACPI CA Core Subsystem:
13907 Fixed a problem where platforms that have a GPE1 block but no GPE0
13908 block were not handled correctly. This resulted in a "GPE
13909 overlap" error message. GPE0 is no longer required.
13911 Removed code added in the previous release that inserted nodes
13912 into the namespace in alphabetical order. This caused some side-
13913 effects on various machines. The root cause of the problem is
13914 still under investigation since in theory, the internal ordering
13915 of the namespace nodes should not matter.
13918 Enhanced error reporting for the case where a named object is not
13919 found during control method execution. The full ACPI namepath
13920 (name reference) of the object that was not found is displayed in
13923 Note: as a result of the overhaul of the namespace object types in
13924 the previous release, the namespace nodes for the predefined
13925 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
13926 instead of ACPI_TYPE_ANY. This simplifies the namespace
13927 management code but may affect code that walks the namespace tree
13928 looking for specific object types.
13930 Code and Data Size: Current core subsystem library sizes are shown
13931 below. These are the code and data sizes for the acpica.lib
13932 produced by the Microsoft Visual C++ 6.0 compiler, and these
13933 values do not include any ACPI driver or OSPM code. The debug
13934 version of the code includes the debug output trace mechanism and
13935 has a much larger code and data size. Note that these values will
13936 vary depending on the efficiency of the compiler and the compiler
13937 options used during generation.
13940 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13941 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13943 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13944 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13949 Fixed a problem introduced in the previous release where the
13950 Processor and Thermal objects were not recognized and installed in
13951 /proc. This was related to the scope type change described above.
13954 3) iASL Compiler/Disassembler
13956 Implemented the -g option to get all of the required ACPI tables
13957 from the registry and save them to files (Windows version of the
13958 compiler only.) The required tables are the FADT, FACS, and DSDT.
13960 Added ACPI table checksum validation during table disassembly in
13961 order to catch corrupted tables.
13964 ----------------------------------------
13965 22 October 2002. Summary of changes for version 20021022.
13967 1) ACPI CA Core Subsystem:
13969 Implemented a restriction on the Scope operator that the target
13970 must already exist in the namespace at the time the operator is
13971 encountered (during table load or method execution). In other
13972 words, forward references are not allowed and Scope() cannot
13973 create a new object. This changes the previous behavior where the
13974 interpreter would create the name if not found. This new behavior
13975 correctly enables the search-to-root algorithm during namespace
13976 lookup of the target name. Because of this upsearch, this fixes
13977 the known Compaq _SB_.OKEC problem and makes both the AML
13978 interpreter and iASL compiler compatible with other ACPI
13981 Completed a major overhaul of the internal ACPI object types for
13982 the ACPI Namespace and the associated operand objects. Many of
13983 these types had become obsolete with the introduction of the two-
13984 pass namespace load. This cleanup simplifies the code and makes
13985 the entire namespace load mechanism much clearer and easier to
13988 Improved debug output for tracking scope opening/closing to help
13989 diagnose scoping issues. The old scope name as well as the new
13990 scope name are displayed. Also improved error messages for
13991 problems with ASL Mutex objects and error messages for GPE
13994 Cleaned up the namespace dump code, removed obsolete code.
13996 All string output (for all namespace/object dumps) now uses the
13997 common ACPI string output procedure which handles escapes properly
13998 and does not emit non-printable characters.
14000 Fixed some issues with constants in the 64-bit version of the
14001 local C library (utclib.c)
14006 EC Driver: No longer attempts to acquire the Global Lock at
14010 3) iASL Compiler/Disassembler
14012 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14013 2 opcodes outside of a control method. This means that the
14014 "executable" operators (versus the "namespace" operators) cannot
14015 be used at the table level; they can only be used within a control
14018 Implemented the restriction on the Scope() operator where the
14019 target must already exist in the namespace at the time the
14020 operator is encountered (during ASL compilation). In other words,
14021 forward references are not allowed and Scope() cannot create a new
14022 object. This makes the iASL compiler compatible with other ACPI
14023 implementations and makes the Scope() implementation adhere to the
14024 ACPI specification.
14026 Fixed a problem where namepath optimization for the Alias operator
14027 was optimizing the wrong path (of the two namepaths.) This caused
14028 a "Missing alias link" error message.
14030 Fixed a problem where an "unknown reserved name" warning could be
14031 incorrectly generated for names like "_SB" when the trailing
14032 underscore is not used in the original ASL.
14034 Fixed a problem where the reserved name check did not handle
14035 NamePaths with multiple NameSegs correctly. The first nameseg of
14036 the NamePath was examined instead of the last NameSeg.
14039 ----------------------------------------
14041 02 October 2002. Summary of changes for this release.
14044 1) ACPI CA Core Subsystem version 20021002:
14046 Fixed a problem where a store/copy of a string to an existing
14047 string did not always set the string length properly in the String
14050 Fixed a reported problem with the ToString operator where the
14051 behavior was identical to the ToHexString operator instead of just
14052 simply converting a raw buffer to a string data type.
14054 Fixed a problem where CopyObject and the other "explicit"
14055 conversion operators were not updating the internal namespace node
14056 type as part of the store operation.
14058 Fixed a memory leak during implicit source operand conversion
14059 where the original object was not deleted if it was converted to a
14060 new object of a different type.
14062 Enhanced error messages for all problems associated with namespace
14063 lookups. Common procedure generates and prints the lookup name as
14064 well as the formatted status.
14066 Completed implementation of a new design for the Alias support
14067 within the namespace. The existing design did not handle the case
14068 where a new object was assigned to one of the two names due to the
14069 use of an explicit conversion operator, resulting in the two names
14070 pointing to two different objects. The new design simply points
14071 the Alias name to the original name node - not to the object.
14072 This results in a level of indirection that must be handled in the
14073 name resolution mechanism.
14075 Code and Data Size: Current core subsystem library sizes are shown
14076 below. These are the code and data sizes for the acpica.lib
14077 produced by the Microsoft Visual C++ 6.0 compiler, and these
14078 values do not include any ACPI driver or OSPM code. The debug
14079 version of the code includes the debug output trace mechanism and
14080 has a larger code and data size. Note that these values will vary
14081 depending on the efficiency of the compiler and the compiler
14082 options used during generation.
14085 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14086 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14088 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14089 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14094 Initialize thermal driver's timer before it is used. (Knut
14097 Allow handling negative celsius values. (Kochi Takayoshi)
14099 Fix thermal management and make trip points. R/W (Pavel Machek)
14101 Fix /proc/acpi/sleep. (P. Christeas)
14103 IA64 fixes. (David Mosberger)
14105 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14107 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14111 3) iASL Compiler/Disassembler
14113 Clarified some warning/error messages.
14116 ----------------------------------------
14117 18 September 2002. Summary of changes for this release.
14120 1) ACPI CA Core Subsystem version 20020918:
14122 Fixed a reported problem with reference chaining (via the Index()
14123 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14124 The definition of these operators includes the dereferencing of
14125 all chained references to return information on the base object.
14127 Fixed a problem with stores to indexed package elements - the
14128 existing code would not complete the store if an "implicit
14129 conversion" was not performed. In other words, if the existing
14130 object (package element) was to be replaced completely, the code
14131 didn't handle this case.
14133 Relaxed typechecking on the ASL "Scope" operator to allow the
14134 target name to refer to an object of type Integer, String, or
14135 Buffer, in addition to the scoping object types (Device,
14136 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14137 This allows existing AML code that has workarounds for a bug in
14138 Windows to function properly. A warning is issued, however. This
14139 affects both the AML interpreter and the iASL compiler. Below is
14140 an example of this type of ASL code:
14146 Fixed some reported problems with 64-bit integer support in the
14147 local implementation of C library functions (clib.c)
14152 Use ACPI fix map region instead of IOAPIC region, since it is
14153 undefined in non-SMP.
14155 Ensure that the SCI has the proper polarity and trigger, even on
14156 systems that do not have an interrupt override entry in the MADT.
14158 2.5 big driver reorganization (Pat Mochel)
14160 Use early table mapping code from acpitable.c (Andi Kleen)
14162 New blacklist entries (Andi Kleen)
14164 Blacklist improvements. Split blacklist code out into a separate
14165 file. Move checking the blacklist to very early. Previously, we
14166 would use ACPI tables, and then halfway through init, check the
14167 blacklist -- too late. Now, it's early enough to completely fall-
14171 3) iASL Compiler/Disassembler version 20020918:
14173 Fixed a problem where the typechecking code didn't know that an
14174 alias could point to a method. In other words, aliases were not
14175 being dereferenced during typechecking.
14178 ----------------------------------------
14179 29 August 2002. Summary of changes for this release.
14181 1) ACPI CA Core Subsystem Version 20020829:
14183 If the target of a Scope() operator already exists, it must be an
14184 object type that actually opens a scope -- such as a Device,
14185 Method, Scope, etc. This is a fatal runtime error. Similar error
14186 check has been added to the iASL compiler also.
14188 Tightened up the namespace load to disallow multiple names in the
14189 same scope. This previously was allowed if both objects were of
14190 the same type. (i.e., a lookup was the same as entering a new
14196 Ensure that the ACPI interrupt has the proper trigger and
14199 local_irq_disable is extraneous. (Matthew Wilcox)
14201 Make "acpi=off" actually do what it says, and not use the ACPI
14202 interpreter *or* the tables.
14204 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
14208 3) iASL Compiler/Disassembler Version 20020829:
14210 Implemented namepath optimization for name declarations. For
14211 example, a declaration like "Method (\_SB_.ABCD)" would get
14212 optimized to "Method (ABCD)" if the declaration is within the
14213 \_SB_ scope. This optimization is in addition to the named
14214 reference path optimization first released in the previous
14215 version. This would seem to complete all possible optimizations
14216 for namepaths within the ASL/AML.
14218 If the target of a Scope() operator already exists, it must be an
14219 object type that actually opens a scope -- such as a Device,
14220 Method, Scope, etc.
14222 Implemented a check and warning for unreachable code in the same
14223 block below a Return() statement.
14225 Fixed a problem where the listing file was not generated if the
14226 compiler aborted if the maximum error count was exceeded (200).
14228 Fixed a problem where the typechecking of method return values was
14229 broken. This includes the check for a return value when the
14230 method is invoked as a TermArg (a return value is expected.)
14232 Fixed a reported problem where EOF conditions during a quoted
14233 string or comment caused a fault.
14236 ----------------------------------------
14237 15 August 2002. Summary of changes for this release.
14239 1) ACPI CA Core Subsystem Version 20020815:
14241 Fixed a reported problem where a Store to a method argument that
14242 contains a reference did not perform the indirect store correctly.
14243 This problem was created during the conversion to the new
14244 reference object model - the indirect store to a method argument
14245 code was not updated to reflect the new model.
14247 Reworked the ACPI mode change code to better conform to ACPI 2.0,
14248 handle corner cases, and improve code legibility (Kochi Takayoshi)
14250 Fixed a problem with the pathname parsing for the carat (^)
14251 prefix. The heavy use of the carat operator by the new namepath
14252 optimization in the iASL compiler uncovered a problem with the AML
14253 interpreter handling of this prefix. In the case where one or
14254 more carats precede a single nameseg, the nameseg was treated as
14255 standalone and the search rule (to root) was inadvertently
14256 applied. This could cause both the iASL compiler and the
14257 interpreter to find the wrong object or to miss the error that
14258 should occur if the object does not exist at that exact pathname.
14260 Found and fixed the problem where the HP Pavilion DSDT would not
14261 load. This was a relatively minor tweak to the table loading code
14262 (a problem caused by the unexpected encounter with a method
14263 invocation not within a control method), but it does not solve the
14264 overall issue of the execution of AML code at the table level.
14265 This investigation is still ongoing.
14267 Code and Data Size: Current core subsystem library sizes are shown
14268 below. These are the code and data sizes for the acpica.lib
14269 produced by the Microsoft Visual C++ 6.0 compiler, and these
14270 values do not include any ACPI driver or OSPM code. The debug
14271 version of the code includes the debug output trace mechanism and
14272 has a larger code and data size. Note that these values will vary
14273 depending on the efficiency of the compiler and the compiler
14274 options used during generation.
14277 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14278 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14280 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14281 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14286 Remove redundant slab.h include (Brad Hards)
14288 Fix several bugs in thermal.c (Herbert Nachtnebel)
14290 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
14292 Change acpi_system_suspend to use updated irq functions (Pavel
14295 Export acpi_get_firmware_table (Matthew Wilcox)
14297 Use proper root proc entry for ACPI (Kochi Takayoshi)
14299 Fix early-boot table parsing (Bjorn Helgaas)
14302 3) iASL Compiler/Disassembler
14304 Reworked the compiler options to make them more consistent and to
14305 use two-letter options where appropriate. We were running out of
14306 sensible letters. This may break some makefiles, so check the
14307 current options list by invoking the compiler with no parameters.
14309 Completed the design and implementation of the ASL namepath
14310 optimization option for the compiler. This option optimizes all
14311 references to named objects to the shortest possible path. The
14312 first attempt tries to utilize a single nameseg (4 characters) and
14313 the "search-to-root" algorithm used by the interpreter. If that
14314 cannot be used (because either the name is not in the search path
14315 or there is a conflict with another object with the same name),
14316 the pathname is optimized using the carat prefix (usually a
14317 shorter string than specifying the entire path from the root.)
14319 Implemented support to obtain the DSDT from the Windows registry
14320 (when the disassembly option is specified with no input file).
14321 Added this code as the implementation for AcpiOsTableOverride in
14322 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
14323 utility) to scan memory for the DSDT to the AcpiOsTableOverride
14324 function in the DOS OSL to make the disassembler truly OS
14327 Implemented a new option to disassemble and compile in one step.
14328 When used without an input filename, this option will grab the
14329 DSDT from the local machine, disassemble it, and compile it in one
14332 Added a warning message for invalid escapes (a backslash followed
14333 by any character other than the allowable escapes). This catches
14334 the quoted string error "\_SB_" (which should be "\\_SB_" ).
14336 Also, there are numerous instances in the ACPI specification where
14339 Added a compiler option to disable all optimizations. This is
14340 basically the "compatibility mode" because by using this option,
14341 the AML code will come out exactly the same as other ASL
14344 Added error messages for incorrectly ordered dependent resource
14345 functions. This includes: missing EndDependentFn macro at end of
14346 dependent resource list, nested dependent function macros (both
14347 start and end), and missing StartDependentFn macro. These are
14348 common errors that should be caught at compile time.
14350 Implemented _OSI support for the disassembler and compiler. _OSI
14351 must be included in the namespace for proper disassembly (because
14352 the disassembler must know the number of arguments.)
14354 Added an "optimization" message type that is optional (off by
14355 default). This message is used for all optimizations - including
14356 constant folding, integer optimization, and namepath optimization.
14358 ----------------------------------------
14359 25 July 2002. Summary of changes for this release.
14362 1) ACPI CA Core Subsystem Version 20020725:
14364 The AML Disassembler has been enhanced to produce compilable ASL
14365 code and has been integrated into the iASL compiler (see below) as
14366 well as the single-step disassembly for the AML debugger and the
14367 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
14368 resource templates and macros are fully supported. The
14369 disassembler has been tested on over 30 different AML files,
14370 producing identical AML when the resulting disassembled ASL file
14371 is recompiled with the same ASL compiler.
14373 Modified the Resource Manager to allow zero interrupts and zero
14374 dma channels during the GetCurrentResources call. This was
14375 causing problems on some platforms.
14377 Added the AcpiOsRedirectOutput interface to the OSL to simplify
14378 output redirection for the AcpiOsPrintf and AcpiOsVprintf
14381 Code and Data Size: Current core subsystem library sizes are shown
14382 below. These are the code and data sizes for the acpica.lib
14383 produced by the Microsoft Visual C++ 6.0 compiler, and these
14384 values do not include any ACPI driver or OSPM code. The debug
14385 version of the code includes the debug output trace mechanism and
14386 has a larger code and data size. Note that these values will vary
14387 depending on the efficiency of the compiler and the compiler
14388 options used during generation.
14391 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14392 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14394 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14395 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14400 Fixed a panic in the EC driver (Dominik Brodowski)
14402 Implemented checksum of the R/XSDT itself during Linux table scan
14408 The AML disassembler is integrated into the compiler. The "-d"
14409 option invokes the disassembler to completely disassemble an
14410 input AML file, producing as output a text ASL file with the
14411 extension ".dsl" (to avoid name collisions with existing .asl
14412 source files.) A future enhancement will allow the disassembler
14413 to obtain the BIOS DSDT from the registry under Windows.
14415 Fixed a problem with the VendorShort and VendorLong resource
14416 descriptors where an invalid AML sequence was created.
14418 Implemented a fix for BufferData term in the ASL parser. It was
14419 inadvertently defined twice, allowing invalid syntax to pass and
14420 causing reduction conflicts.
14422 Fixed a problem where the Ones opcode could get converted to a
14423 value of zero if "Ones" was used where a byte, word or dword value
14424 was expected. The 64-bit value is now truncated to the correct
14425 size with the correct value.
14429 ----------------------------------------
14430 02 July 2002. Summary of changes for this release.
14433 1) ACPI CA Core Subsystem Version 20020702:
14435 The Table Manager code has been restructured to add several new
14436 features. Tables that are not required by the core subsystem
14437 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
14438 validated in any way and are returned from AcpiGetFirmwareTable if
14439 requested. The AcpiOsTableOverride interface is now called for
14440 each table that is loaded by the subsystem in order to allow the
14441 host to override any table it chooses. Previously, only the DSDT
14442 could be overridden. Added one new files, tbrsdt.c and
14445 Fixed a problem with the conversion of internal package objects to
14446 external objects (when a package is returned from a control
14447 method.) The return buffer length was set to zero instead of the
14448 proper length of the package object.
14450 Fixed a reported problem with the use of the RefOf and DeRefOf
14451 operators when passing reference arguments to control methods. A
14452 new type of Reference object is used internally for references
14453 produced by the RefOf operator.
14455 Added additional error messages in the Resource Manager to explain
14456 AE_BAD_DATA errors when they occur during resource parsing.
14458 Split the AcpiEnableSubsystem into two primitives to enable a
14459 finer granularity initialization sequence. These two calls should
14460 be called in this order: AcpiEnableSubsystem (flags),
14461 AcpiInitializeObjects (flags). The flags parameter remains the
14467 Updated the ACPI utilities module to understand the new style of
14468 fully resolved package objects that are now returned from the core
14469 subsystem. This eliminates errors of the form:
14471 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
14472 acpi_utils-0430 [145] acpi_evaluate_reference:
14473 Invalid element in package (not a device reference)
14475 The method evaluation utility uses the new buffer allocation
14476 scheme instead of calling AcpiEvaluate Object twice.
14478 Added support for ECDT. This allows the use of the Embedded
14480 Controller before the namespace has been fully initialized, which
14481 is necessary for ACPI 2.0 support, and for some laptops to
14482 initialize properly. (Laptops using ECDT are still rare, so only
14483 limited testing was performed of the added functionality.)
14485 Fixed memory leaks in the EC driver.
14487 Eliminated a brittle code structure in acpi_bus_init().
14489 Eliminated the acpi_evaluate() helper function in utils.c. It is
14490 no longer needed since acpi_evaluate_object can optionally
14491 allocate memory for the return object.
14493 Implemented fix for keyboard hang when getting battery readings on
14494 some systems (Stephen White)
14496 PCI IRQ routing update (Dominik Brodowski)
14498 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
14501 ----------------------------------------
14502 11 June 2002. Summary of changes for this release.
14505 1) ACPI CA Core Subsystem Version 20020611:
14507 Fixed a reported problem where constants such as Zero and One
14508 appearing within _PRT packages were not handled correctly within
14509 the resource manager code. Originally reported against the ASL
14510 compiler because the code generator now optimizes integers to
14511 their minimal AML representation (i.e. AML constants if possible.)
14512 The _PRT code now handles all AML constant opcodes correctly
14513 (Zero, One, Ones, Revision).
14515 Fixed a problem with the Concatenate operator in the AML
14516 interpreter where a buffer result object was incorrectly marked as
14517 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
14519 All package sub-objects are now fully resolved before they are
14520 returned from the external ACPI interfaces. This means that name
14521 strings are resolved to object handles, and constant operators
14522 (Zero, One, Ones, Revision) are resolved to Integers.
14524 Implemented immediate resolution of the AML Constant opcodes
14525 (Zero, One, Ones, Revision) to Integer objects upon detection
14526 within the AML stream. This has simplified and reduced the
14527 generated code size of the subsystem by eliminating about 10
14528 switch statements for these constants (which previously were
14529 contained in Reference objects.) The complicating issues are that
14530 the Zero opcode is used as a "placeholder" for unspecified
14531 optional target operands and stores to constants are defined to be
14534 Code and Data Size: Current core subsystem library sizes are shown
14535 below. These are the code and data sizes for the acpica.lib
14536 produced by the Microsoft Visual C++ 6.0 compiler, and these
14537 values do not include any ACPI driver or OSPM code. The debug
14538 version of the code includes the debug output trace mechanism and
14539 has a larger code and data size. Note that these values will vary
14540 depending on the efficiency of the compiler and the compiler
14541 options used during generation.
14544 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14545 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14547 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14548 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14554 Added preliminary support for obtaining _TRA data for PCI root
14555 bridges (Bjorn Helgaas).
14558 3) iASL Compiler Version X2046:
14560 Fixed a problem where the "_DDN" reserved name was defined to be a
14561 control method with one argument. There are no arguments, and
14562 _DDN does not have to be a control method.
14564 Fixed a problem with the Linux version of the compiler where the
14565 source lines printed with error messages were the wrong lines.
14566 This turned out to be the "LF versus CR/LF" difference between
14567 Windows and Unix. This appears to be the longstanding issue
14568 concerning listing output and error messages.
14570 Fixed a problem with the Linux version of compiler where opcode
14571 names within error messages were wrong. This was caused by a
14572 slight difference in the output of the Flex tool on Linux versus
14575 Fixed a problem with the Linux compiler where the hex output files
14576 contained some garbage data caused by an internal buffer overrun.
14579 ----------------------------------------
14580 17 May 2002. Summary of changes for this release.
14583 1) ACPI CA Core Subsystem Version 20020517:
14585 Implemented a workaround to an BIOS bug discovered on the HP
14586 OmniBook where the FADT revision number and the table size are
14587 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
14588 behavior is to fallback to using only the ACPI 1.0 fields of the
14589 FADT if the table is too small to be a ACPI 2.0 table as claimed
14590 by the revision number. Although this is a BIOS bug, this is a
14591 case where the workaround is simple enough and with no side
14592 effects, so it seemed prudent to add it. A warning message is
14595 Implemented minimum size checks for the fixed-length ACPI tables -
14596 - the FADT and FACS, as well as consistency checks between the
14597 revision number and the table size.
14599 Fixed a reported problem in the table override support where the
14600 new table pointer was incorrectly treated as a physical address
14601 instead of a logical address.
14603 Eliminated the use of the AE_AML_ERROR exception and replaced it
14604 with more descriptive codes.
14606 Fixed a problem where an exception would occur if an ASL Field was
14607 defined with no named Field Units underneath it (used by some
14610 Code and Data Size: Current core subsystem library sizes are shown
14611 below. These are the code and data sizes for the acpica.lib
14612 produced by the Microsoft Visual C++ 6.0 compiler, and these
14613 values do not include any ACPI driver or OSPM code. The debug
14614 version of the code includes the debug output trace mechanism and
14615 has a larger code and data size. Note that these values will vary
14616 depending on the efficiency of the compiler and the compiler
14617 options used during generation.
14620 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14621 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14623 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14624 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14630 Much work done on ACPI init (MADT and PCI IRQ routing support).
14631 (Paul D. and Dominik Brodowski)
14633 Fix PCI IRQ-related panic on boot (Sam Revitch)
14635 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
14637 Fix "MHz" typo (Dominik Brodowski)
14639 Fix RTC year 2000 issue (Dominik Brodowski)
14641 Preclude multiple button proc entries (Eric Brunet)
14643 Moved arch-specific code out of include/platform/aclinux.h
14645 3) iASL Compiler Version X2044:
14647 Implemented error checking for the string used in the EISAID macro
14648 (Usually used in the definition of the _HID object.) The code now
14649 strictly enforces the PnP format - exactly 7 characters, 3
14650 uppercase letters and 4 hex digits.
14652 If a raw string is used in the definition of the _HID object
14653 (instead of the EISAID macro), the string must contain all
14654 alphanumeric characters (e.g., "*PNP0011" is not allowed because
14657 Implemented checking for invalid use of ACPI reserved names for
14658 most of the name creation operators (Name, Device, Event, Mutex,
14659 OperationRegion, PowerResource, Processor, and ThermalZone.)
14660 Previously, this check was only performed for control methods.
14662 Implemented an additional check on the Name operator to emit an
14663 error if a reserved name that must be implemented in ASL as a
14664 control method is used. We know that a reserved name must be a
14665 method if it is defined with input arguments.
14667 The warning emitted when a namespace object reference is not found
14668 during the cross reference phase has been changed into an error.
14669 The "External" directive should be used for names defined in other
14673 4) Tools and Utilities
14675 The 16-bit tools (adump16 and aexec16) have been regenerated and
14678 Fixed a problem with the output of both acpidump and adump16 where
14679 the indentation of closing parentheses and brackets was not
14681 aligned properly with the parent block.
14684 ----------------------------------------
14685 03 May 2002. Summary of changes for this release.
14688 1) ACPI CA Core Subsystem Version 20020503:
14690 Added support a new OSL interface that allows the host operating
14692 system software to override the DSDT found in the firmware -
14693 AcpiOsTableOverride. With this interface, the OSL can examine the
14694 version of the firmware DSDT and replace it with a different one
14697 Added new external interfaces for accessing ACPI registers from
14698 device drivers and other system software - AcpiGetRegister and
14699 AcpiSetRegister. This was simply an externalization of the
14700 existing AcpiHwBitRegister interfaces.
14702 Fixed a regression introduced in the previous build where the
14703 ASL/AML CreateField operator always returned an error,
14704 "destination must be a NS Node".
14706 Extended the maximum time (before failure) to successfully enable
14707 ACPI mode to 3 seconds.
14709 Code and Data Size: Current core subsystem library sizes are shown
14710 below. These are the code and data sizes for the acpica.lib
14711 produced by the Microsoft Visual C++ 6.0 compiler, and these
14712 values do not include any ACPI driver or OSPM code. The debug
14713 version of the code includes the debug output trace mechanism and
14714 has a larger code and data size. Note that these values will vary
14715 depending on the efficiency of the compiler and the compiler
14716 options used during generation.
14719 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14720 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14722 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14723 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14728 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
14729 free. While 3 out of 4 of our in-house systems work fine, the last
14730 one still hangs when testing the LAPIC timer.
14732 Renamed many files in 2.5 kernel release to omit "acpi_" from the
14735 Added warning on boot for Presario 711FR.
14737 Sleep improvements (Pavel Machek)
14739 ACPI can now be built without CONFIG_PCI enabled.
14741 IA64: Fixed memory map functions (JI Lee)
14744 3) iASL Compiler Version X2043:
14746 Added support to allow the compiler to be integrated into the MS
14747 VC++ development environment for one-button compilation of single
14748 files or entire projects -- with error-to-source-line mapping.
14750 Implemented support for compile-time constant folding for the
14751 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
14752 specification. This allows the ASL writer to use expressions
14753 instead of Integer/Buffer/String constants in terms that must
14754 evaluate to constants at compile time and will also simplify the
14755 emitted AML in any such sub-expressions that can be folded
14756 (evaluated at compile-time.) This increases the size of the
14757 compiler significantly because a portion of the ACPI CA AML
14758 interpreter is included within the compiler in order to pre-
14759 evaluate constant expressions.
14762 Fixed a problem with the "Unicode" ASL macro that caused the
14763 compiler to fault. (This macro is used in conjunction with the
14764 _STR reserved name.)
14766 Implemented an AML opcode optimization to use the Zero, One, and
14767 Ones opcodes where possible to further reduce the size of integer
14768 constants and thus reduce the overall size of the generated AML
14771 Implemented error checking for new reserved terms for ACPI version
14774 Implemented the -qr option to display the current list of ACPI
14775 reserved names known to the compiler.
14777 Implemented the -qc option to display the current list of ASL
14778 operators that are allowed within constant expressions and can
14779 therefore be folded at compile time if the operands are constants.
14784 Updated the Programmer's Reference for new interfaces, data types,
14785 and memory allocation model options.
14787 Updated the iASL Compiler User Reference to apply new format and
14788 add information about new features and options.
14790 ----------------------------------------
14791 19 April 2002. Summary of changes for this release.
14793 1) ACPI CA Core Subsystem Version 20020419:
14795 The source code base for the Core Subsystem has been completely
14796 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
14797 versions. The Lint option files used are included in the
14798 /acpi/generate/lint directory.
14800 Implemented enhanced status/error checking across the entire
14801 Hardware manager subsystem. Any hardware errors (reported from
14802 the OSL) are now bubbled up and will abort a running control
14806 Fixed a problem where the per-ACPI-table integer width (32 or 64)
14807 was stored only with control method nodes, causing a fault when
14808 non-control method code was executed during table loading. The
14809 solution implemented uses a global variable to indicate table
14810 width across the entire ACPI subsystem. Therefore, ACPI CA does
14811 not support mixed integer widths across different ACPI tables
14814 Fixed a problem where NULL extended fields (X fields) in an ACPI
14815 2.0 ACPI FADT caused the table load to fail. Although the
14816 existing ACPI specification is a bit fuzzy on this topic, the new
14817 behavior is to fall back on a ACPI 1.0 field if the corresponding
14818 ACPI 2.0 X field is zero (even though the table revision indicates
14819 a full ACPI 2.0 table.) The ACPI specification will be updated to
14820 clarify this issue.
14822 Fixed a problem with the SystemMemory operation region handler
14823 where memory was always accessed byte-wise even if the AML-
14824 specified access width was larger than a byte. This caused
14825 problems on systems with memory-mapped I/O. Memory is now
14826 accessed with the width specified. On systems that do not support
14827 non-aligned transfers, a check is made to guarantee proper address
14828 alignment before proceeding in order to avoid an AML-caused
14829 alignment fault within the kernel.
14832 Fixed a problem with the ExtendedIrq resource where only one byte
14833 of the 4-byte Irq field was extracted.
14835 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
14836 function was out of date and required a rewrite.
14838 Code and Data Size: Current core subsystem library sizes are shown
14839 below. These are the code and data sizes for the acpica.lib
14840 produced by the Microsoft Visual C++ 6.0 compiler, and these
14841 values do not include any ACPI driver or OSPM code. The debug
14842 version of the code includes the debug output trace mechanism and
14843 has a larger code and data size. Note that these values will vary
14844 depending on the efficiency of the compiler and the compiler
14845 options used during generation.
14848 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14849 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14851 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14852 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14857 PCI IRQ routing fixes (Dominik Brodowski)
14860 3) iASL Compiler Version X2042:
14862 Implemented an additional compile-time error check for a field
14863 unit whose size + minimum access width would cause a run-time
14864 access beyond the end-of-region. Previously, only the field size
14865 itself was checked.
14867 The Core subsystem and iASL compiler now share a common parse
14868 object in preparation for compile-time evaluation of the type
14869 3/4/5 ASL operators.
14872 ----------------------------------------
14873 Summary of changes for this release: 03_29_02
14875 1) ACPI CA Core Subsystem Version 20020329:
14877 Implemented support for late evaluation of TermArg operands to
14878 Buffer and Package objects. This allows complex expressions to be
14879 used in the declarations of these object types.
14881 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
14882 1.0, if the field was larger than 32 bits, it was returned as a
14883 buffer - otherwise it was returned as an integer. In ACPI 2.0,
14884 the field is returned as a buffer only if the field is larger than
14885 64 bits. The TableRevision is now considered when making this
14886 conversion to avoid incompatibility with existing ASL code.
14888 Implemented logical addressing for AcpiOsGetRootPointer. This
14889 allows an RSDP with either a logical or physical address. With
14890 this support, the host OS can now override all ACPI tables with
14891 one logical RSDP. Includes implementation of "typed" pointer
14892 support to allow a common data type for both physical and logical
14893 pointers internally. This required a change to the
14894 AcpiOsGetRootPointer interface.
14896 Implemented the use of ACPI 2.0 Generic Address Structures for all
14897 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
14898 mapped I/O for these ACPI features.
14900 Initialization now ignores not only non-required tables (All
14901 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
14902 not validate the table headers of unrecognized tables.
14904 Fixed a problem where a notify handler could only be
14905 installed/removed on an object of type Device. All "notify"
14907 objects are now supported -- Devices, Processor, Power, and
14910 Removed most verbosity from the ACPI_DB_INFO debug level. Only
14911 critical information is returned when this debug level is enabled.
14913 Code and Data Size: Current core subsystem library sizes are shown
14914 below. These are the code and data sizes for the acpica.lib
14915 produced by the Microsoft Visual C++ 6.0 compiler, and these
14916 values do not include any ACPI driver or OSPM code. The debug
14917 version of the code includes the debug output trace mechanism and
14918 has a larger code and data size. Note that these values will vary
14919 depending on the efficiency of the compiler and the compiler
14920 options used during generation.
14923 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14924 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14926 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14927 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14932 The processor driver (acpi_processor.c) now fully supports ACPI
14933 2.0-based processor performance control (e.g. Intel(R)
14934 SpeedStep(TM) technology) Note that older laptops that only have
14935 the Intel "applet" interface are not supported through this. The
14936 'limit' and 'performance' interface (/proc) are fully functional.
14937 [Note that basic policy for controlling performance state
14938 transitions will be included in the next version of ospmd.] The
14939 idle handler was modified to more aggressively use C2, and PIIX4
14940 errata handling underwent a complete overhaul (big thanks to
14941 Dominik Brodowski).
14943 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
14944 based devices in the ACPI namespace are now dynamically bound
14945 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
14946 This allows, among other things, ACPI to resolve bus numbers for
14947 subordinate PCI bridges.
14949 Enhanced PCI IRQ routing to get the proper bus number for _PRT
14950 entries defined underneath PCI bridges.
14952 Added IBM 600E to bad bios list due to invalid _ADR value for
14953 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
14955 In the process of adding full MADT support (e.g. IOAPIC) for IA32
14956 (acpi.c, mpparse.c) -- stay tuned.
14958 Added back visual differentiation between fixed-feature and
14959 control-method buttons in dmesg. Buttons are also subtyped (e.g.
14960 button/power/PWRF) to simplify button identification.
14962 We no longer use -Wno-unused when compiling debug. Please ignore
14963 any "_THIS_MODULE defined but not used" messages.
14965 Can now shut down the system using "magic sysrq" key.
14968 3) iASL Compiler version 2041:
14970 Fixed a problem where conversion errors for hex/octal/decimal
14971 constants were not reported.
14973 Implemented a fix for the General Register template Address field.
14974 This field was 8 bits when it should be 64.
14976 Fixed a problem where errors/warnings were no longer being emitted
14977 within the listing output file.
14979 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
14980 exactly 4 characters, alphanumeric only.
14985 ----------------------------------------
14986 Summary of changes for this release: 03_08_02
14989 1) ACPI CA Core Subsystem Version 20020308:
14991 Fixed a problem with AML Fields where the use of the "AccessAny"
14992 keyword could cause an interpreter error due to attempting to read
14993 or write beyond the end of the parent Operation Region.
14995 Fixed a problem in the SystemMemory Operation Region handler where
14996 an attempt was made to map memory beyond the end of the region.
14997 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
14998 errors on some Linux systems.
15000 Fixed a problem where the interpreter/namespace "search to root"
15001 algorithm was not functioning for some object types. Relaxed the
15002 internal restriction on the search to allow upsearches for all
15003 external object types as well as most internal types.
15008 We now use safe_halt() macro versus individual calls to sti | hlt.
15010 Writing to the processor limit interface should now work. "echo 1"
15011 will increase the limit, 2 will decrease, and 0 will reset to the
15018 Fixed segfault on Linux version.
15021 ----------------------------------------
15022 Summary of changes for this release: 02_25_02
15024 1) ACPI CA Core Subsystem:
15027 Fixed a problem where the GPE bit masks were not initialized
15028 properly, causing erratic GPE behavior.
15030 Implemented limited support for multiple calling conventions. The
15031 code can be generated with either the VPL (variable parameter
15032 list, or "C") convention, or the FPL (fixed parameter list, or
15033 "Pascal") convention. The core subsystem is about 3.4% smaller
15034 when generated with FPL.
15039 Re-add some /proc/acpi/event functionality that was lost during
15042 Resolved issue with /proc events for fixed-feature buttons showing
15043 up as the system device.
15045 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15047 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15049 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15051 Fixed limit interface & usage to fix bugs with passive cooling
15054 Restructured PRT support.
15057 ----------------------------------------
15058 Summary of changes for this label: 02_14_02
15061 1) ACPI CA Core Subsystem:
15063 Implemented support in AcpiLoadTable to allow loading of FACS and
15066 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15067 been removed. All 64-bit platforms should be migrated to the ACPI
15068 2.0 tables. The actbl71.h header has been removed from the source
15071 All C macros defined within the subsystem have been prefixed with
15072 "ACPI_" to avoid collision with other system include files.
15074 Removed the return value for the two AcpiOsPrint interfaces, since
15075 it is never used and causes lint warnings for ignoring the return
15078 Added error checking to all internal mutex acquire and release
15079 calls. Although a failure from one of these interfaces is
15080 probably a fatal system error, these checks will cause the
15081 immediate abort of the currently executing method or interface.
15083 Fixed a problem where the AcpiSetCurrentResources interface could
15084 fault. This was a side effect of the deployment of the new memory
15087 Fixed a couple of problems with the Global Lock support introduced
15088 in the last major build. The "common" (1.0/2.0) internal FACS was
15089 being overwritten with the FACS signature and clobbering the
15090 Global Lock pointer. Also, the actual firmware FACS was being
15091 unmapped after construction of the "common" FACS, preventing
15092 access to the actual Global Lock field within it. The "common"
15093 internal FACS is no longer installed as an actual ACPI table; it
15094 is used simply as a global.
15096 Code and Data Size: Current core subsystem library sizes are shown
15097 below. These are the code and data sizes for the acpica.lib
15098 produced by the Microsoft Visual C++ 6.0 compiler, and these
15099 values do not include any ACPI driver or OSPM code. The debug
15100 version of the code includes the debug output trace mechanism and
15101 has a larger code and data size. Note that these values will vary
15102 depending on the efficiency of the compiler and the compiler
15103 options used during generation.
15105 Previous Release (02_07_01)
15106 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15107 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15109 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15110 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15115 Updated Linux-specific code for core macro and OSL interface
15116 changes described above.
15118 Improved /proc/acpi/event. It now can be opened only once and has
15119 proper poll functionality.
15121 Fixed and restructured power management (acpi_bus).
15123 Only create /proc "view by type" when devices of that class exist.
15125 Fixed "charging/discharging" bug (and others) in acpi_battery.
15127 Improved thermal zone code.
15130 3) ASL Compiler, version X2039:
15133 Implemented the new compiler restriction on ASL String hex/octal
15134 escapes to non-null, ASCII values. An error results if an invalid
15135 value is used. (This will require an ACPI 2.0 specification
15138 AML object labels that are output to the optional C and ASM source
15139 are now prefixed with both the ACPI table signature and table ID
15140 to help guarantee uniqueness within a large BIOS project.
15143 ----------------------------------------
15144 Summary of changes for this label: 02_01_02
15146 1) ACPI CA Core Subsystem:
15148 ACPI 2.0 support is complete in the entire Core Subsystem and the
15149 ASL compiler. All new ACPI 2.0 operators are implemented and all
15150 other changes for ACPI 2.0 support are complete. With
15151 simultaneous code and data optimizations throughout the subsystem,
15152 ACPI 2.0 support has been implemented with almost no additional
15153 cost in terms of code and data size.
15155 Implemented a new mechanism for allocation of return buffers. If
15156 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
15157 be allocated on behalf of the caller. Consolidated all return
15158 buffer validation and allocation to a common procedure. Return
15159 buffers will be allocated via the primary OSL allocation interface
15160 since it appears that a separate pool is not needed by most users.
15161 If a separate pool is required for these buffers, the caller can
15162 still use the original mechanism and pre-allocate the buffer(s).
15164 Implemented support for string operands within the DerefOf
15167 Restructured the Hardware and Event managers to be table driven,
15168 simplifying the source code and reducing the amount of generated
15171 Split the common read/write low-level ACPI register bitfield
15172 procedure into a separate read and write, simplifying the code
15175 Obsoleted the AcpiOsCallocate OSL interface. This interface was
15176 used only a handful of times and didn't have enough critical mass
15177 for a separate interface. Replaced with a common calloc procedure
15180 Fixed a reported problem with the GPE number mapping mechanism
15181 that allows GPE1 numbers to be non-contiguous with GPE0.
15182 Reorganized the GPE information and shrunk a large array that was
15183 originally large enough to hold info for all possible GPEs (256)
15184 to simply large enough to hold all GPEs up to the largest GPE
15185 number on the machine.
15187 Fixed a reported problem with resource structure alignment on 64-
15190 Changed the AcpiEnableEvent and AcpiDisableEvent external
15191 interfaces to not require any flags for the common case of
15192 enabling/disabling a GPE.
15194 Implemented support to allow a "Notify" on a Processor object.
15196 Most TBDs in comments within the source code have been resolved
15200 Fixed a problem in the interpreter where a standalone parent
15201 prefix (^) was not handled correctly in the interpreter and
15204 Removed obsolete and unnecessary GPE save/restore code.
15206 Implemented Field support in the ASL Load operator. This allows a
15207 table to be loaded from a named field, in addition to loading a
15208 table directly from an Operation Region.
15210 Implemented timeout and handle support in the external Global Lock
15213 Fixed a problem in the AcpiDump utility where pathnames were no
15214 longer being generated correctly during the dump of named objects.
15216 Modified the AML debugger to give a full display of if/while
15217 predicates instead of just one AML opcode at a time. (The
15218 predicate can have several nested ASL statements.) The old method
15219 was confusing during single stepping.
15221 Code and Data Size: Current core subsystem library sizes are shown
15222 below. These are the code and data sizes for the acpica.lib
15223 produced by the Microsoft Visual C++ 6.0 compiler, and these
15224 values do not include any ACPI driver or OSPM code. The debug
15225 version of the code includes the debug output trace mechanism and
15226 has a larger code and data size. Note that these values will vary
15227 depending on the efficiency of the compiler and the compiler
15228 options used during generation.
15230 Previous Release (12_18_01)
15231 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15232 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15234 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15235 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15239 Implemented fix for PIIX reverse throttling errata (Processor
15242 Added new Limit interface (Processor and Thermal drivers)
15244 New thermal policy (Thermal driver)
15246 Many updates to /proc
15248 Battery "low" event support (Battery driver)
15250 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
15252 IA32 - IA64 initialization unification, no longer experimental
15254 Menuconfig options redesigned
15256 3) ASL Compiler, version X2037:
15258 Implemented several new output features to simplify integration of
15259 AML code into firmware: 1) Output the AML in C source code with
15260 labels for each named ASL object. The original ASL source code
15261 is interleaved as C comments. 2) Output the AML in ASM source code
15262 with labels and interleaved ASL source. 3) Output the AML in
15263 raw hex table form, in either C or ASM.
15265 Implemented support for optional string parameters to the
15266 LoadTable operator.
15268 Completed support for embedded escape sequences within string
15269 literals. The compiler now supports all single character escapes
15270 as well as the Octal and Hex escapes. Note: the insertion of a
15271 null byte into a string literal (via the hex/octal escape) causes
15272 the string to be immediately terminated. A warning is issued.
15274 Fixed a problem where incorrect AML was generated for the case
15275 where an ASL namepath consists of a single parent prefix (
15277 ) with no trailing name segments.
15279 The compiler has been successfully generated with a 64-bit C
15285 ----------------------------------------
15286 Summary of changes for this label: 12_18_01
15290 Enhanced blacklist with reason and severity fields. Any table's
15291 signature may now be used to identify a blacklisted system.
15293 Call _PIC control method to inform the firmware which interrupt
15294 model the OS is using. Turn on any disabled link devices.
15296 Cleaned up busmgr /proc error handling (Andreas Dilger)
15298 2) ACPI CA Core Subsystem:
15300 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
15303 Completed implementation of the ACPI 2.0 "Continue",
15304 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
15305 operators. All new ACPI 2.0 operators are now implemented in both
15306 the ASL compiler and the AML interpreter. The only remaining ACPI
15307 2.0 task is support for the String data type in the DerefOf
15308 operator. Fixed a problem with AcquireMutex where the status code
15309 was lost if the caller had to actually wait for the mutex.
15311 Increased the maximum ASL Field size from 64K bits to 4G bits.
15313 Completed implementation of the external Global Lock interfaces --
15314 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
15315 Handler parameters were added.
15317 Completed another pass at removing warnings and issues when
15318 compiling with 64-bit compilers. The code now compiles cleanly
15319 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
15320 add and subtract (diff) macros have changed considerably.
15323 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
15324 64-bit platforms, 32-bits on all others. This type is used
15325 wherever memory allocation and/or the C sizeof() operator is used,
15326 and affects the OSL memory allocation interfaces AcpiOsAllocate
15327 and AcpiOsCallocate.
15329 Implemented sticky user breakpoints in the AML debugger.
15331 Code and Data Size: Current core subsystem library sizes are shown
15332 below. These are the code and data sizes for the acpica.lib
15333 produced by the Microsoft Visual C++ 6.0 compiler, and these
15334 values do not include any ACPI driver or OSPM code. The debug
15335 version of the code includes the debug output trace mechanism and
15336 has a larger code and data size. Note that these values will vary
15337 depending on the efficiency of the compiler and the compiler
15338 options used during generation.
15340 Previous Release (12_05_01)
15341 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15342 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15344 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15345 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15347 3) ASL Compiler, version X2034:
15349 Now checks for (and generates an error if detected) the use of a
15350 Break or Continue statement without an enclosing While statement.
15353 Successfully generated the compiler with the Intel 64-bit C
15356 ----------------------------------------
15357 Summary of changes for this label: 12_05_01
15359 1) ACPI CA Core Subsystem:
15361 The ACPI 2.0 CopyObject operator is fully implemented. This
15362 operator creates a new copy of an object (and is also used to
15363 bypass the "implicit conversion" mechanism of the Store operator.)
15365 The ACPI 2.0 semantics for the SizeOf operator are fully
15366 implemented. The change is that performing a SizeOf on a
15367 reference object causes an automatic dereference of the object to
15368 tha actual value before the size is evaluated. This behavior was
15369 undefined in ACPI 1.0.
15371 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
15372 have been implemented. The interrupt polarity and mode are now
15375 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
15376 appearing in Package objects were not properly converted to
15377 integers when the internal Package was converted to an external
15378 object (via the AcpiEvaluateObject interface.)
15380 Fixed a problem with the namespace object deletion mechanism for
15381 objects created by control methods. There were two parts to this
15382 problem: 1) Objects created during the initialization phase method
15383 parse were not being deleted, and 2) The object owner ID mechanism
15384 to track objects was broken.
15386 Fixed a problem where the use of the ASL Scope operator within a
15387 control method would result in an invalid opcode exception.
15389 Fixed a problem introduced in the previous label where the buffer
15390 length required for the _PRT structure was not being returned
15393 Code and Data Size: Current core subsystem library sizes are shown
15394 below. These are the code and data sizes for the acpica.lib
15395 produced by the Microsoft Visual C++ 6.0 compiler, and these
15396 values do not include any ACPI driver or OSPM code. The debug
15397 version of the code includes the debug output trace mechanism and
15398 has a larger code and data size. Note that these values will vary
15399 depending on the efficiency of the compiler and the compiler
15400 options used during generation.
15402 Previous Release (11_20_01)
15403 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15404 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15407 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15408 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15412 Updated all files to apply cleanly against 2.4.16.
15414 Added basic PCI Interrupt Routing Table (PRT) support for IA32
15415 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
15416 version supports both static and dyanmic PRT entries, but dynamic
15417 entries are treated as if they were static (not yet
15418 reconfigurable). Architecture- specific code to use this data is
15419 absent on IA32 but should be available shortly.
15421 Changed the initialization sequence to start the ACPI interpreter
15422 (acpi_init) prior to initialization of the PCI driver (pci_init)
15423 in init/main.c. This ordering is required to support PRT and
15424 facilitate other (future) enhancement. A side effect is that the
15425 ACPI bus driver and certain device drivers can no longer be loaded
15428 Modified the 'make menuconfig' options to allow PCI Interrupt
15429 Routing support to be included without the ACPI Bus and other
15432 3) ASL Compiler, version X2033:
15434 Fixed some issues with the use of the new CopyObject and
15435 DataTableRegion operators. Both are fully functional.
15437 ----------------------------------------
15438 Summary of changes for this label: 11_20_01
15440 20 November 2001. Summary of changes for this release.
15442 1) ACPI CA Core Subsystem:
15444 Updated Index support to match ACPI 2.0 semantics. Storing a
15445 Integer, String, or Buffer to an Index of a Buffer will store only
15446 the least-significant byte of the source to the Indexed buffer
15447 byte. Multiple writes are not performed.
15449 Fixed a problem where the access type used in an AccessAs ASL
15450 operator was not recorded correctly into the field object.
15452 Fixed a problem where ASL Event objects were created in a
15453 signalled state. Events are now created in an unsignalled state.
15455 The internal object cache is now purged after table loading and
15456 initialization to reduce the use of dynamic kernel memory -- on
15457 the assumption that object use is greatest during the parse phase
15458 of the entire table (versus the run-time use of individual control
15461 ACPI 2.0 variable-length packages are now fully operational.
15463 Code and Data Size: Code and Data optimizations have permitted new
15464 feature development with an actual reduction in the library size.
15465 Current core subsystem library sizes are shown below. These are
15466 the code and data sizes for the acpica.lib produced by the
15467 Microsoft Visual C++ 6.0 compiler, and these values do not include
15468 any ACPI driver or OSPM code. The debug version of the code
15469 includes the debug output trace mechanism and has a larger code
15470 and data size. Note that these values will vary depending on the
15471 efficiency of the compiler and the compiler options used during
15474 Previous Release (11_09_01):
15475 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15476 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15479 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15480 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15484 Enhanced the ACPI boot-time initialization code to allow the use
15485 of Local APIC tables for processor enumeration on IA-32, and to
15486 pave the way for a fully MPS-free boot (on SMP systems) in the
15487 near future. This functionality replaces
15488 arch/i386/kernel/acpitables.c, which was introduced in an earlier
15489 2.4.15-preX release. To enable this feature you must add
15490 "acpi_boot=on" to the kernel command line -- see the help entry
15491 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
15494 Restructured the configuration options to allow boot-time table
15495 parsing support without inclusion of the ACPI Interpreter (and
15498 NOTE: This release does not include fixes for the reported events,
15499 power-down, and thermal passive cooling issues (coming soon).
15503 Added additional typechecking for Fields within restricted access
15504 Operation Regions. All fields within EC and CMOS regions must be
15505 declared with ByteAcc. All fields withing SMBus regions must be
15506 declared with the BufferAcc access type.
15508 Fixed a problem where the listing file output of control methods
15509 no longer interleaved the actual AML code with the ASL source
15515 ----------------------------------------
15516 Summary of changes for this label: 11_09_01
15518 1) ACPI CA Core Subsystem:
15520 Implemented ACPI 2.0-defined support for writes to fields with a
15521 Buffer, String, or Integer source operand that is smaller than the
15522 target field. In these cases, the source operand is zero-extended
15523 to fill the target field.
15525 Fixed a problem where a Field starting bit offset (within the
15526 parent operation region) was calculated incorrectly if the
15528 alignment of the field differed from the access width. This
15529 affected CreateWordField, CreateDwordField, CreateQwordField, and
15530 possibly other fields that use the "AccessAny" keyword.
15532 Fixed a problem introduced in the 11_02_01 release where indirect
15533 stores through method arguments did not operate correctly.
15537 Implemented boot-time ACPI table parsing support
15538 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
15539 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
15540 legacy BIOS interfaces (e.g. MPS) for the configuration of system
15541 processors, memory, and interrupts during setup_arch(). Note that
15542 this patch does not include the required architecture-specific
15543 changes required to apply this information -- subsequent patches
15544 will be posted for both IA32 and IA64 to achieve this.
15546 Added low-level sleep support for IA32 platforms, courtesy of Pat
15547 Mochel. This allows IA32 systems to transition to/from various
15548 sleeping states (e.g. S1, S3), although the lack of a centralized
15549 driver model and power-manageable drivers will prevent its
15550 (successful) use on most systems.
15552 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
15553 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
15554 tables" option, etc.
15556 Increased the default timeout for the EC driver from 1ms to 10ms
15557 (1000 cycles of 10us) to try to address AE_TIME errors during EC
15560 ----------------------------------------
15561 Summary of changes for this label: 11_02_01
15563 1) ACPI CA Core Subsystem:
15565 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
15566 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
15569 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
15570 changes to support ACPI 2.0 Qword field access. Read/Write
15571 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
15572 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
15573 the value parameter for the address space handler interface is now
15574 an ACPI_INTEGER. OSL implementations of these interfaces must now
15575 handle the case where the Width parameter is 64.
15577 Index Fields: Fixed a problem where unaligned bit assembly and
15578 disassembly for IndexFields was not supported correctly.
15580 Index and Bank Fields: Nested Index and Bank Fields are now
15581 supported. During field access, a check is performed to ensure
15582 that the value written to an Index or Bank register is not out of
15583 the range of the register. The Index (or Bank) register is
15584 written before each access to the field data. Future support will
15585 include allowing individual IndexFields to be wider than the
15586 DataRegister width.
15588 Fields: Fixed a problem where the AML interpreter was incorrectly
15589 attempting to write beyond the end of a Field/OpRegion. This was
15590 a boundary case that occurred when a DWORD field was written to a
15591 BYTE access OpRegion, forcing multiple writes and causing the
15592 interpreter to write one datum too many.
15594 Fields: Fixed a problem with Field/OpRegion access where the
15595 starting bit address of a field was incorrectly calculated if the
15596 current access type was wider than a byte (WordAcc, DwordAcc, or
15599 Fields: Fixed a problem where forward references to individual
15600 FieldUnits (individual Field names within a Field definition) were
15601 not resolved during the AML table load.
15603 Fields: Fixed a problem where forward references from a Field
15604 definition to the parent Operation Region definition were not
15605 resolved during the AML table load.
15607 Fields: Duplicate FieldUnit names within a scope are now detected
15608 during AML table load.
15610 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
15611 returned an incorrect name for the root node.
15613 Code and Data Size: Code and Data optimizations have permitted new
15614 feature development with an actual reduction in the library size.
15615 Current core subsystem library sizes are shown below. These are
15616 the code and data sizes for the acpica.lib produced by the
15617 Microsoft Visual C++ 6.0 compiler, and these values do not include
15618 any ACPI driver or OSPM code. The debug version of the code
15619 includes the debug output trace mechanism and has a larger code
15620 and data size. Note that these values will vary depending on the
15621 efficiency of the compiler and the compiler options used during
15624 Previous Release (10_18_01):
15625 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15626 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15629 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15630 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15634 Improved /proc processor output (Pavel Machek) Re-added
15635 MODULE_LICENSE("GPL") to all modules.
15637 3) ASL Compiler version X2030:
15639 Duplicate FieldUnit names within a scope are now detected and
15644 Programmer Reference updated to reflect OSL and address space
15645 handler interface changes described above.
15647 ----------------------------------------
15648 Summary of changes for this label: 10_18_01
15650 ACPI CA Core Subsystem:
15652 Fixed a problem with the internal object reference count mechanism
15653 that occasionally caused premature object deletion. This resolves
15654 all of the outstanding problem reports where an object is deleted
15655 in the middle of an interpreter evaluation. Although this problem
15656 only showed up in rather obscure cases, the solution to the
15657 problem involved an adjustment of all reference counts involving
15658 objects attached to namespace nodes.
15660 Fixed a problem with Field support in the interpreter where
15661 writing to an aligned field whose length is an exact multiple (2
15662 or greater) of the field access granularity would cause an attempt
15663 to write beyond the end of the field.
15665 The top level AML opcode execution functions within the
15666 interpreter have been renamed with a more meaningful and
15667 consistent naming convention. The modules exmonad.c and
15668 exdyadic.c were eliminated. New modules are exoparg1.c,
15669 exoparg2.c, exoparg3.c, and exoparg6.c.
15671 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
15673 Fixed a problem where the AML debugger was causing some internal
15674 objects to not be deleted during subsystem termination.
15676 Fixed a problem with the external AcpiEvaluateObject interface
15677 where the subsystem would fault if the named object to be
15678 evaluated refered to a constant such as Zero, Ones, etc.
15680 Fixed a problem with IndexFields and BankFields where the
15681 subsystem would fault if the index, data, or bank registers were
15682 not defined in the same scope as the field itself.
15684 Added printf format string checking for compilers that support
15685 this feature. Corrected more than 50 instances of issues with
15686 format specifiers within invocations of ACPI_DEBUG_PRINT
15687 throughout the core subsystem code.
15689 The ASL "Revision" operator now returns the ACPI support level
15690 implemented in the core - the value "2" since the ACPI 2.0 support
15691 is more than 50% implemented.
15693 Enhanced the output of the AML debugger "dump namespace" command
15694 to output in a more human-readable form.
15696 Current core subsystem library code sizes are shown below. These
15698 are the code and data sizes for the acpica.lib produced by the
15699 Microsoft Visual C++ 6.0 compiler, and these values do not include
15700 any ACPI driver or OSPM code. The debug version of the code
15701 includes the full debug trace mechanism -- leading to a much
15703 larger code and data size. Note that these values will vary
15704 depending on the efficiency of the compiler and the compiler
15705 options used during generation.
15707 Previous Label (09_20_01):
15708 Non-Debug Version: 65K Code, 5K Data, 70K Total
15709 Debug Version: 138K Code, 58K Data, 196K Total
15713 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15714 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15718 Implemented a "Bad BIOS Blacklist" to track machines that have
15719 known ASL/AML problems.
15721 Enhanced the /proc interface for the thermal zone driver and added
15722 support for _HOT (the critical suspend trip point). The 'info'
15723 file now includes threshold/policy information, and allows setting
15724 of _SCP (cooling preference) and _TZP (polling frequency) values
15725 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
15726 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
15727 preference to the passive/quiet mode (if supported by the ASL).
15729 Implemented a workaround for a gcc bug that resuted in an OOPs
15730 when loading the control method battery driver.
15732 ----------------------------------------
15733 Summary of changes for this label: 09_20_01
15735 ACPI CA Core Subsystem:
15737 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
15738 modified to allow individual GPE levels to be flagged as wake-
15739 enabled (i.e., these GPEs are to remain enabled when the platform
15742 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
15743 support wake-enabled GPEs. This means that upon entering the
15744 sleep state, all GPEs that are not wake-enabled are disabled.
15745 When leaving the sleep state, these GPEs are reenabled.
15747 A local double-precision divide/modulo module has been added to
15748 enhance portability to OS kernels where a 64-bit math library is
15749 not available. The new module is "utmath.c".
15751 Several optimizations have been made to reduce the use of CPU
15752 stack. Originally over 2K, the maximum stack usage is now below
15753 2K at 1860 bytes (1.82k)
15755 Fixed a problem with the AcpiGetFirmwareTable interface where the
15756 root table pointer was not mapped into a logical address properly.
15758 Fixed a problem where a NULL pointer was being dereferenced in the
15759 interpreter code for the ASL Notify operator.
15761 Fixed a problem where the use of the ASL Revision operator
15762 returned an error. This operator now returns the current version
15763 of the ACPI CA core subsystem.
15765 Fixed a problem where objects passed as control method parameters
15766 to AcpiEvaluateObject were always deleted at method termination.
15767 However, these objects may end up being stored into the namespace
15768 by the called method. The object reference count mechanism was
15769 applied to these objects instead of a force delete.
15771 Fixed a problem where static strings or buffers (contained in the
15772 AML code) that are declared as package elements within the ASL
15773 code could cause a fault because the interpreter would attempt to
15774 delete them. These objects are now marked with the "static
15775 object" flag to prevent any attempt to delete them.
15777 Implemented an interpreter optimization to use operands directly
15778 from the state object instead of extracting the operands to local
15779 variables. This reduces stack use and code size, and improves
15782 The module exxface.c was eliminated as it was an unnecessary extra
15785 Current core subsystem library code sizes are shown below. These
15786 are the code and data sizes for the acpica.lib produced by the
15787 Microsoft Visual C++ 6.0 compiler, and these values do not include
15788 any ACPI driver or OSPM code. The debug version of the code
15789 includes the full debug trace mechanism -- leading to a much
15790 larger code and data size. Note that these values will vary
15791 depending on the efficiency of the compiler and the compiler
15792 options used during generation.
15794 Non-Debug Version: 65K Code, 5K Data, 70K Total
15795 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
15796 Total (Previously 195K)
15800 Support for ACPI 2.0 64-bit integers has been added. All ACPI
15801 Integer objects are now 64 bits wide
15803 All Acpi data types and structures are now in lower case. Only
15804 Acpi macros are upper case for differentiation.
15808 Changes to the external interfaces as described above.
15810 ----------------------------------------
15811 Summary of changes for this label: 08_31_01
15813 ACPI CA Core Subsystem:
15815 A bug with interpreter implementation of the ASL Divide operator
15816 was found and fixed. The implicit function return value (not the
15817 explicit store operands) was returning the remainder instead of
15818 the quotient. This was a longstanding bug and it fixes several
15819 known outstanding issues on various platforms.
15821 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
15822 been further optimized for size. There are 700 invocations of the
15823 DEBUG_PRINT macro alone, so each optimization reduces the size of
15824 the debug version of the subsystem significantly.
15826 A stack trace mechanism has been implemented. The maximum stack
15827 usage is about 2K on 32-bit platforms. The debugger command "stat
15828 stack" will display the current maximum stack usage.
15830 All public symbols and global variables within the subsystem are
15831 now prefixed with the string "Acpi". This keeps all of the
15832 symbols grouped together in a kernel map, and avoids conflicts
15833 with other kernel subsystems.
15835 Most of the internal fixed lookup tables have been moved into the
15836 code segment via the const operator.
15838 Several enhancements have been made to the interpreter to both
15839 reduce the code size and improve performance.
15841 Current core subsystem library code sizes are shown below. These
15842 are the code and data sizes for the acpica.lib produced by the
15843 Microsoft Visual C++ 6.0 compiler, and these values do not include
15844 any ACPI driver or OSPM code. The debug version of the code
15845 includes the full debug trace mechanism which contains over 700
15846 invocations of the DEBUG_PRINT macro, 500 function entry macro
15847 invocations, and over 900 function exit macro invocations --
15848 leading to a much larger code and data size. Note that these
15849 values will vary depending on the efficiency of the compiler and
15850 the compiler options used during generation.
15852 Non-Debug Version: 64K Code, 5K Data, 69K Total
15853 Debug Version: 137K Code, 58K Data, 195K Total
15857 Implemented wbinvd() macro, pending a kernel-wide definition.
15859 Fixed /proc/acpi/event to handle poll() and short reads.
15861 ASL Compiler, version X2026:
15863 Fixed a problem introduced in the previous label where the AML
15865 code emitted for package objects produced packages with zero
15868 ----------------------------------------
15869 Summary of changes for this label: 08_16_01
15871 ACPI CA Core Subsystem:
15873 The following ACPI 2.0 ASL operators have been implemented in the
15874 AML interpreter (These are already supported by the Intel ASL
15875 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
15876 ToBuffer. Support for 64-bit AML constants is implemented in the
15877 AML parser, debugger, and disassembler.
15879 The internal memory tracking mechanism (leak detection code) has
15880 been upgraded to reduce the memory overhead (a separate tracking
15881 block is no longer allocated for each memory allocation), and now
15882 supports all of the internal object caches.
15884 The data structures and code for the internal object caches have
15885 been coelesced and optimized so that there is a single cache and
15886 memory list data structure and a single group of functions that
15887 implement generic cache management. This has reduced the code
15888 size in both the debug and release versions of the subsystem.
15890 The DEBUG_PRINT macro(s) have been optimized for size and replaced
15891 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
15892 different, because it generates a single call to an internal
15893 function. This results in a savings of about 90 bytes per
15894 invocation, resulting in an overall code and data savings of about
15895 16% in the debug version of the subsystem.
15899 Fixed C3 disk corruption problems and re-enabled C3 on supporting
15902 Integrated low-level sleep code by Patrick Mochel.
15904 Further tweaked source code Linuxization.
15910 Support for ACPI 2.0 variable length packages is fixed/completed.
15912 Fixed a problem where the optional length parameter for the ACPI
15913 2.0 ToString operator.
15915 Fixed multiple extraneous error messages when a syntax error is
15916 detected within the declaration line of a control method.
15918 ----------------------------------------
15919 Summary of changes for this label: 07_17_01
15921 ACPI CA Core Subsystem:
15923 Added a new interface named AcpiGetFirmwareTable to obtain any
15924 ACPI table via the ACPI signature. The interface can be called at
15925 any time during kernel initialization, even before the kernel
15926 virtual memory manager is initialized and paging is enabled. This
15927 allows kernel subsystems to obtain ACPI tables very early, even
15928 before the ACPI CA subsystem is initialized.
15930 Fixed a problem where Fields defined with the AnyAcc attribute
15931 could be resolved to the incorrect address under the following
15932 conditions: 1) the field width is larger than 8 bits and 2) the
15933 parent operation region is not defined on a DWORD boundary.
15935 Fixed a problem where the interpreter is not being locked during
15936 namespace initialization (during execution of the _INI control
15937 methods), causing an error when an attempt is made to release it
15940 ACPI 2.0 support in the AML Interpreter has begun and will be
15941 ongoing throughout the rest of this year. In this label, The Mod
15942 operator is implemented.
15944 Added a new data type to contain full PCI addresses named
15945 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
15946 and Function values.
15950 Enhanced the Linux version of the source code to change most
15951 capitalized ACPI type names to lowercase. For example, all
15952 instances of ACPI_STATUS are changed to acpi_status. This will
15953 result in a large diff, but the change is strictly cosmetic and
15954 aligns the CA code closer to the Linux coding standard.
15958 The interfaces to the PCI configuration space have been changed to
15959 add the PCI Segment number and to split the single 32-bit combined
15960 DeviceFunction field into two 16-bit fields. This was
15961 accomplished by moving the four values that define an address in
15962 PCI configuration space (segment, bus, device, and function) to
15963 the new ACPI_PCI_ID structure.
15965 The changes to the PCI configuration space interfaces led to a
15966 reexamination of the complete set of address space access
15967 interfaces for PCI, I/O, and Memory. The previously existing 18
15968 interfaces have proven difficult to maintain (any small change
15969 must be propagated across at least 6 interfaces) and do not easily
15970 allow for future expansion to 64 bits if necessary. Also, on some
15971 systems, it would not be appropriate to demultiplex the access
15972 width (8, 16, 32,or 64) before calling the OSL if the
15973 corresponding native OS interfaces contain a similar access width
15974 parameter. For these reasons, the 18 address space interfaces
15975 have been replaced by these 6 new ones:
15977 AcpiOsReadPciConfiguration
15978 AcpiOsWritePciConfiguration
15984 Added a new interface named AcpiOsGetRootPointer to allow the OSL
15985 to perform the platform and/or OS-specific actions necessary to
15986 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
15987 interface will simply call down to the CA core to perform the low-
15988 memory search for the table. On IA-64, the RSDP is obtained from
15989 EFI. Migrating this interface to the OSL allows the CA core to
15991 remain OS and platform independent.
15993 Added a new interface named AcpiOsSignal to provide a generic
15994 "function code and pointer" interface for various miscellaneous
15995 signals and notifications that must be made to the host OS. The
15996 first such signals are intended to support the ASL Fatal and
15997 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
15998 interface has been obsoleted.
16000 The definition of the AcpiFormatException interface has been
16001 changed to simplify its use. The caller no longer must supply a
16002 buffer to the call; A pointer to a const string is now returned
16003 directly. This allows the call to be easily used in printf
16004 statements, etc. since the caller does not have to manage a local
16008 ASL Compiler, Version X2025:
16010 The ACPI 2.0 Switch/Case/Default operators have been implemented
16011 and are fully functional. They will work with all ACPI 1.0
16012 interpreters, since the operators are simply translated to If/Else
16015 The ACPI 2.0 ElseIf operator is implemented and will also work
16016 with 1.0 interpreters, for the same reason.
16018 Implemented support for ACPI 2.0 variable-length packages. These
16019 packages have a separate opcode, and their size is determined by
16020 the interpreter at run-time.
16022 Documentation The ACPI CA Programmer Reference has been updated to
16023 reflect the new interfaces and changes to existing interfaces.
16025 ------------------------------------------
16026 Summary of changes for this label: 06_15_01
16028 ACPI CA Core Subsystem:
16030 Fixed a problem where a DWORD-accessed field within a Buffer
16031 object would get its byte address inadvertently rounded down to
16032 the nearest DWORD. Buffers are always Byte-accessible.
16034 ASL Compiler, version X2024:
16036 Fixed a problem where the Switch() operator would either fault or
16037 hang the compiler. Note however, that the AML code for this ACPI
16038 2.0 operator is not yet implemented.
16040 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16043 Implementation of the CreateField operator automatically converts
16044 a reference to a named field within a resource descriptor from a
16045 byte offset to a bit offset if required.
16047 Added some missing named fields from the resource descriptor
16048 support. These are the names that are automatically created by the
16049 compiler to reference fields within a descriptor. They are only
16050 valid at compile time and are not passed through to the AML
16053 Resource descriptor named fields are now typed as Integers and
16054 subject to compile-time typechecking when used in expressions.
16056 ------------------------------------------
16057 Summary of changes for this label: 05_18_01
16059 ACPI CA Core Subsystem:
16061 Fixed a couple of problems in the Field support code where bits
16062 from adjacent fields could be returned along with the proper field
16063 bits. Restructured the field support code to improve performance,
16064 readability and maintainability.
16066 New DEBUG_PRINTP macro automatically inserts the procedure name
16067 into the output, saving hundreds of copies of procedure name
16068 strings within the source, shrinking the memory footprint of the
16069 debug version of the core subsystem.
16071 Source Code Structure:
16073 The source code directory tree was restructured to reflect the
16074 current organization of the component architecture. Some files
16075 and directories have been moved and/or renamed.
16079 Fixed leaking kacpidpc processes.
16081 Fixed queueing event data even when /proc/acpi/event is not
16084 ASL Compiler, version X2020:
16086 Memory allocation performance enhancement - over 24X compile time
16087 improvement on large ASL files. Parse nodes and namestring
16088 buffers are now allocated from a large internal compiler buffer.
16090 The temporary .SRC file is deleted unless the "-s" option is
16093 The "-d" debug output option now sends all output to the .DBG file
16094 instead of the console.
16096 "External" second parameter is now optional
16098 "ElseIf" syntax now properly allows the predicate
16100 Last operand to "Load" now recognized as a Target operand
16102 Debug object can now be used anywhere as a normal object.
16104 ResourceTemplate now returns an object of type BUFFER
16106 EISAID now returns an object of type INTEGER
16108 "Index" now works with a STRING operand
16110 "LoadTable" now accepts optional parameters
16112 "ToString" length parameter is now optional
16114 "Interrupt (ResourceType," parse error fixed.
16116 "Register" with a user-defined region space parse error fixed
16118 Escaped backslash at the end of a string ("\\") scan/parse error
16121 "Revision" is now an object of type INTEGER.
16125 ------------------------------------------
16126 Summary of changes for this label: 05_02_01
16130 /proc/acpi/event now blocks properly.
16132 Removed /proc/sys/acpi. You can still dump your DSDT from
16135 ACPI CA Core Subsystem:
16137 Fixed a problem introduced in the previous label where some of the
16138 "small" resource descriptor types were not recognized.
16140 Improved error messages for the case where an ASL Field is outside
16141 the range of the parent operation region.
16143 ASL Compiler, version X2018:
16146 Added error detection for ASL Fields that extend beyond the length
16147 of the parent operation region (only if the length of the region
16148 is known at compile time.) This includes fields that have a
16149 minimum access width that is smaller than the parent region, and
16150 individual field units that are partially or entirely beyond the
16151 extent of the parent.
16155 ------------------------------------------
16156 Summary of changes for this label: 04_27_01
16158 ACPI CA Core Subsystem:
16160 Fixed a problem where the namespace mutex could be released at the
16161 wrong time during execution of AcpiRemoveAddressSpaceHandler.
16163 Added optional thread ID output for debug traces, to simplify
16164 debugging of multiple threads. Added context switch notification
16165 when the debug code realizes that a different thread is now
16166 executing ACPI code.
16168 Some additional external data types have been prefixed with the
16169 string "ACPI_" for consistency. This may effect existing code.
16170 The data types affected are the external callback typedefs - e.g.,
16172 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
16176 Fixed an issue with the OSL semaphore implementation where a
16177 thread was waking up with an error from receiving a SIGCHLD
16180 Linux version of ACPI CA now uses the system C library for string
16181 manipulation routines instead of a local implementation.
16183 Cleaned up comments and removed TBDs.
16185 ASL Compiler, version X2017:
16187 Enhanced error detection and reporting for all file I/O
16192 Programmer Reference updated to version 1.06.
16196 ------------------------------------------
16197 Summary of changes for this label: 04_13_01
16199 ACPI CA Core Subsystem:
16201 Restructured support for BufferFields and RegionFields.
16202 BankFields support is now fully operational. All known 32-bit
16203 limitations on field sizes have been removed. Both BufferFields
16204 and (Operation) RegionFields are now supported by the same field
16207 Resource support now supports QWORD address and IO resources. The
16208 16/32/64 bit address structures and the Extended IRQ structure
16209 have been changed to properly handle Source Resource strings.
16211 A ThreadId of -1 is now used to indicate a "mutex not acquired"
16212 condition internally and must never be returned by AcpiOsThreadId.
16213 This reserved value was changed from 0 since Unix systems allow a
16218 Driver code reorganized to enhance portability
16220 Added a kernel configuration option to control ACPI_DEBUG
16222 Fixed the EC driver to honor _GLK.
16224 ASL Compiler, version X2016:
16226 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
16227 address space was set to 0, not 0x7f as it should be.
16229 ------------------------------------------
16230 Summary of changes for this label: 03_13_01
16232 ACPI CA Core Subsystem:
16234 During ACPI initialization, the _SB_._INI method is now run if
16237 Notify handler fix - notifies are deferred until the parent method
16238 completes execution. This fixes the "mutex already acquired"
16239 issue seen occasionally.
16241 Part of the "implicit conversion" rules in ACPI 2.0 have been
16242 found to cause compatibility problems with existing ASL/AML. The
16243 convert "result-to-target-type" implementation has been removed
16244 for stores to method Args and Locals. Source operand conversion
16245 is still fully implemented. Possible changes to ACPI 2.0
16246 specification pending.
16248 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
16251 Fix for compiler warnings for 64-bit compiles.
16255 /proc output aligned for easier parsing.
16257 Release-version compile problem fixed.
16259 New kernel configuration options documented in Configure.help.
16261 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
16266 Power resource driver integrated with bus manager.
16268 Fixed kernel fault during active cooling for thermal zones.
16272 The source code tree has been restructured.
16276 ------------------------------------------
16277 Summary of changes for this label: 03_02_01
16279 Linux OS Services Layer (OSL):
16281 Major revision of all Linux-specific code.
16283 Modularized all ACPI-specific drivers.
16285 Added new thermal zone and power resource drivers.
16287 Revamped /proc interface (new functionality is under /proc/acpi).
16289 New kernel configuration options.
16291 Linux known issues:
16293 New kernel configuration options not documented in Configure.help
16297 Module dependencies not currently implemented. If used, they
16298 should be loaded in this order: busmgr, power, ec, system,
16299 processor, battery, ac_adapter, button, thermal.
16301 Modules will not load if CONFIG_MODVERSION is set.
16303 IBM 600E - entering S5 may reboot instead of shutting down.
16305 IBM 600E - Sleep button may generate "Invalid <NULL> context"
16308 Some systems may fail with "execution mutex already acquired"
16311 ACPI CA Core Subsystem:
16313 Added a new OSL Interface, AcpiOsGetThreadId. This was required
16314 for the deadlock detection code. Defined to return a non-zero, 32-
16315 bit thread ID for the currently executing thread. May be a non-
16316 zero constant integer on single-thread systems.
16318 Implemented deadlock detection for internal subsystem mutexes. We
16319 may add conditional compilation for this code (debug only) later.
16321 ASL/AML Mutex object semantics are now fully supported. This
16322 includes multiple acquires/releases by owner and support for the
16324 Mutex SyncLevel parameter.
16326 A new "Force Release" mechanism automatically frees all ASL
16327 Mutexes that have been acquired but not released when a thread
16328 exits the interpreter. This forces conformance to the ACPI spec
16329 ("All mutexes must be released when an invocation exits") and
16330 prevents deadlocked ASL threads. This mechanism can be expanded
16331 (later) to monitor other resource acquisitions if OEM ASL code
16332 continues to misbehave (which it will).
16334 Several new ACPI exception codes have been added for the Mutex
16337 Recursive method calls are now allowed and supported (the ACPI
16338 spec does in fact allow recursive method calls.) The number of
16339 recursive calls is subject to the restrictions imposed by the
16340 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
16343 Implemented support for the SyncLevel parameter for control
16344 methods (ACPI 2.0 feature)
16346 Fixed a deadlock problem when multiple threads attempted to use
16349 Fixed a problem where the string length of a String package
16350 element was not always set in a package returned from
16351 AcpiEvaluateObject.
16353 Fixed a problem where the length of a String package element was
16354 not always included in the length of the overall package returned
16355 from AcpiEvaluateObject.
16357 Added external interfaces (Acpi*) to the ACPI debug memory
16358 manager. This manager keeps a list of all outstanding
16359 allocations, and can therefore detect memory leaks and attempts to
16360 free memory blocks more than once. Useful for code such as the
16361 power manager, etc. May not be appropriate for device drivers.
16362 Performance with the debug code enabled is slow.
16364 The ACPI Global Lock is now an optional hardware element.
16366 ASL Compiler Version X2015:
16368 Integrated changes to allow the compiler to be generated on
16369 multiple platforms.
16371 Linux makefile added to generate the compiler on Linux
16375 All platform-specific headers have been moved to their own
16376 subdirectory, Include/Platform.
16378 New source file added, Interpreter/ammutex.c
16380 New header file, Include/acstruct.h
16384 The programmer reference has been updated for the following new
16385 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
16387 ------------------------------------------
16388 Summary of changes for this label: 02_08_01
16390 Core ACPI CA Subsystem: Fixed a problem where an error was
16391 incorrectly returned if the return resource buffer was larger than
16392 the actual data (in the resource interfaces).
16394 References to named objects within packages are resolved to the
16396 full pathname string before packages are returned directly (via
16397 the AcpiEvaluateObject interface) or indirectly via the resource
16400 Linux OS Services Layer (OSL):
16402 Improved /proc battery interface.
16405 Added C-state debugging output and other miscellaneous fixes.
16407 ASL Compiler Version X2014:
16409 All defined method arguments can now be used as local variables,
16410 including the ones that are not actually passed in as parameters.
16411 The compiler tracks initialization of the arguments and issues an
16412 exception if they are used without prior assignment (just like
16415 The -o option now specifies a filename prefix that is used for all
16416 output files, including the AML output file. Otherwise, the
16417 default behavior is as follows: 1) the AML goes to the file
16418 specified in the DSDT. 2) all other output files use the input
16419 source filename as the base.
16421 ------------------------------------------
16422 Summary of changes for this label: 01_25_01
16424 Core ACPI CA Subsystem: Restructured the implementation of object
16425 store support within the interpreter. This includes support for
16426 the Store operator as well as any ASL operators that include a
16429 Partially implemented support for Implicit Result-to-Target
16430 conversion. This is when a result object is converted on the fly
16431 to the type of an existing target object. Completion of this
16432 support is pending further analysis of the ACPI specification
16433 concerning this matter.
16435 CPU-specific code has been removed from the subsystem (hardware
16438 New Power Management Timer functions added
16440 Linux OS Services Layer (OSL): Moved system state transition code
16441 to the core, fixed it, and modified Linux OSL accordingly.
16443 Fixed C2 and C3 latency calculations.
16446 We no longer use the compilation date for the version message on
16447 initialization, but retrieve the version from AcpiGetSystemInfo().
16449 Incorporated for fix Sony VAIO machines.
16451 Documentation: The Programmer Reference has been updated and
16455 ASL Compiler: Version X2013: Fixed a problem where the line
16456 numbering and error reporting could get out of sync in the
16457 presence of multiple include files.
16459 ------------------------------------------
16460 Summary of changes for this label: 01_15_01
16462 Core ACPI CA Subsystem:
16464 Implemented support for type conversions in the execution of the
16465 ASL Concatenate operator (The second operand is converted to
16466 match the type of the first operand before concatenation.)
16468 Support for implicit source operand conversion is partially
16469 implemented. The ASL source operand types Integer, Buffer, and
16470 String are freely interchangeable for most ASL operators and are
16471 converted by the interpreter on the fly as required. Implicit
16472 Target operand conversion (where the result is converted to the
16473 target type before storing) is not yet implemented.
16475 Support for 32-bit and 64-bit BCD integers is implemented.
16477 Problem fixed where a field read on an aligned field could cause a
16478 read past the end of the field.
16480 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
16481 does not return a value, but the caller expects one. (The ASL
16482 compiler flags this as a warning.)
16487 1. Static typechecking of all operands is implemented. This
16488 prevents the use of invalid objects (such as using a Package where
16489 an Integer is required) at compile time instead of at interpreter
16491 2. The ASL source line is printed with ALL errors and warnings.
16492 3. Bug fix for source EOF without final linefeed.
16493 4. Debug option is split into a parse trace and a namespace trace.
16494 5. Namespace output option (-n) includes initial values for
16495 integers and strings.
16496 6. Parse-only option added for quick syntax checking.
16497 7. Compiler checks for duplicate ACPI name declarations
16500 1. Relaxed typechecking to allow interchangeability between
16501 strings, integers, and buffers. These types are now converted by
16502 the interpreter at runtime.
16503 2. Compiler reports time taken by each internal subsystem in the
16507 ------------------------------------------
16508 Summary of changes for this label: 12_14_00
16512 This is the first official release of the compiler. Since the
16513 compiler requires elements of the Core Subsystem, this label
16514 synchronizes everything.
16516 ------------------------------------------
16517 Summary of changes for this label: 12_08_00
16520 Fixed a problem where named references within the ASL definition
16521 of both OperationRegions and CreateXXXFields did not work
16522 properly. The symptom was an AE_AML_OPERAND_TYPE during
16523 initialization of the region/field. This is similar (but not
16524 related internally) to the problem that was fixed in the last
16527 Implemented both 32-bit and 64-bit support for the BCD ASL
16528 functions ToBCD and FromBCD.
16530 Updated all legal headers to include "2000" in the copyright
16533 ------------------------------------------
16534 Summary of changes for this label: 12_01_00
16536 Fixed a problem where method invocations within the ASL definition
16537 of both OperationRegions and CreateXXXFields did not work
16538 properly. The symptom was an AE_AML_OPERAND_TYPE during
16539 initialization of the region/field:
16541 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
16542 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
16545 Fixed a problem where operators with more than one nested
16546 subexpression would fail. The symptoms were varied, by mostly
16547 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
16548 problem that has gone unnoticed until now.
16550 Subtract (Add (1,2), Multiply (3,4))
16552 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
16553 previous build (The prefix part of a relative path was handled
16556 Fixed a problem where Operation Region initialization failed if
16557 the operation region name was a "namepath" instead of a simple
16558 "nameseg". Symptom was an AE_NO_OPERAND error.
16560 Fixed a problem where an assignment to a local variable via the
16561 indirect RefOf mechanism only worked for the first such
16562 assignment. Subsequent assignments were ignored.
16564 ------------------------------------------
16565 Summary of changes for this label: 11_15_00
16567 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
16568 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
16569 the AML interpreter does NOT have support for the new 2.0 ASL
16570 grammar terms at this time.
16572 All ACPI hardware access is via the GAS structures in the ACPI 2.0
16575 All physical memory addresses across all platforms are now 64 bits
16576 wide. Logical address width remains dependent on the platform
16579 AcpiOsMapMemory interface changed to a 64-bit physical address.
16581 The AML interpreter integer size is now 64 bits, as per the ACPI
16584 For backwards compatibility with ACPI 1.0, ACPI tables with a
16585 revision number less than 2 use 32-bit integers only.
16587 Fixed a problem where the evaluation of OpRegion operands did not
16588 always resolve them to numbers properly.
16590 ------------------------------------------
16591 Summary of changes for this label: 10_20_00
16593 Fix for CBN_._STA issue. This fix will allow correct access to
16594 CBN_ OpRegions when the _STA returns 0x8.
16596 Support to convert ACPI constants (Ones, Zeros, One) to actual
16597 values before a package object is returned
16599 Fix for method call as predicate to if/while construct causing
16600 incorrect if/while behavior
16602 Fix for Else block package lengths sometimes calculated wrong (if
16605 Fix for Processor object length field, was always zero
16607 Table load abort if FACP sanity check fails
16609 Fix for problem with Scope(name) if name already exists
16611 Warning emitted if a named object referenced cannot be found
16612 (resolved) during method execution.
16618 ------------------------------------------
16619 Summary of changes for this label: 9_29_00
16621 New table initialization interfaces: AcpiInitializeSubsystem no
16622 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
16623 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
16624 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
16627 Note: These interface changes require changes to all existing OSDs
16629 The PCI_Config default address space handler is always installed
16630 at the root namespace object.
16632 -------------------------------------------
16633 Summary of changes for this label: 09_15_00
16635 The new initialization architecture is implemented. New
16636 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
16637 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
16639 (Namespace is automatically loaded when a table is loaded)
16641 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
16642 52 bytes to 32 bytes. There is usually one of these for every
16643 namespace object, so the memory savings is significant.
16645 Implemented just-in-time evaluation of the CreateField operators.
16647 Bug fixes for IA-64 support have been integrated.
16649 Additional code review comments have been implemented
16651 The so-called "third pass parse" has been replaced by a final walk
16652 through the namespace to initialize all operation regions (address
16653 spaces) and fields that have not yet been initialized during the
16654 execution of the various _INI and REG methods.
16656 New file - namespace/nsinit.c
16658 -------------------------------------------
16659 Summary of changes for this label: 09_01_00
16661 Namespace manager data structures have been reworked to change the
16662 primary object from a table to a single object. This has
16663 resulted in dynamic memory savings of 3X within the namespace and
16664 2X overall in the ACPI CA subsystem.
16666 Fixed problem where the call to AcpiEvFindPciRootBuses was
16667 inadvertently left commented out.
16669 Reduced the warning count when generating the source with the GCC
16672 Revision numbers added to each module header showing the
16673 SourceSafe version of the file. Please refer to this version
16674 number when giving us feedback or comments on individual modules.
16676 The main object types within the subsystem have been renamed to
16677 clarify their purpose:
16679 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
16680 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
16681 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
16683 NOTE: no changes to the initialization sequence are included in
16686 -------------------------------------------
16687 Summary of changes for this label: 08_23_00
16689 Fixed problem where TerminateControlMethod was being called
16690 multiple times per method
16692 Fixed debugger problem where single stepping caused a semaphore to
16695 Improved performance through additional parse object caching -
16696 added ACPI_EXTENDED_OP type
16698 -------------------------------------------
16699 Summary of changes for this label: 08_10_00
16701 Parser/Interpreter integration: Eliminated the creation of
16702 complete parse trees for ACPI tables and control methods.
16703 Instead, parse subtrees are created and then deleted as soon as
16704 they are processed (Either entered into the namespace or executed
16705 by the interpreter). This reduces the use of dynamic kernel
16706 memory significantly. (about 10X)
16708 Exception codes broken into classes and renumbered. Be sure to
16709 recompile all code that includes acexcep.h. Hopefully we won't
16710 have to renumber the codes again now that they are split into
16711 classes (environment, programmer, AML code, ACPI table, and
16714 Fixed some additional alignment issues in the Resource Manager
16717 Implemented semaphore tracking in the AcpiExec utility, and fixed
16718 several places where mutexes/semaphores were being unlocked
16719 without a corresponding lock operation. There are no known
16720 semaphore or mutex "leaks" at this time.
16722 Fixed the case where an ASL Return operator is used to return an
16725 -------------------------------------------
16726 Summary of changes for this label: 07_28_00
16728 Fixed a problem with the way addresses were calculated in
16729 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
16730 manifested itself when a Field was created with WordAccess or
16731 DwordAccess, but the field unit defined within the Field was less
16733 than a Word or Dword.
16735 Fixed a problem in AmlDumpOperands() module's loop to pull
16736 operands off of the operand stack to display information. The
16737 problem manifested itself as a TLB error on 64-bit systems when
16738 accessing an operand stack with two or more operands.
16740 Fixed a problem with the PCI configuration space handlers where
16741 context was getting confused between accesses. This required a
16742 change to the generic address space handler and address space
16743 setup definitions. Handlers now get both a global handler context
16744 (this is the one passed in by the user when executing
16745 AcpiInstallAddressSpaceHandler() and a specific region context
16746 that is unique to each region (For example, the _ADR, _SEG and
16747 _BBN values associated with a specific region). The generic
16748 function definitions have changed to the following:
16750 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
16751 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
16752 *HandlerContext, // This used to be void *Context void
16753 *RegionContext); // This is an additional parameter
16755 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
16756 RegionHandle, UINT32 Function, void *HandlerContext, void
16757 **RegionContext); // This used to be **ReturnContext
16759 -------------------------------------------
16760 Summary of changes for this label: 07_21_00
16762 Major file consolidation and rename. All files within the
16763 interpreter have been renamed as well as most header files. This
16764 was done to prevent collisions with existing files in the host
16765 OSs -- filenames such as "config.h" and "global.h" seem to be
16766 quite common. The VC project files have been updated. All
16767 makefiles will require modification.
16769 The parser/interpreter integration continues in Phase 5 with the
16770 implementation of a complete 2-pass parse (the AML is parsed
16771 twice) for each table; This avoids the construction of a huge
16772 parse tree and therefore reduces the amount of dynamic memory
16773 required by the subsystem. Greater use of the parse object cache
16774 means that performance is unaffected.
16776 Many comments from the two code reviews have been rolled in.
16778 The 64-bit alignment support is complete.
16780 -------------------------------------------
16781 Summary of changes for this label: 06_30_00
16783 With a nod and a tip of the hat to the technology of yesteryear,
16784 we've added support in the source code for 80 column output
16785 devices. The code is now mostly constrained to 80 columns or
16786 less to support environments and editors that 1) cannot display
16787 or print more than 80 characters on a single line, and 2) cannot
16788 disable line wrapping.
16790 A major restructuring of the namespace data structure has been
16791 completed. The result is 1) cleaner and more
16792 understandable/maintainable code, and 2) a significant reduction
16793 in the dynamic memory requirement for each named ACPI object
16796 -------------------------------------------
16797 Summary of changes for this label: 06_23_00
16799 Linux support has been added. In order to obtain approval to get
16800 the ACPI CA subsystem into the Linux kernel, we've had to make
16801 quite a few changes to the base subsystem that will affect all
16802 users (all the changes are generic and OS- independent). The
16803 effects of these global changes have been somewhat far reaching.
16804 Files have been merged and/or renamed and interfaces have been
16805 renamed. The major changes are described below.
16807 Osd* interfaces renamed to AcpiOs* to eliminate namespace
16808 pollution/confusion within our target kernels. All OSD
16809 interfaces must be modified to match the new naming convention.
16811 Files merged across the subsystem. A number of the smaller source
16812 and header files have been merged to reduce the file count and
16813 increase the density of the existing files. There are too many
16814 to list here. In general, makefiles that call out individual
16815 files will require rebuilding.
16817 Interpreter files renamed. All interpreter files now have the
16818 prefix am* instead of ie* and is*.
16820 Header files renamed: The acapi.h file is now acpixf.h. The
16821 acpiosd.h file is now acpiosxf.h. We are removing references to
16822 the acronym "API" since it is somewhat windowsy. The new name is
16823 "external interface" or xface or xf in the filenames.j
16826 All manifest constants have been forced to upper case (some were
16827 mixed case.) Also, the string "ACPI_" has been prepended to many
16828 (not all) of the constants, typedefs, and structs.
16830 The globals "DebugLevel" and "DebugLayer" have been renamed
16831 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
16833 All other globals within the subsystem are now prefixed with
16834 "AcpiGbl_" Internal procedures within the subsystem are now
16835 prefixed with "Acpi" (with only a few exceptions). The original
16836 two-letter abbreviation for the subcomponent remains after "Acpi"
16837 - for example, CmCallocate became AcpiCmCallocate.
16839 Added a source code translation/conversion utility. Used to
16840 generate the Linux source code, it can be modified to generate
16841 other types of source as well. Can also be used to cleanup
16842 existing source by removing extraneous spaces and blank lines.
16843 Found in tools/acpisrc/*
16845 OsdUnMapMemory was renamed to OsdUnmapMemory and then
16846 AcpiOsUnmapMemory. (UnMap became Unmap).
16848 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
16849 When set to one, this indicates that the caller wants to use the
16851 semaphore as a mutex, not a counting semaphore. ACPI CA uses
16852 both types. However, implementers of this call may want to use
16853 different OS primitives depending on the type of semaphore
16854 requested. For example, some operating systems provide separate
16856 "mutex" and "semaphore" interfaces - where the mutex interface is
16857 much faster because it doesn't have all the overhead of a full
16858 semaphore implementation.
16860 Fixed a deadlock problem where a method that accesses the PCI
16861 address space can block forever if it is the first access to the
16864 -------------------------------------------
16865 Summary of changes for this label: 06_02_00
16867 Support for environments that cannot handle unaligned data
16868 accesses (e.g. firmware and OS environments devoid of alignment
16869 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
16870 been added (via configurable macros) in these three areas: -
16871 Transfer of data from the raw AML byte stream is done via byte
16872 moves instead of word/dword/qword moves. - External objects are
16873 aligned within the user buffer, including package elements (sub-
16874 objects). - Conversion of name strings to UINT32 Acpi Names is now
16877 The Store operator was modified to mimic Microsoft's
16878 implementation when storing to a Buffer Field.
16880 Added a check of the BM_STS bit before entering C3.
16882 The methods subdirectory has been obsoleted and removed. A new
16883 file, cmeval.c subsumes the functionality.
16885 A 16-bit (DOS) version of AcpiExec has been developed. The
16886 makefile is under the acpiexec directory.