1 ----------------------------------------
2 19 January 2017. Summary of changes for version 20170119:
4 This release is available at https://acpica.org/downloads
6 1) General ACPICA software:
8 Entire source code base: Added the 2017 copyright to all source code
9 legal/licensing module headers and utility/tool signons. This includes
10 the standard Linux dual-license header. This affects virtually every file
11 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
12 the ACPICA test suite.
15 2) iASL Compiler/Disassembler and Tools:
17 iASL: Removed/fixed an inadvertent remark when a method argument
18 containing a reference is used as a target operand within the method (and
19 never used as a simple argument), as in the example below. Jeffrey Hugo.
21 dsdt.asl 1507: Store(0x1, Arg0)
22 Remark 2146 - ^ Method Argument is never used (Arg0)
24 All tools: Removed the bit width of the compiler that generated the tool
25 from the common signon for all user space tools. This proved to be
26 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
27 from the generic makefiles (Thomas Petazzoni). Example below.
30 ASL+ Optimizing Compiler version 20170119-32
31 ASL+ Optimizing Compiler version 20170119-64
34 ASL+ Optimizing Compiler version 20170119
36 ----------------------------------------
37 22 December 2016. Summary of changes for version 20161222:
40 1) ACPICA kernel-resident subsystem:
42 AML Debugger: Implemented a new mechanism to simplify and enhance
43 debugger integration into all environments, including kernel debuggers
44 and user-space utilities, as well as remote debug services. This
45 mechanism essentially consists of new OSL interfaces to support debugger
46 initialization/termination, as well as wait/notify interfaces to perform
47 the debugger handshake with the host. Lv Zheng.
50 AcpiOsInitializeDebugger (void)
51 AcpiOsTerminateDebugger (void)
52 AcpiOsWaitCommandReady (void)
53 AcpiOsNotifyCommandComplete (void)
55 New OS services layer:
56 osgendbg.c -- Example implementation, and used for AcpiExec
58 Update for Generic Address Space (GAS) support: Although the AccessWidth
59 and/or BitOffset fields of the GAS are not often used, this change now
60 fully supports these fields. This affects the internal support for FADT
61 registers, registers in other ACPI data tables, and the AcpiRead and
62 AcpiWrite public interfaces. Lv Zheng.
64 Sleep support: In order to simplify integration of ACPI sleep for the
65 various host operating systems, a new OSL interface has been introduced.
66 AcpiOsEnterSleep allows the host to perform any required operations
67 before the final write to the sleep control register(s) is performed by
71 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
73 Called from these internal interfaces:
77 EFI support: Added a very small EFI/ACPICA example application. Provides
78 a simple demo for EFI integration, as well as assisting with resolution
79 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
81 source/tools/efihello/efihello.c
83 Local C library: Implemented several new functions to enhance ACPICA
84 portability, for environments where these clib functions are not
85 available (such as EFI). Lv Zheng:
92 Fixed a regression where occasionally a valid resource descriptor was
93 incorrectly detected as invalid at runtime, and a
94 AE_AML_NO_RESOURCE_END_TAG was returned.
96 Fixed a problem with the recently implemented support that enables
97 control method invocations as Target operands to many ASL operators.
98 Warnings of this form: "Needed type [Reference], found [Processor]" were
99 seen at runtime for some method invocations.
101 Example Code and Data Size: These are the sizes for the OS-independent
102 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
103 debug version of the code includes the debug output trace mechanism and
104 has a much larger code and data size.
107 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
108 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
110 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
111 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
114 2) iASL Compiler/Disassembler and Tools:
116 Disassembler: Enhanced output by adding the capability to detect and
117 disassemble ASL Switch/Case statements back to the original ASL source
118 code instead of if/else blocks. David Box.
120 AcpiHelp: Split a large file into separate files based upon
121 functionality/purpose. New files are:
125 ----------------------------------------
126 17 November 2016. Summary of changes for version 20161117:
129 1) ACPICA kernel-resident subsystem:
131 Table Manager: Fixed a regression introduced in 20160729, "FADT support
132 cleanup". This was an attempt to remove all references in the source to
133 the FADT version 2, which never was a legal version number. It was
134 skipped because it was an early version of 64-bit support that was
135 eventually abandoned for the current 64-bit support.
137 Interpreter: Fixed a problem where runtime implicit conversion was
138 incorrectly disabled for the ASL operators below. This brings the
139 behavior into compliance with the ACPI specification:
147 Table Manager: Added a new public interface, AcpiPutTable, used to
148 release and free an ACPI table returned by AcpiGetTable and related
149 interfaces. Lv Zheng.
151 Example Code and Data Size: These are the sizes for the OS-independent
152 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
153 debug version of the code includes the debug output trace mechanism and
154 has a much larger code and data size.
157 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
158 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
160 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
161 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
164 2) iASL Compiler/Disassembler and Tools:
166 Disassembler: Fixed a regression for disassembly of Resource Template.
167 Detection of templates in the AML stream missed some types of templates.
169 iASL: Fixed a problem where an Access Size error was returned for the PCC
170 address space when the AccessSize of the GAS register is greater than a
173 iASL: Implemented several grammar changes for the operators below. These
174 changes are slated for the next version of the ACPI specification:
175 RefOf - Disallow method invocation as an operand
176 CondRefOf - Disallow method invocation as an operand
177 DerefOf - Disallow operands that use the result from operators
179 do not return a reference (Changed TermArg to
182 iASL: Control method invocations are now allowed for Target operands, as
183 per the ACPI specification. Removed error for using a control method
184 invocation as a Target operand.
186 Disassembler: Improved detection of Resource Templates, Unicode, and
187 Strings within Buffer objects. These subtypes do not contain a specific
188 opcode to indicate the originating ASL code, and they must be detected by
189 other means within the disassembler.
191 iASL: Implemented an optimization improvement for 32-bit ACPI tables
192 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
193 only after 64-bit to 32-bit truncation. A truncation warning message is
194 still emitted, however.
196 AcpiXtract: Implemented handling for both types of line terminators (LF
197 or CR/LF) so that it can accept AcpiDump output files from any system.
200 AcpiBin: Added two new options for comparing AML files:
201 -a: compare and display ALL mismatches
202 -o: start compare at this offset into the second file
204 ----------------------------------------
205 30 September 2016. Summary of changes for version 20160930:
208 1) ACPICA kernel-resident subsystem:
210 Fixed a regression in the internal AcpiTbFindTable function where a non
211 AE_OK exception could inadvertently be returned even if the function did
212 not fail. This problem affects the following operators:
216 Fixed a regression in the LoadTable operator where a load to any
217 namespace location other than the root no longer worked properly.
219 Increased the maximum loop count value that will result in the
220 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
221 prevent infinite loops within the AML interpreter and thus the host OS
222 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
225 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
226 acpixf.h file. This allows hosts to easily configure the maximum loop
229 Removed an illegal character in the strtoul64.c file. This character
230 caused errors with some C compilers.
232 Example Code and Data Size: These are the sizes for the OS-independent
233 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
234 debug version of the code includes the debug output trace mechanism and
235 has a much larger code and data size.
238 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
239 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
241 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
242 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
245 2) iASL Compiler/Disassembler and Tools:
247 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
248 the simpler ASL ElseIf keyword. During the conversion, a trailing If
249 block could be lost and missing from the disassembled output.
251 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
252 the missing rule caused a parse error when using the Index operator as an
253 operand to ObjectType. This construct now compiles properly. Example:
256 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
257 option). Previously, unresolved symbols could cause a protection fault.
258 Such symbols are now marked as unresolved in the map file.
260 iASL: Implemented support to allow control method invocations as an
261 operand to the ASL DeRefOf operator. Example:
262 DeRefOf(MTH1(Local0))
264 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
265 possible _PLD buffer now includes examination of both the normal buffer
266 length (16 or 20) as well as the surrounding AML package length.
268 Disassembler: Fixed a problem with the decoding of complex expressions
269 within the Divide operator for ASL+. For the case where both the quotient
270 and remainder targets are specified, the entire statement cannot be
271 disassembled. Previously, the output incorrectly contained a mix of ASL-
272 and ASL+ operators. This mixed statement causes a syntax error when
274 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
276 Divide (INT1 + 6, 128, RSLT, QUOT)
278 iASL/Tools: Added support to process AML and non-AML ACPI tables
279 consistently. For the disassembler and AcpiExec, allow all types of ACPI
280 tables (AML and data tables). For the iASL -e option, allow only AML
283 ----------------------------------------
284 31 August 2016. Summary of changes for version 20160831:
287 1) ACPICA kernel-resident subsystem:
289 Improve support for the so-called "module-level code", which is defined
290 to be math, logical and control AML opcodes that appear outside of any
291 control method. This change improves the support by adding more opcodes
292 that can be executed in the manner. Some other issues have been solved,
293 and the ASL grammar changes to support such code under all scope
294 operators (Device, etc.) are complete. Lv Zheng.
296 UEFI support: these OSL functions have been implemented. This is an
297 additional step toward supporting the AcpiExec utility natively (with
298 full hardware access) under UEFI. Marcelo Ferreira.
299 AcpiOsReadPciConfiguration
300 AcpiOsWritePciConfiguration
302 Fixed a possible mutex error during control method auto-serialization. Lv
305 Updated support for the Generic Address Structure by fully implementing
306 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
309 Updated the return value for the internal _OSI method. Instead of
310 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
311 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
312 implementations, and will be reflected and clarified in the next version
313 of the ACPI specification.
315 Implemented two new table events that can be passed to an ACPICA table
316 handler. These events are used to indicate a table installation or
317 uninstallation. These events are used in addition to existed table load
318 and unload events. Lv Zheng.
320 Implemented a cleanup for all internal string-to-integer conversions.
321 Consolidate multiple versions of this functionality and limit possible
322 bases to either 10 or 16 to simplify the code. Adds a new file,
325 Cleanup the inclusion order of the various compiler-specific headers.
326 This simplifies build configuration management. The compiler-specific
327 headers are now split out from the host-specific headers. Lv Zheng.
329 Example Code and Data Size: These are the sizes for the OS-independent
330 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
331 debug version of the code includes the debug output trace mechanism and
332 has a much larger code and data size.
335 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
336 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
339 2) iASL Compiler/Disassembler and Tools:
341 iASL/AcpiExec: Added a command line option to display the build date/time
342 of the tool (-vd). This can be useful to verify that the correct version
343 of the tools are being used.
345 AML Debugger: Implemented a new subcommand ("execute predef") to execute
346 all predefined control methods and names within the current namespace.
347 This can be useful for debugging problems with ACPI tables and the ACPI
350 ----------------------------------------
351 29 July 2016. Summary of changes for version 20160729:
354 1) ACPICA kernel-resident subsystem:
356 Implemented basic UEFI support for the various ACPICA tools. This
358 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
359 2) Support to obtain the ACPI tables on UEFI.
360 3) Local implementation of required C library functions not available on
362 4) A front-end (main) function for the tools for UEFI-related
365 The initial deployment of this support is the AcpiDump utility executing
366 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
367 Current environments supported are Linux/Unix. MSVC generation is not
368 supported at this time. See the generate/efi/README file for build
369 instructions. Lv Zheng.
371 Future plans include porting the AcpiExec utility to execute natively on
372 the platform with I/O and memory access. This will allow viewing/dump of
373 the platform namespace and native execution of ACPI control methods that
374 access the actual hardware. To fully implement this support, the OSL
375 functions below must be implemented with UEFI interfaces. Any community
376 help in the implementation of these functions would be appreciated:
381 AcpiOsReadPciConfiguration
382 AcpiOsWritePciConfiguration
384 Restructured and standardized the C library configuration for ACPICA,
385 resulting in the various configuration options below. This includes a
386 global restructuring of the compiler-dependent and platform-dependent
387 include files. These changes may affect the existing platform-dependent
388 configuration files on some hosts. Lv Zheng.
390 The current C library configuration options appear below. For any issues,
391 it may be helpful to examine the existing compiler-dependent and
392 platform-dependent files as examples. Lv Zheng.
395 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
397 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
398 2) Unix/Windows/BSD applications:
399 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
401 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
402 3) UEFI applications:
403 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
405 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
406 4) UEFI applications (EDK2/StdLib):
407 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
408 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
411 AML interpreter: "module-level code" support. Allows for execution of so-
412 called "executable" AML code (math/logical operations, etc.) outside of
413 control methods not just at the module level (top level) but also within
414 any scope declared outside of a control method - Scope{}, Device{},
415 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
417 Simplified the configuration of the "maximum AML loops" global option by
418 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
422 Example Code and Data Size: These are the sizes for the OS-independent
423 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
424 debug version of the code includes the debug output trace mechanism and
425 has a much larger code and data size.
428 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
429 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
432 2) iASL Compiler/Disassembler and Tools:
434 iASL: Add full support for the RASF ACPI table (RAS Features Table).
435 Includes disassembler, data table compiler, and header support.
437 iASL Expand "module-level code" support. Allows for
438 compilation/disassembly of so-called "executable" AML code (math/logical
439 operations, etc.) outside of control methods not just at the module level
440 (top level) but also within any scope declared outside of a control
441 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
444 AcpiDump: Added support for dumping all SSDTs on newer versions of
445 Windows. These tables are now easily available -- SSDTs are not available
446 through the registry on older versions.
448 ----------------------------------------
449 27 May 2016. Summary of changes for version 20160527:
452 1) ACPICA kernel-resident subsystem:
454 Temporarily reverted the new arbitrary bit length/alignment support in
455 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
456 a number of regressions with the new code that need to be fully resolved
457 and tested before this support can be finally integrated into ACPICA.
458 Apologies for any inconveniences these issues may have caused.
460 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
461 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
462 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
464 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
465 option. Adds a new return macro, return_STR. Junk-uk Kim.
467 Example Code and Data Size: These are the sizes for the OS-independent
468 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
469 debug version of the code includes the debug output trace mechanism and
470 has a much larger code and data size.
473 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
474 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
476 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
477 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
479 ----------------------------------------
480 22 April 2016. Summary of changes for version 20160422:
482 1) ACPICA kernel-resident subsystem:
484 Fixed a regression in the GAS (generic address structure) arbitrary bit
485 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
486 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
488 ACPI 6.0: Added support for new/renamed resource macros. One new argument
489 was added to each of these macros, and the original name has been
490 deprecated. The AML disassembler will always disassemble to the new
491 names. Support for the new macros was added to iASL, disassembler,
492 resource manager, and the acpihelp utility. ACPICA BZ 1274.
494 I2cSerialBus -> I2cSerialBusV2
495 SpiSerialBus -> SpiSerialBusV2
496 UartSerialBus -> UartSerialBusV2
498 ACPI 6.0: Added support for a new integer field that was appended to the
499 package object returned by the _BIX method. This adds iASL compile-time
500 and AML runtime error checking. ACPICA BZ 1273.
502 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
503 Subspace Type2" (Headers, Disassembler, and data table compiler).
505 Example Code and Data Size: These are the sizes for the OS-independent
506 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
507 debug version of the code includes the debug output trace mechanism and
508 has a much larger code and data size.
511 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
512 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
514 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
515 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
518 2) iASL Compiler/Disassembler and Tools:
520 iASL: Implemented an ASL grammar extension to allow/enable executable
521 "module-level code" to be created and executed under the various
522 operators that create new scopes. This type of AML code is already
523 supported in all known AML interpreters, and the grammar change will
524 appear in the next version of the ACPI specification. Simplifies the
525 conditional runtime creation of named objects under these object types:
533 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
534 ease-of-use to the ASL language. The syntax is similar to the
535 corresponding C operator, and is implemented with the existing AML While
536 opcode -- thus requiring no changes to existing AML interpreters.
538 For (Initialize, Predicate, Update) {TermList}
543 Initializer // Nothing | TermArg => ComputationalData
544 Predicate // Nothing | TermArg => ComputationalData
545 Update // Nothing | TermArg => ComputationalData
549 iASL: The _HID/_ADR detection and validation has been enhanced to search
550 under conditionals in order to allow these objects to be conditionally
553 iASL: Fixed several issues with the constant folding feature. The
554 improvement allows better detection and resolution of statements that can
555 be folded at compile time. ACPICA BZ 1266.
557 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
558 conversion to the ASL ElseIf operator where incorrect ASL code could be
561 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
562 sometimes an extra (and extraneous) set of parentheses were emitted for
563 some combinations of operators. Although this did not cause any problems
564 with recompilation of the disassembled code, it made the code more
565 difficult to read. David Box. ACPICA BZ 1231.
567 iASL: Changed to ignore the unreferenced detection for predefined names
568 of resource descriptor elements, when the resource descriptor is
569 created/defined within a control method.
571 iASL: Disassembler: Fix a possible fault with externally declared Buffer
574 ----------------------------------------
575 18 March 2016. Summary of changes for version 20160318:
577 1) ACPICA kernel-resident subsystem:
579 Added support for arbitrary bit lengths and bit offsets for registers
580 defined by the Generic Address Structure. Previously, only aligned bit
581 lengths of 8/16/32/64 were supported. This was sufficient for many years,
582 but recently some machines have been seen that require arbitrary bit-
583 level support. ACPICA BZ 1240. Lv Zheng.
585 Fixed an issue where the \_SB._INI method sometimes must be evaluated
586 before any _REG methods are evaluated. Lv Zheng.
588 Implemented several changes related to ACPI table support
589 (Headers/Disassembler/TableCompiler):
590 NFIT: For ACPI 6.1, updated to add some additional new fields and
592 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
594 DMAR: Added new constants per the 10/2014 DMAR spec.
595 IORT: Added new subtable per the 10/2015 IORT spec.
596 HEST: For ACPI 6.1, added new constants and new subtable.
597 DBG2: Added new constants per the 12/2015 DBG2 spec.
598 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
600 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
602 Updated header support for the DMAR table to match the current version of
605 Added extensions to the ASL Concatenate operator to allow any ACPI object
606 to be passed as an operand. Any object other than Integer/String/Buffer
607 simply returns a string containing the object type. This extends the
608 usefulness of the Printf macros. Previously, Concatenate would abort the
609 control method if a non-data object was encountered.
611 ACPICA source code: Deployed the C "const" keyword across the source code
612 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
614 Example Code and Data Size: These are the sizes for the OS-independent
615 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
616 debug version of the code includes the debug output trace mechanism and
617 has a much larger code and data size.
620 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
621 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
623 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
624 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
627 2) iASL Compiler/Disassembler and Tools:
629 iASL/Disassembler: Improved the heuristic used to determine the number of
630 arguments for an externally defined control method (a method in another
631 table). Although this is an improvement, there is no deterministic way to
632 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
633 will completely solve this problem as it is deployed (automatically) in
636 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
637 statements that could cause errors when the disassembled file is
638 compiled. ACPICA BZ 1243. David Box.
640 iASL: Fixed a regression caused by the merger of the two versions of the
641 local strtoul64. Because of a dependency on a global variable, strtoul64
642 could return an error for integers greater than a 32-bit value. ACPICA BZ
645 iASL: Fixed a regression where a fault could occur for an ASL Return
646 statement if it invokes a control method that is not resolved. ACPICA BZ
649 AcpiXtract: Improved input file validation: detection of binary files and
650 non-acpidump text files.
652 ----------------------------------------
653 12 February 2016. Summary of changes for version 20160212:
655 1) ACPICA kernel-resident subsystem:
657 Implemented full support for the ACPI 6.1 specification (released in
658 January). This version of the specification is available at:
659 http://www.uefi.org/specifications
661 Only a relatively small number of changes were required in ACPICA to
662 support ACPI 6.1, in these areas:
663 - New predefined names
665 - A new subtable for HEST
666 - A few other header changes for new values
668 Ensure \_SB_._INI is executed before any _REG methods are executed. There
669 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
671 Reverted a change made in version 20151218 which enabled method
672 invocations to be targets of various ASL operators (SuperName and Target
673 grammar elements). While the new behavior is supported by the ACPI
674 specification, other AML interpreters do not support this behavior and
675 never will. The ACPI specification will be updated for ACPI 6.2 to remove
676 this support. Therefore, the change was reverted to the original ACPICA
679 ACPICA now supports the GCC 6 compiler.
681 Current Release: (Note: build changes increased sizes)
682 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
683 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
685 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
686 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
689 2) iASL Compiler/Disassembler and Tools:
691 Completed full support for the ACPI 6.0 External() AML opcode. The
692 compiler emits an external AML opcode for each ASL External statement.
693 This opcode is used by the disassembler to assist with the disassembly of
694 external control methods by specifying the required number of arguments
695 for the method. AML interpreters do not use this opcode. To ensure that
696 interpreters do not even see the opcode, a block of one or more external
697 opcodes is surrounded by an "If(0)" construct. As this feature becomes
698 commonly deployed in BIOS code, the ability of disassemblers to correctly
699 disassemble AML code will be greatly improved. David Box.
701 iASL: Implemented support for an optional cross-reference output file.
702 The -lx option will create a the cross-reference file with the suffix
703 "xrf". Three different types of cross-reference are created in this file:
704 - List of object references made from within each control method
705 - Invocation (caller) list for each user-defined control method
706 - List of references to each non-method object in the namespace
708 iASL: Method invocations as ASL Target operands are now disallowed and
709 flagged as errors in preparation for ACPI 6.2 (see the description of the
712 ----------------------------------------
713 8 January 2016. Summary of changes for version 20160108:
715 1) ACPICA kernel-resident subsystem:
717 Updated all ACPICA copyrights and signons to 2016: Added the 2016
718 copyright to all source code module headers and utility/tool signons.
719 This includes the standard Linux dual-license header. This affects
720 virtually every file in the ACPICA core subsystem, iASL compiler, all
721 ACPICA utilities, and the ACPICA test suite.
723 Fixed a regression introduced in version 20151218 concerning the
724 execution of so-called module-level ASL/AML code. Namespace objects
725 created under a module-level If() construct were not properly/fully
726 entered into the namespace and could cause an interpreter fault when
729 Example Code and Data Size: These are the sizes for the OS-independent
730 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
731 debug version of the code includes the debug output trace mechanism and
732 has a much larger code and data size.
735 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
736 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
738 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
739 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
742 2) iASL Compiler/Disassembler and Tools:
744 Fixed a problem with the compilation of the GpioIo and GpioInt resource
745 descriptors. The _PIN field name was incorrectly defined to be an array
746 of 32-bit values, but the _PIN values are in fact 16 bits each. This
747 would cause incorrect bit width warnings when using Word (16-bit) fields
748 to access the descriptors.
751 ----------------------------------------
752 18 December 2015. Summary of changes for version 20151218:
754 1) ACPICA kernel-resident subsystem:
756 Implemented per-AML-table execution of "module-level code" as individual
757 ACPI tables are loaded into the namespace during ACPICA initialization.
758 In other words, any module-level code within an AML table is executed
759 immediately after the table is loaded, instead of batched and executed
760 after all of the tables have been loaded. This provides compatibility
761 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
764 To fully support the feature above, the default operation region handlers
765 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
766 installed before any ACPI tables are loaded. This enables module-level
767 code to access these address spaces during the table load and module-
768 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
771 Implemented several changes to the internal _REG support in conjunction
772 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
773 utilities for the changes above. Although these tools were changed, host
774 operating systems that simply use the default handlers for SystemMemory,
775 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
777 For example, in the code below, DEV1 is conditionally added to the
778 namespace by the DSDT via module-level code that accesses an operation
779 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
780 created immediately after the DSDT is loaded in order for the SSDT to
781 successfully reference DEV1. Previously, this code would cause an
782 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
783 fully supported by ACPICA.
785 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
787 OperationRegion (OPR1, SystemMemory, 0x400, 32)
788 Field (OPR1, AnyAcc, NoLock, Preserve)
799 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
801 External (\DEV1, DeviceObj)
807 Fixed an AML interpreter problem where control method invocations were
808 not handled correctly when the invocation was itself a SuperName argument
809 to another ASL operator. In these cases, the method was not invoked.
810 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
818 Signal, Release, Reset
821 Implemented automatic String-to-ObjectReference conversion support for
822 packages returned by predefined names (such as _DEP). A common BIOS error
823 is to add double quotes around an ObjectReference namepath, which turns
824 the reference into an unexpected string object. This support detects the
825 problem and corrects it before the package is returned to the caller that
826 invoked the method. Lv Zheng.
828 Implemented extensions to the Concatenate operator. Concatenate now
829 accepts any type of object, it is not restricted to simply
830 Integer/String/Buffer. For objects other than these 3 basic data types,
831 the argument is treated as a string containing the name of the object
832 type. This expands the utility of Concatenate and the Printf/Fprintf
833 macros. ACPICA BZ 1222.
835 Cleaned up the output of the ASL Debug object. The timer() value is now
836 optional and no longer emitted by default. Also, the basic data types of
837 Integer/String/Buffer are simply emitted as their values, without a data
838 type string -- since the data type is obvious from the output. ACPICA BZ
841 Example Code and Data Size: These are the sizes for the OS-independent
842 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
843 debug version of the code includes the debug output trace mechanism and
844 has a much larger code and data size.
847 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
848 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
850 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
851 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
854 2) iASL Compiler/Disassembler and Tools:
856 iASL: Fixed some issues with the ASL Include() operator. This operator
857 was incorrectly defined in the iASL parser rules, causing a new scope to
858 be opened for the code within the include file. This could lead to
859 several issues, including allowing ASL code that is technically illegal
860 and not supported by AML interpreters. Note, this does not affect the
861 related #include preprocessor operator. ACPICA BZ 1212.
863 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
864 operator is essentially an ASL macro since there is no AML opcode
865 associated with it. The code emitted by the iASL compiler for ElseIf is
866 an Else opcode followed immediately by an If opcode. The disassembler
867 will now emit an ElseIf if it finds an Else immediately followed by an
868 If. This simplifies the decoded ASL, especially for deeply nested
869 If..Else and large Switch constructs. Thus, the disassembled code more
870 closely follows the original source ASL. ACPICA BZ 1211. Example:
882 ElseIf (Arg0 == 0x02)
887 AcpiExec: Added support for the new module level code behavior and the
888 early region installation. This required a small change to the
889 initialization, since AcpiExec must install its own operation region
892 AcpiExec: Added support to make the debug object timer optional. Default
893 is timer disabled. This cleans up the debug object output -- the timer
896 AcpiExec: Multiple ACPI tables are now loaded in the order that they
897 appear on the command line. This can be important when there are
898 interdependencies/references between the tables.
900 iASL/Templates. Add support to generate template files with multiple
901 SSDTs within a single output file. Also added ommand line support to
902 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
906 ----------------------------------------
907 24 November 2015. Summary of changes for version 20151124:
909 1) ACPICA kernel-resident subsystem:
911 Fixed a possible regression for a previous update to FADT handling. The
912 FADT no longer has a fixed table ID, causing some issues with code that
913 was hardwired to a specific ID. Lv Zheng.
915 Fixed a problem where the method auto-serialization could interfere with
916 the current SyncLevel. This change makes the auto-serialization support
917 transparent to the SyncLevel support and management.
919 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
920 interface is intended for early access to the namespace during the
921 initial namespace device discovery walk. The _SUB method has been seen to
922 access operation regions in some cases, causing errors because the
923 operation regions are not fully initialized.
925 AML Debugger: Fixed some issues with the terminate/quit/exit commands
926 that can cause faults. Lv Zheng.
928 AML Debugger: Add thread ID support so that single-step mode only applies
929 to the AML Debugger thread. This prevents runtime errors within some
932 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
933 methods that are invoked by this interface are optional, removed warnings
934 emitted for the case where one or more of these methods do not exist.
935 ACPICA BZ 1208, original change by Prarit Bhargava.
937 Made a major pass through the entire ACPICA source code base to
938 standardize formatting that has diverged a bit over time. There are no
939 functional changes, but this will of course cause quite a few code
940 differences from the previous ACPICA release.
942 Example Code and Data Size: These are the sizes for the OS-independent
943 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
944 debug version of the code includes the debug output trace mechanism and
945 has a much larger code and data size.
948 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
949 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
951 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
952 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
955 2) iASL Compiler/Disassembler and Tools:
957 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
958 definition blocks within a single ASL file and the resulting AML file.
959 Support for this type of file was also added to the various tools that
960 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
961 example code below shows two definition blocks within the same file:
963 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
967 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
971 iASL: Enhanced typechecking for the Name() operator. All expressions for
972 the value of the named object must be reduced/folded to a single constant
973 at compile time, as per the ACPI specification (the AML definition of
976 iASL: Fixed some code indentation issues for the -ic and -ia options (C
977 and assembly headers). Now all emitted code correctly begins in column 1.
979 iASL: Added an error message for an attempt to open a Scope() on an
980 object defined in an SSDT. The DSDT is always loaded into the namespace
981 first, so any attempt to open a Scope on an SSDT object will fail at
985 ----------------------------------------
986 30 September 2015. Summary of changes for version 20150930:
988 1) ACPICA kernel-resident subsystem:
990 Debugger: Implemented several changes and bug fixes to assist support for
991 the in-kernel version of the AML debugger. Lv Zheng.
992 - Fix the "predefined" command for in-kernel debugger.
993 - Do not enter debug command loop for the help and version commands.
994 - Disallow "execute" command during execution/single-step of a method.
996 Interpreter: Updated runtime typechecking for all operators that have
997 target operands. The operand is resolved and validated that it is legal.
998 For example, the target cannot be a non-data object such as a Device,
999 Mutex, ThermalZone, etc., as per the ACPI specification.
1001 Debugger: Fixed the double-mutex user I/O handshake to work when local
1002 deadlock detection is enabled.
1004 Debugger: limited display of method locals and arguments (LocalX and
1005 ArgX) to only those that have actually been initialized. This prevents
1006 lines of extraneous output.
1008 Updated the definition of the NFIT table to correct the bit polarity of
1009 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1011 Example Code and Data Size: These are the sizes for the OS-independent
1012 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1013 debug version of the code includes the debug output trace mechanism and
1014 has a much larger code and data size.
1017 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1018 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1020 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1021 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1024 2) iASL Compiler/Disassembler and Tools:
1026 iASL: Improved the compile-time typechecking for operands of many of the
1029 -- Added an option to disable compiler operand/operator typechecking (-
1032 -- For the following operators, the TermArg operands are now validated
1033 when possible to be Integer data objects: BankField, OperationRegion,
1034 DataTableRegion, Buffer, and Package.
1036 -- Store (Source, Target): Both the source and target operands are
1037 resolved and checked that the operands are both legal. For example,
1038 neither operand can be a non-data object such as a Device, Mutex,
1039 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1040 operator can be used to store an object to any type of target object.
1042 -- Store (Source, Target): If the source is a Package object, the target
1043 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1044 is a Package, the source must also be a Package.
1046 -- Store (Source, Target): A warning is issued if the source and target
1047 resolve to the identical named object.
1049 -- Store (Source, <method invocation>): An error is generated for the
1050 target method invocation, as this construct is not supported by the AML
1053 -- For all ASL math and logic operators, the target operand must be a
1054 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1055 includes the function return value also.
1057 -- External declarations are also included in the typechecking where
1058 possible. External objects defined using the UnknownObj keyword cannot be
1059 typechecked, however.
1061 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1063 - Legacy code: Index(PKG1, 3)
1064 - New ASL+ code: PKG1[3]
1065 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1068 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1069 spaces were inadvertently appended to the filename, causing file access
1070 and deletion problems on some systems.
1072 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1073 possible compiler output files when building the test suite -- thus
1074 exercising these features of the compiler. These files are automatically
1075 deleted when the test suite exits.
1078 ----------------------------------------
1079 18 August 2015. Summary of changes for version 20150818:
1081 1) ACPICA kernel-resident subsystem:
1083 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1084 Zheng. ACPICA BZ 1186.
1086 Completed development to ensure that the ACPICA Disassembler and Debugger
1087 are fully standalone components of ACPICA. Removed cross-component
1088 dependences. Lv Zheng.
1090 The max-number-of-AML-loops is now runtime configurable (previously was
1091 compile-time only). This is essentially a loop timeout to force-abort
1092 infinite AML loops. ACPCIA BZ 1192.
1094 Debugger: Cleanup output to dump ACPI names and namepaths without any
1095 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1097 Removed unnecessary conditional compilations across the Debugger and
1098 Disassembler components where entire modules could be left uncompiled.
1100 The aapits test is deprecated and has been removed from the ACPICA git
1101 tree. The test has never been completed and has not been maintained, thus
1102 becoming rather useless. ACPICA BZ 1015, 794.
1104 A batch of small changes to close bugzilla and other reports:
1105 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1106 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1107 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1108 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1110 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1112 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1114 - Debugger: Split debugger initialization/termination interfaces. Lv
1116 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1118 - AcpiExec: Add debug message during _REG method phase during table
1120 - AcpiNames: Fix a regression where some output was missing and no longer
1122 - Debugger: General cleanup and simplification. Lv Zheng.
1123 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1125 Example Code and Data Size: These are the sizes for the OS-independent
1126 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1127 debug version of the code includes the debug output trace mechanism and
1128 has a much larger code and data size.
1131 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1132 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1134 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1135 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1138 2) iASL Compiler/Disassembler and Tools:
1140 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1141 were not handled properly and caused load errors. Now, properly invoke
1142 and use the ACPICA auto-reallocate mechanism for ACPI table data
1143 structures. ACPICA BZ 1188
1145 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1148 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1149 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1150 executed during initialization. ACPICA BZ 1187, 1189.
1152 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1153 that corresponds to each disassembled ASL statement, to simplify
1154 debugging. ACPICA BZ 1191.
1156 Debugger: Add option to the "objects" command to display a summary of the
1157 current namespace objects (Object type and count). This is displayed if
1158 the command is entered with no arguments.
1160 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1163 ----------------------------------------
1164 17 July 2015. Summary of changes for version 20150717:
1166 1) ACPICA kernel-resident subsystem:
1168 Improved the partitioning between the Debugger and Disassembler
1169 components. This allows the Debugger to be used standalone within kernel
1170 code without the Disassembler (which is used for single stepping also).
1171 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1173 Debugger: Implemented a new command to trace the execution of control
1174 methods (Trace). This is especially useful for the in-kernel version of
1175 the debugger when file I/O may not be available for method trace output.
1176 See the ACPICA reference for more information. Lv Zheng.
1178 Moved all C library prototypes (used for the local versions of these
1179 functions when requested) to a new header, acclib.h
1180 Cleaned up the use of non-ANSI C library functions. These functions are
1181 implemented locally in ACPICA. Moved all such functions to a common
1182 source file, utnonansi.c
1184 Debugger: Fixed a problem with the "!!" command (get last command
1185 executed) where the debugger could enter an infinite loop and eventually
1188 Removed the use of local macros that were used for some of the standard C
1189 library functions to automatically cast input parameters. This mostly
1190 affected the is* functions where the input parameter is defined to be an
1191 int. This required a few modifications to the main ACPICA source code to
1192 provide casting for these functions and eliminate possible compiler
1193 warnings for these parameters.
1195 Across the source code, added additional status/error checking to resolve
1196 issues discovered by static source code analysis tools such as Coverity.
1198 Example Code and Data Size: These are the sizes for the OS-independent
1199 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1200 debug version of the code includes the debug output trace mechanism and
1201 has a much larger code and data size.
1204 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1205 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1207 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1208 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1211 2) iASL Compiler/Disassembler and Tools:
1213 iASL: Fixed a regression where the device map file feature no longer
1214 worked properly when used in conjunction with the disassembler. It only
1215 worked properly with the compiler itself.
1217 iASL: Implemented a new warning for method LocalX variables that are set
1218 but never used (similar to a C compiler such as gcc). This also applies
1219 to ArgX variables that are not defined by the parent method, and are
1220 instead (legally) used as local variables.
1222 iASL/Preprocessor: Finished the pass-through of line numbers from the
1223 preprocessor to the compiler. This ensures that compiler errors/warnings
1224 have the correct original line numbers and filenames, regardless of any
1227 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1228 pass-through of comments to the preprocessor output file (which becomes
1229 the compiler input file). Also fixed a problem with // comments that
1230 appear after a math expression.
1232 iASL: Added support for the TCPA server table to the table compiler and
1233 template generator. (The client table was already previously supported)
1235 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1236 identify the iASL compiler.
1238 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1239 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1242 AcpiHelp: Update to expand help messages for the iASL preprocessor
1246 ----------------------------------------
1247 19 June 2015. Summary of changes for version 20150619:
1249 Two regressions in version 20150616 have been addressed:
1251 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1252 etc.) This update changes ACPICA to only use the standard headers for
1253 functions, or the prototypes for the local versions of the C library
1254 functions. Across the source code, this required some additional casts
1255 for some Clib invocations for portability. Moved all local prototypes to
1256 a new file, acclib.h
1258 Fixes several problems with recent changes to the handling of the FACS
1259 table that could cause some systems not to boot.
1262 ----------------------------------------
1263 16 June 2015. Summary of changes for version 20150616:
1266 1) ACPICA kernel-resident subsystem:
1268 Across the entire ACPICA source code base, the various macros for the C
1269 library functions (such as ACPI_STRLEN, etc.) have been removed and
1270 replaced by the standard C library names (strlen, etc.) The original
1271 purpose for these macros is no longer applicable. This simplification
1272 reduces the number of macros used in the ACPICA source code
1273 significantly, improving readability and maintainability.
1275 Implemented support for a new ACPI table, the OSDT. This table, the
1276 "override" SDT, can be loaded directly by the host OS at boot time. It
1277 enables the replacement of existing namespace objects that were installed
1278 via the DSDT and/or SSDTs. The primary purpose for this is to replace
1279 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
1280 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
1283 Added support for systems with (improperly) two FACS tables -- a "32-bit"
1284 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
1285 X field). This change will support both automatically. There continues to
1286 be systems found with this issue. This support requires a change to the
1287 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
1288 been added to allow the host to select which FACS is desired
1289 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
1292 Added a new feature to allow for systems that do not contain an FACS.
1293 Although this is already supported on hardware-reduced platforms, the
1294 feature has been extended for all platforms. The reasoning is that we do
1295 not want to abort the entire ACPICA initialization just because the
1296 system is seriously buggy and has no FACS.
1298 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
1299 not correctly transcribed from the ACPI specification in ACPICA version
1302 Implemented support for the _CLS object in the AcpiGetObjectInfo external
1305 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
1306 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
1307 compiler also updated. Note: The TCPA "server" table is not supported by
1308 the disassembler/table-compiler at this time.
1310 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
1312 Example Code and Data Size: These are the sizes for the OS-independent
1313 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1314 debug version of the code includes the debug output trace mechanism and
1315 has a much larger code and data size.
1318 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1319 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1321 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1322 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1325 2) iASL Compiler/Disassembler and Tools:
1327 Disassembler: Fixed a problem with the new symbolic operator disassembler
1328 where incorrect ASL code could be emitted in some cases for the "non-
1329 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
1330 ShiftRight. The actual problem cases seem to be rather unusual in common
1331 ASL code, however. David Box.
1333 Modified the linux version of acpidump to obtain ACPI tables from not
1334 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
1337 iASL: Fixed a problem where the user preprocessor output file (.i)
1338 contained extra data that was not expected. The compiler was using this
1339 file as a temporary file and passed through #line directives in order to
1340 keep compiler error messages in sync with the input file and line number
1341 across multiple include files. The (.i) is no longer a temporary file as
1342 the compiler uses a new, different file for the original purpose.
1344 iASL: Fixed a problem where comments within the original ASL source code
1345 file were not passed through to the preprocessor output file, nor any
1348 iASL: Fixed some issues for the handling of the "#include" preprocessor
1349 directive and the similar (but not the same) "Include" ASL operator.
1351 iASL: Add support for the new OSDT in both the disassembler and compiler.
1353 iASL: Fixed a problem with the constant folding support where a Buffer
1354 object could be incorrectly generated (incorrectly formed) during a
1355 conversion to a Store() operator.
1357 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
1358 description text for the _REV predefined name. _REV now permanently
1359 returns 2, as per the ACPI 6.0 specification.
1361 Debugger: Enhanced the output of the Debug ASL object for references
1362 produced by the Index operator. For Buffers and strings, only output the
1363 actual byte pointed to by the index. For packages, only print the single
1364 package element decoded by the index. Previously, the entire
1365 buffer/string/package was emitted.
1367 iASL/Table-compiler: Fixed a regression where the "generic" data types
1368 were no longer recognized, causing errors.
1371 ----------------------------------------
1372 15 May 2015. Summary of changes for version 20150515:
1374 This release implements most of ACPI 6.0 as described below.
1376 1) ACPICA kernel-resident subsystem:
1378 Implemented runtime argument checking and return value checking for all
1379 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
1380 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
1382 Example Code and Data Size: These are the sizes for the OS-independent
1383 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1384 debug version of the code includes the debug output trace mechanism and
1385 has a much larger code and data size.
1388 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1389 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1391 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1392 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1395 2) iASL Compiler/Disassembler and Tools:
1397 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
1398 names (argument count validation and return value typechecking.)
1400 iASL disassembler and table compiler: implemented support for all new
1401 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
1403 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
1406 iASL preprocessor: Added a new directive to enable inclusion of binary
1407 blobs into ASL code. The new directive is #includebuffer. It takes a
1408 binary file as input and emits a named ascii buffer object into the ASL
1411 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
1413 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
1416 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
1420 ----------------------------------------
1421 10 April 2015. Summary of changes for version 20150410:
1423 Reverted a change introduced in version 20150408 that caused
1424 a regression in the disassembler where incorrect operator
1425 symbols could be emitted.
1428 ----------------------------------------
1429 08 April 2015. Summary of changes for version 20150408:
1432 1) ACPICA kernel-resident subsystem:
1434 Permanently set the return value for the _REV predefined name. It now
1435 returns 2 (was 5). This matches other ACPI implementations. _REV will be
1436 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
1437 for ACPI 2.0 and later. It should never be used to differentiate or
1438 identify operating systems.
1440 Added the "Windows 2015" string to the _OSI support. ACPICA will now
1441 return TRUE to a query with this string.
1443 Fixed several issues with the local version of the printf function.
1445 Added the C99 compiler option (-std=c99) to the Unix makefiles.
1448 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
1449 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
1451 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1452 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1455 2) iASL Compiler/Disassembler and Tools:
1457 iASL: Implemented an enhancement to the constant folding feature to
1458 transform the parse tree to a simple Store operation whenever possible:
1459 Add (2, 3, X) ==> is converted to: Store (5, X)
1460 X = 2 + 3 ==> is converted to: Store (5, X)
1462 Updated support for the SLIC table (Software Licensing Description Table)
1463 in both the Data Table compiler and the disassembler. The SLIC table
1464 support now conforms to "Microsoft Software Licensing Tables (SLIC and
1465 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
1466 following the ACPI header is now defined to be "Proprietary Data", and as
1467 such, can only be entered or displayed as a hex data block.
1469 Implemented full support for the MSDM table as described in the document
1470 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
1471 following the ACPI header is defined to be "Proprietary Data", and can
1472 only be entered or displayed as a hex data block.
1474 Implemented the -Pn option for the iASL Table Compiler (was only
1475 implemented for the ASL compiler). This option disables the iASL
1478 Disassembler: For disassembly of Data Tables, added a comment field
1479 around the Ascii equivalent data that is emitted as part of the "Raw
1480 Table Data" block. This prevents the iASL Preprocessor from possible
1481 confusion if/when the table is compiled.
1483 Disassembler: Added an option (-df) to force the disassembler to assume
1484 that the table being disassembled contains valid AML. This feature is
1485 useful for disassembling AML files that contain ACPI signatures other
1486 than DSDT or SSDT (such as OEMx or other signatures).
1488 Changes for the EFI version of the tools:
1489 1) Fixed a build error/issue
1490 2) Fixed a cast warning
1492 iASL: Fixed a path issue with the __FILE__ operator by making the
1493 directory prefix optional within the internal SplitInputFilename
1496 Debugger: Removed some unused global variables.
1498 Tests: Updated the makefile for proper generation of the AAPITS suite.
1501 ----------------------------------------
1502 04 February 2015. Summary of changes for version 20150204:
1504 ACPICA kernel-resident subsystem:
1506 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1507 copyright to all module headers and signons, including the standard Linux
1508 header. This affects virtually every file in the ACPICA core subsystem,
1509 iASL compiler, all ACPICA utilities, and the test suites.
1511 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
1512 A raw gpe handling mechanism was created to allow better handling of GPE
1513 storms that aren't easily managed by the normal handler. The raw handler
1514 allows disabling/renabling of the the GPE so that interrupt storms can be
1515 avoided in cases where events cannot be timely serviced. In this
1516 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
1517 GPE. This API will leave the reference counts undisturbed, thereby
1518 preventing unintentional clearing of the GPE when the intent in only to
1519 temporarily disable it. Raw handlers allow enabling and disabling of a
1520 GPE by removing GPE register locking. As such, raw handlers much provide
1521 their own locks while using GPE API's to protect access to GPE data
1525 Events: Always modify GPE registers under the GPE lock.
1526 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
1527 values. Reported as bug by joe.liu@apple.com.
1529 Unix makefiles: Separate option to disable optimizations and
1530 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
1531 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
1532 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
1533 errors when building ACPICA. This allows disabling the option without
1534 also having to disable optimazations.
1538 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1539 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
1542 --------------------------------------
1543 07 November 2014. Summary of changes for version 20141107:
1545 This release is available at https://acpica.org/downloads
1547 This release introduces and implements language extensions to ASL that
1548 provide support for symbolic ("C-style") operators and expressions. These
1549 language extensions are known collectively as ASL+.
1552 1) iASL Compiler/Disassembler and Tools:
1554 Disassembler: Fixed a problem with disassembly of the UartSerialBus
1555 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
1558 Disassembler: Fixed the Unicode macro support to add escape sequences.
1559 All non-printable ASCII values are emitted as escape sequences, as well
1560 as the standard escapes for quote and backslash. Ensures that the
1561 disassembled macro can be correctly recompiled.
1563 iASL: Added Printf/Fprintf macros for formatted output. These macros are
1564 translated to existing AML Concatenate and Store operations. Printf
1565 writes to the ASL Debug object. Fprintf allows the specification of an
1566 ASL name as the target. Only a single format specifier is required, %o,
1567 since the AML interpreter dynamically converts objects to the required
1570 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1571 (Concatenate (Concatenate (Concatenate ("", Arg0),
1572 ": Unexpected value for "), Arg1), ", "), Arg2),
1573 " at line "), Arg3), Debug)
1575 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
1576 Arg0, Arg1, Arg2, Arg3)
1578 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1579 ("", Arg1), ": "), Arg0), " Successful"), STR1)
1581 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
1583 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
1584 ASL parse tree before the AML code is generated. This allows blocks of
1585 ASL code to be removed in order to help locate and identify problem
1586 devices and/or code. David E. Box.
1588 AcpiExec: Added support (-fi) for an optional namespace object
1589 initialization file. This file specifies initial values for namespace
1590 objects as necessary for debugging and testing different ASL code paths
1591 that may be taken as a result of BIOS options.
1594 2) Overview of symbolic operator support for ASL (ASL+)
1595 -------------------------------------------------------
1597 As an extension to the ASL language, iASL implements support for symbolic
1598 (C-style) operators for math and logical expressions. This can greatly
1599 simplify ASL code as well as improve both readability and
1600 maintainability. These language extensions can exist concurrently with
1601 all legacy ASL code and expressions.
1603 The symbolic extensions are 100% compatible with existing AML
1604 interpreters, since no new AML opcodes are created. To implement the
1605 extensions, the iASL compiler transforms the symbolic expressions into
1606 the legacy ASL/AML equivalents at compile time.
1608 Full symbolic expressions are supported, along with the standard C
1609 precedence and associativity rules.
1611 Full disassembler support for the symbolic expressions is provided, and
1612 creates an automatic migration path for existing ASL code to ASL+ code
1613 via the disassembly process. By default, the disassembler now emits ASL+
1614 code with symbolic expressions. An option (-dl) is provided to force the
1615 disassembler to emit legacy ASL code if desired.
1617 Below is the complete list of the currently supported symbolic operators
1618 with examples. See the iASL User Guide for additional information.
1621 ASL+ Syntax Legacy ASL Equivalent
1622 ----------- ---------------------
1626 Z = X + Y Add (X, Y, Z)
1627 Z = X - Y Subtract (X, Y, Z)
1628 Z = X * Y Multiply (X, Y, Z)
1629 Z = X / Y Divide (X, Y, , Z)
1630 Z = X % Y Mod (X, Y, Z)
1631 Z = X << Y ShiftLeft (X, Y, Z)
1632 Z = X >> Y ShiftRight (X, Y, Z)
1633 Z = X & Y And (X, Y, Z)
1634 Z = X | Y Or (X, Y, Z)
1635 Z = X ^ Y Xor (X, Y, Z)
1640 // Logical operators
1642 (X == Y) LEqual (X, Y)
1643 (X != Y) LNotEqual (X, Y)
1644 (X < Y) LLess (X, Y)
1645 (X > Y) LGreater (X, Y)
1646 (X <= Y) LLessEqual (X, Y)
1647 (X >= Y) LGreaterEqual (X, Y)
1648 (X && Y) LAnd (X, Y)
1652 // Assignment and compound assignment operations
1655 X += Y Add (X, Y, X)
1656 X -= Y Subtract (X, Y, X)
1657 X *= Y Multiply (X, Y, X)
1658 X /= Y Divide (X, Y, , X)
1659 X %= Y Mod (X, Y, X)
1660 X <<= Y ShiftLeft (X, Y, X)
1661 X >>= Y ShiftRight (X, Y, X)
1662 X &= Y And (X, Y, X)
1664 X ^= Y Xor (X, Y, X)
1671 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
1672 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
1674 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
1676 And (MEMB, 0xFFFFFFF0, SRMB)
1677 Store (MEMB, Local2)
1678 Store (PDBM, Local1)
1679 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
1681 Or (PDBM, 0x02, PDBM)
1685 If (((R510 & 0x03FB) == 0x02E0) ||
1686 ((R520 & 0x03FB) == 0x02E0) ||
1687 ((R530 & 0x03FB) == 0x02E0) ||
1688 ((R540 & 0x03FB) == 0x02E0))
1690 SRMB = (MEMB & 0xFFFFFFF0)
1693 PDBM &= 0xFFFFFFFFFFFFFFF9
1699 Store (0x1234, Local1)
1700 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
1701 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
1702 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
1703 Store (Index (PKG1, 0x03), Local6)
1704 Store (Add (Local3, Local2), Debug)
1705 Add (Local1, 0x0F, Local2)
1706 Add (Local1, Multiply (Local2, Local3), Local2)
1707 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
1711 Local3 = (((Local1 + TEST) + 0x20) * Local2)
1712 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
1713 Local3 = (Local1 + (TEST + (0x20 * Local2)))
1714 Local6 = Index (PKG1, 0x03)
1715 Debug = (Local3 + Local2)
1716 Local2 = (Local1 + 0x0F)
1717 Local2 = (Local1 + (Local2 * Local3))
1718 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
1721 ----------------------------------------
1722 26 September 2014. Summary of changes for version 20140926:
1724 1) ACPICA kernel-resident subsystem:
1726 Updated the GPIO operation region handler interface (GeneralPurposeIo).
1727 In order to support GPIO Connection objects with multiple pins, along
1728 with the related Field objects, the following changes to the interface
1729 have been made: The Address is now defined to be the offset in bits of
1730 the field unit from the previous invocation of a Connection. It can be
1731 viewed as a "Pin Number Index" into the connection resource descriptor.
1732 The BitWidth is the exact bit width of the field. It is usually one bit,
1733 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
1734 additional information and examples.
1736 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
1737 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
1738 by the firmware), so that they cannot fire until they are enabled via
1739 AcpiUpdateAllGpes. Rafael J. Wysocki.
1741 Added a new return flag for the Event/GPE status interfaces --
1742 AcpiGetEventStatus and AcpiGetGpeStatus. The new
1743 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
1744 GPE currently has a handler associated with it, and can thus actually
1745 affect the system. Lv Zheng.
1747 Example Code and Data Size: These are the sizes for the OS-independent
1748 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1749 debug version of the code includes the debug output trace mechanism and
1750 has a much larger code and data size.
1753 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1754 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1756 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1757 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1759 2) iASL Compiler/Disassembler and Tools:
1761 iASL: Fixed a memory allocation/free regression introduced in 20140828
1762 that could cause the compiler to crash. This was introduced inadvertently
1763 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
1766 iASL: Removed two error messages that have been found to create false
1767 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
1768 1) Illegal forward reference within a method
1769 2) Illegal reference across two methods
1771 iASL: Implemented a new option (-lm) to create a hardware mapping file
1772 that summarizes all GPIO, I2C, SPI, and UART connections. This option
1773 works for both the compiler and disassembler. See the iASL compiler user
1774 guide for additional information and examples (section 6.4.6).
1776 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
1777 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
1778 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
1780 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
1781 unless STDIN is actually a terminal. Assists with batch-mode processing.
1784 Disassembler/AcpiHelp: Added another large group of recognized _HID
1788 ----------------------------------------
1789 28 August 2014. Summary of changes for version 20140828:
1791 1) ACPICA kernel-resident subsystem:
1793 Fixed a problem related to the internal use of the Timer() operator where
1794 a 64-bit divide could cause an attempted link to a double-precision math
1795 library. This divide is not actually necessary, so the code was
1796 restructured to eliminate it. Lv Zheng.
1798 ACPI 5.1: Added support for the runtime validation of the _DSD package
1799 (similar to the iASL support).
1801 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
1802 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
1804 Example Code and Data Size: These are the sizes for the OS-independent
1805 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1806 debug version of the code includes the debug output trace mechanism and
1807 has a much larger code and data size.
1810 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1811 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1813 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
1814 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1816 2) iASL Compiler/Disassembler and Tools:
1818 AcpiExec: Fixed a problem on unix systems where the original terminal
1819 state was not always properly restored upon exit. Seen when using the -v
1820 option. ACPICA BZ 1104.
1822 iASL: Fixed a problem with the validation of the ranges/length within the
1823 Memory24 resource descriptor. There was a boundary condition when the
1824 range was equal to the (length -1) caused by the fact that these values
1825 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
1827 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
1829 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
1831 now supported properly.
1833 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
1834 in the disassembler, data table compiler, and table template generator.
1836 iASL: Added a requirement for Device() objects that one of either a _HID
1837 or _ADR must exist within the scope of a Device, as per the ACPI
1838 specification. Remove a similar requirement that was incorrectly in place
1839 for the _DSD object.
1841 iASL: Added error detection for illegal named references within control
1842 methods that would cause runtime failures. Now trapped as errors are: 1)
1843 References to objects within a non-parent control method. 2) Forward
1844 references (within a method) -- for control methods, AML interpreters use
1845 a one-pass parse of control methods. ACPICA BZ 1008.
1847 iASL: Added error checking for dependencies related to the _PSx power
1848 methods. ACPICA BZ 1029.
1849 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
1851 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
1854 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
1855 deploying the existing object and string caches and adding new caches for
1858 iASL: Split the huge parser source file into multiple subfiles to improve
1859 manageability. Generation now requires the M4 macro preprocessor, which
1860 is part of the Bison distribution on both unix and windows platforms.
1862 AcpiSrc: Fixed and removed all extraneous warnings generated during
1863 entire ACPICA source code scan and/or conversion.
1866 ----------------------------------------
1868 24 July 2014. Summary of changes for version 20140724:
1870 The ACPI 5.1 specification has been released and is available at:
1871 http://uefi.org/specs/access
1874 0) ACPI 5.1 support in ACPICA:
1876 ACPI 5.1 is fully supported in ACPICA as of this release.
1878 New predefined names. Support includes iASL and runtime ACPICA
1880 _CCA (Cache Coherency Attribute).
1881 _DSD (Device-Specific Data). David Box.
1883 Modifications to existing ACPI tables. Support includes headers, iASL
1884 Data Table compiler, disassembler, and the template generator.
1885 FADT - New fields and flags. Graeme Gregory.
1886 GTDT - One new subtable and new fields. Tomasz Nowicki.
1887 MADT - Two new subtables. Tomasz Nowicki.
1888 PCCT - One new subtable.
1891 New notification type for System Resource Affinity change events.
1894 1) ACPICA kernel-resident subsystem:
1896 Fixed a regression introduced in 20140627 where a fault can happen during
1897 the deletion of Alias AML namespace objects. The problem affected both
1898 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
1900 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
1901 simple mechanism to enable wake GPEs that have no associated handler or
1902 control method. Rafael Wysocki.
1904 Updated the AcpiEnableGpe interface to disallow the enable if there is no
1905 handler or control method associated with the particular GPE. This will
1906 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
1908 Updated GPE handling and dispatch by disabling the GPE before clearing
1909 the status bit for edge-triggered GPEs. Lv Zheng.
1911 Added Timer() support to the AML Debug object. The current timer value is
1912 now displayed with each invocation of (Store to) the debug object to
1913 enable simple generation of execution times for AML code (method
1914 execution for example.) ACPICA BZ 1093.
1916 Example Code and Data Size: These are the sizes for the OS-independent
1917 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1918 debug version of the code includes the debug output trace mechanism and
1919 has a much larger code and data size.
1922 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
1923 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1925 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1926 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1929 2) iASL Compiler/Disassembler and Tools:
1931 Fixed an issue with the recently added local printf implementation,
1932 concerning width/precision specifiers that could cause incorrect output.
1933 Lv Zheng. ACPICA BZ 1094.
1935 Disassembler: Added support to detect buffers that contain UUIDs and
1936 disassemble them to an invocation of the ToUUID operator. Also emit
1937 commented descriptions of known ACPI-related UUIDs.
1939 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
1940 -u. Adds three new files.
1942 iASL: Update table compiler and disassembler for DMAR table changes that
1943 were introduced in September 2013. With assistance by David Woodhouse.
1945 ----------------------------------------
1946 27 June 2014. Summary of changes for version 20140627:
1948 1) ACPICA kernel-resident subsystem:
1950 Formatted Output: Implemented local versions of standard formatted output
1951 utilities such as printf, etc. Over time, it has been discovered that
1952 there are in fact many portability issues with printf, and the addition
1953 of this feature will fix/prevent these issues once and for all. Some
1954 known issues are summarized below:
1956 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
1957 for the Linux kernel and is %uI64 for some MSVC versions.
1958 2) Invoking printf consistently in a manner that is portable across both
1959 32-bit and 64-bit platforms is difficult at best in many situations.
1960 3) The output format for pointers varies from system to system (leading
1961 zeros especially), and leads to inconsistent output from ACPICA across
1963 4) Certain platform-specific printf formats may conflict with ACPICA use.
1964 5) If there is no local C library available, ACPICA now has local support
1967 -- To address these printf issues in a complete manner, ACPICA now
1968 directly implements a small subset of printf format specifiers, only
1969 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
1971 Implemented support for ACPICA generation within the EFI environment.
1972 Initially, the AcpiDump utility is supported in the UEFI shell
1973 environment. Lv Zheng.
1975 Added a new external interface, AcpiLogError, to improve ACPICA
1976 portability. This allows the host to redirect error messages from the
1977 ACPICA utilities. Lv Zheng.
1979 Added and deployed new OSL file I/O interfaces to improve ACPICA
1987 There are C library implementations of these functions in the new file
1988 service_layers/oslibcfs.c -- however, the functions can be implemented by
1989 the local host in any way necessary. Lv Zheng.
1991 Implemented a mechanism to disable/enable ACPI table checksum validation
1992 at runtime. This can be useful when loading tables very early during OS
1993 initialization when it may not be possible to map the entire table in
1994 order to compute the checksum. Lv Zheng.
1996 Fixed a buffer allocation issue for the Generic Serial Bus support.
1997 Originally, a fixed buffer length was used. This change allows for
1998 variable-length buffers based upon the protocol indicated by the field
1999 access attributes. Reported by Lan Tianyu. Lv Zheng.
2001 Fixed a problem where an object detached from a namespace node was not
2002 properly terminated/cleared and could cause a circular list problem if
2003 reattached. ACPICA BZ 1063. David Box.
2005 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2007 Fixed a possible memory leak in an error return path within the function
2008 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2010 Example Code and Data Size: These are the sizes for the OS-independent
2011 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2012 debug version of the code includes the debug output trace mechanism and
2013 has a much larger code and data size.
2016 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2017 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2019 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2020 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2023 2) iASL Compiler/Disassembler and Tools:
2025 Disassembler: Add dump of ASCII equivalent text within a comment at the
2026 end of each line of the output for the Buffer() ASL operator.
2028 AcpiDump: Miscellaneous changes:
2029 Fixed repetitive table dump in -n mode.
2030 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
2031 the ACPI 2.0 GUID fails.
2033 iASL: Fixed a problem where the compiler could fault if incorrectly given
2034 an acpidump output file as input. ACPICA BZ 1088. David Box.
2036 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2037 they are invoked without any arguments.
2039 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2040 1086. Colin Ian King.
2042 Disassembler: Cleaned up a block of code that extracts a parent Op
2043 object. Added a comment that explains that the parent is guaranteed to be
2044 valid in this case. ACPICA BZ 1069.
2047 ----------------------------------------
2048 24 April 2014. Summary of changes for version 20140424:
2050 1) ACPICA kernel-resident subsystem:
2052 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2053 Some of these tables are known to contain a trailing NULL entry. Lv
2056 Removed an extraneous error message for the case where there are a large
2057 number of system GPEs (> 124). This was the "32-bit FADT register is too
2058 long to convert to GAS struct" message, which is irrelevant for GPEs
2059 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2060 (limited capacity) GAS bit length. Also, several changes to ensure proper
2061 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2064 Implemented and deployed additional configuration support for the public
2065 ACPICA external interfaces. Entire classes of interfaces can now be
2066 easily modified or configured out, replaced by stubbed inline functions
2067 by default. Lv Zheng.
2069 Moved all public ACPICA runtime configuration globals to the public
2070 ACPICA external interface file for convenience. Also, removed some
2071 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2073 Documentation: Added a new section to the ACPICA reference describing the
2074 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2075 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2078 Example Code and Data Size: These are the sizes for the OS-independent
2079 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2080 debug version of the code includes the debug output trace mechanism and
2081 has a much larger code and data size.
2084 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2085 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2087 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2088 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2091 2) iASL Compiler/Disassembler and Tools:
2093 iASL and disassembler: Add full support for the LPIT table (Low Power
2094 Idle Table). Includes support in the disassembler, data table compiler,
2095 and template generator.
2098 1) Add option to force the use of the RSDT (over the XSDT).
2099 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2101 iASL: Add check for predefined packages that are too large. For
2102 predefined names that contain subpackages, check if each subpackage is
2103 too large. (Check for too small already exists.)
2105 Debugger: Updated the GPE command (which simulates a GPE by executing the
2106 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2107 to the GPE 0/1 FADT-defined blocks.
2109 Unix application OSL: Update line-editing support. Add additional error
2110 checking and take care not to reset terminal attributes on exit if they
2111 were never set. This should help guarantee that the terminal is always
2112 left in the previous state on program exit.
2115 ----------------------------------------
2116 25 March 2014. Summary of changes for version 20140325:
2118 1) ACPICA kernel-resident subsystem:
2120 Updated the auto-serialize feature for control methods. This feature
2121 automatically serializes all methods that create named objects in order
2122 to prevent runtime errors. The update adds support to ignore the
2123 currently executing AML SyncLevel when invoking such a method, in order
2124 to prevent disruption of any existing SyncLevel priorities that may exist
2125 in the AML code. Although the use of SyncLevels is relatively rare, this
2126 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2127 appear on some machines starting with the 20140214 release.
2129 Added a new external interface to allow the host to install ACPI tables
2130 very early, before the namespace is even created. AcpiInstallTable gives
2131 the host additional flexibility for ACPI table management. Tables can be
2132 installed directly by the host as if they had originally appeared in the
2133 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2134 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2135 with additional internal restructuring and cleanup. See the ACPICA
2136 Reference for interface details. Lv Zheng.
2138 Added validation of the checksum for all incoming dynamically loaded
2139 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2142 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2143 and GPE handler removal. Restructured calls to eliminate possible race
2144 conditions. Lv Zheng.
2146 Added a warning for the use/execution of the ASL/AML Unload (table)
2147 operator. This will help detect and identify machines that use this
2148 operator if and when it is ever used. This operator has never been seen
2149 in the field and the usage model and possible side-effects of the drastic
2150 runtime action of a full table removal are unknown.
2152 Reverted the use of #pragma push/pop which was introduced in the 20140214
2153 release. It appears that push and pop are not implemented by enough
2154 compilers to make the use of this feature feasible for ACPICA at this
2155 time. However, these operators may be deployed in a future ACPICA
2158 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2161 Source code generation:
2162 1) Disabled the use of the "strchr" macro for the gcc-specific
2163 generation. For some versions of gcc, this macro can periodically expose
2164 a compiler bug which in turn causes compile-time error(s).
2165 2) Added support for PPC64 compilation. Colin Ian King.
2167 Example Code and Data Size: These are the sizes for the OS-independent
2168 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2169 debug version of the code includes the debug output trace mechanism and
2170 has a much larger code and data size.
2173 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2174 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2176 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2177 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2180 2) iASL Compiler/Disassembler and Tools:
2182 Disassembler: Added several new features to improve the readability of
2183 the resulting ASL code. Extra information is emitted within comment
2184 fields in the ASL code:
2185 1) Known _HID/_CID values are decoded to descriptive text.
2186 2) Standard values for the Notify() operator are decoded to descriptive
2188 3) Target operands are expanded to full pathnames (in a comment) when
2191 Disassembler: Miscellaneous updates for extern() handling:
2192 1) Abort compiler if file specified by -fe option does not exist.
2193 2) Silence unnecessary warnings about argument count mismatches.
2194 3) Update warning messages concerning unresolved method externals.
2195 4) Emit "UnknownObj" keyword for externals whose type cannot be
2199 1) Added the -a option to display both the ASL syntax and the AML
2200 encoding for an input ASL operator. This effectively displays all known
2201 information about an ASL operator with one AcpiHelp invocation.
2202 2) Added substring match support (similar to a wildcard) for the -i
2203 (_HID/PNP IDs) option.
2205 iASL/Disassembler: Since this tool does not yet support execution on big-
2206 endian machines, added detection of endianness and an error message if
2207 execution is attempted on big-endian. Support for big-endian within iASL
2208 is a feature that is on the ACPICA to-be-done list.
2211 1) Remove option to extract binary files from an acpidump; this function
2212 is made obsolete by the AcpiXtract utility.
2213 2) General cleanup of open files and allocated buffers.
2216 ----------------------------------------
2217 14 February 2014. Summary of changes for version 20140214:
2219 1) ACPICA kernel-resident subsystem:
2221 Implemented a new mechanism to proactively prevent problems with ill-
2222 behaved reentrant control methods that create named ACPI objects. This
2223 behavior is illegal as per the ACPI specification, but is nonetheless
2224 frequently seen in the field. Previously, this could lead to an
2225 AE_ALREADY_EXISTS exception if the method was actually entered by more
2226 than one thread. This new mechanism detects such methods at table load
2227 time and marks them "serialized" to prevent reentrancy. A new global
2228 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2229 feature if desired. This mechanism and global option obsoletes and
2230 supersedes the previous AcpiGbl_SerializeAllMethods option.
2232 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2233 respond TRUE to _OSI queries with this string. It is the stated policy of
2234 ACPICA to add new strings to the _OSI support as soon as possible after
2235 they are defined. See the full ACPICA _OSI policy which has been added to
2236 the utilities/utosi.c file.
2238 Hardened/updated the _PRT return value auto-repair code:
2239 1) Do not abort the repair on a single subpackage failure, continue to
2240 check all subpackages.
2241 2) Add check for the minimum subpackage length (4).
2242 3) Properly handle extraneous NULL package elements.
2244 Added support to avoid the possibility of infinite loops when traversing
2245 object linked lists. Never allow an infinite loop, even in the face of
2246 corrupted object lists.
2248 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2249 pack(pop) directives to ensure that the ACPICA headers are independent of
2250 compiler settings or other host headers.
2252 Example Code and Data Size: These are the sizes for the OS-independent
2253 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2254 debug version of the code includes the debug output trace mechanism and
2255 has a much larger code and data size.
2258 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2259 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2261 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2262 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2265 2) iASL Compiler/Disassembler and Tools:
2267 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2268 first reserved field was incorrectly forced to have a value of zero. This
2269 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2271 Debugger: Added missing support for the "Extra" and "Data" subobjects
2272 when displaying object data.
2274 Debugger: Added support to display entire object linked lists when
2275 displaying object data.
2277 iASL: Removed the obsolete -g option to obtain ACPI tables from the
2278 Windows registry. This feature has been superseded by the acpidump
2282 ----------------------------------------
2283 14 January 2014. Summary of changes for version 20140114:
2285 1) ACPICA kernel-resident subsystem:
2287 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2288 copyright to all module headers and signons, including the standard Linux
2289 header. This affects virtually every file in the ACPICA core subsystem,
2290 iASL compiler, all ACPICA utilities, and the test suites.
2292 Improved parameter validation for AcpiInstallGpeBlock. Added the
2294 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
2295 2) There is not already a GPE block attached to the device.
2296 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
2299 Correctly support "references" in the ACPI_OBJECT. This change fixes the
2300 support to allow references (namespace nodes) to be passed as arguments
2301 to control methods via the evaluate object interface. This is probably
2302 most useful for testing purposes, however.
2304 Improved support for 32/64 bit physical addresses in printf()-like
2305 output. This change improves the support for physical addresses in printf
2306 debug statements and other output on both 32-bit and 64-bit hosts. It
2307 consistently outputs the appropriate number of bytes for each host. The
2308 %p specifier is unsatisfactory since it does not emit uniform output on
2309 all hosts/clib implementations (on some, leading zeros are not supported,
2310 leading to difficult-to-read output).
2312 Example Code and Data Size: These are the sizes for the OS-independent
2313 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2314 debug version of the code includes the debug output trace mechanism and
2315 has a much larger code and data size.
2318 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2319 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2321 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2322 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2325 2) iASL Compiler/Disassembler and Tools:
2327 iASL: Fix a possible fault when using the Connection() operator. Fixes a
2328 problem if the parent Field definition for the Connection operator refers
2329 to an operation region that does not exist. ACPICA BZ 1064.
2331 AcpiExec: Load of local test tables is now optional. The utility has the
2332 capability to load some various tables to test features of ACPICA.
2333 However, there are enough of them that the output of the utility became
2334 confusing. With this change, only the required local tables are displayed
2335 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
2336 line specification. This makes the default output simler and easier to
2337 understand. The -el command line option restores the original behavior
2338 for testing purposes.
2340 AcpiExec: Added support for overlapping operation regions. This change
2341 expands the simulation of operation regions by supporting regions that
2342 overlap within the given address space. Supports SystemMemory and
2343 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
2345 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
2346 allows AcpiExec to simulate these address spaces, similar to the current
2347 support for SystemMemory and SystemIO.
2349 Debugger: Added new command to read/write/compare all namespace objects.
2350 The command "test objects" will exercise the entire namespace by writing
2351 new values to each data object, and ensuring that the write was
2352 successful. The original value is then restored and verified.
2354 Debugger: Added the "test predefined" command. This change makes this
2355 test public and puts it under the new "test" command. The test executes
2356 each and every predefined name within the current namespace.
2359 ----------------------------------------
2360 18 December 2013. Summary of changes for version 20131218:
2362 Global note: The ACPI 5.0A specification was released this month. There
2363 are no changes needed for ACPICA since this release of ACPI is an
2364 errata/clarification release. The specification is available at
2368 1) ACPICA kernel-resident subsystem:
2370 Added validation of the XSDT root table if it is present. Some older
2371 platforms contain an XSDT that is ill-formed or otherwise invalid (such
2372 as containing some or all entries that are NULL pointers). This change
2373 adds a new function to validate the XSDT before actually using it. If the
2374 XSDT is found to be invalid, ACPICA will now automatically fall back to
2375 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
2376 ACPICA and enhanced by Lv Zheng and Bob Moore.
2378 Added a runtime option to ignore the XSDT and force the use of the RSDT.
2379 This change adds a runtime option that will force ACPICA to use the RSDT
2380 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
2381 requires that an XSDT be used instead of the RSDT, the XSDT has been
2382 found to be corrupt or ill-formed on some machines. Lv Zheng.
2384 Added a runtime option to favor 32-bit FADT register addresses over the
2385 64-bit addresses. This change adds an option to favor 32-bit FADT
2386 addresses when there is a conflict between the 32-bit and 64-bit versions
2387 of the same register. The default behavior is to use the 64-bit version
2388 in accordance with the ACPI specification. This can now be overridden via
2389 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
2391 During the change above, the internal "Convert FADT" and "Verify FADT"
2392 functions have been merged to simplify the code, making it easier to
2393 understand and maintain. ACPICA BZ 933.
2395 Improve exception reporting and handling for GPE block installation.
2396 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
2397 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
2399 Added helper macros to extract bus/segment numbers from the HEST table.
2400 This change adds two macros to extract the encoded bus and segment
2401 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
2402 Betty Dall <betty.dall@hp.com>
2404 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
2405 by ACPICA. It is not a public macro, so it should have no effect on
2406 existing OSV code. Lv Zheng.
2408 Example Code and Data Size: These are the sizes for the OS-independent
2409 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2410 debug version of the code includes the debug output trace mechanism and
2411 has a much larger code and data size.
2414 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2415 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2417 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2418 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2421 2) iASL Compiler/Disassembler and Tools:
2423 Disassembler: Improved pathname support for emitted External()
2424 statements. This change adds full pathname support for external names
2425 that have been resolved internally by the inclusion of additional ACPI
2426 tables (via the iASL -e option). Without this change, the disassembler
2427 can emit multiple externals for the same object, or it become confused
2428 when the Scope() operator is used on an external object. Overall, greatly
2429 improves the ability to actually recompile the emitted ASL code when
2430 objects a referenced across multiple ACPI tables. Reported by Michael
2431 Tsirkin (mst@redhat.com).
2433 Tests/ASLTS: Updated functional control suite to execute with no errors.
2434 David Box. Fixed several errors related to the testing of the interpreter
2435 slack mode. Lv Zheng.
2437 iASL: Added support to detect names that are declared within a control
2438 method, but are unused (these are temporary names that are only valid
2439 during the time the method is executing). A remark is issued for these
2440 cases. ACPICA BZ 1022.
2442 iASL: Added full support for the DBG2 table. Adds full disassembler,
2443 table compiler, and template generator support for the DBG2 table (Debug
2446 iASL: Added full support for the PCCT table, update the table definition.
2447 Updates the PCCT table definition in the actbl3.h header and adds table
2448 compiler and template generator support.
2450 iASL: Added an option to emit only error messages (no warnings/remarks).
2451 The -ve option will enable only error messages, warnings and remarks are
2452 suppressed. This can simplify debugging when only the errors are
2453 important, such as when an ACPI table is disassembled and there are many
2454 warnings and remarks -- but only the actual errors are of real interest.
2456 Example ACPICA code (source/tools/examples): Updated the example code so
2457 that it builds to an actual working program, not just example code. Added
2458 ACPI tables and execution of an example control method in the DSDT. Added
2459 makefile support for Unix generation.
2462 ----------------------------------------
2463 15 November 2013. Summary of changes for version 20131115:
2465 This release is available at https://acpica.org/downloads
2468 1) ACPICA kernel-resident subsystem:
2470 Resource Manager: Fixed loop termination for the "get AML length"
2471 function. The loop previously had an error termination on a NULL resource
2472 pointer, which can never happen since the loop simply increments a valid
2473 resource pointer. This fix changes the loop to terminate with an error on
2474 an invalid end-of-buffer condition. The problem can be seen as an
2475 infinite loop by callers to AcpiSetCurrentResources with an invalid or
2476 corrupted resource descriptor, or a resource descriptor that is missing
2477 an END_TAG descriptor. Reported by Dan Carpenter
2478 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
2480 Table unload and ACPICA termination: Delete all attached data objects
2481 during namespace node deletion. This fix updates namespace node deletion
2482 to delete the entire list of attached objects (attached via
2483 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
2484 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
2486 ACPICA termination: Added support to delete all objects attached to the
2487 root namespace node. This fix deletes any and all objects that have been
2488 attached to the root node via AcpiAttachData. Previously, none of these
2489 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
2491 Debug output: Do not emit the function nesting level for the in-kernel
2492 build. The nesting level is really only useful during a single-thread
2493 execution. Therefore, only enable this output for the AcpiExec utility.
2494 Also, only emit the thread ID when executing under AcpiExec (Context
2495 switches are still always detected and a message is emitted). ACPICA BZ
2498 Example Code and Data Size: These are the sizes for the OS-independent
2499 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2500 debug version of the code includes the debug output trace mechanism and
2501 has a much larger code and data size.
2504 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2505 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2507 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2508 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2511 2) iASL Compiler/Disassembler and Tools:
2513 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
2514 correct portable POSIX header for terminal control functions.
2516 Disassembler: Fixed control method invocation issues related to the use
2517 of the CondRefOf() operator. The problem is seen in the disassembly where
2518 control method invocations may not be disassembled properly if the
2519 control method name has been used previously as an argument to CondRefOf.
2520 The solution is to not attempt to emit an external declaration for the
2521 CondRefOf target (it is not necessary in the first place). This prevents
2522 disassembler object type confusion. ACPICA BZ 988.
2524 Unix Makefiles: Added an option to disable compiler optimizations and the
2525 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
2526 with optimizations (reportedly, gcc 4.4 for example). This change adds a
2527 command line option for make (NOOPT) that disables all compiler
2528 optimizations and the _FORTIFY_SOURCE compiler flag. The default
2529 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
2530 1034. Lv Zheng, Bob Moore.
2532 Tests/ASLTS: Added options to specify individual test cases and modes.
2533 This allows testers running aslts.sh to optionally specify individual
2534 test modes and test cases. Also added an option to disable the forced
2535 generation of the ACPICA tools from source if desired. Lv Zheng.
2537 ----------------------------------------
2538 27 September 2013. Summary of changes for version 20130927:
2540 This release is available at https://acpica.org/downloads
2543 1) ACPICA kernel-resident subsystem:
2545 Fixed a problem with store operations to reference objects. This change
2546 fixes a problem where a Store operation to an ArgX object that contained
2548 reference to a field object did not complete the automatic dereference
2550 then write to the actual field object. Instead, the object type of the
2551 field object was inadvertently changed to match the type of the source
2552 operand. The new behavior will actually write to the field object (buffer
2553 field or field unit), thus matching the correct ACPI-defined behavior.
2555 Implemented support to allow the host to redefine individual OSL
2556 prototypes. This change enables the host to redefine OSL prototypes found
2557 in the acpiosxf.h file. This allows the host to implement OSL interfaces
2558 with a macro or inlined function. Further, it allows the host to add any
2559 additional required modifiers such as __iomem, __init, __exit, etc., as
2560 necessary on a per-interface basis. Enables maximum flexibility for the
2561 OSL interfaces. Lv Zheng.
2563 Hardcoded the access width for the FADT-defined reset register. The ACPI
2564 specification requires the reset register width to be 8 bits. ACPICA now
2565 hardcodes the width to 8 and ignores the FADT width value. This provides
2566 compatibility with other ACPI implementations that have allowed BIOS code
2567 with bad register width values to go unnoticed. Matthew Garett, Bob
2571 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
2573 in the OSL header (acpiosxf). The change modifies the position of this
2574 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
2575 build issues if the OSL defines the implementation of the interface to be
2576 an inline stub function. Lv Zheng.
2578 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
2579 initialization interfaces. This change adds a new macro for the main init
2580 and terminate external interfaces in order to support hosts that require
2581 additional or different processing for these functions. Changed from
2582 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
2585 Cleaned up the memory allocation macros for configurability. In the
2587 case, the ACPI_ALLOCATE and related macros now resolve directly to their
2588 respective AcpiOs* OSL interfaces. Two options:
2589 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
2590 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2591 2) For AcpiExec (and for debugging), the macros can optionally be
2593 to the local ACPICA interfaces that track each allocation (local tracking
2594 is used to immediately detect memory leaks).
2597 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
2598 to predefine this macro to either TRUE or FALSE during the system build.
2600 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
2602 Example Code and Data Size: These are the sizes for the OS-independent
2603 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2604 debug version of the code includes the debug output trace mechanism and
2605 has a much larger code and data size.
2608 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2609 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2611 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2612 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2615 2) iASL Compiler/Disassembler and Tools:
2617 iASL: Implemented wildcard support for the -e option. This simplifies use
2618 when there are many SSDTs that must be included to resolve external
2620 declarations. ACPICA BZ 1041. Example:
2621 iasl -e ssdt*.dat -d dsdt.dat
2623 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
2624 adds a portable module that implements full history and limited line
2625 editing for Unix and Linux systems. It does not use readline() due to
2626 portability issues. Instead it uses the POSIX termio interface to put the
2627 terminal in raw input mode so that the various special keys can be
2629 (such as up/down-arrow for history support and left/right-arrow for line
2630 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
2632 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
2633 one or more spaces. This provides compatible with early or different
2634 versions of the AcpiDump utility. ACPICA BZ 1044.
2636 AcpiDump: Do not ignore tables that contain only an ACPI table header.
2637 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
2638 no other data. This change adds support to dump these tables. Any tables
2639 shorter than the length of an ACPI table header remain in error (an error
2640 message is emitted). Reported by Yi Li.
2642 Debugger: Echo actual command along with the "unknown command" message.
2644 ----------------------------------------
2645 23 August 2013. Summary of changes for version 20130823:
2647 1) ACPICA kernel-resident subsystem:
2649 Implemented support for host-installed System Control Interrupt (SCI)
2650 handlers. Certain ACPI functionality requires the host to handle raw
2651 SCIs. For example, the "SCI Doorbell" that is defined for memory power
2652 state support requires the host device driver to handle SCIs to examine
2653 if the doorbell has been activated. Multiple SCI handlers can be
2654 installed to allow for future expansion. New external interfaces are
2655 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
2656 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
2658 Operation region support: Never locally free the handler "context"
2659 pointer. This change removes some dangerous code that attempts to free
2660 the handler context pointer in some (rare) circumstances. The owner of
2661 the handler owns this pointer and the ACPICA code should never touch it.
2662 Although not seen to be an issue in any kernel, it did show up as a
2663 problem (fault) under AcpiExec. Also, set the internal storage field for
2664 the context pointer to zero when the region is deactivated, simply for
2665 sanity. David Box. ACPICA BZ 1039.
2667 AcpiRead: On error, do not modify the return value target location. If an
2668 error happens in the middle of a split 32/32 64-bit I/O operation, do not
2669 modify the target of the return value pointer. Makes the code consistent
2670 with the rest of ACPICA. Bjorn Helgaas.
2672 Example Code and Data Size: These are the sizes for the OS-independent
2673 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2674 debug version of the code includes the debug output trace mechanism and
2675 has a much larger code and data size.
2678 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2679 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2681 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2682 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
2685 2) iASL Compiler/Disassembler and Tools:
2687 AcpiDump: Implemented several new features and fixed some problems:
2688 1) Added support to dump the RSDP, RSDT, and XSDT tables.
2689 2) Added support for multiple table instances (SSDT, UEFI).
2690 3) Added option to dump "customized" (overridden) tables (-c).
2691 4) Fixed a problem where some table filenames were improperly
2693 5) Improved some error messages, removed some unnecessary messages.
2695 iASL: Implemented additional support for disassembly of ACPI tables that
2696 contain invocations of external control methods. The -fe<file> option
2697 allows the import of a file that specifies the external methods along
2698 with the required number of arguments for each -- allowing for the
2699 correct disassembly of the table. This is a workaround for a limitation
2700 of AML code where the disassembler often cannot determine the number of
2701 arguments required for an external control method and generates incorrect
2702 ASL code. See the iASL reference for details. ACPICA BZ 1030.
2704 Debugger: Implemented a new command (paths) that displays the full
2705 pathnames (namepaths) and object types of all objects in the namespace.
2706 This is an alternative to the namespace command.
2708 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
2709 mechanism and any installed handlers.
2711 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
2712 This can occur if there are too many parent prefixes in a namepath (for
2713 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
2715 Application OSLs: Set the return value for the PCI read functions. These
2716 functions simply return AE_OK, but should set the return value to zero
2717 also. This change implements this. ACPICA BZ 1038.
2719 Debugger: Prevent possible command line buffer overflow. Increase the
2720 size of a couple of the debugger line buffers, and ensure that overflow
2721 cannot happen. ACPICA BZ 1037.
2723 iASL: Changed to abort immediately on serious errors during the parsing
2724 phase. Due to the nature of ASL, there is no point in attempting to
2725 compile these types of errors, and they typically end up causing a
2726 cascade of hundreds of errors which obscure the original problem.
2728 ----------------------------------------
2729 25 July 2013. Summary of changes for version 20130725:
2731 1) ACPICA kernel-resident subsystem:
2733 Fixed a problem with the DerefOf operator where references to FieldUnits
2734 and BufferFields incorrectly returned the parent object, not the actual
2735 value of the object. After this change, a dereference of a FieldUnit
2736 reference results in a read operation on the field to get the value, and
2737 likewise, the appropriate BufferField value is extracted from the target
2740 Fixed a problem where the _WAK method could cause a fault under these
2741 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
2742 method returned no value. The problem is rarely seen because most kernels
2743 run ACPICA in slack mode.
2745 For the DerefOf operator, a fatal error now results if an attempt is made
2746 to dereference a reference (created by the Index operator) to a NULL
2747 package element. Provides compatibility with other ACPI implementations,
2748 and this behavior will be added to a future version of the ACPI
2751 The ACPI Power Management Timer (defined in the FADT) is now optional.
2752 This provides compatibility with other ACPI implementations and will
2753 appear in the next version of the ACPI specification. If there is no PM
2754 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
2755 zero in the FADT indicates no PM timer.
2757 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
2758 allows the host to globally enable/disable all vendor strings, all
2759 feature strings, or both. Intended to be primarily used for debugging
2760 purposes only. Lv Zheng.
2762 Expose the collected _OSI data to the host via a global variable. This
2763 data tracks the highest level vendor ID that has been invoked by the BIOS
2764 so that the host (and potentially ACPICA itself) can change behaviors
2765 based upon the age of the BIOS.
2767 Example Code and Data Size: These are the sizes for the OS-independent
2768 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2769 debug version of the code includes the debug output trace mechanism and
2770 has a much larger code and data size.
2773 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2774 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2776 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2777 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2780 2) iASL Compiler/Disassembler and Tools:
2782 iASL: Created the following enhancements for the -so option (create
2784 1)Add offsets for the last nameseg in each namepath for every supported
2786 2)Add support for Processor, Device, Thermal Zone, and Scope objects
2787 3)Add the actual AML opcode for the parent object of every supported
2789 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
2791 Disassembler: Emit all unresolved external symbols in a single block.
2792 These are external references to control methods that could not be
2793 resolved, and thus, the disassembler had to make a guess at the number of
2796 iASL: The argument to the -T option (create table template) is now
2797 optional. If not specified, the default table is a DSDT, typically the
2800 ----------------------------------------
2801 26 June 2013. Summary of changes for version 20130626:
2803 1) ACPICA kernel-resident subsystem:
2805 Fixed an issue with runtime repair of the _CST object. Null or invalid
2806 elements were not always removed properly. Lv Zheng.
2808 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
2809 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
2810 the maximum number of GPEs is 1016. Use of multiple GPE block devices
2811 makes the system-wide number of GPEs essentially unlimited.
2813 Example Code and Data Size: These are the sizes for the OS-independent
2814 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2815 debug version of the code includes the debug output trace mechanism and
2816 has a much larger code and data size.
2819 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2820 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2822 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2823 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2826 2) iASL Compiler/Disassembler and Tools:
2828 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
2829 hosts. Now supports Linux, FreeBSD, and Windows.
2831 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
2832 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
2834 iASL/Preprocessor: Implemented full support for nested
2835 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
2837 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
2838 max. The original purpose of this constraint was to limit the amount of
2839 debug output. However, the string function in question (UtPrintString) is
2840 now used for the disassembler also, where 256 bytes is insufficient.
2841 Reported by RehabMan@GitHub.
2843 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
2844 tables. ACPICA BZ 999. Lv Zheng.
2846 iASL: Fixed a couple of error exit issues that could result in a "Could
2847 not delete <file>" message during ASL compilation.
2849 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
2850 the actual signatures for these tables are "FACP" and "APIC",
2853 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
2854 tables are allowed to have multiple instances.
2856 ----------------------------------------
2857 17 May 2013. Summary of changes for version 20130517:
2859 1) ACPICA kernel-resident subsystem:
2861 Fixed a regression introduced in version 20130328 for _INI methods. This
2862 change fixes a problem introduced in 20130328 where _INI methods are no
2863 longer executed properly because of a memory block that was not
2864 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
2865 <tomasz.nowicki@linaro.org>.
2867 Fixed a possible problem with the new extended sleep registers in the
2869 5.0 FADT. Do not use these registers (even if populated) unless the HW-
2870 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
2873 Implemented return value repair code for _CST predefined objects: Sort
2875 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
2877 Implemented a debug-only option to disable loading of SSDTs from the
2878 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
2879 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
2880 acglobal.h - ACPICA BZ 1005. Lv Zheng.
2882 Fixed some issues in the ACPICA initialization and termination code:
2883 Tomasz Nowicki <tomasz.nowicki@linaro.org>
2884 1) Clear events initialized flag upon event component termination. ACPICA
2886 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
2887 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
2888 4) Clear debug buffer global on termination to prevent possible multiple
2889 delete. ACPICA BZ 1010.
2891 Standardized all switch() blocks across the entire source base. After
2893 years, different formatting for switch() had crept in. This change makes
2894 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
2896 Split some files to enhance ACPICA modularity and configurability:
2897 1) Split buffer dump routines into utilities/utbuffer.c
2898 2) Split internal error message routines into utilities/uterror.c
2899 3) Split table print utilities into tables/tbprint.c
2900 4) Split iASL command-line option processing into asloptions.c
2902 Makefile enhancements:
2903 1) Support for all new files above.
2904 2) Abort make on errors from any subcomponent. Chao Guan.
2905 3) Add build support for Apple Mac OS X. Liang Qi.
2907 Example Code and Data Size: These are the sizes for the OS-independent
2908 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2909 debug version of the code includes the debug output trace mechanism and
2910 has a much larger code and data size.
2913 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2914 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2916 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2917 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2920 2) iASL Compiler/Disassembler and Tools:
2922 New utility: Implemented an easily portable version of the acpidump
2923 utility to extract ACPI tables from the system (or a file) in an ASCII
2925 dump format. The top-level code implements the various command line
2926 options, file I/O, and table dump routines. To port to a new host, only
2927 three functions need to be implemented to get tables -- since this
2928 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
2929 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
2930 1) The Windows version obtains the ACPI tables from the Registry.
2931 2) The Linux version is under development.
2932 3) Other hosts - If an OS-dependent module is submitted, it will be
2933 distributed with ACPICA.
2935 iASL: Fixed a regression for -D preprocessor option (define symbol). A
2936 restructuring/change to the initialization sequence caused this option to
2937 no longer work properly.
2939 iASL: Implemented a mechanism to disable specific warnings and remarks.
2940 Adds a new command line option, "-vw <messageid> as well as "#pragma
2941 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
2943 iASL: Fix for too-strict package object validation. The package object
2944 validation for return values from the predefined names is a bit too
2945 strict, it does not allow names references within the package (which will
2946 be resolved at runtime.) These types of references cannot be validated at
2947 compile time. This change ignores named references within package objects
2948 for names that return or define static packages.
2950 Debugger: Fixed the 80-character command line limitation for the History
2951 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
2953 iASL: Added control method and package support for the -so option
2954 (generates AML offset table for BIOS support.)
2956 iASL: issue a remark if a non-serialized method creates named objects. If
2957 a thread blocks within the method for any reason, and another thread
2958 enters the method, the method will fail because an attempt will be made
2960 create the same (named) object twice. In this case, issue a remark that
2961 the method should be marked serialized. NOTE: may become a warning later.
2964 ----------------------------------------
2965 18 April 2013. Summary of changes for version 20130418:
2967 1) ACPICA kernel-resident subsystem:
2969 Fixed a possible buffer overrun during some rare but specific field unit
2970 read operations. This overrun can only happen if the DSDT version is 1 --
2971 meaning that all AML integers are 32 bits -- and the field length is
2972 between 33 and 55 bits long. During the read, an internal buffer object
2974 created for the field unit because the field is larger than an integer
2976 bits). However, in this case, the buffer will be incorrectly written
2977 beyond the end because the buffer length is less than the internal
2979 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
2980 long, but a full 8 bytes will be written.
2982 Updated the Embedded Controller "orphan" _REG method support. This refers
2983 to _REG methods under the EC device that have no corresponding operation
2984 region. This is allowed by the ACPI specification. This update removes a
2985 dependency on the existence an ECDT table. It will execute an orphan _REG
2986 method as long as the operation region handler for the EC is installed at
2987 the EC device node and not the namespace root. Rui Zhang (original
2988 update), Bob Moore (update/integrate).
2990 Implemented run-time argument typechecking for all predefined ACPI names
2991 (_STA, _BIF, etc.) This change performs object typechecking on all
2992 incoming arguments for all predefined names executed via
2993 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
2994 passing correct object types as well as the correct number of arguments
2995 (therefore identifying any issues immediately). Also, the ASL/namespace
2996 definition of the predefined name is checked against the ACPI
2997 specification for the proper argument count. Adds one new file,
3000 Changed an exception code for the ASL UnLoad() operator. Changed the
3001 exception code for the case where the input DdbHandle is invalid, from
3002 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3004 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3005 global makefile. The use of this flag causes compiler errors on earlier
3006 versions of GCC, so it has been removed for compatibility.
3008 Miscellaneous cleanup:
3009 1) Removed some unused/obsolete macros
3010 2) Fixed a possible memory leak in the _OSI support
3011 3) Removed an unused variable in the predefined name support
3012 4) Windows OSL: remove obsolete reference to a memory list field
3014 Example Code and Data Size: These are the sizes for the OS-independent
3015 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3016 debug version of the code includes the debug output trace mechanism and
3017 has a much larger code and data size.
3020 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3021 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3023 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3024 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3027 2) iASL Compiler/Disassembler and Tools:
3029 AcpiExec: Added installation of a handler for the SystemCMOS address
3030 space. This prevents control method abort if a method accesses this
3033 AcpiExec: Added support for multiple EC devices, and now install EC
3034 operation region handler(s) at the actual EC device instead of the
3035 namespace root. This reflects the typical behavior of host operating
3038 AcpiExec: Updated to ensure that all operation region handlers are
3039 installed before the _REG methods are executed. This prevents a _REG
3040 method from aborting if it accesses an address space has no handler.
3041 AcpiExec installs a handler for every possible address space.
3043 Debugger: Enhanced the "handlers" command to display non-root handlers.
3044 This change enhances the handlers command to display handlers associated
3045 with individual devices throughout the namespace, in addition to the
3046 currently supported display of handlers associated with the root
3050 ASL Test Suite: Several test suite errors have been identified and
3051 resolved, reducing the total error count during execution. Chao Guan.
3053 ----------------------------------------
3054 28 March 2013. Summary of changes for version 20130328:
3056 1) ACPICA kernel-resident subsystem:
3058 Fixed several possible race conditions with the internal object reference
3059 counting mechanism. Some of the external ACPICA interfaces update object
3060 reference counts without holding the interpreter or namespace lock. This
3061 change adds a spinlock to protect reference count updates on the internal
3062 ACPICA objects. Reported by and with assistance from Andriy Gapon
3065 FADT support: Removed an extraneous warning for very large GPE register
3066 sets. This change removes a size mismatch warning if the legacy length
3067 field for a GPE register set is larger than the 64-bit GAS structure can
3068 accommodate. GPE register sets can be larger than the 255-bit width
3069 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3071 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3072 return from this interface. Handles a possible timeout case if
3073 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3074 "forever". Jung-uk Kim.
3076 Predefined name support: Add allowed/required argument type information
3078 the master predefined info table. This change adds the infrastructure to
3079 enable typechecking on incoming arguments for all predefined
3080 methods/objects. It does not actually contain the code that will fully
3081 utilize this information, this is still under development. Also condenses
3082 some duplicate code for the predefined names into a new module,
3083 utilities/utpredef.c
3085 Example Code and Data Size: These are the sizes for the OS-independent
3086 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3087 debug version of the code includes the debug output trace mechanism and
3088 has a much larger code and data size.
3091 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3092 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3094 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3095 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3098 2) iASL Compiler/Disassembler and Tools:
3100 iASL: Implemented a new option to simplify the development of ACPI-
3102 BIOS code. Adds support for a new "offset table" output file. The -so
3103 option will create a C table containing the AML table offsets of various
3104 named objects in the namespace so that BIOS code can modify them easily
3106 boot time. This can simplify BIOS runtime code by eliminating expensive
3107 searches for "magic values", enhancing boot times and adding greater
3108 reliability. With assistance from Lee Hamel.
3110 iASL: Allow additional predefined names to return zero-length packages.
3111 Now, all predefined names that are defined by the ACPI specification to
3112 return a "variable-length package of packages" are allowed to return a
3113 zero length top-level package. This allows the BIOS to tell the host that
3114 the requested feature is not supported, and supports existing BIOS/ASL
3117 iASL: Changed the "result not used" warning to an error. This is the case
3118 where an ASL operator is effectively a NOOP because the result of the
3119 operation is not stored anywhere. For example:
3121 There is no target (missing 3rd argument), nor is the function return
3122 value used. This is potentially a very serious problem -- since the code
3123 was probably intended to do something, but for whatever reason, the value
3124 was not stored. Therefore, this issue has been upgraded from a warning to
3127 AcpiHelp: Added allowable/required argument types to the predefined names
3128 info display. This feature utilizes the recent update to the predefined
3129 names table (above).
3131 ----------------------------------------
3132 14 February 2013. Summary of changes for version 20130214:
3134 1) ACPICA Kernel-resident Subsystem:
3136 Fixed a possible regression on some hosts: Reinstated the safe return
3137 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3138 evaluated only once. Although these macros are not needed for the ACPICA
3139 code itself, they are often used by ACPI-related host device drivers
3141 the safe feature may be necessary.
3143 Fixed several issues related to the ACPI 5.0 reduced hardware support
3144 (SOC): Now ensure that if the platform declares itself as hardware-
3146 via the FADT, the following functions become NOOPs (and always return
3147 AE_OK) because ACPI is always enabled by definition on these machines:
3153 Dynamic Object Repair: Implemented additional runtime repairs for
3154 predefined name return values. Both of these repairs can simplify code in
3155 the related device drivers that invoke these methods:
3156 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3157 string to a Unicode buffer.
3158 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3160 lone end tag descriptor in the following cases: A Return(0) was executed,
3161 a null buffer was returned, or no object at all was returned (non-slack
3162 mode only). Adds a new file, nsconvert.c
3163 ACPICA BZ 998. Bob Moore, Lv Zheng.
3165 Resource Manager: Added additional code to prevent possible infinite
3167 while traversing corrupted or ill-formed resource template buffers. Check
3168 for zero-length resource descriptors in all code that loops through
3169 resource templates (the length field is used to index through the
3170 template). This change also hardens the external AcpiWalkResources and
3171 AcpiWalkResourceBuffer interfaces.
3173 Local Cache Manager: Enhanced the main data structure to eliminate an
3174 unnecessary mechanism to access the next object in the list. Actually
3175 provides a small performance enhancement for hosts that use the local
3176 ACPICA cache manager. Jung-uk Kim.
3178 Example Code and Data Size: These are the sizes for the OS-independent
3179 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3180 debug version of the code includes the debug output trace mechanism and
3181 has a much larger code and data size.
3184 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3185 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3187 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3188 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3191 2) iASL Compiler/Disassembler and Tools:
3193 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3194 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3195 that were made to the ACPI 5.0 specification.
3197 iASL/Disassembler: Added full support for the following new ACPI tables:
3198 1) The MTMR table (MID Timer Table)
3199 2) The VRTC table (Virtual Real Time Clock Table).
3200 Includes header file, disassembler, table compiler, and template support
3203 iASL: Implemented compile-time validation of package objects returned by
3204 predefined names. This new feature validates static package objects
3205 returned by the various predefined names defined to return packages. Both
3206 object types and package lengths are validated, for both parent packages
3207 and sub-packages, if any. The code is similar in structure and behavior
3209 the runtime repair mechanism within the AML interpreter and uses the
3210 existing predefined name information table. Adds a new file, aslprepkg.c.
3213 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3214 This feature detects a binary file with a valid ACPI table header and
3215 invokes the disassembler automatically. Eliminates the need to
3216 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3218 iASL/Disassembler: Added several warnings for the case where there are
3219 unresolved control methods during the disassembly. This can potentially
3220 cause errors when the output file is compiled, because the disassembler
3221 assumes zero method arguments in these cases (it cannot determine the
3222 actual number of arguments without resolution/definition of the method).
3224 Debugger: Added support to display all resources with a single command.
3225 Invocation of the resources command with no arguments will now display
3227 resources within the current namespace.
3229 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3232 ----------------------------------------
3233 17 January 2013. Summary of changes for version 20130117:
3235 1) ACPICA Kernel-resident Subsystem:
3237 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3238 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3239 objects to return a package containing one integer, most BIOS code
3241 two integers and the previous code reflects that. However, we also need
3243 support BIOS code that actually implements to the ACPI spec, and this
3244 change reflects this.
3246 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3247 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3248 C compilers that require this support.
3249 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3250 ACPI_DEBUG is already used by many of the various hosts.
3252 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3253 copyright to all module headers and signons, including the standard Linux
3254 header. This affects virtually every file in the ACPICA core subsystem,
3255 iASL compiler, all ACPICA utilities, and the test suites.
3257 Example Code and Data Size: These are the sizes for the OS-independent
3258 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3259 debug version of the code includes the debug output trace mechanism and
3260 has a much larger code and data size.
3263 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3264 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3266 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3267 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3270 2) iASL Compiler/Disassembler and Tools:
3272 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3273 prevent a possible fault on some hosts. Some C libraries modify the arg
3274 pointer parameter to vfprintf making it difficult to call it twice in the
3275 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
3276 does not affect the Windows OSL since the Win C library does not modify
3277 the arg pointer. Chao Guan, Bob Moore.
3279 iASL: Fixed a possible infinite loop when the maximum error count is
3280 reached. If an output file other than the .AML file is specified (such as
3281 a listing file), and the maximum number of errors is reached, do not
3282 attempt to flush data to the output file(s) as the compiler is aborting.
3283 This can cause an infinite loop as the max error count code essentially
3284 keeps calling itself.
3286 iASL/Disassembler: Added an option (-in) to ignore NOOP
3288 Implemented for both the compiler and the disassembler. Often, the NOOP
3289 opcode is used as padding for packages that are changed dynamically by
3291 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
3292 errors. This option causes the disassembler to ignore all NOOP opcodes
3293 (0xA3), and it also causes the compiler to ignore all ASL source code
3297 Debugger: Enhanced the Sleep command to execute all sleep states. This
3298 change allows Sleep to be invoked with no arguments and causes the
3299 debugger to execute all of the sleep states, 0-5, automatically.
3301 ----------------------------------------
3302 20 December 2012. Summary of changes for version 20121220:
3304 1) ACPICA Kernel-resident Subsystem:
3306 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
3307 alternate entry point for AcpiWalkResources and improves the usability of
3308 the resource manager by accepting as input a buffer containing the output
3309 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
3310 input buffer is not deleted by this interface so that it can be used by
3311 the host later. See the ACPICA reference for details.
3313 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
3314 (DSDT version < 2). The constant will be truncated and this warning
3315 reflects that behavior.
3317 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
3318 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
3319 both get and set the new wake bit in these descriptors, separately from
3320 the existing share bit. Reported by Aaron Lu.
3322 Interpreter: Fix Store() when an implicit conversion is not possible. For
3323 example, in the cases such as a store of a string to an existing package
3324 object, implement the store as a CopyObject(). This is a small departure
3325 from the ACPI specification which states that the control method should
3327 aborted in this case. However, the ASLTS suite depends on this behavior.
3329 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
3330 macros: check if debug output is currently enabled as soon as possible to
3331 minimize performance impact if debug is in fact not enabled.
3333 Source code restructuring: Cleanup to improve modularity. The following
3334 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
3335 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
3336 Associated makefiles and project files have been updated.
3338 Changed an exception code for LoadTable operator. For the case where one
3339 of the input strings is too long, change the returned exception code from
3340 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
3342 Fixed a possible memory leak in dispatcher error path. On error, delete
3343 the mutex object created during method mutex creation. Reported by
3344 tim.gardner@canonical.com.
3346 Example Code and Data Size: These are the sizes for the OS-independent
3347 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3348 debug version of the code includes the debug output trace mechanism and
3349 has a much larger code and data size.
3352 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3353 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3355 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3356 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3359 2) iASL Compiler/Disassembler and Tools:
3361 iASL: Disallow a method call as argument to the ObjectType ASL operator.
3362 This change tracks an errata to the ACPI 5.0 document. The AML grammar
3363 will not allow the interpreter to differentiate between a method and a
3364 method invocation when these are used as an argument to the ObjectType
3365 operator. The ACPI specification change is to disallow a method
3367 (UserTerm) for the ObjectType operator.
3369 Finish support for the TPM2 and CSRT tables in the headers, table
3370 compiler, and disassembler.
3372 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
3373 always expires immediately if the semaphore is not available. The
3375 code was using a relative-time timeout, but sem_timedwait requires the
3377 of an absolute time.
3379 iASL: Added a remark if the Timer() operator is used within a 32-bit
3380 table. This operator returns a 64-bit time value that will be truncated
3381 within a 32-bit table.
3383 iASL Source code restructuring: Cleanup to improve modularity. The
3384 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
3385 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
3389 ----------------------------------------
3390 14 November 2012. Summary of changes for version 20121114:
3392 1) ACPICA Kernel-resident Subsystem:
3394 Implemented a performance enhancement for ACPI/AML Package objects. This
3395 change greatly increases the performance of Package objects within the
3396 interpreter. It changes the processing of reference counts for packages
3398 optimizing for the most common case where the package sub-objects are
3399 either Integers, Strings, or Buffers. Increases the overall performance
3401 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
3403 Chao Guan. ACPICA BZ 943.
3405 Implemented and deployed common macros to extract flag bits from resource
3406 descriptors. Improves readability and maintainability of the code. Fixes
3408 problem with the UART serial bus descriptor for the number of data bits
3409 flags (was incorrectly 2 bits, should be 3).
3411 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
3412 of the macros and changed the SETx macros to the style of (destination,
3413 source). Also added ACPI_CASTx companion macros. Lv Zheng.
3415 Example Code and Data Size: These are the sizes for the OS-independent
3416 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3417 debug version of the code includes the debug output trace mechanism and
3418 has a much larger code and data size.
3421 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3422 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3424 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3425 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3428 2) iASL Compiler/Disassembler and Tools:
3430 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
3431 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
3432 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
3434 Disassembler: Fixed a problem with external declaration generation. Fixes
3435 a problem where an incorrect pathname could be generated for an external
3436 declaration if the original reference to the object includes leading
3437 carats (^). ACPICA BZ 984.
3439 Debugger: Completed a major update for the Disassemble<method> command.
3440 This command was out-of-date and did not properly disassemble control
3441 methods that had any reasonable complexity. This fix brings the command
3443 to the same level as the rest of the disassembler. Adds one new file,
3444 dmdeferred.c, which is existing code that is now common with the main
3445 disassembler and the debugger disassemble command. ACPICA MZ 978.
3447 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
3448 Newer versions of Bison emit this prototype, so moved the prototype out
3450 the iASL header to where it is actually used in order to avoid a
3454 iASL/Tools: Standardized use of the stream I/O functions:
3455 1) Ensure check for I/O error after every fopen/fread/fwrite
3456 2) Ensure proper order of size/count arguments for fread/fwrite
3457 3) Use test of (Actual != Requested) after all fwrite, and most fread
3458 4) Standardize I/O error messages
3459 Improves reliability and maintainability of the code. Bob Moore, Lv
3463 Disassembler: Prevent duplicate External() statements. During generation
3464 of external statements, detect similar pathnames that are actually
3465 duplicates such as these:
3468 Remove all leading '\' characters from pathnames during the external
3469 statement generation so that duplicates will be detected and tossed.
3472 Tools: Replace low-level I/O with stream I/O functions. Replace
3473 open/read/write/close with the stream I/O equivalents
3474 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
3477 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
3478 name header so that AcpiXtract recognizes the output file/table.
3480 iASL: Remove obsolete -2 option flag. Originally intended to force the
3481 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
3482 and the entire concept is now obsolete.
3484 ----------------------------------------
3485 18 October 2012. Summary of changes for version 20121018:
3488 1) ACPICA Kernel-resident Subsystem:
3490 Updated support for the ACPI 5.0 MPST table. Fixes some problems
3491 introduced by late changes to the table as it was added to the ACPI 5.0
3492 specification. Includes header, disassembler, and data table compiler
3493 support as well as a new version of the MPST template.
3495 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
3496 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
3497 methods: _HID, _CID, and _UID.
3499 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
3500 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
3501 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
3502 names for their various drivers. Affects the AcpiGetObjectInfo external
3503 interface, and other internal interfaces as well.
3505 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
3506 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
3507 on machines that support non-aligned transfers. Optimizes for this case
3508 rather than using a strncpy. With assistance from Zheng Lv.
3510 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
3511 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
3513 Added a new debug print message for AML mutex objects that are force-
3514 released. At control method termination, any currently acquired mutex
3515 objects are force-released. Adds a new debug-only message for each one
3518 Audited/updated all ACPICA return macros and the function debug depth
3519 counter: 1) Ensure that all functions that use the various TRACE macros
3520 also use the appropriate ACPICA return macros. 2) Ensure that all normal
3521 return statements surround the return expression (value) with parens to
3522 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
3523 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
3525 Global source code changes/maintenance: All extra lines at the start and
3526 end of each source file have been removed for consistency. Also, within
3527 comments, all new sentences start with a single space instead of a double
3528 space, again for consistency across the code base.
3530 Example Code and Data Size: These are the sizes for the OS-independent
3531 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3532 debug version of the code includes the debug output trace mechanism and
3533 has a much larger code and data size.
3536 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3537 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3539 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3540 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3543 2) iASL Compiler/Disassembler and Tools:
3545 AcpiExec: Improved the algorithm used for memory leak/corruption
3546 detection. Added some intelligence to the code that maintains the global
3547 list of allocated memory. The list is now ordered by allocated memory
3548 address, significantly improving performance. When running AcpiExec on
3549 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
3550 on the platform and/or the environment. Note, this performance
3551 enhancement affects the AcpiExec utility only, not the kernel-resident
3554 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
3555 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
3556 incorrect table offset reported for invalid opcodes. Report the original
3557 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
3559 Disassembler: Enhanced the -vt option to emit the binary table data in
3560 hex format to assist with debugging.
3562 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
3563 size of file structure. Colin Ian King.
3565 ----------------------------------------
3566 13 September 2012. Summary of changes for version 20120913:
3569 1) ACPICA Kernel-resident Subsystem:
3571 ACPI 5.0: Added two new notify types for the Hardware Error Notification
3572 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
3576 Table Manager: Merged/removed duplicate code in the root table resize
3577 functions. One function is external, the other is internal. Lv Zheng,
3581 Makefiles: Completely removed the obsolete "Linux" makefiles under
3582 acpica/generate/linux. These makefiles are obsolete and have been
3585 the generic unix makefiles under acpica/generate/unix.
3587 Makefiles: Ensure that binary files always copied properly. Minor rule
3589 to ensure that the final binary output files are always copied up to the
3590 appropriate binary directory (bin32 or bin64.)
3592 Example Code and Data Size: These are the sizes for the OS-independent
3593 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3595 version of the code includes the debug output trace mechanism and has a
3597 larger code and data size.
3600 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3601 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3603 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3604 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3607 2) iASL Compiler/Disassembler and Tools:
3609 Disassembler: Fixed a possible fault during the disassembly of resource
3610 descriptors when a second parse is required because of the invocation of
3611 external control methods within the table. With assistance from
3612 adq@lidskialf.net. ACPICA BZ 976.
3614 iASL: Fixed a namepath optimization problem. An error can occur if the
3616 node that contains the namepath to be optimized does not have a parent
3618 that is a named object. This change fixes the problem.
3620 iASL: Fixed a regression where the AML file is not deleted on errors. The
3622 output file should be deleted if there are any errors during the
3625 only exception is if the -f (force output) option is used. ACPICA BZ 974.
3627 iASL: Added a feature to automatically increase internal line buffer
3629 Via realloc(), automatically increase the internal line buffer sizes as
3630 necessary to support very long source code lines. The current version of
3632 preprocessor requires a buffer long enough to contain full source code
3634 This change increases the line buffer(s) if the input lines go beyond the
3635 current buffer size. This eliminates errors that occurred when a source
3637 line was longer than the buffer.
3639 iASL: Fixed a problem with constant folding in method declarations. The
3640 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
3642 Type3 opcode was used.
3644 Debugger: Improved command help support. For incorrect argument count,
3646 full help for the command. For help command itself, allow an argument to
3649 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
3650 errors during execution of the suite. Guan Chao.
3652 ----------------------------------------
3653 16 August 2012. Summary of changes for version 20120816:
3656 1) ACPICA Kernel-resident Subsystem:
3658 Removed all use of the deprecated _GTS and _BFS predefined methods. The
3660 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
3661 deprecated and will probably be removed from the ACPI specification.
3663 does not invoke them, and reportedly never will. The final nail in the
3665 is that the ACPI specification states that these methods must be run with
3666 interrupts off, which is not going to happen in a kernel interpreter.
3668 Linux has removed all use of the methods also. It was discovered that
3669 invoking these functions caused failures on some machines, probably
3671 they were never tested since Windows does not call them. Affects two
3673 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
3676 Implemented support for complex bit-packed buffers returned from the _PLD
3677 (Physical Location of Device) predefined method. Adds a new external
3678 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
3680 structure. Note: C Bitfields cannot be used for this type of predefined
3681 structure since the memory layout of individual bitfields is not defined
3683 the C language. In addition, there are endian concerns where a compiler
3685 change the bitfield ordering based on the machine type. The new ACPICA
3686 interface eliminates these issues, and should be called after _PLD is
3687 executed. ACPICA BZ 954.
3689 Implemented a change to allow a scope change to root (via "Scope (\)")
3691 execution of module-level ASL code (code that is executed at table load
3694 Added the Windows8/Server2012 string for the _OSI method. This change
3697 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
3700 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
3702 and CSRT (Core System Resource Table).
3704 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
3705 names. This simplifies access to the buffers returned by these predefined
3706 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
3708 GPE support: Removed an extraneous parameter from the various low-level
3709 internal GPE functions. Tang Feng.
3711 Removed the linux makefiles from the unix packages. The generate/linux
3712 makefiles are obsolete and have been removed from the unix tarball
3714 packages. The replacement makefiles are under generate/unix, and there is
3716 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
3718 Updates for Unix makefiles:
3719 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
3720 2) Update linker flags (move to end of command line) for AcpiExec
3724 Split ACPICA initialization functions to new file, utxfinit.c. Split from
3725 utxface.c to improve modularity and reduce file size.
3727 Example Code and Data Size: These are the sizes for the OS-independent
3728 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3729 debug version of the code includes the debug output trace mechanism and
3731 much larger code and data size.
3734 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3735 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3737 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3738 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3741 2) iASL Compiler/Disassembler and Tools:
3743 iASL: Fixed a problem with constant folding for fixed-length constant
3744 expressions. The constant-folding code was not being invoked for constant
3745 expressions that allow the use of type 3/4/5 opcodes to generate
3747 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
3749 in the generation of invalid AML bytecode. ACPICA BZ 970.
3751 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
3752 apparently automatically emit some of the necessary externals. This
3754 handles these versions in order to eliminate generation warnings.
3756 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
3758 Disassembler: Add support to decode _PLD buffers. The decoded buffer
3760 within comments in the output file.
3762 Debugger: Fixed a regression with the "Threads" command where
3763 AE_BAD_PARAMETER was always returned.
3765 ----------------------------------------
3766 11 July 2012. Summary of changes for version 20120711:
3768 1) ACPICA Kernel-resident Subsystem:
3770 Fixed a possible fault in the return package object repair code. Fixes a
3771 problem that can occur when a lone package object is wrapped with an
3773 package object in order to force conformance to the ACPI specification.
3775 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
3779 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
3780 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
3781 ARB_DIS bit must be implemented in the host-dependent C3 processor power
3783 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
3785 Intel and other vendors. (for Intel: ICH4-M and earlier)
3787 This change removes the code to disable/enable bus master arbitration
3789 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
3791 resume problems on some machines. The change has been in use for over
3795 Implemented two new external interfaces to support host-directed dynamic
3797 table load and unload. They are intended to simplify the host
3799 of hot-plug support:
3800 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
3801 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
3803 See the ACPICA reference for additional details. Adds one new file,
3804 components/tables/tbxfload.c
3806 Implemented and deployed two new interfaces for errors and warnings that
3808 known to be caused by BIOS/firmware issues:
3809 AcpiBiosError: Prints "ACPI Firmware Error" message.
3810 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
3811 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
3813 and FADT errors. Additional deployment to be completed as appropriate in
3815 future. The associated conditional macros are ACPI_BIOS_ERROR and
3816 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
3821 Implicit notify support: ensure that no memory allocation occurs within a
3822 critical region. This fix moves a memory allocation outside of the time
3824 spinlock is held. Fixes issues on systems that do not allow this
3828 Split exception code utilities and tables into a new file,
3831 Example Code and Data Size: These are the sizes for the OS-independent
3832 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3834 version of the code includes the debug output trace mechanism and has a
3836 larger code and data size.
3839 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3840 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3842 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3843 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3846 2) iASL Compiler/Disassembler and Tools:
3848 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
3852 Debugger: Enhanced the "tables" command to emit additional information
3854 the current set of ACPI tables, including the owner ID and flags decode.
3856 Debugger: Reimplemented the "unload" command to use the new
3857 AcpiUnloadParentTable external interface. This command was disable
3859 due to need for an unload interface.
3861 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
3863 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
3865 ----------------------------------------
3866 20 June 2012. Summary of changes for version 20120620:
3869 1) ACPICA Kernel-resident Subsystem:
3871 Implemented support to expand the "implicit notify" feature to allow
3873 devices to be notified by a single GPE. This feature automatically
3875 runtime device notification in the absence of a BIOS-provided GPE control
3876 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
3878 provided by ACPICA for Windows compatibility, and is a workaround for
3881 code errors. See the description of the AcpiSetupGpeForWake interface in
3883 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
3885 Changed some comments and internal function names to simplify and ensure
3886 correctness of the Linux code translation. No functional changes.
3888 Example Code and Data Size: These are the sizes for the OS-independent
3889 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3891 version of the code includes the debug output trace mechanism and has a
3893 larger code and data size.
3896 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3897 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3899 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3900 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3903 2) iASL Compiler/Disassembler and Tools:
3905 Disassembler: Added support to emit short, commented descriptions for the
3907 predefined names in order to improve the readability of the disassembled
3908 output. ACPICA BZ 959. Changes include:
3909 1) Emit descriptions for all standard predefined names (_INI, _STA,
3912 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
3913 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
3916 AcpiSrc: Fixed several long-standing Linux code translation issues.
3918 descriptions in function headers are now translated properly to lower
3921 underscores. ACPICA BZ 961. Also fixes translation problems such as
3927 local_fADT -> local_FADT
3928 execute_oSI -> execute_OSI
3930 iASL: Fixed a problem where null bytes were inadvertently emitted into
3934 iASL: Added the existing debug options to the standard help screen. There
3936 no longer two different help screens. ACPICA BZ 957.
3938 AcpiHelp: Fixed some typos in the various predefined name descriptions.
3940 expand some of the descriptions where appropriate.
3942 iASL: Fixed the -ot option (display compile times/statistics). Was not
3944 properly for standard output; only worked for the debug file case.
3946 ----------------------------------------
3947 18 May 2012. Summary of changes for version 20120518:
3950 1) ACPICA Core Subsystem:
3952 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
3954 to block until asynchronous events such as notifies and GPEs have
3956 Within ACPICA, it is only called before a notify or GPE handler is
3957 removed/uninstalled. It also may be useful for the host OS within related
3958 drivers such as the Embedded Controller driver. See the ACPICA reference
3960 additional information. ACPICA BZ 868.
3962 ACPI Tables: Added a new error message for a possible overflow failure
3964 the conversion of FADT 32-bit legacy register addresses to internal
3967 bit GAS structure representation. The GAS has a one-byte "bit length"
3969 thus limiting the register length to 255 bits. ACPICA BZ 953.
3971 Example Code and Data Size: These are the sizes for the OS-independent
3972 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3974 version of the code includes the debug output trace mechanism and has a
3976 larger code and data size.
3979 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3980 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3982 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3983 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3986 2) iASL Compiler/Disassembler and Tools:
3988 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
3990 This keyword was added late in the ACPI 5.0 release cycle and was not
3991 implemented until now.
3993 Disassembler: Added support for Operation Region externals. Adds missing
3994 support for operation regions that are defined in another table, and
3995 referenced locally via a Field or BankField ASL operator. Now generates
3997 correct External statement.
3999 Disassembler: Several additional fixes for the External() statement
4001 related to some ASL operators. Also, order the External() statements
4002 alphabetically in the disassembler output. Fixes the External()
4005 the Create* field, Alias, and Scope operators:
4006 1) Create* buffer field operators - fix type mismatch warning on
4008 2) Alias - implement missing External support
4009 3) Scope - fix to make sure all necessary externals are emitted.
4011 iASL: Improved pathname support. For include files, merge the prefix
4013 with the file pathname and eliminate unnecessary components. Convert
4014 backslashes in all pathnames to forward slashes, for readability. Include
4016 pathname changes affect both #include and Include() type operators.
4018 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4020 of a valid line by inserting a newline and then returning the EOF during
4022 next call to GetNextLine. Prevents the line from being ignored due to EOF
4025 iASL: Implemented some changes to enhance the IDE support (-vi option.)
4027 and Warning messages are now correctly recognized for both the source
4029 browser and the global error and warning counts.
4031 ----------------------------------------
4032 20 April 2012. Summary of changes for version 20120420:
4035 1) ACPICA Core Subsystem:
4037 Implemented support for multiple notify handlers. This change adds
4040 allow multiple system and device notify handlers on Device, Thermal Zone,
4042 Processor objects. This can simplify the host OS notification
4044 Also re-worked and restructured the entire notify support code to
4046 handler installation, handler removal, notify event queuing, and notify
4047 dispatch to handler(s). Note: there can still only be two global notify
4048 handlers - one for system notifies and one for device notifies. There are
4050 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4051 Moore, Rafael Wysocki.
4053 Fixed a regression in the package repair code where the object reference
4054 count was calculated incorrectly. Regression was introduced in the commit
4055 "Support to add Package wrappers".
4057 Fixed a couple possible memory leaks in the AML parser, in the error
4059 path. Jesper Juhl, Lin Ming.
4061 Example Code and Data Size: These are the sizes for the OS-independent
4062 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4063 debug version of the code includes the debug output trace mechanism and
4065 much larger code and data size.
4068 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4069 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4071 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4072 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4075 2) iASL Compiler/Disassembler and Tools:
4077 iASL: Fixed a problem with the resource descriptor support where the
4079 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4080 included in cumulative descriptor offset, resulting in incorrect values
4082 resource tags within resource descriptors appearing after a
4084 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4086 iASL and Preprocessor: Implemented full support for the #line directive
4088 correctly track original source file line numbers through the .i
4090 output file - for error and warning messages.
4092 iASL: Expand the allowable byte constants for address space IDs.
4094 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4095 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4097 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4099 iASL: Add option to completely disable the preprocessor (-Pn).
4101 iASL: Now emit all error/warning messages to standard error (stderr) by
4102 default (instead of the previous stdout).
4104 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4106 for resource descriptor offset fix above. Update/cleanup error output
4107 routines. Enable and send iASL errors/warnings to an error logfile
4108 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4110 several extraneous "unrecognized operator" messages.
4112 ----------------------------------------
4113 20 March 2012. Summary of changes for version 20120320:
4116 1) ACPICA Core Subsystem:
4118 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4119 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4121 does not execute these methods, and therefore these methods are often
4122 untested. It has been seen on some systems where the execution of these
4123 methods causes errors and also prevents the machine from entering S5. It
4125 therefore suggested that host operating systems do not execute these
4127 by default. In the future, perhaps these methods can be optionally
4129 based on the age of the system and/or what is the newest version of
4131 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4133 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4136 Fixed a problem where the length of the local/common FADT was set too
4138 The local FADT table length cannot be set to the common length until the
4139 original length has been examined. There is code that checks the table
4141 and sets various fields appropriately. This can affect older machines
4143 early FADT versions. For example, this can cause inadvertent writes to
4145 CST_CNT register. Julian Anastasov.
4147 Fixed a mapping issue related to a physical table override. Use the
4149 mapping mechanism for tables loaded via the physical override OSL
4151 This allows for early mapping before the virtual memory manager is
4153 Thomas Renninger, Bob Moore.
4155 Enhanced the automatic return-object repair code: Repair a common problem
4157 predefined methods that are defined to return a variable-length Package
4159 sub-objects. If there is only one sub-object, some BIOS ASL code
4161 simply returns the single object instead of a Package with one sub-
4163 This new support will repair this error by wrapping a Package object
4165 the original object, creating the correct and expected Package with one
4167 object. Names that can be repaired in this manner include: _ALR, _CSD,
4169 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4172 Changed the exception code returned for invalid ACPI paths passed as
4173 parameters to external interfaces such as AcpiEvaluateObject. Was
4174 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
4176 Example Code and Data Size: These are the sizes for the OS-independent
4177 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4179 version of the code includes the debug output trace mechanism and has a
4181 larger code and data size.
4184 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4185 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4187 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4188 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4191 2) iASL Compiler/Disassembler and Tools:
4193 iASL: Added the infrastructure and initial implementation of a integrated
4195 like preprocessor. This will simplify BIOS development process by
4197 the need for a separate preprocessing step during builds. On Windows, it
4199 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4200 features including full #define() macro support are still under
4202 These preprocessor directives are supported:
4215 In addition, these new command line options are supported:
4216 -D <symbol> Define symbol for preprocessor use
4217 -li Create preprocessed output file (*.i)
4218 -P Preprocess only and create preprocessor output file (*.i)
4220 Table Compiler: Fixed a problem where the equals operator within an
4222 did not work properly.
4224 Updated iASL to use the current versions of Bison/Flex. Updated the
4226 project file to invoke these tools from the standard location. ACPICA BZ
4229 Flex for Windows: V2.5.4
4230 Bison for Windows: V2.4.1
4232 ----------------------------------------
4233 15 February 2012. Summary of changes for version 20120215:
4236 1) ACPICA Core Subsystem:
4238 There have been some major changes to the sleep/wake support code, as
4239 described below (a - e).
4241 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4242 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4243 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4245 time the _BFS method is called and the _WAK method is called. NOTE: all
4247 must update their wake/resume code or else sleep/wake will not work
4251 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4253 method. Some machines require that the GPEs are enabled before the _WAK
4255 is executed. Thomas Renninger.
4257 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4259 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4261 determine whether the system is rebooting or resuming. Matthew Garrett.
4263 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4265 match the ACPI specification requirement. Rafael Wysocki.
4267 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4268 registers within the V5 FADT. This support adds two new files:
4269 hardware/hwesleep.c implements the support for the new registers. Moved
4271 sleep/wake external interfaces to hardware/hwxfsleep.c.
4274 Added a new OSL interface for ACPI table overrides,
4275 AcpiOsPhysicalTableOverride. This interface allows the host to override a
4276 table via a physical address, instead of the logical address required by
4277 AcpiOsTableOverride. This simplifies the host implementation. Initial
4278 implementation by Thomas Renninger. The ACPICA implementation creates a
4280 shared function for table overrides that attempts both a logical and a
4283 Expanded the OSL memory read/write interfaces to 64-bit data
4284 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
4285 transfer support for GAS register structures passed to AcpiRead and
4288 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
4290 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
4292 See the ACPICA reference for details. ACPICA BZ 942. This option removes
4294 10% of the code and 5% of the static data, and the following hardware
4296 features become unavailable:
4297 PM Event and Control registers
4298 SCI interrupt (and handler)
4300 General Purpose Events (GPEs)
4303 FACS table (Waking vectors and Global Lock)
4305 Updated the unix tarball directory structure to match the ACPICA git
4307 tree. This ensures that the generic unix makefiles work properly (in
4308 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
4311 Updated the return value of the _REV predefined method to integer value 5
4313 reflect ACPI 5.0 support.
4315 Moved the external ACPI PM timer interface prototypes to the public
4317 file where they belong.
4319 Example Code and Data Size: These are the sizes for the OS-independent
4320 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4322 version of the code includes the debug output trace mechanism and has a
4324 larger code and data size.
4327 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4328 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4330 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4331 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4334 2) iASL Compiler/Disassembler and Tools:
4336 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
4337 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
4338 incorrectly displayed.
4340 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
4343 ----------------------------------------
4344 11 January 2012. Summary of changes for version 20120111:
4347 1) ACPICA Core Subsystem:
4349 Implemented a new mechanism to allow host device drivers to check for
4351 range conflicts with ACPI Operation Regions. Both SystemMemory and
4353 address spaces are supported. A new external interface,
4354 AcpiCheckAddressRange,
4355 allows drivers to check an address range against the ACPI namespace. See
4357 ACPICA reference for additional details. Adds one new file,
4358 utilities/utaddress.c. Lin Ming, Bob Moore.
4360 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
4363 Status registers, update the ACPI 5.0 flags, and update internal data
4364 structures to handle an FADT larger than 256 bytes. The size of the ACPI
4368 Updated all ACPICA copyrights and signons to 2012. Added the 2012
4370 all module headers and signons, including the standard Linux header. This
4371 affects virtually every file in the ACPICA core subsystem, iASL compiler,
4373 all ACPICA utilities.
4375 Example Code and Data Size: These are the sizes for the OS-independent
4376 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4378 version of the code includes the debug output trace mechanism and has a
4380 larger code and data size.
4383 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4384 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4386 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4387 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4390 2) iASL Compiler/Disassembler and Tools:
4392 Disassembler: fixed a problem with the automatic resource tag generation
4393 support. Fixes a problem where the resource tags are inadvertently not
4394 constructed if the table being disassembled contains external references
4396 control methods. Moved the actual construction of the tags to after the
4398 namespace is constructed (after 2nd parse is invoked due to external
4400 method references.) ACPICA BZ 941.
4402 Table Compiler: Make all "generic" operators caseless. These are the
4404 like UINT8, String, etc. Making these caseless improves ease-of-use.
4408 ----------------------------------------
4409 23 November 2011. Summary of changes for version 20111123:
4411 0) ACPI 5.0 Support:
4413 This release contains full support for the ACPI 5.0 specification, as
4416 Reduced Hardware Support:
4417 -------------------------
4419 This support allows for ACPI systems without the usual ACPI hardware.
4421 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
4423 not attempt to initialize or use any of the usual ACPI hardware. Note,
4425 this flag is set, all of the following ACPI hardware is assumed to be not
4426 present and is not initialized or accessed:
4428 General Purpose Events (GPEs)
4429 Fixed Events (PM1a/PM1b and PM Control)
4430 Power Management Timer and Console Buttons (power/sleep)
4431 Real-time Clock Alarm
4433 System Control Interrupt (SCI)
4434 The FACS is assumed to be non-existent
4439 All new tables and updates to existing tables are fully supported in the
4440 ACPICA headers (for use by device drivers), the disassembler, and the
4442 Data Table Compiler. ACPI 5.0 defines these new tables:
4444 BGRT /* Boot Graphics Resource Table */
4445 DRTM /* Dynamic Root of Trust for Measurement table */
4446 FPDT /* Firmware Performance Data Table */
4447 GTDT /* Generic Timer Description Table */
4448 MPST /* Memory Power State Table */
4449 PCCT /* Platform Communications Channel Table */
4450 PMTT /* Platform Memory Topology Table */
4451 RASF /* RAS Feature table */
4453 Operation Regions/SpaceIDs:
4454 ---------------------------
4456 All new operation regions are fully supported by the iASL compiler, the
4457 disassembler, and the ACPICA runtime code (for dispatch to region
4459 The new operation region Space IDs are:
4464 Resource Descriptors:
4465 ---------------------
4467 All new ASL resource descriptors are fully supported by the iASL
4470 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
4472 all new predefined resource tags). New descriptors are:
4481 ASL/AML Operators, New and Modified:
4482 ------------------------------------
4484 One new operator is added, the Connection operator, which is used to
4486 a GeneralPurposeIo or GenericSerialBus resource descriptor with
4488 field objects within an operation region. Several new protocols are
4490 with the AccessAs operator. All are fully supported by the iASL compiler,
4491 disassembler, and runtime ACPICA AML interpreter:
4493 Connection // Declare Field Connection
4495 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
4496 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
4498 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
4499 RawDataBuffer // Data type for Vendor Data
4502 Predefined ASL/AML Objects:
4503 ---------------------------
4505 All new predefined objects/control-methods are supported by the iASL
4507 and the ACPICA runtime validation/repair (arguments and return values.)
4509 predefined names include the following:
4511 Standard Predefined Names (Objects or Control Methods):
4512 _AEI, _CLS, _CPC, _CWS, _DEP,
4513 _DLM, _EVT, _GCP, _CRT, _GWS,
4514 _HRV, _PRE, _PSE, _SRT, _SUB.
4516 Resource Tags (Names used to access individual fields within resource
4518 _DBT, _DPL, _DRS, _END, _FLC,
4519 _IOR, _LIN, _MOD, _PAR, _PHA,
4520 _PIN, _PPI, _POL, _RXL, _SLV,
4521 _SPE, _STB, _TXL, _VEN.
4523 ACPICA External Interfaces:
4524 ---------------------------
4526 Several new interfaces have been defined for use by ACPI-related device
4527 drivers and other host OS services:
4529 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
4531 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
4532 provided by the BIOS. They are intended to be used in conjunction with
4534 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
4535 mutual exclusion with the AML code/interpreter.
4537 AcpiGetEventResources: Returns the (formatted) resource descriptors as
4539 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
4541 resource descriptors associated with hardware-reduced platform events,
4543 to the AcpiGetCurrentResources interface.
4545 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
4546 operation regions, information about the Connection() object and any
4548 length information is passed to the region handler within the Context
4551 AcpiBufferToResource: This interface converts a raw AML buffer containing
4553 resource template or resource descriptor to the ACPI_RESOURCE internal
4555 suitable for use by device drivers. Can be used by an operation region
4557 to convert the Connection() buffer object into a ACPI_RESOURCE.
4559 Miscellaneous/Tools/TestSuites:
4560 -------------------------------
4562 Support for extended _HID names (Four alpha characters instead of three).
4563 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
4564 Support for ACPI 5.0 features in the ASLTS test suite.
4565 Fully updated documentation (ACPICA and iASL reference documents.)
4567 ACPI Table Definition Language:
4568 -------------------------------
4570 Support for this language was implemented and released as a subsystem of
4572 iASL compiler in 2010. (See the iASL compiler User Guide.)
4575 Non-ACPI 5.0 changes for this release:
4576 --------------------------------------
4578 1) ACPICA Core Subsystem:
4580 Fix a problem with operation region declarations where a failure can
4583 the region name and an argument that evaluates to an object (such as the
4584 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
4587 Do not abort an ACPI table load if an invalid space ID is found within.
4589 will be caught later if the offending method is executed. ACPICA BZ 925.
4591 Fixed an issue with the FFixedHW space ID where the ID was not always
4592 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
4594 Fixed a problem with the 32-bit generation of the unix-specific OSL
4595 (osunixxf.c). Lin Ming, ACPICA BZ 936.
4597 Several changes made to enable generation with the GCC 4.6 compiler.
4601 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
4603 field registers out-of-range.
4605 2) iASL Compiler/Disassembler and Tools:
4607 iASL: Implemented the __PATH__ operator, which returns the full pathname
4609 the current source file.
4611 AcpiHelp: Automatically display expanded keyword information for all ASL
4614 Debugger: Add "Template" command to disassemble/dump resource template
4617 Added a new master script to generate and execute the ASLTS test suite.
4618 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
4620 iASL: Fix problem with listing generation during processing of the
4622 operator where AML listing was disabled until the entire Switch block was
4625 iASL: Improve support for semicolon statement terminators. Fix "invalid
4626 character" message for some cases when the semicolon is used. Semicolons
4628 now allowed after every <Term> grammar element. ACPICA BZ 927.
4630 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
4633 Disassembler: Fix problem with disassembly of the DataTableRegion
4635 where an inadvertent "Unhandled deferred opcode" message could be
4638 3) Example Code and Data Size
4640 These are the sizes for the OS-independent acpica.lib produced by the
4641 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4642 includes the debug output trace mechanism and has a much larger code and
4647 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4648 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4650 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4651 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4653 ----------------------------------------
4654 22 September 2011. Summary of changes for version 20110922:
4658 Support for ACPI 5.0 in ACPICA has been underway for several months and
4660 be released at the same time that ACPI 5.0 is officially released.
4662 The ACPI 5.0 specification is on track for release in the next few
4665 1) ACPICA Core Subsystem:
4667 Fixed a problem where the maximum sleep time for the Sleep() operator was
4668 intended to be limited to two seconds, but was inadvertently limited to
4672 Linux and Unix makefiles: Added header file dependencies to ensure
4674 generation of ACPICA core code and utilities. Also simplified the
4676 considerably through the use of the vpath variable to specify search
4680 2) iASL Compiler/Disassembler and Tools:
4682 iASL: Implemented support to check the access length for all fields
4684 access named Resource Descriptor fields. For example, if a resource field
4686 defined to be two bits, a warning is issued if a CreateXxxxField() is
4688 with an incorrect bit length. This is implemented for all current
4690 descriptor names. ACPICA BZ 930.
4692 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
4696 iASL: Fixed a couple of issues associated with variable-length package
4697 objects. 1) properly handle constants like One, Ones, Zero -- do not make
4699 VAR_PACKAGE when these are used as a package length. 2) Allow the
4701 opcode (in addition to PACKAGE) when validating object types for
4705 iASL: Emit statistics for all output files (instead of just the ASL input
4707 AML output). Includes listings, hex files, etc.
4709 iASL: Added -G option to the table compiler to allow the compilation of
4711 ACPI tables. The only part of a table that is required is the standard
4716 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
4718 which also adds correct 64-bit support. Also, now all output filenames
4720 completely lower case.
4722 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
4723 loading table files. A warning is issued for any such tables. The only
4724 exception is an FADT. This also fixes a possible fault when attempting to
4726 non-AML tables. ACPICA BZ 932.
4728 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
4730 missing table terminator could cause a fault when using the -p option.
4732 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
4735 3) Example Code and Data Size
4737 These are the sizes for the OS-independent acpica.lib produced by the
4738 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4739 includes the debug output trace mechanism and has a much larger code and
4743 Previous Release (VC 9.0):
4744 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4745 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4746 Current Release (VC 9.0):
4747 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4748 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4751 ----------------------------------------
4752 23 June 2011. Summary of changes for version 20110623:
4754 1) ACPI CA Core Subsystem:
4756 Updated the predefined name repair mechanism to not attempt repair of a
4758 return object if a _PSS object is present. We can only sort the _TSS
4760 package if there is no _PSS within the same scope. This is because if
4763 present, the ACPI specification dictates that the _TSS Power Dissipation
4765 is to be ignored, and therefore some BIOSs leave garbage values in the
4767 Power field(s). In this case, it is best to just return the _TSS package
4769 is. Reported by, and fixed with assistance from Fenghua Yu.
4771 Added an option to globally disable the control method return value
4773 and repair. This runtime option can be used to disable return value
4776 this is causing a problem on a particular machine. Also added an option
4778 AcpiExec (-dr) to set this disable flag.
4780 All makefiles and project files: Major changes to improve generation of
4782 tools. ACPICA BZ 912:
4783 Reduce default optimization levels to improve compatibility
4784 For Linux, add strict-aliasing=0 for gcc 4
4785 Cleanup and simplify use of command line defines
4786 Cleanup multithread library support
4787 Improve usage messages
4789 Linux-specific header: update handling of THREAD_ID and pthread. For the
4791 bit case, improve casting to eliminate possible warnings, especially with
4795 Example Code and Data Size: These are the sizes for the OS-independent
4796 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4798 version of the code includes the debug output trace mechanism and has a
4800 larger code and data size.
4802 Previous Release (VC 9.0):
4803 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4804 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4805 Current Release (VC 9.0):
4806 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4807 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4809 2) iASL Compiler/Disassembler and Tools:
4811 With this release, a new utility named "acpihelp" has been added to the
4813 package. This utility summarizes the ACPI specification chapters for the
4815 and AML languages. It generates under Linux/Unix as well as Windows, and
4816 provides the following functionality:
4817 Find/display ASL operator(s) -- with description and syntax.
4818 Find/display ASL keyword(s) -- with exact spelling and descriptions.
4819 Find/display ACPI predefined name(s) -- with description, number
4820 of arguments, and the return value data type.
4821 Find/display AML opcode name(s) -- with opcode, arguments, and
4823 Decode/display AML opcode -- with opcode name, arguments, and
4826 Service Layers: Make multi-thread support configurable. Conditionally
4828 the multi-thread support so that threading libraries will not be linked
4831 necessary. The only tool that requires multi-thread support is AcpiExec.
4833 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
4835 Bison appear to want the interface to yyerror to be a const char * (or at
4836 least this is a problem when generating iASL on some systems.) ACPICA BZ
4840 Tools: Fix for systems where O_BINARY is not defined. Only used for
4842 versions of the tools.
4844 ----------------------------------------
4845 27 May 2011. Summary of changes for version 20110527:
4847 1) ACPI CA Core Subsystem:
4849 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
4851 signature. Now, only allow SSDT, OEMx, and a null signature. History:
4852 1) Originally, we checked the table signature for "SSDT" or "PSDT".
4853 (PSDT is now obsolete.)
4854 2) We added support for OEMx tables, signature "OEM" plus a fourth
4855 "don't care" character.
4856 3) Valid tables were encountered with a null signature, so we just
4857 gave up on validating the signature, (05/2008).
4858 4) We encountered non-AML tables such as the MADT, which caused
4859 interpreter errors and kernel faults. So now, we once again allow
4860 only SSDT, OEMx, and now, also a null signature. (05/2011).
4862 Added the missing _TDL predefined name to the global name list in order
4864 enable validation. Affects both the core ACPICA code and the iASL
4867 Example Code and Data Size: These are the sizes for the OS-independent
4868 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4870 version of the code includes the debug output trace mechanism and has a
4872 larger code and data size.
4874 Previous Release (VC 9.0):
4875 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4876 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4877 Current Release (VC 9.0):
4878 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4879 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4881 2) iASL Compiler/Disassembler and Tools:
4883 Debugger/AcpiExec: Implemented support for "complex" method arguments on
4885 debugger command line. This adds support beyond simple integers --
4887 Strings, Buffers, and Packages. Includes support for nested packages.
4888 Increased the default command line buffer size to accommodate these
4890 See the ACPICA reference for details and syntax. ACPICA BZ 917.
4892 Debugger/AcpiExec: Implemented support for "default" method arguments for
4894 Execute/Debug command. Now, the debugger will always invoke a control
4896 with the required number of arguments -- even if the command line
4898 none or insufficient arguments. It uses default integer values for any
4900 arguments. Also fixes a bug where only six method arguments maximum were
4901 supported instead of the required seven.
4903 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
4905 also return status in order to prevent buffer overruns. See the ACPICA
4906 reference for details and syntax. ACPICA BZ 921
4908 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
4909 makefiles to simplify support for the two different but similar parser
4910 generators, bison and yacc.
4912 Updated the generic unix makefile for gcc 4. The default gcc version is
4914 expected to be 4 or greater, since options specific to gcc 4 are used.
4916 ----------------------------------------
4917 13 April 2011. Summary of changes for version 20110413:
4919 1) ACPI CA Core Subsystem:
4921 Implemented support to execute a so-called "orphan" _REG method under the
4923 device. This change will force the execution of a _REG method underneath
4926 device even if there is no corresponding operation region of type
4927 EmbeddedControl. Fixes a problem seen on some machines and apparently is
4928 compatible with Windows behavior. ACPICA BZ 875.
4930 Added more predefined methods that are eligible for automatic NULL
4932 element removal. This change adds another group of predefined names to
4935 of names that can be repaired by having NULL package elements dynamically
4936 removed. This group are those methods that return a single variable-
4938 package containing simple data types such as integers, buffers, strings.
4940 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
4943 and _TZD. ACPICA BZ 914.
4945 Split and segregated all internal global lock functions to a new file,
4948 Updated internal address SpaceID for DataTable regions. Moved this
4951 id in preparation for ACPI 5.0 changes that will include some new space
4954 change should not affect user/host code.
4956 Example Code and Data Size: These are the sizes for the OS-independent
4958 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4960 the code includes the debug output trace mechanism and has a much larger
4965 Previous Release (VC 9.0):
4966 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4967 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4968 Current Release (VC 9.0):
4969 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4970 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4972 2) iASL Compiler/Disassembler and Tools:
4974 iASL/DTC: Major update for new grammar features. Allow generic data types
4976 custom ACPI tables. Field names are now optional. Any line can be split
4978 multiple lines using the continuation char (\). Large buffers now use
4980 continuation character(s) and no colon on the continuation lines. See the
4982 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
4985 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
4987 Since the parser stuffs a "zero" as the return value for these statements
4990 the underlying AML grammar), they were seen as "return with value" by the
4992 semantic checking. They are now seen correctly as "null" return
4995 iASL: Check if a_REG declaration has a corresponding Operation Region.
4997 check for each _REG to ensure that there is in fact a corresponding
4999 region declaration in the same scope. If not, the _REG method is not very
5001 since it probably won't be executed. ACPICA BZ 915.
5003 iASL/DTC: Finish support for expression evaluation. Added a new
5006 that implements c-style operator precedence and parenthesization. ACPICA
5010 Disassembler/DTC: Remove support for () and <> style comments in data
5013 that DTC has full expression support, we don't want to have comment
5016 start with a parentheses or a less-than symbol. Now, only the standard /*
5019 comments are supported, as well as the bracket [] comments.
5021 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
5023 headers in the acpidump file. Update the header validation to support
5025 tables. Problem introduced in previous AcpiXtract version in the change
5027 support "wrong checksum" error messages emitted by acpidump utility.
5029 iASL: Add a * option to generate all template files (as a synonym for
5033 "iasl -T *" or "iasl -T ALL".
5035 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5037 abort the compiler on "fatal" errors, simply should abort the current
5039 This allows multiple compiles with a single (possibly wildcard) compiler
5042 ----------------------------------------
5043 16 March 2011. Summary of changes for version 20110316:
5045 1) ACPI CA Core Subsystem:
5047 Fixed a problem caused by a _PRW method appearing at the namespace root
5049 during the setup of wake GPEs. A fault could occur if a _PRW directly
5052 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5054 Implemented support for "spurious" Global Lock interrupts. On some
5056 global lock interrupt can occur without the pending flag being set. Upon
5059 interrupt, we now ensure that a thread is actually waiting for the lock
5061 signaling GL availability. Rafael Wysocki, Bob Moore.
5063 Example Code and Data Size: These are the sizes for the OS-independent
5065 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5067 the code includes the debug output trace mechanism and has a much larger
5072 Previous Release (VC 9.0):
5073 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5074 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5075 Current Release (VC 9.0):
5076 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5077 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5079 2) iASL Compiler/Disassembler and Tools:
5081 Implemented full support for the "SLIC" ACPI table. Includes support in
5083 header files, disassembler, table compiler, and template generator. Bob
5087 AcpiXtract: Correctly handle embedded comments and messages from
5089 Apparently some or all versions of acpidump will occasionally emit a
5092 "Wrong checksum", etc., into the dump file. This was causing problems for
5093 AcpiXtract. ACPICA BZ 905.
5095 iASL: Fix the Linux makefile by removing an inadvertent double file
5099 AcpiExec: Update installation of operation region handlers. Install one
5101 for a user-defined address space. This is used by the ASL test suite
5104 ----------------------------------------
5105 11 February 2011. Summary of changes for version 20110211:
5107 1) ACPI CA Core Subsystem:
5109 Added a mechanism to defer _REG methods for some early-installed
5111 Most user handlers should be installed before call to
5112 AcpiEnableSubsystem.
5113 However, Event handlers and region handlers should be installed after
5114 AcpiInitializeObjects. Override handlers for the "default" regions should
5116 installed early, however. This change executes all _REG methods for the
5117 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5118 chicken/egg issues between them. ACPICA BZ 848.
5120 Implemented an optimization for GPE detection. This optimization will
5122 ignore GPE registers that contain no enabled GPEs -- there is no need to
5123 read the register since this information is available internally. This
5124 becomes more important on machines with a large GPE space. ACPICA
5126 884. Lin Ming. Suggestion from Joe Liu.
5128 Removed all use of the highly unreliable FADT revision field. The
5130 number in the FADT has been found to be completely unreliable and cannot
5132 trusted. Only the actual table length can be used to infer the version.
5134 change updates the ACPICA core and the disassembler so that both no
5136 even look at the FADT version and instead depend solely upon the FADT
5139 Fix an unresolved name issue for the no-debug and no-error-message source
5140 generation cases. The _AcpiModuleName was left undefined in these cases,
5142 it is actually needed as a parameter to some interfaces. Define
5143 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5145 Split several large files (makefiles and project files updated)
5146 utglobal.c -> utdecode.c
5147 dbcomds.c -> dbmethod.c dbnames.c
5148 dsopcode.c -> dsargs.c dscontrol.c
5149 dsload.c -> dsload2.c
5150 aslanalyze.c -> aslbtypes.c aslwalks.c
5152 Example Code and Data Size: These are the sizes for the OS-independent
5153 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5154 debug version of the code includes the debug output trace mechanism and
5156 a much larger code and data size.
5158 Previous Release (VC 9.0):
5159 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5160 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5161 Current Release (VC 9.0):
5162 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5163 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5165 2) iASL Compiler/Disassembler and Tools:
5167 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5168 These are useful C-style macros with the standard definitions. ACPICA
5171 iASL/DTC: Added support for integer expressions and labels. Support for
5173 expressions for all integer fields in all ACPI tables. Support for labels
5175 "generic" portions of tables such as UEFI. See the iASL reference manual.
5177 Debugger: Added a command to display the status of global handlers. The
5178 "handlers" command will display op region, fixed event, and miscellaneous
5179 global handlers. installation status -- and for op regions, whether
5181 or user-installed handler will be used.
5183 iASL: Warn if reserved method incorrectly returns a value. Many
5185 names are defined such that they do not return a value. If implemented as
5187 method, issue a warning if such a name explicitly returns a value. ACPICA
5190 iASL: Added detection of GPE method name conflicts. Detects a conflict
5192 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5194 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5196 iASL/DTC: Fixed a couple input scanner issues with comments and line
5197 numbers. Comment remover could get confused and miss a comment ending.
5199 a problem with line counter maintenance.
5201 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5203 no need to abort on simple errors within a field definition.
5205 Debugger: Simplified the output of the help command. All help output now
5207 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5209 ----------------------------------------
5210 12 January 2011. Summary of changes for version 20110112:
5212 1) ACPI CA Core Subsystem:
5214 Fixed a race condition between method execution and namespace walks that
5216 possibly cause a fault. The problem was apparently introduced in version
5217 20100528 as a result of a performance optimization that reduces the
5220 namespace walks upon method exit by using the delete_namespace_subtree
5221 function instead of the delete_namespace_by_owner function used
5223 Bug is a missing namespace lock in the delete_namespace_subtree function.
5224 dana.myers@oracle.com
5226 Fixed several issues and a possible fault with the automatic "serialized"
5227 method support. History: This support changes a method to "serialized" on
5229 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5230 possibility that it cannot handle reentrancy. This fix repairs a couple
5232 issues seen in the field, especially on machines with many cores:
5234 1) Delete method children only upon the exit of the last thread,
5235 so as to not delete objects out from under other running threads
5236 (and possibly causing a fault.)
5237 2) Set the "serialized" bit for the method only upon the exit of the
5238 Last thread, so as to not cause deadlock when running threads
5240 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5241 so that there is no longer any confusion between the two.
5243 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5245 Debugger: Now lock the namespace for duration of a namespace dump.
5247 issues if the namespace is changing dynamically underneath the debugger.
5248 Especially affects temporary namespace nodes, since the debugger displays
5251 Updated the ordering of include files. The ACPICA headers should appear
5252 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5254 any necessary compiler-specific defines, etc. Affects the ACPI-related
5258 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5260 to all module headers and signons, including the Linux header. This
5262 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5265 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5266 project files for VC++ 6.0 are now obsolete. New project files can be
5268 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5271 Example Code and Data Size: These are the sizes for the OS-independent
5272 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5273 debug version of the code includes the debug output trace mechanism and
5275 much larger code and data size.
5277 Previous Release (VC 6.0):
5278 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5279 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5280 Current Release (VC 9.0):
5281 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5282 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5284 2) iASL Compiler/Disassembler and Tools:
5286 iASL: Added generic data types to the Data Table compiler. Add "generic"
5288 types such as UINT32, String, Unicode, etc., to simplify the generation
5290 platform-defined tables such as UEFI. Lin Ming.
5292 iASL: Added listing support for the Data Table Compiler. Adds listing
5294 (-l) to display actual binary output for each line of input code.
5296 ----------------------------------------
5297 09 December 2010. Summary of changes for version 20101209:
5299 1) ACPI CA Core Subsystem:
5301 Completed the major overhaul of the GPE support code that was begun in
5303 2010. Major features include: removal of _PRW execution in ACPICA (host
5304 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
5305 changes to existing interfaces, simplification of GPE handler operation,
5307 a handful of new interfaces:
5313 One new file, evxfgpe.c to consolidate all external GPE interfaces.
5315 See the ACPICA Programmer Reference for full details and programming
5316 information. See the new section 4.4 "General Purpose Event (GPE)
5318 for a full overview, and section 8.7 "ACPI General Purpose Event
5320 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
5322 Bob Moore, Rafael Wysocki.
5324 Implemented a new GPE feature for Windows compatibility, the "Implicit
5326 GPE Notify". This feature will automatically issue a Notify(2) on a
5328 when a Wake GPE is received if there is no corresponding GPE method or
5329 handler. ACPICA BZ 870.
5331 Fixed a problem with the Scope() operator during table parse and load
5333 During load phase (table load or method execution), the scope operator
5335 not enter the target into the namespace. Instead, it should open a new
5337 at the target location. Linux BZ 19462, ACPICA BZ 882.
5339 Example Code and Data Size: These are the sizes for the OS-independent
5340 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5341 debug version of the code includes the debug output trace mechanism and
5343 much larger code and data size.
5346 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5347 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5349 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5350 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5352 2) iASL Compiler/Disassembler and Tools:
5354 iASL: Relax the alphanumeric restriction on _CID strings. These strings
5356 "bus-specific" per the ACPI specification, and therefore any characters
5358 acceptable. The only checks that can be performed are for a null string
5360 perhaps for a leading asterisk. ACPICA BZ 886.
5362 iASL: Fixed a problem where a syntax error that caused a premature EOF
5363 condition on the source file emitted a very confusing error message. The
5364 premature EOF is now detected correctly. ACPICA BZ 891.
5366 Disassembler: Decode the AccessSize within a Generic Address Structure
5368 access, word access, etc.) Note, this field does not allow arbitrary bit
5369 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
5371 New: AcpiNames utility - Example namespace dump utility. Shows an example
5373 ACPICA configuration for a minimal namespace dump utility. Uses table and
5374 namespace managers, but no AML interpreter. Does not add any
5376 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
5377 partition and configure ACPICA. ACPICA BZ 883.
5379 AML Debugger: Increased the debugger buffer size for method return
5381 Was 4K, increased to 16K. Also enhanced error messages for debugger
5383 execution, including the buffer overflow case.
5385 ----------------------------------------
5386 13 October 2010. Summary of changes for version 20101013:
5388 1) ACPI CA Core Subsystem:
5390 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
5392 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
5393 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
5395 Changed the type of the predefined namespace object _TZ from ThermalZone
5397 Device. This was found to be confusing to the host software that
5399 the various thermal zones, since _TZ is not really a ThermalZone.
5402 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
5405 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
5406 string is "Windows 2006 SP2".
5408 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
5410 code automatically repairs _HID-related strings, this type of code is no
5411 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
5414 Example Code and Data Size: These are the sizes for the OS-independent
5415 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5416 debug version of the code includes the debug output trace mechanism and
5418 much larger code and data size.
5421 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5422 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5424 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5425 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5427 2) iASL Compiler/Disassembler and Tools:
5429 iASL: Implemented additional compile-time validation for _HID strings.
5431 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
5434 the string must be exactly seven or eight characters. For both _HID and
5436 strings, all characters must be alphanumeric. ACPICA BZ 874.
5438 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
5439 descriptors that are mostly or all zeros, with the expectation that they
5441 be filled in at runtime. iASL now allows this as long as there is a
5443 tag" (name) associated with the descriptor, which gives the ASL a handle
5444 needed to modify the descriptor. ACPICA BZ 873.
5446 Added single-thread support to the generic Unix application OSL.
5448 for iASL support, this change removes the use of semaphores in the
5450 threaded ACPICA tools/applications - increasing performance. The
5451 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
5452 option. ACPICA BZ 879.
5454 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
5456 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
5458 iASL: Moved all compiler messages to a new file, aslmessages.h.
5460 ----------------------------------------
5461 15 September 2010. Summary of changes for version 20100915:
5463 1) ACPI CA Core Subsystem:
5465 Removed the AcpiOsDerivePciId OSL interface. The various host
5467 of this function were not OS-dependent and are now obsolete and can be
5468 removed from all host OSLs. This function has been replaced by
5469 AcpiHwDerivePciId, which is now part of the ACPICA core code.
5470 AcpiHwDerivePciId has been implemented without recursion. Adds one new
5471 module, hwpci.c. ACPICA BZ 857.
5473 Implemented a dynamic repair for _HID and _CID strings. The following
5474 problems are now repaired at runtime: 1) Remove a leading asterisk in the
5475 string, and 2) the entire string is uppercased. Both repairs are in
5476 accordance with the ACPI specification and will simplify host driver
5480 The ACPI_THREAD_ID type is no longer configurable, internally it is now
5481 always UINT64. This simplifies the ACPICA code, especially any printf
5483 UINT64 is the only common data type for all thread_id types across all
5484 operating systems. It is now up to the host OSL to cast the native
5486 type to UINT64 before returning the value to ACPICA (via
5488 Lin Ming, Bob Moore.
5490 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
5492 keyword is not standard across compilers, and this type allows inline to
5494 configured on a per-compiler basis. Lin Ming.
5496 Made the system global AcpiGbl_SystemAwakeAndRunning publically
5498 Added an extern for this boolean in acpixf.h. Some hosts utilize this
5500 during suspend/restore operations. ACPICA BZ 869.
5502 All code that implements error/warning messages with the "ACPI:" prefix
5504 been moved to a new module, utxferror.c.
5506 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
5508 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
5510 Example Code and Data Size: These are the sizes for the OS-independent
5511 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5512 debug version of the code includes the debug output trace mechanism and
5514 much larger code and data size.
5517 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5518 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5520 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5521 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5523 2) iASL Compiler/Disassembler and Tools:
5525 iASL/Disassembler: Write ACPI errors to stderr instead of the output
5527 This keeps the output files free of random error messages that may
5529 from within the namespace/interpreter code. Used this opportunity to
5531 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
5532 866. Lin Ming, Bob Moore.
5534 Tools: update some printfs for ansi warnings on size_t. Handle width
5536 of size_t on 32-bit versus 64-bit generations. Lin Ming.
5538 ----------------------------------------
5539 06 August 2010. Summary of changes for version 20100806:
5541 1) ACPI CA Core Subsystem:
5543 Designed and implemented a new host interface to the _OSI support code.
5545 will allow the host to dynamically add or remove multiple _OSI strings,
5547 well as install an optional handler that is called for each _OSI
5549 Also added a new AML debugger command, 'osi' to display and modify the
5551 _OSI string table, and test support in the AcpiExec utility. See the
5553 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
5555 AcpiInstallInterface - Add an _OSI string.
5556 AcpiRemoveInterface - Delete an _OSI string.
5557 AcpiInstallInterfaceHandler - Install optional _OSI handler.
5559 AcpiOsValidateInterface - no longer used.
5561 source/components/utilities/utosi.c
5563 Re-introduced the support to enable multi-byte transfers for Embedded
5564 Controller (EC) operation regions. A reported problem was found to be a
5566 in the host OS, not in the multi-byte support. Previously, the maximum
5568 size passed to the EC operation region handler was a single byte. There
5570 often EC Fields larger than one byte that need to be transferred, and it
5572 useful for the EC driver to lock these as a single transaction. This
5574 enables single transfers larger than 8 bits. This effectively changes the
5575 access to the EC space from ByteAcc to AnyAcc, and will probably require
5576 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
5578 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
5580 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
5581 prototype in acpiosxf.h had the output value pointer as a (void *).
5582 It should be a (UINT64 *). This may affect some host OSL code.
5584 Fixed a couple problems with the recently modified Linux makefiles for
5586 and AcpiExec. These new makefiles place the generated object files in the
5587 local directory so that there can be no collisions between the files that
5589 shared between them that are compiled with different options.
5591 Example Code and Data Size: These are the sizes for the OS-independent
5592 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5593 debug version of the code includes the debug output trace mechanism and
5595 much larger code and data size.
5598 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5599 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5601 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5602 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5604 2) iASL Compiler/Disassembler and Tools:
5606 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
5608 namespace from and disassemble an entire group of AML files. Useful for
5609 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
5611 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
5613 iASL: Allow multiple invocations of -e option. This change allows
5615 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
5619 ----------------------------------------
5620 02 July 2010. Summary of changes for version 20100702:
5622 1) ACPI CA Core Subsystem:
5624 Implemented several updates to the recently added GPE reference count
5625 support. The model for "wake" GPEs is changing to give the host OS
5627 control of these GPEs. Eventually, the ACPICA core will not execute any
5629 methods, since the host already must execute them. Also, additional
5631 were made to help ensure that the reference counts are kept in proper
5632 synchronization with reality. Rafael J. Wysocki.
5634 1) Ensure that GPEs are not enabled twice during initialization.
5635 2) Ensure that GPE enable masks stay in sync with the reference count.
5636 3) Do not inadvertently enable GPEs when writing GPE registers.
5637 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
5638 interface. This interface will set or clear individual GPEs for wakeup.
5639 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
5641 are now used for "runtime" GPEs only.
5643 Changed the behavior of the GPE install/remove handler interfaces. The
5646 no longer disabled during this process, as it was found to cause problems
5648 some machines. Rafael J. Wysocki.
5650 Reverted a change introduced in version 20100528 to enable Embedded
5651 Controller multi-byte transfers. This change was found to cause problems
5653 Index Fields and possibly Bank Fields. It will be reintroduced when these
5654 problems have been resolved.
5656 Fixed a problem with references to Alias objects within Package Objects.
5658 reference to an Alias within the definition of a Package was not always
5659 resolved properly. Aliases to objects like Processors, Thermal zones,
5661 were resolved to the actual object instead of a reference to the object
5664 should be. Package objects are only allowed to contain integer, string,
5665 buffer, package, and reference objects. Redhat bugzilla 608648.
5667 Example Code and Data Size: These are the sizes for the OS-independent
5668 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5669 debug version of the code includes the debug output trace mechanism and
5671 much larger code and data size.
5674 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5675 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5677 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5678 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5680 2) iASL Compiler/Disassembler and Tools:
5682 iASL: Implemented a new compiler subsystem to allow definition and
5683 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
5685 are called "ACPI Data Tables", and the new compiler is the "Data Table
5686 Compiler". This compiler is intended to simplify the existing error-prone
5687 process of creating these tables for the BIOS, as well as allowing the
5688 disassembly, modification, recompilation, and override of existing ACPI
5690 tables. See the iASL User Guide for detailed information.
5692 iASL: Implemented a new Template Generator option in support of the new
5694 Table Compiler. This option will create examples of all known ACPI tables
5695 that can be used as the basis for table development. See the iASL
5696 documentation and the -T option.
5698 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
5701 Updated the Linux makefiles for iASL and AcpiExec to place the generated
5702 object files in the local directory so that there can be no collisions
5703 between the shared files between them that are generated with different
5706 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
5708 the #define __APPLE__ to enable this support.
5710 ----------------------------------------
5711 28 May 2010. Summary of changes for version 20100528:
5713 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
5714 available at www.acpi.info. This is primarily an errata release.
5716 1) ACPI CA Core Subsystem:
5718 Undefined ACPI tables: We are looking for the definitions for the
5720 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
5722 Implemented support to enable multi-byte transfers for Embedded
5724 (EC) operation regions. Previously, the maximum data size passed to the
5726 operation region handler was a single byte. There are often EC Fields
5728 than one byte that need to be transferred, and it is useful for the EC
5730 to lock these as a single transaction. This change enables single
5732 larger than 8 bits. This effectively changes the access to the EC space
5734 ByteAcc to AnyAcc, and will probably require changes to the host OS
5736 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
5738 transfers. Alexey Starikovskiy, Lin Ming
5740 Implemented a performance enhancement for namespace search and access.
5742 change enhances the performance of namespace searches and walks by adding
5744 backpointer to the parent in each namespace node. On large namespaces,
5746 change can improve overall ACPI performance by up to 9X. Adding a pointer
5748 each namespace node increases the overall size of the internal namespace
5750 about 5%, since each namespace entry usually consists of both a namespace
5751 node and an ACPI operand object. However, this is the first growth of the
5752 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
5754 Implemented a performance optimization that reduces the number of
5756 walks. On control method exit, only walk the namespace if the method is
5758 to have created namespace objects outside of its local scope. Previously,
5760 entire namespace was traversed on each control method exit. This change
5762 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
5765 Added support to truncate I/O addresses to 16 bits for Windows
5767 Some ASL code has been seen in the field that inadvertently has bits set
5768 above bit 15. This feature is optional and is enabled if the BIOS
5770 any Windows OSI strings. It can also be enabled by the host OS. Matthew
5773 Added support to limit the maximum time for the ASL Sleep() operator. To
5774 prevent accidental deep sleeps, limit the maximum time that Sleep() will
5775 actually sleep. Configurable, the default maximum is two seconds. ACPICA
5778 Added run-time validation support for the _WDG and_WED Microsoft
5780 methods. These objects are defined by "Windows Instrumentation", and are
5782 part of the ACPI spec. ACPICA BZ 860.
5784 Expanded all statistic counters used during namespace and device
5785 initialization from 16 to 32 bits in order to support very large
5788 Replaced all instances of %d in printf format specifiers with %u since
5790 all integers in ACPICA are unsigned.
5792 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
5796 Example Code and Data Size: These are the sizes for the OS-independent
5797 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5798 debug version of the code includes the debug output trace mechanism and
5800 much larger code and data size.
5803 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5804 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5806 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5807 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5809 2) iASL Compiler/Disassembler and Tools:
5811 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
5812 methods. These objects are defined by "Windows Instrumentation", and are
5814 part of the ACPI spec. ACPICA BZ 860.
5816 AcpiExec: added option to disable the memory tracking mechanism. The -dt
5817 option will disable the tracking mechanism, which improves performance
5820 AcpiExec: Restructured the command line options into -d (disable) and -e
5823 ----------------------------------------
5824 28 April 2010. Summary of changes for version 20100428:
5826 1) ACPI CA Core Subsystem:
5828 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
5829 including FADT-based and GPE Block Devices, execute any _PRW methods in
5831 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
5832 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
5833 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
5834 Devices. Provides compatibility with other ACPI implementations. Two new
5835 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
5838 Fixed a regression introduced in version 20100331 within the table
5840 where initial table loading could fail. This was introduced in the fix
5842 AcpiReallocateRootTable. Also, renamed some of fields in the table
5844 data structures to clarify their meaning and use.
5846 Fixed a possible allocation overrun during internal object copy in
5847 AcpiUtCopySimpleObject. The original code did not correctly handle the
5849 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
5852 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
5853 possible access beyond end-of-allocation. Also, now fully validate
5855 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
5857 Example Code and Data Size: These are the sizes for the OS-independent
5858 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5859 debug version of the code includes the debug output trace mechanism and
5861 much larger code and data size.
5864 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5865 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5867 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5868 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5870 2) iASL Compiler/Disassembler and Tools:
5872 iASL: Implemented Min/Max/Len/Gran validation for address resource
5873 descriptors. This change implements validation for the address fields
5875 are common to all address-type resource descriptors. These checks are
5876 implemented: Checks for valid Min/Max, length within the Min/Max window,
5877 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
5879 table 6-40 in the ACPI 4.0a specification. Also split the large
5881 and aslrestype2.c files into five new files. ACPICA BZ 840.
5883 iASL: Added support for the _Wxx predefined names. This support was
5885 and these names were not recognized by the compiler as valid predefined
5886 names. ACPICA BZ 851.
5888 iASL: Added an error for all predefined names that are defined to return
5890 value and thus must be implemented as Control Methods. These include all
5892 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
5893 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
5895 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
5897 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
5899 dynamically loaded via the Load() operator. Also cleaned up output for
5902 ta and -tc options. ACPICA BZ 853.
5904 Tests: Added a new file with examples of extended iASL error checking.
5905 Demonstrates the advanced error checking ability of the iASL compiler.
5906 Available at tests/misc/badcode.asl.
5908 ----------------------------------------
5909 31 March 2010. Summary of changes for version 20100331:
5911 1) ACPI CA Core Subsystem:
5913 Completed a major update for the GPE support in order to improve support
5915 shared GPEs and to simplify both host OS and ACPICA code. Added a
5917 count mechanism to support shared GPEs that require multiple device
5919 Several external interfaces have changed. One external interface has been
5920 removed. One new external interface was added. Most of the GPE external
5921 interfaces now use the GPE spinlock instead of the events mutex (and the
5922 Flags parameter for many GPE interfaces has been removed.) See the
5924 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
5926 Wysocki. ACPICA BZ 831.
5929 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
5935 Implemented write support for DataTable operation regions. These regions
5937 defined via the DataTableRegion() operator. Previously, only read support
5939 implemented. The ACPI specification allows DataTableRegions to be
5943 Implemented a new subsystem option to force a copy of the DSDT to local
5944 memory. Optionally copy the entire DSDT to local memory (instead of
5946 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
5948 the original DSDT, creating the need for this option. Default is FALSE,
5952 Implemented detection of a corrupted or replaced DSDT. This change adds
5953 support to detect a DSDT that has been corrupted and/or replaced from
5955 the OS (by firmware). This is typically catastrophic for the system, but
5957 been seen on some machines. Once this problem has been detected, the DSDT
5958 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
5960 Fixed two problems with AcpiReallocateRootTable during the root table
5962 When copying the root table to the new allocation, the length used was
5963 incorrect. The new size was used instead of the current table size,
5965 too much data was copied. Also, the count of available slots for ACPI
5967 was not set correctly. Alexey Starikovskiy, Bob Moore.
5969 Example Code and Data Size: These are the sizes for the OS-independent
5970 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5971 debug version of the code includes the debug output trace mechanism and
5973 much larger code and data size.
5976 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5977 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5979 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5980 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5982 2) iASL Compiler/Disassembler and Tools:
5984 iASL: Implement limited typechecking for values returned from predefined
5985 control methods. The type of any returned static (unnamed) object is now
5986 validated. For example, Return(1). ACPICA BZ 786.
5988 iASL: Fixed a predefined name object verification regression. Fixes a
5990 introduced in version 20100304. An error is incorrectly generated if a
5991 predefined name is declared as a static named object with a value defined
5992 using the keywords "Zero", "One", or "Ones". Lin Ming.
5994 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
5996 reducing the requested registry access rights. ACPICA BZ 842.
5998 Disassembler: fixed a possible fault when generating External()
6000 Introduced in commit ae7d6fd: Properly handle externals with parent-
6002 (carat). Fixes a string length allocation calculation. Lin Ming.
6004 ----------------------------------------
6005 04 March 2010. Summary of changes for version 20100304:
6007 1) ACPI CA Core Subsystem:
6009 Fixed a possible problem with the AML Mutex handling function
6010 AcpiExReleaseMutex where the function could fault under the very rare
6011 condition when the interpreter has blocked, the interpreter lock is
6013 the interpreter is then reentered via the same thread, and attempts to
6014 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6018 Implemented additional configuration support for the AML "Debug Object".
6019 Output from the debug object can now be enabled via a global variable,
6020 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6022 This debug output is now available in the release version of ACPICA
6024 of just the debug version. Also, the entire debug output module can now
6026 configured out of the ACPICA build if desired. One new file added,
6027 executer/exdebug.c. Lin Ming, Bob Moore.
6029 Added header support for the ACPI MCHI table (Management Controller Host
6030 Interface Table). This table was added in ACPI 4.0, but the defining
6032 has only recently become available.
6034 Standardized output of integer values for ACPICA warnings/errors. Always
6036 0x prefix for hex output, always use %u for unsigned integer decimal
6038 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6040 invocations.) These invocations were converted from the original
6041 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6043 Example Code and Data Size: These are the sizes for the OS-independent
6044 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6045 debug version of the code includes the debug output trace mechanism and
6047 much larger code and data size.
6050 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6051 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6053 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6054 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6056 2) iASL Compiler/Disassembler and Tools:
6058 iASL: Implemented typechecking support for static (non-control method)
6059 predefined named objects that are declared with the Name() operator. For
6060 example, the type of this object is now validated to be of type Integer:
6061 Name(_BBN, 1). This change migrates the compiler to using the core
6063 name table instead of maintaining a local version. Added a new file,
6064 aslpredef.c. ACPICA BZ 832.
6066 Disassembler: Added support for the ACPI 4.0 MCHI table.
6068 ----------------------------------------
6069 21 January 2010. Summary of changes for version 20100121:
6071 1) ACPI CA Core Subsystem:
6073 Added the 2010 copyright to all module headers and signons. This affects
6074 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6075 tools/utilities, and the test suites.
6077 Implemented a change to the AcpiGetDevices interface to eliminate
6079 invocations of the _STA method. In the case where a specific _HID is
6080 requested, do not run _STA until a _HID match is found. This eliminates
6081 potentially dozens of _STA calls during a search for a particular
6083 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6085 Implemented an additional repair for predefined method return values.
6087 to repair unexpected NULL elements within returned Package objects.
6090 Integer of value zero, a NULL String, or a zero-length Buffer as
6092 ACPICA BZ 818. Lin Ming, Bob Moore.
6094 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6096 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6098 64-bit AML integers). It is now obsolete and this change removes it from
6100 ACPICA code base, replaced by UINT64. The original typedef has been
6102 for now for compatibility with existing device driver code. ACPICA BZ
6105 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6107 the parse tree object.
6109 Added additional warning options for the gcc-4 generation. Updated the
6111 accordingly. This includes some code restructuring to eliminate
6113 code, elimination of some gotos, elimination of unused return values,
6115 additional casting, and removal of redundant declarations.
6117 Example Code and Data Size: These are the sizes for the OS-independent
6118 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6119 debug version of the code includes the debug output trace mechanism and
6121 much larger code and data size.
6124 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6125 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6127 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6128 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6130 2) iASL Compiler/Disassembler and Tools:
6132 No functional changes for this release.
6134 ----------------------------------------
6135 14 December 2009. Summary of changes for version 20091214:
6137 1) ACPI CA Core Subsystem:
6139 Enhanced automatic data type conversions for predefined name repairs.
6141 change expands the automatic repairs/conversions for predefined name
6143 values to make Integers, Strings, and Buffers fully interchangeable.
6146 Buffer can be converted to a Package of Integers if necessary. The
6148 module was completely restructured. Lin Ming, Bob Moore.
6150 Implemented automatic removal of null package elements during predefined
6152 repairs. This change will automatically remove embedded and trailing NULL
6153 package elements from returned package objects that are defined to
6156 variable number of sub-packages. The driver is then presented with a
6158 with no null elements to deal with. ACPICA BZ 819.
6160 Implemented a repair for the predefined _FDE and _GTM names. The expected
6161 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6163 possible problems (both seen in the field), where a package of integers
6165 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6168 Implemented additional module-level code support. This change will
6170 execute module-level code that is not at the root of the namespace (under
6172 Device object, etc.). Now executes the code within the current scope
6174 of the root. ACPICA BZ 762. Lin Ming.
6176 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6178 problem where mutex errors can occur when running a _REG method that is
6180 the same scope as a method-defined operation region or an operation
6182 under a module-level IF block. This type of code is rare, so the problem
6184 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6186 Fixed a possible memory leak during module-level code execution. An
6188 could be leaked for each block of executed module-level code if the
6189 interpreter slack mode is enabled This change deletes any implicitly
6191 object from the module-level code block. Lin Ming.
6193 Removed messages for successful predefined repair(s). The repair
6195 was considered too wordy. Now, messages are only unconditionally emitted
6197 the return object cannot be repaired. Existing messages for successful
6198 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6201 Example Code and Data Size: These are the sizes for the OS-independent
6202 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6203 debug version of the code includes the debug output trace mechanism and
6205 much larger code and data size.
6208 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6209 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6211 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6212 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6214 2) iASL Compiler/Disassembler and Tools:
6216 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6218 were no longer automatically removed at the termination of the compile.
6220 acpiexec: Implemented the -f option to specify default region fill value.
6221 This option specifies the value used to initialize buffers that simulate
6222 operation regions. Default value is zero. Useful for debugging problems
6224 depend on a specific initial value for a region or field.
6226 ----------------------------------------
6227 12 November 2009. Summary of changes for version 20091112:
6229 1) ACPI CA Core Subsystem:
6231 Implemented a post-order callback to AcpiWalkNamespace. The existing
6232 interface only has a pre-order callback. This change adds an additional
6233 parameter for a post-order callback which will be more useful for bus
6235 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6237 Modified the behavior of the operation region memory mapping cache for
6238 SystemMemory. Ensure that the memory mappings created for operation
6240 do not cross 4K page boundaries. Crossing a page boundary while mapping
6241 regions can cause kernel warnings on some hosts if the pages have
6243 attributes. Such regions are probably BIOS bugs, and this is the
6245 Linux BZ 14445. Lin Ming.
6247 Implemented an automatic repair for predefined methods that must return
6248 sorted lists. This change will repair (by sorting) packages returned by
6250 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6252 and do not contain NULL package elements. Adds one new file,
6253 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6255 Fixed a possible fault during predefined name validation if a return
6257 object contains NULL elements. Also adds a warning if a NULL element is
6258 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6260 include repair or removal of all such NULL elements where possible.
6262 Implemented additional module-level executable AML code support. This
6264 will execute module-level code that is not at the root of the namespace
6265 (under a Device object, etc.) at table load time. Module-level executable
6267 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6269 Implemented a new internal function to create Integer objects. This
6271 simplifies miscellaneous object creation code. ACPICA BZ 823.
6273 Reduced the severity of predefined repair messages, Warning to Info.
6275 the object was successfully repaired, a warning is too severe. Reduced to
6277 info message for now. These messages may eventually be changed to debug-
6281 Example Code and Data Size: These are the sizes for the OS-independent
6282 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6283 debug version of the code includes the debug output trace mechanism and
6285 much larger code and data size.
6288 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6289 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6291 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6292 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6294 2) iASL Compiler/Disassembler and Tools:
6296 iASL: Implemented Switch() with While(1) so that Break works correctly.
6298 change correctly implements the Switch operator with a surrounding
6300 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
6302 iASL: Added a message if a package initializer list is shorter than
6304 length. Adds a new remark for a Package() declaration if an initializer
6306 exists, but is shorter than the declared length of the package. Although
6307 technically legal, this is probably a coding error and it is seen in the
6308 field. ACPICA BZ 815. Lin Ming, Bob Moore.
6310 iASL: Fixed a problem where the compiler could fault after the maximum
6312 of errors was reached (200).
6314 acpixtract: Fixed a possible warning for pointer cast if the compiler
6316 level set very high.
6318 ----------------------------------------
6319 13 October 2009. Summary of changes for version 20091013:
6321 1) ACPI CA Core Subsystem:
6323 Fixed a problem where an Operation Region _REG method could be executed
6325 than once. If a custom address space handler is installed by the host
6327 the "initialize operation regions" phase of the ACPICA initialization,
6329 _REG methods for that address space could be executed twice. This change
6330 fixes the problem. ACPICA BZ 427. Lin Ming.
6332 Fixed a possible memory leak for the Scope() ASL operator. When the exact
6333 invocation of "Scope(\)" is executed (change scope to root), one internal
6334 operand object was leaked. Lin Ming.
6336 Implemented a run-time repair for the _MAT predefined method. If the _MAT
6337 return value is defined as a Field object in the AML, and the field
6338 size is less than or equal to the default width of an integer (32 or
6340 can incorrectly return an Integer instead of a Buffer. ACPICA now
6341 automatically repairs this problem. ACPICA BZ 810.
6343 Implemented a run-time repair for the _BIF and _BIX predefined methods.
6345 "OEM Information" field is often incorrectly returned as an Integer with
6346 value zero if the field is not supported by the platform. This is due to
6348 ambiguity in the ACPI specification. The field should always be a string.
6349 ACPICA now automatically repairs this problem by returning a NULL string
6350 within the returned Package. ACPICA BZ 807.
6352 Example Code and Data Size: These are the sizes for the OS-independent
6353 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6354 debug version of the code includes the debug output trace mechanism and
6356 much larger code and data size.
6359 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6360 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6362 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6363 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6365 2) iASL Compiler/Disassembler and Tools:
6367 Disassembler: Fixed a problem where references to external symbols that
6368 contained one or more parent-prefixes (carats) were not handled
6370 possibly causing a fault. ACPICA BZ 806. Lin Ming.
6372 Disassembler: Restructured the code so that all functions that handle
6373 external symbols are in a single module. One new file is added,
6376 AML Debugger: Added a max count argument for the Batch command (which
6377 executes multiple predefined methods within the namespace.)
6379 iASL: Updated the compiler documentation (User Reference.) Available at
6380 http://www.acpica.org/documentation/. ACPICA BZ 750.
6382 AcpiXtract: Updated for Lint and other formatting changes. Close all open
6385 ----------------------------------------
6386 03 September 2009. Summary of changes for version 20090903:
6388 1) ACPI CA Core Subsystem:
6390 For Windows Vista compatibility, added the automatic execution of an _INI
6391 method located at the namespace root (\_INI). This method is executed at
6392 table load time. This support is in addition to the automatic execution
6394 \_SB._INI. Lin Ming.
6396 Fixed a possible memory leak in the interpreter for AML package objects
6398 the package initializer list is longer than the defined size of the
6400 This apparently can only happen if the BIOS changes the package size on
6402 fly (seen in a _PSS object), as ASL compilers do not allow this. The
6403 interpreter will truncate the package to the defined size (and issue an
6405 message), but previously could leave the extra objects undeleted if they
6407 pre-created during the argument processing (such is the case if the
6409 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
6411 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
6412 This has been reported in the field. Previously, ACPICA would zero out
6414 buffer/string. Now, the operation is treated as a noop. Provides Windows
6415 compatibility. ACPICA BZ 803. Lin Ming.
6417 Removed an extraneous error message for ASL constructs of the form
6418 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
6420 are seen in many BIOSs and are once again treated as NOOPs and no error
6422 emitted when they are encountered. ACPICA BZ 785.
6424 Fixed an extraneous warning message if a _DSM reserved method returns a
6425 Package object. _DSM can return any type of object, so validation on the
6426 return type cannot be performed. ACPICA BZ 802.
6428 Example Code and Data Size: These are the sizes for the OS-independent
6429 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6430 debug version of the code includes the debug output trace mechanism and
6432 much larger code and data size.
6435 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6436 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6438 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6439 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6441 2) iASL Compiler/Disassembler and Tools:
6443 iASL: Fixed a problem with the use of the Alias operator and Resource
6444 Templates. The correct alias is now constructed and no error is emitted.
6447 iASL: Implemented the -I option to specify additional search directories
6449 include files. Allows multiple additional search paths for include files.
6450 Directories are searched in the order specified on the command line
6452 the local directory is searched.) ACPICA BZ 800.
6454 iASL: Fixed a problem where the full pathname for include files was not
6455 emitted for warnings/errors. This caused the IDE support to not work
6456 properly. ACPICA BZ 765.
6458 iASL: Implemented the -@ option to specify a Windows-style response file
6459 containing additional command line options. ACPICA BZ 801.
6461 AcpiExec: Added support to load multiple AML files simultaneously (such
6464 DSDT and multiple SSDTs). Also added support for wildcards within the AML
6465 pathname. These features allow all machine tables to be easily loaded and
6466 debugged together. ACPICA BZ 804.
6468 Disassembler: Added missing support for disassembly of HEST table Error
6472 ----------------------------------------
6473 30 July 2009. Summary of changes for version 20090730:
6475 The ACPI 4.0 implementation for ACPICA is complete with this release.
6477 1) ACPI CA Core Subsystem:
6479 ACPI 4.0: Added header file support for all new and changed ACPI tables.
6480 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
6482 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
6484 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
6486 have been some ACPI 4.0 changes to other existing tables. Split the large
6487 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
6489 ACPI 4.0: Implemented predefined name validation for all new names. There
6491 31 new names in ACPI 4.0. The predefined validation module was split into
6493 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
6495 Implemented support for so-called "module-level executable code". This is
6496 executable AML code that exists outside of any control method and is
6498 to be executed at table load time. Although illegal since ACPI 2.0, this
6500 of code still exists and is apparently still being created. Blocks of
6502 code are now detected and executed as intended. Currently, the code
6504 must exist under either an If, Else, or While construct; these are the
6505 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
6507 Implemented an automatic dynamic repair for predefined names that return
6508 nested Package objects. This applies to predefined names that are defined
6510 return a variable-length Package of sub-packages. If the number of sub-
6511 packages is one, BIOS code is occasionally seen that creates a simple
6513 package with no sub-packages. This code attempts to fix the problem by
6514 wrapping a new package object around the existing package. These methods
6516 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
6520 Fixed a regression introduced in 20090625 for the AcpiGetDevices
6522 The _HID/_CID matching was broken and no longer matched IDs correctly.
6526 Fixed a problem with AcpiReset where the reset would silently fail if the
6527 register was one of the protected I/O ports. AcpiReset now bypasses the
6529 validation mechanism. This may eventually be driven into the
6533 Fixed a regression related to the recent update of the AcpiRead/Write
6534 interfaces. A sleep/suspend could fail if the optional PM2 Control
6536 does not exist during an attempt to write the Bus Master Arbitration bit.
6537 (However, some hosts already delete the code that writes this bit, and
6539 code may in fact be obsolete at this date.) ACPICA BZ 799.
6541 Fixed a problem where AcpiTerminate could fault if inadvertently called
6543 in succession. ACPICA BZ 795.
6545 Example Code and Data Size: These are the sizes for the OS-independent
6546 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6547 debug version of the code includes the debug output trace mechanism and
6549 much larger code and data size.
6552 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6553 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6555 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6556 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6558 2) iASL Compiler/Disassembler and Tools:
6560 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
6561 changes to existing tables. ACPICA BZ 775.
6563 ----------------------------------------
6564 25 June 2009. Summary of changes for version 20090625:
6566 The ACPI 4.0 Specification was released on June 16 and is available at
6567 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
6568 continue for the next few releases.
6570 1) ACPI CA Core Subsystem:
6572 ACPI 4.0: Implemented interpreter support for the IPMI operation region
6573 address space. Includes support for bi-directional data buffers and an
6575 address space handler (to be installed by an IPMI device driver.) ACPICA
6579 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
6581 support in both the header files and the disassembler.
6583 Completed a major update for the AcpiGetObjectInfo external interface.
6585 - Support for variable, unlimited length HID, UID, and CID strings.
6586 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
6588 - Call the _SxW power methods on behalf of a device object.
6589 - Determine if a device is a PCI root bridge.
6590 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
6591 These changes will require an update to all callers of this interface.
6593 the updated ACPICA Programmer Reference for details. One new source file
6595 been added - utilities/utids.c. ACPICA BZ 368, 780.
6597 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
6598 transfers. The Value parameter has been extended from 32 bits to 64 bits
6600 order to support new ACPI 4.0 tables. These changes will require an
6603 all callers of these interfaces. See the ACPICA Programmer Reference for
6604 details. ACPICA BZ 768.
6606 Fixed several problems with AcpiAttachData. The handler was not invoked
6608 the host node was deleted. The data sub-object was not automatically
6610 when the host node was deleted. The interface to the handler had an
6612 parameter, this was removed. ACPICA BZ 778.
6614 Enhanced the function that dumps ACPI table headers. All non-printable
6615 characters in the string fields are now replaced with '?' (Signature,
6617 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
6618 these fields are occasionally seen in the field. ACPICA BZ 788.
6620 Fixed a problem with predefined method repair code where the code that
6621 attempts to repair/convert an object of incorrect type is only executed
6623 the first time the predefined method is called. The mechanism that
6625 warnings on subsequent calls was interfering with the repair mechanism.
6628 Fixed a possible memory leak in the predefined validation/repair code
6631 buffer is automatically converted to an expected string object.
6633 Removed obsolete 16-bit files from the distribution and from the current
6635 tree head. ACPICA BZ 776.
6637 Example Code and Data Size: These are the sizes for the OS-independent
6638 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6639 debug version of the code includes the debug output trace mechanism and
6641 much larger code and data size.
6644 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6645 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6647 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6648 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6650 2) iASL Compiler/Disassembler and Tools:
6652 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
6653 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
6655 ACPI 4.0: iASL - implemented compile-time validation support for all new
6656 predefined names and control methods (31 total). ACPICA BZ 769.
6658 ----------------------------------------
6659 21 May 2009. Summary of changes for version 20090521:
6661 1) ACPI CA Core Subsystem:
6663 Disabled the preservation of the SCI enable bit in the PM1 control
6665 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
6668 a "preserved" bit - "OSPM always preserves this bit position", section
6669 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
6670 because the bit needs to be explicitly set by the OS as a workaround. No
6671 machines fail if the bit is not preserved. Therefore, ACPICA no longer
6672 attempts to preserve this bit.
6674 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
6675 incorrectly formed _PRT package could cause a fault. Added validation to
6676 ensure that each package element is actually a sub-package.
6678 Implemented a new interface to install or override a single control
6680 AcpiInstallMethod. This interface is useful when debugging in order to
6682 an existing method or to install a missing method without having to
6684 the entire ACPI table. See the ACPICA Programmer Reference for use and
6685 examples. Lin Ming, Bob Moore.
6687 Fixed several reference count issues with the DdbHandle object that is
6688 created from a Load or LoadTable operator. Prevent premature deletion of
6690 object. Also, mark the object as invalid once the table has been
6692 This is needed because the handle itself may not be deleted after the
6694 unload, depending on whether it has been stored in a named object by the
6697 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
6698 mutexes of the same sync level are acquired but then not released in
6700 opposite order, the internally maintained Current Sync Level becomes
6702 and can cause subsequent execution errors. ACPICA BZ 471.
6704 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
6705 specification has been changed to make the SyncLevel for mutex objects
6707 useful. When releasing a mutex, the SyncLevel of the mutex must now be
6709 same as the current sync level. This makes more sense than the previous
6711 (SyncLevel less than or equal). This change updates the code to match the
6714 Fixed a problem with the local version of the AcpiOsPurgeCache function.
6716 (local) cache must be locked during all cache object deletions. Andrew
6719 Updated the Load operator to use operation region interfaces. This
6721 direct memory mapping with region access calls. Now, all region accesses
6723 through the installed region handler as they should.
6725 Simplified and optimized the NsGetNextNode function. Reduced parameter
6727 and reduced code for this frequently used function.
6729 Example Code and Data Size: These are the sizes for the OS-independent
6730 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6731 debug version of the code includes the debug output trace mechanism and
6733 much larger code and data size.
6736 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6737 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6739 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6740 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6742 2) iASL Compiler/Disassembler and Tools:
6744 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
6746 with sub-table disassembly and handling invalid sub-tables. Attempt
6748 after an invalid sub-table ID.
6750 ----------------------------------------
6751 22 April 2009. Summary of changes for version 20090422:
6753 1) ACPI CA Core Subsystem:
6755 Fixed a compatibility issue with the recently released I/O port
6757 mechanism. For windows compatibility, 1) On a port protection violation,
6758 simply ignore the request and do not return an exception (allow the
6760 method to continue execution.) 2) If only part of the request overlaps a
6761 protected port, read/write the individual ports that are not protected.
6765 Enhanced the execution of the ASL/AML BreakPoint operator so that it
6767 breaks into the AML debugger if the debugger is present. This matches the
6768 ACPI-defined behavior.
6770 Fixed several possible warnings related to the use of the configurable
6771 ACPI_THREAD_ID. This type can now be configured as either an integer or a
6772 pointer with no warnings. Also fixes several warnings in printf-like
6773 statements for the 64-bit build when the type is configured as a pointer.
6776 Fixed a number of possible warnings when compiling with gcc 4+ (depending
6778 warning options.) Examples include printf formats, aliasing, unused
6780 missing prototypes, missing switch default statements, use of non-ANSI
6781 library functions, use of non-ANSI constructs. See generate/unix/Makefile
6783 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
6785 Example Code and Data Size: These are the sizes for the OS-independent
6786 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6787 debug version of the code includes the debug output trace mechanism and
6789 much larger code and data size.
6792 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6793 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6795 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6796 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6798 2) iASL Compiler/Disassembler and Tools:
6800 iASL: Fixed a generation warning from Bison 2.3 and fixed several
6805 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
6807 correctly digest Windows/DOS formatted files (with CR/LF).
6809 iASL: Added a new option for "quiet mode" (-va) that produces only the
6810 compilation summary, not individual errors and warnings. Useful for large
6813 AcpiExec: Implemented a new option (-z) to enable a forced
6815 timeout that can be used to detect hang conditions during execution of
6817 code (includes both internal semaphores and AML-defined mutexes and
6820 Added new makefiles for the generation of acpica in a generic unix-like
6821 environment. These makefiles are intended to generate the acpica tools
6823 utilities from the original acpica git source tree structure.
6825 Test Suites: Updated and cleaned up the documentation files. Updated the
6826 copyrights to 2009, affecting all source files. Use the new version of
6828 with quiet mode. Increased the number of available semaphores in the
6830 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
6832 an alternate implementation of the semaphore timeout to allow aslts to
6833 execute fully on Cygwin.
6835 ----------------------------------------
6836 20 March 2009. Summary of changes for version 20090320:
6838 1) ACPI CA Core Subsystem:
6840 Fixed a possible race condition between AcpiWalkNamespace and dynamic
6842 unloads. Added a reader/writer locking mechanism to allow multiple
6844 namespace walks (readers), but block a dynamic table unload until it can
6846 exclusive write access to the namespace. This fixes a problem where a
6848 unload could (possibly catastrophically) delete the portion of the
6850 that is currently being examined by a walk. Adds a new file, utlock.c,
6852 implements the reader/writer lock mechanism. ACPICA BZ 749.
6854 Fixed a regression introduced in version 20090220 where a change to the
6856 handling could cause the ACPICA subsystem to access non-existent I/O
6859 Modified the handling of FADT register and table (FACS/DSDT) addresses.
6861 FADT can contain both 32-bit and 64-bit versions of these addresses.
6862 Previously, the 64-bit versions were favored, meaning that if both 32 and
6864 versions were valid, but not equal, the 64-bit version was used. This was
6865 found to cause some machines to fail. Now, in this case, the 32-bit
6867 is used instead. This now matches the Windows behavior.
6869 Implemented a new mechanism to protect certain I/O ports. Provides
6871 compatibility and protects the standard PC I/O ports from access via AML
6872 code. Adds a new file, hwvalid.c
6874 Fixed a possible extraneous warning message from the FADT support. The
6875 message warns of a 32/64 length mismatch between the legacy and GAS
6876 definitions for a register.
6878 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
6880 made obsolete by the port protection mechanism above. It was previously
6882 to validate the entire address range of an operation region, which could
6884 incorrect if the range included illegal ports, but fields within the
6885 operation region did not actually access those ports. Validation is now
6886 performed on a per-field basis instead of the entire region.
6888 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
6889 Ignored bits must be "preserved" according to the ACPI spec. Usually,
6891 means a read/modify/write when writing to the register. However, for
6893 registers, writing a one means clear the event. Writing a zero means
6895 the event (do not clear.) This behavior is clarified in the ACPI 4.0
6897 and the ACPICA code now simply always writes a zero to the ignored bit.
6899 Modified the handling of ignored bits for the PM1 A/B Control Registers.
6901 per the ACPI specification, for the control registers, preserve
6902 (read/modify/write) all bits that are defined as either reserved or
6905 Updated the handling of write-only bits in the PM1 A/B Control Registers.
6906 When reading the register, zero the write-only bits as per the ACPI spec.
6907 ACPICA BZ 443. Lin Ming.
6909 Removed "Linux" from the list of supported _OSI strings. Linux no longer
6910 wants to reply true to this request. The Windows strings are the only
6912 through the AML that are tested and known to work properly.
6915 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6916 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6918 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6919 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6921 2) iASL Compiler/Disassembler and Tools:
6923 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
6927 ----------------------------------------
6928 20 February 2009. Summary of changes for version 20090220:
6930 1) ACPI CA Core Subsystem:
6932 Optimized the ACPI register locking. Removed locking for reads from the
6934 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
6936 not required when reading the single-bit registers. The
6937 AcpiGetRegisterUnlocked function is no longer needed and has been
6939 This will improve performance for reads on these registers. ACPICA BZ
6942 Fixed the parameter validation for AcpiRead/Write. Now return
6943 AE_BAD_PARAMETER if the input register pointer is null, and
6946 the register has an address of zero. Previously, these cases simply
6948 AE_OK. For optional registers such as PM1B status/enable/control, the
6950 should check for a valid register address before calling. ACPICA BZ 748.
6952 Renamed the external ACPI bit register access functions. Renamed
6953 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
6954 functions. The new names are AcpiReadBitRegister and
6955 AcpiWriteBitRegister.
6956 Also, restructured the code for these functions by simplifying the code
6958 and condensing duplicate code to reduce code size.
6960 Added new functions to transparently handle the possibly split PM1 A/B
6961 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
6963 now handle the split registers for PM1 Status, Enable, and Control.
6968 Added a function to handle the PM1 control registers,
6969 AcpiHwWritePm1Control.
6970 This function writes both of the PM1 control registers (A/B). These
6972 are different than the PM1 A/B status and enable registers in that
6974 values can be written to the A/B registers. Most notably, the SLP_TYP
6976 can be different, as per the values returned from the _Sx predefined
6979 Removed an extra register write within AcpiHwClearAcpiStatus. This
6981 was writing an optional PM1B status register twice. The existing call to
6983 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
6985 register. ACPICA BZ 751.
6987 Split out the PM1 Status registers from the FADT. Added new globals for
6989 registers (A/B), similar to the way the PM1 Enable registers are handled.
6990 Instead of overloading the FADT Event Register blocks. This makes the
6992 clearer and less prone to error.
6994 Fixed the warning message for when the platform contains too many ACPI
6996 for the default size of the global root table data structure. The
6998 for the truncation value was incorrect.
7000 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7001 obsolete macro, since it is now a simple reference to ->common.type.
7003 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7005 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7006 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7007 simply SLEEP_TYPE. ACPICA BZ 754.
7009 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7010 function is only needed on 64-bit host operating systems and is thus not
7011 included for 32-bit hosts.
7013 Debug output: print the input and result for invocations of the _OSI
7015 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7017 verbosity of this debug level. Len Brown.
7019 Example Code and Data Size: These are the sizes for the OS-independent
7020 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7021 debug version of the code includes the debug output trace mechanism and
7023 much larger code and data size.
7026 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7027 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7029 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7030 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7032 2) iASL Compiler/Disassembler and Tools:
7034 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7035 various legal performance profiles.
7037 ----------------------------------------
7038 23 January 2009. Summary of changes for version 20090123:
7040 1) ACPI CA Core Subsystem:
7042 Added the 2009 copyright to all module headers and signons. This affects
7043 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7044 the tools/utilities.
7046 Implemented a change to allow the host to override any ACPI table,
7048 dynamically loaded tables. Previously, only the DSDT could be replaced by
7050 host. With this change, the AcpiOsTableOverride interface is called for
7052 table found in the RSDT/XSDT during ACPICA initialization, and also
7054 a table is dynamically loaded via the AML Load operator.
7056 Updated FADT flag definitions, especially the Boot Architecture flags.
7058 Debugger: For the Find command, automatically pad the input ACPI name
7060 underscores if the name is shorter than 4 characters. This enables a
7062 with the actual namespace entry which is itself padded with underscores.
7064 Example Code and Data Size: These are the sizes for the OS-independent
7065 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7066 debug version of the code includes the debug output trace mechanism and
7068 much larger code and data size.
7071 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7072 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7074 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7075 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7077 2) iASL Compiler/Disassembler and Tools:
7079 Fix build error under Bison-2.4.
7081 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7083 flags. Now decode all flags, regardless of the FADT version. Flag output
7084 includes the FADT version which first defined each flag.
7086 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7088 DSDT). Windows only.
7090 ----------------------------------------
7091 04 December 2008. Summary of changes for version 20081204:
7093 1) ACPI CA Core Subsystem:
7095 The ACPICA Programmer Reference has been completely updated and revamped
7097 this release. This includes updates to the external interfaces, OSL
7098 interfaces, the overview sections, and the debugger reference.
7100 Several new ACPICA interfaces have been implemented and documented in the
7101 programmer reference:
7102 AcpiReset - Writes the reset value to the FADT-defined reset register.
7103 AcpiDisableAllGpes - Disable all available GPEs.
7104 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7105 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7106 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7107 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7108 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7110 Most of the public ACPI hardware-related interfaces have been moved to a
7112 file, components/hardware/hwxface.c
7114 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7115 register lengths within the FADT are now used, and the low level ACPI
7116 register access no longer hardcodes the ACPI register lengths. Given that
7117 there may be some risk in actually trusting the FADT register lengths, a
7119 time option was added to fall back to the default hardcoded lengths if
7121 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7122 option is set to true for now, and a warning is issued if a suspicious
7124 register length is overridden with the default value.
7126 Fixed a reference count issue in NsRepairObject. This problem was
7128 in version 20081031 as part of a fix to repair Buffer objects within
7131 Added semaphore support to the Linux/Unix application OS-services layer
7132 (OSL). ACPICA BZ 448. Lin Ming.
7134 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7136 be implemented in the OSL, or will binary semaphores be used instead.
7138 Example Code and Data Size: These are the sizes for the OS-independent
7139 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7140 debug version of the code includes the debug output trace mechanism and
7142 much larger code and data size.
7145 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7146 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7148 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7149 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7151 2) iASL Compiler/Disassembler and Tools:
7153 iASL: Completed the '-e' option to include additional ACPI tables in
7156 aid with disassembly and External statement generation. ACPICA BZ 742.
7160 iASL: Removed the "named object in while loop" error. The compiler cannot
7161 determine how many times a loop will execute. ACPICA BZ 730.
7163 Disassembler: Implemented support for FADT revision 2 (MS extension).
7167 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7170 ----------------------------------------
7171 31 October 2008. Summary of changes for version 20081031:
7173 1) ACPI CA Core Subsystem:
7175 Restructured the ACPICA header files into public/private. acpi.h now
7177 only the "public" acpica headers. All other acpica headers are "private"
7179 should not be included by acpica users. One new file, accommon.h is used
7181 include the commonly used private headers for acpica code generation.
7183 plans include moving all private headers to a new subdirectory.
7185 Implemented an automatic Buffer->String return value conversion for
7186 predefined ACPI methods. For these methods (such as _BIF), added
7188 conversion for return objects that are required to be a String, but a
7190 was found instead. This can happen when reading string battery data from
7192 operation region, because it used to be difficult to convert the data
7194 buffer to string from within the ASL. Ensures that the host OS is
7196 with a valid null-terminated string. Linux BZ 11822.
7198 Updated the FACS waking vector interfaces. Split
7199 AcpiSetFirmwareWakingVector
7200 into two: one for the 32-bit vector, another for the 64-bit vector. This
7202 required because the host OS must setup the wake much differently for
7204 vector (real vs. protected mode, etc.) and the interface itself should
7207 deciding which vector to use. Also, eliminated the
7208 GetFirmwareWakingVector
7209 interface, as it served no purpose (only the firmware reads the vector,
7211 only writes the vector.) ACPICA BZ 731.
7213 Implemented a mechanism to escape infinite AML While() loops. Added a
7215 counter to force exit from AML While loops if the count becomes too
7217 This can occur in poorly written AML when the hardware does not respond
7218 within a while loop and the loop does not implement a timeout. The
7220 loop count is configurable. A new exception code is returned when a loop
7222 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7224 Optimized the execution of AML While loops. Previously, a control state
7225 object was allocated and freed for each execution of the loop. The
7226 optimization is to simply reuse the control state for each iteration.
7228 speeds up the raw loop execution time by about 5%.
7230 Enhanced the implicit return mechanism. For Windows compatibility, return
7232 implicit integer of value zero for methods that contain no executable
7234 Such methods are seen in the field as stubs (presumably), and can cause
7235 drivers to fail if they expect a return value. Lin Ming.
7237 Allow multiple backslashes as root prefixes in namepaths. In a fully
7238 qualified namepath, allow multiple backslash prefixes. This can happen
7240 is seen in the field) because of the use of a double-backslash in strings
7241 (since backslash is the escape character) causing confusion. ACPICA BZ
7245 Emit a warning if two different FACS or DSDT tables are discovered in the
7246 FADT. Checks if there are two valid but different addresses for the FACS
7248 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7250 Consolidated the method argument count validation code. Merged the code
7252 validates control method argument counts into the predefined validation
7253 module. Eliminates possible multiple warnings for incorrect argument
7256 Implemented ACPICA example code. Includes code for ACPICA initialization,
7257 handler installation, and calling a control method. Available at
7258 source/tools/examples.
7260 Added a global pointer for FACS table to simplify internal FACS access.
7262 the global pointer instead of using AcpiGetTableByIndex for each FACS
7264 This simplifies the code for the Global Lock and the Firmware Waking
7267 Example Code and Data Size: These are the sizes for the OS-independent
7268 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7269 debug version of the code includes the debug output trace mechanism and
7271 much larger code and data size.
7274 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7275 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7277 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7278 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7280 2) iASL Compiler/Disassembler and Tools:
7282 iASL: Improved disassembly of external method calls. Added the -e option
7284 allow the inclusion of additional ACPI tables to help with the
7287 method invocations and the generation of external declarations during the
7288 disassembly. Certain external method invocations cannot be disassembled
7289 properly without the actual declaration of the method. Use the -e option
7291 include the table where the external method(s) are actually declared.
7293 useful for disassembling SSDTs that make method calls back to the master
7294 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
7296 -e dsdt.aml ssdt1.aml
7298 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
7299 problem where the use of an alias within a namepath would result in a not
7300 found error or cause the compiler to fault. Also now allows forward
7301 references from the Alias operator itself. ACPICA BZ 738.
7303 ----------------------------------------
7304 26 September 2008. Summary of changes for version 20080926:
7306 1) ACPI CA Core Subsystem:
7308 Designed and implemented a mechanism to validate predefined ACPI methods
7310 objects. This code validates the predefined ACPI objects (objects whose
7312 start with underscore) that appear in the namespace, at the time they are
7313 evaluated. The argument count and the type of the returned object are
7314 validated against the ACPI specification. The purpose of this validation
7316 to detect problems with the BIOS-implemented predefined ACPI objects
7318 the results are returned to the ACPI-related drivers. Future enhancements
7320 include actual repair of incorrect return objects where possible. Two new
7321 files are nspredef.c and acpredef.h.
7323 Fixed a fault in the AML parser if a memory allocation fails during the
7325 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
7327 Fixed an issue with implicit return compatibility. This change improves
7329 implicit return mechanism to be more compatible with the MS interpreter.
7331 Ming, ACPICA BZ 349.
7333 Implemented support for zero-length buffer-to-string conversions. Allow
7335 length strings during interpreter buffer-to-string conversions. For
7337 during the ToDecimalString and ToHexString operators, as well as implicit
7338 conversions. Fiodor Suietov, ACPICA BZ 585.
7340 Fixed two possible memory leaks in the error exit paths of
7341 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
7343 similar in that they use a stack of state objects in order to eliminate
7344 recursion. The stack must be fully unwound and deallocated if an error
7345 occurs. Lin Ming. ACPICA BZ 383.
7347 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
7349 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
7350 Moore ACPICA BZ 442.
7352 Removed the obsolete version number in module headers. Removed the
7353 "$Revision" number that appeared in each module header. This version
7355 was useful under SourceSafe and CVS, but has no meaning under git. It is
7357 only incorrect, it could also be misleading.
7359 Example Code and Data Size: These are the sizes for the OS-independent
7360 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7361 debug version of the code includes the debug output trace mechanism and
7363 much larger code and data size.
7366 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7367 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7369 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7370 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7372 ----------------------------------------
7373 29 August 2008. Summary of changes for version 20080829:
7375 1) ACPI CA Core Subsystem:
7377 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
7378 Reference. Changes include the elimination of cheating on the Object
7380 for the DdbHandle subtype, addition of a reference class field to
7381 differentiate the various reference types (instead of an AML opcode), and
7383 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
7385 Reduce an error to a warning for an incorrect method argument count.
7386 Previously aborted with an error if too few arguments were passed to a
7387 control method via the external ACPICA interface. Now issue a warning
7389 and continue. Handles the case where the method inadvertently declares
7391 many arguments, but does not actually use the extra ones. Applies mainly
7393 the predefined methods. Lin Ming. Linux BZ 11032.
7395 Disallow the evaluation of named object types with no intrinsic value.
7397 AE_TYPE for objects that have no value and therefore evaluation is
7399 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
7401 these types were allowed, but an exception would be generated at some
7403 during the evaluation. Now, the error is generated up front.
7405 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
7406 (nsnames.c). Fixes a leak in the error exit path.
7408 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
7410 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
7412 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
7415 Removed obsolete and/or unused exception codes from the acexcep.h header.
7416 There is the possibility that certain device drivers may be affected if
7418 use any of these exceptions.
7420 The ACPICA documentation has been added to the public git source tree,
7422 acpica/documents. Included are the ACPICA programmer reference, the iASL
7423 compiler reference, and the changes.txt release logfile.
7425 Example Code and Data Size: These are the sizes for the OS-independent
7426 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7427 debug version of the code includes the debug output trace mechanism and
7429 much larger code and data size.
7432 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7433 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7435 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7436 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7438 2) iASL Compiler/Disassembler and Tools:
7440 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
7441 defines _SCP with 3 arguments. Previous versions defined it with only 1
7442 argument. iASL now allows both definitions.
7444 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
7446 length subtables when disassembling ACPI tables. Also fixed a couple of
7447 errors where a full 16-bit table type field was not extracted from the
7451 acpisrc: Improve comment counting mechanism for generating source code
7452 statistics. Count first and last lines of multi-line comments as
7454 not comment lines. Handle Linux legal header in addition to standard
7458 ----------------------------------------
7460 29 July 2008. Summary of changes for version 20080729:
7462 1) ACPI CA Core Subsystem:
7464 Fix a possible deadlock in the GPE dispatch. Remove call to
7465 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
7467 to acquire the GPE lock but can deadlock since the GPE lock is already
7469 at dispatch time. This code was introduced in version 20060831 as a
7471 to Linux BZ 6881 and has since been removed from Linux.
7473 Add a function to dereference returned reference objects. Examines the
7475 object from a call to AcpiEvaluateObject. Any Index or RefOf references
7477 automatically dereferenced in an attempt to return something useful
7479 reference types cannot be converted into an external ACPI_OBJECT.)
7481 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
7483 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
7484 subtables for the MADT and one new subtable for the SRAT. Includes
7485 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
7487 Specification, June 2008.
7489 Additional error checking for pathname utilities. Add error check after
7491 calls to AcpiNsGetPathnameLength. Add status return from
7492 AcpiNsBuildExternalPath and check after all calls. Add parameter
7494 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
7496 Return status from the global init function AcpiUtGlobalInitialize. This
7498 used by both the kernel subsystem and the utilities such as iASL
7500 The function could possibly fail when the caches are initialized. Yang
7503 Add a function to decode reference object types to strings. Created for
7504 improved error messages.
7506 Improve object conversion error messages. Better error messages during
7508 conversion from internal to the external ACPI_OBJECT. Used for external
7510 to AcpiEvaluateObject.
7512 Example Code and Data Size: These are the sizes for the OS-independent
7513 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7514 debug version of the code includes the debug output trace mechanism and
7516 much larger code and data size.
7519 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7520 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7522 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7523 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7525 2) iASL Compiler/Disassembler and Tools:
7527 Debugger: fix a possible hang when evaluating non-methods. Fixes a
7529 introduced in version 20080701. If the object being evaluated (via
7531 command) is not a method, the debugger can hang while trying to obtain
7533 existent parameters.
7535 iASL: relax error for using reserved "_T_x" identifiers. These names can
7536 appear in a disassembled ASL file if they were emitted by the original
7537 compiler. Instead of issuing an error or warning and forcing the user to
7538 manually change these names, issue a remark instead.
7540 iASL: error if named object created in while loop. Emit an error if any
7542 object is created within a While loop. If allowed, this code will
7545 run-time error on the second iteration of the loop when an attempt is
7548 create the same named object twice. ACPICA bugzilla 730.
7550 iASL: Support absolute pathnames for include files. Add support for
7552 pathnames within the Include operator. previously, only relative
7556 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
7558 The ACPI spec requires one interrupt minimum. BZ 423
7560 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
7561 Handles the case for the Interrupt Resource Descriptor where
7562 the ResourceSource argument is omitted but ResourceSourceIndex
7563 is present. Now leave room for the Index. BZ 426
7565 iASL: Prevent error message if CondRefOf target does not exist. Fixes
7567 where an error message is emitted if the target does not exist. BZ 516
7569 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
7570 (get ACPI tables on Windows). This was apparently broken in version
7573 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
7575 the EOF happens immediately after the last table in the input file. Print
7576 completion message. Previously, no message was displayed in this case.
7578 ----------------------------------------
7579 01 July 2008. Summary of changes for version 20080701:
7581 0) Git source tree / acpica.org
7583 Fixed a problem where a git-clone from http would not transfer the entire
7586 1) ACPI CA Core Subsystem:
7588 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
7589 enable bit. Now performs a read-change-write of the enable register
7591 of simply writing out the cached enable mask. This will prevent
7593 enabling of GPEs if a rogue GPE is received during initialization (before
7595 handlers are installed.)
7597 Implemented a copy for dynamically loaded tables. Previously, dynamically
7598 loaded tables were simply mapped - but on some machines this memory is
7599 corrupted after suspend. Now copy the table to a local buffer. For the
7600 OpRegion case, added checksum verify. Use the table length from the table
7601 header, not the region length. For the Buffer case, use the table length
7602 also. Dennis Noordsij, Bob Moore. BZ 10734
7604 Fixed a problem where the same ACPI table could not be dynamically loaded
7606 unloaded more than once. Without this change, a table cannot be loaded
7608 once it has been loaded/unloaded one time. The current mechanism does not
7609 unregister a table upon an unload. During a load, if the same table is
7611 this no longer returns an exception. BZ 722
7613 Fixed a problem where the wrong descriptor length was calculated for the
7614 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
7616 are calculated as 12 bytes long, but the actual length in the internal
7617 descriptor is 16 because of the round-up to 8 on the 64-bit build.
7619 by Linn Crosetto. BZ 728
7621 Fixed a possible memory leak in the Unload operator. The DdbHandle
7623 by Load() did not have its reference count decremented during unload,
7625 to a memory leak. Lin Ming. BZ 727
7627 Fixed a possible memory leak when deleting thermal/processor objects. Any
7628 associated notify handlers (and objects) were not being deleted. Fiodor
7631 Fixed the ordering of the ASCII names in the global mutex table to match
7633 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
7635 Vegard Nossum. BZ 726
7637 Enhanced the AcpiGetObjectInfo interface to return the number of required
7638 arguments if the object is a control method. Added this call to the
7640 so the proper number of default arguments are passed to a method. This
7641 prevents a warning when executing methods from AcpiExec.
7643 Added a check for an invalid handle in AcpiGetObjectInfo. Return
7644 AE_BAD_PARAMETER if input handle is invalid. BZ 474
7646 Fixed an extraneous warning from exconfig.c on the 64-bit build.
7648 Example Code and Data Size: These are the sizes for the OS-independent
7649 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7650 debug version of the code includes the debug output trace mechanism and
7652 much larger code and data size.
7655 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7656 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7658 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7659 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7661 2) iASL Compiler/Disassembler and Tools:
7663 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
7664 resource descriptor names.
7666 iASL: Detect invalid ASCII characters in input (windows version). Removed
7668 "-CF" flag from the flex compile, enables correct detection of non-ASCII
7669 characters in the input. BZ 441
7671 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
7673 "result of operation not used" warning when the DDB handle returned from
7674 LoadTable is not used. The warning is not needed. BZ 590
7676 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
7679 pass address of table to the AML. Added option to disable OpRegion
7681 to allow creation of an OpRegion with a real address that was passed to
7683 All of this allows testing of the Load and Unload operators from
7686 Debugger: update tables command for unloaded tables. Handle unloaded
7688 and use the standard table header output routine.
7690 ----------------------------------------
7691 09 June 2008. Summary of changes for version 20080609:
7693 1) ACPI CA Core Subsystem:
7695 Implemented a workaround for reversed _PRT entries. A significant number
7697 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
7698 change dynamically detects and repairs this problem. Provides
7700 with MS ACPI. BZ 6859
7702 Simplified the internal ACPI hardware interfaces to eliminate the locking
7703 flag parameter from Register Read/Write. Added a new external interface,
7704 AcpiGetRegisterUnlocked.
7706 Fixed a problem where the invocation of a GPE control method could hang.
7708 was a regression introduced in 20080514. The new method argument count
7709 validation mechanism can enter an infinite loop when a GPE method is
7710 dispatched. Problem fixed by removing the obsolete code that passed GPE
7712 information to the notify handler via the control method parameter
7715 Fixed a problem where the _SST execution status was incorrectly returned
7717 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
7719 20080514. _SST is optional and a NOT_FOUND exception should never be
7722 Fixed a problem where a deleted object could be accessed from within the
7724 parser. This was a regression introduced in version 20080123 as a fix for
7726 Unload operator. Lin Ming. BZ 10669
7728 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
7730 and eliminated the use of a negative index in a loop. Operands are now
7731 displayed in the correct order, not backwards. This also fixes a
7733 introduced in 20080514 on 64-bit systems where the elimination of
7734 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
7737 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
7739 path did not delete a locally allocated structure.
7741 Updated definitions for the DMAR and SRAT tables to synchronize with the
7742 current specifications. Includes disassembler support.
7744 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
7745 loop termination value was used. Loop terminated on iteration early,
7747 one mutex. Linn Crosetto
7749 Example Code and Data Size: These are the sizes for the OS-independent
7750 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7751 debug version of the code includes the debug output trace mechanism and
7753 much larger code and data size.
7756 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7757 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7759 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7760 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7762 2) iASL Compiler/Disassembler and Tools:
7764 Disassembler: Implemented support for EisaId() within _CID objects. Now
7765 disassemble integer _CID objects back to EisaId invocations, including
7766 multiple integers within _CID packages. Includes single-step support for
7769 Disassembler: Added support for DMAR and SRAT table definition changes.
7771 ----------------------------------------
7772 14 May 2008. Summary of changes for version 20080514:
7774 1) ACPI CA Core Subsystem:
7776 Fixed a problem where GPEs were enabled too early during the ACPICA
7777 initialization. This could lead to "handler not installed" errors on some
7778 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
7780 ensures that all operation regions and devices throughout the namespace
7782 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
7784 Implemented a change to the enter sleep code. Moved execution of the _GTS
7785 method to just before setting sleep enable bit. The execution was moved
7787 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
7788 immediately before the SLP_EN bit is set, as per the ACPI specification.
7791 Implemented a fix to disable unknown GPEs (2nd version). Now always
7793 the GPE, even if ACPICA thinks that that it is already disabled. It is
7794 possible that the AML or some other code has enabled the GPE unbeknownst
7798 Fixed a problem with the Field operator where zero-length fields would
7800 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
7802 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
7804 Implemented a fix for the Load operator, now load the table at the
7806 root. This reverts a change introduced in version 20071019. The table is
7808 loaded at the namespace root even though this goes against the ACPI
7809 specification. This provides compatibility with other ACPI
7811 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
7814 Fixed a problem where ACPICA would not Load() tables with unusual
7816 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
7817 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
7818 Therefore, signature validation is worthless. Apparently MS ACPI accepts
7820 signatures, ACPICA must be compatible. BZ 10454.
7822 Fixed a possible negative array index in AcpiUtValidateException. Added
7824 fields to the exception string arrays to eliminate a -1 subtraction on
7828 Updated the debug tracking macros to reduce overall code and data size.
7829 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
7830 instead of pointers to static strings. Jan Beulich and Bob Moore.
7832 Implemented argument count checking in control method invocation via
7833 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
7835 many. This applies only to extern programmatic control method execution,
7837 method-to-method calls within the AML. Lin Ming.
7839 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
7841 longer needed, especially with the removal of 16-bit support. It was
7843 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
7846 32/64-bit platforms is required.
7848 Added the C const qualifier for appropriate string constants -- mostly
7849 MODULE_NAME and printf format strings. Jan Beulich.
7851 Example Code and Data Size: These are the sizes for the OS-independent
7852 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7853 debug version of the code includes the debug output trace mechanism and
7855 much larger code and data size.
7858 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7859 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7861 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7862 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7864 2) iASL Compiler/Disassembler and Tools:
7866 Implemented ACPI table revision ID validation in the disassembler. Zero
7868 always invalid. For DSDTs, the ID controls the interpreter integer width.
7870 means 32-bit and this is unusual. 2 or greater is 64-bit.
7872 ----------------------------------------
7873 21 March 2008. Summary of changes for version 20080321:
7875 1) ACPI CA Core Subsystem:
7877 Implemented an additional change to the GPE support in order to suppress
7878 spurious or stray GPEs. The AcpiEvDisableGpe function will now
7880 disable incoming GPEs that are neither enabled nor disabled -- meaning
7882 the GPE is unknown to the system. This should prevent future interrupt
7884 from that GPE. BZ 6217 (Zhang Rui)
7886 Fixed a problem where NULL package elements were not returned to the
7887 AcpiEvaluateObject interface correctly. The element was simply ignored
7888 instead of returning a NULL ACPI_OBJECT package element, potentially
7890 a buffer overflow and/or confusing the caller who expected a fixed number
7892 elements. BZ 10132 (Lin Ming, Bob Moore)
7894 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
7896 Qword), Field, BankField, and IndexField operators when invoked from
7898 an executing control method. In this case, these operators created
7900 nodes that were incorrectly left marked as permanent nodes instead of
7901 temporary nodes. This could cause a problem if there is race condition
7902 between an exiting control method and a running namespace walk. (Reported
7906 Fixed a problem where the CreateField and CreateXXXField operators would
7907 incorrectly allow duplicate names (the name of the field) with no
7911 Implemented several changes for Notify handling. Added support for new
7913 values (ACPI 2.0+) and improved the Notify debug output. Notify on
7914 PowerResource objects is no longer allowed, as per the ACPI
7916 (Bob Moore, Zhang Rui)
7918 All Reference Objects returned via the AcpiEvaluateObject interface are
7920 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
7922 NULL objects - either NULL package elements or unresolved named
7925 Fixed a problem where an extraneous debug message was produced for
7927 objects (when debugging enabled). The message "Package List length larger
7928 than NumElements count" is now produced in the correct case, and is now
7930 error message rather than a debug message. Added a debug message for the
7931 opposite case, where NumElements is larger than the Package List (the
7933 will be padded out with NULL elements as per the ACPI spec.)
7935 Implemented several improvements for the output of the ASL "Debug" object
7937 clarify and keep all data for a given object on one output line.
7939 Fixed two size calculation issues with the variable-length Start
7941 resource descriptor.
7943 Example Code and Data Size: These are the sizes for the OS-independent
7944 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7945 debug version of the code includes the debug output trace mechanism and
7947 a much larger code and data size.
7950 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7951 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7953 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7954 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7956 2) iASL Compiler/Disassembler and Tools:
7958 Fixed a problem with the use of the Switch operator where execution of
7960 containing method by multiple concurrent threads could cause an
7961 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
7962 actual Switch opcode, it must be simulated with local named temporary
7963 variables and if/else pairs. The solution chosen was to mark any method
7965 uses Switch as Serialized, thus preventing multiple thread entries. BZ
7968 ----------------------------------------
7969 13 February 2008. Summary of changes for version 20080213:
7971 1) ACPI CA Core Subsystem:
7973 Implemented another MS compatibility design change for GPE/Notify
7975 GPEs are now cleared/enabled asynchronously to allow all pending notifies
7977 complete first. It is expected that the OSL will queue the enable request
7978 behind all pending notify requests (may require changes to the local host
7980 in AcpiOsExecute). Alexey Starikovskiy.
7982 Fixed a problem where buffer and package objects passed as arguments to a
7983 control method via the external AcpiEvaluateObject interface could cause
7985 AE_AML_INTERNAL exception depending on the order and type of operators
7986 executed by the target control method.
7988 Fixed a problem where resource descriptor size optimization could cause a
7989 problem when a _CRS resource template is passed to a _SRS method. The
7991 resource template must use the same descriptors (with the same size) as
7992 returned from _CRS. This change affects the following resource
7994 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
7997 Fixed a problem where a CopyObject to RegionField, BankField, and
7999 objects did not perform an implicit conversion as it should. These types
8001 retain their initial type permanently as per the ACPI specification.
8003 a CopyObject to all other object types should not perform an implicit
8004 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8006 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8007 match device CIDs did not examine the entire list of available CIDs, but
8008 instead aborted on the first non-matching CID. Andrew Patterson.
8010 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8012 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8013 truncating the upper dword of a 64-bit value. This macro is only used to
8014 display debug output, so no incorrect calculations were made. Also,
8015 reimplemented the macro so that a 64-bit shift is not performed by
8016 inefficient compilers.
8018 Added missing va_end statements that should correspond with each va_start
8021 Example Code and Data Size: These are the sizes for the OS-independent
8022 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8023 debug version of the code includes the debug output trace mechanism and
8025 a much larger code and data size.
8028 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8029 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8031 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8032 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8034 2) iASL Compiler/Disassembler and Tools:
8036 Implemented full disassembler support for the following new ACPI tables:
8037 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8038 complicated HEST table. These tables support the Windows Hardware Error
8039 Architecture (WHEA).
8041 ----------------------------------------
8042 23 January 2008. Summary of changes for version 20080123:
8044 1) ACPI CA Core Subsystem:
8046 Added the 2008 copyright to all module headers and signons. This affects
8047 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8048 the tools/utilities.
8050 Fixed a problem with the SizeOf operator when used with Package and
8052 objects. These objects have deferred execution for some arguments, and
8054 execution is now completed before the SizeOf is executed. This problem
8056 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8060 Implemented an enhancement to the interpreter "slack mode". In the
8063 an explicit return or an implicitly returned object from the last
8065 opcode, a control method will now implicitly return an integer of value 0
8067 Microsoft compatibility. (Lin Ming) BZ 392
8069 Fixed a problem with the Load operator where an exception was not
8072 the case where the table is already loaded. (Lin Ming) BZ 463
8074 Implemented support for the use of DDBHandles as an Indexed Reference, as
8076 the ACPI spec. (Lin Ming) BZ 486
8078 Implemented support for UserTerm (Method invocation) for the Unload
8080 as per the ACPI spec. (Lin Ming) BZ 580
8082 Fixed a problem with the LoadTable operator where the OemId and
8084 input strings could cause unexpected failures if they were shorter than
8086 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8088 Implemented support for UserTerm (Method invocation) for the Unload
8090 as per the ACPI spec. (Lin Ming) BZ 580
8092 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8094 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8096 Example Code and Data Size: These are the sizes for the OS-independent
8097 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8098 debug version of the code includes the debug output trace mechanism and
8100 a much larger code and data size.
8103 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8104 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8106 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8107 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8109 2) iASL Compiler/Disassembler and Tools:
8111 Implemented support in the disassembler for checksum validation on
8113 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8115 header dump at the start of the disassembly.
8117 Implemented additional debugging information in the namespace listing
8119 created during compilation. In addition to the namespace hierarchy, the
8121 pathname to each namespace object is displayed.
8123 Fixed a problem with the disassembler where invalid ACPI tables could
8125 faults or infinite loops.
8127 Fixed an unexpected parse error when using the optional "parameter types"
8128 list in a control method declaration. (Lin Ming) BZ 397
8130 Fixed a problem where two External declarations with the same name did
8132 cause an error (Lin Ming) BZ 509
8134 Implemented support for full TermArgs (adding Argx, Localx and method
8135 invocation) for the ParameterData parameter to the LoadTable operator.
8139 ----------------------------------------
8140 19 December 2007. Summary of changes for version 20071219:
8142 1) ACPI CA Core Subsystem:
8144 Implemented full support for deferred execution for the TermArg string
8145 arguments for DataTableRegion. This enables forward references and full
8146 operand resolution for the three string arguments. Similar to
8148 deferred argument execution.) Lin Ming. BZ 430
8150 Implemented full argument resolution support for the BankValue argument
8152 BankField. Previously, only constants were supported, now any TermArg may
8154 used. Lin Ming BZ 387, 393
8156 Fixed a problem with AcpiGetDevices where the search of a branch of the
8157 device tree could be terminated prematurely. In accordance with the ACPI
8158 specification, the search down the current branch is terminated if a
8160 is both not present and not functional (instead of just not present.)
8164 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8166 the underlying AML code changed the GPE enable registers. Now, any
8168 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8170 instead of simply ignored. Rui Zhang.
8172 Fixed a problem with Index Fields where the Index register was
8174 limited to a maximum of 32 bits. Now any size may be used.
8176 Fixed a couple memory leaks associated with "implicit return" objects
8178 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8180 Example Code and Data Size: These are the sizes for the OS-independent
8181 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8182 debug version of the code includes the debug output trace mechanism and
8184 a much larger code and data size.
8187 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8188 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8190 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8191 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8193 ----------------------------------------
8194 14 November 2007. Summary of changes for version 20071114:
8196 1) ACPI CA Core Subsystem:
8198 Implemented event counters for each of the Fixed Events, the ACPI SCI
8199 (interrupt) itself, and control methods executed. Named
8200 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8202 should be useful for debugging and statistics.
8204 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8205 contents of the various event counters. Returns the current values for
8206 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8207 AcpiMethodCount. The interface can be expanded in the future if new
8209 are added. Device drivers should use this interface rather than access
8213 Fixed a problem with the FromBCD and ToBCD operators. With some
8215 the ShortDivide function worked incorrectly, causing problems with the
8217 functions with large input values. A truncation from 64-bit to 32-bit
8218 inadvertently occurred. Internal BZ 435. Lin Ming
8220 Fixed a problem with Index references passed as method arguments.
8222 passed as arguments to control methods were dereferenced immediately
8224 control was passed to the called method). The references are now
8226 passed directly to the called method. BZ 5389. Lin Ming
8228 Fixed a problem with CopyObject used in conjunction with the Index
8230 The reference was incorrectly dereferenced before the copy. The reference
8232 now correctly copied. BZ 5391. Lin Ming
8234 Fixed a problem with Control Method references within Package objects.
8236 references are now correctly generated. This completes the package
8237 construction overhaul that began in version 20071019.
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: 78.8K Code, 17.2K Data, 96.0K Total
8247 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8249 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8250 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8253 2) iASL Compiler/Disassembler and Tools:
8255 The AcpiExec utility now installs handlers for all of the predefined
8256 Operation Region types. New types supported are: PCI_Config, CMOS, and
8259 Fixed a problem with the 64-bit version of AcpiExec where the extended
8261 bit) address fields for the DSDT and FACS within the FADT were not being
8262 used, causing truncation of the upper 32-bits of these addresses. Lin
8266 ----------------------------------------
8267 19 October 2007. Summary of changes for version 20071019:
8269 1) ACPI CA Core Subsystem:
8271 Fixed a problem with the Alias operator when the target of the alias is a
8272 named ASL operator that opens a new scope -- Scope, Device,
8274 Processor, and ThermalZone. In these cases, any children of the original
8275 operator could not be accessed via the alias, potentially causing
8277 AE_NOT_FOUND exceptions. (BZ 9067)
8279 Fixed a problem with the Package operator where all named references were
8280 created as object references and left otherwise unresolved. According to
8282 ACPI specification, a Package can only contain Data Objects or references
8284 control methods. The implication is that named references to Data Objects
8285 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
8286 immediately upon package creation. This is the approach taken with this
8287 change. References to all other named objects (Methods, Devices, Scopes,
8288 etc.) are all now properly created as reference objects. (BZ 5328)
8290 Reverted a change to Notify handling that was introduced in version
8291 20070508. This version changed the Notify handling from asynchronous to
8292 fully synchronous (Device driver Notify handling with respect to the
8294 ASL operator). It was found that this change caused more problems than it
8295 solved and was removed by most users.
8297 Fixed a problem with the Increment and Decrement operators where the type
8299 the target object could be unexpectedly and incorrectly changed. (BZ 353)
8302 Fixed a problem with the Load and LoadTable operators where the table
8303 location within the namespace was ignored. Instead, the table was always
8304 loaded into the root or current scope. Lin Ming.
8306 Fixed a problem with the Load operator when loading a table from a buffer
8307 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
8309 Fixed a problem with the Debug object where a store of a DdbHandle
8311 object to the Debug object could cause a fault.
8313 Added a table checksum verification for the Load operator, in the case
8315 the load is from a buffer. (BZ 578).
8317 Implemented additional parameter validation for the LoadTable operator.
8319 length of the input strings SignatureString, OemIdString, and OemTableId
8321 now checked for maximum lengths. (BZ 582) Lin Ming.
8323 Example Code and Data Size: These are the sizes for the OS-independent
8324 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8325 debug version of the code includes the debug output trace mechanism and
8327 a much larger code and data size.
8330 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8331 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8333 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8334 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8337 2) iASL Compiler/Disassembler:
8339 Fixed a problem where if a single file was specified and the file did not
8340 exist, no error message was emitted. (Introduced with wildcard support in
8343 ----------------------------------------
8344 19 September 2007. Summary of changes for version 20070919:
8346 1) ACPI CA Core Subsystem:
8348 Designed and implemented new external interfaces to install and remove
8349 handlers for ACPI table-related events. Current events that are defined
8351 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
8352 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
8353 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
8355 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
8356 (acpi_serialized option on Linux) could cause some systems to hang during
8357 initialization. (Bob Moore) BZ 8171
8359 Fixed a problem where objects of certain types (Device, ThermalZone,
8360 Processor, PowerResource) can be not found if they are declared and
8361 referenced from within the same control method (Lin Ming) BZ 341
8363 Example Code and Data Size: These are the sizes for the OS-independent
8364 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8365 debug version of the code includes the debug output trace mechanism and
8367 a much larger code and data size.
8370 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8371 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8373 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8374 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8377 2) iASL Compiler/Disassembler:
8379 Implemented support to allow multiple files to be compiled/disassembled
8382 single invocation. This includes command line wildcard support for both
8384 Windows and Unix versions of the compiler. This feature simplifies the
8385 disassembly and compilation of multiple ACPI tables in a single
8388 ----------------------------------------
8389 08 May 2007. Summary of changes for version 20070508:
8391 1) ACPI CA Core Subsystem:
8393 Implemented a Microsoft compatibility design change for the handling of
8395 Notify AML operator. Previously, notify handlers were dispatched and
8396 executed completely asynchronously in a deferred thread. The new design
8397 still executes the notify handlers in a different thread, but the
8399 thread that executed the Notify() now waits at a synchronization point
8401 the notify handler to complete. Some machines depend on a synchronous
8403 operator in order to operate correctly.
8405 Implemented support to allow Package objects to be passed as method
8406 arguments to the external AcpiEvaluateObject interface. Previously, this
8407 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
8408 implemented since there were no reserved control methods that required it
8411 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
8413 contained invalid non-zero values in reserved fields could cause later
8414 failures because these fields have meaning in later revisions of the
8416 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
8418 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
8420 Fixed a problem where the Global Lock handle was not properly updated if
8422 thread that acquired the Global Lock via executing AML code then
8424 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
8428 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
8429 could be corrupted if the interrupt being removed was at the head of the
8430 list. Reported by Linn Crosetto.
8432 Example Code and Data Size: These are the sizes for the OS-independent
8433 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8434 debug version of the code includes the debug output trace mechanism and
8436 a much larger code and data size.
8439 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8440 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8442 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8443 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8445 ----------------------------------------
8446 20 March 2007. Summary of changes for version 20070320:
8448 1) ACPI CA Core Subsystem:
8450 Implemented a change to the order of interpretation and evaluation of AML
8451 operand objects within the AML interpreter. The interpreter now evaluates
8452 operands in the order that they appear in the AML stream (and the
8453 corresponding ASL code), instead of in the reverse order (after the
8455 operand list has been parsed). The previous behavior caused several
8457 incompatibilities with the Microsoft AML interpreter as well as being
8458 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
8460 Implemented a change to the ACPI Global Lock support. All interfaces to
8462 global lock now allow the same thread to acquire the lock multiple times.
8463 This affects the AcpiAcquireGlobalLock external interface to the global
8465 as well as the internal use of the global lock to support AML fields -- a
8466 control method that is holding the global lock can now simultaneously
8468 AML fields that require global lock protection. Previously, in both
8470 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
8472 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
8473 Controller. There is no change to the behavior of the AML Acquire
8475 as this can already be used to acquire a mutex multiple times by the same
8476 thread. BZ 8066. With assistance from Alexey Starikovskiy.
8478 Fixed a problem where invalid objects could be referenced in the AML
8479 Interpreter after error conditions. During operand evaluation, ensure
8481 the internal "Return Object" field is cleared on error and only valid
8482 pointers are stored there. Caused occasional access to deleted objects
8484 resulted in "large reference count" warning messages. Valery Podrezov.
8486 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
8488 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
8491 Fixed an internal problem with the handling of result objects on the
8492 interpreter result stack. BZ 7872. Valery Podrezov.
8494 Removed obsolete code that handled the case where AML_NAME_OP is the
8496 of a reference (Reference.Opcode). This code was no longer necessary. BZ
8497 7874. Valery Podrezov.
8499 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
8502 remnant from the previously discontinued 16-bit support.
8504 Example Code and Data Size: These are the sizes for the OS-independent
8505 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8506 debug version of the code includes the debug output trace mechanism and
8508 a much larger code and data size.
8511 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8512 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8514 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8515 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8517 ----------------------------------------
8518 26 January 2007. Summary of changes for version 20070126:
8520 1) ACPI CA Core Subsystem:
8522 Added the 2007 copyright to all module headers and signons. This affects
8523 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8526 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
8527 during a table load. A bad pointer was passed in the case where the DSDT
8529 overridden, causing a fault in this case.
8531 Example Code and Data Size: These are the sizes for the OS-independent
8532 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8533 debug version of the code includes the debug output trace mechanism and
8535 a much larger code and data size.
8538 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8539 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8541 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8542 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8544 ----------------------------------------
8545 15 December 2006. Summary of changes for version 20061215:
8547 1) ACPI CA Core Subsystem:
8549 Support for 16-bit ACPICA has been completely removed since it is no
8551 necessary and it clutters the code. All 16-bit macros, types, and
8552 conditional compiles have been removed, cleaning up and simplifying the
8554 across the entire subsystem. DOS support is no longer needed since the
8555 bootable Linux firmware kit is now available.
8557 The handler for the Global Lock is now removed during AcpiTerminate to
8558 enable a clean subsystem restart, via the implementation of the
8559 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
8562 Implemented enhancements to the multithreading support within the
8564 to enable improved multithreading debugging and evaluation of the
8568 Debugger: Enhanced the Statistics/Memory command to emit the total
8570 memory used during the execution, as well as the maximum memory consumed
8572 each of the various object types. (Valery Podrezov)
8574 Example Code and Data Size: These are the sizes for the OS-independent
8575 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8576 debug version of the code includes the debug output trace mechanism and
8578 a much larger code and data size.
8581 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8582 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8584 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8585 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8588 2) iASL Compiler/Disassembler and Tools:
8590 AcpiExec: Implemented a new option (-m) to display full memory use
8591 statistics upon subsystem/program termination. (Valery Podrezov)
8593 ----------------------------------------
8594 09 November 2006. Summary of changes for version 20061109:
8596 1) ACPI CA Core Subsystem:
8598 Optimized the Load ASL operator in the case where the source operand is
8600 operation region. Simply map the operation region memory, instead of
8601 performing a bytewise read. (Region must be of type SystemMemory, see
8604 Fixed the Load ASL operator for the case where the source operand is a
8605 region field. A buffer object is also allowed as the source operand. BZ
8608 Fixed a problem where the Load ASL operator allowed the source operand to
8610 an operation region of any type. It is now restricted to regions of type
8611 SystemMemory, as per the ACPI specification. BZ 481
8613 Additional cleanup and optimizations for the new Table Manager code.
8615 AcpiEnable will now fail if all of the required ACPI tables are not
8617 (FADT, FACS, DSDT). BZ 477
8619 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
8621 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
8622 manually optimized to be aligned and will not work if it is byte-packed.
8624 Example Code and Data Size: These are the sizes for the OS-independent
8625 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8626 debug version of the code includes the debug output trace mechanism and
8628 a much larger code and data size.
8631 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8632 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8634 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8635 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8638 2) iASL Compiler/Disassembler and Tools:
8640 Fixed a problem where the presence of the _OSI predefined control method
8641 within complex expressions could cause an internal compiler error.
8643 AcpiExec: Implemented full region support for multiple address spaces.
8644 SpaceId is now part of the REGION object. BZ 429
8646 ----------------------------------------
8647 11 October 2006. Summary of changes for version 20061011:
8649 1) ACPI CA Core Subsystem:
8651 Completed an AML interpreter performance enhancement for control method
8652 execution. Previously a 2-pass parse/execution, control methods are now
8653 completely parsed and executed in a single pass. This improves overall
8654 interpreter performance by ~25%, reduces code size, and reduces CPU stack
8655 use. (Valery Podrezov + interpreter changes in version 20051202 that
8656 eliminated namespace loading during the pass one parse.)
8658 Implemented _CID support for PCI Root Bridge detection. If the _HID does
8660 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
8662 obtained and also checked for an ID match.
8664 Implemented additional support for the PCI _ADR execution: upsearch until
8666 device scope is found before executing _ADR. This allows PCI_Config
8667 operation regions to be declared locally within control methods
8671 Fixed a problem with a possible race condition between threads executing
8672 AcpiWalkNamespace and the AML interpreter. This condition was removed by
8673 modifying AcpiWalkNamespace to (by default) ignore all temporary
8675 entries created during any concurrent control method execution. An
8676 additional namespace race condition is known to exist between
8677 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
8680 Restructured the AML ParseLoop function, breaking it into several
8681 subfunctions in order to reduce CPU stack use and improve
8685 AcpiGetHandle: Fix for parameter validation to detect invalid
8687 of prefix handle and pathname. BZ 478
8689 Example Code and Data Size: These are the sizes for the OS-independent
8690 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8691 debug version of the code includes the debug output trace mechanism and
8693 a much larger code and data size.
8696 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8697 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8699 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8700 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8702 2) iASL Compiler/Disassembler and Tools:
8704 Ported the -g option (get local ACPI tables) to the new ACPICA Table
8706 to restore original behavior.
8708 ----------------------------------------
8709 27 September 2006. Summary of changes for version 20060927:
8711 1) ACPI CA Core Subsystem:
8713 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
8714 These functions now use a spinlock for mutual exclusion and the interrupt
8715 level indication flag is not needed.
8717 Fixed a problem with the Global Lock where the lock could appear to be
8718 obtained before it is actually obtained. The global lock semaphore was
8719 inadvertently created with one unit instead of zero units. (BZ 464)
8723 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
8725 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
8727 Example Code and Data Size: These are the sizes for the OS-independent
8728 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8729 debug version of the code includes the debug output trace mechanism and
8731 a much larger code and data size.
8734 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8735 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8737 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8738 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8741 2) iASL Compiler/Disassembler and Tools:
8743 Fixed a compilation problem with the pre-defined Resource Descriptor
8745 names where an "object does not exist" error could be incorrectly
8747 if the parent ResourceTemplate pathname places the template within a
8748 different namespace scope than the current scope. (BZ 7212)
8750 Fixed a problem where the compiler could hang after syntax errors
8752 in an ElseIf construct. (BZ 453)
8754 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
8755 operator. An incorrect output filename was produced when this parameter
8757 a null string (""). Now, the original input filename is used as the AML
8758 output filename, with an ".aml" extension.
8760 Implemented a generic batch command mode for the AcpiExec utility
8762 any AML debugger command) (Valery Podrezov).
8764 ----------------------------------------
8765 12 September 2006. Summary of changes for version 20060912:
8767 1) ACPI CA Core Subsystem:
8769 Enhanced the implementation of the "serialized mode" of the interpreter
8770 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
8771 specified, instead of creating a serialization semaphore per control
8773 the interpreter lock is simply no longer released before a blocking
8774 operation during control method execution. This effectively makes the AML
8775 Interpreter single-threaded. The overhead of a semaphore per-method is
8778 Fixed a regression where an error was no longer emitted if a control
8780 attempts to create 2 objects of the same name. This once again returns
8781 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
8783 will dynamically serialize the control method to possible prevent future
8786 Integrated a fix for a problem with PCI Express HID detection in the PCI
8787 Config Space setup procedure. (BZ 7145)
8789 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
8790 AcpiHwInitialize function - the FADT registers are now validated when the
8793 Added two new warnings during FADT verification - 1) if the FADT is
8795 than the largest known FADT version, and 2) if there is a mismatch
8798 32-bit block address and the 64-bit X counterpart (when both are non-
8801 Example Code and Data Size: These are the sizes for the OS-independent
8802 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8803 debug version of the code includes the debug output trace mechanism and
8805 a much larger code and data size.
8808 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8809 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8811 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8812 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8815 2) iASL Compiler/Disassembler and Tools:
8817 Fixed a problem with the implementation of the Switch() operator where
8819 temporary variable was declared too close to the actual Switch, instead
8821 at method level. This could cause a problem if the Switch() operator is
8822 within a while loop, causing an error on the second iteration. (BZ 460)
8824 Disassembler - fix for error emitted for unknown type for target of scope
8825 operator. Now, ignore it and continue.
8827 Disassembly of an FADT now verifies the input FADT and reports any errors
8828 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
8830 Disassembly of raw data buffers with byte initialization data now
8832 each output line with the current buffer offset.
8834 Disassembly of ASF! table now includes all variable-length data fields at
8835 the end of some of the subtables.
8837 The disassembler now emits a comment if a buffer appears to be a
8838 ResourceTemplate, but cannot be disassembled as such because the EndTag
8840 not appear at the very end of the buffer.
8842 AcpiExec - Added the "-t" command line option to enable the serialized
8844 of the AML interpreter.
8846 ----------------------------------------
8847 31 August 2006. Summary of changes for version 20060831:
8849 1) ACPI CA Core Subsystem:
8851 Miscellaneous fixes for the Table Manager:
8852 - Correctly initialize internal common FADT for all 64-bit "X" fields
8853 - Fixed a couple table mapping issues during table load
8854 - Fixed a couple alignment issues for IA64
8855 - Initialize input array to zero in AcpiInitializeTables
8856 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
8859 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
8861 immediately disabled to prevent the waking GPE from firing again and to
8862 prevent other wake GPEs from interrupting the wake process.
8864 Added the AcpiGpeCount global that tracks the number of processed GPEs,
8866 be used for debugging systems with a large number of ACPI interrupts.
8868 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
8869 both the ACPICA headers and the disassembler.
8871 Example Code and Data Size: These are the sizes for the OS-independent
8872 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8873 debug version of the code includes the debug output trace mechanism and
8875 a much larger code and data size.
8878 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8879 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8881 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8882 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8885 2) iASL Compiler/Disassembler and Tools:
8887 Disassembler support for the DMAR ACPI table.
8889 ----------------------------------------
8890 23 August 2006. Summary of changes for version 20060823:
8892 1) ACPI CA Core Subsystem:
8894 The Table Manager component has been completely redesigned and
8895 reimplemented. The new design is much simpler, and reduces the overall
8897 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
8899 now possible to obtain the ACPI tables very early during kernel
8900 initialization, even before dynamic memory management is initialized.
8901 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
8903 Obsolete ACPICA interfaces:
8905 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
8908 - AcpiLoadTable: Not needed.
8909 - AcpiUnloadTable: Not needed.
8911 New ACPICA interfaces:
8913 - AcpiInitializeTables: Must be called before the table manager can be
8915 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
8916 allocated memory after it becomes available.
8917 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
8921 Other ACPICA changes:
8923 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
8925 AcpiOsUnmapMemory to free this mapping.
8926 - AcpiGetTable returns the actual mapped table. The mapping is managed
8927 internally and must not be deleted by the caller. Use of this interface
8928 causes no additional dynamic memory allocation.
8929 - AcpiFindRootPointer: Support for physical addressing has been
8931 it appeared to be unused.
8932 - The interface to AcpiOsMapMemory has changed to be consistent with the
8933 other allocation interfaces.
8934 - The interface to AcpiOsGetRootPointer has changed to eliminate
8937 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
8939 bit platforms. Was previously 64 bits on all platforms.
8940 - The interface to the ACPI Global Lock acquire/release macros have
8942 slightly since ACPICA no longer keeps a local copy of the FACS with a
8943 constructed pointer to the actual global lock.
8945 Porting to the new table manager:
8947 - AcpiInitializeTables: Must be called once, and can be called anytime
8948 during the OS initialization process. It allows the host to specify an
8950 of memory to be used to store the internal version of the RSDT/XSDT (root
8951 table). This allows the host to access ACPI tables before memory
8953 is initialized and running.
8954 - AcpiReallocateRootTable: Can be called after memory management is
8956 to copy the root table to a dynamically allocated array, freeing up the
8957 scratch memory specified in the call to AcpiInitializeTables.
8958 - AcpiSubsystemInitialize: This existing interface is independent of the
8959 Table Manager, and does not have to be called before the Table Manager
8961 be used, it only must be called before the rest of ACPICA can be used.
8962 - ACPI Tables: Some changes have been made to the names and structure of
8964 actbl.h and actbl1.h header files and may require changes to existing
8966 For example, bitfields have been completely removed because of their lack
8968 portability across C compilers.
8969 - Update interfaces to the Global Lock acquire/release macros if local
8970 versions are used. (see acwin.h)
8972 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
8976 Example Code and Data Size: These are the sizes for the OS-independent
8977 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8978 debug version of the code includes the debug output trace mechanism and
8980 a much larger code and data size.
8983 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8984 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8986 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8987 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8990 2) iASL Compiler/Disassembler and Tools:
8992 No changes for this release.
8994 ----------------------------------------
8995 21 July 2006. Summary of changes for version 20060721:
8997 1) ACPI CA Core Subsystem:
8999 The full source code for the ASL test suite used to validate the iASL
9000 compiler and the ACPICA core subsystem is being released with the ACPICA
9001 source for the first time. The source is contained in a separate package
9003 consists of over 1100 files that exercise all ASL/AML operators. The
9005 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9009 Completed a new design and implementation for support of the ACPI Global
9010 Lock. On the OS side, the global lock is now treated as a standard AML
9011 mutex. Previously, multiple OS threads could "acquire" the global lock
9012 simultaneously. However, this could cause the BIOS to be starved out of
9014 lock - especially in cases such as the Embedded Controller driver where
9015 there is a tight coupling between the OS and the BIOS.
9017 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9018 The Global Lock interrupt handler no longer queues the execution of a
9019 separate thread to signal the global lock semaphore. Instead, the
9021 is signaled directly from the interrupt handler.
9023 Implemented support within the AML interpreter for package objects that
9024 contain a larger AML length (package list length) than the package
9026 count. In this case, the length of the package is truncated to match the
9027 package element count. Some BIOS code apparently modifies the package
9029 on the fly, and this change supports this behavior. Provides
9031 with the MS AML interpreter. (With assistance from Fiodor Suietov)
9033 Implemented a temporary fix for the BankValue parameter of a Bank Field
9035 support all constant values, now including the Zero and One opcodes.
9036 Evaluation of this parameter must eventually be converted to a full
9038 evaluation. A not-implemented error is now returned (temporarily) for
9040 constant values for this parameter.
9042 Fixed problem reports (Fiodor Suietov) integrated:
9043 - Fix for premature object deletion after CopyObject on Operation Region
9047 Example Code and Data Size: These are the sizes for the OS-independent
9048 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9049 debug version of the code includes the debug output trace mechanism and
9051 a much larger code and data size.
9054 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9055 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9057 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9058 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9061 2) iASL Compiler/Disassembler and Tools:
9063 No changes for this release.
9065 ----------------------------------------
9066 07 July 2006. Summary of changes for version 20060707:
9068 1) ACPI CA Core Subsystem:
9070 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9071 that do not allow the initialization of address pointers within packed
9072 structures - even though the hardware itself may support misaligned
9073 transfers. Some of the debug data structures are packed by default to
9076 Added an error message for the case where AcpiOsGetThreadId() returns
9078 A non-zero value is required by the core ACPICA code to ensure the proper
9079 operation of AML mutexes and recursive control methods.
9081 The DSDT is now the only ACPI table that determines whether the AML
9082 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9084 the hooks for per-table 32/64 switching have been removed from the code.
9086 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9088 Fixed a possible leak of an OwnerID in the error path of
9089 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9090 deletion to a single place in AcpiTbUninstallTable to correct possible
9092 when using the AcpiTbDeleteTablesByType interface (with assistance from
9095 Fixed a problem with Serialized control methods where the semaphore
9096 associated with the method could be over-signaled after multiple method
9099 Fixed two issues with the locking of the internal namespace data
9101 Both the Unload() operator and AcpiUnloadTable interface now lock the
9102 namespace during the namespace deletion associated with the table unload
9103 (with assistance from Linn Crosetto.)
9105 Fixed problem reports (Valery Podrezov) integrated:
9106 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9108 Fixed problem reports (Fiodor Suietov) integrated:
9109 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9110 - On Address Space handler deletion, needless deactivation call (BZ 374)
9111 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9113 - Possible memory leak, Notify sub-objects of Processor, Power,
9116 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9117 - Minimum Length of RSDT should be validated (BZ 379)
9118 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9120 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
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: 80.5K Code, 17.8K Data, 98.3K Total
9132 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9134 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9135 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9138 2) iASL Compiler/Disassembler and Tools:
9140 Fixed problem reports:
9141 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9144 ----------------------------------------
9145 23 June 2006. Summary of changes for version 20060623:
9147 1) ACPI CA Core Subsystem:
9149 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9150 allows the type to be customized to the host OS for improved efficiency
9151 (since a spinlock is usually a very small object.)
9153 Implemented support for "ignored" bits in the ACPI registers. According
9155 the ACPI specification, these bits should be preserved when writing the
9156 registers via a read/modify/write cycle. There are 3 bits preserved in
9158 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9160 Implemented the initial deployment of new OSL mutex interfaces. Since
9162 host operating systems have separate mutex and semaphore objects, this
9163 feature was requested. The base code now uses mutexes (and the new mutex
9164 interfaces) wherever a binary semaphore was used previously. However, for
9165 the current release, the mutex interfaces are defined as macros to map
9167 to the existing semaphore interfaces. Therefore, no OSL changes are
9169 at this time. (See acpiosxf.h)
9171 Fixed several problems with the support for the control method SyncLevel
9172 parameter. The SyncLevel now works according to the ACPI specification
9174 in concert with the Mutex SyncLevel parameter, since the current
9176 is a property of the executing thread. Mutual exclusion for control
9178 is now implemented with a mutex instead of a semaphore.
9180 Fixed three instances of the use of the C shift operator in the bitfield
9181 support code (exfldio.c) to avoid the use of a shift value larger than
9183 target data width. The behavior of C compilers is undefined in this case
9185 can cause unpredictable results, and therefore the case must be detected
9187 avoided. (Fiodor Suietov)
9189 Added an info message whenever an SSDT or OEM table is loaded dynamically
9190 via the Load() or LoadTable() ASL operators. This should improve
9192 capability since it will show exactly what tables have been loaded
9194 the tables present in the RSDT/XSDT.)
9196 Example Code and Data Size: These are the sizes for the OS-independent
9197 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9198 debug version of the code includes the debug output trace mechanism and
9200 a much larger code and data size.
9203 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9204 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9206 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9207 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9210 2) iASL Compiler/Disassembler and Tools:
9212 No changes for this release.
9214 ----------------------------------------
9215 08 June 2006. Summary of changes for version 20060608:
9217 1) ACPI CA Core Subsystem:
9219 Converted the locking mutex used for the ACPI hardware to a spinlock.
9221 change should eliminate all problems caused by attempting to acquire a
9222 semaphore at interrupt level, and it means that all ACPICA external
9223 interfaces that directly access the ACPI hardware can be safely called
9225 interrupt level. OSL code that implements the semaphore interfaces should
9227 able to eliminate any workarounds for being called at interrupt level.
9229 Fixed a regression introduced in 20060526 where the ACPI device
9230 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9232 did not have an optional _INI method.
9234 Fixed an IndexField issue where a write to the Data Register should be
9235 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9239 Fixed problem reports (Valery Podrezov) integrated:
9240 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9242 Fixed problem reports (Fiodor Suietov) integrated:
9243 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9245 Removed four global mutexes that were obsolete and were no longer being
9248 Example Code and Data Size: These are the sizes for the OS-independent
9249 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9250 debug version of the code includes the debug output trace mechanism and
9252 a much larger code and data size.
9255 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9256 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9258 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9259 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9262 2) iASL Compiler/Disassembler and Tools:
9264 Fixed a fault when using -g option (get tables from registry) on Windows
9267 Fixed problem reports integrated:
9268 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9269 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9271 - Global table revision override (-r) is ignored (BZ 413)
9273 ----------------------------------------
9274 26 May 2006. Summary of changes for version 20060526:
9276 1) ACPI CA Core Subsystem:
9278 Restructured, flattened, and simplified the internal interfaces for
9279 namespace object evaluation - resulting in smaller code, less CPU stack
9281 and fewer interfaces. (With assistance from Mikhail Kouzmich)
9283 Fixed a problem with the CopyObject operator where the first parameter
9285 not typed correctly for the parser, interpreter, compiler, and
9287 Caused various errors and unexpected behavior.
9289 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
9290 produced incorrect results with some C compilers. Since the behavior of C
9291 compilers when the shift value is larger than the datatype width is
9292 apparently not well defined, the interpreter now detects this condition
9294 simply returns zero as expected in all such cases. (BZ 395)
9296 Fixed problem reports (Valery Podrezov) integrated:
9297 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
9298 - Allow interpreter to handle nested method declarations (BZ 5361)
9300 Fixed problem reports (Fiodor Suietov) integrated:
9301 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
9303 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
9305 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
9306 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
9307 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
9308 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
9309 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
9310 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
9311 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
9313 - Status of the Global Initialization Handler call not used (BZ 366)
9314 - Incorrect object parameter to Global Initialization Handler (BZ 367)
9316 Example Code and Data Size: These are the sizes for the OS-independent
9317 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9318 debug version of the code includes the debug output trace mechanism and
9320 a much larger code and data size.
9323 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9324 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9326 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9327 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9330 2) iASL Compiler/Disassembler and Tools:
9332 Modified the parser to allow the names IO, DMA, and IRQ to be used as
9333 namespace identifiers with no collision with existing resource descriptor
9334 macro names. This provides compatibility with other ASL compilers and is
9335 most useful for disassembly/recompilation of existing tables without
9337 errors. (With assistance from Thomas Renninger)
9339 Disassembler: fixed an incorrect disassembly problem with the
9340 DataTableRegion and CopyObject operators. Fixed a possible fault during
9341 disassembly of some Alias operators.
9343 ----------------------------------------
9344 12 May 2006. Summary of changes for version 20060512:
9346 1) ACPI CA Core Subsystem:
9348 Replaced the AcpiOsQueueForExecution interface with a new interface named
9349 AcpiOsExecute. The major difference is that the new interface does not
9351 a Priority parameter, this appeared to be useless and has been replaced
9354 Type parameter. The Type tells the host what type of execution is being
9355 requested, such as global lock handler, notify handler, GPE handler, etc.
9356 This allows the host to queue and execute the request as appropriate for
9358 request type, possibly using different work queues and different
9360 for the various request types. This enables fixes for multithreading
9361 deadlock problems such as BZ #5534, and will require changes to all
9363 OS interface layers. (Alexey Starikovskiy and Bob Moore)
9365 Fixed a possible memory leak associated with the support for the so-
9367 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
9370 Fixed a problem with the Load() operator where a table load from an
9371 operation region could overwrite an internal table buffer by up to 7
9373 and cause alignment faults on IPF systems. (With assistance from Luming
9376 Example Code and Data Size: These are the sizes for the OS-independent
9377 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9378 debug version of the code includes the debug output trace mechanism and
9380 a much larger code and data size.
9383 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9384 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9386 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9387 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9391 2) iASL Compiler/Disassembler and Tools:
9393 Disassembler: Implemented support to cross reference the internal
9395 and automatically generate ASL External() statements for symbols not
9397 within the current table being disassembled. This will simplify the
9398 disassembly and recompilation of interdependent tables such as SSDTs
9400 these statements will no longer have to be added manually.
9402 Disassembler: Implemented experimental support to automatically detect
9403 invocations of external control methods and generate appropriate
9405 statements. This is problematic because the AML cannot be correctly
9407 until the number of arguments for each control method is known.
9409 standalone method invocations and invocations as the source operand of a
9410 Store() statement are supported.
9412 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
9413 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
9414 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
9415 more readable and likely closer to the original ASL source.
9417 ----------------------------------------
9418 21 April 2006. Summary of changes for version 20060421:
9420 1) ACPI CA Core Subsystem:
9422 Removed a device initialization optimization introduced in 20051216 where
9423 the _STA method was not run unless an _INI was also present for the same
9424 device. This optimization could cause problems because it could allow
9426 methods to be run within a not-present device subtree. (If a not-present
9427 device had no _INI, _STA would not be run, the not-present status would
9429 be discovered, and the children of the device would be incorrectly
9432 Implemented a new _STA optimization where namespace subtrees that do not
9433 contain _INI are identified and ignored during device initialization.
9434 Selectively running _STA can significantly improve boot time on large
9435 machines (with assistance from Len Brown.)
9437 Implemented support for the device initialization case where the returned
9438 _STA flags indicate a device not-present but functioning. In this case,
9440 is not run, but the device children are examined for presence, as per the
9443 Implemented an additional change to the IndexField support in order to
9444 conform to MS behavior. The value written to the Index Register is not
9445 simply a byte offset, it is a byte offset in units of the access width of
9446 the parent Index Field. (Fiodor Suietov)
9448 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
9449 interface is called during the creation of all AML operation regions, and
9450 allows the host OS to exert control over what addresses it will allow the
9451 AML code to access. Operation Regions whose addresses are disallowed will
9452 cause a runtime exception when they are actually accessed (will not
9454 or abort table loading.) See oswinxf or osunixxf for an example
9457 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
9458 interface allows the host OS to match the various "optional"
9459 interface/behavior strings for the _OSI predefined control method as
9460 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
9461 for an example implementation.
9463 Restructured and corrected various problems in the exception handling
9465 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
9466 (with assistance from Takayoshi Kochi.)
9468 Modified the Linux source converter to ignore quoted string literals
9470 converting identifiers from mixed to lower case. This will correct
9472 with the disassembler and other areas where such strings must not be
9475 The ACPI_FUNCTION_* macros no longer require quotes around the function
9476 name. This allows the Linux source converter to convert the names, now
9478 the converter ignores quoted strings.
9480 Example Code and Data Size: These are the sizes for the OS-independent
9481 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9482 debug version of the code includes the debug output trace mechanism and
9484 a much larger code and data size.
9488 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9489 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9491 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9492 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9495 2) iASL Compiler/Disassembler and Tools:
9497 Implemented 3 new warnings for iASL, and implemented multiple warning
9501 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
9503 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
9504 check for the possible timeout, a warning is issued.
9506 2) Useless operators: If an ASL operator does not specify an optional
9508 operand and it also does not use the function return value from the
9509 operator, a warning is issued since the operator effectively does
9512 3) Unreferenced objects: If a namespace object is created, but never
9513 referenced, a warning is issued. This is a warning level 2 since there
9515 cases where this is ok, such as when a secondary table is loaded that
9517 the unreferenced objects. Even so, care is taken to only flag objects
9519 don't look like they will ever be used. For example, the reserved methods
9520 (starting with an underscore) are usually not referenced because it is
9521 expected that the OS will invoke them.
9523 ----------------------------------------
9524 31 March 2006. Summary of changes for version 20060331:
9526 1) ACPI CA Core Subsystem:
9528 Implemented header file support for the following additional ACPI tables:
9529 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
9531 all current and known ACPI tables are now defined in the ACPICA headers
9533 are available for use by device drivers and other software.
9535 Implemented support to allow tables that contain ACPI names with invalid
9536 characters to be loaded. Previously, this would cause the table load to
9537 fail, but since there are several known cases of such tables on existing
9538 machines, this change was made to enable ACPI support for them. Also,
9540 matches the behavior of the Microsoft ACPI implementation.
9542 Fixed a couple regressions introduced during the memory optimization in
9544 20060317 release. The namespace node definition required additional
9545 reorganization and an internal datatype that had been changed to 8-bit
9547 restored to 32-bit. (Valery Podrezov)
9549 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
9550 could be passed through to AcpiOsReleaseObject which is unexpected. Such
9551 null pointers are now trapped and ignored, matching the behavior of the
9552 previous implementation before the deployment of AcpiOsReleaseObject.
9553 (Valery Podrezov, Fiodor Suietov)
9555 Fixed a memory mapping leak during the deletion of a SystemMemory
9557 region where a cached memory mapping was not deleted. This became a
9558 noticeable problem for operation regions that are defined within
9560 used control methods. (Dana Meyers)
9562 Reorganized the ACPI table header files into two main files: one for the
9563 ACPI tables consumed by the ACPICA core, and another for the
9565 ACPI tables that are consumed by the drivers and other software. The
9567 FADT definitions were merged into one common section and three different
9568 tables (ACPI 1.0, 1.0+, and 2.0)
9570 Example Code and Data Size: These are the sizes for the OS-independent
9571 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9572 debug version of the code includes the debug output trace mechanism and
9574 a much larger code and data size.
9577 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9578 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9580 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9581 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9584 2) iASL Compiler/Disassembler and Tools:
9586 Disassembler: Implemented support to decode and format all non-AML ACPI
9587 tables (tables other than DSDTs and SSDTs.) This includes the new tables
9588 added to the ACPICA headers, therefore all current and known ACPI tables
9592 Disassembler: The change to allow ACPI names with invalid characters also
9593 enables the disassembly of such tables. Invalid characters within names
9595 changed to '*' to make the name printable; the iASL compiler will still
9596 generate an error for such names, however, since this is an invalid ACPI
9599 Implemented an option for AcpiXtract (-a) to extract all tables found in
9601 input file. The default invocation extracts only the DSDTs and SSDTs.
9603 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
9604 makefile for the AcpiXtract utility.
9606 ----------------------------------------
9607 17 March 2006. Summary of changes for version 20060317:
9609 1) ACPI CA Core Subsystem:
9611 Implemented the use of a cache object for all internal namespace nodes.
9612 Since there are about 1000 static nodes in a typical system, this will
9613 decrease memory use for cache implementations that minimize per-
9615 overhead (such as a slab allocator.)
9617 Removed the reference count mechanism for internal namespace nodes, since
9619 was deemed unnecessary. This reduces the size of each namespace node by
9620 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
9622 and 32 bytes for the 64-bit case.
9624 Optimized several internal data structures to reduce object size on 64-
9626 platforms by packing data within the 64-bit alignment. This includes the
9627 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
9628 instances corresponding to the namespace objects.
9630 Added two new strings for the predefined _OSI method: "Windows 2001.1
9634 Split the allocation tracking mechanism out to a separate file, from
9635 utalloc.c to uttrack.c. This mechanism appears to be only useful for
9636 application-level code. Kernels may wish to not include uttrack.c in
9639 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
9641 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
9644 Code and Data Size: These are the sizes for the acpica.lib produced by
9646 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9648 driver or OSPM code. The debug version of the code includes the debug
9650 trace mechanism and has a much larger code and data size. Note that these
9651 values will vary depending on the efficiency of the compiler and the
9652 compiler options used during generation.
9655 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9656 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9658 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9659 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9662 2) iASL Compiler/Disassembler and Tools:
9664 Implemented an ANSI C version of the acpixtract utility. This version
9666 automatically extract the DSDT and all SSDTs from the input acpidump text
9667 file and dump the binary output to separate files. It can also display a
9668 summary of the input file including the headers for each table found and
9669 will extract any single ACPI table, with any signature. (See
9670 source/tools/acpixtract)
9672 ----------------------------------------
9673 10 March 2006. Summary of changes for version 20060310:
9675 1) ACPI CA Core Subsystem:
9677 Tagged all external interfaces to the subsystem with the new
9678 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
9680 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
9681 macro. The default definition is NULL.
9683 Added the ACPI_THREAD_ID type for the return value from
9685 This allows the host to define this as necessary to simplify kernel
9686 integration. The default definition is ACPI_NATIVE_UINT.
9688 Fixed two interpreter problems related to error processing, the deletion
9690 objects, and placing invalid pointers onto the internal operator result
9691 stack. BZ 6028, 6151 (Valery Podrezov)
9693 Increased the reference count threshold where a warning is emitted for
9695 reference counts in order to eliminate unnecessary warnings on systems
9697 large namespaces (especially 64-bit.) Increased the value from 0x400 to
9700 Due to universal disagreement as to the meaning of the 'c' in the
9702 function, the ACPI_MEM_CALLOCATE macro has been renamed to
9703 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
9704 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
9707 Code and Data Size: These are the sizes for the acpica.lib produced by
9709 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9711 driver or OSPM code. The debug version of the code includes the debug
9713 trace mechanism and has a much larger code and data size. Note that these
9714 values will vary depending on the efficiency of the compiler and the
9715 compiler options used during generation.
9718 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9719 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9721 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9722 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9725 2) iASL Compiler/Disassembler:
9727 Disassembler: implemented support for symbolic resource descriptor
9728 references. If a CreateXxxxField operator references a fixed offset
9731 resource descriptor, a name is assigned to the descriptor and the offset
9733 translated to the appropriate resource tag and pathname. The addition of
9734 this support brings the disassembled code very close to the original ASL
9735 source code and helps eliminate run-time errors when the disassembled
9737 is modified (and recompiled) in such a way as to invalidate the original
9740 Implemented support for a Descriptor Name as the last parameter to the
9742 Register() macro. This parameter was inadvertently left out of the ACPI
9743 specification, and will be added for ACPI 3.0b.
9745 Fixed a problem where the use of the "_OSI" string (versus the full path
9746 "\_OSI") caused an internal compiler error. ("No back ptr to op")
9748 Fixed a problem with the error message that occurs when an invalid string
9750 used for a _HID object (such as one with an embedded asterisk:
9752 The correct message is now displayed.
9754 ----------------------------------------
9755 17 February 2006. Summary of changes for version 20060217:
9757 1) ACPI CA Core Subsystem:
9759 Implemented a change to the IndexField support to match the behavior of
9761 Microsoft AML interpreter. The value written to the Index register is now
9763 byte offset, no longer an index based upon the width of the Data
9765 This should fix IndexField problems seen on some machines where the Data
9766 register is not exactly one byte wide. The ACPI specification will be
9767 clarified on this point.
9769 Fixed a problem where several resource descriptor types could overrun the
9770 internal descriptor buffer due to size miscalculation: VendorShort,
9771 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
9772 affect all platforms.
9774 Fixed a problem where individual resource descriptors were misaligned
9776 the internal buffer, causing alignment faults on IA64 platforms.
9778 Code and Data Size: These are the sizes for the acpica.lib produced by
9780 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9782 driver or OSPM code. The debug version of the code includes the debug
9784 trace mechanism and has a much larger code and data size. Note that these
9785 values will vary depending on the efficiency of the compiler and the
9786 compiler options used during generation.
9789 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9790 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9792 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9793 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9796 2) iASL Compiler/Disassembler:
9798 Implemented support for new reserved names: _WDG and _WED are Microsoft
9799 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
9800 defined method (Throttling Depth Limit.)
9802 Fixed a problem where a zero-length VendorShort or VendorLong resource
9803 descriptor was incorrectly emitted as a descriptor of length one.
9805 ----------------------------------------
9806 10 February 2006. Summary of changes for version 20060210:
9808 1) ACPI CA Core Subsystem:
9810 Removed a couple of extraneous ACPI_ERROR messages that appeared during
9811 normal execution. These became apparent after the conversion from
9814 Fixed a problem where the CreateField operator could hang if the BitIndex
9816 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
9818 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
9819 failed with an exception. This also fixes a couple of related RefOf and
9820 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
9822 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
9824 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
9828 Implemented a memory cleanup at the end of the execution of each
9830 of an AML While() loop, preventing the accumulation of outstanding
9832 (Valery Podrezov, BZ 5427)
9834 Eliminated a chunk of duplicate code in the object resolution code.
9838 Fixed several warnings during the 64-bit code generation.
9840 The AcpiSrc source code conversion tool now inserts one line of
9842 after an if() statement that is followed immediately by a comment,
9844 readability of the Linux code.
9846 Code and Data Size: The current and previous library sizes for the core
9847 subsystem are shown below. These are the code and data sizes for the
9848 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9850 values do not include any ACPI driver or OSPM code. The debug version of
9852 code includes the debug output trace mechanism and has a much larger code
9853 and data size. Note that these values will vary depending on the
9855 of the compiler and the compiler options used during generation.
9858 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9859 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9861 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9862 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9865 2) iASL Compiler/Disassembler:
9867 Fixed a problem with the disassembly of a BankField operator with a
9869 expression for the BankValue parameter.
9871 ----------------------------------------
9872 27 January 2006. Summary of changes for version 20060127:
9874 1) ACPI CA Core Subsystem:
9876 Implemented support in the Resource Manager to allow unresolved
9878 references within resource package objects for the _PRT method. This
9880 is in addition to the previously implemented unresolved reference support
9881 within the AML parser. If the interpreter slack mode is enabled, these
9882 unresolved references will be passed through to the caller as a NULL
9886 Implemented and deployed new macros and functions for error and warning
9887 messages across the subsystem. These macros are simpler and generate less
9888 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
9889 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
9890 macros remain defined to allow ACPI drivers time to migrate to the new
9893 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
9895 Acquire/Release Lock OSL interfaces.
9897 Fixed a problem where Alias ASL operators are sometimes not correctly
9898 resolved, in both the interpreter and the iASL compiler.
9900 Fixed several problems with the implementation of the
9901 ConcatenateResTemplate
9902 ASL operator. As per the ACPI specification, zero length buffers are now
9903 treated as a single EndTag. One-length buffers always cause a fatal
9904 exception. Non-zero length buffers that do not end with a full 2-byte
9906 cause a fatal exception.
9908 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
9909 interface. (With assistance from Thomas Renninger)
9911 Code and Data Size: The current and previous library sizes for the core
9912 subsystem are shown below. These are the code and data sizes for the
9913 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9915 values do not include any ACPI driver or OSPM code. The debug version of
9917 code includes the debug output trace mechanism and has a much larger code
9918 and data size. Note that these values will vary depending on the
9920 of the compiler and the compiler options used during generation.
9923 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9924 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9926 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9927 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9930 2) iASL Compiler/Disassembler:
9932 Fixed an internal error that was generated for any forward references to
9936 ----------------------------------------
9937 13 January 2006. Summary of changes for version 20060113:
9939 1) ACPI CA Core Subsystem:
9941 Added 2006 copyright to all module headers and signons. This affects
9942 virtually every file in the ACPICA core subsystem, iASL compiler, and the
9945 Enhanced the ACPICA error reporting in order to simplify user migration
9947 the non-debug version of ACPICA. Replaced all instances of the
9948 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
9950 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
9951 respectively. This preserves all error and warning messages in the non-
9953 version of the ACPICA code (this has been referred to as the "debug lite"
9954 option.) Over 200 cases were converted to create a total of over 380
9955 error/warning messages across the ACPICA code. This increases the code
9957 data size of the default non-debug version of the code somewhat (about
9959 but all error/warning reporting may be disabled if desired (and code
9960 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
9961 configuration option. The size of the debug version of ACPICA remains
9965 Fixed a memory leak within the AML Debugger "Set" command. One object was
9966 not properly deleted for every successful invocation of the command.
9968 Code and Data Size: The current and previous library sizes for the core
9969 subsystem are shown below. These are the code and data sizes for the
9970 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9972 values do not include any ACPI driver or OSPM code. The debug version of
9974 code includes the debug output trace mechanism and has a much larger code
9975 and data size. Note that these values will vary depending on the
9977 of the compiler and the compiler options used during generation.
9980 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9981 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9983 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9984 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9987 2) iASL Compiler/Disassembler:
9989 The compiler now officially supports the ACPI 3.0a specification that was
9990 released on December 30, 2005. (Specification is available at
9993 ----------------------------------------
9994 16 December 2005. Summary of changes for version 20051216:
9996 1) ACPI CA Core Subsystem:
9998 Implemented optional support to allow unresolved names within ASL Package
9999 objects. A null object is inserted in the package when a named reference
10000 cannot be located in the current namespace. Enabled via the interpreter
10001 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10003 that contain such code.
10005 Implemented an optimization to the initialization sequence that can
10007 boot time. During ACPI device initialization, the _STA method is now run
10009 and only if the _INI method exists. The _STA method is used to determine
10011 the device is present; An _INI can only be run if _STA returns present,
10013 it is a waste of time to run the _STA method if the _INI does not exist.
10014 (Prototype and assistance from Dong Wei)
10016 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10018 available in the current compiler. Otherwise, the default (void *) cast
10022 Fixed some possible memory leaks found within the execution path of the
10023 Break, Continue, If, and CreateField operators. (Valery Podrezov)
10025 Fixed a problem introduced in the 20051202 release where an exception is
10026 generated during method execution if a control method attempts to declare
10029 Moved resource descriptor string constants that are used by both the AML
10030 disassembler and AML debugger to the common utilities directory so that
10031 these components are independent.
10033 Implemented support in the AcpiExec utility (-e switch) to globally
10035 exceptions during control method execution (method is not aborted.)
10037 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10040 Code and Data Size: The current and previous library sizes for the core
10041 subsystem are shown below. These are the code and data sizes for the
10042 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10044 values do not include any ACPI driver or OSPM code. The debug version of
10046 code includes the debug output trace mechanism and has a much larger code
10047 and data size. Note that these values will vary depending on the
10049 of the compiler and the compiler options used during generation.
10052 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10053 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10055 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10056 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10059 2) iASL Compiler/Disassembler:
10061 Fixed a problem where a CPU stack overflow fault could occur if a
10063 method call was made from within a Return statement.
10065 ----------------------------------------
10066 02 December 2005. Summary of changes for version 20051202:
10068 1) ACPI CA Core Subsystem:
10070 Modified the parsing of control methods to no longer create namespace
10071 objects during the first pass of the parse. Objects are now created only
10072 during the execute phase, at the moment the namespace creation operator
10074 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10076 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10077 reentrant control methods are protected by an AML mutex. The mutex will
10079 correctly block multiple threads from attempting to create the same
10083 Increased the number of available Owner Ids for namespace object tracking
10084 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10086 some machines with a large number of ACPI tables (either static or
10089 Fixed a problem with the AcpiExec utility where a fault could occur when
10091 -b switch (batch mode) is used.
10093 Enhanced the namespace dump routine to output the owner ID for each
10096 Code and Data Size: The current and previous library sizes for the core
10097 subsystem are shown below. These are the code and data sizes for the
10098 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10100 values do not include any ACPI driver or OSPM code. The debug version of
10102 code includes the debug output trace mechanism and has a much larger code
10103 and data size. Note that these values will vary depending on the
10105 of the compiler and the compiler options used during generation.
10108 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10109 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10111 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10112 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10115 2) iASL Compiler/Disassembler:
10117 Fixed a parse error during compilation of certain Switch/Case constructs.
10119 simplify the parse, the grammar now allows for multiple Default
10121 and this error is now detected and flagged during the analysis phase.
10123 Disassembler: The disassembly now includes the contents of the original
10124 table header within a comment at the start of the file. This includes the
10125 name and version of the original ASL compiler.
10127 ----------------------------------------
10128 17 November 2005. Summary of changes for version 20051117:
10130 1) ACPI CA Core Subsystem:
10132 Fixed a problem in the AML parser where the method thread count could be
10133 decremented below zero if any errors occurred during the method parse
10135 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10137 This also fixed a related regression with the mechanism that detects and
10138 corrects methods that cannot properly handle reentrancy (related to the
10139 deployment of the new OwnerId mechanism.)
10141 Eliminated the pre-parsing of control methods (to detect errors) during
10142 table load. Related to the problem above, this was causing unwind issues
10144 any errors occurred during the parse, and it seemed to be overkill. A
10146 load should not be aborted if there are problems with any single control
10147 method, thus rendering this feature rather pointless.
10149 Fixed a problem with the new table-driven resource manager where an
10151 buffer overflow could occur for small resource templates.
10153 Implemented a new external interface, AcpiGetVendorResource. This
10155 will find and return a vendor-defined resource descriptor within a _CRS
10157 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10160 Removed the length limit (200) on string objects as per the upcoming ACPI
10161 3.0A specification. This affects the following areas of the interpreter:
10163 any implicit conversion of a Buffer to a String, 2) a String object
10165 of the ASL Concatentate operator, 3) the String object result of the ASL
10168 Fixed a problem in the Windows OS interface layer (OSL) where a
10170 on a semaphore object would incorrectly timeout. This allows the
10171 multithreading features of the AcpiExec utility to work properly under
10174 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10175 the recently added file named "utresrc.c".
10177 Code and Data Size: The current and previous library sizes for the core
10178 subsystem are shown below. These are the code and data sizes for the
10179 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10181 values do not include any ACPI driver or OSPM code. The debug version of
10183 code includes the debug output trace mechanism and has a much larger code
10184 and data size. Note that these values will vary depending on the
10186 of the compiler and the compiler options used during generation.
10189 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10190 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10192 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10193 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10196 2) iASL Compiler/Disassembler:
10198 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10199 specification. For the iASL compiler, this means that string literals
10201 the source ASL can be of any length.
10203 Enhanced the listing output to dump the AML code for resource descriptors
10204 immediately after the ASL code for each descriptor, instead of in a block
10206 the end of the entire resource template.
10208 Enhanced the compiler debug output to dump the entire original parse tree
10209 constructed during the parse phase, before any transforms are applied to
10211 tree. The transformed tree is dumped also.
10213 ----------------------------------------
10214 02 November 2005. Summary of changes for version 20051102:
10216 1) ACPI CA Core Subsystem:
10218 Modified the subsystem initialization sequence to improve GPE support.
10220 GPE initialization has been split into two parts in order to defer
10222 of the _PRW methods (Power Resources for Wake) until after the hardware
10224 fully initialized and the SCI handler is installed. This allows the _PRW
10225 methods to access fields protected by the Global Lock. This will fix
10227 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10229 Converted the ACPI internal object disassemble and display code within
10231 AML debugger to fully table-driven operation, reducing code size and
10232 increasing maintainability.
10234 Fixed a regression with the ConcatenateResTemplate() ASL operator
10236 in the 20051021 release.
10238 Implemented support for "local" internal ACPI object types within the
10239 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10240 These local types include RegionFields, BankFields, IndexFields, Alias,
10244 Moved common AML resource handling code into a new file, "utresrc.c".
10246 code is shared by both the Resource Manager and the AML Debugger.
10248 Code and Data Size: The current and previous library sizes for the core
10249 subsystem are shown below. These are the code and data sizes for the
10250 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10252 values do not include any ACPI driver or OSPM code. The debug version of
10254 code includes the debug output trace mechanism and has a much larger code
10255 and data size. Note that these values will vary depending on the
10257 of the compiler and the compiler options used during generation.
10260 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10261 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10263 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10264 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10267 2) iASL Compiler/Disassembler:
10269 Fixed a problem with very large initializer lists (more than 4000
10271 for both Buffer and Package objects where the parse stack could overflow.
10273 Enhanced the pre-compile source code scan for non-ASCII characters to
10275 characters within comment fields. The scan is now always performed and is
10277 longer optional, detecting invalid characters within a source file
10278 immediately rather than during the parse phase or later.
10280 Enhanced the ASL grammar definition to force early reductions on all
10282 style grammar elements so that the overall parse stack usage is greatly
10283 reduced. This should improve performance and reduce the possibility of
10287 Eliminated all reduce/reduce conflicts in the iASL parser generation.
10289 with the addition of a %expected statement, the compiler generates from
10290 source with no warnings.
10292 Fixed a possible segment fault in the disassembler if the input filename
10293 does not contain a "dot" extension (Thomas Renninger).
10295 ----------------------------------------
10296 21 October 2005. Summary of changes for version 20051021:
10298 1) ACPI CA Core Subsystem:
10300 Implemented support for the EM64T and other x86-64 processors. This
10301 essentially entails recognizing that these processors support non-aligned
10302 memory transfers. Previously, all 64-bit processors were assumed to lack
10303 hardware support for non-aligned transfers.
10305 Completed conversion of the Resource Manager to nearly full table-driven
10306 operation. Specifically, the resource conversion code (convert AML to
10307 internal format and the reverse) and the debug code to dump internal
10308 resource descriptors are fully table-driven, reducing code and data size
10310 improving maintainability.
10312 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
10314 on 64-bit processors instead of a fixed 32-bit word. (With assistance
10316 Alexey Starikovskiy)
10318 Implemented support within the resource conversion code for the Type-
10319 Specific byte within the various ACPI 3.0 *WordSpace macros.
10321 Fixed some issues within the resource conversion code for the type-
10323 flags for both Memory and I/O address resource descriptors. For Memory,
10324 implemented support for the MTP and TTP flags. For I/O, split the TRS and
10325 TTP flags into two separate fields.
10327 Code and Data Size: The current and previous library sizes for the core
10328 subsystem are shown below. These are the code and data sizes for the
10329 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10331 values do not include any ACPI driver or OSPM code. The debug version of
10333 code includes the debug output trace mechanism and has a much larger code
10334 and data size. Note that these values will vary depending on the
10336 of the compiler and the compiler options used during generation.
10339 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10340 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10342 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10343 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10347 2) iASL Compiler/Disassembler:
10349 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
10351 corresponding ResourceSource string was not also present in a resource
10352 descriptor declaration. This restriction caused problems with existing
10353 AML/ASL code that includes the Index byte without the string. When such
10355 was disassembled, it could not be compiled without modification. Further,
10356 the modified code created a resource template with a different size than
10358 original, breaking code that used fixed offsets into the resource
10362 Removed a recent feature of the disassembler to ignore a lone
10364 byte. This byte is now emitted if present so that the exact AML can be
10365 reproduced when the disassembled code is recompiled.
10367 Improved comments and text alignment for the resource descriptor code
10368 emitted by the disassembler.
10370 Implemented disassembler support for the ACPI 3.0 AccessSize field within
10372 Register() resource descriptor.
10374 ----------------------------------------
10375 30 September 2005. Summary of changes for version 20050930:
10377 1) ACPI CA Core Subsystem:
10379 Completed a major overhaul of the Resource Manager code - specifically,
10380 optimizations in the area of the AML/internal resource conversion code.
10382 code has been optimized to simplify and eliminate duplicated code, CPU
10384 use has been decreased by optimizing function parameters and local
10385 variables, and naming conventions across the manager have been
10387 for clarity and ease of maintenance (this includes function, parameter,
10388 variable, and struct/typedef names.) The update may force changes in some
10389 driver code, depending on how resources are handled by the host OS.
10391 All Resource Manager dispatch and information tables have been moved to a
10392 single location for clarity and ease of maintenance. One new file was
10393 created, named "rsinfo.c".
10395 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
10396 guarantee that the argument is not evaluated twice, making them less
10398 to macro side-effects. However, since there exists the possibility of
10399 additional stack use if a particular compiler cannot optimize them (such
10401 in the debug generation case), the original macros are optionally
10403 Note that some invocations of the return_VALUE macro may now cause size
10404 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
10406 eliminate these. (From Randy Dunlap)
10408 Implemented a new mechanism to enable debug tracing for individual
10410 methods. A new external interface, AcpiDebugTrace, is provided to enable
10411 this mechanism. The intent is to allow the host OS to easily enable and
10412 disable tracing for problematic control methods. This interface can be
10413 easily exposed to a user or debugger interface if desired. See the file
10414 psxface.c for details.
10416 AcpiUtCallocate will now return a valid pointer if a length of zero is
10417 specified - a length of one is used and a warning is issued. This matches
10418 the behavior of AcpiUtAllocate.
10420 Code and Data Size: The current and previous library sizes for the core
10421 subsystem are shown below. These are the code and data sizes for the
10422 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10424 values do not include any ACPI driver or OSPM code. The debug version of
10426 code includes the debug output trace mechanism and has a much larger code
10427 and data size. Note that these values will vary depending on the
10429 of the compiler and the compiler options used during generation.
10432 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10433 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10435 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10436 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10439 2) iASL Compiler/Disassembler:
10441 A remark is issued if the effective compile-time length of a package or
10442 buffer is zero. Previously, this was a warning.
10444 ----------------------------------------
10445 16 September 2005. Summary of changes for version 20050916:
10447 1) ACPI CA Core Subsystem:
10449 Fixed a problem within the Resource Manager where support for the Generic
10450 Register descriptor was not fully implemented. This descriptor is now
10452 recognized, parsed, disassembled, and displayed.
10454 Completely restructured the Resource Manager code to utilize table-driven
10455 dispatch and lookup, eliminating many of the large switch() statements.
10457 reduces overall subsystem code size and code complexity. Affects the
10458 resource parsing and construction, disassembly, and debug dump output.
10460 Cleaned up and restructured the debug dump output for all resource
10461 descriptors. Improved readability of the output and reduced code size.
10463 Fixed a problem where changes to internal data structures caused the
10464 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
10466 Code and Data Size: The current and previous library sizes for the core
10467 subsystem are shown below. These are the code and data sizes for the
10468 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10470 values do not include any ACPI driver or OSPM code. The debug version of
10472 code includes the debug output trace mechanism and has a much larger code
10473 and data size. Note that these values will vary depending on the
10475 of the compiler and the compiler options used during generation.
10478 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10479 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10481 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10482 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10485 2) iASL Compiler/Disassembler:
10487 Updated the disassembler to automatically insert an EndDependentFn()
10489 into the ASL stream if this macro is missing in the original AML code,
10490 simplifying compilation of the resulting ASL module.
10492 Fixed a problem in the disassembler where a disassembled ResourceSource
10493 string (within a large resource descriptor) was not surrounded by quotes
10495 not followed by a comma, causing errors when the resulting ASL module was
10496 compiled. Also, escape sequences within a ResourceSource string are now
10497 handled correctly (especially "\\")
10499 ----------------------------------------
10500 02 September 2005. Summary of changes for version 20050902:
10502 1) ACPI CA Core Subsystem:
10504 Fixed a problem with the internal Owner ID allocation and deallocation
10505 mechanisms for control method execution and recursive method invocation.
10506 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
10507 messages seen on some systems. Recursive method invocation depth is
10508 currently limited to 255. (Alexey Starikovskiy)
10510 Completely eliminated all vestiges of support for the "module-level
10511 executable code" until this support is fully implemented and debugged.
10513 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
10514 some systems that invoke this support.
10516 Fixed a problem within the resource manager code where the transaction
10518 for a 64-bit address descriptor were handled incorrectly in the type-
10519 specific flag byte.
10521 Consolidated duplicate code within the address descriptor resource
10523 code, reducing overall subsystem code size.
10525 Fixed a fault when using the AML debugger "disassemble" command to
10526 disassemble individual control methods.
10528 Removed references to the "release_current" directory within the Unix
10531 Code and Data Size: The current and previous core subsystem library sizes
10532 are shown below. These are the code and data sizes for the acpica.lib
10533 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
10534 include any ACPI driver or OSPM code. The debug version of the code
10536 the debug output trace mechanism and has a much larger code and data
10538 Note that these values will vary depending on the efficiency of the
10540 and the compiler options used during generation.
10543 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10544 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10546 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10547 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10550 2) iASL Compiler/Disassembler:
10552 Implemented an error check for illegal duplicate values in the interrupt
10554 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
10557 Implemented error checking for the Irq() and IrqNoFlags() macros to
10559 too many values in the interrupt list (16 max) and invalid values in the
10560 list (range 0 - 15)
10562 The maximum length string literal within an ASL file is now restricted to
10563 200 characters as per the ACPI specification.
10565 Fixed a fault when using the -ln option (generate namespace listing).
10567 Implemented an error check to determine if a DescriptorName within a
10568 resource descriptor has already been used within the current scope.
10570 ----------------------------------------
10571 15 August 2005. Summary of changes for version 20050815:
10573 1) ACPI CA Core Subsystem:
10575 Implemented a full bytewise compare to determine if a table load request
10577 attempting to load a duplicate table. The compare is performed if the
10579 signatures and table lengths match. This will allow different tables with
10580 the same OEM Table ID and revision to be loaded - probably against the
10582 specification, but discovered in the field nonetheless.
10584 Added the changes.txt logfile to each of the zipped release packages.
10586 Code and Data Size: Current and previous core subsystem library sizes are
10587 shown below. These are the code and data sizes for the acpica.lib
10589 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10590 any ACPI driver or OSPM code. The debug version of the code includes the
10591 debug output trace mechanism and has a much larger code and data size.
10593 that these values will vary depending on the efficiency of the compiler
10595 the compiler options used during generation.
10598 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10599 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10601 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10602 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10605 2) iASL Compiler/Disassembler:
10607 Fixed a problem where incorrect AML code could be generated for Package
10608 objects if optimization is disabled (via the -oa switch).
10610 Fixed a problem with where incorrect AML code is generated for variable-
10611 length packages when the package length is not specified and the number
10613 initializer values is greater than 255.
10616 ----------------------------------------
10617 29 July 2005. Summary of changes for version 20050729:
10619 1) ACPI CA Core Subsystem:
10621 Implemented support to ignore an attempt to install/load a particular
10623 table more than once. Apparently there exists BIOS code that repeatedly
10624 attempts to load the same SSDT upon certain events. With assistance from
10625 Venkatesh Pallipadi.
10627 Restructured the main interface to the AML parser in order to correctly
10628 handle all exceptional conditions. This will prevent leakage of the
10630 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
10632 machines. With assistance from Alexey Starikovskiy.
10634 Support for "module level code" has been disabled in this version due to
10636 number of issues that have appeared on various machines. The support can
10638 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
10639 compilation. When the issues are fully resolved, the code will be enabled
10643 Modified the internal functions for debug print support to define the
10644 FunctionName parameter as a (const char *) for compatibility with
10646 built-in macros such as __FUNCTION__, etc.
10648 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
10650 Implemented support to display an object count summary for the AML
10652 commands Object and Methods.
10654 Code and Data Size: Current and previous core subsystem library sizes are
10655 shown below. These are the code and data sizes for the acpica.lib
10657 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10658 any ACPI driver or OSPM code. The debug version of the code includes the
10659 debug output trace mechanism and has a much larger code and data size.
10661 that these values will vary depending on the efficiency of the compiler
10663 the compiler options used during generation.
10666 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10667 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10669 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10670 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10673 2) iASL Compiler/Disassembler:
10675 Fixed a regression that appeared in the 20050708 version of the compiler
10676 where an error message was inadvertently emitted for invocations of the
10678 reserved control method.
10680 ----------------------------------------
10681 08 July 2005. Summary of changes for version 20050708:
10683 1) ACPI CA Core Subsystem:
10685 The use of the CPU stack in the debug version of the subsystem has been
10686 considerably reduced. Previously, a debug structure was declared in every
10687 function that used the debug macros. This structure has been removed in
10688 favor of declaring the individual elements as parameters to the debug
10689 functions. This reduces the cumulative stack use during nested execution
10691 ACPI function calls at the cost of a small increase in the code size of
10693 debug version of the subsystem. With assistance from Alexey Starikovskiy
10697 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
10698 headers to define a macro that will return the current function name at
10699 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
10701 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
10702 compiler-dependent header, the function name is saved on the CPU stack
10704 pointer per function.) This mechanism is used because apparently there
10705 exists no standard ANSI-C defined macro that that returns the function
10708 Redesigned and reimplemented the "Owner ID" mechanism used to track
10709 namespace objects created/deleted by ACPI tables and control method
10710 execution. A bitmap is now used to allocate and free the IDs, thus
10712 the wraparound problem present in the previous implementation. The size
10714 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
10717 Removed the UINT32_BIT and UINT16_BIT types that were used for the
10719 flag definitions within the headers for the predefined ACPI tables. These
10720 have been replaced by UINT8_BIT in order to increase the code portability
10722 the subsystem. If the use of UINT8 remains a problem, we may be forced to
10723 eliminate bitfields entirely because of a lack of portability.
10725 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
10727 is a frequently used function and this improvement increases the
10729 of the entire subsystem (Alexey Starikovskiy).
10731 Fixed several possible memory leaks and the inverse - premature object
10732 deletion (Alexey Starikovskiy).
10734 Code and Data Size: Current and previous core subsystem library sizes are
10735 shown below. These are the code and data sizes for the acpica.lib
10737 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10738 any ACPI driver or OSPM code. The debug version of the code includes the
10739 debug output trace mechanism and has a much larger code and data size.
10741 that these values will vary depending on the efficiency of the compiler
10743 the compiler options used during generation.
10746 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10747 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10749 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10750 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10752 ----------------------------------------
10753 24 June 2005. Summary of changes for version 20050624:
10755 1) ACPI CA Core Subsystem:
10757 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
10758 the host-defined cache object. This allows the OSL implementation to
10760 and type this object in any manner desired, simplifying the OSL
10761 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
10762 Linux, and should be defined in the OS-specific header file for other
10763 operating systems as required.
10765 Changed the interface to AcpiOsAcquireObject to directly return the
10766 requested object as the function return (instead of ACPI_STATUS.) This
10767 change was made for performance reasons, since this is the purpose of the
10768 interface in the first place. AcpiOsAcquireObject is now similar to the
10769 AcpiOsAllocate interface.
10771 Implemented a new AML debugger command named Businfo. This command
10773 information about all devices that have an associate _PRT object. The
10775 _HID, _UID, and _CID are displayed for these devices.
10777 Modified the initialization sequence in AcpiInitializeSubsystem to call
10779 OSL interface AcpiOslInitialize first, before any local initialization.
10781 change was required because the global initialization now calls OSL
10784 Enhanced the Dump command to display the entire contents of Package
10786 (including all sub-objects and their values.)
10788 Restructured the code base to split some files because of size and/or
10789 because the code logically belonged in a separate file. New files are
10791 below. All makefiles and project files included in the ACPI CA release
10794 utilities/utcache.c /* Local cache interfaces */
10795 utilities/utmutex.c /* Local mutex support */
10796 utilities/utstate.c /* State object support */
10797 interpreter/parser/psloop.c /* Main AML parse loop */
10799 Code and Data Size: Current and previous core subsystem library sizes are
10800 shown below. These are the code and data sizes for the acpica.lib
10802 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10803 any ACPI driver or OSPM code. The debug version of the code includes the
10804 debug output trace mechanism and has a much larger code and data size.
10806 that these values will vary depending on the efficiency of the compiler
10808 the compiler options used during generation.
10811 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10812 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10814 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10815 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10818 2) iASL Compiler/Disassembler:
10820 Fixed a regression introduced in version 20050513 where the use of a
10822 object within a Case() statement caused a compile time exception. The
10823 original behavior has been restored (a Match() operator is emitted.)
10825 ----------------------------------------
10826 17 June 2005. Summary of changes for version 20050617:
10828 1) ACPI CA Core Subsystem:
10830 Moved the object cache operations into the OS interface layer (OSL) to
10832 the host OS to handle these operations if desired (for example, the Linux
10833 OSL will invoke the slab allocator). This support is optional; the
10835 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
10837 code in the ACPI CA core. The new OSL interfaces are shown below. See
10838 utalloc.c for an example implementation, and acpiosxf.h for the exact
10839 interface definitions. With assistance from Alexey Starikovskiy.
10843 AcpiOsAcquireObject
10844 AcpiOsReleaseObject
10846 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
10848 and restore a flags parameter. This fits better with many OS lock models.
10849 Note: the current execution state (interrupt handler or not) is no longer
10850 passed to these interfaces. If necessary, the OSL must determine this
10852 by itself, a simple and fast operation. With assistance from Alexey
10855 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
10856 present if the revision of the RSDP was 2 or greater. According to the
10858 specification, the XSDT is optional in all cases, and the table manager
10859 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
10860 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
10864 Fixed an interpreter problem with the Mid() operator in the case of an
10866 string where the resulting output string is of zero length. It now
10868 returns a valid, null terminated string object instead of a string object
10869 with a null pointer.
10871 Fixed a problem with the control method argument handling to allow a
10873 to an Arg object that already contains an object of type Device. The
10875 object is now correctly overwritten. Previously, an error was returned.
10878 Enhanced the debugger Find command to emit object values in addition to
10880 found object pathnames. The output format is the same as the dump
10884 Enhanced the debugger Set command. It now has the ability to set the
10886 of any Named integer object in the namespace (Previously, only method
10888 and args could be set.)
10890 Code and Data Size: Current and previous core subsystem library sizes are
10891 shown below. These are the code and data sizes for the acpica.lib
10893 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10894 any ACPI driver or OSPM code. The debug version of the code includes the
10895 debug output trace mechanism and has a much larger code and data size.
10897 that these values will vary depending on the efficiency of the compiler
10899 the compiler options used during generation.
10902 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10903 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10905 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10906 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10909 2) iASL Compiler/Disassembler:
10911 Fixed a regression in the disassembler where if/else/while constructs
10913 output incorrectly. This problem was introduced in the previous release
10914 (20050526). This problem also affected the single-step disassembly in the
10917 Fixed a problem where compiling the reserved _OSI method would randomly
10919 rarely) produce compile errors.
10921 Enhanced the disassembler to emit compilable code in the face of
10923 AML resource descriptors. If the optional ResourceSourceIndex is present,
10924 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
10925 disassembly. Otherwise, the resulting code cannot be compiled without
10928 ----------------------------------------
10929 26 May 2005. Summary of changes for version 20050526:
10931 1) ACPI CA Core Subsystem:
10933 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
10934 the module level (not within a control method.) These opcodes are
10936 exactly once at the time the table is loaded. This type of code was legal
10938 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
10940 order to provide backwards compatibility with earlier BIOS
10942 This eliminates the "Encountered executable code at module level" warning
10943 that was previously generated upon detection of such code.
10945 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
10946 inadvertently be generated during the lookup of namespace objects in the
10947 second pass parse of ACPI tables and control methods. It appears that
10949 problem could occur during the resolution of forward references to
10953 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
10954 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
10955 allows the deadlock detection debug code to be compiled out in the normal
10956 case, improving mutex performance (and overall subsystem performance)
10959 Implemented a handful of miscellaneous fixes for possible memory leaks on
10960 error conditions and error handling control paths. These fixes were
10961 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
10963 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
10965 to prevent a fault in this error case.
10967 Code and Data Size: Current and previous core subsystem library sizes are
10968 shown below. These are the code and data sizes for the acpica.lib
10970 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10971 any ACPI driver or OSPM code. The debug version of the code includes the
10972 debug output trace mechanism and has a much larger code and data size.
10974 that these values will vary depending on the efficiency of the compiler
10976 the compiler options used during generation.
10979 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10980 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10982 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10983 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10986 2) iASL Compiler/Disassembler:
10988 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
10989 the module level (not within a control method.) These operators will be
10990 executed once at the time the table is loaded. This type of code was
10992 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
10993 compiler in order to provide backwards compatibility with earlier BIOS
10997 The ACPI integer width (specified via the table revision ID or the -r
10998 override, 32 or 64 bits) is now used internally during compile-time
11000 folding to ensure that constants are truncated to 32 bits if necessary.
11001 Previously, the revision ID value was only emitted in the AML table
11004 An error message is now generated for the Mutex and Method operators if
11006 SyncLevel parameter is outside the legal range of 0 through 15.
11008 Fixed a problem with the Method operator ParameterTypes list handling
11010 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11012 The actual underlying implementation of method argument typechecking is
11013 still under development, however.
11015 ----------------------------------------
11016 13 May 2005. Summary of changes for version 20050513:
11018 1) ACPI CA Core Subsystem:
11020 Implemented support for PCI Express root bridges -- added support for
11022 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
11024 The interpreter now automatically truncates incoming 64-bit constants to
11026 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
11028 also affects the iASL compiler constant folding. (Note: as per below, the
11029 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
11031 Fixed a problem where string and buffer objects with "static" pointers
11032 (pointers to initialization data within an ACPI table) were not handled
11033 consistently. The internal object copy operation now always copies the
11035 to a newly allocated buffer, regardless of whether the source object is
11038 Fixed a problem with the FromBCD operator where an implicit result
11039 conversion was improperly performed while storing the result to the
11041 operand. Since this is an "explicit conversion" operator, the implicit
11042 conversion should never be performed on the output.
11044 Fixed a problem with the CopyObject operator where a copy to an existing
11045 named object did not always completely overwrite the existing object
11047 at name. Specifically, a buffer-to-buffer copy did not delete the
11051 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11053 structs for consistency.
11055 Code and Data Size: Current and previous core subsystem library sizes are
11056 shown below. These are the code and data sizes for the acpica.lib
11058 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11059 any ACPI driver or OSPM code. The debug version of the code includes the
11060 debug output trace mechanism and has a much larger code and data size.
11062 that these values will vary depending on the efficiency of the compiler
11064 the compiler options used during generation.
11067 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11068 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11069 Current Release: (Same sizes)
11070 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11071 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11074 2) iASL Compiler/Disassembler:
11076 The compiler now emits a warning if an attempt is made to generate a 64-
11078 integer constant from within a 32-bit ACPI table (Revision < 2). The
11080 is truncated to 32 bits.
11082 Fixed a problem with large package objects: if the static length of the
11083 package is greater than 255, the "variable length package" opcode is
11084 emitted. Previously, this caused an error. This requires an update to the
11085 ACPI spec, since it currently (incorrectly) states that packages larger
11087 255 elements are not allowed.
11089 The disassembler now correctly handles variable length packages and
11091 larger than 255 elements.
11093 ----------------------------------------
11094 08 April 2005. Summary of changes for version 20050408:
11096 1) ACPI CA Core Subsystem:
11098 Fixed three cases in the interpreter where an "index" argument to an ASL
11099 function was still (internally) 32 bits instead of the required 64 bits.
11100 This was the Index argument to the Index, Mid, and Match operators.
11102 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11104 not a POSIX-defined function and not present in most kernel-level C
11105 libraries. All references to the C library strupr function have been
11109 Completed the deployment of static functions/prototypes. All prototypes
11111 the static attribute have been moved from the headers to the owning C
11114 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11115 utility). This option allows the utility to extract individual ACPI
11117 from the output of AcpiDmp. It provides the same functionality of the
11118 acpixtract.pl perl script without the worry of setting the correct perl
11119 options. AcpiBin runs on Windows and has not yet been generated/validated
11121 the Linux/Unix environment (but should be soon).
11123 Updated and fixed the table dump option for AcpiBin (-d). This option
11124 converts a single ACPI table to a hex/ascii file, similar to the output
11128 Code and Data Size: Current and previous core subsystem library sizes are
11129 shown below. These are the code and data sizes for the acpica.lib
11131 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11132 any ACPI driver or OSPM code. The debug version of the code includes the
11133 debug output trace mechanism and has a much larger code and data size.
11135 that these values will vary depending on the efficiency of the compiler
11137 the compiler options used during generation.
11140 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11141 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11143 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11144 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11147 2) iASL Compiler/Disassembler:
11149 Disassembler fix: Added a check to ensure that the table length found in
11151 ACPI table header within the input file is not longer than the actual
11153 file size. This indicates some kind of file or table corruption.
11155 ----------------------------------------
11156 29 March 2005. Summary of changes for version 20050329:
11158 1) ACPI CA Core Subsystem:
11160 An error is now generated if an attempt is made to create a Buffer Field
11162 length zero (A CreateField with a length operand of zero.)
11164 The interpreter now issues a warning whenever executable code at the
11166 level is detected during ACPI table load. This will give some idea of the
11167 prevalence of this type of code.
11169 Implemented support for references to named objects (other than control
11170 methods) within package objects.
11172 Enhanced package object output for the debug object. Package objects are
11174 completely dumped, showing all elements.
11176 Enhanced miscellaneous object output for the debug object. Any object can
11177 now be written to the debug object (for example, a device object can be
11178 written, and the type of the object will be displayed.)
11180 The "static" qualifier has been added to all local functions across both
11182 core subsystem and the iASL compiler.
11184 The number of "long" lines (> 80 chars) within the source has been
11185 significantly reduced, by about 1/3.
11187 Cleaned up all header files to ensure that all CA/iASL functions are
11188 prototyped (even static functions) and the formatting is consistent.
11190 Two new header files have been added, acopcode.h and acnames.h.
11192 Removed several obsolete functions that were no longer used.
11194 Code and Data Size: Current and previous core subsystem library sizes are
11195 shown below. These are the code and data sizes for the acpica.lib
11197 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11198 any ACPI driver or OSPM code. The debug version of the code includes the
11199 debug output trace mechanism and has a much larger code and data size.
11201 that these values will vary depending on the efficiency of the compiler
11203 the compiler options used during generation.
11206 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11207 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11209 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11210 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11214 2) iASL Compiler/Disassembler:
11216 Fixed a problem with the resource descriptor generation/support. For the
11217 ResourceSourceIndex and the ResourceSource fields, both must be present,
11219 both must be not present - can't have one without the other.
11221 The compiler now returns non-zero from the main procedure if any errors
11223 occurred during the compilation.
11226 ----------------------------------------
11227 09 March 2005. Summary of changes for version 20050309:
11229 1) ACPI CA Core Subsystem:
11231 The string-to-buffer implicit conversion code has been modified again
11233 a change to the ACPI specification. In order to match the behavior of
11235 other major ACPI implementation, the target buffer is no longer truncated
11237 the source string is smaller than an existing target buffer. This change
11238 requires an update to the ACPI spec, and should eliminate the recent
11239 AE_AML_BUFFER_LIMIT issues.
11241 The "implicit return" support was rewritten to a new algorithm that
11243 the general case. Rather than attempt to determine when a method is about
11245 exit, the result of every ASL operator is saved momentarily until the
11247 next ASL operator is executed. Therefore, no matter how the method exits,
11248 there will always be a saved implicit return value. This feature is only
11249 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11251 AE_AML_NO_RETURN_VALUE errors when enabled.
11253 Implemented implicit conversion support for the predicate (operand) of
11255 If, Else, and While operators. String and Buffer arguments are
11257 converted to Integers.
11259 Changed the string-to-integer conversion behavior to match the new ACPI
11260 errata: "If no integer object exists, a new integer is created. The ASCII
11261 string is interpreted as a hexadecimal constant. Each string character is
11262 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11263 with the first character as the most significant digit, and ending with
11265 first non-hexadecimal character or end-of-string." This means that the
11267 non-hex character terminates the conversion and this is the code that was
11270 Fixed a problem where the ObjectType operator would fail (fault) when
11272 on an Index of a Package which pointed to a null package element. The
11273 operator now properly returns zero (Uninitialized) in this case.
11275 Fixed a problem where the While operator used excessive memory by not
11276 properly popping the result stack during execution. There was no memory
11278 after execution, however. (Code provided by Valery Podrezov.)
11280 Fixed a problem where references to control methods within Package
11282 caused the method to be invoked, instead of producing a reference object
11283 pointing to the method.
11285 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
11287 improve performance and reduce code size. (Code provided by Alexey
11290 Code and Data Size: Current and previous core subsystem library sizes are
11291 shown below. These are the code and data sizes for the acpica.lib
11293 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11294 any ACPI driver or OSPM code. The debug version of the code includes the
11295 debug output trace mechanism and has a much larger code and data size.
11297 that these values will vary depending on the efficiency of the compiler
11299 the compiler options used during generation.
11302 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11303 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11305 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11306 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11309 2) iASL Compiler/Disassembler:
11311 Fixed a problem with the Return operator with no arguments. Since the AML
11312 grammar for the byte encoding requires an operand for the Return opcode,
11314 compiler now emits a Return(Zero) for this case. An ACPI specification
11315 update has been written for this case.
11317 For tables other than the DSDT, namepath optimization is automatically
11318 disabled. This is because SSDTs can be loaded anywhere in the namespace,
11320 compiler has no knowledge of where, and thus cannot optimize namepaths.
11322 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
11323 inadvertently omitted from the ACPI specification, and will require an
11324 update to the spec.
11326 The source file scan for ASCII characters is now optional (-a). This
11328 was made because some vendors place non-ascii characters within comments.
11329 However, the scan is simply a brute-force byte compare to ensure all
11330 characters in the file are in the range 0x00 to 0x7F.
11332 Fixed a problem with the CondRefOf operator where the compiler was
11333 inappropriately checking for the existence of the target. Since the point
11335 the operator is to check for the existence of the target at run-time, the
11336 compiler no longer checks for the target existence.
11338 Fixed a problem where errors generated from the internal AML interpreter
11339 during constant folding were not handled properly, causing a fault.
11341 Fixed a problem with overly aggressive range checking for the Stall
11342 operator. The valid range (max 255) is now only checked if the operand is
11344 type Integer. All other operand types cannot be statically checked.
11346 Fixed a problem where control method references within the RefOf,
11348 and ObjectType operators were not treated properly. They are now treated
11350 actual references, not method invocations.
11352 Fixed and enhanced the "list namespace" option (-ln). This option was
11354 a number of releases ago.
11356 Improved error handling for the Field, IndexField, and BankField
11358 The compiler now cleanly reports and recovers from errors in the field
11359 component (FieldUnit) list.
11361 Fixed a disassembler problem where the optional ResourceDescriptor fields
11362 TRS and TTP were not always handled correctly.
11364 Disassembler - Comments in output now use "//" instead of "/*"
11366 ----------------------------------------
11367 28 February 2005. Summary of changes for version 20050228:
11369 1) ACPI CA Core Subsystem:
11371 Fixed a problem where the result of an Index() operator (an object
11372 reference) must increment the reference count on the target object for
11374 life of the object reference.
11376 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
11377 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
11379 resource descriptors.
11381 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
11382 Space Descriptor" string, indicating interpreter support for the
11386 Implemented header support for the new ACPI 3.0 FADT flag bits.
11388 Implemented header support for the new ACPI 3.0 PCI Express bits for the
11390 status/enable registers.
11392 Updated header support for the MADT processor local Apic struct and MADT
11393 platform interrupt source struct for new ACPI 3.0 fields.
11395 Implemented header support for the SRAT and SLIT ACPI tables.
11397 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
11401 Code and Data Size: Current and previous core subsystem library sizes are
11402 shown below. These are the code and data sizes for the acpica.lib
11404 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11405 any ACPI driver or OSPM code. The debug version of the code includes the
11406 debug output trace mechanism and has a much larger code and data size.
11408 that these values will vary depending on the efficiency of the compiler
11410 the compiler options used during generation.
11413 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11414 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11416 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11417 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11420 2) iASL Compiler/Disassembler:
11422 Fixed a problem with the internal 64-bit String-to-integer conversion
11424 strings less than two characters long.
11426 Fixed a problem with constant folding where the result of the Index()
11427 operator can not be considered a constant. This means that Index() cannot
11429 a type3 opcode and this will require an update to the ACPI specification.
11431 Disassembler: Implemented support for the TTP, MTP, and TRS resource
11432 descriptor fields. These fields were inadvertently ignored and not output
11434 the disassembly of the resource descriptor.
11437 ----------------------------------------
11438 11 February 2005. Summary of changes for version 20050211:
11440 1) ACPI CA Core Subsystem:
11442 Implemented ACPI 3.0 support for implicit conversion within the Match()
11443 operator. MatchObjects can now be of type integer, buffer, or string
11445 of just type integer. Package elements are implicitly converted to the
11447 of the MatchObject. This change aligns the behavior of Match() with the
11448 behavior of the other logical operators (LLess(), etc.) It also requires
11450 errata change to the ACPI specification as this support was intended for
11451 ACPI 3.0, but was inadvertently omitted.
11453 Fixed a problem with the internal implicit "to buffer" conversion.
11455 that are converted to buffers will cause buffer truncation if the string
11457 smaller than the target buffer. Integers that are converted to buffers
11459 not cause buffer truncation, only zero extension (both as per the ACPI
11460 spec.) The problem was introduced when code was added to truncate the
11461 buffer, but this should not be performed in all cases, only the string
11464 Fixed a problem with the Buffer and Package operators where the
11466 would get confused if two such operators were used as operands to an ASL
11467 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
11468 stack was not being popped after the execution of these operators,
11470 in an AE_NO_RETURN_VALUE exception.
11472 Fixed a problem with constructs of the form Store(Index(...),...). The
11473 reference object returned from Index was inadvertently resolved to an
11475 value. This problem was introduced in version 20050114 when the behavior
11477 Store() was modified to restrict the object types that can be used as the
11478 source operand (to match the ACPI specification.)
11480 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
11482 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
11484 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
11486 Code and Data Size: Current and previous core subsystem library sizes are
11487 shown below. These are the code and data sizes for the acpica.lib
11489 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11490 any ACPI driver or OSPM code. The debug version of the code includes the
11491 debug output trace mechanism and has a much larger code and data size.
11493 that these values will vary depending on the efficiency of the compiler
11495 the compiler options used during generation.
11498 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11499 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11501 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11502 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11505 2) iASL Compiler/Disassembler:
11507 Fixed a code generation problem in the constant folding optimization code
11508 where incorrect code was generated if a constant was reduced to a buffer
11509 object (i.e., a reduced type 5 opcode.)
11511 Fixed a typechecking problem for the ToBuffer operator. Caused by an
11512 incorrect return type in the internal opcode information table.
11514 ----------------------------------------
11515 25 January 2005. Summary of changes for version 20050125:
11517 1) ACPI CA Core Subsystem:
11519 Fixed a recently introduced problem with the Global Lock where the
11520 underlying semaphore was not created. This problem was introduced in
11521 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
11522 Acquire() operation on _GL.
11524 The local object cache is now optional, and is disabled by default. Both
11525 AcpiExec and the iASL compiler enable the cache because they run in user
11526 mode and this enhances their performance. #define
11527 ACPI_ENABLE_OBJECT_CACHE
11528 to enable the local cache.
11530 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
11532 optional "implicit return" support where an error was returned if no
11534 object was expected, but one was implicitly returned. AE_OK is now
11536 in this case and the implicitly returned object is deleted.
11537 AcpiUtEvaluateObject is only occasionally used, and only to execute
11539 methods such as _STA and _INI where the return type is known up front.
11541 Fixed a few issues with the internal convert-to-integer code. It now
11543 an error if an attempt is made to convert a null string, a string of only
11544 blanks/tabs, or a zero-length buffer. This affects both implicit
11546 and explicit conversion via the ToInteger() operator.
11548 The internal debug code in AcpiUtAcquireMutex has been commented out. It
11550 not needed for normal operation and should increase the performance of
11552 entire subsystem. The code remains in case it is needed for debug
11556 The AcpiExec source and makefile are included in the Unix/Linux package
11560 Code and Data Size: Current and previous core subsystem library sizes are
11561 shown below. These are the code and data sizes for the acpica.lib
11563 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11564 any ACPI driver or OSPM code. The debug version of the code includes the
11565 debug output trace mechanism and has a much larger code and data size.
11567 that these values will vary depending on the efficiency of the compiler
11569 the compiler options used during generation.
11572 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11573 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11575 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11576 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11578 2) iASL Compiler/Disassembler:
11580 Switch/Case support: A warning is now issued if the type of the Switch
11582 cannot be determined at compile time. For example, Switch(Arg0) will
11583 generate the warning, and the type is assumed to be an integer. As per
11585 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
11589 Switch/Case support: Implemented support for buffer and string objects as
11590 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
11591 buffers and strings.
11593 Switch/Case support: The emitted code for the LEqual() comparisons now
11595 the switch value as the first operand, not the second. The case value is
11597 the second operand, and this allows the case value to be implicitly
11598 converted to the type of the switch value, not the other way around.
11600 Switch/Case support: Temporary variables are now emitted immediately
11602 the control method, not at the global level. This means that there are
11604 36 temps available per-method, not 36 temps per-module as was the case
11606 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
11608 ----------------------------------------
11609 14 January 2005. Summary of changes for version 20050114:
11611 Added 2005 copyright to all module headers. This affects every module in
11612 the core subsystem, iASL compiler, and the utilities.
11614 1) ACPI CA Core Subsystem:
11616 Fixed an issue with the String-to-Buffer conversion code where the string
11617 null terminator was not included in the buffer after conversion, but
11619 is existing ASL that assumes the string null terminator is included. This
11621 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
11622 introduced in the previous version when the code was updated to correctly
11623 set the converted buffer size as per the ACPI specification. The ACPI
11625 is ambiguous and will be updated to specify that the null terminator must
11627 included in the converted buffer. This also affects the ToBuffer() ASL
11630 Fixed a problem with the Mid() ASL/AML operator where it did not work
11631 correctly on Buffer objects. Newly created sub-buffers were not being
11636 Fixed a problem in AcpiTbFindTable where incorrect string compares were
11637 performed on the OemId and OemTableId table header fields. These fields
11639 not null terminated, so strncmp is now used instead of strcmp.
11641 Implemented a restriction on the Store() ASL/AML operator to align the
11642 behavior with the ACPI specification. Previously, any object could be
11644 as the source operand. Now, the only objects that may be used are
11646 Buffers, Strings, Packages, Object References, and DDB Handles. If
11647 necessary, the original behavior can be restored by enabling the
11648 EnableInterpreterSlack flag.
11650 Enhanced the optional "implicit return" support to allow an implicit
11652 value from methods that are invoked externally via the AcpiEvaluateObject
11653 interface. This enables implicit returns from the _STA and _INI methods,
11656 Changed the Revision() ASL/AML operator to return the current version of
11658 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
11660 the supported ACPI version (This is the function of the _REV method).
11662 Updated the _REV predefined method to return the currently supported
11666 Implemented batch mode option for the AcpiExec utility (-b).
11668 Code and Data Size: Current and previous core subsystem library sizes are
11669 shown below. These are the code and data sizes for the acpica.lib
11671 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11672 any ACPI driver or OSPM code. The debug version of the code includes the
11673 debug output trace mechanism and has a much larger code and data size.
11675 that these values will vary depending on the efficiency of the compiler
11677 the compiler options used during generation.
11680 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11681 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11683 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11684 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11686 ----------------------------------------
11687 10 December 2004. Summary of changes for version 20041210:
11689 ACPI 3.0 support is nearing completion in both the iASL compiler and the
11690 ACPI CA core subsystem.
11692 1) ACPI CA Core Subsystem:
11694 Fixed a problem in the ToDecimalString operator where the resulting
11696 length was incorrectly calculated. The length is now calculated exactly,
11697 eliminating incorrect AE_STRING_LIMIT exceptions.
11699 Fixed a problem in the ToHexString operator to allow a maximum 200
11701 string to be produced.
11703 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
11705 routine where the length of the resulting buffer was not truncated to the
11706 new size (if the target buffer already existed).
11708 Code and Data Size: Current and previous core subsystem library sizes are
11709 shown below. These are the code and data sizes for the acpica.lib
11711 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11712 any ACPI driver or OSPM code. The debug version of the code includes the
11713 debug output trace mechanism and has a much larger code and data size.
11715 that these values will vary depending on the efficiency of the compiler
11717 the compiler options used during generation.
11720 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11721 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11723 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11724 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11727 2) iASL Compiler/Disassembler:
11729 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
11730 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
11731 Includes support in the disassembler.
11733 Implemented support for the new (ACPI 3.0) parameter to the Register
11737 Fixed a problem where the _HE resource name for the Interrupt macro was
11738 referencing bit 0 instead of bit 1.
11740 Implemented check for maximum 255 interrupts in the Interrupt macro.
11742 Fixed a problem with the predefined resource descriptor names where
11743 incorrect AML code was generated if the offset within the resource buffer
11744 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
11745 but did not update the surrounding package lengths.
11747 Changes to the Dma macro: All channels within the channel list must be
11749 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
11750 optional (default is BusMaster).
11752 Implemented check for maximum 7 data bytes for the VendorShort macro.
11754 The ReadWrite parameter is now optional for the Memory32 and similar
11757 ----------------------------------------
11758 03 December 2004. Summary of changes for version 20041203:
11760 1) ACPI CA Core Subsystem:
11762 The low-level field insertion/extraction code (exfldio) has been
11764 rewritten to eliminate unnecessary complexity, bugs, and boundary
11767 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
11769 operators where the input operand could be inadvertently deleted if no
11770 conversion was necessary (e.g., if the input to ToInteger was an Integer
11773 Fixed a problem with the ToDecimalString and ToHexString where an
11775 exception code was returned if the resulting string would be > 200 chars.
11776 AE_STRING_LIMIT is now returned.
11778 Fixed a problem with the Concatenate operator where AE_OK was always
11779 returned, even if the operation failed.
11781 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
11782 semaphores to be allocated.
11784 Code and Data Size: Current and previous core subsystem library sizes are
11785 shown below. These are the code and data sizes for the acpica.lib
11787 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11788 any ACPI driver or OSPM code. The debug version of the code includes the
11789 debug output trace mechanism and has a much larger code and data size.
11791 that these values will vary depending on the efficiency of the compiler
11793 the compiler options used during generation.
11796 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11797 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11799 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11800 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11803 2) iASL Compiler/Disassembler:
11805 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
11806 recently introduced in 20041119.
11808 Fixed a problem with the ToUUID macro where the upper nybble of each
11810 byte was inadvertently set to zero.
11812 ----------------------------------------
11813 19 November 2004. Summary of changes for version 20041119:
11815 1) ACPI CA Core Subsystem:
11817 Fixed a problem in the internal ConvertToInteger routine where new
11819 were not truncated to 32 bits for 32-bit ACPI tables. This routine
11821 buffers and strings to integers.
11823 Implemented support to store a value to an Index() on a String object.
11825 is an ACPI 2.0 feature that had not yet been implemented.
11827 Implemented new behavior for storing objects to individual package
11829 (via the Index() operator). The previous behavior was to invoke the
11831 conversion rules if an object was already present at the index. The new
11832 behavior is to simply delete any existing object and directly store the
11834 object. Although the ACPI specification seems unclear on this subject,
11836 ACPI implementations behave in this manner. (This is the root of the
11837 AE_BAD_HEX_CONSTANT issue.)
11839 Modified the RSDP memory scan mechanism to support the extended checksum
11841 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
11842 RSDP signature is found with a valid checksum.
11844 Code and Data Size: Current and previous core subsystem library sizes are
11845 shown below. These are the code and data sizes for the acpica.lib
11847 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11848 any ACPI driver or OSPM code. The debug version of the code includes the
11849 debug output trace mechanism and has a much larger code and data size.
11851 that these values will vary depending on the efficiency of the compiler
11853 the compiler options used during generation.
11856 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11857 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11859 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11860 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11863 2) iASL Compiler/Disassembler:
11865 Fixed a missing semicolon in the aslcompiler.y file.
11867 ----------------------------------------
11868 05 November 2004. Summary of changes for version 20041105:
11870 1) ACPI CA Core Subsystem:
11872 Implemented support for FADT revision 2. This was an interim table
11874 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
11876 Implemented optional support to allow uninitialized LocalX and ArgX
11877 variables in a control method. The variables are initialized to an
11879 object with a value of zero. This support is enabled by setting the
11880 AcpiGbl_EnableInterpreterSlack flag to TRUE.
11882 Implemented support for Integer objects for the SizeOf operator. Either
11884 or 8 is returned, depending on the current integer size (32-bit or 64-
11886 depending on the parent table revision).
11888 Fixed a problem in the implementation of the SizeOf and ObjectType
11890 where the operand was resolved to a value too early, causing incorrect
11891 return values for some objects.
11893 Fixed some possible memory leaks during exceptional conditions.
11895 Code and Data Size: Current and previous core subsystem library sizes are
11896 shown below. These are the code and data sizes for the acpica.lib
11898 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11899 any ACPI driver or OSPM code. The debug version of the code includes the
11900 debug output trace mechanism and has a much larger code and data size.
11902 that these values will vary depending on the efficiency of the compiler
11904 the compiler options used during generation.
11907 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11908 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11910 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11911 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11914 2) iASL Compiler/Disassembler:
11916 Implemented support for all ACPI 3.0 reserved names and methods.
11918 Implemented all ACPI 3.0 grammar elements in the front-end, including
11919 support for semicolons.
11921 Implemented the ACPI 3.0 Function() and ToUUID() macros
11923 Fixed a problem in the disassembler where a Scope() operator would not be
11924 emitted properly if the target of the scope was in another table.
11926 ----------------------------------------
11927 15 October 2004. Summary of changes for version 20041015:
11929 Note: ACPI CA is currently undergoing an in-depth and complete formal
11930 evaluation to test/verify the following areas. Other suggestions are
11931 welcome. This will result in an increase in the frequency of releases and
11932 the number of bug fixes in the next few months.
11933 - Functional tests for all ASL/AML operators
11934 - All implicit/explicit type conversions
11935 - Bit fields and operation regions
11936 - 64-bit math support and 32-bit-only "truncated" math support
11937 - Exceptional conditions, both compiler and interpreter
11938 - Dynamic object deletion and memory leaks
11939 - ACPI 3.0 support when implemented
11940 - External interfaces to the ACPI subsystem
11943 1) ACPI CA Core Subsystem:
11945 Fixed two alignment issues on 64-bit platforms - within debug statements
11947 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
11949 field within the non-aligned ACPI generic address structure.
11951 Fixed a problem in the Increment and Decrement operators where incorrect
11952 operand resolution could result in the inadvertent modification of the
11953 original integer when the integer is passed into another method as an
11954 argument and the arg is then incremented/decremented.
11956 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
11958 BCD number were truncated during conversion.
11960 Fixed a problem in the ToDecimal operator where the length of the
11962 string could be set incorrectly too long if the input operand was a
11966 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
11968 within a buffer would prematurely terminate a compare between buffer
11971 Added a check for string overflow (>200 characters as per the ACPI
11972 specification) during the Concatenate operator with two string operands.
11974 Code and Data Size: Current and previous core subsystem library sizes are
11975 shown below. These are the code and data sizes for the acpica.lib
11977 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11978 any ACPI driver or OSPM code. The debug version of the code includes the
11979 debug output trace mechanism and has a much larger code and data size.
11981 that these values will vary depending on the efficiency of the compiler
11983 the compiler options used during generation.
11986 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11987 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11989 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11990 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11994 2) iASL Compiler/Disassembler:
11996 Allow the use of the ObjectType operator on uninitialized Locals and Args
11997 (returns 0 as per the ACPI specification).
11999 Fixed a problem where the compiler would fault if there was a syntax
12001 in the FieldName of all of the various CreateXXXField operators.
12003 Disallow the use of lower case letters within the EISAID macro, as per
12005 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12007 U is an uppercase letter and N is a hex digit.
12010 ----------------------------------------
12011 06 October 2004. Summary of changes for version 20041006:
12013 1) ACPI CA Core Subsystem:
12015 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12016 implements a 64-bit timer with 100 nanosecond granularity.
12018 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12019 implement the ACPI 3.0 Timer operator. This allows the host OS to
12021 the timer with the best clock available. Also, it keeps the core
12023 out of the clock handling business, since the host OS (usually) performs
12026 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
12027 functions use a 64-bit address which is part of the packed ACPI Generic
12028 Address Structure. Since the structure is non-aligned, the alignment
12030 are now used to extract the address to a local variable before use.
12032 Fixed a problem where the ToInteger operator assumed all input strings
12034 hexadecimal. The operator now handles both decimal strings and hex
12036 (prefixed with "0x").
12038 Fixed a problem where the string length in the string object created as a
12039 result of the internal ConvertToString procedure could be incorrect. This
12040 potentially affected all implicit conversions and also the
12042 and ToHexString operators.
12044 Fixed two problems in the ToString operator. If the length parameter was
12045 zero, an incorrect string object was created and the value of the input
12046 length parameter was inadvertently changed from zero to Ones.
12048 Fixed a problem where the optional ResourceSource string in the
12050 resource macro was ignored.
12052 Simplified the interfaces to the internal division functions, reducing
12054 size and complexity.
12056 Code and Data Size: Current and previous core subsystem library sizes are
12057 shown below. These are the code and data sizes for the acpica.lib
12059 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12060 any ACPI driver or OSPM code. The debug version of the code includes the
12061 debug output trace mechanism and has a much larger code and data size.
12063 that these values will vary depending on the efficiency of the compiler
12065 the compiler options used during generation.
12068 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12069 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12071 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12072 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12075 2) iASL Compiler/Disassembler:
12077 Implemented support for the ACPI 3.0 Timer operator.
12079 Fixed a problem where the Default() operator was inadvertently ignored in
12081 Switch/Case block. This was a problem in the translation of the Switch
12082 statement to If...Else pairs.
12084 Added support to allow a standalone Return operator, with no parentheses
12088 Fixed a problem with code generation for the ElseIf operator where the
12089 translated Else...If parse tree was improperly constructed leading to the
12092 ----------------------------------------
12093 22 September 2004. Summary of changes for version 20040922:
12095 1) ACPI CA Core Subsystem:
12097 Fixed a problem with the implementation of the LNot() operator where
12099 was not returned for the TRUE case. Changed the code to return Ones
12101 of (!Arg) which was usually 1. This change affects iASL constant folding
12103 this operator also.
12105 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12107 initialized properly -- Now zero the entire buffer in this case where the
12108 buffer already exists.
12110 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12111 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12112 related code considerably. This will require changes/updates to all OS
12113 interface layers (OSLs.)
12115 Implemented a new external interface, AcpiInstallExceptionHandler, to
12117 a system exception handler to be installed. This handler is invoked upon
12119 run-time exception that occurs during control method execution.
12121 Added support for the DSDT in AcpiTbFindTable. This allows the
12122 DataTableRegion() operator to access the local copy of the DSDT.
12124 Code and Data Size: Current and previous core subsystem library sizes are
12125 shown below. These are the code and data sizes for the acpica.lib
12127 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12128 any ACPI driver or OSPM code. The debug version of the code includes the
12129 debug output trace mechanism and has a much larger code and data size.
12131 that these values will vary depending on the efficiency of the compiler
12133 the compiler options used during generation.
12136 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12137 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12139 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12140 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12143 2) iASL Compiler/Disassembler:
12145 Fixed a problem with constant folding and the LNot operator. LNot was
12146 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12148 could result in the generation of an incorrect folded/reduced constant.
12150 End-Of-File is now allowed within a "//"-style comment. A parse error no
12151 longer occurs if such a comment is at the very end of the input ASL
12155 Implemented the "-r" option to override the Revision in the table header.
12156 The initial use of this option will be to simplify the evaluation of the
12158 interpreter by allowing a single ASL source module to be compiled for
12160 32-bit or 64-bit integers.
12163 ----------------------------------------
12164 27 August 2004. Summary of changes for version 20040827:
12166 1) ACPI CA Core Subsystem:
12168 - Implemented support for implicit object conversion in the non-numeric
12169 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12171 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12172 the second operand is implicitly converted on the fly to match the type
12174 the first operand. For example:
12176 LEqual (Source1, Source2)
12178 Source1 and Source2 must each evaluate to an integer, a string, or a
12180 The data type of Source1 dictates the required type of Source2. Source2
12182 implicitly converted if necessary to match the type of Source1.
12184 - Updated and corrected the behavior of the string conversion support.
12186 rules concerning conversion of buffers to strings (according to the ACPI
12187 specification) are as follows:
12189 ToDecimalString - explicit byte-wise conversion of buffer to string of
12190 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12192 conversion of buffer to string of hex values (0-FF) separated by commas.
12193 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12195 copy with no transform except NULL terminated. Any other implicit buffer-
12197 string conversion - byte-wise conversion of buffer to string of hex
12199 (0-FF) separated by spaces.
12201 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12203 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12205 one byte too short in the case of a node in the root scope. This could
12206 cause a fault during debug output.
12208 - Code and Data Size: Current and previous core subsystem library sizes
12210 shown below. These are the code and data sizes for the acpica.lib
12212 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12213 any ACPI driver or OSPM code. The debug version of the code includes the
12214 debug output trace mechanism and has a much larger code and data size.
12216 that these values will vary depending on the efficiency of the compiler
12218 the compiler options used during generation.
12221 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12222 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12224 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12225 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12228 2) iASL Compiler/Disassembler:
12230 - Fixed a Linux generation error.
12233 ----------------------------------------
12234 16 August 2004. Summary of changes for version 20040816:
12236 1) ACPI CA Core Subsystem:
12238 Designed and implemented support within the AML interpreter for the so-
12239 called "implicit return". This support returns the result of the last
12241 operation within a control method, in the absence of an explicit Return()
12242 operator. A few machines depend on this behavior, even though it is not
12243 explicitly supported by the ASL language. It is optional support that
12245 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12247 Removed support for the PCI_Config address space from the internal low
12249 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12250 support was not used internally, and would not work correctly anyway
12252 the PCI bus number and segment number were not supported. There are
12253 separate interfaces for PCI configuration space access because of the
12257 Code and Data Size: Current and previous core subsystem library sizes are
12258 shown below. These are the code and data sizes for the acpica.lib
12260 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12261 any ACPI driver or OSPM code. The debug version of the code includes the
12262 debug output trace mechanism and has a much larger code and data size.
12264 that these values will vary depending on the efficiency of the compiler
12266 the compiler options used during generation.
12269 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12270 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12272 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12273 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12276 2) iASL Compiler/Disassembler:
12278 Fixed a problem where constants in ASL expressions at the root level (not
12279 within a control method) could be inadvertently truncated during code
12280 generation. This problem was introduced in the 20040715 release.
12283 ----------------------------------------
12284 15 July 2004. Summary of changes for version 20040715:
12286 1) ACPI CA Core Subsystem:
12288 Restructured the internal HW GPE interfaces to pass/track the current
12290 of interrupts (enabled/disabled) in order to avoid possible deadlock and
12291 increase flexibility of the interfaces.
12293 Implemented a "lexicographical compare" for String and Buffer objects
12295 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
12297 as per further clarification to the ACPI specification. Behavior is
12299 to C library "strcmp".
12301 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
12302 external function. In the 32-bit non-debug case, the stack use has been
12303 reduced from 168 bytes to 32 bytes.
12305 Deployed a new run-time configuration flag,
12306 AcpiGbl_EnableInterpreterSlack,
12307 whose purpose is to allow the AML interpreter to forgive certain bad AML
12308 constructs. Default setting is FALSE.
12310 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
12312 support code. If enabled, it allows field access to go beyond the end of
12314 region definition if the field is within the region length rounded up to
12316 next access width boundary (a common coding error.)
12318 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
12319 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
12321 symbols are lowercased by the latest version of the AcpiSrc tool.
12323 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
12324 rename "Register" to simply "Reg" to prevent certain compilers from
12327 Code and Data Size: Current and previous core subsystem library sizes are
12328 shown below. These are the code and data sizes for the acpica.lib
12330 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12331 any ACPI driver or OSPM code. The debug version of the code includes the
12332 debug output trace mechanism and has a much larger code and data size.
12334 that these values will vary depending on the efficiency of the compiler
12336 the compiler options used during generation.
12339 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12340 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12342 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12343 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12346 2) iASL Compiler/Disassembler:
12348 Implemented full support for Package objects within the Case() operator.
12349 Note: The Break() operator is currently not supported within Case blocks
12350 (TermLists) as there is some question about backward compatibility with
12355 Fixed a problem where complex terms were not supported properly within
12359 Eliminated extraneous warning for compiler-emitted reserved names of the
12360 form "_T_x". (Used in Switch/Case operators.)
12362 Eliminated optimization messages for "_T_x" objects and small constants
12363 within the DefinitionBlock operator.
12366 ----------------------------------------
12367 15 June 2004. Summary of changes for version 20040615:
12369 1) ACPI CA Core Subsystem:
12371 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12373 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12376 All directory names in the entire source package are lower case, as they
12377 were in earlier releases.
12379 Implemented "Disassemble" command in the AML debugger that will
12381 a single control method.
12383 Code and Data Size: Current and previous core subsystem library sizes are
12384 shown below. These are the code and data sizes for the acpica.lib
12386 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12387 any ACPI driver or OSPM code. The debug version of the code includes the
12388 debug output trace mechanism and has a much larger code and data size.
12390 that these values will vary depending on the efficiency of the compiler
12392 the compiler options used during generation.
12395 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12396 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12399 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12400 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12403 2) iASL Compiler/Disassembler:
12405 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12407 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12410 All directory names in the entire source package are lower case, as they
12411 were in earlier releases.
12413 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
12416 Fixed an issue with the Windows version of the compiler where later
12418 of Windows place the FADT in the registry under the name "FADT" and not
12419 "FACP" as earlier versions did. This applies when using the -g or -
12420 d<nofilename> options. The compiler now looks for both strings as
12423 Fixed a problem with compiler namepath optimization where a namepath
12425 the Scope() operator could not be optimized if the namepath was a subpath
12427 the current scope path.
12429 ----------------------------------------
12430 27 May 2004. Summary of changes for version 20040527:
12432 1) ACPI CA Core Subsystem:
12434 Completed a new design and implementation for EBDA (Extended BIOS Data
12436 support in the RSDP scan code. The original code improperly scanned for
12438 EBDA by simply scanning from memory location 0 to 0x400. The correct
12440 is to first obtain the EBDA pointer from within the BIOS data area, then
12441 scan 1K of memory starting at the EBDA pointer. There appear to be few
12443 any machines that place the RSDP in the EBDA, however.
12445 Integrated a fix for a possible fault during evaluation of BufferField
12446 arguments. Obsolete code that was causing the problem was removed.
12448 Found and fixed a problem in the Field Support Code where data could be
12449 corrupted on a bit field read that starts on an aligned boundary but does
12450 not end on an aligned boundary. Merged the read/write "datum length"
12451 calculation code into a common procedure.
12453 Rolled in a couple of changes to the FreeBSD-specific header.
12456 Code and Data Size: Current and previous core subsystem library sizes are
12457 shown below. These are the code and data sizes for the acpica.lib
12459 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12460 any ACPI driver or OSPM code. The debug version of the code includes the
12461 debug output trace mechanism and has a much larger code and data size.
12463 that these values will vary depending on the efficiency of the compiler
12465 the compiler options used during generation.
12468 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12469 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12471 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12472 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12475 2) iASL Compiler/Disassembler:
12477 Fixed a generation warning produced by some overly-verbose compilers for
12481 ----------------------------------------
12482 14 May 2004. Summary of changes for version 20040514:
12484 1) ACPI CA Core Subsystem:
12486 Fixed a problem where hardware GPE enable bits sometimes not set properly
12487 during and after GPE method execution. Result of 04/27 changes.
12489 Removed extra "clear all GPEs" when sleeping/waking.
12491 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
12492 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
12494 the new AcpiEv* calls as appropriate.
12496 ACPI_OS_NAME was removed from the OS-specific headers. The default name
12498 now "Microsoft Windows NT" for maximum compatibility. However this can
12500 changed by modifying the acconfig.h file.
12502 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
12503 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
12505 Run _INI methods on ThermalZone objects. This is against the ACPI
12506 specification, but there is apparently ASL code in the field that has
12508 _INI methods, and apparently "other" AML interpreters execute them.
12510 Performed a full 16/32/64 bit lint that resulted in some small changes.
12512 Added a sleep simulation command to the AML debugger to test sleep code.
12514 Code and Data Size: Current and previous core subsystem library sizes are
12515 shown below. These are the code and data sizes for the acpica.lib
12517 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12518 any ACPI driver or OSPM code. The debug version of the code includes the
12519 debug output trace mechanism and has a much larger code and data size.
12521 that these values will vary depending on the efficiency of the compiler
12523 the compiler options used during generation.
12526 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12527 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12529 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12530 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12532 ----------------------------------------
12533 27 April 2004. Summary of changes for version 20040427:
12535 1) ACPI CA Core Subsystem:
12537 Completed a major overhaul of the GPE handling within ACPI CA. There are
12538 now three types of GPEs: wake-only, runtime-only, and combination
12540 The only GPEs allowed to be combination wake/run are for button-style
12541 devices such as a control-method power button, control-method sleep
12543 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
12545 referenced by any _PRW methods are marked for "runtime" and hardware
12546 enabled. Any GPE that is referenced by a _PRW method is marked for
12548 (and disabled at runtime). However, at sleep time, only those GPEs that
12549 have been specifically enabled for wake via the AcpiEnableGpe interface
12551 actually be hardware enabled.
12553 A new external interface has been added, AcpiSetGpeType(), that is meant
12555 be used by device drivers to force a GPE to a particular type. It will
12557 especially useful for the drivers for the button devices mentioned above.
12559 Completed restructuring of the ACPI CA initialization sequence so that
12560 default operation region handlers are installed before GPEs are
12562 and the _PRW methods are executed. This will prevent errors when the
12564 methods attempt to access system memory or I/O space.
12566 GPE enable/disable no longer reads the GPE enable register. We now keep
12568 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
12569 thus no longer depend on the hardware to maintain these bits.
12571 Always clear the wake status and fixed/GPE status bits before sleep, even
12574 Improved the AML debugger output for displaying the GPE blocks and their
12577 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
12581 Fixed a problem where the physical address was incorrectly calculated
12583 the Load() operator was used to directly load from an Operation Region
12585 loading from a Field object.) Also added check for minimum table length
12589 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
12592 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
12593 consistency with the other fields returned.
12595 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
12596 structure for each GPE in the system, so the size of this structure is
12599 CPU stack requirement reduction: Cleaned up the method execution and
12601 evaluation paths so that now a parameter structure is passed, instead of
12602 copying the various method parameters over and over again.
12604 In evregion.c: Correctly exit and reenter the interpreter region if and
12605 only if dispatching an operation region request to a user-installed
12607 Do not exit/reenter when dispatching to a default handler (e.g., default
12608 system memory or I/O handlers)
12611 Notes for updating drivers for the new GPE support. The following
12613 must be made to ACPI-related device drivers that are attached to one or
12615 GPEs: (This information will be added to the ACPI CA Programmer
12618 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
12620 explicitly call AcpiEnableGpe.
12621 2) There is a new interface called AcpiSetGpeType. This should be called
12622 before enabling the GPE. Also, this interface will automatically disable
12623 the GPE if it is currently enabled.
12624 3) AcpiEnableGpe no longer supports a GPE type flag.
12626 Specific drivers that must be changed:
12628 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
12629 AeGpeHandler, NULL);
12630 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
12631 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
12633 2) Button Drivers (Power, Lid, Sleep):
12634 Run _PRW method under parent device
12635 If _PRW exists: /* This is a control-method button */
12636 Extract GPE number and possibly GpeDevice
12637 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
12638 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
12640 For all other devices that have _PRWs, we automatically set the GPE type
12642 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
12644 must be done on a selective basis, usually requiring some kind of user
12646 to allow the user to pick the wake devices.
12649 Code and Data Size: Current and previous core subsystem library sizes are
12650 shown below. These are the code and data sizes for the acpica.lib
12652 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12653 any ACPI driver or OSPM code. The debug version of the code includes the
12654 debug output trace mechanism and has a much larger code and data size.
12656 that these values will vary depending on the efficiency of the compiler
12658 the compiler options used during generation.
12661 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12662 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12665 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12666 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12670 ----------------------------------------
12671 02 April 2004. Summary of changes for version 20040402:
12673 1) ACPI CA Core Subsystem:
12675 Fixed an interpreter problem where an indirect store through an ArgX
12676 parameter was incorrectly applying the "implicit conversion rules" during
12677 the store. From the ACPI specification: "If the target is a method local
12679 argument (LocalX or ArgX), no conversion is performed and the result is
12680 stored directly to the target". The new behavior is to disable implicit
12681 conversion during ALL stores to an ArgX.
12683 Changed the behavior of the _PRW method scan to ignore any and all errors
12684 returned by a given _PRW. This prevents the scan from aborting from the
12685 failure of any single _PRW.
12687 Moved the runtime configuration parameters from the global init procedure
12689 static variables in acglobal.h. This will allow the host to override the
12690 default values easily.
12692 Code and Data Size: Current and previous core subsystem library sizes are
12693 shown below. These are the code and data sizes for the acpica.lib
12695 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12696 any ACPI driver or OSPM code. The debug version of the code includes the
12697 debug output trace mechanism and has a much larger code and data size.
12699 that these values will vary depending on the efficiency of the compiler
12701 the compiler options used during generation.
12704 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12705 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12707 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12708 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12711 2) iASL Compiler/Disassembler:
12713 iASL now fully disassembles SSDTs. However, External() statements are
12715 generated automatically for unresolved symbols at this time. This is a
12716 planned feature for future implementation.
12718 Fixed a scoping problem in the disassembler that occurs when the type of
12720 target of a Scope() operator is overridden. This problem caused an
12721 incorrectly nested internal namespace to be constructed.
12723 Any warnings or errors that are emitted during disassembly are now
12725 out automatically so that the resulting file can be recompiled without
12729 ----------------------------------------
12730 26 March 2004. Summary of changes for version 20040326:
12732 1) ACPI CA Core Subsystem:
12734 Implemented support for "wake" GPEs via interaction between GPEs and the
12735 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
12736 identified as a WAKE GPE and by default will no longer be enabled at
12737 runtime. Previously, we were blindly enabling all GPEs with a
12739 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
12741 believe this has been the cause of thousands of "spurious" GPEs on some
12744 This new GPE behavior is can be reverted to the original behavior (enable
12745 ALL GPEs at runtime) via a runtime flag.
12747 Fixed a problem where aliased control methods could not access objects
12748 properly. The proper scope within the namespace was not initialized
12749 (transferred to the target of the aliased method) before executing the
12752 Fixed a potential race condition on internal object deletion on the
12754 object in AcpiEvaluateObject.
12756 Integrated a fix for resource descriptors where both _MEM and _MTP were
12757 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
12758 wide, 0x0F instead of 0x03.)
12760 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
12763 fault in some cases.
12765 Updated Notify() values for debug statements in evmisc.c
12767 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
12769 Code and Data Size: Current and previous core subsystem library sizes are
12770 shown below. These are the code and data sizes for the acpica.lib
12772 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12773 any ACPI driver or OSPM code. The debug version of the code includes the
12774 debug output trace mechanism and has a much larger code and data size.
12776 that these values will vary depending on the efficiency of the compiler
12778 the compiler options used during generation.
12782 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12783 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12785 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12786 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12788 ----------------------------------------
12789 11 March 2004. Summary of changes for version 20040311:
12791 1) ACPI CA Core Subsystem:
12793 Fixed a problem where errors occurring during the parse phase of control
12794 method execution did not abort cleanly. For example, objects created and
12795 installed in the namespace were not deleted. This caused all subsequent
12796 invocations of the method to return the AE_ALREADY_EXISTS exception.
12798 Implemented a mechanism to force a control method to "Serialized"
12800 if the method attempts to create namespace objects. (The root of the
12801 AE_ALREADY_EXISTS problem.)
12803 Implemented support for the predefined _OSI "internal" control method.
12804 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
12806 "Windows 2001.1", and can be easily upgraded for new strings as
12808 This feature will allow "other" operating systems to execute the fully
12809 tested, "Windows" code path through the ASL code
12811 Global Lock Support: Now allows multiple acquires and releases with any
12812 internal thread. Removed concept of "owning thread" for this special
12815 Fixed two functions that were inappropriately declaring large objects on
12817 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
12819 method execution considerably.
12821 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
12822 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
12824 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
12825 defined on the machine.
12827 Implemented two runtime options: One to force all control method
12829 to "Serialized" to mimic Windows behavior, another to disable _OSI
12831 if it causes problems on a given machine.
12833 Code and Data Size: Current and previous core subsystem library sizes are
12834 shown below. These are the code and data sizes for the acpica.lib
12836 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12837 any ACPI driver or OSPM code. The debug version of the code includes the
12838 debug output trace mechanism and has a much larger code and data size.
12840 that these values will vary depending on the efficiency of the compiler
12842 the compiler options used during generation.
12845 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12846 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12848 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12849 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12851 2) iASL Compiler/Disassembler:
12853 Fixed an array size problem for FreeBSD that would cause the compiler to
12856 ----------------------------------------
12857 20 February 2004. Summary of changes for version 20040220:
12860 1) ACPI CA Core Subsystem:
12862 Implemented execution of _SxD methods for Device objects in the
12863 GetObjectInfo interface.
12865 Fixed calls to _SST method to pass the correct arguments.
12867 Added a call to _SST on wake to restore to "working" state.
12869 Check for End-Of-Buffer failure case in the WalkResources interface.
12871 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
12872 structures to the beginning of the file.
12874 After wake, clear GPE status register(s) before enabling GPEs.
12876 After wake, clear/enable power button. (Perhaps we should clear/enable
12878 fixed events upon wake.)
12880 Fixed a couple of possible memory leaks in the Namespace manager.
12882 Integrated latest acnetbsd.h file.
12884 ----------------------------------------
12885 11 February 2004. Summary of changes for version 20040211:
12888 1) ACPI CA Core Subsystem:
12890 Completed investigation and implementation of the call-by-reference
12891 mechanism for control method arguments.
12893 Fixed a problem where a store of an object into an indexed package could
12894 fail if the store occurs within a different method than the method that
12895 created the package.
12897 Fixed a problem where the ToDecimal operator could return incorrect
12900 Fixed a problem where the CopyObject operator could fail on some of the
12902 obscure objects (e.g., Reference objects.)
12904 Improved the output of the Debug object to display buffer, package, and
12907 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
12909 the expected result.
12911 Added permanent ACPI_REPORT_ERROR macros for all instances of the
12912 ACPI_AML_INTERNAL exception.
12914 Integrated latest version of acfreebsd.h
12916 ----------------------------------------
12917 16 January 2004. Summary of changes for version 20040116:
12919 The purpose of this release is primarily to update the copyright years in
12920 each module, thus causing a huge number of diffs. There are a few small
12921 functional changes, however.
12923 1) ACPI CA Core Subsystem:
12925 Improved error messages when there is a problem finding one or more of
12927 required base ACPI tables
12929 Reintroduced the definition of APIC_HEADER in actbl.h
12931 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
12933 Removed extraneous reference to NewObj in dsmthdat.c
12937 Fixed a problem introduced in December that disabled the correct
12939 of Resource Templates
12942 ----------------------------------------
12943 03 December 2003. Summary of changes for version 20031203:
12945 1) ACPI CA Core Subsystem:
12947 Changed the initialization of Operation Regions during subsystem
12948 init to perform two entire walks of the ACPI namespace; The first
12949 to initialize the regions themselves, the second to execute the
12950 _REG methods. This fixed some interdependencies across _REG
12951 methods found on some machines.
12953 Fixed a problem where a Store(Local0, Local1) could simply update
12954 the object reference count, and not create a new copy of the
12955 object if the Local1 is uninitialized.
12957 Implemented support for the _SST reserved method during sleep
12960 Implemented support to clear the SLP_TYP and SLP_EN bits when
12961 waking up, this is apparently required by some machines.
12963 When sleeping, clear the wake status only if SleepState is not S5.
12965 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
12966 pointer arithmetic advanced a string pointer too far.
12968 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
12969 could be returned if the requested table has not been loaded.
12971 Within the support for IRQ resources, restructured the handling of
12972 the active and edge/level bits.
12974 Fixed a few problems in AcpiPsxExecute() where memory could be
12975 leaked under certain error conditions.
12977 Improved error messages for the cases where the ACPI mode could
12980 Code and Data Size: Current and previous core subsystem library
12981 sizes are shown below. These are the code and data sizes for the
12982 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12983 these values do not include any ACPI driver or OSPM code. The
12984 debug version of the code includes the debug output trace
12985 mechanism and has a much larger code and data size. Note that
12986 these values will vary depending on the efficiency of the compiler
12987 and the compiler options used during generation.
12989 Previous Release (20031029):
12990 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12991 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12993 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12994 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12996 2) iASL Compiler/Disassembler:
12998 Implemented a fix for the iASL disassembler where a bad index was
12999 generated. This was most noticeable on 64-bit platforms
13002 ----------------------------------------
13003 29 October 2003. Summary of changes for version 20031029:
13005 1) ACPI CA Core Subsystem:
13008 Fixed a problem where a level-triggered GPE with an associated
13009 _Lxx control method was incorrectly cleared twice.
13011 Fixed a problem with the Field support code where an access can
13012 occur beyond the end-of-region if the field is non-aligned but
13013 extends to the very end of the parent region (resulted in an
13014 AE_AML_REGION_LIMIT exception.)
13016 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13017 would not get invoked on an RTC event. The RTC event bitmasks for
13018 the PM1 registers were not being initialized properly.
13020 Implemented support for executing _STA and _INI methods for
13021 Processor objects. Although this is currently not part of the
13022 ACPI specification, there is existing ASL code that depends on the
13023 init-time execution of these methods.
13025 Implemented and deployed a GetDescriptorName function to decode
13026 the various types of internal descriptors. Guards against null
13027 descriptors during debug output also.
13029 Implemented and deployed a GetNodeName function to extract the 4-
13030 character namespace node name. This function simplifies the debug
13031 and error output, as well as guarding against null pointers during
13034 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13035 simplify the debug and error output of 64-bit integers. This
13036 macro replaces the HIDWORD and LODWORD macros for dumping these
13039 Updated the implementation of the Stall() operator to only call
13040 AcpiOsStall(), and also return an error if the operand is larger
13041 than 255. This preserves the required behavior of not
13042 relinquishing the processor, as would happen if AcpiOsSleep() was
13043 called for "long stalls".
13045 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13046 initialized are now treated as NOOPs.
13048 Cleaned up a handful of warnings during 64-bit generation.
13050 Fixed a reported error where and incorrect GPE number was passed
13051 to the GPE dispatch handler. This value is only used for error
13052 output, however. Used this opportunity to clean up and streamline
13053 the GPE dispatch code.
13055 Code and Data Size: Current and previous core subsystem library
13056 sizes are shown below. These are the code and data sizes for the
13057 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13058 these values do not include any ACPI driver or OSPM code. The
13060 debug version of the code includes the debug output trace
13061 mechanism and has a much larger code and data size. Note that
13062 these values will vary depending on the efficiency of the compiler
13063 and the compiler options used during generation.
13065 Previous Release (20031002):
13066 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13067 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13069 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13070 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13073 2) iASL Compiler/Disassembler:
13075 Updated the iASL compiler to return an error if the operand to the
13076 Stall() operator is larger than 255.
13079 ----------------------------------------
13080 02 October 2003. Summary of changes for version 20031002:
13083 1) ACPI CA Core Subsystem:
13085 Fixed a problem with Index Fields where the index was not
13086 incremented for fields that require multiple writes to the
13087 index/data registers (Fields that are wider than the data
13090 Fixed a problem with all Field objects where a write could go
13091 beyond the end-of-field if the field was larger than the access
13092 granularity and therefore required multiple writes to complete the
13093 request. An extra write beyond the end of the field could happen
13096 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13097 would incorrectly be returned if the width of the Data Register
13098 was larger than the specified field access width.
13100 Completed fixes for LoadTable() and Unload() and verified their
13101 operation. Implemented full support for the "DdbHandle" object
13102 throughout the ACPI CA subsystem.
13104 Implemented full support for the MADT and ECDT tables in the ACPI
13105 CA header files. Even though these tables are not directly
13106 consumed by ACPI CA, the header definitions are useful for ACPI
13109 Integrated resource descriptor fixes posted to the Linux ACPI
13110 list. This included checks for minimum descriptor length, and
13111 support for trailing NULL strings within descriptors that have
13112 optional string elements.
13114 Code and Data Size: Current and previous core subsystem library
13115 sizes are shown below. These are the code and data sizes for the
13116 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13117 these values do not include any ACPI driver or OSPM code. The
13118 debug version of the code includes the debug output trace
13119 mechanism and has a much larger code and data size. Note that
13120 these values will vary depending on the efficiency of the compiler
13121 and the compiler options used during generation.
13123 Previous Release (20030918):
13124 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13125 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13127 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13128 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13133 Implemented detection of non-ASCII characters within the input
13134 source ASL file. This catches attempts to compile binary (AML)
13135 files early in the compile, with an informative error message.
13137 Fixed a problem where the disassembler would fault if the output
13138 filename could not be generated or if the output file could not be
13141 ----------------------------------------
13142 18 September 2003. Summary of changes for version 20030918:
13145 1) ACPI CA Core Subsystem:
13147 Found and fixed a longstanding problem with the late execution of
13148 the various deferred AML opcodes (such as Operation Regions,
13149 Buffer Fields, Buffers, and Packages). If the name string
13150 specified for the name of the new object placed the object in a
13151 scope other than the current scope, the initialization/execution
13152 of the opcode failed. The solution to this problem was to
13153 implement a mechanism where the late execution of such opcodes
13154 does not attempt to lookup/create the name a second time in an
13155 incorrect scope. This fixes the "region size computed
13156 incorrectly" problem.
13158 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13159 Global Lock AE_BAD_PARAMETER error.
13161 Fixed several 64-bit issues with prototypes, casting and data
13164 Removed duplicate prototype from acdisasm.h
13166 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13168 Code and Data Size: Current and previous core subsystem library
13169 sizes are shown below. These are the code and data sizes for the
13170 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13171 these values do not include any ACPI driver or OSPM code. The
13172 debug version of the code includes the debug output trace
13173 mechanism and has a much larger code and data size. Note that
13174 these values will vary depending on the efficiency of the compiler
13175 and the compiler options used during generation.
13179 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13180 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13182 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13183 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13188 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13189 correct sleep time in seconds.
13191 ----------------------------------------
13192 14 July 2003. Summary of changes for version 20030619:
13194 1) ACPI CA Core Subsystem:
13196 Parse SSDTs in order discovered, as opposed to reverse order
13199 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13206 Dynamically allocate SDT list (suggested by Andi Kleen)
13208 proc function return value cleanups (Andi Kleen)
13210 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13212 Make it so acpismp=force works (reported by Andrew Morton)
13215 ----------------------------------------
13216 19 June 2003. Summary of changes for version 20030619:
13218 1) ACPI CA Core Subsystem:
13220 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13222 Do not acquire a semaphore in the S5 shutdown path.
13224 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13226 Fix sleep/stall code reversal. (Andi Kleen)
13228 Revert a change having to do with control method calling
13233 acpiphp update (Takayoshi Kochi)
13235 Export acpi_disabled for sonypi (Stelian Pop)
13237 Mention acpismp=force in config help
13239 Re-add acpitable.c and acpismp=force. This improves backwards
13241 compatibility and also cleans up the code to a significant degree.
13243 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13245 ----------------------------------------
13246 22 May 2003. Summary of changes for version 20030522:
13248 1) ACPI CA Core Subsystem:
13250 Found and fixed a reported problem where an AE_NOT_FOUND error
13251 occurred occasionally during _BST evaluation. This turned out to
13252 be an Owner ID allocation issue where a called method did not get
13253 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13254 ID UINT16 would wraparound so that the ID would be the same as the
13255 caller's and the called method would delete the caller's
13258 Implemented extended error reporting for control methods that are
13259 aborted due to a run-time exception. Output includes the exact
13260 AML instruction that caused the method abort, a dump of the method
13261 locals and arguments at the time of the abort, and a trace of all
13262 nested control method calls.
13264 Modified the interpreter to allow the creation of buffers of zero
13265 length from the AML code. Implemented new code to ensure that no
13266 attempt is made to actually allocate a memory buffer (of length
13267 zero) - instead, a simple buffer object with a NULL buffer pointer
13268 and length zero is created. A warning is no longer issued when
13269 the AML attempts to create a zero-length buffer.
13271 Implemented a workaround for the "leading asterisk issue" in
13272 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13273 asterisk is automatically removed if present in any HID, UID, or
13274 CID strings. The iASL compiler will still flag this asterisk as
13277 Implemented full support for _CID methods that return a package of
13278 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
13279 now additionally returns a device _CID list if present. This
13280 required a change to the external interface in order to pass an
13281 ACPI_BUFFER object as a parameter since the _CID list is of
13284 Fixed a problem with the new AE_SAME_HANDLER exception where
13285 handler initialization code did not know about this exception.
13287 Code and Data Size: Current and previous core subsystem library
13288 sizes are shown below. These are the code and data sizes for the
13289 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13290 these values do not include any ACPI driver or OSPM code. The
13291 debug version of the code includes the debug output trace
13292 mechanism and has a much larger code and data size. Note that
13293 these values will vary depending on the efficiency of the compiler
13294 and the compiler options used during generation.
13296 Previous Release (20030509):
13297 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13298 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13300 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13301 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13306 Fixed a bug in which we would reinitialize the ACPI interrupt
13307 after it was already working, thus disabling all ACPI and the IRQs
13308 for any other device sharing the interrupt. (Thanks to Stian
13311 Toshiba driver update (John Belmonte)
13313 Return only 0 or 1 for our interrupt handler status (Andrew
13319 Fixed a reported problem where multiple (nested) ElseIf()
13320 statements were not handled correctly by the compiler, resulting
13321 in incorrect warnings and incorrect AML code. This was a problem
13322 in both the ASL parser and the code generator.
13327 Added changes to existing interfaces, new exception codes, and new
13328 text concerning reference count object management versus garbage
13331 ----------------------------------------
13332 09 May 2003. Summary of changes for version 20030509.
13335 1) ACPI CA Core Subsystem:
13337 Changed the subsystem initialization sequence to hold off
13338 installation of address space handlers until the hardware has been
13339 initialized and the system has entered ACPI mode. This is because
13340 the installation of space handlers can cause _REG methods to be
13341 run. Previously, the _REG methods could potentially be run before
13342 ACPI mode was enabled.
13344 Fixed some memory leak issues related to address space handler and
13345 notify handler installation. There were some problems with the
13346 reference count mechanism caused by the fact that the handler
13347 objects are shared across several namespace objects.
13349 Fixed a reported problem where reference counts within the
13350 namespace were not properly updated when named objects created by
13351 method execution were deleted.
13353 Fixed a reported problem where multiple SSDTs caused a deletion
13354 issue during subsystem termination. Restructured the table data
13355 structures to simplify the linked lists and the related code.
13357 Fixed a problem where the table ID associated with secondary
13358 tables (SSDTs) was not being propagated into the namespace objects
13359 created by those tables. This would only present a problem for
13360 tables that are unloaded at run-time, however.
13362 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
13363 type as the length parameter (instead of UINT32).
13365 Solved a long-standing problem where an ALREADY_EXISTS error
13366 appears on various systems. This problem could happen when there
13367 are multiple PCI_Config operation regions under a single PCI root
13368 bus. This doesn't happen very frequently, but there are some
13369 systems that do this in the ASL.
13371 Fixed a reported problem where the internal DeleteNode function
13372 was incorrectly handling the case where a namespace node was the
13373 first in the parent's child list, and had additional peers (not
13374 the only child, but first in the list of children.)
13376 Code and Data Size: Current core subsystem library sizes are shown
13377 below. These are the code and data sizes for the acpica.lib
13378 produced by the Microsoft Visual C++ 6.0 compiler, and these
13379 values do not include any ACPI driver or OSPM code. The debug
13380 version of the code includes the debug output trace mechanism and
13381 has a much larger code and data size. Note that these values will
13382 vary depending on the efficiency of the compiler and the compiler
13383 options used during generation.
13386 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13387 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13389 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13390 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13395 Allow ":" in OS override string (Ducrot Bruno)
13397 Kobject fix (Greg KH)
13400 3 iASL Compiler/Disassembler:
13402 Fixed a problem in the generation of the C source code files (AML
13403 is emitted in C source statements for BIOS inclusion) where the
13404 Ascii dump that appears within a C comment at the end of each line
13405 could cause a compile time error if the AML sequence happens to
13406 have an open comment or close comment sequence embedded.
13409 ----------------------------------------
13410 24 April 2003. Summary of changes for version 20030424.
13413 1) ACPI CA Core Subsystem:
13415 Support for big-endian systems has been implemented. Most of the
13416 support has been invisibly added behind big-endian versions of the
13417 ACPI_MOVE_* macros.
13419 Fixed a problem in AcpiHwDisableGpeBlock() and
13420 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
13421 low level hardware write routine. The offset parameter was
13422 actually eliminated from the low level read/write routines because
13423 they had become obsolete.
13425 Fixed a problem where a handler object was deleted twice during
13426 the removal of a fixed event handler.
13431 A fix for SMP systems with link devices was contributed by
13435 (2.5) Return whether we handled the interrupt in our IRQ handler.
13436 (Linux ISRs no longer return void, so we can propagate the handler
13437 return value from the ACPI CA core back to the OS.)
13443 The ACPI CA Programmer Reference has been updated to reflect new
13444 interfaces and changes to existing interfaces.
13446 ----------------------------------------
13447 28 March 2003. Summary of changes for version 20030328.
13449 1) ACPI CA Core Subsystem:
13451 The GPE Block Device support has been completed. New interfaces
13452 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
13453 interfaces (enable, disable, clear, getstatus) have been split
13454 into separate interfaces for Fixed Events and General Purpose
13455 Events (GPEs) in order to support GPE Block Devices properly.
13457 Fixed a problem where the error message "Failed to acquire
13458 semaphore" would appear during operations on the embedded
13461 Code and Data Size: Current core subsystem library sizes are shown
13462 below. These are the code and data sizes for the acpica.lib
13463 produced by the Microsoft Visual C++ 6.0 compiler, and these
13464 values do not include any ACPI driver or OSPM code. The debug
13465 version of the code includes the debug output trace mechanism and
13466 has a much larger code and data size. Note that these values will
13467 vary depending on the efficiency of the compiler and the compiler
13468 options used during generation.
13471 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13472 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13474 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13475 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13478 ----------------------------------------
13479 28 February 2003. Summary of changes for version 20030228.
13482 1) ACPI CA Core Subsystem:
13484 The GPE handling and dispatch code has been completely overhauled
13485 in preparation for support of GPE Block Devices (ID ACPI0006).
13486 This affects internal data structures and code only; there should
13487 be no differences visible externally. One new file has been
13490 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
13491 fields that are used to determine the GPE block lengths. The
13492 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
13493 structures are ignored. This is per the ACPI specification but it
13494 isn't very clear. The full 256 Block 0/1 GPEs are now supported
13495 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
13497 In the SCI interrupt handler, removed the read of the PM1_CONTROL
13498 register to look at the SCI_EN bit. On some machines, this read
13499 causes an SMI event and greatly slows down SCI events. (This may
13500 in fact be the cause of slow battery status response on some
13503 Fixed a problem where a store of a NULL string to a package object
13504 could cause the premature deletion of the object. This was seen
13505 during execution of the battery _BIF method on some systems,
13506 resulting in no battery data being returned.
13508 Added AcpiWalkResources interface to simplify parsing of resource
13511 Code and Data Size: Current core subsystem library sizes are shown
13512 below. These are the code and data sizes for the acpica.lib
13513 produced by the Microsoft Visual C++ 6.0 compiler, and these
13514 values do not include any ACPI driver or OSPM code. The debug
13515 version of the code includes the debug output trace mechanism and
13516 has a much larger code and data size. Note that these values will
13517 vary depending on the efficiency of the compiler and the compiler
13518 options used during generation.
13521 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13522 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13524 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13525 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13530 S3 fixes (Ole Rohne)
13532 Update ACPI PHP driver with to use new acpi_walk_resource API
13535 Add S4BIOS support (Pavel Machek)
13537 Map in entire table before performing checksum (John Stultz)
13539 Expand the mem= cmdline to allow the specification of reserved and
13540 ACPI DATA blocks (Pavel Machek)
13542 Never use ACPI on VISWS
13544 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
13546 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
13547 causing us to think that some systems support C2 when they really
13550 Do not count processor objects for non-present CPUs (Thanks to
13556 Fixed a problem where ASL include files could not be found and
13559 Added support for the _PDC reserved name.
13562 ----------------------------------------
13563 22 January 2003. Summary of changes for version 20030122.
13566 1) ACPI CA Core Subsystem:
13568 Added a check for constructs of the form: Store (Local0, Local0)
13569 where Local0 is not initialized. Apparently, some BIOS
13570 programmers believe that this is a NOOP. Since this store doesn't
13571 do anything anyway, the new prototype behavior will ignore this
13572 error. This is a case where we can relax the strict checking in
13573 the interpreter in the name of compatibility.
13578 The AcpiSrc Source Conversion Utility has been released with the
13579 Linux package for the first time. This is the utility that is
13580 used to convert the ACPI CA base source code to the Linux version.
13582 (Both) Handle P_BLK lengths shorter than 6 more gracefully
13584 (Both) Move more headers to include/acpi, and delete an unused
13587 (Both) Move drivers/acpi/include directory to include/acpi
13589 (Both) Boot functions don't use cmdline, so don't pass it around
13591 (Both) Remove include of unused header (Adrian Bunk)
13593 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
13595 former now also includes the latter, acpiphp.h only needs the one,
13598 (2.5) Make it possible to select method of bios restoring after S3
13599 resume. [=> no more ugly ifdefs] (Pavel Machek)
13601 (2.5) Make proc write interfaces work (Pavel Machek)
13603 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
13605 (2.5) Break out ACPI Perf code into its own module, under cpufreq
13606 (Dominik Brodowski)
13608 (2.4) S4BIOS support (Ducrot Bruno)
13610 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
13616 Added support to disassemble SSDT and PSDTs.
13618 Implemented support to obtain SSDTs from the Windows registry if
13622 ----------------------------------------
13623 09 January 2003. Summary of changes for version 20030109.
13625 1) ACPI CA Core Subsystem:
13627 Changed the behavior of the internal Buffer-to-String conversion
13628 function. The current ACPI specification states that the contents
13629 of the buffer are "converted to a string of two-character
13630 hexadecimal numbers, each separated by a space". Unfortunately,
13631 this definition is not backwards compatible with existing ACPI 1.0
13632 implementations (although the behavior was not defined in the ACPI
13633 1.0 specification). The new behavior simply copies data from the
13634 buffer to the string until a null character is found or the end of
13635 the buffer is reached. The new String object is always null
13636 terminated. This problem was seen during the generation of _BIF
13637 battery data where incorrect strings were returned for battery
13638 type, etc. This will also require an errata to the ACPI
13641 Renamed all instances of NATIVE_UINT and NATIVE_INT to
13642 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
13644 Copyright in all module headers (both Linux and non-Linux) has be
13647 Code and Data Size: Current core subsystem library sizes are shown
13648 below. These are the code and data sizes for the acpica.lib
13649 produced by the Microsoft Visual C++ 6.0 compiler, and these
13650 values do not include any ACPI driver or OSPM code. The debug
13651 version of the code includes the debug output trace mechanism and
13652 has a much larger code and data size. Note that these values will
13653 vary depending on the efficiency of the compiler and the compiler
13654 options used during generation.
13657 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13658 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13660 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13661 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13666 Fixed an oops on module insertion/removal (Matthew Tippett)
13668 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
13670 (2.5) Replace pr_debug (Randy Dunlap)
13672 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
13674 (Both) Eliminate spawning of thread from timer callback, in favor
13677 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
13679 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
13681 (Both) Add missing statics to button.c (Pavel Machek)
13683 Several changes have been made to the source code translation
13684 utility that generates the Linux Code in order to make the code
13687 All typedefs on structs and unions have been removed in keeping
13688 with the Linux coding style.
13690 Removed the non-Linux SourceSafe module revision number from each
13693 Completed major overhaul of symbols to be lowercased for linux.
13694 Doubled the number of symbols that are lowercased.
13696 Fixed a problem where identifiers within procedure headers and
13697 within quotes were not fully lower cased (they were left with a
13700 Some C macros whose only purpose is to allow the generation of 16-
13701 bit code are now completely removed in the Linux code, increasing
13702 readability and maintainability.
13704 ----------------------------------------
13706 12 December 2002. Summary of changes for version 20021212.
13709 1) ACPI CA Core Subsystem:
13711 Fixed a problem where the creation of a zero-length AML Buffer
13712 would cause a fault.
13714 Fixed a problem where a Buffer object that pointed to a static AML
13715 buffer (in an ACPI table) could inadvertently be deleted, causing
13718 Fixed a problem where a user buffer (passed in to the external
13719 ACPI CA interfaces) could be overwritten if the buffer was too
13720 small to complete the operation, causing memory corruption.
13722 Fixed a problem in the Buffer-to-String conversion code where a
13723 string of length one was always returned, regardless of the size
13724 of the input Buffer object.
13726 Removed the NATIVE_CHAR data type across the entire source due to
13727 lack of need and lack of consistent use.
13729 Code and Data Size: Current core subsystem library sizes are shown
13730 below. These are the code and data sizes for the acpica.lib
13731 produced by the Microsoft Visual C++ 6.0 compiler, and these
13732 values do not include any ACPI driver or OSPM code. The debug
13733 version of the code includes the debug output trace mechanism and
13734 has a much larger code and data size. Note that these values will
13735 vary depending on the efficiency of the compiler and the compiler
13736 options used during generation.
13739 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13740 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13742 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13743 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13746 ----------------------------------------
13747 05 December 2002. Summary of changes for version 20021205.
13749 1) ACPI CA Core Subsystem:
13751 Fixed a problem where a store to a String or Buffer object could
13752 cause corruption of the DSDT if the object type being stored was
13753 the same as the target object type and the length of the object
13754 being stored was equal to or smaller than the original (existing)
13755 target object. This was seen to cause corruption of battery _BIF
13756 buffers if the _BIF method modified the buffer on the fly.
13758 Fixed a problem where an internal error was generated if a control
13759 method invocation was used in an OperationRegion, Buffer, or
13760 Package declaration. This was caused by the deferred parsing of
13761 the control method and thus the deferred creation of the internal
13762 method object. The solution to this problem was to create the
13763 internal method object at the moment the method is encountered in
13764 the first pass - so that subsequent references to the method will
13765 able to obtain the required parameter count and thus properly
13766 parse the method invocation. This problem presented itself as an
13767 AE_AML_INTERNAL during the pass 1 parse phase during table load.
13769 Fixed a problem where the internal String object copy routine did
13770 not always allocate sufficient memory for the target String object
13771 and caused memory corruption. This problem was seen to cause
13772 "Allocation already present in list!" errors as memory allocation
13775 Implemented a new function for the evaluation of namespace objects
13776 that allows the specification of the allowable return object
13777 types. This simplifies a lot of code that checks for a return
13778 object of one or more specific objects returned from the
13779 evaluation (such as _STA, etc.) This may become and external
13780 function if it would be useful to ACPI-related drivers.
13782 Completed another round of prefixing #defines with "ACPI_" for
13785 Completed additional code restructuring to allow more modular
13786 linking for iASL compiler and AcpiExec. Several files were split
13787 creating new files. New files: nsparse.c dsinit.c evgpe.c
13789 Implemented an abort mechanism to terminate an executing control
13790 method via the AML debugger. This feature is useful for debugging
13791 control methods that depend (wait) for specific hardware
13794 Code and Data Size: Current core subsystem library sizes are shown
13795 below. These are the code and data sizes for the acpica.lib
13796 produced by the Microsoft Visual C++ 6.0 compiler, and these
13797 values do not include any ACPI driver or OSPM code. The debug
13798 version of the code includes the debug output trace mechanism and
13799 has a much larger code and data size. Note that these values will
13800 vary depending on the efficiency of the compiler and the compiler
13801 options used during generation.
13804 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13805 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13807 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13808 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13811 2) iASL Compiler/Disassembler
13813 Fixed a compiler code generation problem for "Interrupt" Resource
13814 Descriptors. If specified in the ASL, the optional "Resource
13815 Source Index" and "Resource Source" fields were not inserted into
13816 the correct location within the AML resource descriptor, creating
13817 an invalid descriptor.
13819 Fixed a disassembler problem for "Interrupt" resource descriptors.
13820 The optional "Resource Source Index" and "Resource Source" fields
13824 ----------------------------------------
13825 22 November 2002. Summary of changes for version 20021122.
13828 1) ACPI CA Core Subsystem:
13830 Fixed a reported problem where an object stored to a Method Local
13831 or Arg was not copied to a new object during the store - the
13832 object pointer was simply copied to the Local/Arg. This caused
13833 all subsequent operations on the Local/Arg to also affect the
13834 original source of the store operation.
13836 Fixed a problem where a store operation to a Method Local or Arg
13837 was not completed properly if the Local/Arg contained a reference
13838 (from RefOf) to a named field. The general-purpose store-to-
13839 namespace-node code is now used so that this case is handled
13842 Fixed a problem where the internal object copy routine would cause
13843 a protection fault if the object being copied was a Package and
13844 contained either 1) a NULL package element or 2) a nested sub-
13847 Fixed a problem with the GPE initialization that resulted from an
13848 ambiguity in the ACPI specification. One section of the
13849 specification states that both the address and length of the GPE
13850 block must be zero if the block is not supported. Another section
13851 implies that only the address need be zero if the block is not
13852 supported. The code has been changed so that both the address and
13853 the length must be non-zero to indicate a valid GPE block (i.e.,
13854 if either the address or the length is zero, the GPE block is
13857 Code and Data Size: Current core subsystem library sizes are shown
13858 below. These are the code and data sizes for the acpica.lib
13859 produced by the Microsoft Visual C++ 6.0 compiler, and these
13860 values do not include any ACPI driver or OSPM code. The debug
13861 version of the code includes the debug output trace mechanism and
13862 has a much larger code and data size. Note that these values will
13863 vary depending on the efficiency of the compiler and the compiler
13864 options used during generation.
13867 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13868 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13870 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13871 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13876 Cleaned up EC driver. Exported an external EC read/write
13877 interface. By going through this, other drivers (most notably
13878 sonypi) will be able to serialize access to the EC.
13881 3) iASL Compiler/Disassembler
13883 Implemented support to optionally generate include files for both
13884 ASM and C (the -i switch). This simplifies BIOS development by
13885 automatically creating include files that contain external
13886 declarations for the symbols that are created within the
13888 (optionally generated) ASM and C AML source files.
13891 ----------------------------------------
13892 15 November 2002. Summary of changes for version 20021115.
13894 1) ACPI CA Core Subsystem:
13896 Fixed a memory leak problem where an error during resolution of
13898 method arguments during a method invocation from another method
13899 failed to cleanup properly by deleting all successfully resolved
13902 Fixed a problem where the target of the Index() operator was not
13903 correctly constructed if the source object was a package. This
13904 problem has not been detected because the use of a target operand
13905 with Index() is very rare.
13907 Fixed a problem with the Index() operator where an attempt was
13908 made to delete the operand objects twice.
13910 Fixed a problem where an attempt was made to delete an operand
13911 twice during execution of the CondRefOf() operator if the target
13914 Implemented the first of perhaps several internal create object
13915 functions that create and initialize a specific object type. This
13916 consolidates duplicated code wherever the object is created, thus
13917 shrinking the size of the subsystem.
13919 Implemented improved debug/error messages for errors that occur
13920 during nested method invocations. All executing method pathnames
13921 are displayed (with the error) as the call stack is unwound - thus
13924 Fixed a problem introduced in the 10/02 release that caused
13925 premature deletion of a buffer object if a buffer was used as an
13926 ASL operand where an integer operand is required (Thus causing an
13927 implicit object conversion from Buffer to Integer.) The change in
13928 the 10/02 release was attempting to fix a memory leak (albeit
13931 Code and Data Size: Current core subsystem library sizes are shown
13932 below. These are the code and data sizes for the acpica.lib
13933 produced by the Microsoft Visual C++ 6.0 compiler, and these
13934 values do not include any ACPI driver or OSPM code. The debug
13935 version of the code includes the debug output trace mechanism and
13936 has a much larger code and data size. Note that these values will
13937 vary depending on the efficiency of the compiler and the compiler
13938 options used during generation.
13941 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13942 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13944 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13945 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13950 Changed the implementation of the ACPI semaphores to use down()
13951 instead of down_interruptable(). It is important that the
13952 execution of ACPI control methods not be interrupted by signals.
13953 Methods must run to completion, or the system may be left in an
13954 unknown/unstable state.
13956 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
13960 3) iASL Compiler/Disassembler
13963 Changed the default location of output files. All output files
13964 are now placed in the current directory by default instead of in
13965 the directory of the source file. This change may affect some
13966 existing makefiles, but it brings the behavior of the compiler in
13967 line with other similar tools. The location of the output files
13968 can be overridden with the -p command line switch.
13971 ----------------------------------------
13972 11 November 2002. Summary of changes for version 20021111.
13975 0) ACPI Specification 2.0B is released and is now available at:
13976 http://www.acpi.info/index.html
13979 1) ACPI CA Core Subsystem:
13981 Implemented support for the ACPI 2.0 SMBus Operation Regions.
13982 This includes the early detection and handoff of the request to
13983 the SMBus region handler (avoiding all of the complex field
13984 support code), and support for the bidirectional return packet
13985 from an SMBus write operation. This paves the way for the
13986 development of SMBus drivers in each host operating system.
13988 Fixed a problem where the semaphore WAIT_FOREVER constant was
13989 defined as 32 bits, but must be 16 bits according to the ACPI
13990 specification. This had the side effect of causing ASL
13991 Mutex/Event timeouts even though the ASL code requested a wait
13992 forever. Changed all internal references to the ACPI timeout
13993 parameter to 16 bits to prevent future problems. Changed the name
13994 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
13996 Code and Data Size: Current core subsystem library sizes are shown
13997 below. These are the code and data sizes for the acpica.lib
13998 produced by the Microsoft Visual C++ 6.0 compiler, and these
13999 values do not include any ACPI driver or OSPM code. The debug
14000 version of the code includes the debug output trace mechanism and
14001 has a much larger code and data size. Note that these values will
14002 vary depending on the efficiency of the compiler and the compiler
14003 options used during generation.
14006 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14007 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14009 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14010 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14015 Module loading/unloading fixes (John Cagle)
14018 3) iASL Compiler/Disassembler
14020 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14022 Implemented support for the disassembly of all SMBus protocol
14023 keywords (SMBQuick, SMBWord, etc.)
14025 ----------------------------------------
14026 01 November 2002. Summary of changes for version 20021101.
14029 1) ACPI CA Core Subsystem:
14031 Fixed a problem where platforms that have a GPE1 block but no GPE0
14032 block were not handled correctly. This resulted in a "GPE
14033 overlap" error message. GPE0 is no longer required.
14035 Removed code added in the previous release that inserted nodes
14036 into the namespace in alphabetical order. This caused some side-
14037 effects on various machines. The root cause of the problem is
14038 still under investigation since in theory, the internal ordering
14039 of the namespace nodes should not matter.
14042 Enhanced error reporting for the case where a named object is not
14043 found during control method execution. The full ACPI namepath
14044 (name reference) of the object that was not found is displayed in
14047 Note: as a result of the overhaul of the namespace object types in
14048 the previous release, the namespace nodes for the predefined
14049 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14050 instead of ACPI_TYPE_ANY. This simplifies the namespace
14051 management code but may affect code that walks the namespace tree
14052 looking for specific object types.
14054 Code and Data Size: Current core subsystem library sizes are shown
14055 below. These are the code and data sizes for the acpica.lib
14056 produced by the Microsoft Visual C++ 6.0 compiler, and these
14057 values do not include any ACPI driver or OSPM code. The debug
14058 version of the code includes the debug output trace mechanism and
14059 has a much larger code and data size. Note that these values will
14060 vary depending on the efficiency of the compiler and the compiler
14061 options used during generation.
14064 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14065 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14067 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14068 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14073 Fixed a problem introduced in the previous release where the
14074 Processor and Thermal objects were not recognized and installed in
14075 /proc. This was related to the scope type change described above.
14078 3) iASL Compiler/Disassembler
14080 Implemented the -g option to get all of the required ACPI tables
14081 from the registry and save them to files (Windows version of the
14082 compiler only.) The required tables are the FADT, FACS, and DSDT.
14084 Added ACPI table checksum validation during table disassembly in
14085 order to catch corrupted tables.
14088 ----------------------------------------
14089 22 October 2002. Summary of changes for version 20021022.
14091 1) ACPI CA Core Subsystem:
14093 Implemented a restriction on the Scope operator that the target
14094 must already exist in the namespace at the time the operator is
14095 encountered (during table load or method execution). In other
14096 words, forward references are not allowed and Scope() cannot
14097 create a new object. This changes the previous behavior where the
14098 interpreter would create the name if not found. This new behavior
14099 correctly enables the search-to-root algorithm during namespace
14100 lookup of the target name. Because of this upsearch, this fixes
14101 the known Compaq _SB_.OKEC problem and makes both the AML
14102 interpreter and iASL compiler compatible with other ACPI
14105 Completed a major overhaul of the internal ACPI object types for
14106 the ACPI Namespace and the associated operand objects. Many of
14107 these types had become obsolete with the introduction of the two-
14108 pass namespace load. This cleanup simplifies the code and makes
14109 the entire namespace load mechanism much clearer and easier to
14112 Improved debug output for tracking scope opening/closing to help
14113 diagnose scoping issues. The old scope name as well as the new
14114 scope name are displayed. Also improved error messages for
14115 problems with ASL Mutex objects and error messages for GPE
14118 Cleaned up the namespace dump code, removed obsolete code.
14120 All string output (for all namespace/object dumps) now uses the
14121 common ACPI string output procedure which handles escapes properly
14122 and does not emit non-printable characters.
14124 Fixed some issues with constants in the 64-bit version of the
14125 local C library (utclib.c)
14130 EC Driver: No longer attempts to acquire the Global Lock at
14134 3) iASL Compiler/Disassembler
14136 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14137 2 opcodes outside of a control method. This means that the
14138 "executable" operators (versus the "namespace" operators) cannot
14139 be used at the table level; they can only be used within a control
14142 Implemented the restriction on the Scope() operator where the
14143 target must already exist in the namespace at the time the
14144 operator is encountered (during ASL compilation). In other words,
14145 forward references are not allowed and Scope() cannot create a new
14146 object. This makes the iASL compiler compatible with other ACPI
14147 implementations and makes the Scope() implementation adhere to the
14148 ACPI specification.
14150 Fixed a problem where namepath optimization for the Alias operator
14151 was optimizing the wrong path (of the two namepaths.) This caused
14152 a "Missing alias link" error message.
14154 Fixed a problem where an "unknown reserved name" warning could be
14155 incorrectly generated for names like "_SB" when the trailing
14156 underscore is not used in the original ASL.
14158 Fixed a problem where the reserved name check did not handle
14159 NamePaths with multiple NameSegs correctly. The first nameseg of
14160 the NamePath was examined instead of the last NameSeg.
14163 ----------------------------------------
14165 02 October 2002. Summary of changes for this release.
14168 1) ACPI CA Core Subsystem version 20021002:
14170 Fixed a problem where a store/copy of a string to an existing
14171 string did not always set the string length properly in the String
14174 Fixed a reported problem with the ToString operator where the
14175 behavior was identical to the ToHexString operator instead of just
14176 simply converting a raw buffer to a string data type.
14178 Fixed a problem where CopyObject and the other "explicit"
14179 conversion operators were not updating the internal namespace node
14180 type as part of the store operation.
14182 Fixed a memory leak during implicit source operand conversion
14183 where the original object was not deleted if it was converted to a
14184 new object of a different type.
14186 Enhanced error messages for all problems associated with namespace
14187 lookups. Common procedure generates and prints the lookup name as
14188 well as the formatted status.
14190 Completed implementation of a new design for the Alias support
14191 within the namespace. The existing design did not handle the case
14192 where a new object was assigned to one of the two names due to the
14193 use of an explicit conversion operator, resulting in the two names
14194 pointing to two different objects. The new design simply points
14195 the Alias name to the original name node - not to the object.
14196 This results in a level of indirection that must be handled in the
14197 name resolution mechanism.
14199 Code and Data Size: Current core subsystem library sizes are shown
14200 below. These are the code and data sizes for the acpica.lib
14201 produced by the Microsoft Visual C++ 6.0 compiler, and these
14202 values do not include any ACPI driver or OSPM code. The debug
14203 version of the code includes the debug output trace mechanism and
14204 has a larger code and data size. Note that these values will vary
14205 depending on the efficiency of the compiler and the compiler
14206 options used during generation.
14209 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14210 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14212 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14213 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14218 Initialize thermal driver's timer before it is used. (Knut
14221 Allow handling negative celsius values. (Kochi Takayoshi)
14223 Fix thermal management and make trip points. R/W (Pavel Machek)
14225 Fix /proc/acpi/sleep. (P. Christeas)
14227 IA64 fixes. (David Mosberger)
14229 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14231 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14235 3) iASL Compiler/Disassembler
14237 Clarified some warning/error messages.
14240 ----------------------------------------
14241 18 September 2002. Summary of changes for this release.
14244 1) ACPI CA Core Subsystem version 20020918:
14246 Fixed a reported problem with reference chaining (via the Index()
14247 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14248 The definition of these operators includes the dereferencing of
14249 all chained references to return information on the base object.
14251 Fixed a problem with stores to indexed package elements - the
14252 existing code would not complete the store if an "implicit
14253 conversion" was not performed. In other words, if the existing
14254 object (package element) was to be replaced completely, the code
14255 didn't handle this case.
14257 Relaxed typechecking on the ASL "Scope" operator to allow the
14258 target name to refer to an object of type Integer, String, or
14259 Buffer, in addition to the scoping object types (Device,
14260 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14261 This allows existing AML code that has workarounds for a bug in
14262 Windows to function properly. A warning is issued, however. This
14263 affects both the AML interpreter and the iASL compiler. Below is
14264 an example of this type of ASL code:
14270 Fixed some reported problems with 64-bit integer support in the
14271 local implementation of C library functions (clib.c)
14276 Use ACPI fix map region instead of IOAPIC region, since it is
14277 undefined in non-SMP.
14279 Ensure that the SCI has the proper polarity and trigger, even on
14280 systems that do not have an interrupt override entry in the MADT.
14282 2.5 big driver reorganization (Pat Mochel)
14284 Use early table mapping code from acpitable.c (Andi Kleen)
14286 New blacklist entries (Andi Kleen)
14288 Blacklist improvements. Split blacklist code out into a separate
14289 file. Move checking the blacklist to very early. Previously, we
14290 would use ACPI tables, and then halfway through init, check the
14291 blacklist -- too late. Now, it's early enough to completely fall-
14295 3) iASL Compiler/Disassembler version 20020918:
14297 Fixed a problem where the typechecking code didn't know that an
14298 alias could point to a method. In other words, aliases were not
14299 being dereferenced during typechecking.
14302 ----------------------------------------
14303 29 August 2002. Summary of changes for this release.
14305 1) ACPI CA Core Subsystem Version 20020829:
14307 If the target of a Scope() operator already exists, it must be an
14308 object type that actually opens a scope -- such as a Device,
14309 Method, Scope, etc. This is a fatal runtime error. Similar error
14310 check has been added to the iASL compiler also.
14312 Tightened up the namespace load to disallow multiple names in the
14313 same scope. This previously was allowed if both objects were of
14314 the same type. (i.e., a lookup was the same as entering a new
14320 Ensure that the ACPI interrupt has the proper trigger and
14323 local_irq_disable is extraneous. (Matthew Wilcox)
14325 Make "acpi=off" actually do what it says, and not use the ACPI
14326 interpreter *or* the tables.
14328 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
14332 3) iASL Compiler/Disassembler Version 20020829:
14334 Implemented namepath optimization for name declarations. For
14335 example, a declaration like "Method (\_SB_.ABCD)" would get
14336 optimized to "Method (ABCD)" if the declaration is within the
14337 \_SB_ scope. This optimization is in addition to the named
14338 reference path optimization first released in the previous
14339 version. This would seem to complete all possible optimizations
14340 for namepaths within the ASL/AML.
14342 If the target of a Scope() operator already exists, it must be an
14343 object type that actually opens a scope -- such as a Device,
14344 Method, Scope, etc.
14346 Implemented a check and warning for unreachable code in the same
14347 block below a Return() statement.
14349 Fixed a problem where the listing file was not generated if the
14350 compiler aborted if the maximum error count was exceeded (200).
14352 Fixed a problem where the typechecking of method return values was
14353 broken. This includes the check for a return value when the
14354 method is invoked as a TermArg (a return value is expected.)
14356 Fixed a reported problem where EOF conditions during a quoted
14357 string or comment caused a fault.
14360 ----------------------------------------
14361 15 August 2002. Summary of changes for this release.
14363 1) ACPI CA Core Subsystem Version 20020815:
14365 Fixed a reported problem where a Store to a method argument that
14366 contains a reference did not perform the indirect store correctly.
14367 This problem was created during the conversion to the new
14368 reference object model - the indirect store to a method argument
14369 code was not updated to reflect the new model.
14371 Reworked the ACPI mode change code to better conform to ACPI 2.0,
14372 handle corner cases, and improve code legibility (Kochi Takayoshi)
14374 Fixed a problem with the pathname parsing for the carat (^)
14375 prefix. The heavy use of the carat operator by the new namepath
14376 optimization in the iASL compiler uncovered a problem with the AML
14377 interpreter handling of this prefix. In the case where one or
14378 more carats precede a single nameseg, the nameseg was treated as
14379 standalone and the search rule (to root) was inadvertently
14380 applied. This could cause both the iASL compiler and the
14381 interpreter to find the wrong object or to miss the error that
14382 should occur if the object does not exist at that exact pathname.
14384 Found and fixed the problem where the HP Pavilion DSDT would not
14385 load. This was a relatively minor tweak to the table loading code
14386 (a problem caused by the unexpected encounter with a method
14387 invocation not within a control method), but it does not solve the
14388 overall issue of the execution of AML code at the table level.
14389 This investigation is still ongoing.
14391 Code and Data Size: Current core subsystem library sizes are shown
14392 below. These are the code and data sizes for the acpica.lib
14393 produced by the Microsoft Visual C++ 6.0 compiler, and these
14394 values do not include any ACPI driver or OSPM code. The debug
14395 version of the code includes the debug output trace mechanism and
14396 has a larger code and data size. Note that these values will vary
14397 depending on the efficiency of the compiler and the compiler
14398 options used during generation.
14401 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14402 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14404 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14405 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14410 Remove redundant slab.h include (Brad Hards)
14412 Fix several bugs in thermal.c (Herbert Nachtnebel)
14414 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
14416 Change acpi_system_suspend to use updated irq functions (Pavel
14419 Export acpi_get_firmware_table (Matthew Wilcox)
14421 Use proper root proc entry for ACPI (Kochi Takayoshi)
14423 Fix early-boot table parsing (Bjorn Helgaas)
14426 3) iASL Compiler/Disassembler
14428 Reworked the compiler options to make them more consistent and to
14429 use two-letter options where appropriate. We were running out of
14430 sensible letters. This may break some makefiles, so check the
14431 current options list by invoking the compiler with no parameters.
14433 Completed the design and implementation of the ASL namepath
14434 optimization option for the compiler. This option optimizes all
14435 references to named objects to the shortest possible path. The
14436 first attempt tries to utilize a single nameseg (4 characters) and
14437 the "search-to-root" algorithm used by the interpreter. If that
14438 cannot be used (because either the name is not in the search path
14439 or there is a conflict with another object with the same name),
14440 the pathname is optimized using the carat prefix (usually a
14441 shorter string than specifying the entire path from the root.)
14443 Implemented support to obtain the DSDT from the Windows registry
14444 (when the disassembly option is specified with no input file).
14445 Added this code as the implementation for AcpiOsTableOverride in
14446 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
14447 utility) to scan memory for the DSDT to the AcpiOsTableOverride
14448 function in the DOS OSL to make the disassembler truly OS
14451 Implemented a new option to disassemble and compile in one step.
14452 When used without an input filename, this option will grab the
14453 DSDT from the local machine, disassemble it, and compile it in one
14456 Added a warning message for invalid escapes (a backslash followed
14457 by any character other than the allowable escapes). This catches
14458 the quoted string error "\_SB_" (which should be "\\_SB_" ).
14460 Also, there are numerous instances in the ACPI specification where
14463 Added a compiler option to disable all optimizations. This is
14464 basically the "compatibility mode" because by using this option,
14465 the AML code will come out exactly the same as other ASL
14468 Added error messages for incorrectly ordered dependent resource
14469 functions. This includes: missing EndDependentFn macro at end of
14470 dependent resource list, nested dependent function macros (both
14471 start and end), and missing StartDependentFn macro. These are
14472 common errors that should be caught at compile time.
14474 Implemented _OSI support for the disassembler and compiler. _OSI
14475 must be included in the namespace for proper disassembly (because
14476 the disassembler must know the number of arguments.)
14478 Added an "optimization" message type that is optional (off by
14479 default). This message is used for all optimizations - including
14480 constant folding, integer optimization, and namepath optimization.
14482 ----------------------------------------
14483 25 July 2002. Summary of changes for this release.
14486 1) ACPI CA Core Subsystem Version 20020725:
14488 The AML Disassembler has been enhanced to produce compilable ASL
14489 code and has been integrated into the iASL compiler (see below) as
14490 well as the single-step disassembly for the AML debugger and the
14491 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
14492 resource templates and macros are fully supported. The
14493 disassembler has been tested on over 30 different AML files,
14494 producing identical AML when the resulting disassembled ASL file
14495 is recompiled with the same ASL compiler.
14497 Modified the Resource Manager to allow zero interrupts and zero
14498 dma channels during the GetCurrentResources call. This was
14499 causing problems on some platforms.
14501 Added the AcpiOsRedirectOutput interface to the OSL to simplify
14502 output redirection for the AcpiOsPrintf and AcpiOsVprintf
14505 Code and Data Size: Current core subsystem library sizes are shown
14506 below. These are the code and data sizes for the acpica.lib
14507 produced by the Microsoft Visual C++ 6.0 compiler, and these
14508 values do not include any ACPI driver or OSPM code. The debug
14509 version of the code includes the debug output trace mechanism and
14510 has a larger code and data size. Note that these values will vary
14511 depending on the efficiency of the compiler and the compiler
14512 options used during generation.
14515 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14516 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14518 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14519 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14524 Fixed a panic in the EC driver (Dominik Brodowski)
14526 Implemented checksum of the R/XSDT itself during Linux table scan
14532 The AML disassembler is integrated into the compiler. The "-d"
14533 option invokes the disassembler to completely disassemble an
14534 input AML file, producing as output a text ASL file with the
14535 extension ".dsl" (to avoid name collisions with existing .asl
14536 source files.) A future enhancement will allow the disassembler
14537 to obtain the BIOS DSDT from the registry under Windows.
14539 Fixed a problem with the VendorShort and VendorLong resource
14540 descriptors where an invalid AML sequence was created.
14542 Implemented a fix for BufferData term in the ASL parser. It was
14543 inadvertently defined twice, allowing invalid syntax to pass and
14544 causing reduction conflicts.
14546 Fixed a problem where the Ones opcode could get converted to a
14547 value of zero if "Ones" was used where a byte, word or dword value
14548 was expected. The 64-bit value is now truncated to the correct
14549 size with the correct value.
14553 ----------------------------------------
14554 02 July 2002. Summary of changes for this release.
14557 1) ACPI CA Core Subsystem Version 20020702:
14559 The Table Manager code has been restructured to add several new
14560 features. Tables that are not required by the core subsystem
14561 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
14562 validated in any way and are returned from AcpiGetFirmwareTable if
14563 requested. The AcpiOsTableOverride interface is now called for
14564 each table that is loaded by the subsystem in order to allow the
14565 host to override any table it chooses. Previously, only the DSDT
14566 could be overridden. Added one new files, tbrsdt.c and
14569 Fixed a problem with the conversion of internal package objects to
14570 external objects (when a package is returned from a control
14571 method.) The return buffer length was set to zero instead of the
14572 proper length of the package object.
14574 Fixed a reported problem with the use of the RefOf and DeRefOf
14575 operators when passing reference arguments to control methods. A
14576 new type of Reference object is used internally for references
14577 produced by the RefOf operator.
14579 Added additional error messages in the Resource Manager to explain
14580 AE_BAD_DATA errors when they occur during resource parsing.
14582 Split the AcpiEnableSubsystem into two primitives to enable a
14583 finer granularity initialization sequence. These two calls should
14584 be called in this order: AcpiEnableSubsystem (flags),
14585 AcpiInitializeObjects (flags). The flags parameter remains the
14591 Updated the ACPI utilities module to understand the new style of
14592 fully resolved package objects that are now returned from the core
14593 subsystem. This eliminates errors of the form:
14595 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
14596 acpi_utils-0430 [145] acpi_evaluate_reference:
14597 Invalid element in package (not a device reference)
14599 The method evaluation utility uses the new buffer allocation
14600 scheme instead of calling AcpiEvaluate Object twice.
14602 Added support for ECDT. This allows the use of the Embedded
14604 Controller before the namespace has been fully initialized, which
14605 is necessary for ACPI 2.0 support, and for some laptops to
14606 initialize properly. (Laptops using ECDT are still rare, so only
14607 limited testing was performed of the added functionality.)
14609 Fixed memory leaks in the EC driver.
14611 Eliminated a brittle code structure in acpi_bus_init().
14613 Eliminated the acpi_evaluate() helper function in utils.c. It is
14614 no longer needed since acpi_evaluate_object can optionally
14615 allocate memory for the return object.
14617 Implemented fix for keyboard hang when getting battery readings on
14618 some systems (Stephen White)
14620 PCI IRQ routing update (Dominik Brodowski)
14622 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
14625 ----------------------------------------
14626 11 June 2002. Summary of changes for this release.
14629 1) ACPI CA Core Subsystem Version 20020611:
14631 Fixed a reported problem where constants such as Zero and One
14632 appearing within _PRT packages were not handled correctly within
14633 the resource manager code. Originally reported against the ASL
14634 compiler because the code generator now optimizes integers to
14635 their minimal AML representation (i.e. AML constants if possible.)
14636 The _PRT code now handles all AML constant opcodes correctly
14637 (Zero, One, Ones, Revision).
14639 Fixed a problem with the Concatenate operator in the AML
14640 interpreter where a buffer result object was incorrectly marked as
14641 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
14643 All package sub-objects are now fully resolved before they are
14644 returned from the external ACPI interfaces. This means that name
14645 strings are resolved to object handles, and constant operators
14646 (Zero, One, Ones, Revision) are resolved to Integers.
14648 Implemented immediate resolution of the AML Constant opcodes
14649 (Zero, One, Ones, Revision) to Integer objects upon detection
14650 within the AML stream. This has simplified and reduced the
14651 generated code size of the subsystem by eliminating about 10
14652 switch statements for these constants (which previously were
14653 contained in Reference objects.) The complicating issues are that
14654 the Zero opcode is used as a "placeholder" for unspecified
14655 optional target operands and stores to constants are defined to be
14658 Code and Data Size: Current core subsystem library sizes are shown
14659 below. These are the code and data sizes for the acpica.lib
14660 produced by the Microsoft Visual C++ 6.0 compiler, and these
14661 values do not include any ACPI driver or OSPM code. The debug
14662 version of the code includes the debug output trace mechanism and
14663 has a larger code and data size. Note that these values will vary
14664 depending on the efficiency of the compiler and the compiler
14665 options used during generation.
14668 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14669 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14671 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14672 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14678 Added preliminary support for obtaining _TRA data for PCI root
14679 bridges (Bjorn Helgaas).
14682 3) iASL Compiler Version X2046:
14684 Fixed a problem where the "_DDN" reserved name was defined to be a
14685 control method with one argument. There are no arguments, and
14686 _DDN does not have to be a control method.
14688 Fixed a problem with the Linux version of the compiler where the
14689 source lines printed with error messages were the wrong lines.
14690 This turned out to be the "LF versus CR/LF" difference between
14691 Windows and Unix. This appears to be the longstanding issue
14692 concerning listing output and error messages.
14694 Fixed a problem with the Linux version of compiler where opcode
14695 names within error messages were wrong. This was caused by a
14696 slight difference in the output of the Flex tool on Linux versus
14699 Fixed a problem with the Linux compiler where the hex output files
14700 contained some garbage data caused by an internal buffer overrun.
14703 ----------------------------------------
14704 17 May 2002. Summary of changes for this release.
14707 1) ACPI CA Core Subsystem Version 20020517:
14709 Implemented a workaround to an BIOS bug discovered on the HP
14710 OmniBook where the FADT revision number and the table size are
14711 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
14712 behavior is to fallback to using only the ACPI 1.0 fields of the
14713 FADT if the table is too small to be a ACPI 2.0 table as claimed
14714 by the revision number. Although this is a BIOS bug, this is a
14715 case where the workaround is simple enough and with no side
14716 effects, so it seemed prudent to add it. A warning message is
14719 Implemented minimum size checks for the fixed-length ACPI tables -
14720 - the FADT and FACS, as well as consistency checks between the
14721 revision number and the table size.
14723 Fixed a reported problem in the table override support where the
14724 new table pointer was incorrectly treated as a physical address
14725 instead of a logical address.
14727 Eliminated the use of the AE_AML_ERROR exception and replaced it
14728 with more descriptive codes.
14730 Fixed a problem where an exception would occur if an ASL Field was
14731 defined with no named Field Units underneath it (used by some
14734 Code and Data Size: Current core subsystem library sizes are shown
14735 below. These are the code and data sizes for the acpica.lib
14736 produced by the Microsoft Visual C++ 6.0 compiler, and these
14737 values do not include any ACPI driver or OSPM code. The debug
14738 version of the code includes the debug output trace mechanism and
14739 has a larger code and data size. Note that these values will vary
14740 depending on the efficiency of the compiler and the compiler
14741 options used during generation.
14744 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14745 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14747 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14748 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14754 Much work done on ACPI init (MADT and PCI IRQ routing support).
14755 (Paul D. and Dominik Brodowski)
14757 Fix PCI IRQ-related panic on boot (Sam Revitch)
14759 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
14761 Fix "MHz" typo (Dominik Brodowski)
14763 Fix RTC year 2000 issue (Dominik Brodowski)
14765 Preclude multiple button proc entries (Eric Brunet)
14767 Moved arch-specific code out of include/platform/aclinux.h
14769 3) iASL Compiler Version X2044:
14771 Implemented error checking for the string used in the EISAID macro
14772 (Usually used in the definition of the _HID object.) The code now
14773 strictly enforces the PnP format - exactly 7 characters, 3
14774 uppercase letters and 4 hex digits.
14776 If a raw string is used in the definition of the _HID object
14777 (instead of the EISAID macro), the string must contain all
14778 alphanumeric characters (e.g., "*PNP0011" is not allowed because
14781 Implemented checking for invalid use of ACPI reserved names for
14782 most of the name creation operators (Name, Device, Event, Mutex,
14783 OperationRegion, PowerResource, Processor, and ThermalZone.)
14784 Previously, this check was only performed for control methods.
14786 Implemented an additional check on the Name operator to emit an
14787 error if a reserved name that must be implemented in ASL as a
14788 control method is used. We know that a reserved name must be a
14789 method if it is defined with input arguments.
14791 The warning emitted when a namespace object reference is not found
14792 during the cross reference phase has been changed into an error.
14793 The "External" directive should be used for names defined in other
14797 4) Tools and Utilities
14799 The 16-bit tools (adump16 and aexec16) have been regenerated and
14802 Fixed a problem with the output of both acpidump and adump16 where
14803 the indentation of closing parentheses and brackets was not
14805 aligned properly with the parent block.
14808 ----------------------------------------
14809 03 May 2002. Summary of changes for this release.
14812 1) ACPI CA Core Subsystem Version 20020503:
14814 Added support a new OSL interface that allows the host operating
14816 system software to override the DSDT found in the firmware -
14817 AcpiOsTableOverride. With this interface, the OSL can examine the
14818 version of the firmware DSDT and replace it with a different one
14821 Added new external interfaces for accessing ACPI registers from
14822 device drivers and other system software - AcpiGetRegister and
14823 AcpiSetRegister. This was simply an externalization of the
14824 existing AcpiHwBitRegister interfaces.
14826 Fixed a regression introduced in the previous build where the
14827 ASL/AML CreateField operator always returned an error,
14828 "destination must be a NS Node".
14830 Extended the maximum time (before failure) to successfully enable
14831 ACPI mode to 3 seconds.
14833 Code and Data Size: Current core subsystem library sizes are shown
14834 below. These are the code and data sizes for the acpica.lib
14835 produced by the Microsoft Visual C++ 6.0 compiler, and these
14836 values do not include any ACPI driver or OSPM code. The debug
14837 version of the code includes the debug output trace mechanism and
14838 has a larger code and data size. Note that these values will vary
14839 depending on the efficiency of the compiler and the compiler
14840 options used during generation.
14843 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14844 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14846 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14847 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14852 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
14853 free. While 3 out of 4 of our in-house systems work fine, the last
14854 one still hangs when testing the LAPIC timer.
14856 Renamed many files in 2.5 kernel release to omit "acpi_" from the
14859 Added warning on boot for Presario 711FR.
14861 Sleep improvements (Pavel Machek)
14863 ACPI can now be built without CONFIG_PCI enabled.
14865 IA64: Fixed memory map functions (JI Lee)
14868 3) iASL Compiler Version X2043:
14870 Added support to allow the compiler to be integrated into the MS
14871 VC++ development environment for one-button compilation of single
14872 files or entire projects -- with error-to-source-line mapping.
14874 Implemented support for compile-time constant folding for the
14875 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
14876 specification. This allows the ASL writer to use expressions
14877 instead of Integer/Buffer/String constants in terms that must
14878 evaluate to constants at compile time and will also simplify the
14879 emitted AML in any such sub-expressions that can be folded
14880 (evaluated at compile-time.) This increases the size of the
14881 compiler significantly because a portion of the ACPI CA AML
14882 interpreter is included within the compiler in order to pre-
14883 evaluate constant expressions.
14886 Fixed a problem with the "Unicode" ASL macro that caused the
14887 compiler to fault. (This macro is used in conjunction with the
14888 _STR reserved name.)
14890 Implemented an AML opcode optimization to use the Zero, One, and
14891 Ones opcodes where possible to further reduce the size of integer
14892 constants and thus reduce the overall size of the generated AML
14895 Implemented error checking for new reserved terms for ACPI version
14898 Implemented the -qr option to display the current list of ACPI
14899 reserved names known to the compiler.
14901 Implemented the -qc option to display the current list of ASL
14902 operators that are allowed within constant expressions and can
14903 therefore be folded at compile time if the operands are constants.
14908 Updated the Programmer's Reference for new interfaces, data types,
14909 and memory allocation model options.
14911 Updated the iASL Compiler User Reference to apply new format and
14912 add information about new features and options.
14914 ----------------------------------------
14915 19 April 2002. Summary of changes for this release.
14917 1) ACPI CA Core Subsystem Version 20020419:
14919 The source code base for the Core Subsystem has been completely
14920 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
14921 versions. The Lint option files used are included in the
14922 /acpi/generate/lint directory.
14924 Implemented enhanced status/error checking across the entire
14925 Hardware manager subsystem. Any hardware errors (reported from
14926 the OSL) are now bubbled up and will abort a running control
14930 Fixed a problem where the per-ACPI-table integer width (32 or 64)
14931 was stored only with control method nodes, causing a fault when
14932 non-control method code was executed during table loading. The
14933 solution implemented uses a global variable to indicate table
14934 width across the entire ACPI subsystem. Therefore, ACPI CA does
14935 not support mixed integer widths across different ACPI tables
14938 Fixed a problem where NULL extended fields (X fields) in an ACPI
14939 2.0 ACPI FADT caused the table load to fail. Although the
14940 existing ACPI specification is a bit fuzzy on this topic, the new
14941 behavior is to fall back on a ACPI 1.0 field if the corresponding
14942 ACPI 2.0 X field is zero (even though the table revision indicates
14943 a full ACPI 2.0 table.) The ACPI specification will be updated to
14944 clarify this issue.
14946 Fixed a problem with the SystemMemory operation region handler
14947 where memory was always accessed byte-wise even if the AML-
14948 specified access width was larger than a byte. This caused
14949 problems on systems with memory-mapped I/O. Memory is now
14950 accessed with the width specified. On systems that do not support
14951 non-aligned transfers, a check is made to guarantee proper address
14952 alignment before proceeding in order to avoid an AML-caused
14953 alignment fault within the kernel.
14956 Fixed a problem with the ExtendedIrq resource where only one byte
14957 of the 4-byte Irq field was extracted.
14959 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
14960 function was out of date and required a rewrite.
14962 Code and Data Size: Current core subsystem library sizes are shown
14963 below. These are the code and data sizes for the acpica.lib
14964 produced by the Microsoft Visual C++ 6.0 compiler, and these
14965 values do not include any ACPI driver or OSPM code. The debug
14966 version of the code includes the debug output trace mechanism and
14967 has a larger code and data size. Note that these values will vary
14968 depending on the efficiency of the compiler and the compiler
14969 options used during generation.
14972 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14973 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14975 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14976 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14981 PCI IRQ routing fixes (Dominik Brodowski)
14984 3) iASL Compiler Version X2042:
14986 Implemented an additional compile-time error check for a field
14987 unit whose size + minimum access width would cause a run-time
14988 access beyond the end-of-region. Previously, only the field size
14989 itself was checked.
14991 The Core subsystem and iASL compiler now share a common parse
14992 object in preparation for compile-time evaluation of the type
14993 3/4/5 ASL operators.
14996 ----------------------------------------
14997 Summary of changes for this release: 03_29_02
14999 1) ACPI CA Core Subsystem Version 20020329:
15001 Implemented support for late evaluation of TermArg operands to
15002 Buffer and Package objects. This allows complex expressions to be
15003 used in the declarations of these object types.
15005 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15006 1.0, if the field was larger than 32 bits, it was returned as a
15007 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15008 the field is returned as a buffer only if the field is larger than
15009 64 bits. The TableRevision is now considered when making this
15010 conversion to avoid incompatibility with existing ASL code.
15012 Implemented logical addressing for AcpiOsGetRootPointer. This
15013 allows an RSDP with either a logical or physical address. With
15014 this support, the host OS can now override all ACPI tables with
15015 one logical RSDP. Includes implementation of "typed" pointer
15016 support to allow a common data type for both physical and logical
15017 pointers internally. This required a change to the
15018 AcpiOsGetRootPointer interface.
15020 Implemented the use of ACPI 2.0 Generic Address Structures for all
15021 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15022 mapped I/O for these ACPI features.
15024 Initialization now ignores not only non-required tables (All
15025 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
15026 not validate the table headers of unrecognized tables.
15028 Fixed a problem where a notify handler could only be
15029 installed/removed on an object of type Device. All "notify"
15031 objects are now supported -- Devices, Processor, Power, and
15034 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15035 critical information is returned when this debug level is enabled.
15037 Code and Data Size: Current core subsystem library sizes are shown
15038 below. These are the code and data sizes for the acpica.lib
15039 produced by the Microsoft Visual C++ 6.0 compiler, and these
15040 values do not include any ACPI driver or OSPM code. The debug
15041 version of the code includes the debug output trace mechanism and
15042 has a larger code and data size. Note that these values will vary
15043 depending on the efficiency of the compiler and the compiler
15044 options used during generation.
15047 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15048 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15050 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15051 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15056 The processor driver (acpi_processor.c) now fully supports ACPI
15057 2.0-based processor performance control (e.g. Intel(R)
15058 SpeedStep(TM) technology) Note that older laptops that only have
15059 the Intel "applet" interface are not supported through this. The
15060 'limit' and 'performance' interface (/proc) are fully functional.
15061 [Note that basic policy for controlling performance state
15062 transitions will be included in the next version of ospmd.] The
15063 idle handler was modified to more aggressively use C2, and PIIX4
15064 errata handling underwent a complete overhaul (big thanks to
15065 Dominik Brodowski).
15067 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15068 based devices in the ACPI namespace are now dynamically bound
15069 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15070 This allows, among other things, ACPI to resolve bus numbers for
15071 subordinate PCI bridges.
15073 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15074 entries defined underneath PCI bridges.
15076 Added IBM 600E to bad bios list due to invalid _ADR value for
15077 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15079 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15080 (acpi.c, mpparse.c) -- stay tuned.
15082 Added back visual differentiation between fixed-feature and
15083 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15084 button/power/PWRF) to simplify button identification.
15086 We no longer use -Wno-unused when compiling debug. Please ignore
15087 any "_THIS_MODULE defined but not used" messages.
15089 Can now shut down the system using "magic sysrq" key.
15092 3) iASL Compiler version 2041:
15094 Fixed a problem where conversion errors for hex/octal/decimal
15095 constants were not reported.
15097 Implemented a fix for the General Register template Address field.
15098 This field was 8 bits when it should be 64.
15100 Fixed a problem where errors/warnings were no longer being emitted
15101 within the listing output file.
15103 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15104 exactly 4 characters, alphanumeric only.
15109 ----------------------------------------
15110 Summary of changes for this release: 03_08_02
15113 1) ACPI CA Core Subsystem Version 20020308:
15115 Fixed a problem with AML Fields where the use of the "AccessAny"
15116 keyword could cause an interpreter error due to attempting to read
15117 or write beyond the end of the parent Operation Region.
15119 Fixed a problem in the SystemMemory Operation Region handler where
15120 an attempt was made to map memory beyond the end of the region.
15121 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15122 errors on some Linux systems.
15124 Fixed a problem where the interpreter/namespace "search to root"
15125 algorithm was not functioning for some object types. Relaxed the
15126 internal restriction on the search to allow upsearches for all
15127 external object types as well as most internal types.
15132 We now use safe_halt() macro versus individual calls to sti | hlt.
15134 Writing to the processor limit interface should now work. "echo 1"
15135 will increase the limit, 2 will decrease, and 0 will reset to the
15142 Fixed segfault on Linux version.
15145 ----------------------------------------
15146 Summary of changes for this release: 02_25_02
15148 1) ACPI CA Core Subsystem:
15151 Fixed a problem where the GPE bit masks were not initialized
15152 properly, causing erratic GPE behavior.
15154 Implemented limited support for multiple calling conventions. The
15155 code can be generated with either the VPL (variable parameter
15156 list, or "C") convention, or the FPL (fixed parameter list, or
15157 "Pascal") convention. The core subsystem is about 3.4% smaller
15158 when generated with FPL.
15163 Re-add some /proc/acpi/event functionality that was lost during
15166 Resolved issue with /proc events for fixed-feature buttons showing
15167 up as the system device.
15169 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15171 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15173 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15175 Fixed limit interface & usage to fix bugs with passive cooling
15178 Restructured PRT support.
15181 ----------------------------------------
15182 Summary of changes for this label: 02_14_02
15185 1) ACPI CA Core Subsystem:
15187 Implemented support in AcpiLoadTable to allow loading of FACS and
15190 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15191 been removed. All 64-bit platforms should be migrated to the ACPI
15192 2.0 tables. The actbl71.h header has been removed from the source
15195 All C macros defined within the subsystem have been prefixed with
15196 "ACPI_" to avoid collision with other system include files.
15198 Removed the return value for the two AcpiOsPrint interfaces, since
15199 it is never used and causes lint warnings for ignoring the return
15202 Added error checking to all internal mutex acquire and release
15203 calls. Although a failure from one of these interfaces is
15204 probably a fatal system error, these checks will cause the
15205 immediate abort of the currently executing method or interface.
15207 Fixed a problem where the AcpiSetCurrentResources interface could
15208 fault. This was a side effect of the deployment of the new memory
15211 Fixed a couple of problems with the Global Lock support introduced
15212 in the last major build. The "common" (1.0/2.0) internal FACS was
15213 being overwritten with the FACS signature and clobbering the
15214 Global Lock pointer. Also, the actual firmware FACS was being
15215 unmapped after construction of the "common" FACS, preventing
15216 access to the actual Global Lock field within it. The "common"
15217 internal FACS is no longer installed as an actual ACPI table; it
15218 is used simply as a global.
15220 Code and Data Size: Current core subsystem library sizes are shown
15221 below. These are the code and data sizes for the acpica.lib
15222 produced by the Microsoft Visual C++ 6.0 compiler, and these
15223 values do not include any ACPI driver or OSPM code. The debug
15224 version of the code includes the debug output trace mechanism and
15225 has a larger code and data size. Note that these values will vary
15226 depending on the efficiency of the compiler and the compiler
15227 options used during generation.
15229 Previous Release (02_07_01)
15230 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15231 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15233 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15234 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15239 Updated Linux-specific code for core macro and OSL interface
15240 changes described above.
15242 Improved /proc/acpi/event. It now can be opened only once and has
15243 proper poll functionality.
15245 Fixed and restructured power management (acpi_bus).
15247 Only create /proc "view by type" when devices of that class exist.
15249 Fixed "charging/discharging" bug (and others) in acpi_battery.
15251 Improved thermal zone code.
15254 3) ASL Compiler, version X2039:
15257 Implemented the new compiler restriction on ASL String hex/octal
15258 escapes to non-null, ASCII values. An error results if an invalid
15259 value is used. (This will require an ACPI 2.0 specification
15262 AML object labels that are output to the optional C and ASM source
15263 are now prefixed with both the ACPI table signature and table ID
15264 to help guarantee uniqueness within a large BIOS project.
15267 ----------------------------------------
15268 Summary of changes for this label: 02_01_02
15270 1) ACPI CA Core Subsystem:
15272 ACPI 2.0 support is complete in the entire Core Subsystem and the
15273 ASL compiler. All new ACPI 2.0 operators are implemented and all
15274 other changes for ACPI 2.0 support are complete. With
15275 simultaneous code and data optimizations throughout the subsystem,
15276 ACPI 2.0 support has been implemented with almost no additional
15277 cost in terms of code and data size.
15279 Implemented a new mechanism for allocation of return buffers. If
15280 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
15281 be allocated on behalf of the caller. Consolidated all return
15282 buffer validation and allocation to a common procedure. Return
15283 buffers will be allocated via the primary OSL allocation interface
15284 since it appears that a separate pool is not needed by most users.
15285 If a separate pool is required for these buffers, the caller can
15286 still use the original mechanism and pre-allocate the buffer(s).
15288 Implemented support for string operands within the DerefOf
15291 Restructured the Hardware and Event managers to be table driven,
15292 simplifying the source code and reducing the amount of generated
15295 Split the common read/write low-level ACPI register bitfield
15296 procedure into a separate read and write, simplifying the code
15299 Obsoleted the AcpiOsCallocate OSL interface. This interface was
15300 used only a handful of times and didn't have enough critical mass
15301 for a separate interface. Replaced with a common calloc procedure
15304 Fixed a reported problem with the GPE number mapping mechanism
15305 that allows GPE1 numbers to be non-contiguous with GPE0.
15306 Reorganized the GPE information and shrunk a large array that was
15307 originally large enough to hold info for all possible GPEs (256)
15308 to simply large enough to hold all GPEs up to the largest GPE
15309 number on the machine.
15311 Fixed a reported problem with resource structure alignment on 64-
15314 Changed the AcpiEnableEvent and AcpiDisableEvent external
15315 interfaces to not require any flags for the common case of
15316 enabling/disabling a GPE.
15318 Implemented support to allow a "Notify" on a Processor object.
15320 Most TBDs in comments within the source code have been resolved
15324 Fixed a problem in the interpreter where a standalone parent
15325 prefix (^) was not handled correctly in the interpreter and
15328 Removed obsolete and unnecessary GPE save/restore code.
15330 Implemented Field support in the ASL Load operator. This allows a
15331 table to be loaded from a named field, in addition to loading a
15332 table directly from an Operation Region.
15334 Implemented timeout and handle support in the external Global Lock
15337 Fixed a problem in the AcpiDump utility where pathnames were no
15338 longer being generated correctly during the dump of named objects.
15340 Modified the AML debugger to give a full display of if/while
15341 predicates instead of just one AML opcode at a time. (The
15342 predicate can have several nested ASL statements.) The old method
15343 was confusing during single stepping.
15345 Code and Data Size: Current core subsystem library sizes are shown
15346 below. These are the code and data sizes for the acpica.lib
15347 produced by the Microsoft Visual C++ 6.0 compiler, and these
15348 values do not include any ACPI driver or OSPM code. The debug
15349 version of the code includes the debug output trace mechanism and
15350 has a larger code and data size. Note that these values will vary
15351 depending on the efficiency of the compiler and the compiler
15352 options used during generation.
15354 Previous Release (12_18_01)
15355 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15356 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15358 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15359 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15363 Implemented fix for PIIX reverse throttling errata (Processor
15366 Added new Limit interface (Processor and Thermal drivers)
15368 New thermal policy (Thermal driver)
15370 Many updates to /proc
15372 Battery "low" event support (Battery driver)
15374 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
15376 IA32 - IA64 initialization unification, no longer experimental
15378 Menuconfig options redesigned
15380 3) ASL Compiler, version X2037:
15382 Implemented several new output features to simplify integration of
15383 AML code into firmware: 1) Output the AML in C source code with
15384 labels for each named ASL object. The original ASL source code
15385 is interleaved as C comments. 2) Output the AML in ASM source code
15386 with labels and interleaved ASL source. 3) Output the AML in
15387 raw hex table form, in either C or ASM.
15389 Implemented support for optional string parameters to the
15390 LoadTable operator.
15392 Completed support for embedded escape sequences within string
15393 literals. The compiler now supports all single character escapes
15394 as well as the Octal and Hex escapes. Note: the insertion of a
15395 null byte into a string literal (via the hex/octal escape) causes
15396 the string to be immediately terminated. A warning is issued.
15398 Fixed a problem where incorrect AML was generated for the case
15399 where an ASL namepath consists of a single parent prefix (
15401 ) with no trailing name segments.
15403 The compiler has been successfully generated with a 64-bit C
15409 ----------------------------------------
15410 Summary of changes for this label: 12_18_01
15414 Enhanced blacklist with reason and severity fields. Any table's
15415 signature may now be used to identify a blacklisted system.
15417 Call _PIC control method to inform the firmware which interrupt
15418 model the OS is using. Turn on any disabled link devices.
15420 Cleaned up busmgr /proc error handling (Andreas Dilger)
15422 2) ACPI CA Core Subsystem:
15424 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
15427 Completed implementation of the ACPI 2.0 "Continue",
15428 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
15429 operators. All new ACPI 2.0 operators are now implemented in both
15430 the ASL compiler and the AML interpreter. The only remaining ACPI
15431 2.0 task is support for the String data type in the DerefOf
15432 operator. Fixed a problem with AcquireMutex where the status code
15433 was lost if the caller had to actually wait for the mutex.
15435 Increased the maximum ASL Field size from 64K bits to 4G bits.
15437 Completed implementation of the external Global Lock interfaces --
15438 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
15439 Handler parameters were added.
15441 Completed another pass at removing warnings and issues when
15442 compiling with 64-bit compilers. The code now compiles cleanly
15443 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
15444 add and subtract (diff) macros have changed considerably.
15447 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
15448 64-bit platforms, 32-bits on all others. This type is used
15449 wherever memory allocation and/or the C sizeof() operator is used,
15450 and affects the OSL memory allocation interfaces AcpiOsAllocate
15451 and AcpiOsCallocate.
15453 Implemented sticky user breakpoints in the AML debugger.
15455 Code and Data Size: Current core subsystem library sizes are shown
15456 below. These are the code and data sizes for the acpica.lib
15457 produced by the Microsoft Visual C++ 6.0 compiler, and these
15458 values do not include any ACPI driver or OSPM code. The debug
15459 version of the code includes the debug output trace mechanism and
15460 has a larger code and data size. Note that these values will vary
15461 depending on the efficiency of the compiler and the compiler
15462 options used during generation.
15464 Previous Release (12_05_01)
15465 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15466 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15468 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15469 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15471 3) ASL Compiler, version X2034:
15473 Now checks for (and generates an error if detected) the use of a
15474 Break or Continue statement without an enclosing While statement.
15477 Successfully generated the compiler with the Intel 64-bit C
15480 ----------------------------------------
15481 Summary of changes for this label: 12_05_01
15483 1) ACPI CA Core Subsystem:
15485 The ACPI 2.0 CopyObject operator is fully implemented. This
15486 operator creates a new copy of an object (and is also used to
15487 bypass the "implicit conversion" mechanism of the Store operator.)
15489 The ACPI 2.0 semantics for the SizeOf operator are fully
15490 implemented. The change is that performing a SizeOf on a
15491 reference object causes an automatic dereference of the object to
15492 tha actual value before the size is evaluated. This behavior was
15493 undefined in ACPI 1.0.
15495 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
15496 have been implemented. The interrupt polarity and mode are now
15499 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
15500 appearing in Package objects were not properly converted to
15501 integers when the internal Package was converted to an external
15502 object (via the AcpiEvaluateObject interface.)
15504 Fixed a problem with the namespace object deletion mechanism for
15505 objects created by control methods. There were two parts to this
15506 problem: 1) Objects created during the initialization phase method
15507 parse were not being deleted, and 2) The object owner ID mechanism
15508 to track objects was broken.
15510 Fixed a problem where the use of the ASL Scope operator within a
15511 control method would result in an invalid opcode exception.
15513 Fixed a problem introduced in the previous label where the buffer
15514 length required for the _PRT structure was not being returned
15517 Code and Data Size: Current core subsystem library sizes are shown
15518 below. These are the code and data sizes for the acpica.lib
15519 produced by the Microsoft Visual C++ 6.0 compiler, and these
15520 values do not include any ACPI driver or OSPM code. The debug
15521 version of the code includes the debug output trace mechanism and
15522 has a larger code and data size. Note that these values will vary
15523 depending on the efficiency of the compiler and the compiler
15524 options used during generation.
15526 Previous Release (11_20_01)
15527 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15528 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15531 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15532 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15536 Updated all files to apply cleanly against 2.4.16.
15538 Added basic PCI Interrupt Routing Table (PRT) support for IA32
15539 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
15540 version supports both static and dyanmic PRT entries, but dynamic
15541 entries are treated as if they were static (not yet
15542 reconfigurable). Architecture- specific code to use this data is
15543 absent on IA32 but should be available shortly.
15545 Changed the initialization sequence to start the ACPI interpreter
15546 (acpi_init) prior to initialization of the PCI driver (pci_init)
15547 in init/main.c. This ordering is required to support PRT and
15548 facilitate other (future) enhancement. A side effect is that the
15549 ACPI bus driver and certain device drivers can no longer be loaded
15552 Modified the 'make menuconfig' options to allow PCI Interrupt
15553 Routing support to be included without the ACPI Bus and other
15556 3) ASL Compiler, version X2033:
15558 Fixed some issues with the use of the new CopyObject and
15559 DataTableRegion operators. Both are fully functional.
15561 ----------------------------------------
15562 Summary of changes for this label: 11_20_01
15564 20 November 2001. Summary of changes for this release.
15566 1) ACPI CA Core Subsystem:
15568 Updated Index support to match ACPI 2.0 semantics. Storing a
15569 Integer, String, or Buffer to an Index of a Buffer will store only
15570 the least-significant byte of the source to the Indexed buffer
15571 byte. Multiple writes are not performed.
15573 Fixed a problem where the access type used in an AccessAs ASL
15574 operator was not recorded correctly into the field object.
15576 Fixed a problem where ASL Event objects were created in a
15577 signalled state. Events are now created in an unsignalled state.
15579 The internal object cache is now purged after table loading and
15580 initialization to reduce the use of dynamic kernel memory -- on
15581 the assumption that object use is greatest during the parse phase
15582 of the entire table (versus the run-time use of individual control
15585 ACPI 2.0 variable-length packages are now fully operational.
15587 Code and Data Size: Code and Data optimizations have permitted new
15588 feature development with an actual reduction in the library size.
15589 Current core subsystem library sizes are shown below. These are
15590 the code and data sizes for the acpica.lib produced by the
15591 Microsoft Visual C++ 6.0 compiler, and these values do not include
15592 any ACPI driver or OSPM code. The debug version of the code
15593 includes the debug output trace mechanism and has a larger code
15594 and data size. Note that these values will vary depending on the
15595 efficiency of the compiler and the compiler options used during
15598 Previous Release (11_09_01):
15599 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15600 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15603 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15604 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15608 Enhanced the ACPI boot-time initialization code to allow the use
15609 of Local APIC tables for processor enumeration on IA-32, and to
15610 pave the way for a fully MPS-free boot (on SMP systems) in the
15611 near future. This functionality replaces
15612 arch/i386/kernel/acpitables.c, which was introduced in an earlier
15613 2.4.15-preX release. To enable this feature you must add
15614 "acpi_boot=on" to the kernel command line -- see the help entry
15615 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
15618 Restructured the configuration options to allow boot-time table
15619 parsing support without inclusion of the ACPI Interpreter (and
15622 NOTE: This release does not include fixes for the reported events,
15623 power-down, and thermal passive cooling issues (coming soon).
15627 Added additional typechecking for Fields within restricted access
15628 Operation Regions. All fields within EC and CMOS regions must be
15629 declared with ByteAcc. All fields withing SMBus regions must be
15630 declared with the BufferAcc access type.
15632 Fixed a problem where the listing file output of control methods
15633 no longer interleaved the actual AML code with the ASL source
15639 ----------------------------------------
15640 Summary of changes for this label: 11_09_01
15642 1) ACPI CA Core Subsystem:
15644 Implemented ACPI 2.0-defined support for writes to fields with a
15645 Buffer, String, or Integer source operand that is smaller than the
15646 target field. In these cases, the source operand is zero-extended
15647 to fill the target field.
15649 Fixed a problem where a Field starting bit offset (within the
15650 parent operation region) was calculated incorrectly if the
15652 alignment of the field differed from the access width. This
15653 affected CreateWordField, CreateDwordField, CreateQwordField, and
15654 possibly other fields that use the "AccessAny" keyword.
15656 Fixed a problem introduced in the 11_02_01 release where indirect
15657 stores through method arguments did not operate correctly.
15661 Implemented boot-time ACPI table parsing support
15662 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
15663 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
15664 legacy BIOS interfaces (e.g. MPS) for the configuration of system
15665 processors, memory, and interrupts during setup_arch(). Note that
15666 this patch does not include the required architecture-specific
15667 changes required to apply this information -- subsequent patches
15668 will be posted for both IA32 and IA64 to achieve this.
15670 Added low-level sleep support for IA32 platforms, courtesy of Pat
15671 Mochel. This allows IA32 systems to transition to/from various
15672 sleeping states (e.g. S1, S3), although the lack of a centralized
15673 driver model and power-manageable drivers will prevent its
15674 (successful) use on most systems.
15676 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
15677 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
15678 tables" option, etc.
15680 Increased the default timeout for the EC driver from 1ms to 10ms
15681 (1000 cycles of 10us) to try to address AE_TIME errors during EC
15684 ----------------------------------------
15685 Summary of changes for this label: 11_02_01
15687 1) ACPI CA Core Subsystem:
15689 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
15690 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
15693 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
15694 changes to support ACPI 2.0 Qword field access. Read/Write
15695 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
15696 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
15697 the value parameter for the address space handler interface is now
15698 an ACPI_INTEGER. OSL implementations of these interfaces must now
15699 handle the case where the Width parameter is 64.
15701 Index Fields: Fixed a problem where unaligned bit assembly and
15702 disassembly for IndexFields was not supported correctly.
15704 Index and Bank Fields: Nested Index and Bank Fields are now
15705 supported. During field access, a check is performed to ensure
15706 that the value written to an Index or Bank register is not out of
15707 the range of the register. The Index (or Bank) register is
15708 written before each access to the field data. Future support will
15709 include allowing individual IndexFields to be wider than the
15710 DataRegister width.
15712 Fields: Fixed a problem where the AML interpreter was incorrectly
15713 attempting to write beyond the end of a Field/OpRegion. This was
15714 a boundary case that occurred when a DWORD field was written to a
15715 BYTE access OpRegion, forcing multiple writes and causing the
15716 interpreter to write one datum too many.
15718 Fields: Fixed a problem with Field/OpRegion access where the
15719 starting bit address of a field was incorrectly calculated if the
15720 current access type was wider than a byte (WordAcc, DwordAcc, or
15723 Fields: Fixed a problem where forward references to individual
15724 FieldUnits (individual Field names within a Field definition) were
15725 not resolved during the AML table load.
15727 Fields: Fixed a problem where forward references from a Field
15728 definition to the parent Operation Region definition were not
15729 resolved during the AML table load.
15731 Fields: Duplicate FieldUnit names within a scope are now detected
15732 during AML table load.
15734 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
15735 returned an incorrect name for the root node.
15737 Code and Data Size: Code and Data optimizations have permitted new
15738 feature development with an actual reduction in the library size.
15739 Current core subsystem library sizes are shown below. These are
15740 the code and data sizes for the acpica.lib produced by the
15741 Microsoft Visual C++ 6.0 compiler, and these values do not include
15742 any ACPI driver or OSPM code. The debug version of the code
15743 includes the debug output trace mechanism and has a larger code
15744 and data size. Note that these values will vary depending on the
15745 efficiency of the compiler and the compiler options used during
15748 Previous Release (10_18_01):
15749 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15750 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15753 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15754 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15758 Improved /proc processor output (Pavel Machek) Re-added
15759 MODULE_LICENSE("GPL") to all modules.
15761 3) ASL Compiler version X2030:
15763 Duplicate FieldUnit names within a scope are now detected and
15768 Programmer Reference updated to reflect OSL and address space
15769 handler interface changes described above.
15771 ----------------------------------------
15772 Summary of changes for this label: 10_18_01
15774 ACPI CA Core Subsystem:
15776 Fixed a problem with the internal object reference count mechanism
15777 that occasionally caused premature object deletion. This resolves
15778 all of the outstanding problem reports where an object is deleted
15779 in the middle of an interpreter evaluation. Although this problem
15780 only showed up in rather obscure cases, the solution to the
15781 problem involved an adjustment of all reference counts involving
15782 objects attached to namespace nodes.
15784 Fixed a problem with Field support in the interpreter where
15785 writing to an aligned field whose length is an exact multiple (2
15786 or greater) of the field access granularity would cause an attempt
15787 to write beyond the end of the field.
15789 The top level AML opcode execution functions within the
15790 interpreter have been renamed with a more meaningful and
15791 consistent naming convention. The modules exmonad.c and
15792 exdyadic.c were eliminated. New modules are exoparg1.c,
15793 exoparg2.c, exoparg3.c, and exoparg6.c.
15795 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
15797 Fixed a problem where the AML debugger was causing some internal
15798 objects to not be deleted during subsystem termination.
15800 Fixed a problem with the external AcpiEvaluateObject interface
15801 where the subsystem would fault if the named object to be
15802 evaluated refered to a constant such as Zero, Ones, etc.
15804 Fixed a problem with IndexFields and BankFields where the
15805 subsystem would fault if the index, data, or bank registers were
15806 not defined in the same scope as the field itself.
15808 Added printf format string checking for compilers that support
15809 this feature. Corrected more than 50 instances of issues with
15810 format specifiers within invocations of ACPI_DEBUG_PRINT
15811 throughout the core subsystem code.
15813 The ASL "Revision" operator now returns the ACPI support level
15814 implemented in the core - the value "2" since the ACPI 2.0 support
15815 is more than 50% implemented.
15817 Enhanced the output of the AML debugger "dump namespace" command
15818 to output in a more human-readable form.
15820 Current core subsystem library code sizes are shown below. These
15822 are the code and data sizes for the acpica.lib produced by the
15823 Microsoft Visual C++ 6.0 compiler, and these values do not include
15824 any ACPI driver or OSPM code. The debug version of the code
15825 includes the full debug trace mechanism -- leading to a much
15827 larger code and data size. Note that these values will vary
15828 depending on the efficiency of the compiler and the compiler
15829 options used during generation.
15831 Previous Label (09_20_01):
15832 Non-Debug Version: 65K Code, 5K Data, 70K Total
15833 Debug Version: 138K Code, 58K Data, 196K Total
15837 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15838 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15842 Implemented a "Bad BIOS Blacklist" to track machines that have
15843 known ASL/AML problems.
15845 Enhanced the /proc interface for the thermal zone driver and added
15846 support for _HOT (the critical suspend trip point). The 'info'
15847 file now includes threshold/policy information, and allows setting
15848 of _SCP (cooling preference) and _TZP (polling frequency) values
15849 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
15850 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
15851 preference to the passive/quiet mode (if supported by the ASL).
15853 Implemented a workaround for a gcc bug that resuted in an OOPs
15854 when loading the control method battery driver.
15856 ----------------------------------------
15857 Summary of changes for this label: 09_20_01
15859 ACPI CA Core Subsystem:
15861 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
15862 modified to allow individual GPE levels to be flagged as wake-
15863 enabled (i.e., these GPEs are to remain enabled when the platform
15866 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
15867 support wake-enabled GPEs. This means that upon entering the
15868 sleep state, all GPEs that are not wake-enabled are disabled.
15869 When leaving the sleep state, these GPEs are reenabled.
15871 A local double-precision divide/modulo module has been added to
15872 enhance portability to OS kernels where a 64-bit math library is
15873 not available. The new module is "utmath.c".
15875 Several optimizations have been made to reduce the use of CPU
15876 stack. Originally over 2K, the maximum stack usage is now below
15877 2K at 1860 bytes (1.82k)
15879 Fixed a problem with the AcpiGetFirmwareTable interface where the
15880 root table pointer was not mapped into a logical address properly.
15882 Fixed a problem where a NULL pointer was being dereferenced in the
15883 interpreter code for the ASL Notify operator.
15885 Fixed a problem where the use of the ASL Revision operator
15886 returned an error. This operator now returns the current version
15887 of the ACPI CA core subsystem.
15889 Fixed a problem where objects passed as control method parameters
15890 to AcpiEvaluateObject were always deleted at method termination.
15891 However, these objects may end up being stored into the namespace
15892 by the called method. The object reference count mechanism was
15893 applied to these objects instead of a force delete.
15895 Fixed a problem where static strings or buffers (contained in the
15896 AML code) that are declared as package elements within the ASL
15897 code could cause a fault because the interpreter would attempt to
15898 delete them. These objects are now marked with the "static
15899 object" flag to prevent any attempt to delete them.
15901 Implemented an interpreter optimization to use operands directly
15902 from the state object instead of extracting the operands to local
15903 variables. This reduces stack use and code size, and improves
15906 The module exxface.c was eliminated as it was an unnecessary extra
15909 Current core subsystem library code sizes are shown below. These
15910 are the code and data sizes for the acpica.lib produced by the
15911 Microsoft Visual C++ 6.0 compiler, and these values do not include
15912 any ACPI driver or OSPM code. The debug version of the code
15913 includes the full debug trace mechanism -- leading to a much
15914 larger code and data size. Note that these values will vary
15915 depending on the efficiency of the compiler and the compiler
15916 options used during generation.
15918 Non-Debug Version: 65K Code, 5K Data, 70K Total
15919 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
15920 Total (Previously 195K)
15924 Support for ACPI 2.0 64-bit integers has been added. All ACPI
15925 Integer objects are now 64 bits wide
15927 All Acpi data types and structures are now in lower case. Only
15928 Acpi macros are upper case for differentiation.
15932 Changes to the external interfaces as described above.
15934 ----------------------------------------
15935 Summary of changes for this label: 08_31_01
15937 ACPI CA Core Subsystem:
15939 A bug with interpreter implementation of the ASL Divide operator
15940 was found and fixed. The implicit function return value (not the
15941 explicit store operands) was returning the remainder instead of
15942 the quotient. This was a longstanding bug and it fixes several
15943 known outstanding issues on various platforms.
15945 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
15946 been further optimized for size. There are 700 invocations of the
15947 DEBUG_PRINT macro alone, so each optimization reduces the size of
15948 the debug version of the subsystem significantly.
15950 A stack trace mechanism has been implemented. The maximum stack
15951 usage is about 2K on 32-bit platforms. The debugger command "stat
15952 stack" will display the current maximum stack usage.
15954 All public symbols and global variables within the subsystem are
15955 now prefixed with the string "Acpi". This keeps all of the
15956 symbols grouped together in a kernel map, and avoids conflicts
15957 with other kernel subsystems.
15959 Most of the internal fixed lookup tables have been moved into the
15960 code segment via the const operator.
15962 Several enhancements have been made to the interpreter to both
15963 reduce the code size and improve performance.
15965 Current core subsystem library code sizes are shown below. These
15966 are the code and data sizes for the acpica.lib produced by the
15967 Microsoft Visual C++ 6.0 compiler, and these values do not include
15968 any ACPI driver or OSPM code. The debug version of the code
15969 includes the full debug trace mechanism which contains over 700
15970 invocations of the DEBUG_PRINT macro, 500 function entry macro
15971 invocations, and over 900 function exit macro invocations --
15972 leading to a much larger code and data size. Note that these
15973 values will vary depending on the efficiency of the compiler and
15974 the compiler options used during generation.
15976 Non-Debug Version: 64K Code, 5K Data, 69K Total
15977 Debug Version: 137K Code, 58K Data, 195K Total
15981 Implemented wbinvd() macro, pending a kernel-wide definition.
15983 Fixed /proc/acpi/event to handle poll() and short reads.
15985 ASL Compiler, version X2026:
15987 Fixed a problem introduced in the previous label where the AML
15989 code emitted for package objects produced packages with zero
15992 ----------------------------------------
15993 Summary of changes for this label: 08_16_01
15995 ACPI CA Core Subsystem:
15997 The following ACPI 2.0 ASL operators have been implemented in the
15998 AML interpreter (These are already supported by the Intel ASL
15999 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16000 ToBuffer. Support for 64-bit AML constants is implemented in the
16001 AML parser, debugger, and disassembler.
16003 The internal memory tracking mechanism (leak detection code) has
16004 been upgraded to reduce the memory overhead (a separate tracking
16005 block is no longer allocated for each memory allocation), and now
16006 supports all of the internal object caches.
16008 The data structures and code for the internal object caches have
16009 been coelesced and optimized so that there is a single cache and
16010 memory list data structure and a single group of functions that
16011 implement generic cache management. This has reduced the code
16012 size in both the debug and release versions of the subsystem.
16014 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16015 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16016 different, because it generates a single call to an internal
16017 function. This results in a savings of about 90 bytes per
16018 invocation, resulting in an overall code and data savings of about
16019 16% in the debug version of the subsystem.
16023 Fixed C3 disk corruption problems and re-enabled C3 on supporting
16026 Integrated low-level sleep code by Patrick Mochel.
16028 Further tweaked source code Linuxization.
16034 Support for ACPI 2.0 variable length packages is fixed/completed.
16036 Fixed a problem where the optional length parameter for the ACPI
16037 2.0 ToString operator.
16039 Fixed multiple extraneous error messages when a syntax error is
16040 detected within the declaration line of a control method.
16042 ----------------------------------------
16043 Summary of changes for this label: 07_17_01
16045 ACPI CA Core Subsystem:
16047 Added a new interface named AcpiGetFirmwareTable to obtain any
16048 ACPI table via the ACPI signature. The interface can be called at
16049 any time during kernel initialization, even before the kernel
16050 virtual memory manager is initialized and paging is enabled. This
16051 allows kernel subsystems to obtain ACPI tables very early, even
16052 before the ACPI CA subsystem is initialized.
16054 Fixed a problem where Fields defined with the AnyAcc attribute
16055 could be resolved to the incorrect address under the following
16056 conditions: 1) the field width is larger than 8 bits and 2) the
16057 parent operation region is not defined on a DWORD boundary.
16059 Fixed a problem where the interpreter is not being locked during
16060 namespace initialization (during execution of the _INI control
16061 methods), causing an error when an attempt is made to release it
16064 ACPI 2.0 support in the AML Interpreter has begun and will be
16065 ongoing throughout the rest of this year. In this label, The Mod
16066 operator is implemented.
16068 Added a new data type to contain full PCI addresses named
16069 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16070 and Function values.
16074 Enhanced the Linux version of the source code to change most
16075 capitalized ACPI type names to lowercase. For example, all
16076 instances of ACPI_STATUS are changed to acpi_status. This will
16077 result in a large diff, but the change is strictly cosmetic and
16078 aligns the CA code closer to the Linux coding standard.
16082 The interfaces to the PCI configuration space have been changed to
16083 add the PCI Segment number and to split the single 32-bit combined
16084 DeviceFunction field into two 16-bit fields. This was
16085 accomplished by moving the four values that define an address in
16086 PCI configuration space (segment, bus, device, and function) to
16087 the new ACPI_PCI_ID structure.
16089 The changes to the PCI configuration space interfaces led to a
16090 reexamination of the complete set of address space access
16091 interfaces for PCI, I/O, and Memory. The previously existing 18
16092 interfaces have proven difficult to maintain (any small change
16093 must be propagated across at least 6 interfaces) and do not easily
16094 allow for future expansion to 64 bits if necessary. Also, on some
16095 systems, it would not be appropriate to demultiplex the access
16096 width (8, 16, 32,or 64) before calling the OSL if the
16097 corresponding native OS interfaces contain a similar access width
16098 parameter. For these reasons, the 18 address space interfaces
16099 have been replaced by these 6 new ones:
16101 AcpiOsReadPciConfiguration
16102 AcpiOsWritePciConfiguration
16108 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16109 to perform the platform and/or OS-specific actions necessary to
16110 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16111 interface will simply call down to the CA core to perform the low-
16112 memory search for the table. On IA-64, the RSDP is obtained from
16113 EFI. Migrating this interface to the OSL allows the CA core to
16115 remain OS and platform independent.
16117 Added a new interface named AcpiOsSignal to provide a generic
16118 "function code and pointer" interface for various miscellaneous
16119 signals and notifications that must be made to the host OS. The
16120 first such signals are intended to support the ASL Fatal and
16121 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16122 interface has been obsoleted.
16124 The definition of the AcpiFormatException interface has been
16125 changed to simplify its use. The caller no longer must supply a
16126 buffer to the call; A pointer to a const string is now returned
16127 directly. This allows the call to be easily used in printf
16128 statements, etc. since the caller does not have to manage a local
16132 ASL Compiler, Version X2025:
16134 The ACPI 2.0 Switch/Case/Default operators have been implemented
16135 and are fully functional. They will work with all ACPI 1.0
16136 interpreters, since the operators are simply translated to If/Else
16139 The ACPI 2.0 ElseIf operator is implemented and will also work
16140 with 1.0 interpreters, for the same reason.
16142 Implemented support for ACPI 2.0 variable-length packages. These
16143 packages have a separate opcode, and their size is determined by
16144 the interpreter at run-time.
16146 Documentation The ACPI CA Programmer Reference has been updated to
16147 reflect the new interfaces and changes to existing interfaces.
16149 ------------------------------------------
16150 Summary of changes for this label: 06_15_01
16152 ACPI CA Core Subsystem:
16154 Fixed a problem where a DWORD-accessed field within a Buffer
16155 object would get its byte address inadvertently rounded down to
16156 the nearest DWORD. Buffers are always Byte-accessible.
16158 ASL Compiler, version X2024:
16160 Fixed a problem where the Switch() operator would either fault or
16161 hang the compiler. Note however, that the AML code for this ACPI
16162 2.0 operator is not yet implemented.
16164 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16167 Implementation of the CreateField operator automatically converts
16168 a reference to a named field within a resource descriptor from a
16169 byte offset to a bit offset if required.
16171 Added some missing named fields from the resource descriptor
16172 support. These are the names that are automatically created by the
16173 compiler to reference fields within a descriptor. They are only
16174 valid at compile time and are not passed through to the AML
16177 Resource descriptor named fields are now typed as Integers and
16178 subject to compile-time typechecking when used in expressions.
16180 ------------------------------------------
16181 Summary of changes for this label: 05_18_01
16183 ACPI CA Core Subsystem:
16185 Fixed a couple of problems in the Field support code where bits
16186 from adjacent fields could be returned along with the proper field
16187 bits. Restructured the field support code to improve performance,
16188 readability and maintainability.
16190 New DEBUG_PRINTP macro automatically inserts the procedure name
16191 into the output, saving hundreds of copies of procedure name
16192 strings within the source, shrinking the memory footprint of the
16193 debug version of the core subsystem.
16195 Source Code Structure:
16197 The source code directory tree was restructured to reflect the
16198 current organization of the component architecture. Some files
16199 and directories have been moved and/or renamed.
16203 Fixed leaking kacpidpc processes.
16205 Fixed queueing event data even when /proc/acpi/event is not
16208 ASL Compiler, version X2020:
16210 Memory allocation performance enhancement - over 24X compile time
16211 improvement on large ASL files. Parse nodes and namestring
16212 buffers are now allocated from a large internal compiler buffer.
16214 The temporary .SRC file is deleted unless the "-s" option is
16217 The "-d" debug output option now sends all output to the .DBG file
16218 instead of the console.
16220 "External" second parameter is now optional
16222 "ElseIf" syntax now properly allows the predicate
16224 Last operand to "Load" now recognized as a Target operand
16226 Debug object can now be used anywhere as a normal object.
16228 ResourceTemplate now returns an object of type BUFFER
16230 EISAID now returns an object of type INTEGER
16232 "Index" now works with a STRING operand
16234 "LoadTable" now accepts optional parameters
16236 "ToString" length parameter is now optional
16238 "Interrupt (ResourceType," parse error fixed.
16240 "Register" with a user-defined region space parse error fixed
16242 Escaped backslash at the end of a string ("\\") scan/parse error
16245 "Revision" is now an object of type INTEGER.
16249 ------------------------------------------
16250 Summary of changes for this label: 05_02_01
16254 /proc/acpi/event now blocks properly.
16256 Removed /proc/sys/acpi. You can still dump your DSDT from
16259 ACPI CA Core Subsystem:
16261 Fixed a problem introduced in the previous label where some of the
16262 "small" resource descriptor types were not recognized.
16264 Improved error messages for the case where an ASL Field is outside
16265 the range of the parent operation region.
16267 ASL Compiler, version X2018:
16270 Added error detection for ASL Fields that extend beyond the length
16271 of the parent operation region (only if the length of the region
16272 is known at compile time.) This includes fields that have a
16273 minimum access width that is smaller than the parent region, and
16274 individual field units that are partially or entirely beyond the
16275 extent of the parent.
16279 ------------------------------------------
16280 Summary of changes for this label: 04_27_01
16282 ACPI CA Core Subsystem:
16284 Fixed a problem where the namespace mutex could be released at the
16285 wrong time during execution of AcpiRemoveAddressSpaceHandler.
16287 Added optional thread ID output for debug traces, to simplify
16288 debugging of multiple threads. Added context switch notification
16289 when the debug code realizes that a different thread is now
16290 executing ACPI code.
16292 Some additional external data types have been prefixed with the
16293 string "ACPI_" for consistency. This may effect existing code.
16294 The data types affected are the external callback typedefs - e.g.,
16296 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
16300 Fixed an issue with the OSL semaphore implementation where a
16301 thread was waking up with an error from receiving a SIGCHLD
16304 Linux version of ACPI CA now uses the system C library for string
16305 manipulation routines instead of a local implementation.
16307 Cleaned up comments and removed TBDs.
16309 ASL Compiler, version X2017:
16311 Enhanced error detection and reporting for all file I/O
16316 Programmer Reference updated to version 1.06.
16320 ------------------------------------------
16321 Summary of changes for this label: 04_13_01
16323 ACPI CA Core Subsystem:
16325 Restructured support for BufferFields and RegionFields.
16326 BankFields support is now fully operational. All known 32-bit
16327 limitations on field sizes have been removed. Both BufferFields
16328 and (Operation) RegionFields are now supported by the same field
16331 Resource support now supports QWORD address and IO resources. The
16332 16/32/64 bit address structures and the Extended IRQ structure
16333 have been changed to properly handle Source Resource strings.
16335 A ThreadId of -1 is now used to indicate a "mutex not acquired"
16336 condition internally and must never be returned by AcpiOsThreadId.
16337 This reserved value was changed from 0 since Unix systems allow a
16342 Driver code reorganized to enhance portability
16344 Added a kernel configuration option to control ACPI_DEBUG
16346 Fixed the EC driver to honor _GLK.
16348 ASL Compiler, version X2016:
16350 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
16351 address space was set to 0, not 0x7f as it should be.
16353 ------------------------------------------
16354 Summary of changes for this label: 03_13_01
16356 ACPI CA Core Subsystem:
16358 During ACPI initialization, the _SB_._INI method is now run if
16361 Notify handler fix - notifies are deferred until the parent method
16362 completes execution. This fixes the "mutex already acquired"
16363 issue seen occasionally.
16365 Part of the "implicit conversion" rules in ACPI 2.0 have been
16366 found to cause compatibility problems with existing ASL/AML. The
16367 convert "result-to-target-type" implementation has been removed
16368 for stores to method Args and Locals. Source operand conversion
16369 is still fully implemented. Possible changes to ACPI 2.0
16370 specification pending.
16372 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
16375 Fix for compiler warnings for 64-bit compiles.
16379 /proc output aligned for easier parsing.
16381 Release-version compile problem fixed.
16383 New kernel configuration options documented in Configure.help.
16385 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
16390 Power resource driver integrated with bus manager.
16392 Fixed kernel fault during active cooling for thermal zones.
16396 The source code tree has been restructured.
16400 ------------------------------------------
16401 Summary of changes for this label: 03_02_01
16403 Linux OS Services Layer (OSL):
16405 Major revision of all Linux-specific code.
16407 Modularized all ACPI-specific drivers.
16409 Added new thermal zone and power resource drivers.
16411 Revamped /proc interface (new functionality is under /proc/acpi).
16413 New kernel configuration options.
16415 Linux known issues:
16417 New kernel configuration options not documented in Configure.help
16421 Module dependencies not currently implemented. If used, they
16422 should be loaded in this order: busmgr, power, ec, system,
16423 processor, battery, ac_adapter, button, thermal.
16425 Modules will not load if CONFIG_MODVERSION is set.
16427 IBM 600E - entering S5 may reboot instead of shutting down.
16429 IBM 600E - Sleep button may generate "Invalid <NULL> context"
16432 Some systems may fail with "execution mutex already acquired"
16435 ACPI CA Core Subsystem:
16437 Added a new OSL Interface, AcpiOsGetThreadId. This was required
16438 for the deadlock detection code. Defined to return a non-zero, 32-
16439 bit thread ID for the currently executing thread. May be a non-
16440 zero constant integer on single-thread systems.
16442 Implemented deadlock detection for internal subsystem mutexes. We
16443 may add conditional compilation for this code (debug only) later.
16445 ASL/AML Mutex object semantics are now fully supported. This
16446 includes multiple acquires/releases by owner and support for the
16448 Mutex SyncLevel parameter.
16450 A new "Force Release" mechanism automatically frees all ASL
16451 Mutexes that have been acquired but not released when a thread
16452 exits the interpreter. This forces conformance to the ACPI spec
16453 ("All mutexes must be released when an invocation exits") and
16454 prevents deadlocked ASL threads. This mechanism can be expanded
16455 (later) to monitor other resource acquisitions if OEM ASL code
16456 continues to misbehave (which it will).
16458 Several new ACPI exception codes have been added for the Mutex
16461 Recursive method calls are now allowed and supported (the ACPI
16462 spec does in fact allow recursive method calls.) The number of
16463 recursive calls is subject to the restrictions imposed by the
16464 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
16467 Implemented support for the SyncLevel parameter for control
16468 methods (ACPI 2.0 feature)
16470 Fixed a deadlock problem when multiple threads attempted to use
16473 Fixed a problem where the string length of a String package
16474 element was not always set in a package returned from
16475 AcpiEvaluateObject.
16477 Fixed a problem where the length of a String package element was
16478 not always included in the length of the overall package returned
16479 from AcpiEvaluateObject.
16481 Added external interfaces (Acpi*) to the ACPI debug memory
16482 manager. This manager keeps a list of all outstanding
16483 allocations, and can therefore detect memory leaks and attempts to
16484 free memory blocks more than once. Useful for code such as the
16485 power manager, etc. May not be appropriate for device drivers.
16486 Performance with the debug code enabled is slow.
16488 The ACPI Global Lock is now an optional hardware element.
16490 ASL Compiler Version X2015:
16492 Integrated changes to allow the compiler to be generated on
16493 multiple platforms.
16495 Linux makefile added to generate the compiler on Linux
16499 All platform-specific headers have been moved to their own
16500 subdirectory, Include/Platform.
16502 New source file added, Interpreter/ammutex.c
16504 New header file, Include/acstruct.h
16508 The programmer reference has been updated for the following new
16509 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
16511 ------------------------------------------
16512 Summary of changes for this label: 02_08_01
16514 Core ACPI CA Subsystem: Fixed a problem where an error was
16515 incorrectly returned if the return resource buffer was larger than
16516 the actual data (in the resource interfaces).
16518 References to named objects within packages are resolved to the
16520 full pathname string before packages are returned directly (via
16521 the AcpiEvaluateObject interface) or indirectly via the resource
16524 Linux OS Services Layer (OSL):
16526 Improved /proc battery interface.
16529 Added C-state debugging output and other miscellaneous fixes.
16531 ASL Compiler Version X2014:
16533 All defined method arguments can now be used as local variables,
16534 including the ones that are not actually passed in as parameters.
16535 The compiler tracks initialization of the arguments and issues an
16536 exception if they are used without prior assignment (just like
16539 The -o option now specifies a filename prefix that is used for all
16540 output files, including the AML output file. Otherwise, the
16541 default behavior is as follows: 1) the AML goes to the file
16542 specified in the DSDT. 2) all other output files use the input
16543 source filename as the base.
16545 ------------------------------------------
16546 Summary of changes for this label: 01_25_01
16548 Core ACPI CA Subsystem: Restructured the implementation of object
16549 store support within the interpreter. This includes support for
16550 the Store operator as well as any ASL operators that include a
16553 Partially implemented support for Implicit Result-to-Target
16554 conversion. This is when a result object is converted on the fly
16555 to the type of an existing target object. Completion of this
16556 support is pending further analysis of the ACPI specification
16557 concerning this matter.
16559 CPU-specific code has been removed from the subsystem (hardware
16562 New Power Management Timer functions added
16564 Linux OS Services Layer (OSL): Moved system state transition code
16565 to the core, fixed it, and modified Linux OSL accordingly.
16567 Fixed C2 and C3 latency calculations.
16570 We no longer use the compilation date for the version message on
16571 initialization, but retrieve the version from AcpiGetSystemInfo().
16573 Incorporated for fix Sony VAIO machines.
16575 Documentation: The Programmer Reference has been updated and
16579 ASL Compiler: Version X2013: Fixed a problem where the line
16580 numbering and error reporting could get out of sync in the
16581 presence of multiple include files.
16583 ------------------------------------------
16584 Summary of changes for this label: 01_15_01
16586 Core ACPI CA Subsystem:
16588 Implemented support for type conversions in the execution of the
16589 ASL Concatenate operator (The second operand is converted to
16590 match the type of the first operand before concatenation.)
16592 Support for implicit source operand conversion is partially
16593 implemented. The ASL source operand types Integer, Buffer, and
16594 String are freely interchangeable for most ASL operators and are
16595 converted by the interpreter on the fly as required. Implicit
16596 Target operand conversion (where the result is converted to the
16597 target type before storing) is not yet implemented.
16599 Support for 32-bit and 64-bit BCD integers is implemented.
16601 Problem fixed where a field read on an aligned field could cause a
16602 read past the end of the field.
16604 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
16605 does not return a value, but the caller expects one. (The ASL
16606 compiler flags this as a warning.)
16611 1. Static typechecking of all operands is implemented. This
16612 prevents the use of invalid objects (such as using a Package where
16613 an Integer is required) at compile time instead of at interpreter
16615 2. The ASL source line is printed with ALL errors and warnings.
16616 3. Bug fix for source EOF without final linefeed.
16617 4. Debug option is split into a parse trace and a namespace trace.
16618 5. Namespace output option (-n) includes initial values for
16619 integers and strings.
16620 6. Parse-only option added for quick syntax checking.
16621 7. Compiler checks for duplicate ACPI name declarations
16624 1. Relaxed typechecking to allow interchangeability between
16625 strings, integers, and buffers. These types are now converted by
16626 the interpreter at runtime.
16627 2. Compiler reports time taken by each internal subsystem in the
16631 ------------------------------------------
16632 Summary of changes for this label: 12_14_00
16636 This is the first official release of the compiler. Since the
16637 compiler requires elements of the Core Subsystem, this label
16638 synchronizes everything.
16640 ------------------------------------------
16641 Summary of changes for this label: 12_08_00
16644 Fixed a problem where named references within the ASL definition
16645 of both OperationRegions and CreateXXXFields did not work
16646 properly. The symptom was an AE_AML_OPERAND_TYPE during
16647 initialization of the region/field. This is similar (but not
16648 related internally) to the problem that was fixed in the last
16651 Implemented both 32-bit and 64-bit support for the BCD ASL
16652 functions ToBCD and FromBCD.
16654 Updated all legal headers to include "2000" in the copyright
16657 ------------------------------------------
16658 Summary of changes for this label: 12_01_00
16660 Fixed a problem where method invocations within the ASL definition
16661 of both OperationRegions and CreateXXXFields did not work
16662 properly. The symptom was an AE_AML_OPERAND_TYPE during
16663 initialization of the region/field:
16665 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
16666 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
16669 Fixed a problem where operators with more than one nested
16670 subexpression would fail. The symptoms were varied, by mostly
16671 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
16672 problem that has gone unnoticed until now.
16674 Subtract (Add (1,2), Multiply (3,4))
16676 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
16677 previous build (The prefix part of a relative path was handled
16680 Fixed a problem where Operation Region initialization failed if
16681 the operation region name was a "namepath" instead of a simple
16682 "nameseg". Symptom was an AE_NO_OPERAND error.
16684 Fixed a problem where an assignment to a local variable via the
16685 indirect RefOf mechanism only worked for the first such
16686 assignment. Subsequent assignments were ignored.
16688 ------------------------------------------
16689 Summary of changes for this label: 11_15_00
16691 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
16692 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
16693 the AML interpreter does NOT have support for the new 2.0 ASL
16694 grammar terms at this time.
16696 All ACPI hardware access is via the GAS structures in the ACPI 2.0
16699 All physical memory addresses across all platforms are now 64 bits
16700 wide. Logical address width remains dependent on the platform
16703 AcpiOsMapMemory interface changed to a 64-bit physical address.
16705 The AML interpreter integer size is now 64 bits, as per the ACPI
16708 For backwards compatibility with ACPI 1.0, ACPI tables with a
16709 revision number less than 2 use 32-bit integers only.
16711 Fixed a problem where the evaluation of OpRegion operands did not
16712 always resolve them to numbers properly.
16714 ------------------------------------------
16715 Summary of changes for this label: 10_20_00
16717 Fix for CBN_._STA issue. This fix will allow correct access to
16718 CBN_ OpRegions when the _STA returns 0x8.
16720 Support to convert ACPI constants (Ones, Zeros, One) to actual
16721 values before a package object is returned
16723 Fix for method call as predicate to if/while construct causing
16724 incorrect if/while behavior
16726 Fix for Else block package lengths sometimes calculated wrong (if
16729 Fix for Processor object length field, was always zero
16731 Table load abort if FACP sanity check fails
16733 Fix for problem with Scope(name) if name already exists
16735 Warning emitted if a named object referenced cannot be found
16736 (resolved) during method execution.
16742 ------------------------------------------
16743 Summary of changes for this label: 9_29_00
16745 New table initialization interfaces: AcpiInitializeSubsystem no
16746 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
16747 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
16748 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
16751 Note: These interface changes require changes to all existing OSDs
16753 The PCI_Config default address space handler is always installed
16754 at the root namespace object.
16756 -------------------------------------------
16757 Summary of changes for this label: 09_15_00
16759 The new initialization architecture is implemented. New
16760 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
16761 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
16763 (Namespace is automatically loaded when a table is loaded)
16765 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
16766 52 bytes to 32 bytes. There is usually one of these for every
16767 namespace object, so the memory savings is significant.
16769 Implemented just-in-time evaluation of the CreateField operators.
16771 Bug fixes for IA-64 support have been integrated.
16773 Additional code review comments have been implemented
16775 The so-called "third pass parse" has been replaced by a final walk
16776 through the namespace to initialize all operation regions (address
16777 spaces) and fields that have not yet been initialized during the
16778 execution of the various _INI and REG methods.
16780 New file - namespace/nsinit.c
16782 -------------------------------------------
16783 Summary of changes for this label: 09_01_00
16785 Namespace manager data structures have been reworked to change the
16786 primary object from a table to a single object. This has
16787 resulted in dynamic memory savings of 3X within the namespace and
16788 2X overall in the ACPI CA subsystem.
16790 Fixed problem where the call to AcpiEvFindPciRootBuses was
16791 inadvertently left commented out.
16793 Reduced the warning count when generating the source with the GCC
16796 Revision numbers added to each module header showing the
16797 SourceSafe version of the file. Please refer to this version
16798 number when giving us feedback or comments on individual modules.
16800 The main object types within the subsystem have been renamed to
16801 clarify their purpose:
16803 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
16804 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
16805 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
16807 NOTE: no changes to the initialization sequence are included in
16810 -------------------------------------------
16811 Summary of changes for this label: 08_23_00
16813 Fixed problem where TerminateControlMethod was being called
16814 multiple times per method
16816 Fixed debugger problem where single stepping caused a semaphore to
16819 Improved performance through additional parse object caching -
16820 added ACPI_EXTENDED_OP type
16822 -------------------------------------------
16823 Summary of changes for this label: 08_10_00
16825 Parser/Interpreter integration: Eliminated the creation of
16826 complete parse trees for ACPI tables and control methods.
16827 Instead, parse subtrees are created and then deleted as soon as
16828 they are processed (Either entered into the namespace or executed
16829 by the interpreter). This reduces the use of dynamic kernel
16830 memory significantly. (about 10X)
16832 Exception codes broken into classes and renumbered. Be sure to
16833 recompile all code that includes acexcep.h. Hopefully we won't
16834 have to renumber the codes again now that they are split into
16835 classes (environment, programmer, AML code, ACPI table, and
16838 Fixed some additional alignment issues in the Resource Manager
16841 Implemented semaphore tracking in the AcpiExec utility, and fixed
16842 several places where mutexes/semaphores were being unlocked
16843 without a corresponding lock operation. There are no known
16844 semaphore or mutex "leaks" at this time.
16846 Fixed the case where an ASL Return operator is used to return an
16849 -------------------------------------------
16850 Summary of changes for this label: 07_28_00
16852 Fixed a problem with the way addresses were calculated in
16853 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
16854 manifested itself when a Field was created with WordAccess or
16855 DwordAccess, but the field unit defined within the Field was less
16857 than a Word or Dword.
16859 Fixed a problem in AmlDumpOperands() module's loop to pull
16860 operands off of the operand stack to display information. The
16861 problem manifested itself as a TLB error on 64-bit systems when
16862 accessing an operand stack with two or more operands.
16864 Fixed a problem with the PCI configuration space handlers where
16865 context was getting confused between accesses. This required a
16866 change to the generic address space handler and address space
16867 setup definitions. Handlers now get both a global handler context
16868 (this is the one passed in by the user when executing
16869 AcpiInstallAddressSpaceHandler() and a specific region context
16870 that is unique to each region (For example, the _ADR, _SEG and
16871 _BBN values associated with a specific region). The generic
16872 function definitions have changed to the following:
16874 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
16875 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
16876 *HandlerContext, // This used to be void *Context void
16877 *RegionContext); // This is an additional parameter
16879 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
16880 RegionHandle, UINT32 Function, void *HandlerContext, void
16881 **RegionContext); // This used to be **ReturnContext
16883 -------------------------------------------
16884 Summary of changes for this label: 07_21_00
16886 Major file consolidation and rename. All files within the
16887 interpreter have been renamed as well as most header files. This
16888 was done to prevent collisions with existing files in the host
16889 OSs -- filenames such as "config.h" and "global.h" seem to be
16890 quite common. The VC project files have been updated. All
16891 makefiles will require modification.
16893 The parser/interpreter integration continues in Phase 5 with the
16894 implementation of a complete 2-pass parse (the AML is parsed
16895 twice) for each table; This avoids the construction of a huge
16896 parse tree and therefore reduces the amount of dynamic memory
16897 required by the subsystem. Greater use of the parse object cache
16898 means that performance is unaffected.
16900 Many comments from the two code reviews have been rolled in.
16902 The 64-bit alignment support is complete.
16904 -------------------------------------------
16905 Summary of changes for this label: 06_30_00
16907 With a nod and a tip of the hat to the technology of yesteryear,
16908 we've added support in the source code for 80 column output
16909 devices. The code is now mostly constrained to 80 columns or
16910 less to support environments and editors that 1) cannot display
16911 or print more than 80 characters on a single line, and 2) cannot
16912 disable line wrapping.
16914 A major restructuring of the namespace data structure has been
16915 completed. The result is 1) cleaner and more
16916 understandable/maintainable code, and 2) a significant reduction
16917 in the dynamic memory requirement for each named ACPI object
16920 -------------------------------------------
16921 Summary of changes for this label: 06_23_00
16923 Linux support has been added. In order to obtain approval to get
16924 the ACPI CA subsystem into the Linux kernel, we've had to make
16925 quite a few changes to the base subsystem that will affect all
16926 users (all the changes are generic and OS- independent). The
16927 effects of these global changes have been somewhat far reaching.
16928 Files have been merged and/or renamed and interfaces have been
16929 renamed. The major changes are described below.
16931 Osd* interfaces renamed to AcpiOs* to eliminate namespace
16932 pollution/confusion within our target kernels. All OSD
16933 interfaces must be modified to match the new naming convention.
16935 Files merged across the subsystem. A number of the smaller source
16936 and header files have been merged to reduce the file count and
16937 increase the density of the existing files. There are too many
16938 to list here. In general, makefiles that call out individual
16939 files will require rebuilding.
16941 Interpreter files renamed. All interpreter files now have the
16942 prefix am* instead of ie* and is*.
16944 Header files renamed: The acapi.h file is now acpixf.h. The
16945 acpiosd.h file is now acpiosxf.h. We are removing references to
16946 the acronym "API" since it is somewhat windowsy. The new name is
16947 "external interface" or xface or xf in the filenames.j
16950 All manifest constants have been forced to upper case (some were
16951 mixed case.) Also, the string "ACPI_" has been prepended to many
16952 (not all) of the constants, typedefs, and structs.
16954 The globals "DebugLevel" and "DebugLayer" have been renamed
16955 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
16957 All other globals within the subsystem are now prefixed with
16958 "AcpiGbl_" Internal procedures within the subsystem are now
16959 prefixed with "Acpi" (with only a few exceptions). The original
16960 two-letter abbreviation for the subcomponent remains after "Acpi"
16961 - for example, CmCallocate became AcpiCmCallocate.
16963 Added a source code translation/conversion utility. Used to
16964 generate the Linux source code, it can be modified to generate
16965 other types of source as well. Can also be used to cleanup
16966 existing source by removing extraneous spaces and blank lines.
16967 Found in tools/acpisrc/*
16969 OsdUnMapMemory was renamed to OsdUnmapMemory and then
16970 AcpiOsUnmapMemory. (UnMap became Unmap).
16972 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
16973 When set to one, this indicates that the caller wants to use the
16975 semaphore as a mutex, not a counting semaphore. ACPI CA uses
16976 both types. However, implementers of this call may want to use
16977 different OS primitives depending on the type of semaphore
16978 requested. For example, some operating systems provide separate
16980 "mutex" and "semaphore" interfaces - where the mutex interface is
16981 much faster because it doesn't have all the overhead of a full
16982 semaphore implementation.
16984 Fixed a deadlock problem where a method that accesses the PCI
16985 address space can block forever if it is the first access to the
16988 -------------------------------------------
16989 Summary of changes for this label: 06_02_00
16991 Support for environments that cannot handle unaligned data
16992 accesses (e.g. firmware and OS environments devoid of alignment
16993 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
16994 been added (via configurable macros) in these three areas: -
16995 Transfer of data from the raw AML byte stream is done via byte
16996 moves instead of word/dword/qword moves. - External objects are
16997 aligned within the user buffer, including package elements (sub-
16998 objects). - Conversion of name strings to UINT32 Acpi Names is now
17001 The Store operator was modified to mimic Microsoft's
17002 implementation when storing to a Buffer Field.
17004 Added a check of the BM_STS bit before entering C3.
17006 The methods subdirectory has been obsoleted and removed. A new
17007 file, cmeval.c subsumes the functionality.
17009 A 16-bit (DOS) version of AcpiExec has been developed. The
17010 makefile is under the acpiexec directory.