1 ----------------------------------------
2 30 September 2016. Summary of changes for version 20160930:
5 1) ACPICA kernel-resident subsystem:
7 Fixed a regression in the internal AcpiTbFindTable function where a non
8 AE_OK exception could inadvertently be returned even if the function did
9 not fail. This problem affects the following operators:
13 Fixed a regression in the LoadTable operator where a load to any
14 namespace location other than the root no longer worked properly.
16 Increased the maximum loop count value that will result in the
17 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
18 prevent infinite loops within the AML interpreter and thus the host OS
19 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
22 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
23 acpixf.h file. This allows hosts to easily configure the maximum loop
26 Removed an illegal character in the strtoul64.c file. This character
27 caused errors with some C compilers.
29 Example Code and Data Size: These are the sizes for the OS-independent
30 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
31 debug version of the code includes the debug output trace mechanism and
32 has a much larger code and data size.
35 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
36 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
38 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
39 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
42 2) iASL Compiler/Disassembler and Tools:
44 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
45 the simpler ASL ElseIf keyword. During the conversion, a trailing If
46 block could be lost and missing from the disassembled output.
48 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
49 the missing rule caused a parse error when using the Index operator as an
50 operand to ObjectType. This construct now compiles properly. Example:
53 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
54 option). Previously, unresolved symbols could cause a protection fault.
55 Such symbols are now marked as unresolved in the map file.
57 iASL: Implemented support to allow control method invocations as an
58 operand to the ASL DeRefOf operator. Example:
61 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
62 possible _PLD buffer now includes examination of both the normal buffer
63 length (16 or 20) as well as the surrounding AML package length.
65 Disassembler: Fixed a problem with the decoding of complex expressions
66 within the Divide operator for ASL+. For the case where both the quotient
67 and remainder targets are specified, the entire statement cannot be
68 disassembled. Previously, the output incorrectly contained a mix of ASL-
69 and ASL+ operators. This mixed statement causes a syntax error when
71 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
73 Divide (INT1 + 6, 128, RSLT, QUOT)
75 iASL/Tools: Added support to process AML and non-AML ACPI tables
76 consistently. For the disassembler and AcpiExec, allow all types of ACPI
77 tables (AML and data tables). For the iASL -e option, allow only AML
80 ----------------------------------------
81 31 August 2016. Summary of changes for version 20160831:
84 1) ACPICA kernel-resident subsystem:
86 Improve support for the so-called "module-level code", which is defined
87 to be math, logical and control AML opcodes that appear outside of any
88 control method. This change improves the support by adding more opcodes
89 that can be executed in the manner. Some other issues have been solved,
90 and the ASL grammar changes to support such code under all scope
91 operators (Device, etc.) are complete. Lv Zheng.
93 UEFI support: these OSL functions have been implemented. This is an
94 additional step toward supporting the AcpiExec utility natively (with
95 full hardware access) under UEFI. Marcelo Ferreira.
96 AcpiOsReadPciConfiguration
97 AcpiOsWritePciConfiguration
99 Fixed a possible mutex error during control method auto-serialization. Lv
102 Updated support for the Generic Address Structure by fully implementing
103 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
106 Updated the return value for the internal _OSI method. Instead of
107 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
108 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
109 implementations, and will be reflected and clarified in the next version
110 of the ACPI specification.
112 Implemented two new table events that can be passed to an ACPICA table
113 handler. These events are used to indicate a table installation or
114 uninstallation. These events are used in addition to existed table load
115 and unload events. Lv Zheng.
117 Implemented a cleanup for all internal string-to-integer conversions.
118 Consolidate multiple versions of this functionality and limit possible
119 bases to either 10 or 16 to simplify the code. Adds a new file,
122 Cleanup the inclusion order of the various compiler-specific headers.
123 This simplifies build configuration management. The compiler-specific
124 headers are now split out from the host-specific headers. Lv Zheng.
126 Example Code and Data Size: These are the sizes for the OS-independent
127 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
128 debug version of the code includes the debug output trace mechanism and
129 has a much larger code and data size.
132 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
133 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
136 2) iASL Compiler/Disassembler and Tools:
138 iASL/AcpiExec: Added a command line option to display the build date/time
139 of the tool (-vd). This can be useful to verify that the correct version
140 of the tools are being used.
142 AML Debugger: Implemented a new subcommand ("execute predef") to execute
143 all predefined control methods and names within the current namespace.
144 This can be useful for debugging problems with ACPI tables and the ACPI
147 ----------------------------------------
148 29 July 2016. Summary of changes for version 20160729:
151 1) ACPICA kernel-resident subsystem:
153 Implemented basic UEFI support for the various ACPICA tools. This
155 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
156 2) Support to obtain the ACPI tables on UEFI.
157 3) Local implementation of required C library functions not available on
159 4) A front-end (main) function for the tools for UEFI-related
162 The initial deployment of this support is the AcpiDump utility executing
163 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
164 Current environments supported are Linux/Unix. MSVC generation is not
165 supported at this time. See the generate/efi/README file for build
166 instructions. Lv Zheng.
168 Future plans include porting the AcpiExec utility to execute natively on
169 the platform with I/O and memory access. This will allow viewing/dump of
170 the platform namespace and native execution of ACPI control methods that
171 access the actual hardware. To fully implement this support, the OSL
172 functions below must be implemented with UEFI interfaces. Any community
173 help in the implementation of these functions would be appreciated:
178 AcpiOsReadPciConfiguration
179 AcpiOsWritePciConfiguration
181 Restructured and standardized the C library configuration for ACPICA,
182 resulting in the various configuration options below. This includes a
183 global restructuring of the compiler-dependent and platform-dependent
184 include files. These changes may affect the existing platform-dependent
185 configuration files on some hosts. Lv Zheng.
187 The current C library configuration options appear below. For any issues,
188 it may be helpful to examine the existing compiler-dependent and
189 platform-dependent files as examples. Lv Zheng.
192 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
194 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
195 2) Unix/Windows/BSD applications:
196 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
198 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
199 3) UEFI applications:
200 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
202 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
203 4) UEFI applications (EDK2/StdLib):
204 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
205 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
208 AML interpreter: "module-level code" support. Allows for execution of so-
209 called "executable" AML code (math/logical operations, etc.) outside of
210 control methods not just at the module level (top level) but also within
211 any scope declared outside of a control method - Scope{}, Device{},
212 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
214 Simplified the configuration of the "maximum AML loops" global option by
215 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
219 Example Code and Data Size: These are the sizes for the OS-independent
220 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
221 debug version of the code includes the debug output trace mechanism and
222 has a much larger code and data size.
225 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
226 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
229 2) iASL Compiler/Disassembler and Tools:
231 iASL: Add full support for the RASF ACPI table (RAS Features Table).
232 Includes disassembler, data table compiler, and header support.
234 iASL Expand "module-level code" support. Allows for
235 compilation/disassembly of so-called "executable" AML code (math/logical
236 operations, etc.) outside of control methods not just at the module level
237 (top level) but also within any scope declared outside of a control
238 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
241 AcpiDump: Added support for dumping all SSDTs on newer versions of
242 Windows. These tables are now easily available -- SSDTs are not available
243 through the registry on older versions.
245 ----------------------------------------
246 27 May 2016. Summary of changes for version 20160527:
249 1) ACPICA kernel-resident subsystem:
251 Temporarily reverted the new arbitrary bit length/alignment support in
252 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
253 a number of regressions with the new code that need to be fully resolved
254 and tested before this support can be finally integrated into ACPICA.
255 Apologies for any inconveniences these issues may have caused.
257 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
258 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
259 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
261 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
262 option. Adds a new return macro, return_STR. Junk-uk Kim.
264 Example Code and Data Size: These are the sizes for the OS-independent
265 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
266 debug version of the code includes the debug output trace mechanism and
267 has a much larger code and data size.
270 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
271 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
273 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
274 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
276 ----------------------------------------
277 22 April 2016. Summary of changes for version 20160422:
279 1) ACPICA kernel-resident subsystem:
281 Fixed a regression in the GAS (generic address structure) arbitrary bit
282 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
283 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
285 ACPI 6.0: Added support for new/renamed resource macros. One new argument
286 was added to each of these macros, and the original name has been
287 deprecated. The AML disassembler will always disassemble to the new
288 names. Support for the new macros was added to iASL, disassembler,
289 resource manager, and the acpihelp utility. ACPICA BZ 1274.
291 I2cSerialBus -> I2cSerialBusV2
292 SpiSerialBus -> SpiSerialBusV2
293 UartSerialBus -> UartSerialBusV2
295 ACPI 6.0: Added support for a new integer field that was appended to the
296 package object returned by the _BIX method. This adds iASL compile-time
297 and AML runtime error checking. ACPICA BZ 1273.
299 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
300 Subspace Type2" (Headers, Disassembler, and data table compiler).
302 Example Code and Data Size: These are the sizes for the OS-independent
303 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
304 debug version of the code includes the debug output trace mechanism and
305 has a much larger code and data size.
308 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
309 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
311 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
312 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
315 2) iASL Compiler/Disassembler and Tools:
317 iASL: Implemented an ASL grammar extension to allow/enable executable
318 "module-level code" to be created and executed under the various
319 operators that create new scopes. This type of AML code is already
320 supported in all known AML interpreters, and the grammar change will
321 appear in the next version of the ACPI specification. Simplifies the
322 conditional runtime creation of named objects under these object types:
330 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
331 ease-of-use to the ASL language. The syntax is similar to the
332 corresponding C operator, and is implemented with the existing AML While
333 opcode -- thus requiring no changes to existing AML interpreters.
335 For (Initialize, Predicate, Update) {TermList}
340 Initializer // Nothing | TermArg => ComputationalData
341 Predicate // Nothing | TermArg => ComputationalData
342 Update // Nothing | TermArg => ComputationalData
346 iASL: The _HID/_ADR detection and validation has been enhanced to search
347 under conditionals in order to allow these objects to be conditionally
350 iASL: Fixed several issues with the constant folding feature. The
351 improvement allows better detection and resolution of statements that can
352 be folded at compile time. ACPICA BZ 1266.
354 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
355 conversion to the ASL ElseIf operator where incorrect ASL code could be
358 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
359 sometimes an extra (and extraneous) set of parentheses were emitted for
360 some combinations of operators. Although this did not cause any problems
361 with recompilation of the disassembled code, it made the code more
362 difficult to read. David Box. ACPICA BZ 1231.
364 iASL: Changed to ignore the unreferenced detection for predefined names
365 of resource descriptor elements, when the resource descriptor is
366 created/defined within a control method.
368 iASL: Disassembler: Fix a possible fault with externally declared Buffer
371 ----------------------------------------
372 18 March 2016. Summary of changes for version 20160318:
374 1) ACPICA kernel-resident subsystem:
376 Added support for arbitrary bit lengths and bit offsets for registers
377 defined by the Generic Address Structure. Previously, only aligned bit
378 lengths of 8/16/32/64 were supported. This was sufficient for many years,
379 but recently some machines have been seen that require arbitrary bit-
380 level support. ACPICA BZ 1240. Lv Zheng.
382 Fixed an issue where the \_SB._INI method sometimes must be evaluated
383 before any _REG methods are evaluated. Lv Zheng.
385 Implemented several changes related to ACPI table support
386 (Headers/Disassembler/TableCompiler):
387 NFIT: For ACPI 6.1, updated to add some additional new fields and
389 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
391 DMAR: Added new constants per the 10/2014 DMAR spec.
392 IORT: Added new subtable per the 10/2015 IORT spec.
393 HEST: For ACPI 6.1, added new constants and new subtable.
394 DBG2: Added new constants per the 12/2015 DBG2 spec.
395 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
397 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
399 Updated header support for the DMAR table to match the current version of
402 Added extensions to the ASL Concatenate operator to allow any ACPI object
403 to be passed as an operand. Any object other than Integer/String/Buffer
404 simply returns a string containing the object type. This extends the
405 usefulness of the Printf macros. Previously, Concatenate would abort the
406 control method if a non-data object was encountered.
408 ACPICA source code: Deployed the C "const" keyword across the source code
409 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
411 Example Code and Data Size: These are the sizes for the OS-independent
412 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
413 debug version of the code includes the debug output trace mechanism and
414 has a much larger code and data size.
417 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
418 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
420 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
421 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
424 2) iASL Compiler/Disassembler and Tools:
426 iASL/Disassembler: Improved the heuristic used to determine the number of
427 arguments for an externally defined control method (a method in another
428 table). Although this is an improvement, there is no deterministic way to
429 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
430 will completely solve this problem as it is deployed (automatically) in
433 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
434 statements that could cause errors when the disassembled file is
435 compiled. ACPICA BZ 1243. David Box.
437 iASL: Fixed a regression caused by the merger of the two versions of the
438 local strtoul64. Because of a dependency on a global variable, strtoul64
439 could return an error for integers greater than a 32-bit value. ACPICA BZ
442 iASL: Fixed a regression where a fault could occur for an ASL Return
443 statement if it invokes a control method that is not resolved. ACPICA BZ
446 AcpiXtract: Improved input file validation: detection of binary files and
447 non-acpidump text files.
449 ----------------------------------------
450 12 February 2016. Summary of changes for version 20160212:
452 1) ACPICA kernel-resident subsystem:
454 Implemented full support for the ACPI 6.1 specification (released in
455 January). This version of the specification is available at:
456 http://www.uefi.org/specifications
458 Only a relatively small number of changes were required in ACPICA to
459 support ACPI 6.1, in these areas:
460 - New predefined names
462 - A new subtable for HEST
463 - A few other header changes for new values
465 Ensure \_SB_._INI is executed before any _REG methods are executed. There
466 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
468 Reverted a change made in version 20151218 which enabled method
469 invocations to be targets of various ASL operators (SuperName and Target
470 grammar elements). While the new behavior is supported by the ACPI
471 specification, other AML interpreters do not support this behavior and
472 never will. The ACPI specification will be updated for ACPI 6.2 to remove
473 this support. Therefore, the change was reverted to the original ACPICA
476 ACPICA now supports the GCC 6 compiler.
478 Current Release: (Note: build changes increased sizes)
479 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
480 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
482 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
483 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
486 2) iASL Compiler/Disassembler and Tools:
488 Completed full support for the ACPI 6.0 External() AML opcode. The
489 compiler emits an external AML opcode for each ASL External statement.
490 This opcode is used by the disassembler to assist with the disassembly of
491 external control methods by specifying the required number of arguments
492 for the method. AML interpreters do not use this opcode. To ensure that
493 interpreters do not even see the opcode, a block of one or more external
494 opcodes is surrounded by an "If(0)" construct. As this feature becomes
495 commonly deployed in BIOS code, the ability of disassemblers to correctly
496 disassemble AML code will be greatly improved. David Box.
498 iASL: Implemented support for an optional cross-reference output file.
499 The -lx option will create a the cross-reference file with the suffix
500 "xrf". Three different types of cross-reference are created in this file:
501 - List of object references made from within each control method
502 - Invocation (caller) list for each user-defined control method
503 - List of references to each non-method object in the namespace
505 iASL: Method invocations as ASL Target operands are now disallowed and
506 flagged as errors in preparation for ACPI 6.2 (see the description of the
509 ----------------------------------------
510 8 January 2016. Summary of changes for version 20160108:
512 1) ACPICA kernel-resident subsystem:
514 Updated all ACPICA copyrights and signons to 2016: Added the 2016
515 copyright to all source code module headers and utility/tool signons.
516 This includes the standard Linux dual-license header. This affects
517 virtually every file in the ACPICA core subsystem, iASL compiler, all
518 ACPICA utilities, and the ACPICA test suite.
520 Fixed a regression introduced in version 20151218 concerning the
521 execution of so-called module-level ASL/AML code. Namespace objects
522 created under a module-level If() construct were not properly/fully
523 entered into the namespace and could cause an interpreter fault when
526 Example Code and Data Size: These are the sizes for the OS-independent
527 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
528 debug version of the code includes the debug output trace mechanism and
529 has a much larger code and data size.
532 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
533 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
535 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
536 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
539 2) iASL Compiler/Disassembler and Tools:
541 Fixed a problem with the compilation of the GpioIo and GpioInt resource
542 descriptors. The _PIN field name was incorrectly defined to be an array
543 of 32-bit values, but the _PIN values are in fact 16 bits each. This
544 would cause incorrect bit width warnings when using Word (16-bit) fields
545 to access the descriptors.
548 ----------------------------------------
549 18 December 2015. Summary of changes for version 20151218:
551 1) ACPICA kernel-resident subsystem:
553 Implemented per-AML-table execution of "module-level code" as individual
554 ACPI tables are loaded into the namespace during ACPICA initialization.
555 In other words, any module-level code within an AML table is executed
556 immediately after the table is loaded, instead of batched and executed
557 after all of the tables have been loaded. This provides compatibility
558 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
561 To fully support the feature above, the default operation region handlers
562 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
563 installed before any ACPI tables are loaded. This enables module-level
564 code to access these address spaces during the table load and module-
565 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
568 Implemented several changes to the internal _REG support in conjunction
569 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
570 utilities for the changes above. Although these tools were changed, host
571 operating systems that simply use the default handlers for SystemMemory,
572 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
574 For example, in the code below, DEV1 is conditionally added to the
575 namespace by the DSDT via module-level code that accesses an operation
576 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
577 created immediately after the DSDT is loaded in order for the SSDT to
578 successfully reference DEV1. Previously, this code would cause an
579 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
580 fully supported by ACPICA.
582 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
584 OperationRegion (OPR1, SystemMemory, 0x400, 32)
585 Field (OPR1, AnyAcc, NoLock, Preserve)
596 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
598 External (\DEV1, DeviceObj)
604 Fixed an AML interpreter problem where control method invocations were
605 not handled correctly when the invocation was itself a SuperName argument
606 to another ASL operator. In these cases, the method was not invoked.
607 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
615 Signal, Release, Reset
618 Implemented automatic String-to-ObjectReference conversion support for
619 packages returned by predefined names (such as _DEP). A common BIOS error
620 is to add double quotes around an ObjectReference namepath, which turns
621 the reference into an unexpected string object. This support detects the
622 problem and corrects it before the package is returned to the caller that
623 invoked the method. Lv Zheng.
625 Implemented extensions to the Concatenate operator. Concatenate now
626 accepts any type of object, it is not restricted to simply
627 Integer/String/Buffer. For objects other than these 3 basic data types,
628 the argument is treated as a string containing the name of the object
629 type. This expands the utility of Concatenate and the Printf/Fprintf
630 macros. ACPICA BZ 1222.
632 Cleaned up the output of the ASL Debug object. The timer() value is now
633 optional and no longer emitted by default. Also, the basic data types of
634 Integer/String/Buffer are simply emitted as their values, without a data
635 type string -- since the data type is obvious from the output. ACPICA BZ
638 Example Code and Data Size: These are the sizes for the OS-independent
639 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
640 debug version of the code includes the debug output trace mechanism and
641 has a much larger code and data size.
644 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
645 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
647 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
648 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
651 2) iASL Compiler/Disassembler and Tools:
653 iASL: Fixed some issues with the ASL Include() operator. This operator
654 was incorrectly defined in the iASL parser rules, causing a new scope to
655 be opened for the code within the include file. This could lead to
656 several issues, including allowing ASL code that is technically illegal
657 and not supported by AML interpreters. Note, this does not affect the
658 related #include preprocessor operator. ACPICA BZ 1212.
660 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
661 operator is essentially an ASL macro since there is no AML opcode
662 associated with it. The code emitted by the iASL compiler for ElseIf is
663 an Else opcode followed immediately by an If opcode. The disassembler
664 will now emit an ElseIf if it finds an Else immediately followed by an
665 If. This simplifies the decoded ASL, especially for deeply nested
666 If..Else and large Switch constructs. Thus, the disassembled code more
667 closely follows the original source ASL. ACPICA BZ 1211. Example:
679 ElseIf (Arg0 == 0x02)
684 AcpiExec: Added support for the new module level code behavior and the
685 early region installation. This required a small change to the
686 initialization, since AcpiExec must install its own operation region
689 AcpiExec: Added support to make the debug object timer optional. Default
690 is timer disabled. This cleans up the debug object output -- the timer
693 AcpiExec: Multiple ACPI tables are now loaded in the order that they
694 appear on the command line. This can be important when there are
695 interdependencies/references between the tables.
697 iASL/Templates. Add support to generate template files with multiple
698 SSDTs within a single output file. Also added ommand line support to
699 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
703 ----------------------------------------
704 24 November 2015. Summary of changes for version 20151124:
706 1) ACPICA kernel-resident subsystem:
708 Fixed a possible regression for a previous update to FADT handling. The
709 FADT no longer has a fixed table ID, causing some issues with code that
710 was hardwired to a specific ID. Lv Zheng.
712 Fixed a problem where the method auto-serialization could interfere with
713 the current SyncLevel. This change makes the auto-serialization support
714 transparent to the SyncLevel support and management.
716 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
717 interface is intended for early access to the namespace during the
718 initial namespace device discovery walk. The _SUB method has been seen to
719 access operation regions in some cases, causing errors because the
720 operation regions are not fully initialized.
722 AML Debugger: Fixed some issues with the terminate/quit/exit commands
723 that can cause faults. Lv Zheng.
725 AML Debugger: Add thread ID support so that single-step mode only applies
726 to the AML Debugger thread. This prevents runtime errors within some
729 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
730 methods that are invoked by this interface are optional, removed warnings
731 emitted for the case where one or more of these methods do not exist.
732 ACPICA BZ 1208, original change by Prarit Bhargava.
734 Made a major pass through the entire ACPICA source code base to
735 standardize formatting that has diverged a bit over time. There are no
736 functional changes, but this will of course cause quite a few code
737 differences from the previous ACPICA release.
739 Example Code and Data Size: These are the sizes for the OS-independent
740 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
741 debug version of the code includes the debug output trace mechanism and
742 has a much larger code and data size.
745 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
746 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
748 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
749 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
752 2) iASL Compiler/Disassembler and Tools:
754 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
755 definition blocks within a single ASL file and the resulting AML file.
756 Support for this type of file was also added to the various tools that
757 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
758 example code below shows two definition blocks within the same file:
760 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
764 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
768 iASL: Enhanced typechecking for the Name() operator. All expressions for
769 the value of the named object must be reduced/folded to a single constant
770 at compile time, as per the ACPI specification (the AML definition of
773 iASL: Fixed some code indentation issues for the -ic and -ia options (C
774 and assembly headers). Now all emitted code correctly begins in column 1.
776 iASL: Added an error message for an attempt to open a Scope() on an
777 object defined in an SSDT. The DSDT is always loaded into the namespace
778 first, so any attempt to open a Scope on an SSDT object will fail at
782 ----------------------------------------
783 30 September 2015. Summary of changes for version 20150930:
785 1) ACPICA kernel-resident subsystem:
787 Debugger: Implemented several changes and bug fixes to assist support for
788 the in-kernel version of the AML debugger. Lv Zheng.
789 - Fix the "predefined" command for in-kernel debugger.
790 - Do not enter debug command loop for the help and version commands.
791 - Disallow "execute" command during execution/single-step of a method.
793 Interpreter: Updated runtime typechecking for all operators that have
794 target operands. The operand is resolved and validated that it is legal.
795 For example, the target cannot be a non-data object such as a Device,
796 Mutex, ThermalZone, etc., as per the ACPI specification.
798 Debugger: Fixed the double-mutex user I/O handshake to work when local
799 deadlock detection is enabled.
801 Debugger: limited display of method locals and arguments (LocalX and
802 ArgX) to only those that have actually been initialized. This prevents
803 lines of extraneous output.
805 Updated the definition of the NFIT table to correct the bit polarity of
806 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
808 Example Code and Data Size: These are the sizes for the OS-independent
809 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
810 debug version of the code includes the debug output trace mechanism and
811 has a much larger code and data size.
814 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
815 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
817 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
818 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
821 2) iASL Compiler/Disassembler and Tools:
823 iASL: Improved the compile-time typechecking for operands of many of the
826 -- Added an option to disable compiler operand/operator typechecking (-
829 -- For the following operators, the TermArg operands are now validated
830 when possible to be Integer data objects: BankField, OperationRegion,
831 DataTableRegion, Buffer, and Package.
833 -- Store (Source, Target): Both the source and target operands are
834 resolved and checked that the operands are both legal. For example,
835 neither operand can be a non-data object such as a Device, Mutex,
836 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
837 operator can be used to store an object to any type of target object.
839 -- Store (Source, Target): If the source is a Package object, the target
840 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
841 is a Package, the source must also be a Package.
843 -- Store (Source, Target): A warning is issued if the source and target
844 resolve to the identical named object.
846 -- Store (Source, <method invocation>): An error is generated for the
847 target method invocation, as this construct is not supported by the AML
850 -- For all ASL math and logic operators, the target operand must be a
851 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
852 includes the function return value also.
854 -- External declarations are also included in the typechecking where
855 possible. External objects defined using the UnknownObj keyword cannot be
856 typechecked, however.
858 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
860 - Legacy code: Index(PKG1, 3)
861 - New ASL+ code: PKG1[3]
862 This completes the ACPI 6.0 ASL+ support as it was the only operator not
865 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
866 spaces were inadvertently appended to the filename, causing file access
867 and deletion problems on some systems.
869 ASL Test Suite (ASLTS): Updated the master makefile to generate all
870 possible compiler output files when building the test suite -- thus
871 exercising these features of the compiler. These files are automatically
872 deleted when the test suite exits.
875 ----------------------------------------
876 18 August 2015. Summary of changes for version 20150818:
878 1) ACPICA kernel-resident subsystem:
880 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
881 Zheng. ACPICA BZ 1186.
883 Completed development to ensure that the ACPICA Disassembler and Debugger
884 are fully standalone components of ACPICA. Removed cross-component
885 dependences. Lv Zheng.
887 The max-number-of-AML-loops is now runtime configurable (previously was
888 compile-time only). This is essentially a loop timeout to force-abort
889 infinite AML loops. ACPCIA BZ 1192.
891 Debugger: Cleanup output to dump ACPI names and namepaths without any
892 trailing underscores. Lv Zheng. ACPICA BZ 1135.
894 Removed unnecessary conditional compilations across the Debugger and
895 Disassembler components where entire modules could be left uncompiled.
897 The aapits test is deprecated and has been removed from the ACPICA git
898 tree. The test has never been completed and has not been maintained, thus
899 becoming rather useless. ACPICA BZ 1015, 794.
901 A batch of small changes to close bugzilla and other reports:
902 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
903 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
904 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
905 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
907 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
909 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
911 - Debugger: Split debugger initialization/termination interfaces. Lv
913 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
915 - AcpiExec: Add debug message during _REG method phase during table
917 - AcpiNames: Fix a regression where some output was missing and no longer
919 - Debugger: General cleanup and simplification. Lv Zheng.
920 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
922 Example Code and Data Size: These are the sizes for the OS-independent
923 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
924 debug version of the code includes the debug output trace mechanism and
925 has a much larger code and data size.
928 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
929 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
931 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
932 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
935 2) iASL Compiler/Disassembler and Tools:
937 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
938 were not handled properly and caused load errors. Now, properly invoke
939 and use the ACPICA auto-reallocate mechanism for ACPI table data
940 structures. ACPICA BZ 1188
942 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
945 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
946 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
947 executed during initialization. ACPICA BZ 1187, 1189.
949 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
950 that corresponds to each disassembled ASL statement, to simplify
951 debugging. ACPICA BZ 1191.
953 Debugger: Add option to the "objects" command to display a summary of the
954 current namespace objects (Object type and count). This is displayed if
955 the command is entered with no arguments.
957 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
960 ----------------------------------------
961 17 July 2015. Summary of changes for version 20150717:
963 1) ACPICA kernel-resident subsystem:
965 Improved the partitioning between the Debugger and Disassembler
966 components. This allows the Debugger to be used standalone within kernel
967 code without the Disassembler (which is used for single stepping also).
968 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
970 Debugger: Implemented a new command to trace the execution of control
971 methods (Trace). This is especially useful for the in-kernel version of
972 the debugger when file I/O may not be available for method trace output.
973 See the ACPICA reference for more information. Lv Zheng.
975 Moved all C library prototypes (used for the local versions of these
976 functions when requested) to a new header, acclib.h
977 Cleaned up the use of non-ANSI C library functions. These functions are
978 implemented locally in ACPICA. Moved all such functions to a common
979 source file, utnonansi.c
981 Debugger: Fixed a problem with the "!!" command (get last command
982 executed) where the debugger could enter an infinite loop and eventually
985 Removed the use of local macros that were used for some of the standard C
986 library functions to automatically cast input parameters. This mostly
987 affected the is* functions where the input parameter is defined to be an
988 int. This required a few modifications to the main ACPICA source code to
989 provide casting for these functions and eliminate possible compiler
990 warnings for these parameters.
992 Across the source code, added additional status/error checking to resolve
993 issues discovered by static source code analysis tools such as Coverity.
995 Example Code and Data Size: These are the sizes for the OS-independent
996 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
997 debug version of the code includes the debug output trace mechanism and
998 has a much larger code and data size.
1001 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1002 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1004 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1005 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1008 2) iASL Compiler/Disassembler and Tools:
1010 iASL: Fixed a regression where the device map file feature no longer
1011 worked properly when used in conjunction with the disassembler. It only
1012 worked properly with the compiler itself.
1014 iASL: Implemented a new warning for method LocalX variables that are set
1015 but never used (similar to a C compiler such as gcc). This also applies
1016 to ArgX variables that are not defined by the parent method, and are
1017 instead (legally) used as local variables.
1019 iASL/Preprocessor: Finished the pass-through of line numbers from the
1020 preprocessor to the compiler. This ensures that compiler errors/warnings
1021 have the correct original line numbers and filenames, regardless of any
1024 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1025 pass-through of comments to the preprocessor output file (which becomes
1026 the compiler input file). Also fixed a problem with // comments that
1027 appear after a math expression.
1029 iASL: Added support for the TCPA server table to the table compiler and
1030 template generator. (The client table was already previously supported)
1032 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1033 identify the iASL compiler.
1035 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1036 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1039 AcpiHelp: Update to expand help messages for the iASL preprocessor
1043 ----------------------------------------
1044 19 June 2015. Summary of changes for version 20150619:
1046 Two regressions in version 20150616 have been addressed:
1048 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1049 etc.) This update changes ACPICA to only use the standard headers for
1050 functions, or the prototypes for the local versions of the C library
1051 functions. Across the source code, this required some additional casts
1052 for some Clib invocations for portability. Moved all local prototypes to
1053 a new file, acclib.h
1055 Fixes several problems with recent changes to the handling of the FACS
1056 table that could cause some systems not to boot.
1059 ----------------------------------------
1060 16 June 2015. Summary of changes for version 20150616:
1063 1) ACPICA kernel-resident subsystem:
1065 Across the entire ACPICA source code base, the various macros for the C
1066 library functions (such as ACPI_STRLEN, etc.) have been removed and
1067 replaced by the standard C library names (strlen, etc.) The original
1068 purpose for these macros is no longer applicable. This simplification
1069 reduces the number of macros used in the ACPICA source code
1070 significantly, improving readability and maintainability.
1072 Implemented support for a new ACPI table, the OSDT. This table, the
1073 "override" SDT, can be loaded directly by the host OS at boot time. It
1074 enables the replacement of existing namespace objects that were installed
1075 via the DSDT and/or SSDTs. The primary purpose for this is to replace
1076 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
1077 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
1080 Added support for systems with (improperly) two FACS tables -- a "32-bit"
1081 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
1082 X field). This change will support both automatically. There continues to
1083 be systems found with this issue. This support requires a change to the
1084 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
1085 been added to allow the host to select which FACS is desired
1086 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
1089 Added a new feature to allow for systems that do not contain an FACS.
1090 Although this is already supported on hardware-reduced platforms, the
1091 feature has been extended for all platforms. The reasoning is that we do
1092 not want to abort the entire ACPICA initialization just because the
1093 system is seriously buggy and has no FACS.
1095 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
1096 not correctly transcribed from the ACPI specification in ACPICA version
1099 Implemented support for the _CLS object in the AcpiGetObjectInfo external
1102 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
1103 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
1104 compiler also updated. Note: The TCPA "server" table is not supported by
1105 the disassembler/table-compiler at this time.
1107 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
1109 Example Code and Data Size: These are the sizes for the OS-independent
1110 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1111 debug version of the code includes the debug output trace mechanism and
1112 has a much larger code and data size.
1115 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1116 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1118 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1119 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1122 2) iASL Compiler/Disassembler and Tools:
1124 Disassembler: Fixed a problem with the new symbolic operator disassembler
1125 where incorrect ASL code could be emitted in some cases for the "non-
1126 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
1127 ShiftRight. The actual problem cases seem to be rather unusual in common
1128 ASL code, however. David Box.
1130 Modified the linux version of acpidump to obtain ACPI tables from not
1131 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
1134 iASL: Fixed a problem where the user preprocessor output file (.i)
1135 contained extra data that was not expected. The compiler was using this
1136 file as a temporary file and passed through #line directives in order to
1137 keep compiler error messages in sync with the input file and line number
1138 across multiple include files. The (.i) is no longer a temporary file as
1139 the compiler uses a new, different file for the original purpose.
1141 iASL: Fixed a problem where comments within the original ASL source code
1142 file were not passed through to the preprocessor output file, nor any
1145 iASL: Fixed some issues for the handling of the "#include" preprocessor
1146 directive and the similar (but not the same) "Include" ASL operator.
1148 iASL: Add support for the new OSDT in both the disassembler and compiler.
1150 iASL: Fixed a problem with the constant folding support where a Buffer
1151 object could be incorrectly generated (incorrectly formed) during a
1152 conversion to a Store() operator.
1154 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
1155 description text for the _REV predefined name. _REV now permanently
1156 returns 2, as per the ACPI 6.0 specification.
1158 Debugger: Enhanced the output of the Debug ASL object for references
1159 produced by the Index operator. For Buffers and strings, only output the
1160 actual byte pointed to by the index. For packages, only print the single
1161 package element decoded by the index. Previously, the entire
1162 buffer/string/package was emitted.
1164 iASL/Table-compiler: Fixed a regression where the "generic" data types
1165 were no longer recognized, causing errors.
1168 ----------------------------------------
1169 15 May 2015. Summary of changes for version 20150515:
1171 This release implements most of ACPI 6.0 as described below.
1173 1) ACPICA kernel-resident subsystem:
1175 Implemented runtime argument checking and return value checking for all
1176 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
1177 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
1179 Example Code and Data Size: These are the sizes for the OS-independent
1180 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1181 debug version of the code includes the debug output trace mechanism and
1182 has a much larger code and data size.
1185 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1186 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1188 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1189 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1192 2) iASL Compiler/Disassembler and Tools:
1194 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
1195 names (argument count validation and return value typechecking.)
1197 iASL disassembler and table compiler: implemented support for all new
1198 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
1200 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
1203 iASL preprocessor: Added a new directive to enable inclusion of binary
1204 blobs into ASL code. The new directive is #includebuffer. It takes a
1205 binary file as input and emits a named ascii buffer object into the ASL
1208 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
1210 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
1213 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
1217 ----------------------------------------
1218 10 April 2015. Summary of changes for version 20150410:
1220 Reverted a change introduced in version 20150408 that caused
1221 a regression in the disassembler where incorrect operator
1222 symbols could be emitted.
1225 ----------------------------------------
1226 08 April 2015. Summary of changes for version 20150408:
1229 1) ACPICA kernel-resident subsystem:
1231 Permanently set the return value for the _REV predefined name. It now
1232 returns 2 (was 5). This matches other ACPI implementations. _REV will be
1233 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
1234 for ACPI 2.0 and later. It should never be used to differentiate or
1235 identify operating systems.
1237 Added the "Windows 2015" string to the _OSI support. ACPICA will now
1238 return TRUE to a query with this string.
1240 Fixed several issues with the local version of the printf function.
1242 Added the C99 compiler option (-std=c99) to the Unix makefiles.
1245 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
1246 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
1248 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1249 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1252 2) iASL Compiler/Disassembler and Tools:
1254 iASL: Implemented an enhancement to the constant folding feature to
1255 transform the parse tree to a simple Store operation whenever possible:
1256 Add (2, 3, X) ==> is converted to: Store (5, X)
1257 X = 2 + 3 ==> is converted to: Store (5, X)
1259 Updated support for the SLIC table (Software Licensing Description Table)
1260 in both the Data Table compiler and the disassembler. The SLIC table
1261 support now conforms to "Microsoft Software Licensing Tables (SLIC and
1262 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
1263 following the ACPI header is now defined to be "Proprietary Data", and as
1264 such, can only be entered or displayed as a hex data block.
1266 Implemented full support for the MSDM table as described in the document
1267 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
1268 following the ACPI header is defined to be "Proprietary Data", and can
1269 only be entered or displayed as a hex data block.
1271 Implemented the -Pn option for the iASL Table Compiler (was only
1272 implemented for the ASL compiler). This option disables the iASL
1275 Disassembler: For disassembly of Data Tables, added a comment field
1276 around the Ascii equivalent data that is emitted as part of the "Raw
1277 Table Data" block. This prevents the iASL Preprocessor from possible
1278 confusion if/when the table is compiled.
1280 Disassembler: Added an option (-df) to force the disassembler to assume
1281 that the table being disassembled contains valid AML. This feature is
1282 useful for disassembling AML files that contain ACPI signatures other
1283 than DSDT or SSDT (such as OEMx or other signatures).
1285 Changes for the EFI version of the tools:
1286 1) Fixed a build error/issue
1287 2) Fixed a cast warning
1289 iASL: Fixed a path issue with the __FILE__ operator by making the
1290 directory prefix optional within the internal SplitInputFilename
1293 Debugger: Removed some unused global variables.
1295 Tests: Updated the makefile for proper generation of the AAPITS suite.
1298 ----------------------------------------
1299 04 February 2015. Summary of changes for version 20150204:
1301 ACPICA kernel-resident subsystem:
1303 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1304 copyright to all module headers and signons, including the standard Linux
1305 header. This affects virtually every file in the ACPICA core subsystem,
1306 iASL compiler, all ACPICA utilities, and the test suites.
1308 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
1309 A raw gpe handling mechanism was created to allow better handling of GPE
1310 storms that aren't easily managed by the normal handler. The raw handler
1311 allows disabling/renabling of the the GPE so that interrupt storms can be
1312 avoided in cases where events cannot be timely serviced. In this
1313 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
1314 GPE. This API will leave the reference counts undisturbed, thereby
1315 preventing unintentional clearing of the GPE when the intent in only to
1316 temporarily disable it. Raw handlers allow enabling and disabling of a
1317 GPE by removing GPE register locking. As such, raw handlers much provide
1318 their own locks while using GPE API's to protect access to GPE data
1322 Events: Always modify GPE registers under the GPE lock.
1323 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
1324 values. Reported as bug by joe.liu@apple.com.
1326 Unix makefiles: Separate option to disable optimizations and
1327 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
1328 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
1329 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
1330 errors when building ACPICA. This allows disabling the option without
1331 also having to disable optimazations.
1335 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1336 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
1339 --------------------------------------
1340 07 November 2014. Summary of changes for version 20141107:
1342 This release is available at https://acpica.org/downloads
1344 This release introduces and implements language extensions to ASL that
1345 provide support for symbolic ("C-style") operators and expressions. These
1346 language extensions are known collectively as ASL+.
1349 1) iASL Compiler/Disassembler and Tools:
1351 Disassembler: Fixed a problem with disassembly of the UartSerialBus
1352 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
1355 Disassembler: Fixed the Unicode macro support to add escape sequences.
1356 All non-printable ASCII values are emitted as escape sequences, as well
1357 as the standard escapes for quote and backslash. Ensures that the
1358 disassembled macro can be correctly recompiled.
1360 iASL: Added Printf/Fprintf macros for formatted output. These macros are
1361 translated to existing AML Concatenate and Store operations. Printf
1362 writes to the ASL Debug object. Fprintf allows the specification of an
1363 ASL name as the target. Only a single format specifier is required, %o,
1364 since the AML interpreter dynamically converts objects to the required
1367 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1368 (Concatenate (Concatenate (Concatenate ("", Arg0),
1369 ": Unexpected value for "), Arg1), ", "), Arg2),
1370 " at line "), Arg3), Debug)
1372 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
1373 Arg0, Arg1, Arg2, Arg3)
1375 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1376 ("", Arg1), ": "), Arg0), " Successful"), STR1)
1378 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
1380 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
1381 ASL parse tree before the AML code is generated. This allows blocks of
1382 ASL code to be removed in order to help locate and identify problem
1383 devices and/or code. David E. Box.
1385 AcpiExec: Added support (-fi) for an optional namespace object
1386 initialization file. This file specifies initial values for namespace
1387 objects as necessary for debugging and testing different ASL code paths
1388 that may be taken as a result of BIOS options.
1391 2) Overview of symbolic operator support for ASL (ASL+)
1392 -------------------------------------------------------
1394 As an extension to the ASL language, iASL implements support for symbolic
1395 (C-style) operators for math and logical expressions. This can greatly
1396 simplify ASL code as well as improve both readability and
1397 maintainability. These language extensions can exist concurrently with
1398 all legacy ASL code and expressions.
1400 The symbolic extensions are 100% compatible with existing AML
1401 interpreters, since no new AML opcodes are created. To implement the
1402 extensions, the iASL compiler transforms the symbolic expressions into
1403 the legacy ASL/AML equivalents at compile time.
1405 Full symbolic expressions are supported, along with the standard C
1406 precedence and associativity rules.
1408 Full disassembler support for the symbolic expressions is provided, and
1409 creates an automatic migration path for existing ASL code to ASL+ code
1410 via the disassembly process. By default, the disassembler now emits ASL+
1411 code with symbolic expressions. An option (-dl) is provided to force the
1412 disassembler to emit legacy ASL code if desired.
1414 Below is the complete list of the currently supported symbolic operators
1415 with examples. See the iASL User Guide for additional information.
1418 ASL+ Syntax Legacy ASL Equivalent
1419 ----------- ---------------------
1423 Z = X + Y Add (X, Y, Z)
1424 Z = X - Y Subtract (X, Y, Z)
1425 Z = X * Y Multiply (X, Y, Z)
1426 Z = X / Y Divide (X, Y, , Z)
1427 Z = X % Y Mod (X, Y, Z)
1428 Z = X << Y ShiftLeft (X, Y, Z)
1429 Z = X >> Y ShiftRight (X, Y, Z)
1430 Z = X & Y And (X, Y, Z)
1431 Z = X | Y Or (X, Y, Z)
1432 Z = X ^ Y Xor (X, Y, Z)
1437 // Logical operators
1439 (X == Y) LEqual (X, Y)
1440 (X != Y) LNotEqual (X, Y)
1441 (X < Y) LLess (X, Y)
1442 (X > Y) LGreater (X, Y)
1443 (X <= Y) LLessEqual (X, Y)
1444 (X >= Y) LGreaterEqual (X, Y)
1445 (X && Y) LAnd (X, Y)
1449 // Assignment and compound assignment operations
1452 X += Y Add (X, Y, X)
1453 X -= Y Subtract (X, Y, X)
1454 X *= Y Multiply (X, Y, X)
1455 X /= Y Divide (X, Y, , X)
1456 X %= Y Mod (X, Y, X)
1457 X <<= Y ShiftLeft (X, Y, X)
1458 X >>= Y ShiftRight (X, Y, X)
1459 X &= Y And (X, Y, X)
1461 X ^= Y Xor (X, Y, X)
1468 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
1469 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
1471 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
1473 And (MEMB, 0xFFFFFFF0, SRMB)
1474 Store (MEMB, Local2)
1475 Store (PDBM, Local1)
1476 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
1478 Or (PDBM, 0x02, PDBM)
1482 If (((R510 & 0x03FB) == 0x02E0) ||
1483 ((R520 & 0x03FB) == 0x02E0) ||
1484 ((R530 & 0x03FB) == 0x02E0) ||
1485 ((R540 & 0x03FB) == 0x02E0))
1487 SRMB = (MEMB & 0xFFFFFFF0)
1490 PDBM &= 0xFFFFFFFFFFFFFFF9
1496 Store (0x1234, Local1)
1497 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
1498 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
1499 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
1500 Store (Index (PKG1, 0x03), Local6)
1501 Store (Add (Local3, Local2), Debug)
1502 Add (Local1, 0x0F, Local2)
1503 Add (Local1, Multiply (Local2, Local3), Local2)
1504 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
1508 Local3 = (((Local1 + TEST) + 0x20) * Local2)
1509 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
1510 Local3 = (Local1 + (TEST + (0x20 * Local2)))
1511 Local6 = Index (PKG1, 0x03)
1512 Debug = (Local3 + Local2)
1513 Local2 = (Local1 + 0x0F)
1514 Local2 = (Local1 + (Local2 * Local3))
1515 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
1518 ----------------------------------------
1519 26 September 2014. Summary of changes for version 20140926:
1521 1) ACPICA kernel-resident subsystem:
1523 Updated the GPIO operation region handler interface (GeneralPurposeIo).
1524 In order to support GPIO Connection objects with multiple pins, along
1525 with the related Field objects, the following changes to the interface
1526 have been made: The Address is now defined to be the offset in bits of
1527 the field unit from the previous invocation of a Connection. It can be
1528 viewed as a "Pin Number Index" into the connection resource descriptor.
1529 The BitWidth is the exact bit width of the field. It is usually one bit,
1530 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
1531 additional information and examples.
1533 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
1534 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
1535 by the firmware), so that they cannot fire until they are enabled via
1536 AcpiUpdateAllGpes. Rafael J. Wysocki.
1538 Added a new return flag for the Event/GPE status interfaces --
1539 AcpiGetEventStatus and AcpiGetGpeStatus. The new
1540 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
1541 GPE currently has a handler associated with it, and can thus actually
1542 affect the system. Lv Zheng.
1544 Example Code and Data Size: These are the sizes for the OS-independent
1545 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1546 debug version of the code includes the debug output trace mechanism and
1547 has a much larger code and data size.
1550 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1551 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1553 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1554 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1556 2) iASL Compiler/Disassembler and Tools:
1558 iASL: Fixed a memory allocation/free regression introduced in 20140828
1559 that could cause the compiler to crash. This was introduced inadvertently
1560 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
1563 iASL: Removed two error messages that have been found to create false
1564 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
1565 1) Illegal forward reference within a method
1566 2) Illegal reference across two methods
1568 iASL: Implemented a new option (-lm) to create a hardware mapping file
1569 that summarizes all GPIO, I2C, SPI, and UART connections. This option
1570 works for both the compiler and disassembler. See the iASL compiler user
1571 guide for additional information and examples (section 6.4.6).
1573 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
1574 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
1575 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
1577 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
1578 unless STDIN is actually a terminal. Assists with batch-mode processing.
1581 Disassembler/AcpiHelp: Added another large group of recognized _HID
1585 ----------------------------------------
1586 28 August 2014. Summary of changes for version 20140828:
1588 1) ACPICA kernel-resident subsystem:
1590 Fixed a problem related to the internal use of the Timer() operator where
1591 a 64-bit divide could cause an attempted link to a double-precision math
1592 library. This divide is not actually necessary, so the code was
1593 restructured to eliminate it. Lv Zheng.
1595 ACPI 5.1: Added support for the runtime validation of the _DSD package
1596 (similar to the iASL support).
1598 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
1599 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
1601 Example Code and Data Size: These are the sizes for the OS-independent
1602 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1603 debug version of the code includes the debug output trace mechanism and
1604 has a much larger code and data size.
1607 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1608 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1610 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
1611 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1613 2) iASL Compiler/Disassembler and Tools:
1615 AcpiExec: Fixed a problem on unix systems where the original terminal
1616 state was not always properly restored upon exit. Seen when using the -v
1617 option. ACPICA BZ 1104.
1619 iASL: Fixed a problem with the validation of the ranges/length within the
1620 Memory24 resource descriptor. There was a boundary condition when the
1621 range was equal to the (length -1) caused by the fact that these values
1622 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
1624 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
1626 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
1628 now supported properly.
1630 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
1631 in the disassembler, data table compiler, and table template generator.
1633 iASL: Added a requirement for Device() objects that one of either a _HID
1634 or _ADR must exist within the scope of a Device, as per the ACPI
1635 specification. Remove a similar requirement that was incorrectly in place
1636 for the _DSD object.
1638 iASL: Added error detection for illegal named references within control
1639 methods that would cause runtime failures. Now trapped as errors are: 1)
1640 References to objects within a non-parent control method. 2) Forward
1641 references (within a method) -- for control methods, AML interpreters use
1642 a one-pass parse of control methods. ACPICA BZ 1008.
1644 iASL: Added error checking for dependencies related to the _PSx power
1645 methods. ACPICA BZ 1029.
1646 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
1648 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
1651 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
1652 deploying the existing object and string caches and adding new caches for
1655 iASL: Split the huge parser source file into multiple subfiles to improve
1656 manageability. Generation now requires the M4 macro preprocessor, which
1657 is part of the Bison distribution on both unix and windows platforms.
1659 AcpiSrc: Fixed and removed all extraneous warnings generated during
1660 entire ACPICA source code scan and/or conversion.
1663 ----------------------------------------
1665 24 July 2014. Summary of changes for version 20140724:
1667 The ACPI 5.1 specification has been released and is available at:
1668 http://uefi.org/specs/access
1671 0) ACPI 5.1 support in ACPICA:
1673 ACPI 5.1 is fully supported in ACPICA as of this release.
1675 New predefined names. Support includes iASL and runtime ACPICA
1677 _CCA (Cache Coherency Attribute).
1678 _DSD (Device-Specific Data). David Box.
1680 Modifications to existing ACPI tables. Support includes headers, iASL
1681 Data Table compiler, disassembler, and the template generator.
1682 FADT - New fields and flags. Graeme Gregory.
1683 GTDT - One new subtable and new fields. Tomasz Nowicki.
1684 MADT - Two new subtables. Tomasz Nowicki.
1685 PCCT - One new subtable.
1688 New notification type for System Resource Affinity change events.
1691 1) ACPICA kernel-resident subsystem:
1693 Fixed a regression introduced in 20140627 where a fault can happen during
1694 the deletion of Alias AML namespace objects. The problem affected both
1695 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
1697 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
1698 simple mechanism to enable wake GPEs that have no associated handler or
1699 control method. Rafael Wysocki.
1701 Updated the AcpiEnableGpe interface to disallow the enable if there is no
1702 handler or control method associated with the particular GPE. This will
1703 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
1705 Updated GPE handling and dispatch by disabling the GPE before clearing
1706 the status bit for edge-triggered GPEs. Lv Zheng.
1708 Added Timer() support to the AML Debug object. The current timer value is
1709 now displayed with each invocation of (Store to) the debug object to
1710 enable simple generation of execution times for AML code (method
1711 execution for example.) ACPICA BZ 1093.
1713 Example Code and Data Size: These are the sizes for the OS-independent
1714 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1715 debug version of the code includes the debug output trace mechanism and
1716 has a much larger code and data size.
1719 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
1720 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1722 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1723 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1726 2) iASL Compiler/Disassembler and Tools:
1728 Fixed an issue with the recently added local printf implementation,
1729 concerning width/precision specifiers that could cause incorrect output.
1730 Lv Zheng. ACPICA BZ 1094.
1732 Disassembler: Added support to detect buffers that contain UUIDs and
1733 disassemble them to an invocation of the ToUUID operator. Also emit
1734 commented descriptions of known ACPI-related UUIDs.
1736 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
1737 -u. Adds three new files.
1739 iASL: Update table compiler and disassembler for DMAR table changes that
1740 were introduced in September 2013. With assistance by David Woodhouse.
1742 ----------------------------------------
1743 27 June 2014. Summary of changes for version 20140627:
1745 1) ACPICA kernel-resident subsystem:
1747 Formatted Output: Implemented local versions of standard formatted output
1748 utilities such as printf, etc. Over time, it has been discovered that
1749 there are in fact many portability issues with printf, and the addition
1750 of this feature will fix/prevent these issues once and for all. Some
1751 known issues are summarized below:
1753 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
1754 for the Linux kernel and is %uI64 for some MSVC versions.
1755 2) Invoking printf consistently in a manner that is portable across both
1756 32-bit and 64-bit platforms is difficult at best in many situations.
1757 3) The output format for pointers varies from system to system (leading
1758 zeros especially), and leads to inconsistent output from ACPICA across
1760 4) Certain platform-specific printf formats may conflict with ACPICA use.
1761 5) If there is no local C library available, ACPICA now has local support
1764 -- To address these printf issues in a complete manner, ACPICA now
1765 directly implements a small subset of printf format specifiers, only
1766 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
1768 Implemented support for ACPICA generation within the EFI environment.
1769 Initially, the AcpiDump utility is supported in the UEFI shell
1770 environment. Lv Zheng.
1772 Added a new external interface, AcpiLogError, to improve ACPICA
1773 portability. This allows the host to redirect error messages from the
1774 ACPICA utilities. Lv Zheng.
1776 Added and deployed new OSL file I/O interfaces to improve ACPICA
1784 There are C library implementations of these functions in the new file
1785 service_layers/oslibcfs.c -- however, the functions can be implemented by
1786 the local host in any way necessary. Lv Zheng.
1788 Implemented a mechanism to disable/enable ACPI table checksum validation
1789 at runtime. This can be useful when loading tables very early during OS
1790 initialization when it may not be possible to map the entire table in
1791 order to compute the checksum. Lv Zheng.
1793 Fixed a buffer allocation issue for the Generic Serial Bus support.
1794 Originally, a fixed buffer length was used. This change allows for
1795 variable-length buffers based upon the protocol indicated by the field
1796 access attributes. Reported by Lan Tianyu. Lv Zheng.
1798 Fixed a problem where an object detached from a namespace node was not
1799 properly terminated/cleared and could cause a circular list problem if
1800 reattached. ACPICA BZ 1063. David Box.
1802 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
1804 Fixed a possible memory leak in an error return path within the function
1805 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
1807 Example Code and Data Size: These are the sizes for the OS-independent
1808 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1809 debug version of the code includes the debug output trace mechanism and
1810 has a much larger code and data size.
1813 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1814 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1816 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1817 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1820 2) iASL Compiler/Disassembler and Tools:
1822 Disassembler: Add dump of ASCII equivalent text within a comment at the
1823 end of each line of the output for the Buffer() ASL operator.
1825 AcpiDump: Miscellaneous changes:
1826 Fixed repetitive table dump in -n mode.
1827 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
1828 the ACPI 2.0 GUID fails.
1830 iASL: Fixed a problem where the compiler could fault if incorrectly given
1831 an acpidump output file as input. ACPICA BZ 1088. David Box.
1833 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
1834 they are invoked without any arguments.
1836 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
1837 1086. Colin Ian King.
1839 Disassembler: Cleaned up a block of code that extracts a parent Op
1840 object. Added a comment that explains that the parent is guaranteed to be
1841 valid in this case. ACPICA BZ 1069.
1844 ----------------------------------------
1845 24 April 2014. Summary of changes for version 20140424:
1847 1) ACPICA kernel-resident subsystem:
1849 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
1850 Some of these tables are known to contain a trailing NULL entry. Lv
1853 Removed an extraneous error message for the case where there are a large
1854 number of system GPEs (> 124). This was the "32-bit FADT register is too
1855 long to convert to GAS struct" message, which is irrelevant for GPEs
1856 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
1857 (limited capacity) GAS bit length. Also, several changes to ensure proper
1858 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
1861 Implemented and deployed additional configuration support for the public
1862 ACPICA external interfaces. Entire classes of interfaces can now be
1863 easily modified or configured out, replaced by stubbed inline functions
1864 by default. Lv Zheng.
1866 Moved all public ACPICA runtime configuration globals to the public
1867 ACPICA external interface file for convenience. Also, removed some
1868 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
1870 Documentation: Added a new section to the ACPICA reference describing the
1871 maximum number of GPEs that can be supported by the FADT-defined GPEs in
1872 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
1875 Example Code and Data Size: These are the sizes for the OS-independent
1876 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1877 debug version of the code includes the debug output trace mechanism and
1878 has a much larger code and data size.
1881 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1882 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1884 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1885 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1888 2) iASL Compiler/Disassembler and Tools:
1890 iASL and disassembler: Add full support for the LPIT table (Low Power
1891 Idle Table). Includes support in the disassembler, data table compiler,
1892 and template generator.
1895 1) Add option to force the use of the RSDT (over the XSDT).
1896 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
1898 iASL: Add check for predefined packages that are too large. For
1899 predefined names that contain subpackages, check if each subpackage is
1900 too large. (Check for too small already exists.)
1902 Debugger: Updated the GPE command (which simulates a GPE by executing the
1903 GPE code paths in ACPICA). The GPE device is now optional, and defaults
1904 to the GPE 0/1 FADT-defined blocks.
1906 Unix application OSL: Update line-editing support. Add additional error
1907 checking and take care not to reset terminal attributes on exit if they
1908 were never set. This should help guarantee that the terminal is always
1909 left in the previous state on program exit.
1912 ----------------------------------------
1913 25 March 2014. Summary of changes for version 20140325:
1915 1) ACPICA kernel-resident subsystem:
1917 Updated the auto-serialize feature for control methods. This feature
1918 automatically serializes all methods that create named objects in order
1919 to prevent runtime errors. The update adds support to ignore the
1920 currently executing AML SyncLevel when invoking such a method, in order
1921 to prevent disruption of any existing SyncLevel priorities that may exist
1922 in the AML code. Although the use of SyncLevels is relatively rare, this
1923 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
1924 appear on some machines starting with the 20140214 release.
1926 Added a new external interface to allow the host to install ACPI tables
1927 very early, before the namespace is even created. AcpiInstallTable gives
1928 the host additional flexibility for ACPI table management. Tables can be
1929 installed directly by the host as if they had originally appeared in the
1930 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
1931 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
1932 with additional internal restructuring and cleanup. See the ACPICA
1933 Reference for interface details. Lv Zheng.
1935 Added validation of the checksum for all incoming dynamically loaded
1936 tables (via external interfaces or via AML Load/LoadTable operators). Lv
1939 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
1940 and GPE handler removal. Restructured calls to eliminate possible race
1941 conditions. Lv Zheng.
1943 Added a warning for the use/execution of the ASL/AML Unload (table)
1944 operator. This will help detect and identify machines that use this
1945 operator if and when it is ever used. This operator has never been seen
1946 in the field and the usage model and possible side-effects of the drastic
1947 runtime action of a full table removal are unknown.
1949 Reverted the use of #pragma push/pop which was introduced in the 20140214
1950 release. It appears that push and pop are not implemented by enough
1951 compilers to make the use of this feature feasible for ACPICA at this
1952 time. However, these operators may be deployed in a future ACPICA
1955 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
1958 Source code generation:
1959 1) Disabled the use of the "strchr" macro for the gcc-specific
1960 generation. For some versions of gcc, this macro can periodically expose
1961 a compiler bug which in turn causes compile-time error(s).
1962 2) Added support for PPC64 compilation. Colin Ian King.
1964 Example Code and Data Size: These are the sizes for the OS-independent
1965 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1966 debug version of the code includes the debug output trace mechanism and
1967 has a much larger code and data size.
1970 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1971 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1973 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1974 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1977 2) iASL Compiler/Disassembler and Tools:
1979 Disassembler: Added several new features to improve the readability of
1980 the resulting ASL code. Extra information is emitted within comment
1981 fields in the ASL code:
1982 1) Known _HID/_CID values are decoded to descriptive text.
1983 2) Standard values for the Notify() operator are decoded to descriptive
1985 3) Target operands are expanded to full pathnames (in a comment) when
1988 Disassembler: Miscellaneous updates for extern() handling:
1989 1) Abort compiler if file specified by -fe option does not exist.
1990 2) Silence unnecessary warnings about argument count mismatches.
1991 3) Update warning messages concerning unresolved method externals.
1992 4) Emit "UnknownObj" keyword for externals whose type cannot be
1996 1) Added the -a option to display both the ASL syntax and the AML
1997 encoding for an input ASL operator. This effectively displays all known
1998 information about an ASL operator with one AcpiHelp invocation.
1999 2) Added substring match support (similar to a wildcard) for the -i
2000 (_HID/PNP IDs) option.
2002 iASL/Disassembler: Since this tool does not yet support execution on big-
2003 endian machines, added detection of endianness and an error message if
2004 execution is attempted on big-endian. Support for big-endian within iASL
2005 is a feature that is on the ACPICA to-be-done list.
2008 1) Remove option to extract binary files from an acpidump; this function
2009 is made obsolete by the AcpiXtract utility.
2010 2) General cleanup of open files and allocated buffers.
2013 ----------------------------------------
2014 14 February 2014. Summary of changes for version 20140214:
2016 1) ACPICA kernel-resident subsystem:
2018 Implemented a new mechanism to proactively prevent problems with ill-
2019 behaved reentrant control methods that create named ACPI objects. This
2020 behavior is illegal as per the ACPI specification, but is nonetheless
2021 frequently seen in the field. Previously, this could lead to an
2022 AE_ALREADY_EXISTS exception if the method was actually entered by more
2023 than one thread. This new mechanism detects such methods at table load
2024 time and marks them "serialized" to prevent reentrancy. A new global
2025 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2026 feature if desired. This mechanism and global option obsoletes and
2027 supersedes the previous AcpiGbl_SerializeAllMethods option.
2029 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2030 respond TRUE to _OSI queries with this string. It is the stated policy of
2031 ACPICA to add new strings to the _OSI support as soon as possible after
2032 they are defined. See the full ACPICA _OSI policy which has been added to
2033 the utilities/utosi.c file.
2035 Hardened/updated the _PRT return value auto-repair code:
2036 1) Do not abort the repair on a single subpackage failure, continue to
2037 check all subpackages.
2038 2) Add check for the minimum subpackage length (4).
2039 3) Properly handle extraneous NULL package elements.
2041 Added support to avoid the possibility of infinite loops when traversing
2042 object linked lists. Never allow an infinite loop, even in the face of
2043 corrupted object lists.
2045 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2046 pack(pop) directives to ensure that the ACPICA headers are independent of
2047 compiler settings or other host headers.
2049 Example Code and Data Size: These are the sizes for the OS-independent
2050 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2051 debug version of the code includes the debug output trace mechanism and
2052 has a much larger code and data size.
2055 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2056 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2058 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2059 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2062 2) iASL Compiler/Disassembler and Tools:
2064 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2065 first reserved field was incorrectly forced to have a value of zero. This
2066 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2068 Debugger: Added missing support for the "Extra" and "Data" subobjects
2069 when displaying object data.
2071 Debugger: Added support to display entire object linked lists when
2072 displaying object data.
2074 iASL: Removed the obsolete -g option to obtain ACPI tables from the
2075 Windows registry. This feature has been superseded by the acpidump
2079 ----------------------------------------
2080 14 January 2014. Summary of changes for version 20140114:
2082 1) ACPICA kernel-resident subsystem:
2084 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2085 copyright to all module headers and signons, including the standard Linux
2086 header. This affects virtually every file in the ACPICA core subsystem,
2087 iASL compiler, all ACPICA utilities, and the test suites.
2089 Improved parameter validation for AcpiInstallGpeBlock. Added the
2091 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
2092 2) There is not already a GPE block attached to the device.
2093 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
2096 Correctly support "references" in the ACPI_OBJECT. This change fixes the
2097 support to allow references (namespace nodes) to be passed as arguments
2098 to control methods via the evaluate object interface. This is probably
2099 most useful for testing purposes, however.
2101 Improved support for 32/64 bit physical addresses in printf()-like
2102 output. This change improves the support for physical addresses in printf
2103 debug statements and other output on both 32-bit and 64-bit hosts. It
2104 consistently outputs the appropriate number of bytes for each host. The
2105 %p specifier is unsatisfactory since it does not emit uniform output on
2106 all hosts/clib implementations (on some, leading zeros are not supported,
2107 leading to difficult-to-read output).
2109 Example Code and Data Size: These are the sizes for the OS-independent
2110 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2111 debug version of the code includes the debug output trace mechanism and
2112 has a much larger code and data size.
2115 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2116 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2118 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2119 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2122 2) iASL Compiler/Disassembler and Tools:
2124 iASL: Fix a possible fault when using the Connection() operator. Fixes a
2125 problem if the parent Field definition for the Connection operator refers
2126 to an operation region that does not exist. ACPICA BZ 1064.
2128 AcpiExec: Load of local test tables is now optional. The utility has the
2129 capability to load some various tables to test features of ACPICA.
2130 However, there are enough of them that the output of the utility became
2131 confusing. With this change, only the required local tables are displayed
2132 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
2133 line specification. This makes the default output simler and easier to
2134 understand. The -el command line option restores the original behavior
2135 for testing purposes.
2137 AcpiExec: Added support for overlapping operation regions. This change
2138 expands the simulation of operation regions by supporting regions that
2139 overlap within the given address space. Supports SystemMemory and
2140 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
2142 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
2143 allows AcpiExec to simulate these address spaces, similar to the current
2144 support for SystemMemory and SystemIO.
2146 Debugger: Added new command to read/write/compare all namespace objects.
2147 The command "test objects" will exercise the entire namespace by writing
2148 new values to each data object, and ensuring that the write was
2149 successful. The original value is then restored and verified.
2151 Debugger: Added the "test predefined" command. This change makes this
2152 test public and puts it under the new "test" command. The test executes
2153 each and every predefined name within the current namespace.
2156 ----------------------------------------
2157 18 December 2013. Summary of changes for version 20131218:
2159 Global note: The ACPI 5.0A specification was released this month. There
2160 are no changes needed for ACPICA since this release of ACPI is an
2161 errata/clarification release. The specification is available at
2165 1) ACPICA kernel-resident subsystem:
2167 Added validation of the XSDT root table if it is present. Some older
2168 platforms contain an XSDT that is ill-formed or otherwise invalid (such
2169 as containing some or all entries that are NULL pointers). This change
2170 adds a new function to validate the XSDT before actually using it. If the
2171 XSDT is found to be invalid, ACPICA will now automatically fall back to
2172 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
2173 ACPICA and enhanced by Lv Zheng and Bob Moore.
2175 Added a runtime option to ignore the XSDT and force the use of the RSDT.
2176 This change adds a runtime option that will force ACPICA to use the RSDT
2177 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
2178 requires that an XSDT be used instead of the RSDT, the XSDT has been
2179 found to be corrupt or ill-formed on some machines. Lv Zheng.
2181 Added a runtime option to favor 32-bit FADT register addresses over the
2182 64-bit addresses. This change adds an option to favor 32-bit FADT
2183 addresses when there is a conflict between the 32-bit and 64-bit versions
2184 of the same register. The default behavior is to use the 64-bit version
2185 in accordance with the ACPI specification. This can now be overridden via
2186 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
2188 During the change above, the internal "Convert FADT" and "Verify FADT"
2189 functions have been merged to simplify the code, making it easier to
2190 understand and maintain. ACPICA BZ 933.
2192 Improve exception reporting and handling for GPE block installation.
2193 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
2194 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
2196 Added helper macros to extract bus/segment numbers from the HEST table.
2197 This change adds two macros to extract the encoded bus and segment
2198 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
2199 Betty Dall <betty.dall@hp.com>
2201 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
2202 by ACPICA. It is not a public macro, so it should have no effect on
2203 existing OSV code. Lv Zheng.
2205 Example Code and Data Size: These are the sizes for the OS-independent
2206 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2207 debug version of the code includes the debug output trace mechanism and
2208 has a much larger code and data size.
2211 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2212 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2214 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2215 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2218 2) iASL Compiler/Disassembler and Tools:
2220 Disassembler: Improved pathname support for emitted External()
2221 statements. This change adds full pathname support for external names
2222 that have been resolved internally by the inclusion of additional ACPI
2223 tables (via the iASL -e option). Without this change, the disassembler
2224 can emit multiple externals for the same object, or it become confused
2225 when the Scope() operator is used on an external object. Overall, greatly
2226 improves the ability to actually recompile the emitted ASL code when
2227 objects a referenced across multiple ACPI tables. Reported by Michael
2228 Tsirkin (mst@redhat.com).
2230 Tests/ASLTS: Updated functional control suite to execute with no errors.
2231 David Box. Fixed several errors related to the testing of the interpreter
2232 slack mode. Lv Zheng.
2234 iASL: Added support to detect names that are declared within a control
2235 method, but are unused (these are temporary names that are only valid
2236 during the time the method is executing). A remark is issued for these
2237 cases. ACPICA BZ 1022.
2239 iASL: Added full support for the DBG2 table. Adds full disassembler,
2240 table compiler, and template generator support for the DBG2 table (Debug
2243 iASL: Added full support for the PCCT table, update the table definition.
2244 Updates the PCCT table definition in the actbl3.h header and adds table
2245 compiler and template generator support.
2247 iASL: Added an option to emit only error messages (no warnings/remarks).
2248 The -ve option will enable only error messages, warnings and remarks are
2249 suppressed. This can simplify debugging when only the errors are
2250 important, such as when an ACPI table is disassembled and there are many
2251 warnings and remarks -- but only the actual errors are of real interest.
2253 Example ACPICA code (source/tools/examples): Updated the example code so
2254 that it builds to an actual working program, not just example code. Added
2255 ACPI tables and execution of an example control method in the DSDT. Added
2256 makefile support for Unix generation.
2259 ----------------------------------------
2260 15 November 2013. Summary of changes for version 20131115:
2262 This release is available at https://acpica.org/downloads
2265 1) ACPICA kernel-resident subsystem:
2267 Resource Manager: Fixed loop termination for the "get AML length"
2268 function. The loop previously had an error termination on a NULL resource
2269 pointer, which can never happen since the loop simply increments a valid
2270 resource pointer. This fix changes the loop to terminate with an error on
2271 an invalid end-of-buffer condition. The problem can be seen as an
2272 infinite loop by callers to AcpiSetCurrentResources with an invalid or
2273 corrupted resource descriptor, or a resource descriptor that is missing
2274 an END_TAG descriptor. Reported by Dan Carpenter
2275 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
2277 Table unload and ACPICA termination: Delete all attached data objects
2278 during namespace node deletion. This fix updates namespace node deletion
2279 to delete the entire list of attached objects (attached via
2280 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
2281 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
2283 ACPICA termination: Added support to delete all objects attached to the
2284 root namespace node. This fix deletes any and all objects that have been
2285 attached to the root node via AcpiAttachData. Previously, none of these
2286 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
2288 Debug output: Do not emit the function nesting level for the in-kernel
2289 build. The nesting level is really only useful during a single-thread
2290 execution. Therefore, only enable this output for the AcpiExec utility.
2291 Also, only emit the thread ID when executing under AcpiExec (Context
2292 switches are still always detected and a message is emitted). ACPICA BZ
2295 Example Code and Data Size: These are the sizes for the OS-independent
2296 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2297 debug version of the code includes the debug output trace mechanism and
2298 has a much larger code and data size.
2301 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2302 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2304 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2305 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2308 2) iASL Compiler/Disassembler and Tools:
2310 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
2311 correct portable POSIX header for terminal control functions.
2313 Disassembler: Fixed control method invocation issues related to the use
2314 of the CondRefOf() operator. The problem is seen in the disassembly where
2315 control method invocations may not be disassembled properly if the
2316 control method name has been used previously as an argument to CondRefOf.
2317 The solution is to not attempt to emit an external declaration for the
2318 CondRefOf target (it is not necessary in the first place). This prevents
2319 disassembler object type confusion. ACPICA BZ 988.
2321 Unix Makefiles: Added an option to disable compiler optimizations and the
2322 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
2323 with optimizations (reportedly, gcc 4.4 for example). This change adds a
2324 command line option for make (NOOPT) that disables all compiler
2325 optimizations and the _FORTIFY_SOURCE compiler flag. The default
2326 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
2327 1034. Lv Zheng, Bob Moore.
2329 Tests/ASLTS: Added options to specify individual test cases and modes.
2330 This allows testers running aslts.sh to optionally specify individual
2331 test modes and test cases. Also added an option to disable the forced
2332 generation of the ACPICA tools from source if desired. Lv Zheng.
2334 ----------------------------------------
2335 27 September 2013. Summary of changes for version 20130927:
2337 This release is available at https://acpica.org/downloads
2340 1) ACPICA kernel-resident subsystem:
2342 Fixed a problem with store operations to reference objects. This change
2343 fixes a problem where a Store operation to an ArgX object that contained
2345 reference to a field object did not complete the automatic dereference
2347 then write to the actual field object. Instead, the object type of the
2348 field object was inadvertently changed to match the type of the source
2349 operand. The new behavior will actually write to the field object (buffer
2350 field or field unit), thus matching the correct ACPI-defined behavior.
2352 Implemented support to allow the host to redefine individual OSL
2353 prototypes. This change enables the host to redefine OSL prototypes found
2354 in the acpiosxf.h file. This allows the host to implement OSL interfaces
2355 with a macro or inlined function. Further, it allows the host to add any
2356 additional required modifiers such as __iomem, __init, __exit, etc., as
2357 necessary on a per-interface basis. Enables maximum flexibility for the
2358 OSL interfaces. Lv Zheng.
2360 Hardcoded the access width for the FADT-defined reset register. The ACPI
2361 specification requires the reset register width to be 8 bits. ACPICA now
2362 hardcodes the width to 8 and ignores the FADT width value. This provides
2363 compatibility with other ACPI implementations that have allowed BIOS code
2364 with bad register width values to go unnoticed. Matthew Garett, Bob
2368 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
2370 in the OSL header (acpiosxf). The change modifies the position of this
2371 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
2372 build issues if the OSL defines the implementation of the interface to be
2373 an inline stub function. Lv Zheng.
2375 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
2376 initialization interfaces. This change adds a new macro for the main init
2377 and terminate external interfaces in order to support hosts that require
2378 additional or different processing for these functions. Changed from
2379 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
2382 Cleaned up the memory allocation macros for configurability. In the
2384 case, the ACPI_ALLOCATE and related macros now resolve directly to their
2385 respective AcpiOs* OSL interfaces. Two options:
2386 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
2387 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2388 2) For AcpiExec (and for debugging), the macros can optionally be
2390 to the local ACPICA interfaces that track each allocation (local tracking
2391 is used to immediately detect memory leaks).
2394 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
2395 to predefine this macro to either TRUE or FALSE during the system build.
2397 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
2399 Example Code and Data Size: These are the sizes for the OS-independent
2400 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2401 debug version of the code includes the debug output trace mechanism and
2402 has a much larger code and data size.
2405 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2406 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2408 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2409 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2412 2) iASL Compiler/Disassembler and Tools:
2414 iASL: Implemented wildcard support for the -e option. This simplifies use
2415 when there are many SSDTs that must be included to resolve external
2417 declarations. ACPICA BZ 1041. Example:
2418 iasl -e ssdt*.dat -d dsdt.dat
2420 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
2421 adds a portable module that implements full history and limited line
2422 editing for Unix and Linux systems. It does not use readline() due to
2423 portability issues. Instead it uses the POSIX termio interface to put the
2424 terminal in raw input mode so that the various special keys can be
2426 (such as up/down-arrow for history support and left/right-arrow for line
2427 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
2429 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
2430 one or more spaces. This provides compatible with early or different
2431 versions of the AcpiDump utility. ACPICA BZ 1044.
2433 AcpiDump: Do not ignore tables that contain only an ACPI table header.
2434 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
2435 no other data. This change adds support to dump these tables. Any tables
2436 shorter than the length of an ACPI table header remain in error (an error
2437 message is emitted). Reported by Yi Li.
2439 Debugger: Echo actual command along with the "unknown command" message.
2441 ----------------------------------------
2442 23 August 2013. Summary of changes for version 20130823:
2444 1) ACPICA kernel-resident subsystem:
2446 Implemented support for host-installed System Control Interrupt (SCI)
2447 handlers. Certain ACPI functionality requires the host to handle raw
2448 SCIs. For example, the "SCI Doorbell" that is defined for memory power
2449 state support requires the host device driver to handle SCIs to examine
2450 if the doorbell has been activated. Multiple SCI handlers can be
2451 installed to allow for future expansion. New external interfaces are
2452 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
2453 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
2455 Operation region support: Never locally free the handler "context"
2456 pointer. This change removes some dangerous code that attempts to free
2457 the handler context pointer in some (rare) circumstances. The owner of
2458 the handler owns this pointer and the ACPICA code should never touch it.
2459 Although not seen to be an issue in any kernel, it did show up as a
2460 problem (fault) under AcpiExec. Also, set the internal storage field for
2461 the context pointer to zero when the region is deactivated, simply for
2462 sanity. David Box. ACPICA BZ 1039.
2464 AcpiRead: On error, do not modify the return value target location. If an
2465 error happens in the middle of a split 32/32 64-bit I/O operation, do not
2466 modify the target of the return value pointer. Makes the code consistent
2467 with the rest of ACPICA. Bjorn Helgaas.
2469 Example Code and Data Size: These are the sizes for the OS-independent
2470 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2471 debug version of the code includes the debug output trace mechanism and
2472 has a much larger code and data size.
2475 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2476 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2478 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2479 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
2482 2) iASL Compiler/Disassembler and Tools:
2484 AcpiDump: Implemented several new features and fixed some problems:
2485 1) Added support to dump the RSDP, RSDT, and XSDT tables.
2486 2) Added support for multiple table instances (SSDT, UEFI).
2487 3) Added option to dump "customized" (overridden) tables (-c).
2488 4) Fixed a problem where some table filenames were improperly
2490 5) Improved some error messages, removed some unnecessary messages.
2492 iASL: Implemented additional support for disassembly of ACPI tables that
2493 contain invocations of external control methods. The -fe<file> option
2494 allows the import of a file that specifies the external methods along
2495 with the required number of arguments for each -- allowing for the
2496 correct disassembly of the table. This is a workaround for a limitation
2497 of AML code where the disassembler often cannot determine the number of
2498 arguments required for an external control method and generates incorrect
2499 ASL code. See the iASL reference for details. ACPICA BZ 1030.
2501 Debugger: Implemented a new command (paths) that displays the full
2502 pathnames (namepaths) and object types of all objects in the namespace.
2503 This is an alternative to the namespace command.
2505 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
2506 mechanism and any installed handlers.
2508 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
2509 This can occur if there are too many parent prefixes in a namepath (for
2510 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
2512 Application OSLs: Set the return value for the PCI read functions. These
2513 functions simply return AE_OK, but should set the return value to zero
2514 also. This change implements this. ACPICA BZ 1038.
2516 Debugger: Prevent possible command line buffer overflow. Increase the
2517 size of a couple of the debugger line buffers, and ensure that overflow
2518 cannot happen. ACPICA BZ 1037.
2520 iASL: Changed to abort immediately on serious errors during the parsing
2521 phase. Due to the nature of ASL, there is no point in attempting to
2522 compile these types of errors, and they typically end up causing a
2523 cascade of hundreds of errors which obscure the original problem.
2525 ----------------------------------------
2526 25 July 2013. Summary of changes for version 20130725:
2528 1) ACPICA kernel-resident subsystem:
2530 Fixed a problem with the DerefOf operator where references to FieldUnits
2531 and BufferFields incorrectly returned the parent object, not the actual
2532 value of the object. After this change, a dereference of a FieldUnit
2533 reference results in a read operation on the field to get the value, and
2534 likewise, the appropriate BufferField value is extracted from the target
2537 Fixed a problem where the _WAK method could cause a fault under these
2538 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
2539 method returned no value. The problem is rarely seen because most kernels
2540 run ACPICA in slack mode.
2542 For the DerefOf operator, a fatal error now results if an attempt is made
2543 to dereference a reference (created by the Index operator) to a NULL
2544 package element. Provides compatibility with other ACPI implementations,
2545 and this behavior will be added to a future version of the ACPI
2548 The ACPI Power Management Timer (defined in the FADT) is now optional.
2549 This provides compatibility with other ACPI implementations and will
2550 appear in the next version of the ACPI specification. If there is no PM
2551 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
2552 zero in the FADT indicates no PM timer.
2554 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
2555 allows the host to globally enable/disable all vendor strings, all
2556 feature strings, or both. Intended to be primarily used for debugging
2557 purposes only. Lv Zheng.
2559 Expose the collected _OSI data to the host via a global variable. This
2560 data tracks the highest level vendor ID that has been invoked by the BIOS
2561 so that the host (and potentially ACPICA itself) can change behaviors
2562 based upon the age of the BIOS.
2564 Example Code and Data Size: These are the sizes for the OS-independent
2565 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2566 debug version of the code includes the debug output trace mechanism and
2567 has a much larger code and data size.
2570 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2571 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2573 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2574 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2577 2) iASL Compiler/Disassembler and Tools:
2579 iASL: Created the following enhancements for the -so option (create
2581 1)Add offsets for the last nameseg in each namepath for every supported
2583 2)Add support for Processor, Device, Thermal Zone, and Scope objects
2584 3)Add the actual AML opcode for the parent object of every supported
2586 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
2588 Disassembler: Emit all unresolved external symbols in a single block.
2589 These are external references to control methods that could not be
2590 resolved, and thus, the disassembler had to make a guess at the number of
2593 iASL: The argument to the -T option (create table template) is now
2594 optional. If not specified, the default table is a DSDT, typically the
2597 ----------------------------------------
2598 26 June 2013. Summary of changes for version 20130626:
2600 1) ACPICA kernel-resident subsystem:
2602 Fixed an issue with runtime repair of the _CST object. Null or invalid
2603 elements were not always removed properly. Lv Zheng.
2605 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
2606 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
2607 the maximum number of GPEs is 1016. Use of multiple GPE block devices
2608 makes the system-wide number of GPEs essentially unlimited.
2610 Example Code and Data Size: These are the sizes for the OS-independent
2611 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2612 debug version of the code includes the debug output trace mechanism and
2613 has a much larger code and data size.
2616 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2617 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2619 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2620 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2623 2) iASL Compiler/Disassembler and Tools:
2625 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
2626 hosts. Now supports Linux, FreeBSD, and Windows.
2628 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
2629 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
2631 iASL/Preprocessor: Implemented full support for nested
2632 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
2634 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
2635 max. The original purpose of this constraint was to limit the amount of
2636 debug output. However, the string function in question (UtPrintString) is
2637 now used for the disassembler also, where 256 bytes is insufficient.
2638 Reported by RehabMan@GitHub.
2640 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
2641 tables. ACPICA BZ 999. Lv Zheng.
2643 iASL: Fixed a couple of error exit issues that could result in a "Could
2644 not delete <file>" message during ASL compilation.
2646 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
2647 the actual signatures for these tables are "FACP" and "APIC",
2650 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
2651 tables are allowed to have multiple instances.
2653 ----------------------------------------
2654 17 May 2013. Summary of changes for version 20130517:
2656 1) ACPICA kernel-resident subsystem:
2658 Fixed a regression introduced in version 20130328 for _INI methods. This
2659 change fixes a problem introduced in 20130328 where _INI methods are no
2660 longer executed properly because of a memory block that was not
2661 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
2662 <tomasz.nowicki@linaro.org>.
2664 Fixed a possible problem with the new extended sleep registers in the
2666 5.0 FADT. Do not use these registers (even if populated) unless the HW-
2667 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
2670 Implemented return value repair code for _CST predefined objects: Sort
2672 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
2674 Implemented a debug-only option to disable loading of SSDTs from the
2675 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
2676 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
2677 acglobal.h - ACPICA BZ 1005. Lv Zheng.
2679 Fixed some issues in the ACPICA initialization and termination code:
2680 Tomasz Nowicki <tomasz.nowicki@linaro.org>
2681 1) Clear events initialized flag upon event component termination. ACPICA
2683 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
2684 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
2685 4) Clear debug buffer global on termination to prevent possible multiple
2686 delete. ACPICA BZ 1010.
2688 Standardized all switch() blocks across the entire source base. After
2690 years, different formatting for switch() had crept in. This change makes
2691 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
2693 Split some files to enhance ACPICA modularity and configurability:
2694 1) Split buffer dump routines into utilities/utbuffer.c
2695 2) Split internal error message routines into utilities/uterror.c
2696 3) Split table print utilities into tables/tbprint.c
2697 4) Split iASL command-line option processing into asloptions.c
2699 Makefile enhancements:
2700 1) Support for all new files above.
2701 2) Abort make on errors from any subcomponent. Chao Guan.
2702 3) Add build support for Apple Mac OS X. Liang Qi.
2704 Example Code and Data Size: These are the sizes for the OS-independent
2705 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2706 debug version of the code includes the debug output trace mechanism and
2707 has a much larger code and data size.
2710 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2711 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2713 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2714 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2717 2) iASL Compiler/Disassembler and Tools:
2719 New utility: Implemented an easily portable version of the acpidump
2720 utility to extract ACPI tables from the system (or a file) in an ASCII
2722 dump format. The top-level code implements the various command line
2723 options, file I/O, and table dump routines. To port to a new host, only
2724 three functions need to be implemented to get tables -- since this
2725 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
2726 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
2727 1) The Windows version obtains the ACPI tables from the Registry.
2728 2) The Linux version is under development.
2729 3) Other hosts - If an OS-dependent module is submitted, it will be
2730 distributed with ACPICA.
2732 iASL: Fixed a regression for -D preprocessor option (define symbol). A
2733 restructuring/change to the initialization sequence caused this option to
2734 no longer work properly.
2736 iASL: Implemented a mechanism to disable specific warnings and remarks.
2737 Adds a new command line option, "-vw <messageid> as well as "#pragma
2738 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
2740 iASL: Fix for too-strict package object validation. The package object
2741 validation for return values from the predefined names is a bit too
2742 strict, it does not allow names references within the package (which will
2743 be resolved at runtime.) These types of references cannot be validated at
2744 compile time. This change ignores named references within package objects
2745 for names that return or define static packages.
2747 Debugger: Fixed the 80-character command line limitation for the History
2748 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
2750 iASL: Added control method and package support for the -so option
2751 (generates AML offset table for BIOS support.)
2753 iASL: issue a remark if a non-serialized method creates named objects. If
2754 a thread blocks within the method for any reason, and another thread
2755 enters the method, the method will fail because an attempt will be made
2757 create the same (named) object twice. In this case, issue a remark that
2758 the method should be marked serialized. NOTE: may become a warning later.
2761 ----------------------------------------
2762 18 April 2013. Summary of changes for version 20130418:
2764 1) ACPICA kernel-resident subsystem:
2766 Fixed a possible buffer overrun during some rare but specific field unit
2767 read operations. This overrun can only happen if the DSDT version is 1 --
2768 meaning that all AML integers are 32 bits -- and the field length is
2769 between 33 and 55 bits long. During the read, an internal buffer object
2771 created for the field unit because the field is larger than an integer
2773 bits). However, in this case, the buffer will be incorrectly written
2774 beyond the end because the buffer length is less than the internal
2776 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
2777 long, but a full 8 bytes will be written.
2779 Updated the Embedded Controller "orphan" _REG method support. This refers
2780 to _REG methods under the EC device that have no corresponding operation
2781 region. This is allowed by the ACPI specification. This update removes a
2782 dependency on the existence an ECDT table. It will execute an orphan _REG
2783 method as long as the operation region handler for the EC is installed at
2784 the EC device node and not the namespace root. Rui Zhang (original
2785 update), Bob Moore (update/integrate).
2787 Implemented run-time argument typechecking for all predefined ACPI names
2788 (_STA, _BIF, etc.) This change performs object typechecking on all
2789 incoming arguments for all predefined names executed via
2790 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
2791 passing correct object types as well as the correct number of arguments
2792 (therefore identifying any issues immediately). Also, the ASL/namespace
2793 definition of the predefined name is checked against the ACPI
2794 specification for the proper argument count. Adds one new file,
2797 Changed an exception code for the ASL UnLoad() operator. Changed the
2798 exception code for the case where the input DdbHandle is invalid, from
2799 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
2801 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
2802 global makefile. The use of this flag causes compiler errors on earlier
2803 versions of GCC, so it has been removed for compatibility.
2805 Miscellaneous cleanup:
2806 1) Removed some unused/obsolete macros
2807 2) Fixed a possible memory leak in the _OSI support
2808 3) Removed an unused variable in the predefined name support
2809 4) Windows OSL: remove obsolete reference to a memory list field
2811 Example Code and Data Size: These are the sizes for the OS-independent
2812 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2813 debug version of the code includes the debug output trace mechanism and
2814 has a much larger code and data size.
2817 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2818 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2820 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2821 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2824 2) iASL Compiler/Disassembler and Tools:
2826 AcpiExec: Added installation of a handler for the SystemCMOS address
2827 space. This prevents control method abort if a method accesses this
2830 AcpiExec: Added support for multiple EC devices, and now install EC
2831 operation region handler(s) at the actual EC device instead of the
2832 namespace root. This reflects the typical behavior of host operating
2835 AcpiExec: Updated to ensure that all operation region handlers are
2836 installed before the _REG methods are executed. This prevents a _REG
2837 method from aborting if it accesses an address space has no handler.
2838 AcpiExec installs a handler for every possible address space.
2840 Debugger: Enhanced the "handlers" command to display non-root handlers.
2841 This change enhances the handlers command to display handlers associated
2842 with individual devices throughout the namespace, in addition to the
2843 currently supported display of handlers associated with the root
2847 ASL Test Suite: Several test suite errors have been identified and
2848 resolved, reducing the total error count during execution. Chao Guan.
2850 ----------------------------------------
2851 28 March 2013. Summary of changes for version 20130328:
2853 1) ACPICA kernel-resident subsystem:
2855 Fixed several possible race conditions with the internal object reference
2856 counting mechanism. Some of the external ACPICA interfaces update object
2857 reference counts without holding the interpreter or namespace lock. This
2858 change adds a spinlock to protect reference count updates on the internal
2859 ACPICA objects. Reported by and with assistance from Andriy Gapon
2862 FADT support: Removed an extraneous warning for very large GPE register
2863 sets. This change removes a size mismatch warning if the legacy length
2864 field for a GPE register set is larger than the 64-bit GAS structure can
2865 accommodate. GPE register sets can be larger than the 255-bit width
2866 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
2868 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
2869 return from this interface. Handles a possible timeout case if
2870 ACPI_WAIT_FOREVER is modified by the host to be a value less than
2871 "forever". Jung-uk Kim.
2873 Predefined name support: Add allowed/required argument type information
2875 the master predefined info table. This change adds the infrastructure to
2876 enable typechecking on incoming arguments for all predefined
2877 methods/objects. It does not actually contain the code that will fully
2878 utilize this information, this is still under development. Also condenses
2879 some duplicate code for the predefined names into a new module,
2880 utilities/utpredef.c
2882 Example Code and Data Size: These are the sizes for the OS-independent
2883 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2884 debug version of the code includes the debug output trace mechanism and
2885 has a much larger code and data size.
2888 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2889 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2891 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2892 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2895 2) iASL Compiler/Disassembler and Tools:
2897 iASL: Implemented a new option to simplify the development of ACPI-
2899 BIOS code. Adds support for a new "offset table" output file. The -so
2900 option will create a C table containing the AML table offsets of various
2901 named objects in the namespace so that BIOS code can modify them easily
2903 boot time. This can simplify BIOS runtime code by eliminating expensive
2904 searches for "magic values", enhancing boot times and adding greater
2905 reliability. With assistance from Lee Hamel.
2907 iASL: Allow additional predefined names to return zero-length packages.
2908 Now, all predefined names that are defined by the ACPI specification to
2909 return a "variable-length package of packages" are allowed to return a
2910 zero length top-level package. This allows the BIOS to tell the host that
2911 the requested feature is not supported, and supports existing BIOS/ASL
2914 iASL: Changed the "result not used" warning to an error. This is the case
2915 where an ASL operator is effectively a NOOP because the result of the
2916 operation is not stored anywhere. For example:
2918 There is no target (missing 3rd argument), nor is the function return
2919 value used. This is potentially a very serious problem -- since the code
2920 was probably intended to do something, but for whatever reason, the value
2921 was not stored. Therefore, this issue has been upgraded from a warning to
2924 AcpiHelp: Added allowable/required argument types to the predefined names
2925 info display. This feature utilizes the recent update to the predefined
2926 names table (above).
2928 ----------------------------------------
2929 14 February 2013. Summary of changes for version 20130214:
2931 1) ACPICA Kernel-resident Subsystem:
2933 Fixed a possible regression on some hosts: Reinstated the safe return
2934 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
2935 evaluated only once. Although these macros are not needed for the ACPICA
2936 code itself, they are often used by ACPI-related host device drivers
2938 the safe feature may be necessary.
2940 Fixed several issues related to the ACPI 5.0 reduced hardware support
2941 (SOC): Now ensure that if the platform declares itself as hardware-
2943 via the FADT, the following functions become NOOPs (and always return
2944 AE_OK) because ACPI is always enabled by definition on these machines:
2950 Dynamic Object Repair: Implemented additional runtime repairs for
2951 predefined name return values. Both of these repairs can simplify code in
2952 the related device drivers that invoke these methods:
2953 1) For the _STR and _MLS names, automatically repair/convert an ASCII
2954 string to a Unicode buffer.
2955 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
2957 lone end tag descriptor in the following cases: A Return(0) was executed,
2958 a null buffer was returned, or no object at all was returned (non-slack
2959 mode only). Adds a new file, nsconvert.c
2960 ACPICA BZ 998. Bob Moore, Lv Zheng.
2962 Resource Manager: Added additional code to prevent possible infinite
2964 while traversing corrupted or ill-formed resource template buffers. Check
2965 for zero-length resource descriptors in all code that loops through
2966 resource templates (the length field is used to index through the
2967 template). This change also hardens the external AcpiWalkResources and
2968 AcpiWalkResourceBuffer interfaces.
2970 Local Cache Manager: Enhanced the main data structure to eliminate an
2971 unnecessary mechanism to access the next object in the list. Actually
2972 provides a small performance enhancement for hosts that use the local
2973 ACPICA cache manager. Jung-uk Kim.
2975 Example Code and Data Size: These are the sizes for the OS-independent
2976 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2977 debug version of the code includes the debug output trace mechanism and
2978 has a much larger code and data size.
2981 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2982 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2984 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2985 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2988 2) iASL Compiler/Disassembler and Tools:
2990 iASL/Disassembler: Fixed several issues with the definition of the ACPI
2991 5.0 RASF table (RAS Feature Table). This change incorporates late changes
2992 that were made to the ACPI 5.0 specification.
2994 iASL/Disassembler: Added full support for the following new ACPI tables:
2995 1) The MTMR table (MID Timer Table)
2996 2) The VRTC table (Virtual Real Time Clock Table).
2997 Includes header file, disassembler, table compiler, and template support
3000 iASL: Implemented compile-time validation of package objects returned by
3001 predefined names. This new feature validates static package objects
3002 returned by the various predefined names defined to return packages. Both
3003 object types and package lengths are validated, for both parent packages
3004 and sub-packages, if any. The code is similar in structure and behavior
3006 the runtime repair mechanism within the AML interpreter and uses the
3007 existing predefined name information table. Adds a new file, aslprepkg.c.
3010 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3011 This feature detects a binary file with a valid ACPI table header and
3012 invokes the disassembler automatically. Eliminates the need to
3013 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3015 iASL/Disassembler: Added several warnings for the case where there are
3016 unresolved control methods during the disassembly. This can potentially
3017 cause errors when the output file is compiled, because the disassembler
3018 assumes zero method arguments in these cases (it cannot determine the
3019 actual number of arguments without resolution/definition of the method).
3021 Debugger: Added support to display all resources with a single command.
3022 Invocation of the resources command with no arguments will now display
3024 resources within the current namespace.
3026 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3029 ----------------------------------------
3030 17 January 2013. Summary of changes for version 20130117:
3032 1) ACPICA Kernel-resident Subsystem:
3034 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3035 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3036 objects to return a package containing one integer, most BIOS code
3038 two integers and the previous code reflects that. However, we also need
3040 support BIOS code that actually implements to the ACPI spec, and this
3041 change reflects this.
3043 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3044 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3045 C compilers that require this support.
3046 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3047 ACPI_DEBUG is already used by many of the various hosts.
3049 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3050 copyright to all module headers and signons, including the standard Linux
3051 header. This affects virtually every file in the ACPICA core subsystem,
3052 iASL compiler, all ACPICA utilities, and the test suites.
3054 Example Code and Data Size: These are the sizes for the OS-independent
3055 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3056 debug version of the code includes the debug output trace mechanism and
3057 has a much larger code and data size.
3060 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3061 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3063 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3064 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3067 2) iASL Compiler/Disassembler and Tools:
3069 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3070 prevent a possible fault on some hosts. Some C libraries modify the arg
3071 pointer parameter to vfprintf making it difficult to call it twice in the
3072 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
3073 does not affect the Windows OSL since the Win C library does not modify
3074 the arg pointer. Chao Guan, Bob Moore.
3076 iASL: Fixed a possible infinite loop when the maximum error count is
3077 reached. If an output file other than the .AML file is specified (such as
3078 a listing file), and the maximum number of errors is reached, do not
3079 attempt to flush data to the output file(s) as the compiler is aborting.
3080 This can cause an infinite loop as the max error count code essentially
3081 keeps calling itself.
3083 iASL/Disassembler: Added an option (-in) to ignore NOOP
3085 Implemented for both the compiler and the disassembler. Often, the NOOP
3086 opcode is used as padding for packages that are changed dynamically by
3088 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
3089 errors. This option causes the disassembler to ignore all NOOP opcodes
3090 (0xA3), and it also causes the compiler to ignore all ASL source code
3094 Debugger: Enhanced the Sleep command to execute all sleep states. This
3095 change allows Sleep to be invoked with no arguments and causes the
3096 debugger to execute all of the sleep states, 0-5, automatically.
3098 ----------------------------------------
3099 20 December 2012. Summary of changes for version 20121220:
3101 1) ACPICA Kernel-resident Subsystem:
3103 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
3104 alternate entry point for AcpiWalkResources and improves the usability of
3105 the resource manager by accepting as input a buffer containing the output
3106 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
3107 input buffer is not deleted by this interface so that it can be used by
3108 the host later. See the ACPICA reference for details.
3110 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
3111 (DSDT version < 2). The constant will be truncated and this warning
3112 reflects that behavior.
3114 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
3115 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
3116 both get and set the new wake bit in these descriptors, separately from
3117 the existing share bit. Reported by Aaron Lu.
3119 Interpreter: Fix Store() when an implicit conversion is not possible. For
3120 example, in the cases such as a store of a string to an existing package
3121 object, implement the store as a CopyObject(). This is a small departure
3122 from the ACPI specification which states that the control method should
3124 aborted in this case. However, the ASLTS suite depends on this behavior.
3126 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
3127 macros: check if debug output is currently enabled as soon as possible to
3128 minimize performance impact if debug is in fact not enabled.
3130 Source code restructuring: Cleanup to improve modularity. The following
3131 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
3132 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
3133 Associated makefiles and project files have been updated.
3135 Changed an exception code for LoadTable operator. For the case where one
3136 of the input strings is too long, change the returned exception code from
3137 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
3139 Fixed a possible memory leak in dispatcher error path. On error, delete
3140 the mutex object created during method mutex creation. Reported by
3141 tim.gardner@canonical.com.
3143 Example Code and Data Size: These are the sizes for the OS-independent
3144 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3145 debug version of the code includes the debug output trace mechanism and
3146 has a much larger code and data size.
3149 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3150 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3152 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3153 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3156 2) iASL Compiler/Disassembler and Tools:
3158 iASL: Disallow a method call as argument to the ObjectType ASL operator.
3159 This change tracks an errata to the ACPI 5.0 document. The AML grammar
3160 will not allow the interpreter to differentiate between a method and a
3161 method invocation when these are used as an argument to the ObjectType
3162 operator. The ACPI specification change is to disallow a method
3164 (UserTerm) for the ObjectType operator.
3166 Finish support for the TPM2 and CSRT tables in the headers, table
3167 compiler, and disassembler.
3169 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
3170 always expires immediately if the semaphore is not available. The
3172 code was using a relative-time timeout, but sem_timedwait requires the
3174 of an absolute time.
3176 iASL: Added a remark if the Timer() operator is used within a 32-bit
3177 table. This operator returns a 64-bit time value that will be truncated
3178 within a 32-bit table.
3180 iASL Source code restructuring: Cleanup to improve modularity. The
3181 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
3182 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
3186 ----------------------------------------
3187 14 November 2012. Summary of changes for version 20121114:
3189 1) ACPICA Kernel-resident Subsystem:
3191 Implemented a performance enhancement for ACPI/AML Package objects. This
3192 change greatly increases the performance of Package objects within the
3193 interpreter. It changes the processing of reference counts for packages
3195 optimizing for the most common case where the package sub-objects are
3196 either Integers, Strings, or Buffers. Increases the overall performance
3198 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
3200 Chao Guan. ACPICA BZ 943.
3202 Implemented and deployed common macros to extract flag bits from resource
3203 descriptors. Improves readability and maintainability of the code. Fixes
3205 problem with the UART serial bus descriptor for the number of data bits
3206 flags (was incorrectly 2 bits, should be 3).
3208 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
3209 of the macros and changed the SETx macros to the style of (destination,
3210 source). Also added ACPI_CASTx companion macros. Lv Zheng.
3212 Example Code and Data Size: These are the sizes for the OS-independent
3213 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3214 debug version of the code includes the debug output trace mechanism and
3215 has a much larger code and data size.
3218 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3219 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3221 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3222 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3225 2) iASL Compiler/Disassembler and Tools:
3227 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
3228 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
3229 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
3231 Disassembler: Fixed a problem with external declaration generation. Fixes
3232 a problem where an incorrect pathname could be generated for an external
3233 declaration if the original reference to the object includes leading
3234 carats (^). ACPICA BZ 984.
3236 Debugger: Completed a major update for the Disassemble<method> command.
3237 This command was out-of-date and did not properly disassemble control
3238 methods that had any reasonable complexity. This fix brings the command
3240 to the same level as the rest of the disassembler. Adds one new file,
3241 dmdeferred.c, which is existing code that is now common with the main
3242 disassembler and the debugger disassemble command. ACPICA MZ 978.
3244 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
3245 Newer versions of Bison emit this prototype, so moved the prototype out
3247 the iASL header to where it is actually used in order to avoid a
3251 iASL/Tools: Standardized use of the stream I/O functions:
3252 1) Ensure check for I/O error after every fopen/fread/fwrite
3253 2) Ensure proper order of size/count arguments for fread/fwrite
3254 3) Use test of (Actual != Requested) after all fwrite, and most fread
3255 4) Standardize I/O error messages
3256 Improves reliability and maintainability of the code. Bob Moore, Lv
3260 Disassembler: Prevent duplicate External() statements. During generation
3261 of external statements, detect similar pathnames that are actually
3262 duplicates such as these:
3265 Remove all leading '\' characters from pathnames during the external
3266 statement generation so that duplicates will be detected and tossed.
3269 Tools: Replace low-level I/O with stream I/O functions. Replace
3270 open/read/write/close with the stream I/O equivalents
3271 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
3274 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
3275 name header so that AcpiXtract recognizes the output file/table.
3277 iASL: Remove obsolete -2 option flag. Originally intended to force the
3278 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
3279 and the entire concept is now obsolete.
3281 ----------------------------------------
3282 18 October 2012. Summary of changes for version 20121018:
3285 1) ACPICA Kernel-resident Subsystem:
3287 Updated support for the ACPI 5.0 MPST table. Fixes some problems
3288 introduced by late changes to the table as it was added to the ACPI 5.0
3289 specification. Includes header, disassembler, and data table compiler
3290 support as well as a new version of the MPST template.
3292 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
3293 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
3294 methods: _HID, _CID, and _UID.
3296 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
3297 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
3298 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
3299 names for their various drivers. Affects the AcpiGetObjectInfo external
3300 interface, and other internal interfaces as well.
3302 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
3303 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
3304 on machines that support non-aligned transfers. Optimizes for this case
3305 rather than using a strncpy. With assistance from Zheng Lv.
3307 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
3308 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
3310 Added a new debug print message for AML mutex objects that are force-
3311 released. At control method termination, any currently acquired mutex
3312 objects are force-released. Adds a new debug-only message for each one
3315 Audited/updated all ACPICA return macros and the function debug depth
3316 counter: 1) Ensure that all functions that use the various TRACE macros
3317 also use the appropriate ACPICA return macros. 2) Ensure that all normal
3318 return statements surround the return expression (value) with parens to
3319 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
3320 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
3322 Global source code changes/maintenance: All extra lines at the start and
3323 end of each source file have been removed for consistency. Also, within
3324 comments, all new sentences start with a single space instead of a double
3325 space, again for consistency across the code base.
3327 Example Code and Data Size: These are the sizes for the OS-independent
3328 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3329 debug version of the code includes the debug output trace mechanism and
3330 has a much larger code and data size.
3333 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3334 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3336 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3337 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3340 2) iASL Compiler/Disassembler and Tools:
3342 AcpiExec: Improved the algorithm used for memory leak/corruption
3343 detection. Added some intelligence to the code that maintains the global
3344 list of allocated memory. The list is now ordered by allocated memory
3345 address, significantly improving performance. When running AcpiExec on
3346 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
3347 on the platform and/or the environment. Note, this performance
3348 enhancement affects the AcpiExec utility only, not the kernel-resident
3351 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
3352 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
3353 incorrect table offset reported for invalid opcodes. Report the original
3354 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
3356 Disassembler: Enhanced the -vt option to emit the binary table data in
3357 hex format to assist with debugging.
3359 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
3360 size of file structure. Colin Ian King.
3362 ----------------------------------------
3363 13 September 2012. Summary of changes for version 20120913:
3366 1) ACPICA Kernel-resident Subsystem:
3368 ACPI 5.0: Added two new notify types for the Hardware Error Notification
3369 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
3373 Table Manager: Merged/removed duplicate code in the root table resize
3374 functions. One function is external, the other is internal. Lv Zheng,
3378 Makefiles: Completely removed the obsolete "Linux" makefiles under
3379 acpica/generate/linux. These makefiles are obsolete and have been
3382 the generic unix makefiles under acpica/generate/unix.
3384 Makefiles: Ensure that binary files always copied properly. Minor rule
3386 to ensure that the final binary output files are always copied up to the
3387 appropriate binary directory (bin32 or bin64.)
3389 Example Code and Data Size: These are the sizes for the OS-independent
3390 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3392 version of the code includes the debug output trace mechanism and has a
3394 larger code and data size.
3397 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3398 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3400 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3401 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3404 2) iASL Compiler/Disassembler and Tools:
3406 Disassembler: Fixed a possible fault during the disassembly of resource
3407 descriptors when a second parse is required because of the invocation of
3408 external control methods within the table. With assistance from
3409 adq@lidskialf.net. ACPICA BZ 976.
3411 iASL: Fixed a namepath optimization problem. An error can occur if the
3413 node that contains the namepath to be optimized does not have a parent
3415 that is a named object. This change fixes the problem.
3417 iASL: Fixed a regression where the AML file is not deleted on errors. The
3419 output file should be deleted if there are any errors during the
3422 only exception is if the -f (force output) option is used. ACPICA BZ 974.
3424 iASL: Added a feature to automatically increase internal line buffer
3426 Via realloc(), automatically increase the internal line buffer sizes as
3427 necessary to support very long source code lines. The current version of
3429 preprocessor requires a buffer long enough to contain full source code
3431 This change increases the line buffer(s) if the input lines go beyond the
3432 current buffer size. This eliminates errors that occurred when a source
3434 line was longer than the buffer.
3436 iASL: Fixed a problem with constant folding in method declarations. The
3437 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
3439 Type3 opcode was used.
3441 Debugger: Improved command help support. For incorrect argument count,
3443 full help for the command. For help command itself, allow an argument to
3446 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
3447 errors during execution of the suite. Guan Chao.
3449 ----------------------------------------
3450 16 August 2012. Summary of changes for version 20120816:
3453 1) ACPICA Kernel-resident Subsystem:
3455 Removed all use of the deprecated _GTS and _BFS predefined methods. The
3457 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
3458 deprecated and will probably be removed from the ACPI specification.
3460 does not invoke them, and reportedly never will. The final nail in the
3462 is that the ACPI specification states that these methods must be run with
3463 interrupts off, which is not going to happen in a kernel interpreter.
3465 Linux has removed all use of the methods also. It was discovered that
3466 invoking these functions caused failures on some machines, probably
3468 they were never tested since Windows does not call them. Affects two
3470 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
3473 Implemented support for complex bit-packed buffers returned from the _PLD
3474 (Physical Location of Device) predefined method. Adds a new external
3475 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
3477 structure. Note: C Bitfields cannot be used for this type of predefined
3478 structure since the memory layout of individual bitfields is not defined
3480 the C language. In addition, there are endian concerns where a compiler
3482 change the bitfield ordering based on the machine type. The new ACPICA
3483 interface eliminates these issues, and should be called after _PLD is
3484 executed. ACPICA BZ 954.
3486 Implemented a change to allow a scope change to root (via "Scope (\)")
3488 execution of module-level ASL code (code that is executed at table load
3491 Added the Windows8/Server2012 string for the _OSI method. This change
3494 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
3497 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
3499 and CSRT (Core System Resource Table).
3501 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
3502 names. This simplifies access to the buffers returned by these predefined
3503 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
3505 GPE support: Removed an extraneous parameter from the various low-level
3506 internal GPE functions. Tang Feng.
3508 Removed the linux makefiles from the unix packages. The generate/linux
3509 makefiles are obsolete and have been removed from the unix tarball
3511 packages. The replacement makefiles are under generate/unix, and there is
3513 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
3515 Updates for Unix makefiles:
3516 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
3517 2) Update linker flags (move to end of command line) for AcpiExec
3521 Split ACPICA initialization functions to new file, utxfinit.c. Split from
3522 utxface.c to improve modularity and reduce file size.
3524 Example Code and Data Size: These are the sizes for the OS-independent
3525 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3526 debug version of the code includes the debug output trace mechanism and
3528 much larger code and data size.
3531 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3532 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3534 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3535 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3538 2) iASL Compiler/Disassembler and Tools:
3540 iASL: Fixed a problem with constant folding for fixed-length constant
3541 expressions. The constant-folding code was not being invoked for constant
3542 expressions that allow the use of type 3/4/5 opcodes to generate
3544 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
3546 in the generation of invalid AML bytecode. ACPICA BZ 970.
3548 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
3549 apparently automatically emit some of the necessary externals. This
3551 handles these versions in order to eliminate generation warnings.
3553 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
3555 Disassembler: Add support to decode _PLD buffers. The decoded buffer
3557 within comments in the output file.
3559 Debugger: Fixed a regression with the "Threads" command where
3560 AE_BAD_PARAMETER was always returned.
3562 ----------------------------------------
3563 11 July 2012. Summary of changes for version 20120711:
3565 1) ACPICA Kernel-resident Subsystem:
3567 Fixed a possible fault in the return package object repair code. Fixes a
3568 problem that can occur when a lone package object is wrapped with an
3570 package object in order to force conformance to the ACPI specification.
3572 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
3576 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
3577 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
3578 ARB_DIS bit must be implemented in the host-dependent C3 processor power
3580 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
3582 Intel and other vendors. (for Intel: ICH4-M and earlier)
3584 This change removes the code to disable/enable bus master arbitration
3586 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
3588 resume problems on some machines. The change has been in use for over
3592 Implemented two new external interfaces to support host-directed dynamic
3594 table load and unload. They are intended to simplify the host
3596 of hot-plug support:
3597 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
3598 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
3600 See the ACPICA reference for additional details. Adds one new file,
3601 components/tables/tbxfload.c
3603 Implemented and deployed two new interfaces for errors and warnings that
3605 known to be caused by BIOS/firmware issues:
3606 AcpiBiosError: Prints "ACPI Firmware Error" message.
3607 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
3608 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
3610 and FADT errors. Additional deployment to be completed as appropriate in
3612 future. The associated conditional macros are ACPI_BIOS_ERROR and
3613 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
3618 Implicit notify support: ensure that no memory allocation occurs within a
3619 critical region. This fix moves a memory allocation outside of the time
3621 spinlock is held. Fixes issues on systems that do not allow this
3625 Split exception code utilities and tables into a new file,
3628 Example Code and Data Size: These are the sizes for the OS-independent
3629 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3631 version of the code includes the debug output trace mechanism and has a
3633 larger code and data size.
3636 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3637 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3639 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3640 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3643 2) iASL Compiler/Disassembler and Tools:
3645 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
3649 Debugger: Enhanced the "tables" command to emit additional information
3651 the current set of ACPI tables, including the owner ID and flags decode.
3653 Debugger: Reimplemented the "unload" command to use the new
3654 AcpiUnloadParentTable external interface. This command was disable
3656 due to need for an unload interface.
3658 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
3660 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
3662 ----------------------------------------
3663 20 June 2012. Summary of changes for version 20120620:
3666 1) ACPICA Kernel-resident Subsystem:
3668 Implemented support to expand the "implicit notify" feature to allow
3670 devices to be notified by a single GPE. This feature automatically
3672 runtime device notification in the absence of a BIOS-provided GPE control
3673 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
3675 provided by ACPICA for Windows compatibility, and is a workaround for
3678 code errors. See the description of the AcpiSetupGpeForWake interface in
3680 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
3682 Changed some comments and internal function names to simplify and ensure
3683 correctness of the Linux code translation. No functional changes.
3685 Example Code and Data Size: These are the sizes for the OS-independent
3686 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3688 version of the code includes the debug output trace mechanism and has a
3690 larger code and data size.
3693 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3694 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3696 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3697 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3700 2) iASL Compiler/Disassembler and Tools:
3702 Disassembler: Added support to emit short, commented descriptions for the
3704 predefined names in order to improve the readability of the disassembled
3705 output. ACPICA BZ 959. Changes include:
3706 1) Emit descriptions for all standard predefined names (_INI, _STA,
3709 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
3710 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
3713 AcpiSrc: Fixed several long-standing Linux code translation issues.
3715 descriptions in function headers are now translated properly to lower
3718 underscores. ACPICA BZ 961. Also fixes translation problems such as
3724 local_fADT -> local_FADT
3725 execute_oSI -> execute_OSI
3727 iASL: Fixed a problem where null bytes were inadvertently emitted into
3731 iASL: Added the existing debug options to the standard help screen. There
3733 no longer two different help screens. ACPICA BZ 957.
3735 AcpiHelp: Fixed some typos in the various predefined name descriptions.
3737 expand some of the descriptions where appropriate.
3739 iASL: Fixed the -ot option (display compile times/statistics). Was not
3741 properly for standard output; only worked for the debug file case.
3743 ----------------------------------------
3744 18 May 2012. Summary of changes for version 20120518:
3747 1) ACPICA Core Subsystem:
3749 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
3751 to block until asynchronous events such as notifies and GPEs have
3753 Within ACPICA, it is only called before a notify or GPE handler is
3754 removed/uninstalled. It also may be useful for the host OS within related
3755 drivers such as the Embedded Controller driver. See the ACPICA reference
3757 additional information. ACPICA BZ 868.
3759 ACPI Tables: Added a new error message for a possible overflow failure
3761 the conversion of FADT 32-bit legacy register addresses to internal
3764 bit GAS structure representation. The GAS has a one-byte "bit length"
3766 thus limiting the register length to 255 bits. ACPICA BZ 953.
3768 Example Code and Data Size: These are the sizes for the OS-independent
3769 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3771 version of the code includes the debug output trace mechanism and has a
3773 larger code and data size.
3776 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3777 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3779 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3780 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3783 2) iASL Compiler/Disassembler and Tools:
3785 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
3787 This keyword was added late in the ACPI 5.0 release cycle and was not
3788 implemented until now.
3790 Disassembler: Added support for Operation Region externals. Adds missing
3791 support for operation regions that are defined in another table, and
3792 referenced locally via a Field or BankField ASL operator. Now generates
3794 correct External statement.
3796 Disassembler: Several additional fixes for the External() statement
3798 related to some ASL operators. Also, order the External() statements
3799 alphabetically in the disassembler output. Fixes the External()
3802 the Create* field, Alias, and Scope operators:
3803 1) Create* buffer field operators - fix type mismatch warning on
3805 2) Alias - implement missing External support
3806 3) Scope - fix to make sure all necessary externals are emitted.
3808 iASL: Improved pathname support. For include files, merge the prefix
3810 with the file pathname and eliminate unnecessary components. Convert
3811 backslashes in all pathnames to forward slashes, for readability. Include
3813 pathname changes affect both #include and Include() type operators.
3815 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
3817 of a valid line by inserting a newline and then returning the EOF during
3819 next call to GetNextLine. Prevents the line from being ignored due to EOF
3822 iASL: Implemented some changes to enhance the IDE support (-vi option.)
3824 and Warning messages are now correctly recognized for both the source
3826 browser and the global error and warning counts.
3828 ----------------------------------------
3829 20 April 2012. Summary of changes for version 20120420:
3832 1) ACPICA Core Subsystem:
3834 Implemented support for multiple notify handlers. This change adds
3837 allow multiple system and device notify handlers on Device, Thermal Zone,
3839 Processor objects. This can simplify the host OS notification
3841 Also re-worked and restructured the entire notify support code to
3843 handler installation, handler removal, notify event queuing, and notify
3844 dispatch to handler(s). Note: there can still only be two global notify
3845 handlers - one for system notifies and one for device notifies. There are
3847 changes to the existing handler install/remove interfaces. Lin Ming, Bob
3848 Moore, Rafael Wysocki.
3850 Fixed a regression in the package repair code where the object reference
3851 count was calculated incorrectly. Regression was introduced in the commit
3852 "Support to add Package wrappers".
3854 Fixed a couple possible memory leaks in the AML parser, in the error
3856 path. Jesper Juhl, Lin Ming.
3858 Example Code and Data Size: These are the sizes for the OS-independent
3859 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3860 debug version of the code includes the debug output trace mechanism and
3862 much larger code and data size.
3865 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3866 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3868 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3869 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3872 2) iASL Compiler/Disassembler and Tools:
3874 iASL: Fixed a problem with the resource descriptor support where the
3876 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
3877 included in cumulative descriptor offset, resulting in incorrect values
3879 resource tags within resource descriptors appearing after a
3881 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
3883 iASL and Preprocessor: Implemented full support for the #line directive
3885 correctly track original source file line numbers through the .i
3887 output file - for error and warning messages.
3889 iASL: Expand the allowable byte constants for address space IDs.
3891 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
3892 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
3894 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
3896 iASL: Add option to completely disable the preprocessor (-Pn).
3898 iASL: Now emit all error/warning messages to standard error (stderr) by
3899 default (instead of the previous stdout).
3901 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
3903 for resource descriptor offset fix above. Update/cleanup error output
3904 routines. Enable and send iASL errors/warnings to an error logfile
3905 (error.txt). Send all other iASL output to a logfile (compiler.txt).
3907 several extraneous "unrecognized operator" messages.
3909 ----------------------------------------
3910 20 March 2012. Summary of changes for version 20120320:
3913 1) ACPICA Core Subsystem:
3915 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
3916 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
3918 does not execute these methods, and therefore these methods are often
3919 untested. It has been seen on some systems where the execution of these
3920 methods causes errors and also prevents the machine from entering S5. It
3922 therefore suggested that host operating systems do not execute these
3924 by default. In the future, perhaps these methods can be optionally
3926 based on the age of the system and/or what is the newest version of
3928 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
3930 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
3933 Fixed a problem where the length of the local/common FADT was set too
3935 The local FADT table length cannot be set to the common length until the
3936 original length has been examined. There is code that checks the table
3938 and sets various fields appropriately. This can affect older machines
3940 early FADT versions. For example, this can cause inadvertent writes to
3942 CST_CNT register. Julian Anastasov.
3944 Fixed a mapping issue related to a physical table override. Use the
3946 mapping mechanism for tables loaded via the physical override OSL
3948 This allows for early mapping before the virtual memory manager is
3950 Thomas Renninger, Bob Moore.
3952 Enhanced the automatic return-object repair code: Repair a common problem
3954 predefined methods that are defined to return a variable-length Package
3956 sub-objects. If there is only one sub-object, some BIOS ASL code
3958 simply returns the single object instead of a Package with one sub-
3960 This new support will repair this error by wrapping a Package object
3962 the original object, creating the correct and expected Package with one
3964 object. Names that can be repaired in this manner include: _ALR, _CSD,
3966 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
3969 Changed the exception code returned for invalid ACPI paths passed as
3970 parameters to external interfaces such as AcpiEvaluateObject. Was
3971 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
3973 Example Code and Data Size: These are the sizes for the OS-independent
3974 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3976 version of the code includes the debug output trace mechanism and has a
3978 larger code and data size.
3981 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3982 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3984 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3985 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3988 2) iASL Compiler/Disassembler and Tools:
3990 iASL: Added the infrastructure and initial implementation of a integrated
3992 like preprocessor. This will simplify BIOS development process by
3994 the need for a separate preprocessing step during builds. On Windows, it
3996 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
3997 features including full #define() macro support are still under
3999 These preprocessor directives are supported:
4012 In addition, these new command line options are supported:
4013 -D <symbol> Define symbol for preprocessor use
4014 -li Create preprocessed output file (*.i)
4015 -P Preprocess only and create preprocessor output file (*.i)
4017 Table Compiler: Fixed a problem where the equals operator within an
4019 did not work properly.
4021 Updated iASL to use the current versions of Bison/Flex. Updated the
4023 project file to invoke these tools from the standard location. ACPICA BZ
4026 Flex for Windows: V2.5.4
4027 Bison for Windows: V2.4.1
4029 ----------------------------------------
4030 15 February 2012. Summary of changes for version 20120215:
4033 1) ACPICA Core Subsystem:
4035 There have been some major changes to the sleep/wake support code, as
4036 described below (a - e).
4038 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4039 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4040 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4042 time the _BFS method is called and the _WAK method is called. NOTE: all
4044 must update their wake/resume code or else sleep/wake will not work
4048 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4050 method. Some machines require that the GPEs are enabled before the _WAK
4052 is executed. Thomas Renninger.
4054 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4056 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4058 determine whether the system is rebooting or resuming. Matthew Garrett.
4060 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4062 match the ACPI specification requirement. Rafael Wysocki.
4064 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4065 registers within the V5 FADT. This support adds two new files:
4066 hardware/hwesleep.c implements the support for the new registers. Moved
4068 sleep/wake external interfaces to hardware/hwxfsleep.c.
4071 Added a new OSL interface for ACPI table overrides,
4072 AcpiOsPhysicalTableOverride. This interface allows the host to override a
4073 table via a physical address, instead of the logical address required by
4074 AcpiOsTableOverride. This simplifies the host implementation. Initial
4075 implementation by Thomas Renninger. The ACPICA implementation creates a
4077 shared function for table overrides that attempts both a logical and a
4080 Expanded the OSL memory read/write interfaces to 64-bit data
4081 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
4082 transfer support for GAS register structures passed to AcpiRead and
4085 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
4087 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
4089 See the ACPICA reference for details. ACPICA BZ 942. This option removes
4091 10% of the code and 5% of the static data, and the following hardware
4093 features become unavailable:
4094 PM Event and Control registers
4095 SCI interrupt (and handler)
4097 General Purpose Events (GPEs)
4100 FACS table (Waking vectors and Global Lock)
4102 Updated the unix tarball directory structure to match the ACPICA git
4104 tree. This ensures that the generic unix makefiles work properly (in
4105 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
4108 Updated the return value of the _REV predefined method to integer value 5
4110 reflect ACPI 5.0 support.
4112 Moved the external ACPI PM timer interface prototypes to the public
4114 file where they belong.
4116 Example Code and Data Size: These are the sizes for the OS-independent
4117 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4119 version of the code includes the debug output trace mechanism and has a
4121 larger code and data size.
4124 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4125 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4127 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4128 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4131 2) iASL Compiler/Disassembler and Tools:
4133 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
4134 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
4135 incorrectly displayed.
4137 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
4140 ----------------------------------------
4141 11 January 2012. Summary of changes for version 20120111:
4144 1) ACPICA Core Subsystem:
4146 Implemented a new mechanism to allow host device drivers to check for
4148 range conflicts with ACPI Operation Regions. Both SystemMemory and
4150 address spaces are supported. A new external interface,
4151 AcpiCheckAddressRange,
4152 allows drivers to check an address range against the ACPI namespace. See
4154 ACPICA reference for additional details. Adds one new file,
4155 utilities/utaddress.c. Lin Ming, Bob Moore.
4157 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
4160 Status registers, update the ACPI 5.0 flags, and update internal data
4161 structures to handle an FADT larger than 256 bytes. The size of the ACPI
4165 Updated all ACPICA copyrights and signons to 2012. Added the 2012
4167 all module headers and signons, including the standard Linux header. This
4168 affects virtually every file in the ACPICA core subsystem, iASL compiler,
4170 all ACPICA utilities.
4172 Example Code and Data Size: These are the sizes for the OS-independent
4173 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4175 version of the code includes the debug output trace mechanism and has a
4177 larger code and data size.
4180 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4181 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4183 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4184 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4187 2) iASL Compiler/Disassembler and Tools:
4189 Disassembler: fixed a problem with the automatic resource tag generation
4190 support. Fixes a problem where the resource tags are inadvertently not
4191 constructed if the table being disassembled contains external references
4193 control methods. Moved the actual construction of the tags to after the
4195 namespace is constructed (after 2nd parse is invoked due to external
4197 method references.) ACPICA BZ 941.
4199 Table Compiler: Make all "generic" operators caseless. These are the
4201 like UINT8, String, etc. Making these caseless improves ease-of-use.
4205 ----------------------------------------
4206 23 November 2011. Summary of changes for version 20111123:
4208 0) ACPI 5.0 Support:
4210 This release contains full support for the ACPI 5.0 specification, as
4213 Reduced Hardware Support:
4214 -------------------------
4216 This support allows for ACPI systems without the usual ACPI hardware.
4218 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
4220 not attempt to initialize or use any of the usual ACPI hardware. Note,
4222 this flag is set, all of the following ACPI hardware is assumed to be not
4223 present and is not initialized or accessed:
4225 General Purpose Events (GPEs)
4226 Fixed Events (PM1a/PM1b and PM Control)
4227 Power Management Timer and Console Buttons (power/sleep)
4228 Real-time Clock Alarm
4230 System Control Interrupt (SCI)
4231 The FACS is assumed to be non-existent
4236 All new tables and updates to existing tables are fully supported in the
4237 ACPICA headers (for use by device drivers), the disassembler, and the
4239 Data Table Compiler. ACPI 5.0 defines these new tables:
4241 BGRT /* Boot Graphics Resource Table */
4242 DRTM /* Dynamic Root of Trust for Measurement table */
4243 FPDT /* Firmware Performance Data Table */
4244 GTDT /* Generic Timer Description Table */
4245 MPST /* Memory Power State Table */
4246 PCCT /* Platform Communications Channel Table */
4247 PMTT /* Platform Memory Topology Table */
4248 RASF /* RAS Feature table */
4250 Operation Regions/SpaceIDs:
4251 ---------------------------
4253 All new operation regions are fully supported by the iASL compiler, the
4254 disassembler, and the ACPICA runtime code (for dispatch to region
4256 The new operation region Space IDs are:
4261 Resource Descriptors:
4262 ---------------------
4264 All new ASL resource descriptors are fully supported by the iASL
4267 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
4269 all new predefined resource tags). New descriptors are:
4278 ASL/AML Operators, New and Modified:
4279 ------------------------------------
4281 One new operator is added, the Connection operator, which is used to
4283 a GeneralPurposeIo or GenericSerialBus resource descriptor with
4285 field objects within an operation region. Several new protocols are
4287 with the AccessAs operator. All are fully supported by the iASL compiler,
4288 disassembler, and runtime ACPICA AML interpreter:
4290 Connection // Declare Field Connection
4292 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
4293 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
4295 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
4296 RawDataBuffer // Data type for Vendor Data
4299 Predefined ASL/AML Objects:
4300 ---------------------------
4302 All new predefined objects/control-methods are supported by the iASL
4304 and the ACPICA runtime validation/repair (arguments and return values.)
4306 predefined names include the following:
4308 Standard Predefined Names (Objects or Control Methods):
4309 _AEI, _CLS, _CPC, _CWS, _DEP,
4310 _DLM, _EVT, _GCP, _CRT, _GWS,
4311 _HRV, _PRE, _PSE, _SRT, _SUB.
4313 Resource Tags (Names used to access individual fields within resource
4315 _DBT, _DPL, _DRS, _END, _FLC,
4316 _IOR, _LIN, _MOD, _PAR, _PHA,
4317 _PIN, _PPI, _POL, _RXL, _SLV,
4318 _SPE, _STB, _TXL, _VEN.
4320 ACPICA External Interfaces:
4321 ---------------------------
4323 Several new interfaces have been defined for use by ACPI-related device
4324 drivers and other host OS services:
4326 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
4328 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
4329 provided by the BIOS. They are intended to be used in conjunction with
4331 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
4332 mutual exclusion with the AML code/interpreter.
4334 AcpiGetEventResources: Returns the (formatted) resource descriptors as
4336 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
4338 resource descriptors associated with hardware-reduced platform events,
4340 to the AcpiGetCurrentResources interface.
4342 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
4343 operation regions, information about the Connection() object and any
4345 length information is passed to the region handler within the Context
4348 AcpiBufferToResource: This interface converts a raw AML buffer containing
4350 resource template or resource descriptor to the ACPI_RESOURCE internal
4352 suitable for use by device drivers. Can be used by an operation region
4354 to convert the Connection() buffer object into a ACPI_RESOURCE.
4356 Miscellaneous/Tools/TestSuites:
4357 -------------------------------
4359 Support for extended _HID names (Four alpha characters instead of three).
4360 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
4361 Support for ACPI 5.0 features in the ASLTS test suite.
4362 Fully updated documentation (ACPICA and iASL reference documents.)
4364 ACPI Table Definition Language:
4365 -------------------------------
4367 Support for this language was implemented and released as a subsystem of
4369 iASL compiler in 2010. (See the iASL compiler User Guide.)
4372 Non-ACPI 5.0 changes for this release:
4373 --------------------------------------
4375 1) ACPICA Core Subsystem:
4377 Fix a problem with operation region declarations where a failure can
4380 the region name and an argument that evaluates to an object (such as the
4381 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
4384 Do not abort an ACPI table load if an invalid space ID is found within.
4386 will be caught later if the offending method is executed. ACPICA BZ 925.
4388 Fixed an issue with the FFixedHW space ID where the ID was not always
4389 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
4391 Fixed a problem with the 32-bit generation of the unix-specific OSL
4392 (osunixxf.c). Lin Ming, ACPICA BZ 936.
4394 Several changes made to enable generation with the GCC 4.6 compiler.
4398 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
4400 field registers out-of-range.
4402 2) iASL Compiler/Disassembler and Tools:
4404 iASL: Implemented the __PATH__ operator, which returns the full pathname
4406 the current source file.
4408 AcpiHelp: Automatically display expanded keyword information for all ASL
4411 Debugger: Add "Template" command to disassemble/dump resource template
4414 Added a new master script to generate and execute the ASLTS test suite.
4415 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
4417 iASL: Fix problem with listing generation during processing of the
4419 operator where AML listing was disabled until the entire Switch block was
4422 iASL: Improve support for semicolon statement terminators. Fix "invalid
4423 character" message for some cases when the semicolon is used. Semicolons
4425 now allowed after every <Term> grammar element. ACPICA BZ 927.
4427 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
4430 Disassembler: Fix problem with disassembly of the DataTableRegion
4432 where an inadvertent "Unhandled deferred opcode" message could be
4435 3) Example Code and Data Size
4437 These are the sizes for the OS-independent acpica.lib produced by the
4438 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4439 includes the debug output trace mechanism and has a much larger code and
4444 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4445 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4447 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4448 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4450 ----------------------------------------
4451 22 September 2011. Summary of changes for version 20110922:
4455 Support for ACPI 5.0 in ACPICA has been underway for several months and
4457 be released at the same time that ACPI 5.0 is officially released.
4459 The ACPI 5.0 specification is on track for release in the next few
4462 1) ACPICA Core Subsystem:
4464 Fixed a problem where the maximum sleep time for the Sleep() operator was
4465 intended to be limited to two seconds, but was inadvertently limited to
4469 Linux and Unix makefiles: Added header file dependencies to ensure
4471 generation of ACPICA core code and utilities. Also simplified the
4473 considerably through the use of the vpath variable to specify search
4477 2) iASL Compiler/Disassembler and Tools:
4479 iASL: Implemented support to check the access length for all fields
4481 access named Resource Descriptor fields. For example, if a resource field
4483 defined to be two bits, a warning is issued if a CreateXxxxField() is
4485 with an incorrect bit length. This is implemented for all current
4487 descriptor names. ACPICA BZ 930.
4489 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
4493 iASL: Fixed a couple of issues associated with variable-length package
4494 objects. 1) properly handle constants like One, Ones, Zero -- do not make
4496 VAR_PACKAGE when these are used as a package length. 2) Allow the
4498 opcode (in addition to PACKAGE) when validating object types for
4502 iASL: Emit statistics for all output files (instead of just the ASL input
4504 AML output). Includes listings, hex files, etc.
4506 iASL: Added -G option to the table compiler to allow the compilation of
4508 ACPI tables. The only part of a table that is required is the standard
4513 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
4515 which also adds correct 64-bit support. Also, now all output filenames
4517 completely lower case.
4519 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
4520 loading table files. A warning is issued for any such tables. The only
4521 exception is an FADT. This also fixes a possible fault when attempting to
4523 non-AML tables. ACPICA BZ 932.
4525 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
4527 missing table terminator could cause a fault when using the -p option.
4529 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
4532 3) Example Code and Data Size
4534 These are the sizes for the OS-independent acpica.lib produced by the
4535 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4536 includes the debug output trace mechanism and has a much larger code and
4540 Previous Release (VC 9.0):
4541 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4542 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4543 Current Release (VC 9.0):
4544 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4545 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4548 ----------------------------------------
4549 23 June 2011. Summary of changes for version 20110623:
4551 1) ACPI CA Core Subsystem:
4553 Updated the predefined name repair mechanism to not attempt repair of a
4555 return object if a _PSS object is present. We can only sort the _TSS
4557 package if there is no _PSS within the same scope. This is because if
4560 present, the ACPI specification dictates that the _TSS Power Dissipation
4562 is to be ignored, and therefore some BIOSs leave garbage values in the
4564 Power field(s). In this case, it is best to just return the _TSS package
4566 is. Reported by, and fixed with assistance from Fenghua Yu.
4568 Added an option to globally disable the control method return value
4570 and repair. This runtime option can be used to disable return value
4573 this is causing a problem on a particular machine. Also added an option
4575 AcpiExec (-dr) to set this disable flag.
4577 All makefiles and project files: Major changes to improve generation of
4579 tools. ACPICA BZ 912:
4580 Reduce default optimization levels to improve compatibility
4581 For Linux, add strict-aliasing=0 for gcc 4
4582 Cleanup and simplify use of command line defines
4583 Cleanup multithread library support
4584 Improve usage messages
4586 Linux-specific header: update handling of THREAD_ID and pthread. For the
4588 bit case, improve casting to eliminate possible warnings, especially with
4592 Example Code and Data Size: These are the sizes for the OS-independent
4593 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4595 version of the code includes the debug output trace mechanism and has a
4597 larger code and data size.
4599 Previous Release (VC 9.0):
4600 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4601 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4602 Current Release (VC 9.0):
4603 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4604 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4606 2) iASL Compiler/Disassembler and Tools:
4608 With this release, a new utility named "acpihelp" has been added to the
4610 package. This utility summarizes the ACPI specification chapters for the
4612 and AML languages. It generates under Linux/Unix as well as Windows, and
4613 provides the following functionality:
4614 Find/display ASL operator(s) -- with description and syntax.
4615 Find/display ASL keyword(s) -- with exact spelling and descriptions.
4616 Find/display ACPI predefined name(s) -- with description, number
4617 of arguments, and the return value data type.
4618 Find/display AML opcode name(s) -- with opcode, arguments, and
4620 Decode/display AML opcode -- with opcode name, arguments, and
4623 Service Layers: Make multi-thread support configurable. Conditionally
4625 the multi-thread support so that threading libraries will not be linked
4628 necessary. The only tool that requires multi-thread support is AcpiExec.
4630 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
4632 Bison appear to want the interface to yyerror to be a const char * (or at
4633 least this is a problem when generating iASL on some systems.) ACPICA BZ
4637 Tools: Fix for systems where O_BINARY is not defined. Only used for
4639 versions of the tools.
4641 ----------------------------------------
4642 27 May 2011. Summary of changes for version 20110527:
4644 1) ACPI CA Core Subsystem:
4646 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
4648 signature. Now, only allow SSDT, OEMx, and a null signature. History:
4649 1) Originally, we checked the table signature for "SSDT" or "PSDT".
4650 (PSDT is now obsolete.)
4651 2) We added support for OEMx tables, signature "OEM" plus a fourth
4652 "don't care" character.
4653 3) Valid tables were encountered with a null signature, so we just
4654 gave up on validating the signature, (05/2008).
4655 4) We encountered non-AML tables such as the MADT, which caused
4656 interpreter errors and kernel faults. So now, we once again allow
4657 only SSDT, OEMx, and now, also a null signature. (05/2011).
4659 Added the missing _TDL predefined name to the global name list in order
4661 enable validation. Affects both the core ACPICA code and the iASL
4664 Example Code and Data Size: These are the sizes for the OS-independent
4665 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4667 version of the code includes the debug output trace mechanism and has a
4669 larger code and data size.
4671 Previous Release (VC 9.0):
4672 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4673 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4674 Current Release (VC 9.0):
4675 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4676 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4678 2) iASL Compiler/Disassembler and Tools:
4680 Debugger/AcpiExec: Implemented support for "complex" method arguments on
4682 debugger command line. This adds support beyond simple integers --
4684 Strings, Buffers, and Packages. Includes support for nested packages.
4685 Increased the default command line buffer size to accommodate these
4687 See the ACPICA reference for details and syntax. ACPICA BZ 917.
4689 Debugger/AcpiExec: Implemented support for "default" method arguments for
4691 Execute/Debug command. Now, the debugger will always invoke a control
4693 with the required number of arguments -- even if the command line
4695 none or insufficient arguments. It uses default integer values for any
4697 arguments. Also fixes a bug where only six method arguments maximum were
4698 supported instead of the required seven.
4700 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
4702 also return status in order to prevent buffer overruns. See the ACPICA
4703 reference for details and syntax. ACPICA BZ 921
4705 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
4706 makefiles to simplify support for the two different but similar parser
4707 generators, bison and yacc.
4709 Updated the generic unix makefile for gcc 4. The default gcc version is
4711 expected to be 4 or greater, since options specific to gcc 4 are used.
4713 ----------------------------------------
4714 13 April 2011. Summary of changes for version 20110413:
4716 1) ACPI CA Core Subsystem:
4718 Implemented support to execute a so-called "orphan" _REG method under the
4720 device. This change will force the execution of a _REG method underneath
4723 device even if there is no corresponding operation region of type
4724 EmbeddedControl. Fixes a problem seen on some machines and apparently is
4725 compatible with Windows behavior. ACPICA BZ 875.
4727 Added more predefined methods that are eligible for automatic NULL
4729 element removal. This change adds another group of predefined names to
4732 of names that can be repaired by having NULL package elements dynamically
4733 removed. This group are those methods that return a single variable-
4735 package containing simple data types such as integers, buffers, strings.
4737 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
4740 and _TZD. ACPICA BZ 914.
4742 Split and segregated all internal global lock functions to a new file,
4745 Updated internal address SpaceID for DataTable regions. Moved this
4748 id in preparation for ACPI 5.0 changes that will include some new space
4751 change should not affect user/host code.
4753 Example Code and Data Size: These are the sizes for the OS-independent
4755 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4757 the code includes the debug output trace mechanism and has a much larger
4762 Previous Release (VC 9.0):
4763 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4764 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4765 Current Release (VC 9.0):
4766 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4767 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4769 2) iASL Compiler/Disassembler and Tools:
4771 iASL/DTC: Major update for new grammar features. Allow generic data types
4773 custom ACPI tables. Field names are now optional. Any line can be split
4775 multiple lines using the continuation char (\). Large buffers now use
4777 continuation character(s) and no colon on the continuation lines. See the
4779 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
4782 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
4784 Since the parser stuffs a "zero" as the return value for these statements
4787 the underlying AML grammar), they were seen as "return with value" by the
4789 semantic checking. They are now seen correctly as "null" return
4792 iASL: Check if a_REG declaration has a corresponding Operation Region.
4794 check for each _REG to ensure that there is in fact a corresponding
4796 region declaration in the same scope. If not, the _REG method is not very
4798 since it probably won't be executed. ACPICA BZ 915.
4800 iASL/DTC: Finish support for expression evaluation. Added a new
4803 that implements c-style operator precedence and parenthesization. ACPICA
4807 Disassembler/DTC: Remove support for () and <> style comments in data
4810 that DTC has full expression support, we don't want to have comment
4813 start with a parentheses or a less-than symbol. Now, only the standard /*
4816 comments are supported, as well as the bracket [] comments.
4818 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
4820 headers in the acpidump file. Update the header validation to support
4822 tables. Problem introduced in previous AcpiXtract version in the change
4824 support "wrong checksum" error messages emitted by acpidump utility.
4826 iASL: Add a * option to generate all template files (as a synonym for
4830 "iasl -T *" or "iasl -T ALL".
4832 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
4834 abort the compiler on "fatal" errors, simply should abort the current
4836 This allows multiple compiles with a single (possibly wildcard) compiler
4839 ----------------------------------------
4840 16 March 2011. Summary of changes for version 20110316:
4842 1) ACPI CA Core Subsystem:
4844 Fixed a problem caused by a _PRW method appearing at the namespace root
4846 during the setup of wake GPEs. A fault could occur if a _PRW directly
4849 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
4851 Implemented support for "spurious" Global Lock interrupts. On some
4853 global lock interrupt can occur without the pending flag being set. Upon
4856 interrupt, we now ensure that a thread is actually waiting for the lock
4858 signaling GL availability. Rafael Wysocki, Bob Moore.
4860 Example Code and Data Size: These are the sizes for the OS-independent
4862 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4864 the code includes the debug output trace mechanism and has a much larger
4869 Previous Release (VC 9.0):
4870 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4871 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4872 Current Release (VC 9.0):
4873 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4874 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4876 2) iASL Compiler/Disassembler and Tools:
4878 Implemented full support for the "SLIC" ACPI table. Includes support in
4880 header files, disassembler, table compiler, and template generator. Bob
4884 AcpiXtract: Correctly handle embedded comments and messages from
4886 Apparently some or all versions of acpidump will occasionally emit a
4889 "Wrong checksum", etc., into the dump file. This was causing problems for
4890 AcpiXtract. ACPICA BZ 905.
4892 iASL: Fix the Linux makefile by removing an inadvertent double file
4896 AcpiExec: Update installation of operation region handlers. Install one
4898 for a user-defined address space. This is used by the ASL test suite
4901 ----------------------------------------
4902 11 February 2011. Summary of changes for version 20110211:
4904 1) ACPI CA Core Subsystem:
4906 Added a mechanism to defer _REG methods for some early-installed
4908 Most user handlers should be installed before call to
4909 AcpiEnableSubsystem.
4910 However, Event handlers and region handlers should be installed after
4911 AcpiInitializeObjects. Override handlers for the "default" regions should
4913 installed early, however. This change executes all _REG methods for the
4914 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
4915 chicken/egg issues between them. ACPICA BZ 848.
4917 Implemented an optimization for GPE detection. This optimization will
4919 ignore GPE registers that contain no enabled GPEs -- there is no need to
4920 read the register since this information is available internally. This
4921 becomes more important on machines with a large GPE space. ACPICA
4923 884. Lin Ming. Suggestion from Joe Liu.
4925 Removed all use of the highly unreliable FADT revision field. The
4927 number in the FADT has been found to be completely unreliable and cannot
4929 trusted. Only the actual table length can be used to infer the version.
4931 change updates the ACPICA core and the disassembler so that both no
4933 even look at the FADT version and instead depend solely upon the FADT
4936 Fix an unresolved name issue for the no-debug and no-error-message source
4937 generation cases. The _AcpiModuleName was left undefined in these cases,
4939 it is actually needed as a parameter to some interfaces. Define
4940 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
4942 Split several large files (makefiles and project files updated)
4943 utglobal.c -> utdecode.c
4944 dbcomds.c -> dbmethod.c dbnames.c
4945 dsopcode.c -> dsargs.c dscontrol.c
4946 dsload.c -> dsload2.c
4947 aslanalyze.c -> aslbtypes.c aslwalks.c
4949 Example Code and Data Size: These are the sizes for the OS-independent
4950 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4951 debug version of the code includes the debug output trace mechanism and
4953 a much larger code and data size.
4955 Previous Release (VC 9.0):
4956 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4957 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4958 Current Release (VC 9.0):
4959 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4960 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4962 2) iASL Compiler/Disassembler and Tools:
4964 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
4965 These are useful C-style macros with the standard definitions. ACPICA
4968 iASL/DTC: Added support for integer expressions and labels. Support for
4970 expressions for all integer fields in all ACPI tables. Support for labels
4972 "generic" portions of tables such as UEFI. See the iASL reference manual.
4974 Debugger: Added a command to display the status of global handlers. The
4975 "handlers" command will display op region, fixed event, and miscellaneous
4976 global handlers. installation status -- and for op regions, whether
4978 or user-installed handler will be used.
4980 iASL: Warn if reserved method incorrectly returns a value. Many
4982 names are defined such that they do not return a value. If implemented as
4984 method, issue a warning if such a name explicitly returns a value. ACPICA
4987 iASL: Added detection of GPE method name conflicts. Detects a conflict
4989 there are two GPE methods of the form _Lxy and _Exy in the same scope.
4991 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
4993 iASL/DTC: Fixed a couple input scanner issues with comments and line
4994 numbers. Comment remover could get confused and miss a comment ending.
4996 a problem with line counter maintenance.
4998 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5000 no need to abort on simple errors within a field definition.
5002 Debugger: Simplified the output of the help command. All help output now
5004 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5006 ----------------------------------------
5007 12 January 2011. Summary of changes for version 20110112:
5009 1) ACPI CA Core Subsystem:
5011 Fixed a race condition between method execution and namespace walks that
5013 possibly cause a fault. The problem was apparently introduced in version
5014 20100528 as a result of a performance optimization that reduces the
5017 namespace walks upon method exit by using the delete_namespace_subtree
5018 function instead of the delete_namespace_by_owner function used
5020 Bug is a missing namespace lock in the delete_namespace_subtree function.
5021 dana.myers@oracle.com
5023 Fixed several issues and a possible fault with the automatic "serialized"
5024 method support. History: This support changes a method to "serialized" on
5026 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5027 possibility that it cannot handle reentrancy. This fix repairs a couple
5029 issues seen in the field, especially on machines with many cores:
5031 1) Delete method children only upon the exit of the last thread,
5032 so as to not delete objects out from under other running threads
5033 (and possibly causing a fault.)
5034 2) Set the "serialized" bit for the method only upon the exit of the
5035 Last thread, so as to not cause deadlock when running threads
5037 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5038 so that there is no longer any confusion between the two.
5040 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5042 Debugger: Now lock the namespace for duration of a namespace dump.
5044 issues if the namespace is changing dynamically underneath the debugger.
5045 Especially affects temporary namespace nodes, since the debugger displays
5048 Updated the ordering of include files. The ACPICA headers should appear
5049 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5051 any necessary compiler-specific defines, etc. Affects the ACPI-related
5055 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5057 to all module headers and signons, including the Linux header. This
5059 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5062 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5063 project files for VC++ 6.0 are now obsolete. New project files can be
5065 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5068 Example Code and Data Size: These are the sizes for the OS-independent
5069 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5070 debug version of the code includes the debug output trace mechanism and
5072 much larger code and data size.
5074 Previous Release (VC 6.0):
5075 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5076 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5077 Current Release (VC 9.0):
5078 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5079 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5081 2) iASL Compiler/Disassembler and Tools:
5083 iASL: Added generic data types to the Data Table compiler. Add "generic"
5085 types such as UINT32, String, Unicode, etc., to simplify the generation
5087 platform-defined tables such as UEFI. Lin Ming.
5089 iASL: Added listing support for the Data Table Compiler. Adds listing
5091 (-l) to display actual binary output for each line of input code.
5093 ----------------------------------------
5094 09 December 2010. Summary of changes for version 20101209:
5096 1) ACPI CA Core Subsystem:
5098 Completed the major overhaul of the GPE support code that was begun in
5100 2010. Major features include: removal of _PRW execution in ACPICA (host
5101 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
5102 changes to existing interfaces, simplification of GPE handler operation,
5104 a handful of new interfaces:
5110 One new file, evxfgpe.c to consolidate all external GPE interfaces.
5112 See the ACPICA Programmer Reference for full details and programming
5113 information. See the new section 4.4 "General Purpose Event (GPE)
5115 for a full overview, and section 8.7 "ACPI General Purpose Event
5117 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
5119 Bob Moore, Rafael Wysocki.
5121 Implemented a new GPE feature for Windows compatibility, the "Implicit
5123 GPE Notify". This feature will automatically issue a Notify(2) on a
5125 when a Wake GPE is received if there is no corresponding GPE method or
5126 handler. ACPICA BZ 870.
5128 Fixed a problem with the Scope() operator during table parse and load
5130 During load phase (table load or method execution), the scope operator
5132 not enter the target into the namespace. Instead, it should open a new
5134 at the target location. Linux BZ 19462, ACPICA BZ 882.
5136 Example Code and Data Size: These are the sizes for the OS-independent
5137 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5138 debug version of the code includes the debug output trace mechanism and
5140 much larger code and data size.
5143 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5144 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5146 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5147 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5149 2) iASL Compiler/Disassembler and Tools:
5151 iASL: Relax the alphanumeric restriction on _CID strings. These strings
5153 "bus-specific" per the ACPI specification, and therefore any characters
5155 acceptable. The only checks that can be performed are for a null string
5157 perhaps for a leading asterisk. ACPICA BZ 886.
5159 iASL: Fixed a problem where a syntax error that caused a premature EOF
5160 condition on the source file emitted a very confusing error message. The
5161 premature EOF is now detected correctly. ACPICA BZ 891.
5163 Disassembler: Decode the AccessSize within a Generic Address Structure
5165 access, word access, etc.) Note, this field does not allow arbitrary bit
5166 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
5168 New: AcpiNames utility - Example namespace dump utility. Shows an example
5170 ACPICA configuration for a minimal namespace dump utility. Uses table and
5171 namespace managers, but no AML interpreter. Does not add any
5173 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
5174 partition and configure ACPICA. ACPICA BZ 883.
5176 AML Debugger: Increased the debugger buffer size for method return
5178 Was 4K, increased to 16K. Also enhanced error messages for debugger
5180 execution, including the buffer overflow case.
5182 ----------------------------------------
5183 13 October 2010. Summary of changes for version 20101013:
5185 1) ACPI CA Core Subsystem:
5187 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
5189 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
5190 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
5192 Changed the type of the predefined namespace object _TZ from ThermalZone
5194 Device. This was found to be confusing to the host software that
5196 the various thermal zones, since _TZ is not really a ThermalZone.
5199 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
5202 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
5203 string is "Windows 2006 SP2".
5205 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
5207 code automatically repairs _HID-related strings, this type of code is no
5208 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
5211 Example Code and Data Size: These are the sizes for the OS-independent
5212 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5213 debug version of the code includes the debug output trace mechanism and
5215 much larger code and data size.
5218 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5219 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5221 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5222 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5224 2) iASL Compiler/Disassembler and Tools:
5226 iASL: Implemented additional compile-time validation for _HID strings.
5228 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
5231 the string must be exactly seven or eight characters. For both _HID and
5233 strings, all characters must be alphanumeric. ACPICA BZ 874.
5235 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
5236 descriptors that are mostly or all zeros, with the expectation that they
5238 be filled in at runtime. iASL now allows this as long as there is a
5240 tag" (name) associated with the descriptor, which gives the ASL a handle
5241 needed to modify the descriptor. ACPICA BZ 873.
5243 Added single-thread support to the generic Unix application OSL.
5245 for iASL support, this change removes the use of semaphores in the
5247 threaded ACPICA tools/applications - increasing performance. The
5248 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
5249 option. ACPICA BZ 879.
5251 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
5253 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
5255 iASL: Moved all compiler messages to a new file, aslmessages.h.
5257 ----------------------------------------
5258 15 September 2010. Summary of changes for version 20100915:
5260 1) ACPI CA Core Subsystem:
5262 Removed the AcpiOsDerivePciId OSL interface. The various host
5264 of this function were not OS-dependent and are now obsolete and can be
5265 removed from all host OSLs. This function has been replaced by
5266 AcpiHwDerivePciId, which is now part of the ACPICA core code.
5267 AcpiHwDerivePciId has been implemented without recursion. Adds one new
5268 module, hwpci.c. ACPICA BZ 857.
5270 Implemented a dynamic repair for _HID and _CID strings. The following
5271 problems are now repaired at runtime: 1) Remove a leading asterisk in the
5272 string, and 2) the entire string is uppercased. Both repairs are in
5273 accordance with the ACPI specification and will simplify host driver
5277 The ACPI_THREAD_ID type is no longer configurable, internally it is now
5278 always UINT64. This simplifies the ACPICA code, especially any printf
5280 UINT64 is the only common data type for all thread_id types across all
5281 operating systems. It is now up to the host OSL to cast the native
5283 type to UINT64 before returning the value to ACPICA (via
5285 Lin Ming, Bob Moore.
5287 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
5289 keyword is not standard across compilers, and this type allows inline to
5291 configured on a per-compiler basis. Lin Ming.
5293 Made the system global AcpiGbl_SystemAwakeAndRunning publically
5295 Added an extern for this boolean in acpixf.h. Some hosts utilize this
5297 during suspend/restore operations. ACPICA BZ 869.
5299 All code that implements error/warning messages with the "ACPI:" prefix
5301 been moved to a new module, utxferror.c.
5303 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
5305 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
5307 Example Code and Data Size: These are the sizes for the OS-independent
5308 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5309 debug version of the code includes the debug output trace mechanism and
5311 much larger code and data size.
5314 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5315 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5317 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5318 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5320 2) iASL Compiler/Disassembler and Tools:
5322 iASL/Disassembler: Write ACPI errors to stderr instead of the output
5324 This keeps the output files free of random error messages that may
5326 from within the namespace/interpreter code. Used this opportunity to
5328 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
5329 866. Lin Ming, Bob Moore.
5331 Tools: update some printfs for ansi warnings on size_t. Handle width
5333 of size_t on 32-bit versus 64-bit generations. Lin Ming.
5335 ----------------------------------------
5336 06 August 2010. Summary of changes for version 20100806:
5338 1) ACPI CA Core Subsystem:
5340 Designed and implemented a new host interface to the _OSI support code.
5342 will allow the host to dynamically add or remove multiple _OSI strings,
5344 well as install an optional handler that is called for each _OSI
5346 Also added a new AML debugger command, 'osi' to display and modify the
5348 _OSI string table, and test support in the AcpiExec utility. See the
5350 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
5352 AcpiInstallInterface - Add an _OSI string.
5353 AcpiRemoveInterface - Delete an _OSI string.
5354 AcpiInstallInterfaceHandler - Install optional _OSI handler.
5356 AcpiOsValidateInterface - no longer used.
5358 source/components/utilities/utosi.c
5360 Re-introduced the support to enable multi-byte transfers for Embedded
5361 Controller (EC) operation regions. A reported problem was found to be a
5363 in the host OS, not in the multi-byte support. Previously, the maximum
5365 size passed to the EC operation region handler was a single byte. There
5367 often EC Fields larger than one byte that need to be transferred, and it
5369 useful for the EC driver to lock these as a single transaction. This
5371 enables single transfers larger than 8 bits. This effectively changes the
5372 access to the EC space from ByteAcc to AnyAcc, and will probably require
5373 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
5375 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
5377 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
5378 prototype in acpiosxf.h had the output value pointer as a (void *).
5379 It should be a (UINT64 *). This may affect some host OSL code.
5381 Fixed a couple problems with the recently modified Linux makefiles for
5383 and AcpiExec. These new makefiles place the generated object files in the
5384 local directory so that there can be no collisions between the files that
5386 shared between them that are compiled with different options.
5388 Example Code and Data Size: These are the sizes for the OS-independent
5389 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5390 debug version of the code includes the debug output trace mechanism and
5392 much larger code and data size.
5395 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5396 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5398 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5399 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5401 2) iASL Compiler/Disassembler and Tools:
5403 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
5405 namespace from and disassemble an entire group of AML files. Useful for
5406 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
5408 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
5410 iASL: Allow multiple invocations of -e option. This change allows
5412 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
5416 ----------------------------------------
5417 02 July 2010. Summary of changes for version 20100702:
5419 1) ACPI CA Core Subsystem:
5421 Implemented several updates to the recently added GPE reference count
5422 support. The model for "wake" GPEs is changing to give the host OS
5424 control of these GPEs. Eventually, the ACPICA core will not execute any
5426 methods, since the host already must execute them. Also, additional
5428 were made to help ensure that the reference counts are kept in proper
5429 synchronization with reality. Rafael J. Wysocki.
5431 1) Ensure that GPEs are not enabled twice during initialization.
5432 2) Ensure that GPE enable masks stay in sync with the reference count.
5433 3) Do not inadvertently enable GPEs when writing GPE registers.
5434 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
5435 interface. This interface will set or clear individual GPEs for wakeup.
5436 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
5438 are now used for "runtime" GPEs only.
5440 Changed the behavior of the GPE install/remove handler interfaces. The
5443 no longer disabled during this process, as it was found to cause problems
5445 some machines. Rafael J. Wysocki.
5447 Reverted a change introduced in version 20100528 to enable Embedded
5448 Controller multi-byte transfers. This change was found to cause problems
5450 Index Fields and possibly Bank Fields. It will be reintroduced when these
5451 problems have been resolved.
5453 Fixed a problem with references to Alias objects within Package Objects.
5455 reference to an Alias within the definition of a Package was not always
5456 resolved properly. Aliases to objects like Processors, Thermal zones,
5458 were resolved to the actual object instead of a reference to the object
5461 should be. Package objects are only allowed to contain integer, string,
5462 buffer, package, and reference objects. Redhat bugzilla 608648.
5464 Example Code and Data Size: These are the sizes for the OS-independent
5465 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5466 debug version of the code includes the debug output trace mechanism and
5468 much larger code and data size.
5471 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5472 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5474 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5475 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5477 2) iASL Compiler/Disassembler and Tools:
5479 iASL: Implemented a new compiler subsystem to allow definition and
5480 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
5482 are called "ACPI Data Tables", and the new compiler is the "Data Table
5483 Compiler". This compiler is intended to simplify the existing error-prone
5484 process of creating these tables for the BIOS, as well as allowing the
5485 disassembly, modification, recompilation, and override of existing ACPI
5487 tables. See the iASL User Guide for detailed information.
5489 iASL: Implemented a new Template Generator option in support of the new
5491 Table Compiler. This option will create examples of all known ACPI tables
5492 that can be used as the basis for table development. See the iASL
5493 documentation and the -T option.
5495 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
5498 Updated the Linux makefiles for iASL and AcpiExec to place the generated
5499 object files in the local directory so that there can be no collisions
5500 between the shared files between them that are generated with different
5503 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
5505 the #define __APPLE__ to enable this support.
5507 ----------------------------------------
5508 28 May 2010. Summary of changes for version 20100528:
5510 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
5511 available at www.acpi.info. This is primarily an errata release.
5513 1) ACPI CA Core Subsystem:
5515 Undefined ACPI tables: We are looking for the definitions for the
5517 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
5519 Implemented support to enable multi-byte transfers for Embedded
5521 (EC) operation regions. Previously, the maximum data size passed to the
5523 operation region handler was a single byte. There are often EC Fields
5525 than one byte that need to be transferred, and it is useful for the EC
5527 to lock these as a single transaction. This change enables single
5529 larger than 8 bits. This effectively changes the access to the EC space
5531 ByteAcc to AnyAcc, and will probably require changes to the host OS
5533 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
5535 transfers. Alexey Starikovskiy, Lin Ming
5537 Implemented a performance enhancement for namespace search and access.
5539 change enhances the performance of namespace searches and walks by adding
5541 backpointer to the parent in each namespace node. On large namespaces,
5543 change can improve overall ACPI performance by up to 9X. Adding a pointer
5545 each namespace node increases the overall size of the internal namespace
5547 about 5%, since each namespace entry usually consists of both a namespace
5548 node and an ACPI operand object. However, this is the first growth of the
5549 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
5551 Implemented a performance optimization that reduces the number of
5553 walks. On control method exit, only walk the namespace if the method is
5555 to have created namespace objects outside of its local scope. Previously,
5557 entire namespace was traversed on each control method exit. This change
5559 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
5562 Added support to truncate I/O addresses to 16 bits for Windows
5564 Some ASL code has been seen in the field that inadvertently has bits set
5565 above bit 15. This feature is optional and is enabled if the BIOS
5567 any Windows OSI strings. It can also be enabled by the host OS. Matthew
5570 Added support to limit the maximum time for the ASL Sleep() operator. To
5571 prevent accidental deep sleeps, limit the maximum time that Sleep() will
5572 actually sleep. Configurable, the default maximum is two seconds. ACPICA
5575 Added run-time validation support for the _WDG and_WED Microsoft
5577 methods. These objects are defined by "Windows Instrumentation", and are
5579 part of the ACPI spec. ACPICA BZ 860.
5581 Expanded all statistic counters used during namespace and device
5582 initialization from 16 to 32 bits in order to support very large
5585 Replaced all instances of %d in printf format specifiers with %u since
5587 all integers in ACPICA are unsigned.
5589 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
5593 Example Code and Data Size: These are the sizes for the OS-independent
5594 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5595 debug version of the code includes the debug output trace mechanism and
5597 much larger code and data size.
5600 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5601 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5603 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5604 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5606 2) iASL Compiler/Disassembler and Tools:
5608 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
5609 methods. These objects are defined by "Windows Instrumentation", and are
5611 part of the ACPI spec. ACPICA BZ 860.
5613 AcpiExec: added option to disable the memory tracking mechanism. The -dt
5614 option will disable the tracking mechanism, which improves performance
5617 AcpiExec: Restructured the command line options into -d (disable) and -e
5620 ----------------------------------------
5621 28 April 2010. Summary of changes for version 20100428:
5623 1) ACPI CA Core Subsystem:
5625 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
5626 including FADT-based and GPE Block Devices, execute any _PRW methods in
5628 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
5629 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
5630 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
5631 Devices. Provides compatibility with other ACPI implementations. Two new
5632 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
5635 Fixed a regression introduced in version 20100331 within the table
5637 where initial table loading could fail. This was introduced in the fix
5639 AcpiReallocateRootTable. Also, renamed some of fields in the table
5641 data structures to clarify their meaning and use.
5643 Fixed a possible allocation overrun during internal object copy in
5644 AcpiUtCopySimpleObject. The original code did not correctly handle the
5646 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
5649 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
5650 possible access beyond end-of-allocation. Also, now fully validate
5652 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
5654 Example Code and Data Size: These are the sizes for the OS-independent
5655 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5656 debug version of the code includes the debug output trace mechanism and
5658 much larger code and data size.
5661 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5662 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5664 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5665 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5667 2) iASL Compiler/Disassembler and Tools:
5669 iASL: Implemented Min/Max/Len/Gran validation for address resource
5670 descriptors. This change implements validation for the address fields
5672 are common to all address-type resource descriptors. These checks are
5673 implemented: Checks for valid Min/Max, length within the Min/Max window,
5674 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
5676 table 6-40 in the ACPI 4.0a specification. Also split the large
5678 and aslrestype2.c files into five new files. ACPICA BZ 840.
5680 iASL: Added support for the _Wxx predefined names. This support was
5682 and these names were not recognized by the compiler as valid predefined
5683 names. ACPICA BZ 851.
5685 iASL: Added an error for all predefined names that are defined to return
5687 value and thus must be implemented as Control Methods. These include all
5689 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
5690 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
5692 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
5694 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
5696 dynamically loaded via the Load() operator. Also cleaned up output for
5699 ta and -tc options. ACPICA BZ 853.
5701 Tests: Added a new file with examples of extended iASL error checking.
5702 Demonstrates the advanced error checking ability of the iASL compiler.
5703 Available at tests/misc/badcode.asl.
5705 ----------------------------------------
5706 31 March 2010. Summary of changes for version 20100331:
5708 1) ACPI CA Core Subsystem:
5710 Completed a major update for the GPE support in order to improve support
5712 shared GPEs and to simplify both host OS and ACPICA code. Added a
5714 count mechanism to support shared GPEs that require multiple device
5716 Several external interfaces have changed. One external interface has been
5717 removed. One new external interface was added. Most of the GPE external
5718 interfaces now use the GPE spinlock instead of the events mutex (and the
5719 Flags parameter for many GPE interfaces has been removed.) See the
5721 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
5723 Wysocki. ACPICA BZ 831.
5726 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
5732 Implemented write support for DataTable operation regions. These regions
5734 defined via the DataTableRegion() operator. Previously, only read support
5736 implemented. The ACPI specification allows DataTableRegions to be
5740 Implemented a new subsystem option to force a copy of the DSDT to local
5741 memory. Optionally copy the entire DSDT to local memory (instead of
5743 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
5745 the original DSDT, creating the need for this option. Default is FALSE,
5749 Implemented detection of a corrupted or replaced DSDT. This change adds
5750 support to detect a DSDT that has been corrupted and/or replaced from
5752 the OS (by firmware). This is typically catastrophic for the system, but
5754 been seen on some machines. Once this problem has been detected, the DSDT
5755 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
5757 Fixed two problems with AcpiReallocateRootTable during the root table
5759 When copying the root table to the new allocation, the length used was
5760 incorrect. The new size was used instead of the current table size,
5762 too much data was copied. Also, the count of available slots for ACPI
5764 was not set correctly. Alexey Starikovskiy, Bob Moore.
5766 Example Code and Data Size: These are the sizes for the OS-independent
5767 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5768 debug version of the code includes the debug output trace mechanism and
5770 much larger code and data size.
5773 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5774 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5776 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5777 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5779 2) iASL Compiler/Disassembler and Tools:
5781 iASL: Implement limited typechecking for values returned from predefined
5782 control methods. The type of any returned static (unnamed) object is now
5783 validated. For example, Return(1). ACPICA BZ 786.
5785 iASL: Fixed a predefined name object verification regression. Fixes a
5787 introduced in version 20100304. An error is incorrectly generated if a
5788 predefined name is declared as a static named object with a value defined
5789 using the keywords "Zero", "One", or "Ones". Lin Ming.
5791 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
5793 reducing the requested registry access rights. ACPICA BZ 842.
5795 Disassembler: fixed a possible fault when generating External()
5797 Introduced in commit ae7d6fd: Properly handle externals with parent-
5799 (carat). Fixes a string length allocation calculation. Lin Ming.
5801 ----------------------------------------
5802 04 March 2010. Summary of changes for version 20100304:
5804 1) ACPI CA Core Subsystem:
5806 Fixed a possible problem with the AML Mutex handling function
5807 AcpiExReleaseMutex where the function could fault under the very rare
5808 condition when the interpreter has blocked, the interpreter lock is
5810 the interpreter is then reentered via the same thread, and attempts to
5811 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
5815 Implemented additional configuration support for the AML "Debug Object".
5816 Output from the debug object can now be enabled via a global variable,
5817 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
5819 This debug output is now available in the release version of ACPICA
5821 of just the debug version. Also, the entire debug output module can now
5823 configured out of the ACPICA build if desired. One new file added,
5824 executer/exdebug.c. Lin Ming, Bob Moore.
5826 Added header support for the ACPI MCHI table (Management Controller Host
5827 Interface Table). This table was added in ACPI 4.0, but the defining
5829 has only recently become available.
5831 Standardized output of integer values for ACPICA warnings/errors. Always
5833 0x prefix for hex output, always use %u for unsigned integer decimal
5835 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
5837 invocations.) These invocations were converted from the original
5838 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
5840 Example Code and Data Size: These are the sizes for the OS-independent
5841 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5842 debug version of the code includes the debug output trace mechanism and
5844 much larger code and data size.
5847 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5848 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5850 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5851 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5853 2) iASL Compiler/Disassembler and Tools:
5855 iASL: Implemented typechecking support for static (non-control method)
5856 predefined named objects that are declared with the Name() operator. For
5857 example, the type of this object is now validated to be of type Integer:
5858 Name(_BBN, 1). This change migrates the compiler to using the core
5860 name table instead of maintaining a local version. Added a new file,
5861 aslpredef.c. ACPICA BZ 832.
5863 Disassembler: Added support for the ACPI 4.0 MCHI table.
5865 ----------------------------------------
5866 21 January 2010. Summary of changes for version 20100121:
5868 1) ACPI CA Core Subsystem:
5870 Added the 2010 copyright to all module headers and signons. This affects
5871 virtually every file in the ACPICA core subsystem, the iASL compiler, the
5872 tools/utilities, and the test suites.
5874 Implemented a change to the AcpiGetDevices interface to eliminate
5876 invocations of the _STA method. In the case where a specific _HID is
5877 requested, do not run _STA until a _HID match is found. This eliminates
5878 potentially dozens of _STA calls during a search for a particular
5880 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
5882 Implemented an additional repair for predefined method return values.
5884 to repair unexpected NULL elements within returned Package objects.
5887 Integer of value zero, a NULL String, or a zero-length Buffer as
5889 ACPICA BZ 818. Lin Ming, Bob Moore.
5891 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
5893 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
5895 64-bit AML integers). It is now obsolete and this change removes it from
5897 ACPICA code base, replaced by UINT64. The original typedef has been
5899 for now for compatibility with existing device driver code. ACPICA BZ
5902 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
5904 the parse tree object.
5906 Added additional warning options for the gcc-4 generation. Updated the
5908 accordingly. This includes some code restructuring to eliminate
5910 code, elimination of some gotos, elimination of unused return values,
5912 additional casting, and removal of redundant declarations.
5914 Example Code and Data Size: These are the sizes for the OS-independent
5915 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5916 debug version of the code includes the debug output trace mechanism and
5918 much larger code and data size.
5921 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
5922 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
5924 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5925 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5927 2) iASL Compiler/Disassembler and Tools:
5929 No functional changes for this release.
5931 ----------------------------------------
5932 14 December 2009. Summary of changes for version 20091214:
5934 1) ACPI CA Core Subsystem:
5936 Enhanced automatic data type conversions for predefined name repairs.
5938 change expands the automatic repairs/conversions for predefined name
5940 values to make Integers, Strings, and Buffers fully interchangeable.
5943 Buffer can be converted to a Package of Integers if necessary. The
5945 module was completely restructured. Lin Ming, Bob Moore.
5947 Implemented automatic removal of null package elements during predefined
5949 repairs. This change will automatically remove embedded and trailing NULL
5950 package elements from returned package objects that are defined to
5953 variable number of sub-packages. The driver is then presented with a
5955 with no null elements to deal with. ACPICA BZ 819.
5957 Implemented a repair for the predefined _FDE and _GTM names. The expected
5958 return value for both names is a Buffer of 5 DWORDs. This repair fixes
5960 possible problems (both seen in the field), where a package of integers
5962 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
5965 Implemented additional module-level code support. This change will
5967 execute module-level code that is not at the root of the namespace (under
5969 Device object, etc.). Now executes the code within the current scope
5971 of the root. ACPICA BZ 762. Lin Ming.
5973 Fixed possible mutex acquisition errors when running _REG methods. Fixes
5975 problem where mutex errors can occur when running a _REG method that is
5977 the same scope as a method-defined operation region or an operation
5979 under a module-level IF block. This type of code is rare, so the problem
5981 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
5983 Fixed a possible memory leak during module-level code execution. An
5985 could be leaked for each block of executed module-level code if the
5986 interpreter slack mode is enabled This change deletes any implicitly
5988 object from the module-level code block. Lin Ming.
5990 Removed messages for successful predefined repair(s). The repair
5992 was considered too wordy. Now, messages are only unconditionally emitted
5994 the return object cannot be repaired. Existing messages for successful
5995 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
5998 Example Code and Data Size: These are the sizes for the OS-independent
5999 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6000 debug version of the code includes the debug output trace mechanism and
6002 much larger code and data size.
6005 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6006 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6008 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6009 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6011 2) iASL Compiler/Disassembler and Tools:
6013 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6015 were no longer automatically removed at the termination of the compile.
6017 acpiexec: Implemented the -f option to specify default region fill value.
6018 This option specifies the value used to initialize buffers that simulate
6019 operation regions. Default value is zero. Useful for debugging problems
6021 depend on a specific initial value for a region or field.
6023 ----------------------------------------
6024 12 November 2009. Summary of changes for version 20091112:
6026 1) ACPI CA Core Subsystem:
6028 Implemented a post-order callback to AcpiWalkNamespace. The existing
6029 interface only has a pre-order callback. This change adds an additional
6030 parameter for a post-order callback which will be more useful for bus
6032 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6034 Modified the behavior of the operation region memory mapping cache for
6035 SystemMemory. Ensure that the memory mappings created for operation
6037 do not cross 4K page boundaries. Crossing a page boundary while mapping
6038 regions can cause kernel warnings on some hosts if the pages have
6040 attributes. Such regions are probably BIOS bugs, and this is the
6042 Linux BZ 14445. Lin Ming.
6044 Implemented an automatic repair for predefined methods that must return
6045 sorted lists. This change will repair (by sorting) packages returned by
6047 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6049 and do not contain NULL package elements. Adds one new file,
6050 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6052 Fixed a possible fault during predefined name validation if a return
6054 object contains NULL elements. Also adds a warning if a NULL element is
6055 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6057 include repair or removal of all such NULL elements where possible.
6059 Implemented additional module-level executable AML code support. This
6061 will execute module-level code that is not at the root of the namespace
6062 (under a Device object, etc.) at table load time. Module-level executable
6064 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6066 Implemented a new internal function to create Integer objects. This
6068 simplifies miscellaneous object creation code. ACPICA BZ 823.
6070 Reduced the severity of predefined repair messages, Warning to Info.
6072 the object was successfully repaired, a warning is too severe. Reduced to
6074 info message for now. These messages may eventually be changed to debug-
6078 Example Code and Data Size: These are the sizes for the OS-independent
6079 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6080 debug version of the code includes the debug output trace mechanism and
6082 much larger code and data size.
6085 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6086 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6088 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6089 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6091 2) iASL Compiler/Disassembler and Tools:
6093 iASL: Implemented Switch() with While(1) so that Break works correctly.
6095 change correctly implements the Switch operator with a surrounding
6097 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
6099 iASL: Added a message if a package initializer list is shorter than
6101 length. Adds a new remark for a Package() declaration if an initializer
6103 exists, but is shorter than the declared length of the package. Although
6104 technically legal, this is probably a coding error and it is seen in the
6105 field. ACPICA BZ 815. Lin Ming, Bob Moore.
6107 iASL: Fixed a problem where the compiler could fault after the maximum
6109 of errors was reached (200).
6111 acpixtract: Fixed a possible warning for pointer cast if the compiler
6113 level set very high.
6115 ----------------------------------------
6116 13 October 2009. Summary of changes for version 20091013:
6118 1) ACPI CA Core Subsystem:
6120 Fixed a problem where an Operation Region _REG method could be executed
6122 than once. If a custom address space handler is installed by the host
6124 the "initialize operation regions" phase of the ACPICA initialization,
6126 _REG methods for that address space could be executed twice. This change
6127 fixes the problem. ACPICA BZ 427. Lin Ming.
6129 Fixed a possible memory leak for the Scope() ASL operator. When the exact
6130 invocation of "Scope(\)" is executed (change scope to root), one internal
6131 operand object was leaked. Lin Ming.
6133 Implemented a run-time repair for the _MAT predefined method. If the _MAT
6134 return value is defined as a Field object in the AML, and the field
6135 size is less than or equal to the default width of an integer (32 or
6137 can incorrectly return an Integer instead of a Buffer. ACPICA now
6138 automatically repairs this problem. ACPICA BZ 810.
6140 Implemented a run-time repair for the _BIF and _BIX predefined methods.
6142 "OEM Information" field is often incorrectly returned as an Integer with
6143 value zero if the field is not supported by the platform. This is due to
6145 ambiguity in the ACPI specification. The field should always be a string.
6146 ACPICA now automatically repairs this problem by returning a NULL string
6147 within the returned Package. ACPICA BZ 807.
6149 Example Code and Data Size: These are the sizes for the OS-independent
6150 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6151 debug version of the code includes the debug output trace mechanism and
6153 much larger code and data size.
6156 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6157 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6159 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6160 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6162 2) iASL Compiler/Disassembler and Tools:
6164 Disassembler: Fixed a problem where references to external symbols that
6165 contained one or more parent-prefixes (carats) were not handled
6167 possibly causing a fault. ACPICA BZ 806. Lin Ming.
6169 Disassembler: Restructured the code so that all functions that handle
6170 external symbols are in a single module. One new file is added,
6173 AML Debugger: Added a max count argument for the Batch command (which
6174 executes multiple predefined methods within the namespace.)
6176 iASL: Updated the compiler documentation (User Reference.) Available at
6177 http://www.acpica.org/documentation/. ACPICA BZ 750.
6179 AcpiXtract: Updated for Lint and other formatting changes. Close all open
6182 ----------------------------------------
6183 03 September 2009. Summary of changes for version 20090903:
6185 1) ACPI CA Core Subsystem:
6187 For Windows Vista compatibility, added the automatic execution of an _INI
6188 method located at the namespace root (\_INI). This method is executed at
6189 table load time. This support is in addition to the automatic execution
6191 \_SB._INI. Lin Ming.
6193 Fixed a possible memory leak in the interpreter for AML package objects
6195 the package initializer list is longer than the defined size of the
6197 This apparently can only happen if the BIOS changes the package size on
6199 fly (seen in a _PSS object), as ASL compilers do not allow this. The
6200 interpreter will truncate the package to the defined size (and issue an
6202 message), but previously could leave the extra objects undeleted if they
6204 pre-created during the argument processing (such is the case if the
6206 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
6208 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
6209 This has been reported in the field. Previously, ACPICA would zero out
6211 buffer/string. Now, the operation is treated as a noop. Provides Windows
6212 compatibility. ACPICA BZ 803. Lin Ming.
6214 Removed an extraneous error message for ASL constructs of the form
6215 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
6217 are seen in many BIOSs and are once again treated as NOOPs and no error
6219 emitted when they are encountered. ACPICA BZ 785.
6221 Fixed an extraneous warning message if a _DSM reserved method returns a
6222 Package object. _DSM can return any type of object, so validation on the
6223 return type cannot be performed. ACPICA BZ 802.
6225 Example Code and Data Size: These are the sizes for the OS-independent
6226 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6227 debug version of the code includes the debug output trace mechanism and
6229 much larger code and data size.
6232 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6233 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6235 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6236 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6238 2) iASL Compiler/Disassembler and Tools:
6240 iASL: Fixed a problem with the use of the Alias operator and Resource
6241 Templates. The correct alias is now constructed and no error is emitted.
6244 iASL: Implemented the -I option to specify additional search directories
6246 include files. Allows multiple additional search paths for include files.
6247 Directories are searched in the order specified on the command line
6249 the local directory is searched.) ACPICA BZ 800.
6251 iASL: Fixed a problem where the full pathname for include files was not
6252 emitted for warnings/errors. This caused the IDE support to not work
6253 properly. ACPICA BZ 765.
6255 iASL: Implemented the -@ option to specify a Windows-style response file
6256 containing additional command line options. ACPICA BZ 801.
6258 AcpiExec: Added support to load multiple AML files simultaneously (such
6261 DSDT and multiple SSDTs). Also added support for wildcards within the AML
6262 pathname. These features allow all machine tables to be easily loaded and
6263 debugged together. ACPICA BZ 804.
6265 Disassembler: Added missing support for disassembly of HEST table Error
6269 ----------------------------------------
6270 30 July 2009. Summary of changes for version 20090730:
6272 The ACPI 4.0 implementation for ACPICA is complete with this release.
6274 1) ACPI CA Core Subsystem:
6276 ACPI 4.0: Added header file support for all new and changed ACPI tables.
6277 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
6279 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
6281 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
6283 have been some ACPI 4.0 changes to other existing tables. Split the large
6284 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
6286 ACPI 4.0: Implemented predefined name validation for all new names. There
6288 31 new names in ACPI 4.0. The predefined validation module was split into
6290 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
6292 Implemented support for so-called "module-level executable code". This is
6293 executable AML code that exists outside of any control method and is
6295 to be executed at table load time. Although illegal since ACPI 2.0, this
6297 of code still exists and is apparently still being created. Blocks of
6299 code are now detected and executed as intended. Currently, the code
6301 must exist under either an If, Else, or While construct; these are the
6302 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
6304 Implemented an automatic dynamic repair for predefined names that return
6305 nested Package objects. This applies to predefined names that are defined
6307 return a variable-length Package of sub-packages. If the number of sub-
6308 packages is one, BIOS code is occasionally seen that creates a simple
6310 package with no sub-packages. This code attempts to fix the problem by
6311 wrapping a new package object around the existing package. These methods
6313 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
6317 Fixed a regression introduced in 20090625 for the AcpiGetDevices
6319 The _HID/_CID matching was broken and no longer matched IDs correctly.
6323 Fixed a problem with AcpiReset where the reset would silently fail if the
6324 register was one of the protected I/O ports. AcpiReset now bypasses the
6326 validation mechanism. This may eventually be driven into the
6330 Fixed a regression related to the recent update of the AcpiRead/Write
6331 interfaces. A sleep/suspend could fail if the optional PM2 Control
6333 does not exist during an attempt to write the Bus Master Arbitration bit.
6334 (However, some hosts already delete the code that writes this bit, and
6336 code may in fact be obsolete at this date.) ACPICA BZ 799.
6338 Fixed a problem where AcpiTerminate could fault if inadvertently called
6340 in succession. ACPICA BZ 795.
6342 Example Code and Data Size: These are the sizes for the OS-independent
6343 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6344 debug version of the code includes the debug output trace mechanism and
6346 much larger code and data size.
6349 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6350 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6352 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6353 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6355 2) iASL Compiler/Disassembler and Tools:
6357 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
6358 changes to existing tables. ACPICA BZ 775.
6360 ----------------------------------------
6361 25 June 2009. Summary of changes for version 20090625:
6363 The ACPI 4.0 Specification was released on June 16 and is available at
6364 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
6365 continue for the next few releases.
6367 1) ACPI CA Core Subsystem:
6369 ACPI 4.0: Implemented interpreter support for the IPMI operation region
6370 address space. Includes support for bi-directional data buffers and an
6372 address space handler (to be installed by an IPMI device driver.) ACPICA
6376 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
6378 support in both the header files and the disassembler.
6380 Completed a major update for the AcpiGetObjectInfo external interface.
6382 - Support for variable, unlimited length HID, UID, and CID strings.
6383 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
6385 - Call the _SxW power methods on behalf of a device object.
6386 - Determine if a device is a PCI root bridge.
6387 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
6388 These changes will require an update to all callers of this interface.
6390 the updated ACPICA Programmer Reference for details. One new source file
6392 been added - utilities/utids.c. ACPICA BZ 368, 780.
6394 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
6395 transfers. The Value parameter has been extended from 32 bits to 64 bits
6397 order to support new ACPI 4.0 tables. These changes will require an
6400 all callers of these interfaces. See the ACPICA Programmer Reference for
6401 details. ACPICA BZ 768.
6403 Fixed several problems with AcpiAttachData. The handler was not invoked
6405 the host node was deleted. The data sub-object was not automatically
6407 when the host node was deleted. The interface to the handler had an
6409 parameter, this was removed. ACPICA BZ 778.
6411 Enhanced the function that dumps ACPI table headers. All non-printable
6412 characters in the string fields are now replaced with '?' (Signature,
6414 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
6415 these fields are occasionally seen in the field. ACPICA BZ 788.
6417 Fixed a problem with predefined method repair code where the code that
6418 attempts to repair/convert an object of incorrect type is only executed
6420 the first time the predefined method is called. The mechanism that
6422 warnings on subsequent calls was interfering with the repair mechanism.
6425 Fixed a possible memory leak in the predefined validation/repair code
6428 buffer is automatically converted to an expected string object.
6430 Removed obsolete 16-bit files from the distribution and from the current
6432 tree head. ACPICA BZ 776.
6434 Example Code and Data Size: These are the sizes for the OS-independent
6435 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6436 debug version of the code includes the debug output trace mechanism and
6438 much larger code and data size.
6441 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6442 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6444 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6445 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6447 2) iASL Compiler/Disassembler and Tools:
6449 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
6450 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
6452 ACPI 4.0: iASL - implemented compile-time validation support for all new
6453 predefined names and control methods (31 total). ACPICA BZ 769.
6455 ----------------------------------------
6456 21 May 2009. Summary of changes for version 20090521:
6458 1) ACPI CA Core Subsystem:
6460 Disabled the preservation of the SCI enable bit in the PM1 control
6462 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
6465 a "preserved" bit - "OSPM always preserves this bit position", section
6466 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
6467 because the bit needs to be explicitly set by the OS as a workaround. No
6468 machines fail if the bit is not preserved. Therefore, ACPICA no longer
6469 attempts to preserve this bit.
6471 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
6472 incorrectly formed _PRT package could cause a fault. Added validation to
6473 ensure that each package element is actually a sub-package.
6475 Implemented a new interface to install or override a single control
6477 AcpiInstallMethod. This interface is useful when debugging in order to
6479 an existing method or to install a missing method without having to
6481 the entire ACPI table. See the ACPICA Programmer Reference for use and
6482 examples. Lin Ming, Bob Moore.
6484 Fixed several reference count issues with the DdbHandle object that is
6485 created from a Load or LoadTable operator. Prevent premature deletion of
6487 object. Also, mark the object as invalid once the table has been
6489 This is needed because the handle itself may not be deleted after the
6491 unload, depending on whether it has been stored in a named object by the
6494 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
6495 mutexes of the same sync level are acquired but then not released in
6497 opposite order, the internally maintained Current Sync Level becomes
6499 and can cause subsequent execution errors. ACPICA BZ 471.
6501 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
6502 specification has been changed to make the SyncLevel for mutex objects
6504 useful. When releasing a mutex, the SyncLevel of the mutex must now be
6506 same as the current sync level. This makes more sense than the previous
6508 (SyncLevel less than or equal). This change updates the code to match the
6511 Fixed a problem with the local version of the AcpiOsPurgeCache function.
6513 (local) cache must be locked during all cache object deletions. Andrew
6516 Updated the Load operator to use operation region interfaces. This
6518 direct memory mapping with region access calls. Now, all region accesses
6520 through the installed region handler as they should.
6522 Simplified and optimized the NsGetNextNode function. Reduced parameter
6524 and reduced code for this frequently used function.
6526 Example Code and Data Size: These are the sizes for the OS-independent
6527 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6528 debug version of the code includes the debug output trace mechanism and
6530 much larger code and data size.
6533 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6534 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6536 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6537 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6539 2) iASL Compiler/Disassembler and Tools:
6541 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
6543 with sub-table disassembly and handling invalid sub-tables. Attempt
6545 after an invalid sub-table ID.
6547 ----------------------------------------
6548 22 April 2009. Summary of changes for version 20090422:
6550 1) ACPI CA Core Subsystem:
6552 Fixed a compatibility issue with the recently released I/O port
6554 mechanism. For windows compatibility, 1) On a port protection violation,
6555 simply ignore the request and do not return an exception (allow the
6557 method to continue execution.) 2) If only part of the request overlaps a
6558 protected port, read/write the individual ports that are not protected.
6562 Enhanced the execution of the ASL/AML BreakPoint operator so that it
6564 breaks into the AML debugger if the debugger is present. This matches the
6565 ACPI-defined behavior.
6567 Fixed several possible warnings related to the use of the configurable
6568 ACPI_THREAD_ID. This type can now be configured as either an integer or a
6569 pointer with no warnings. Also fixes several warnings in printf-like
6570 statements for the 64-bit build when the type is configured as a pointer.
6573 Fixed a number of possible warnings when compiling with gcc 4+ (depending
6575 warning options.) Examples include printf formats, aliasing, unused
6577 missing prototypes, missing switch default statements, use of non-ANSI
6578 library functions, use of non-ANSI constructs. See generate/unix/Makefile
6580 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
6582 Example Code and Data Size: These are the sizes for the OS-independent
6583 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6584 debug version of the code includes the debug output trace mechanism and
6586 much larger code and data size.
6589 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6590 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6592 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6593 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6595 2) iASL Compiler/Disassembler and Tools:
6597 iASL: Fixed a generation warning from Bison 2.3 and fixed several
6602 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
6604 correctly digest Windows/DOS formatted files (with CR/LF).
6606 iASL: Added a new option for "quiet mode" (-va) that produces only the
6607 compilation summary, not individual errors and warnings. Useful for large
6610 AcpiExec: Implemented a new option (-z) to enable a forced
6612 timeout that can be used to detect hang conditions during execution of
6614 code (includes both internal semaphores and AML-defined mutexes and
6617 Added new makefiles for the generation of acpica in a generic unix-like
6618 environment. These makefiles are intended to generate the acpica tools
6620 utilities from the original acpica git source tree structure.
6622 Test Suites: Updated and cleaned up the documentation files. Updated the
6623 copyrights to 2009, affecting all source files. Use the new version of
6625 with quiet mode. Increased the number of available semaphores in the
6627 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
6629 an alternate implementation of the semaphore timeout to allow aslts to
6630 execute fully on Cygwin.
6632 ----------------------------------------
6633 20 March 2009. Summary of changes for version 20090320:
6635 1) ACPI CA Core Subsystem:
6637 Fixed a possible race condition between AcpiWalkNamespace and dynamic
6639 unloads. Added a reader/writer locking mechanism to allow multiple
6641 namespace walks (readers), but block a dynamic table unload until it can
6643 exclusive write access to the namespace. This fixes a problem where a
6645 unload could (possibly catastrophically) delete the portion of the
6647 that is currently being examined by a walk. Adds a new file, utlock.c,
6649 implements the reader/writer lock mechanism. ACPICA BZ 749.
6651 Fixed a regression introduced in version 20090220 where a change to the
6653 handling could cause the ACPICA subsystem to access non-existent I/O
6656 Modified the handling of FADT register and table (FACS/DSDT) addresses.
6658 FADT can contain both 32-bit and 64-bit versions of these addresses.
6659 Previously, the 64-bit versions were favored, meaning that if both 32 and
6661 versions were valid, but not equal, the 64-bit version was used. This was
6662 found to cause some machines to fail. Now, in this case, the 32-bit
6664 is used instead. This now matches the Windows behavior.
6666 Implemented a new mechanism to protect certain I/O ports. Provides
6668 compatibility and protects the standard PC I/O ports from access via AML
6669 code. Adds a new file, hwvalid.c
6671 Fixed a possible extraneous warning message from the FADT support. The
6672 message warns of a 32/64 length mismatch between the legacy and GAS
6673 definitions for a register.
6675 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
6677 made obsolete by the port protection mechanism above. It was previously
6679 to validate the entire address range of an operation region, which could
6681 incorrect if the range included illegal ports, but fields within the
6682 operation region did not actually access those ports. Validation is now
6683 performed on a per-field basis instead of the entire region.
6685 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
6686 Ignored bits must be "preserved" according to the ACPI spec. Usually,
6688 means a read/modify/write when writing to the register. However, for
6690 registers, writing a one means clear the event. Writing a zero means
6692 the event (do not clear.) This behavior is clarified in the ACPI 4.0
6694 and the ACPICA code now simply always writes a zero to the ignored bit.
6696 Modified the handling of ignored bits for the PM1 A/B Control Registers.
6698 per the ACPI specification, for the control registers, preserve
6699 (read/modify/write) all bits that are defined as either reserved or
6702 Updated the handling of write-only bits in the PM1 A/B Control Registers.
6703 When reading the register, zero the write-only bits as per the ACPI spec.
6704 ACPICA BZ 443. Lin Ming.
6706 Removed "Linux" from the list of supported _OSI strings. Linux no longer
6707 wants to reply true to this request. The Windows strings are the only
6709 through the AML that are tested and known to work properly.
6712 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6713 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6715 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6716 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6718 2) iASL Compiler/Disassembler and Tools:
6720 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
6724 ----------------------------------------
6725 20 February 2009. Summary of changes for version 20090220:
6727 1) ACPI CA Core Subsystem:
6729 Optimized the ACPI register locking. Removed locking for reads from the
6731 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
6733 not required when reading the single-bit registers. The
6734 AcpiGetRegisterUnlocked function is no longer needed and has been
6736 This will improve performance for reads on these registers. ACPICA BZ
6739 Fixed the parameter validation for AcpiRead/Write. Now return
6740 AE_BAD_PARAMETER if the input register pointer is null, and
6743 the register has an address of zero. Previously, these cases simply
6745 AE_OK. For optional registers such as PM1B status/enable/control, the
6747 should check for a valid register address before calling. ACPICA BZ 748.
6749 Renamed the external ACPI bit register access functions. Renamed
6750 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
6751 functions. The new names are AcpiReadBitRegister and
6752 AcpiWriteBitRegister.
6753 Also, restructured the code for these functions by simplifying the code
6755 and condensing duplicate code to reduce code size.
6757 Added new functions to transparently handle the possibly split PM1 A/B
6758 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
6760 now handle the split registers for PM1 Status, Enable, and Control.
6765 Added a function to handle the PM1 control registers,
6766 AcpiHwWritePm1Control.
6767 This function writes both of the PM1 control registers (A/B). These
6769 are different than the PM1 A/B status and enable registers in that
6771 values can be written to the A/B registers. Most notably, the SLP_TYP
6773 can be different, as per the values returned from the _Sx predefined
6776 Removed an extra register write within AcpiHwClearAcpiStatus. This
6778 was writing an optional PM1B status register twice. The existing call to
6780 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
6782 register. ACPICA BZ 751.
6784 Split out the PM1 Status registers from the FADT. Added new globals for
6786 registers (A/B), similar to the way the PM1 Enable registers are handled.
6787 Instead of overloading the FADT Event Register blocks. This makes the
6789 clearer and less prone to error.
6791 Fixed the warning message for when the platform contains too many ACPI
6793 for the default size of the global root table data structure. The
6795 for the truncation value was incorrect.
6797 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
6798 obsolete macro, since it is now a simple reference to ->common.type.
6800 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
6802 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
6803 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
6804 simply SLEEP_TYPE. ACPICA BZ 754.
6806 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
6807 function is only needed on 64-bit host operating systems and is thus not
6808 included for 32-bit hosts.
6810 Debug output: print the input and result for invocations of the _OSI
6812 control method via the ACPI_LV_INFO debug level. Also, reduced some of
6814 verbosity of this debug level. Len Brown.
6816 Example Code and Data Size: These are the sizes for the OS-independent
6817 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6818 debug version of the code includes the debug output trace mechanism and
6820 much larger code and data size.
6823 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6824 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6826 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6827 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6829 2) iASL Compiler/Disassembler and Tools:
6831 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
6832 various legal performance profiles.
6834 ----------------------------------------
6835 23 January 2009. Summary of changes for version 20090123:
6837 1) ACPI CA Core Subsystem:
6839 Added the 2009 copyright to all module headers and signons. This affects
6840 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6841 the tools/utilities.
6843 Implemented a change to allow the host to override any ACPI table,
6845 dynamically loaded tables. Previously, only the DSDT could be replaced by
6847 host. With this change, the AcpiOsTableOverride interface is called for
6849 table found in the RSDT/XSDT during ACPICA initialization, and also
6851 a table is dynamically loaded via the AML Load operator.
6853 Updated FADT flag definitions, especially the Boot Architecture flags.
6855 Debugger: For the Find command, automatically pad the input ACPI name
6857 underscores if the name is shorter than 4 characters. This enables a
6859 with the actual namespace entry which is itself padded with underscores.
6861 Example Code and Data Size: These are the sizes for the OS-independent
6862 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6863 debug version of the code includes the debug output trace mechanism and
6865 much larger code and data size.
6868 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6869 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6871 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6872 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6874 2) iASL Compiler/Disassembler and Tools:
6876 Fix build error under Bison-2.4.
6878 Dissasembler: Enhanced FADT support. Added decoding of the Boot
6880 flags. Now decode all flags, regardless of the FADT version. Flag output
6881 includes the FADT version which first defined each flag.
6883 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
6885 DSDT). Windows only.
6887 ----------------------------------------
6888 04 December 2008. Summary of changes for version 20081204:
6890 1) ACPI CA Core Subsystem:
6892 The ACPICA Programmer Reference has been completely updated and revamped
6894 this release. This includes updates to the external interfaces, OSL
6895 interfaces, the overview sections, and the debugger reference.
6897 Several new ACPICA interfaces have been implemented and documented in the
6898 programmer reference:
6899 AcpiReset - Writes the reset value to the FADT-defined reset register.
6900 AcpiDisableAllGpes - Disable all available GPEs.
6901 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
6902 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
6903 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
6904 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
6905 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
6907 Most of the public ACPI hardware-related interfaces have been moved to a
6909 file, components/hardware/hwxface.c
6911 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
6912 register lengths within the FADT are now used, and the low level ACPI
6913 register access no longer hardcodes the ACPI register lengths. Given that
6914 there may be some risk in actually trusting the FADT register lengths, a
6916 time option was added to fall back to the default hardcoded lengths if
6918 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
6919 option is set to true for now, and a warning is issued if a suspicious
6921 register length is overridden with the default value.
6923 Fixed a reference count issue in NsRepairObject. This problem was
6925 in version 20081031 as part of a fix to repair Buffer objects within
6928 Added semaphore support to the Linux/Unix application OS-services layer
6929 (OSL). ACPICA BZ 448. Lin Ming.
6931 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
6933 be implemented in the OSL, or will binary semaphores be used instead.
6935 Example Code and Data Size: These are the sizes for the OS-independent
6936 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6937 debug version of the code includes the debug output trace mechanism and
6939 much larger code and data size.
6942 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6943 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6945 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6946 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6948 2) iASL Compiler/Disassembler and Tools:
6950 iASL: Completed the '-e' option to include additional ACPI tables in
6953 aid with disassembly and External statement generation. ACPICA BZ 742.
6957 iASL: Removed the "named object in while loop" error. The compiler cannot
6958 determine how many times a loop will execute. ACPICA BZ 730.
6960 Disassembler: Implemented support for FADT revision 2 (MS extension).
6964 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
6967 ----------------------------------------
6968 31 October 2008. Summary of changes for version 20081031:
6970 1) ACPI CA Core Subsystem:
6972 Restructured the ACPICA header files into public/private. acpi.h now
6974 only the "public" acpica headers. All other acpica headers are "private"
6976 should not be included by acpica users. One new file, accommon.h is used
6978 include the commonly used private headers for acpica code generation.
6980 plans include moving all private headers to a new subdirectory.
6982 Implemented an automatic Buffer->String return value conversion for
6983 predefined ACPI methods. For these methods (such as _BIF), added
6985 conversion for return objects that are required to be a String, but a
6987 was found instead. This can happen when reading string battery data from
6989 operation region, because it used to be difficult to convert the data
6991 buffer to string from within the ASL. Ensures that the host OS is
6993 with a valid null-terminated string. Linux BZ 11822.
6995 Updated the FACS waking vector interfaces. Split
6996 AcpiSetFirmwareWakingVector
6997 into two: one for the 32-bit vector, another for the 64-bit vector. This
6999 required because the host OS must setup the wake much differently for
7001 vector (real vs. protected mode, etc.) and the interface itself should
7004 deciding which vector to use. Also, eliminated the
7005 GetFirmwareWakingVector
7006 interface, as it served no purpose (only the firmware reads the vector,
7008 only writes the vector.) ACPICA BZ 731.
7010 Implemented a mechanism to escape infinite AML While() loops. Added a
7012 counter to force exit from AML While loops if the count becomes too
7014 This can occur in poorly written AML when the hardware does not respond
7015 within a while loop and the loop does not implement a timeout. The
7017 loop count is configurable. A new exception code is returned when a loop
7019 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7021 Optimized the execution of AML While loops. Previously, a control state
7022 object was allocated and freed for each execution of the loop. The
7023 optimization is to simply reuse the control state for each iteration.
7025 speeds up the raw loop execution time by about 5%.
7027 Enhanced the implicit return mechanism. For Windows compatibility, return
7029 implicit integer of value zero for methods that contain no executable
7031 Such methods are seen in the field as stubs (presumably), and can cause
7032 drivers to fail if they expect a return value. Lin Ming.
7034 Allow multiple backslashes as root prefixes in namepaths. In a fully
7035 qualified namepath, allow multiple backslash prefixes. This can happen
7037 is seen in the field) because of the use of a double-backslash in strings
7038 (since backslash is the escape character) causing confusion. ACPICA BZ
7042 Emit a warning if two different FACS or DSDT tables are discovered in the
7043 FADT. Checks if there are two valid but different addresses for the FACS
7045 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7047 Consolidated the method argument count validation code. Merged the code
7049 validates control method argument counts into the predefined validation
7050 module. Eliminates possible multiple warnings for incorrect argument
7053 Implemented ACPICA example code. Includes code for ACPICA initialization,
7054 handler installation, and calling a control method. Available at
7055 source/tools/examples.
7057 Added a global pointer for FACS table to simplify internal FACS access.
7059 the global pointer instead of using AcpiGetTableByIndex for each FACS
7061 This simplifies the code for the Global Lock and the Firmware Waking
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: 81.2K Code, 17.0K Data, 98.2K Total
7072 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7074 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7075 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7077 2) iASL Compiler/Disassembler and Tools:
7079 iASL: Improved disassembly of external method calls. Added the -e option
7081 allow the inclusion of additional ACPI tables to help with the
7084 method invocations and the generation of external declarations during the
7085 disassembly. Certain external method invocations cannot be disassembled
7086 properly without the actual declaration of the method. Use the -e option
7088 include the table where the external method(s) are actually declared.
7090 useful for disassembling SSDTs that make method calls back to the master
7091 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
7093 -e dsdt.aml ssdt1.aml
7095 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
7096 problem where the use of an alias within a namepath would result in a not
7097 found error or cause the compiler to fault. Also now allows forward
7098 references from the Alias operator itself. ACPICA BZ 738.
7100 ----------------------------------------
7101 26 September 2008. Summary of changes for version 20080926:
7103 1) ACPI CA Core Subsystem:
7105 Designed and implemented a mechanism to validate predefined ACPI methods
7107 objects. This code validates the predefined ACPI objects (objects whose
7109 start with underscore) that appear in the namespace, at the time they are
7110 evaluated. The argument count and the type of the returned object are
7111 validated against the ACPI specification. The purpose of this validation
7113 to detect problems with the BIOS-implemented predefined ACPI objects
7115 the results are returned to the ACPI-related drivers. Future enhancements
7117 include actual repair of incorrect return objects where possible. Two new
7118 files are nspredef.c and acpredef.h.
7120 Fixed a fault in the AML parser if a memory allocation fails during the
7122 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
7124 Fixed an issue with implicit return compatibility. This change improves
7126 implicit return mechanism to be more compatible with the MS interpreter.
7128 Ming, ACPICA BZ 349.
7130 Implemented support for zero-length buffer-to-string conversions. Allow
7132 length strings during interpreter buffer-to-string conversions. For
7134 during the ToDecimalString and ToHexString operators, as well as implicit
7135 conversions. Fiodor Suietov, ACPICA BZ 585.
7137 Fixed two possible memory leaks in the error exit paths of
7138 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
7140 similar in that they use a stack of state objects in order to eliminate
7141 recursion. The stack must be fully unwound and deallocated if an error
7142 occurs. Lin Ming. ACPICA BZ 383.
7144 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
7146 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
7147 Moore ACPICA BZ 442.
7149 Removed the obsolete version number in module headers. Removed the
7150 "$Revision" number that appeared in each module header. This version
7152 was useful under SourceSafe and CVS, but has no meaning under git. It is
7154 only incorrect, it could also be misleading.
7156 Example Code and Data Size: These are the sizes for the OS-independent
7157 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7158 debug version of the code includes the debug output trace mechanism and
7160 much larger code and data size.
7163 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7164 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7166 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7167 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7169 ----------------------------------------
7170 29 August 2008. Summary of changes for version 20080829:
7172 1) ACPI CA Core Subsystem:
7174 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
7175 Reference. Changes include the elimination of cheating on the Object
7177 for the DdbHandle subtype, addition of a reference class field to
7178 differentiate the various reference types (instead of an AML opcode), and
7180 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
7182 Reduce an error to a warning for an incorrect method argument count.
7183 Previously aborted with an error if too few arguments were passed to a
7184 control method via the external ACPICA interface. Now issue a warning
7186 and continue. Handles the case where the method inadvertently declares
7188 many arguments, but does not actually use the extra ones. Applies mainly
7190 the predefined methods. Lin Ming. Linux BZ 11032.
7192 Disallow the evaluation of named object types with no intrinsic value.
7194 AE_TYPE for objects that have no value and therefore evaluation is
7196 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
7198 these types were allowed, but an exception would be generated at some
7200 during the evaluation. Now, the error is generated up front.
7202 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
7203 (nsnames.c). Fixes a leak in the error exit path.
7205 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
7207 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
7209 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
7212 Removed obsolete and/or unused exception codes from the acexcep.h header.
7213 There is the possibility that certain device drivers may be affected if
7215 use any of these exceptions.
7217 The ACPICA documentation has been added to the public git source tree,
7219 acpica/documents. Included are the ACPICA programmer reference, the iASL
7220 compiler reference, and the changes.txt release logfile.
7222 Example Code and Data Size: These are the sizes for the OS-independent
7223 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7224 debug version of the code includes the debug output trace mechanism and
7226 much larger code and data size.
7229 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7230 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7232 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7233 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7235 2) iASL Compiler/Disassembler and Tools:
7237 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
7238 defines _SCP with 3 arguments. Previous versions defined it with only 1
7239 argument. iASL now allows both definitions.
7241 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
7243 length subtables when disassembling ACPI tables. Also fixed a couple of
7244 errors where a full 16-bit table type field was not extracted from the
7248 acpisrc: Improve comment counting mechanism for generating source code
7249 statistics. Count first and last lines of multi-line comments as
7251 not comment lines. Handle Linux legal header in addition to standard
7255 ----------------------------------------
7257 29 July 2008. Summary of changes for version 20080729:
7259 1) ACPI CA Core Subsystem:
7261 Fix a possible deadlock in the GPE dispatch. Remove call to
7262 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
7264 to acquire the GPE lock but can deadlock since the GPE lock is already
7266 at dispatch time. This code was introduced in version 20060831 as a
7268 to Linux BZ 6881 and has since been removed from Linux.
7270 Add a function to dereference returned reference objects. Examines the
7272 object from a call to AcpiEvaluateObject. Any Index or RefOf references
7274 automatically dereferenced in an attempt to return something useful
7276 reference types cannot be converted into an external ACPI_OBJECT.)
7278 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
7280 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
7281 subtables for the MADT and one new subtable for the SRAT. Includes
7282 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
7284 Specification, June 2008.
7286 Additional error checking for pathname utilities. Add error check after
7288 calls to AcpiNsGetPathnameLength. Add status return from
7289 AcpiNsBuildExternalPath and check after all calls. Add parameter
7291 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
7293 Return status from the global init function AcpiUtGlobalInitialize. This
7295 used by both the kernel subsystem and the utilities such as iASL
7297 The function could possibly fail when the caches are initialized. Yang
7300 Add a function to decode reference object types to strings. Created for
7301 improved error messages.
7303 Improve object conversion error messages. Better error messages during
7305 conversion from internal to the external ACPI_OBJECT. Used for external
7307 to AcpiEvaluateObject.
7309 Example Code and Data Size: These are the sizes for the OS-independent
7310 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7311 debug version of the code includes the debug output trace mechanism and
7313 much larger code and data size.
7316 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7317 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7319 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7320 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7322 2) iASL Compiler/Disassembler and Tools:
7324 Debugger: fix a possible hang when evaluating non-methods. Fixes a
7326 introduced in version 20080701. If the object being evaluated (via
7328 command) is not a method, the debugger can hang while trying to obtain
7330 existent parameters.
7332 iASL: relax error for using reserved "_T_x" identifiers. These names can
7333 appear in a disassembled ASL file if they were emitted by the original
7334 compiler. Instead of issuing an error or warning and forcing the user to
7335 manually change these names, issue a remark instead.
7337 iASL: error if named object created in while loop. Emit an error if any
7339 object is created within a While loop. If allowed, this code will
7342 run-time error on the second iteration of the loop when an attempt is
7345 create the same named object twice. ACPICA bugzilla 730.
7347 iASL: Support absolute pathnames for include files. Add support for
7349 pathnames within the Include operator. previously, only relative
7353 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
7355 The ACPI spec requires one interrupt minimum. BZ 423
7357 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
7358 Handles the case for the Interrupt Resource Descriptor where
7359 the ResourceSource argument is omitted but ResourceSourceIndex
7360 is present. Now leave room for the Index. BZ 426
7362 iASL: Prevent error message if CondRefOf target does not exist. Fixes
7364 where an error message is emitted if the target does not exist. BZ 516
7366 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
7367 (get ACPI tables on Windows). This was apparently broken in version
7370 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
7372 the EOF happens immediately after the last table in the input file. Print
7373 completion message. Previously, no message was displayed in this case.
7375 ----------------------------------------
7376 01 July 2008. Summary of changes for version 20080701:
7378 0) Git source tree / acpica.org
7380 Fixed a problem where a git-clone from http would not transfer the entire
7383 1) ACPI CA Core Subsystem:
7385 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
7386 enable bit. Now performs a read-change-write of the enable register
7388 of simply writing out the cached enable mask. This will prevent
7390 enabling of GPEs if a rogue GPE is received during initialization (before
7392 handlers are installed.)
7394 Implemented a copy for dynamically loaded tables. Previously, dynamically
7395 loaded tables were simply mapped - but on some machines this memory is
7396 corrupted after suspend. Now copy the table to a local buffer. For the
7397 OpRegion case, added checksum verify. Use the table length from the table
7398 header, not the region length. For the Buffer case, use the table length
7399 also. Dennis Noordsij, Bob Moore. BZ 10734
7401 Fixed a problem where the same ACPI table could not be dynamically loaded
7403 unloaded more than once. Without this change, a table cannot be loaded
7405 once it has been loaded/unloaded one time. The current mechanism does not
7406 unregister a table upon an unload. During a load, if the same table is
7408 this no longer returns an exception. BZ 722
7410 Fixed a problem where the wrong descriptor length was calculated for the
7411 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
7413 are calculated as 12 bytes long, but the actual length in the internal
7414 descriptor is 16 because of the round-up to 8 on the 64-bit build.
7416 by Linn Crosetto. BZ 728
7418 Fixed a possible memory leak in the Unload operator. The DdbHandle
7420 by Load() did not have its reference count decremented during unload,
7422 to a memory leak. Lin Ming. BZ 727
7424 Fixed a possible memory leak when deleting thermal/processor objects. Any
7425 associated notify handlers (and objects) were not being deleted. Fiodor
7428 Fixed the ordering of the ASCII names in the global mutex table to match
7430 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
7432 Vegard Nossum. BZ 726
7434 Enhanced the AcpiGetObjectInfo interface to return the number of required
7435 arguments if the object is a control method. Added this call to the
7437 so the proper number of default arguments are passed to a method. This
7438 prevents a warning when executing methods from AcpiExec.
7440 Added a check for an invalid handle in AcpiGetObjectInfo. Return
7441 AE_BAD_PARAMETER if input handle is invalid. BZ 474
7443 Fixed an extraneous warning from exconfig.c on the 64-bit build.
7445 Example Code and Data Size: These are the sizes for the OS-independent
7446 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7447 debug version of the code includes the debug output trace mechanism and
7449 much larger code and data size.
7452 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7453 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7455 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7456 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7458 2) iASL Compiler/Disassembler and Tools:
7460 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
7461 resource descriptor names.
7463 iASL: Detect invalid ASCII characters in input (windows version). Removed
7465 "-CF" flag from the flex compile, enables correct detection of non-ASCII
7466 characters in the input. BZ 441
7468 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
7470 "result of operation not used" warning when the DDB handle returned from
7471 LoadTable is not used. The warning is not needed. BZ 590
7473 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
7476 pass address of table to the AML. Added option to disable OpRegion
7478 to allow creation of an OpRegion with a real address that was passed to
7480 All of this allows testing of the Load and Unload operators from
7483 Debugger: update tables command for unloaded tables. Handle unloaded
7485 and use the standard table header output routine.
7487 ----------------------------------------
7488 09 June 2008. Summary of changes for version 20080609:
7490 1) ACPI CA Core Subsystem:
7492 Implemented a workaround for reversed _PRT entries. A significant number
7494 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
7495 change dynamically detects and repairs this problem. Provides
7497 with MS ACPI. BZ 6859
7499 Simplified the internal ACPI hardware interfaces to eliminate the locking
7500 flag parameter from Register Read/Write. Added a new external interface,
7501 AcpiGetRegisterUnlocked.
7503 Fixed a problem where the invocation of a GPE control method could hang.
7505 was a regression introduced in 20080514. The new method argument count
7506 validation mechanism can enter an infinite loop when a GPE method is
7507 dispatched. Problem fixed by removing the obsolete code that passed GPE
7509 information to the notify handler via the control method parameter
7512 Fixed a problem where the _SST execution status was incorrectly returned
7514 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
7516 20080514. _SST is optional and a NOT_FOUND exception should never be
7519 Fixed a problem where a deleted object could be accessed from within the
7521 parser. This was a regression introduced in version 20080123 as a fix for
7523 Unload operator. Lin Ming. BZ 10669
7525 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
7527 and eliminated the use of a negative index in a loop. Operands are now
7528 displayed in the correct order, not backwards. This also fixes a
7530 introduced in 20080514 on 64-bit systems where the elimination of
7531 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
7534 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
7536 path did not delete a locally allocated structure.
7538 Updated definitions for the DMAR and SRAT tables to synchronize with the
7539 current specifications. Includes disassembler support.
7541 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
7542 loop termination value was used. Loop terminated on iteration early,
7544 one mutex. Linn Crosetto
7546 Example Code and Data Size: These are the sizes for the OS-independent
7547 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7548 debug version of the code includes the debug output trace mechanism and
7550 much larger code and data size.
7553 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7554 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7556 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7557 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7559 2) iASL Compiler/Disassembler and Tools:
7561 Disassembler: Implemented support for EisaId() within _CID objects. Now
7562 disassemble integer _CID objects back to EisaId invocations, including
7563 multiple integers within _CID packages. Includes single-step support for
7566 Disassembler: Added support for DMAR and SRAT table definition changes.
7568 ----------------------------------------
7569 14 May 2008. Summary of changes for version 20080514:
7571 1) ACPI CA Core Subsystem:
7573 Fixed a problem where GPEs were enabled too early during the ACPICA
7574 initialization. This could lead to "handler not installed" errors on some
7575 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
7577 ensures that all operation regions and devices throughout the namespace
7579 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
7581 Implemented a change to the enter sleep code. Moved execution of the _GTS
7582 method to just before setting sleep enable bit. The execution was moved
7584 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
7585 immediately before the SLP_EN bit is set, as per the ACPI specification.
7588 Implemented a fix to disable unknown GPEs (2nd version). Now always
7590 the GPE, even if ACPICA thinks that that it is already disabled. It is
7591 possible that the AML or some other code has enabled the GPE unbeknownst
7595 Fixed a problem with the Field operator where zero-length fields would
7597 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
7599 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
7601 Implemented a fix for the Load operator, now load the table at the
7603 root. This reverts a change introduced in version 20071019. The table is
7605 loaded at the namespace root even though this goes against the ACPI
7606 specification. This provides compatibility with other ACPI
7608 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
7611 Fixed a problem where ACPICA would not Load() tables with unusual
7613 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
7614 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
7615 Therefore, signature validation is worthless. Apparently MS ACPI accepts
7617 signatures, ACPICA must be compatible. BZ 10454.
7619 Fixed a possible negative array index in AcpiUtValidateException. Added
7621 fields to the exception string arrays to eliminate a -1 subtraction on
7625 Updated the debug tracking macros to reduce overall code and data size.
7626 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
7627 instead of pointers to static strings. Jan Beulich and Bob Moore.
7629 Implemented argument count checking in control method invocation via
7630 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
7632 many. This applies only to extern programmatic control method execution,
7634 method-to-method calls within the AML. Lin Ming.
7636 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
7638 longer needed, especially with the removal of 16-bit support. It was
7640 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
7643 32/64-bit platforms is required.
7645 Added the C const qualifier for appropriate string constants -- mostly
7646 MODULE_NAME and printf format strings. Jan Beulich.
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: 80.0K Code, 17.4K Data, 97.4K Total
7656 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7658 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7659 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7661 2) iASL Compiler/Disassembler and Tools:
7663 Implemented ACPI table revision ID validation in the disassembler. Zero
7665 always invalid. For DSDTs, the ID controls the interpreter integer width.
7667 means 32-bit and this is unusual. 2 or greater is 64-bit.
7669 ----------------------------------------
7670 21 March 2008. Summary of changes for version 20080321:
7672 1) ACPI CA Core Subsystem:
7674 Implemented an additional change to the GPE support in order to suppress
7675 spurious or stray GPEs. The AcpiEvDisableGpe function will now
7677 disable incoming GPEs that are neither enabled nor disabled -- meaning
7679 the GPE is unknown to the system. This should prevent future interrupt
7681 from that GPE. BZ 6217 (Zhang Rui)
7683 Fixed a problem where NULL package elements were not returned to the
7684 AcpiEvaluateObject interface correctly. The element was simply ignored
7685 instead of returning a NULL ACPI_OBJECT package element, potentially
7687 a buffer overflow and/or confusing the caller who expected a fixed number
7689 elements. BZ 10132 (Lin Ming, Bob Moore)
7691 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
7693 Qword), Field, BankField, and IndexField operators when invoked from
7695 an executing control method. In this case, these operators created
7697 nodes that were incorrectly left marked as permanent nodes instead of
7698 temporary nodes. This could cause a problem if there is race condition
7699 between an exiting control method and a running namespace walk. (Reported
7703 Fixed a problem where the CreateField and CreateXXXField operators would
7704 incorrectly allow duplicate names (the name of the field) with no
7708 Implemented several changes for Notify handling. Added support for new
7710 values (ACPI 2.0+) and improved the Notify debug output. Notify on
7711 PowerResource objects is no longer allowed, as per the ACPI
7713 (Bob Moore, Zhang Rui)
7715 All Reference Objects returned via the AcpiEvaluateObject interface are
7717 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
7719 NULL objects - either NULL package elements or unresolved named
7722 Fixed a problem where an extraneous debug message was produced for
7724 objects (when debugging enabled). The message "Package List length larger
7725 than NumElements count" is now produced in the correct case, and is now
7727 error message rather than a debug message. Added a debug message for the
7728 opposite case, where NumElements is larger than the Package List (the
7730 will be padded out with NULL elements as per the ACPI spec.)
7732 Implemented several improvements for the output of the ASL "Debug" object
7734 clarify and keep all data for a given object on one output line.
7736 Fixed two size calculation issues with the variable-length Start
7738 resource descriptor.
7740 Example Code and Data Size: These are the sizes for the OS-independent
7741 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7742 debug version of the code includes the debug output trace mechanism and
7744 a much larger code and data size.
7747 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7748 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7750 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7751 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7753 2) iASL Compiler/Disassembler and Tools:
7755 Fixed a problem with the use of the Switch operator where execution of
7757 containing method by multiple concurrent threads could cause an
7758 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
7759 actual Switch opcode, it must be simulated with local named temporary
7760 variables and if/else pairs. The solution chosen was to mark any method
7762 uses Switch as Serialized, thus preventing multiple thread entries. BZ
7765 ----------------------------------------
7766 13 February 2008. Summary of changes for version 20080213:
7768 1) ACPI CA Core Subsystem:
7770 Implemented another MS compatibility design change for GPE/Notify
7772 GPEs are now cleared/enabled asynchronously to allow all pending notifies
7774 complete first. It is expected that the OSL will queue the enable request
7775 behind all pending notify requests (may require changes to the local host
7777 in AcpiOsExecute). Alexey Starikovskiy.
7779 Fixed a problem where buffer and package objects passed as arguments to a
7780 control method via the external AcpiEvaluateObject interface could cause
7782 AE_AML_INTERNAL exception depending on the order and type of operators
7783 executed by the target control method.
7785 Fixed a problem where resource descriptor size optimization could cause a
7786 problem when a _CRS resource template is passed to a _SRS method. The
7788 resource template must use the same descriptors (with the same size) as
7789 returned from _CRS. This change affects the following resource
7791 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
7794 Fixed a problem where a CopyObject to RegionField, BankField, and
7796 objects did not perform an implicit conversion as it should. These types
7798 retain their initial type permanently as per the ACPI specification.
7800 a CopyObject to all other object types should not perform an implicit
7801 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
7803 Fixed a problem with the AcpiGetDevices interface where the mechanism to
7804 match device CIDs did not examine the entire list of available CIDs, but
7805 instead aborted on the first non-matching CID. Andrew Patterson.
7807 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
7809 inadvertently changed to return a 16-bit value instead of a 32-bit value,
7810 truncating the upper dword of a 64-bit value. This macro is only used to
7811 display debug output, so no incorrect calculations were made. Also,
7812 reimplemented the macro so that a 64-bit shift is not performed by
7813 inefficient compilers.
7815 Added missing va_end statements that should correspond with each va_start
7818 Example Code and Data Size: These are the sizes for the OS-independent
7819 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7820 debug version of the code includes the debug output trace mechanism and
7822 a much larger code and data size.
7825 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7826 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7828 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7829 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7831 2) iASL Compiler/Disassembler and Tools:
7833 Implemented full disassembler support for the following new ACPI tables:
7834 BERT, EINJ, and ERST. Implemented partial disassembler support for the
7835 complicated HEST table. These tables support the Windows Hardware Error
7836 Architecture (WHEA).
7838 ----------------------------------------
7839 23 January 2008. Summary of changes for version 20080123:
7841 1) ACPI CA Core Subsystem:
7843 Added the 2008 copyright to all module headers and signons. This affects
7844 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7845 the tools/utilities.
7847 Fixed a problem with the SizeOf operator when used with Package and
7849 objects. These objects have deferred execution for some arguments, and
7851 execution is now completed before the SizeOf is executed. This problem
7853 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
7857 Implemented an enhancement to the interpreter "slack mode". In the
7860 an explicit return or an implicitly returned object from the last
7862 opcode, a control method will now implicitly return an integer of value 0
7864 Microsoft compatibility. (Lin Ming) BZ 392
7866 Fixed a problem with the Load operator where an exception was not
7869 the case where the table is already loaded. (Lin Ming) BZ 463
7871 Implemented support for the use of DDBHandles as an Indexed Reference, as
7873 the ACPI spec. (Lin Ming) BZ 486
7875 Implemented support for UserTerm (Method invocation) for the Unload
7877 as per the ACPI spec. (Lin Ming) BZ 580
7879 Fixed a problem with the LoadTable operator where the OemId and
7881 input strings could cause unexpected failures if they were shorter than
7883 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
7885 Implemented support for UserTerm (Method invocation) for the Unload
7887 as per the ACPI spec. (Lin Ming) BZ 580
7889 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
7891 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
7893 Example Code and Data Size: These are the sizes for the OS-independent
7894 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7895 debug version of the code includes the debug output trace mechanism and
7897 a much larger code and data size.
7900 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7901 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7903 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7904 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7906 2) iASL Compiler/Disassembler and Tools:
7908 Implemented support in the disassembler for checksum validation on
7910 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
7912 header dump at the start of the disassembly.
7914 Implemented additional debugging information in the namespace listing
7916 created during compilation. In addition to the namespace hierarchy, the
7918 pathname to each namespace object is displayed.
7920 Fixed a problem with the disassembler where invalid ACPI tables could
7922 faults or infinite loops.
7924 Fixed an unexpected parse error when using the optional "parameter types"
7925 list in a control method declaration. (Lin Ming) BZ 397
7927 Fixed a problem where two External declarations with the same name did
7929 cause an error (Lin Ming) BZ 509
7931 Implemented support for full TermArgs (adding Argx, Localx and method
7932 invocation) for the ParameterData parameter to the LoadTable operator.
7936 ----------------------------------------
7937 19 December 2007. Summary of changes for version 20071219:
7939 1) ACPI CA Core Subsystem:
7941 Implemented full support for deferred execution for the TermArg string
7942 arguments for DataTableRegion. This enables forward references and full
7943 operand resolution for the three string arguments. Similar to
7945 deferred argument execution.) Lin Ming. BZ 430
7947 Implemented full argument resolution support for the BankValue argument
7949 BankField. Previously, only constants were supported, now any TermArg may
7951 used. Lin Ming BZ 387, 393
7953 Fixed a problem with AcpiGetDevices where the search of a branch of the
7954 device tree could be terminated prematurely. In accordance with the ACPI
7955 specification, the search down the current branch is terminated if a
7957 is both not present and not functional (instead of just not present.)
7961 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
7963 the underlying AML code changed the GPE enable registers. Now, any
7965 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
7967 instead of simply ignored. Rui Zhang.
7969 Fixed a problem with Index Fields where the Index register was
7971 limited to a maximum of 32 bits. Now any size may be used.
7973 Fixed a couple memory leaks associated with "implicit return" objects
7975 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
7977 Example Code and Data Size: These are the sizes for the OS-independent
7978 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7979 debug version of the code includes the debug output trace mechanism and
7981 a much larger code and data size.
7984 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7985 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7987 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7988 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7990 ----------------------------------------
7991 14 November 2007. Summary of changes for version 20071114:
7993 1) ACPI CA Core Subsystem:
7995 Implemented event counters for each of the Fixed Events, the ACPI SCI
7996 (interrupt) itself, and control methods executed. Named
7997 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
7999 should be useful for debugging and statistics.
8001 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8002 contents of the various event counters. Returns the current values for
8003 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8004 AcpiMethodCount. The interface can be expanded in the future if new
8006 are added. Device drivers should use this interface rather than access
8010 Fixed a problem with the FromBCD and ToBCD operators. With some
8012 the ShortDivide function worked incorrectly, causing problems with the
8014 functions with large input values. A truncation from 64-bit to 32-bit
8015 inadvertently occurred. Internal BZ 435. Lin Ming
8017 Fixed a problem with Index references passed as method arguments.
8019 passed as arguments to control methods were dereferenced immediately
8021 control was passed to the called method). The references are now
8023 passed directly to the called method. BZ 5389. Lin Ming
8025 Fixed a problem with CopyObject used in conjunction with the Index
8027 The reference was incorrectly dereferenced before the copy. The reference
8029 now correctly copied. BZ 5391. Lin Ming
8031 Fixed a problem with Control Method references within Package objects.
8033 references are now correctly generated. This completes the package
8034 construction overhaul that began in version 20071019.
8036 Example Code and Data Size: These are the sizes for the OS-independent
8037 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8038 debug version of the code includes the debug output trace mechanism and
8040 a much larger code and data size.
8043 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8044 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8046 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8047 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8050 2) iASL Compiler/Disassembler and Tools:
8052 The AcpiExec utility now installs handlers for all of the predefined
8053 Operation Region types. New types supported are: PCI_Config, CMOS, and
8056 Fixed a problem with the 64-bit version of AcpiExec where the extended
8058 bit) address fields for the DSDT and FACS within the FADT were not being
8059 used, causing truncation of the upper 32-bits of these addresses. Lin
8063 ----------------------------------------
8064 19 October 2007. Summary of changes for version 20071019:
8066 1) ACPI CA Core Subsystem:
8068 Fixed a problem with the Alias operator when the target of the alias is a
8069 named ASL operator that opens a new scope -- Scope, Device,
8071 Processor, and ThermalZone. In these cases, any children of the original
8072 operator could not be accessed via the alias, potentially causing
8074 AE_NOT_FOUND exceptions. (BZ 9067)
8076 Fixed a problem with the Package operator where all named references were
8077 created as object references and left otherwise unresolved. According to
8079 ACPI specification, a Package can only contain Data Objects or references
8081 control methods. The implication is that named references to Data Objects
8082 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
8083 immediately upon package creation. This is the approach taken with this
8084 change. References to all other named objects (Methods, Devices, Scopes,
8085 etc.) are all now properly created as reference objects. (BZ 5328)
8087 Reverted a change to Notify handling that was introduced in version
8088 20070508. This version changed the Notify handling from asynchronous to
8089 fully synchronous (Device driver Notify handling with respect to the
8091 ASL operator). It was found that this change caused more problems than it
8092 solved and was removed by most users.
8094 Fixed a problem with the Increment and Decrement operators where the type
8096 the target object could be unexpectedly and incorrectly changed. (BZ 353)
8099 Fixed a problem with the Load and LoadTable operators where the table
8100 location within the namespace was ignored. Instead, the table was always
8101 loaded into the root or current scope. Lin Ming.
8103 Fixed a problem with the Load operator when loading a table from a buffer
8104 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
8106 Fixed a problem with the Debug object where a store of a DdbHandle
8108 object to the Debug object could cause a fault.
8110 Added a table checksum verification for the Load operator, in the case
8112 the load is from a buffer. (BZ 578).
8114 Implemented additional parameter validation for the LoadTable operator.
8116 length of the input strings SignatureString, OemIdString, and OemTableId
8118 now checked for maximum lengths. (BZ 582) Lin Ming.
8120 Example Code and Data Size: These are the sizes for the OS-independent
8121 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8122 debug version of the code includes the debug output trace mechanism and
8124 a much larger code and data size.
8127 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8128 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8130 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8131 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8134 2) iASL Compiler/Disassembler:
8136 Fixed a problem where if a single file was specified and the file did not
8137 exist, no error message was emitted. (Introduced with wildcard support in
8140 ----------------------------------------
8141 19 September 2007. Summary of changes for version 20070919:
8143 1) ACPI CA Core Subsystem:
8145 Designed and implemented new external interfaces to install and remove
8146 handlers for ACPI table-related events. Current events that are defined
8148 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
8149 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
8150 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
8152 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
8153 (acpi_serialized option on Linux) could cause some systems to hang during
8154 initialization. (Bob Moore) BZ 8171
8156 Fixed a problem where objects of certain types (Device, ThermalZone,
8157 Processor, PowerResource) can be not found if they are declared and
8158 referenced from within the same control method (Lin Ming) BZ 341
8160 Example Code and Data Size: These are the sizes for the OS-independent
8161 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8162 debug version of the code includes the debug output trace mechanism and
8164 a much larger code and data size.
8167 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8168 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8170 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8171 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8174 2) iASL Compiler/Disassembler:
8176 Implemented support to allow multiple files to be compiled/disassembled
8179 single invocation. This includes command line wildcard support for both
8181 Windows and Unix versions of the compiler. This feature simplifies the
8182 disassembly and compilation of multiple ACPI tables in a single
8185 ----------------------------------------
8186 08 May 2007. Summary of changes for version 20070508:
8188 1) ACPI CA Core Subsystem:
8190 Implemented a Microsoft compatibility design change for the handling of
8192 Notify AML operator. Previously, notify handlers were dispatched and
8193 executed completely asynchronously in a deferred thread. The new design
8194 still executes the notify handlers in a different thread, but the
8196 thread that executed the Notify() now waits at a synchronization point
8198 the notify handler to complete. Some machines depend on a synchronous
8200 operator in order to operate correctly.
8202 Implemented support to allow Package objects to be passed as method
8203 arguments to the external AcpiEvaluateObject interface. Previously, this
8204 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
8205 implemented since there were no reserved control methods that required it
8208 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
8210 contained invalid non-zero values in reserved fields could cause later
8211 failures because these fields have meaning in later revisions of the
8213 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
8215 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
8217 Fixed a problem where the Global Lock handle was not properly updated if
8219 thread that acquired the Global Lock via executing AML code then
8221 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
8225 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
8226 could be corrupted if the interrupt being removed was at the head of the
8227 list. Reported by Linn Crosetto.
8229 Example Code and Data Size: These are the sizes for the OS-independent
8230 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8231 debug version of the code includes the debug output trace mechanism and
8233 a much larger code and data size.
8236 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8237 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8239 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8240 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8242 ----------------------------------------
8243 20 March 2007. Summary of changes for version 20070320:
8245 1) ACPI CA Core Subsystem:
8247 Implemented a change to the order of interpretation and evaluation of AML
8248 operand objects within the AML interpreter. The interpreter now evaluates
8249 operands in the order that they appear in the AML stream (and the
8250 corresponding ASL code), instead of in the reverse order (after the
8252 operand list has been parsed). The previous behavior caused several
8254 incompatibilities with the Microsoft AML interpreter as well as being
8255 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
8257 Implemented a change to the ACPI Global Lock support. All interfaces to
8259 global lock now allow the same thread to acquire the lock multiple times.
8260 This affects the AcpiAcquireGlobalLock external interface to the global
8262 as well as the internal use of the global lock to support AML fields -- a
8263 control method that is holding the global lock can now simultaneously
8265 AML fields that require global lock protection. Previously, in both
8267 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
8269 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
8270 Controller. There is no change to the behavior of the AML Acquire
8272 as this can already be used to acquire a mutex multiple times by the same
8273 thread. BZ 8066. With assistance from Alexey Starikovskiy.
8275 Fixed a problem where invalid objects could be referenced in the AML
8276 Interpreter after error conditions. During operand evaluation, ensure
8278 the internal "Return Object" field is cleared on error and only valid
8279 pointers are stored there. Caused occasional access to deleted objects
8281 resulted in "large reference count" warning messages. Valery Podrezov.
8283 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
8285 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
8288 Fixed an internal problem with the handling of result objects on the
8289 interpreter result stack. BZ 7872. Valery Podrezov.
8291 Removed obsolete code that handled the case where AML_NAME_OP is the
8293 of a reference (Reference.Opcode). This code was no longer necessary. BZ
8294 7874. Valery Podrezov.
8296 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
8299 remnant from the previously discontinued 16-bit support.
8301 Example Code and Data Size: These are the sizes for the OS-independent
8302 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8303 debug version of the code includes the debug output trace mechanism and
8305 a much larger code and data size.
8308 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8309 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8311 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8312 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8314 ----------------------------------------
8315 26 January 2007. Summary of changes for version 20070126:
8317 1) ACPI CA Core Subsystem:
8319 Added the 2007 copyright to all module headers and signons. This affects
8320 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8323 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
8324 during a table load. A bad pointer was passed in the case where the DSDT
8326 overridden, causing a fault in this case.
8328 Example Code and Data Size: These are the sizes for the OS-independent
8329 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8330 debug version of the code includes the debug output trace mechanism and
8332 a much larger code and data size.
8335 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8336 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8338 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8339 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8341 ----------------------------------------
8342 15 December 2006. Summary of changes for version 20061215:
8344 1) ACPI CA Core Subsystem:
8346 Support for 16-bit ACPICA has been completely removed since it is no
8348 necessary and it clutters the code. All 16-bit macros, types, and
8349 conditional compiles have been removed, cleaning up and simplifying the
8351 across the entire subsystem. DOS support is no longer needed since the
8352 bootable Linux firmware kit is now available.
8354 The handler for the Global Lock is now removed during AcpiTerminate to
8355 enable a clean subsystem restart, via the implementation of the
8356 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
8359 Implemented enhancements to the multithreading support within the
8361 to enable improved multithreading debugging and evaluation of the
8365 Debugger: Enhanced the Statistics/Memory command to emit the total
8367 memory used during the execution, as well as the maximum memory consumed
8369 each of the various object types. (Valery Podrezov)
8371 Example Code and Data Size: These are the sizes for the OS-independent
8372 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8373 debug version of the code includes the debug output trace mechanism and
8375 a much larger code and data size.
8378 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8379 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8381 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8382 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8385 2) iASL Compiler/Disassembler and Tools:
8387 AcpiExec: Implemented a new option (-m) to display full memory use
8388 statistics upon subsystem/program termination. (Valery Podrezov)
8390 ----------------------------------------
8391 09 November 2006. Summary of changes for version 20061109:
8393 1) ACPI CA Core Subsystem:
8395 Optimized the Load ASL operator in the case where the source operand is
8397 operation region. Simply map the operation region memory, instead of
8398 performing a bytewise read. (Region must be of type SystemMemory, see
8401 Fixed the Load ASL operator for the case where the source operand is a
8402 region field. A buffer object is also allowed as the source operand. BZ
8405 Fixed a problem where the Load ASL operator allowed the source operand to
8407 an operation region of any type. It is now restricted to regions of type
8408 SystemMemory, as per the ACPI specification. BZ 481
8410 Additional cleanup and optimizations for the new Table Manager code.
8412 AcpiEnable will now fail if all of the required ACPI tables are not
8414 (FADT, FACS, DSDT). BZ 477
8416 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
8418 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
8419 manually optimized to be aligned and will not work if it is byte-packed.
8421 Example Code and Data Size: These are the sizes for the OS-independent
8422 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8423 debug version of the code includes the debug output trace mechanism and
8425 a much larger code and data size.
8428 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8429 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8431 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8432 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8435 2) iASL Compiler/Disassembler and Tools:
8437 Fixed a problem where the presence of the _OSI predefined control method
8438 within complex expressions could cause an internal compiler error.
8440 AcpiExec: Implemented full region support for multiple address spaces.
8441 SpaceId is now part of the REGION object. BZ 429
8443 ----------------------------------------
8444 11 October 2006. Summary of changes for version 20061011:
8446 1) ACPI CA Core Subsystem:
8448 Completed an AML interpreter performance enhancement for control method
8449 execution. Previously a 2-pass parse/execution, control methods are now
8450 completely parsed and executed in a single pass. This improves overall
8451 interpreter performance by ~25%, reduces code size, and reduces CPU stack
8452 use. (Valery Podrezov + interpreter changes in version 20051202 that
8453 eliminated namespace loading during the pass one parse.)
8455 Implemented _CID support for PCI Root Bridge detection. If the _HID does
8457 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
8459 obtained and also checked for an ID match.
8461 Implemented additional support for the PCI _ADR execution: upsearch until
8463 device scope is found before executing _ADR. This allows PCI_Config
8464 operation regions to be declared locally within control methods
8468 Fixed a problem with a possible race condition between threads executing
8469 AcpiWalkNamespace and the AML interpreter. This condition was removed by
8470 modifying AcpiWalkNamespace to (by default) ignore all temporary
8472 entries created during any concurrent control method execution. An
8473 additional namespace race condition is known to exist between
8474 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
8477 Restructured the AML ParseLoop function, breaking it into several
8478 subfunctions in order to reduce CPU stack use and improve
8482 AcpiGetHandle: Fix for parameter validation to detect invalid
8484 of prefix handle and pathname. BZ 478
8486 Example Code and Data Size: These are the sizes for the OS-independent
8487 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8488 debug version of the code includes the debug output trace mechanism and
8490 a much larger code and data size.
8493 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8494 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8496 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8497 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8499 2) iASL Compiler/Disassembler and Tools:
8501 Ported the -g option (get local ACPI tables) to the new ACPICA Table
8503 to restore original behavior.
8505 ----------------------------------------
8506 27 September 2006. Summary of changes for version 20060927:
8508 1) ACPI CA Core Subsystem:
8510 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
8511 These functions now use a spinlock for mutual exclusion and the interrupt
8512 level indication flag is not needed.
8514 Fixed a problem with the Global Lock where the lock could appear to be
8515 obtained before it is actually obtained. The global lock semaphore was
8516 inadvertently created with one unit instead of zero units. (BZ 464)
8520 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
8522 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
8524 Example Code and Data Size: These are the sizes for the OS-independent
8525 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8526 debug version of the code includes the debug output trace mechanism and
8528 a much larger code and data size.
8531 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8532 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8534 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8535 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8538 2) iASL Compiler/Disassembler and Tools:
8540 Fixed a compilation problem with the pre-defined Resource Descriptor
8542 names where an "object does not exist" error could be incorrectly
8544 if the parent ResourceTemplate pathname places the template within a
8545 different namespace scope than the current scope. (BZ 7212)
8547 Fixed a problem where the compiler could hang after syntax errors
8549 in an ElseIf construct. (BZ 453)
8551 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
8552 operator. An incorrect output filename was produced when this parameter
8554 a null string (""). Now, the original input filename is used as the AML
8555 output filename, with an ".aml" extension.
8557 Implemented a generic batch command mode for the AcpiExec utility
8559 any AML debugger command) (Valery Podrezov).
8561 ----------------------------------------
8562 12 September 2006. Summary of changes for version 20060912:
8564 1) ACPI CA Core Subsystem:
8566 Enhanced the implementation of the "serialized mode" of the interpreter
8567 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
8568 specified, instead of creating a serialization semaphore per control
8570 the interpreter lock is simply no longer released before a blocking
8571 operation during control method execution. This effectively makes the AML
8572 Interpreter single-threaded. The overhead of a semaphore per-method is
8575 Fixed a regression where an error was no longer emitted if a control
8577 attempts to create 2 objects of the same name. This once again returns
8578 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
8580 will dynamically serialize the control method to possible prevent future
8583 Integrated a fix for a problem with PCI Express HID detection in the PCI
8584 Config Space setup procedure. (BZ 7145)
8586 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
8587 AcpiHwInitialize function - the FADT registers are now validated when the
8590 Added two new warnings during FADT verification - 1) if the FADT is
8592 than the largest known FADT version, and 2) if there is a mismatch
8595 32-bit block address and the 64-bit X counterpart (when both are non-
8598 Example Code and Data Size: These are the sizes for the OS-independent
8599 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8600 debug version of the code includes the debug output trace mechanism and
8602 a much larger code and data size.
8605 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8606 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8608 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8609 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8612 2) iASL Compiler/Disassembler and Tools:
8614 Fixed a problem with the implementation of the Switch() operator where
8616 temporary variable was declared too close to the actual Switch, instead
8618 at method level. This could cause a problem if the Switch() operator is
8619 within a while loop, causing an error on the second iteration. (BZ 460)
8621 Disassembler - fix for error emitted for unknown type for target of scope
8622 operator. Now, ignore it and continue.
8624 Disassembly of an FADT now verifies the input FADT and reports any errors
8625 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
8627 Disassembly of raw data buffers with byte initialization data now
8629 each output line with the current buffer offset.
8631 Disassembly of ASF! table now includes all variable-length data fields at
8632 the end of some of the subtables.
8634 The disassembler now emits a comment if a buffer appears to be a
8635 ResourceTemplate, but cannot be disassembled as such because the EndTag
8637 not appear at the very end of the buffer.
8639 AcpiExec - Added the "-t" command line option to enable the serialized
8641 of the AML interpreter.
8643 ----------------------------------------
8644 31 August 2006. Summary of changes for version 20060831:
8646 1) ACPI CA Core Subsystem:
8648 Miscellaneous fixes for the Table Manager:
8649 - Correctly initialize internal common FADT for all 64-bit "X" fields
8650 - Fixed a couple table mapping issues during table load
8651 - Fixed a couple alignment issues for IA64
8652 - Initialize input array to zero in AcpiInitializeTables
8653 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
8656 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
8658 immediately disabled to prevent the waking GPE from firing again and to
8659 prevent other wake GPEs from interrupting the wake process.
8661 Added the AcpiGpeCount global that tracks the number of processed GPEs,
8663 be used for debugging systems with a large number of ACPI interrupts.
8665 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
8666 both the ACPICA headers and the disassembler.
8668 Example Code and Data Size: These are the sizes for the OS-independent
8669 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8670 debug version of the code includes the debug output trace mechanism and
8672 a much larger code and data size.
8675 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8676 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8678 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8679 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8682 2) iASL Compiler/Disassembler and Tools:
8684 Disassembler support for the DMAR ACPI table.
8686 ----------------------------------------
8687 23 August 2006. Summary of changes for version 20060823:
8689 1) ACPI CA Core Subsystem:
8691 The Table Manager component has been completely redesigned and
8692 reimplemented. The new design is much simpler, and reduces the overall
8694 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
8696 now possible to obtain the ACPI tables very early during kernel
8697 initialization, even before dynamic memory management is initialized.
8698 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
8700 Obsolete ACPICA interfaces:
8702 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
8705 - AcpiLoadTable: Not needed.
8706 - AcpiUnloadTable: Not needed.
8708 New ACPICA interfaces:
8710 - AcpiInitializeTables: Must be called before the table manager can be
8712 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
8713 allocated memory after it becomes available.
8714 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
8718 Other ACPICA changes:
8720 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
8722 AcpiOsUnmapMemory to free this mapping.
8723 - AcpiGetTable returns the actual mapped table. The mapping is managed
8724 internally and must not be deleted by the caller. Use of this interface
8725 causes no additional dynamic memory allocation.
8726 - AcpiFindRootPointer: Support for physical addressing has been
8728 it appeared to be unused.
8729 - The interface to AcpiOsMapMemory has changed to be consistent with the
8730 other allocation interfaces.
8731 - The interface to AcpiOsGetRootPointer has changed to eliminate
8734 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
8736 bit platforms. Was previously 64 bits on all platforms.
8737 - The interface to the ACPI Global Lock acquire/release macros have
8739 slightly since ACPICA no longer keeps a local copy of the FACS with a
8740 constructed pointer to the actual global lock.
8742 Porting to the new table manager:
8744 - AcpiInitializeTables: Must be called once, and can be called anytime
8745 during the OS initialization process. It allows the host to specify an
8747 of memory to be used to store the internal version of the RSDT/XSDT (root
8748 table). This allows the host to access ACPI tables before memory
8750 is initialized and running.
8751 - AcpiReallocateRootTable: Can be called after memory management is
8753 to copy the root table to a dynamically allocated array, freeing up the
8754 scratch memory specified in the call to AcpiInitializeTables.
8755 - AcpiSubsystemInitialize: This existing interface is independent of the
8756 Table Manager, and does not have to be called before the Table Manager
8758 be used, it only must be called before the rest of ACPICA can be used.
8759 - ACPI Tables: Some changes have been made to the names and structure of
8761 actbl.h and actbl1.h header files and may require changes to existing
8763 For example, bitfields have been completely removed because of their lack
8765 portability across C compilers.
8766 - Update interfaces to the Global Lock acquire/release macros if local
8767 versions are used. (see acwin.h)
8769 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
8773 Example Code and Data Size: These are the sizes for the OS-independent
8774 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8775 debug version of the code includes the debug output trace mechanism and
8777 a much larger code and data size.
8780 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8781 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8783 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8784 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8787 2) iASL Compiler/Disassembler and Tools:
8789 No changes for this release.
8791 ----------------------------------------
8792 21 July 2006. Summary of changes for version 20060721:
8794 1) ACPI CA Core Subsystem:
8796 The full source code for the ASL test suite used to validate the iASL
8797 compiler and the ACPICA core subsystem is being released with the ACPICA
8798 source for the first time. The source is contained in a separate package
8800 consists of over 1100 files that exercise all ASL/AML operators. The
8802 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
8806 Completed a new design and implementation for support of the ACPI Global
8807 Lock. On the OS side, the global lock is now treated as a standard AML
8808 mutex. Previously, multiple OS threads could "acquire" the global lock
8809 simultaneously. However, this could cause the BIOS to be starved out of
8811 lock - especially in cases such as the Embedded Controller driver where
8812 there is a tight coupling between the OS and the BIOS.
8814 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
8815 The Global Lock interrupt handler no longer queues the execution of a
8816 separate thread to signal the global lock semaphore. Instead, the
8818 is signaled directly from the interrupt handler.
8820 Implemented support within the AML interpreter for package objects that
8821 contain a larger AML length (package list length) than the package
8823 count. In this case, the length of the package is truncated to match the
8824 package element count. Some BIOS code apparently modifies the package
8826 on the fly, and this change supports this behavior. Provides
8828 with the MS AML interpreter. (With assistance from Fiodor Suietov)
8830 Implemented a temporary fix for the BankValue parameter of a Bank Field
8832 support all constant values, now including the Zero and One opcodes.
8833 Evaluation of this parameter must eventually be converted to a full
8835 evaluation. A not-implemented error is now returned (temporarily) for
8837 constant values for this parameter.
8839 Fixed problem reports (Fiodor Suietov) integrated:
8840 - Fix for premature object deletion after CopyObject on Operation Region
8844 Example Code and Data Size: These are the sizes for the OS-independent
8845 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8846 debug version of the code includes the debug output trace mechanism and
8848 a much larger code and data size.
8851 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
8852 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
8854 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8855 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8858 2) iASL Compiler/Disassembler and Tools:
8860 No changes for this release.
8862 ----------------------------------------
8863 07 July 2006. Summary of changes for version 20060707:
8865 1) ACPI CA Core Subsystem:
8867 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
8868 that do not allow the initialization of address pointers within packed
8869 structures - even though the hardware itself may support misaligned
8870 transfers. Some of the debug data structures are packed by default to
8873 Added an error message for the case where AcpiOsGetThreadId() returns
8875 A non-zero value is required by the core ACPICA code to ensure the proper
8876 operation of AML mutexes and recursive control methods.
8878 The DSDT is now the only ACPI table that determines whether the AML
8879 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
8881 the hooks for per-table 32/64 switching have been removed from the code.
8883 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
8885 Fixed a possible leak of an OwnerID in the error path of
8886 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
8887 deletion to a single place in AcpiTbUninstallTable to correct possible
8889 when using the AcpiTbDeleteTablesByType interface (with assistance from
8892 Fixed a problem with Serialized control methods where the semaphore
8893 associated with the method could be over-signaled after multiple method
8896 Fixed two issues with the locking of the internal namespace data
8898 Both the Unload() operator and AcpiUnloadTable interface now lock the
8899 namespace during the namespace deletion associated with the table unload
8900 (with assistance from Linn Crosetto.)
8902 Fixed problem reports (Valery Podrezov) integrated:
8903 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
8905 Fixed problem reports (Fiodor Suietov) integrated:
8906 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
8907 - On Address Space handler deletion, needless deactivation call (BZ 374)
8908 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
8910 - Possible memory leak, Notify sub-objects of Processor, Power,
8913 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
8914 - Minimum Length of RSDT should be validated (BZ 379)
8915 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
8917 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
8921 Example Code and Data Size: These are the sizes for the OS-independent
8922 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8923 debug version of the code includes the debug output trace mechanism and
8925 a much larger code and data size.
8928 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
8929 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
8931 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8932 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8935 2) iASL Compiler/Disassembler and Tools:
8937 Fixed problem reports:
8938 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
8941 ----------------------------------------
8942 23 June 2006. Summary of changes for version 20060623:
8944 1) ACPI CA Core Subsystem:
8946 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
8947 allows the type to be customized to the host OS for improved efficiency
8948 (since a spinlock is usually a very small object.)
8950 Implemented support for "ignored" bits in the ACPI registers. According
8952 the ACPI specification, these bits should be preserved when writing the
8953 registers via a read/modify/write cycle. There are 3 bits preserved in
8955 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
8957 Implemented the initial deployment of new OSL mutex interfaces. Since
8959 host operating systems have separate mutex and semaphore objects, this
8960 feature was requested. The base code now uses mutexes (and the new mutex
8961 interfaces) wherever a binary semaphore was used previously. However, for
8962 the current release, the mutex interfaces are defined as macros to map
8964 to the existing semaphore interfaces. Therefore, no OSL changes are
8966 at this time. (See acpiosxf.h)
8968 Fixed several problems with the support for the control method SyncLevel
8969 parameter. The SyncLevel now works according to the ACPI specification
8971 in concert with the Mutex SyncLevel parameter, since the current
8973 is a property of the executing thread. Mutual exclusion for control
8975 is now implemented with a mutex instead of a semaphore.
8977 Fixed three instances of the use of the C shift operator in the bitfield
8978 support code (exfldio.c) to avoid the use of a shift value larger than
8980 target data width. The behavior of C compilers is undefined in this case
8982 can cause unpredictable results, and therefore the case must be detected
8984 avoided. (Fiodor Suietov)
8986 Added an info message whenever an SSDT or OEM table is loaded dynamically
8987 via the Load() or LoadTable() ASL operators. This should improve
8989 capability since it will show exactly what tables have been loaded
8991 the tables present in the RSDT/XSDT.)
8993 Example Code and Data Size: These are the sizes for the OS-independent
8994 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8995 debug version of the code includes the debug output trace mechanism and
8997 a much larger code and data size.
9000 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9001 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9003 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9004 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9007 2) iASL Compiler/Disassembler and Tools:
9009 No changes for this release.
9011 ----------------------------------------
9012 08 June 2006. Summary of changes for version 20060608:
9014 1) ACPI CA Core Subsystem:
9016 Converted the locking mutex used for the ACPI hardware to a spinlock.
9018 change should eliminate all problems caused by attempting to acquire a
9019 semaphore at interrupt level, and it means that all ACPICA external
9020 interfaces that directly access the ACPI hardware can be safely called
9022 interrupt level. OSL code that implements the semaphore interfaces should
9024 able to eliminate any workarounds for being called at interrupt level.
9026 Fixed a regression introduced in 20060526 where the ACPI device
9027 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9029 did not have an optional _INI method.
9031 Fixed an IndexField issue where a write to the Data Register should be
9032 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9036 Fixed problem reports (Valery Podrezov) integrated:
9037 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9039 Fixed problem reports (Fiodor Suietov) integrated:
9040 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9042 Removed four global mutexes that were obsolete and were no longer being
9045 Example Code and Data Size: These are the sizes for the OS-independent
9046 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9047 debug version of the code includes the debug output trace mechanism and
9049 a much larger code and data size.
9052 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9053 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9055 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9056 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9059 2) iASL Compiler/Disassembler and Tools:
9061 Fixed a fault when using -g option (get tables from registry) on Windows
9064 Fixed problem reports integrated:
9065 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9066 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9068 - Global table revision override (-r) is ignored (BZ 413)
9070 ----------------------------------------
9071 26 May 2006. Summary of changes for version 20060526:
9073 1) ACPI CA Core Subsystem:
9075 Restructured, flattened, and simplified the internal interfaces for
9076 namespace object evaluation - resulting in smaller code, less CPU stack
9078 and fewer interfaces. (With assistance from Mikhail Kouzmich)
9080 Fixed a problem with the CopyObject operator where the first parameter
9082 not typed correctly for the parser, interpreter, compiler, and
9084 Caused various errors and unexpected behavior.
9086 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
9087 produced incorrect results with some C compilers. Since the behavior of C
9088 compilers when the shift value is larger than the datatype width is
9089 apparently not well defined, the interpreter now detects this condition
9091 simply returns zero as expected in all such cases. (BZ 395)
9093 Fixed problem reports (Valery Podrezov) integrated:
9094 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
9095 - Allow interpreter to handle nested method declarations (BZ 5361)
9097 Fixed problem reports (Fiodor Suietov) integrated:
9098 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
9100 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
9102 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
9103 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
9104 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
9105 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
9106 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
9107 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
9108 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
9110 - Status of the Global Initialization Handler call not used (BZ 366)
9111 - Incorrect object parameter to Global Initialization Handler (BZ 367)
9113 Example Code and Data Size: These are the sizes for the OS-independent
9114 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9115 debug version of the code includes the debug output trace mechanism and
9117 a much larger code and data size.
9120 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9121 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9123 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9124 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9127 2) iASL Compiler/Disassembler and Tools:
9129 Modified the parser to allow the names IO, DMA, and IRQ to be used as
9130 namespace identifiers with no collision with existing resource descriptor
9131 macro names. This provides compatibility with other ASL compilers and is
9132 most useful for disassembly/recompilation of existing tables without
9134 errors. (With assistance from Thomas Renninger)
9136 Disassembler: fixed an incorrect disassembly problem with the
9137 DataTableRegion and CopyObject operators. Fixed a possible fault during
9138 disassembly of some Alias operators.
9140 ----------------------------------------
9141 12 May 2006. Summary of changes for version 20060512:
9143 1) ACPI CA Core Subsystem:
9145 Replaced the AcpiOsQueueForExecution interface with a new interface named
9146 AcpiOsExecute. The major difference is that the new interface does not
9148 a Priority parameter, this appeared to be useless and has been replaced
9151 Type parameter. The Type tells the host what type of execution is being
9152 requested, such as global lock handler, notify handler, GPE handler, etc.
9153 This allows the host to queue and execute the request as appropriate for
9155 request type, possibly using different work queues and different
9157 for the various request types. This enables fixes for multithreading
9158 deadlock problems such as BZ #5534, and will require changes to all
9160 OS interface layers. (Alexey Starikovskiy and Bob Moore)
9162 Fixed a possible memory leak associated with the support for the so-
9164 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
9167 Fixed a problem with the Load() operator where a table load from an
9168 operation region could overwrite an internal table buffer by up to 7
9170 and cause alignment faults on IPF systems. (With assistance from Luming
9173 Example Code and Data Size: These are the sizes for the OS-independent
9174 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9175 debug version of the code includes the debug output trace mechanism and
9177 a much larger code and data size.
9180 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9181 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9183 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9184 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9188 2) iASL Compiler/Disassembler and Tools:
9190 Disassembler: Implemented support to cross reference the internal
9192 and automatically generate ASL External() statements for symbols not
9194 within the current table being disassembled. This will simplify the
9195 disassembly and recompilation of interdependent tables such as SSDTs
9197 these statements will no longer have to be added manually.
9199 Disassembler: Implemented experimental support to automatically detect
9200 invocations of external control methods and generate appropriate
9202 statements. This is problematic because the AML cannot be correctly
9204 until the number of arguments for each control method is known.
9206 standalone method invocations and invocations as the source operand of a
9207 Store() statement are supported.
9209 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
9210 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
9211 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
9212 more readable and likely closer to the original ASL source.
9214 ----------------------------------------
9215 21 April 2006. Summary of changes for version 20060421:
9217 1) ACPI CA Core Subsystem:
9219 Removed a device initialization optimization introduced in 20051216 where
9220 the _STA method was not run unless an _INI was also present for the same
9221 device. This optimization could cause problems because it could allow
9223 methods to be run within a not-present device subtree. (If a not-present
9224 device had no _INI, _STA would not be run, the not-present status would
9226 be discovered, and the children of the device would be incorrectly
9229 Implemented a new _STA optimization where namespace subtrees that do not
9230 contain _INI are identified and ignored during device initialization.
9231 Selectively running _STA can significantly improve boot time on large
9232 machines (with assistance from Len Brown.)
9234 Implemented support for the device initialization case where the returned
9235 _STA flags indicate a device not-present but functioning. In this case,
9237 is not run, but the device children are examined for presence, as per the
9240 Implemented an additional change to the IndexField support in order to
9241 conform to MS behavior. The value written to the Index Register is not
9242 simply a byte offset, it is a byte offset in units of the access width of
9243 the parent Index Field. (Fiodor Suietov)
9245 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
9246 interface is called during the creation of all AML operation regions, and
9247 allows the host OS to exert control over what addresses it will allow the
9248 AML code to access. Operation Regions whose addresses are disallowed will
9249 cause a runtime exception when they are actually accessed (will not
9251 or abort table loading.) See oswinxf or osunixxf for an example
9254 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
9255 interface allows the host OS to match the various "optional"
9256 interface/behavior strings for the _OSI predefined control method as
9257 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
9258 for an example implementation.
9260 Restructured and corrected various problems in the exception handling
9262 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
9263 (with assistance from Takayoshi Kochi.)
9265 Modified the Linux source converter to ignore quoted string literals
9267 converting identifiers from mixed to lower case. This will correct
9269 with the disassembler and other areas where such strings must not be
9272 The ACPI_FUNCTION_* macros no longer require quotes around the function
9273 name. This allows the Linux source converter to convert the names, now
9275 the converter ignores quoted strings.
9277 Example Code and Data Size: These are the sizes for the OS-independent
9278 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9279 debug version of the code includes the debug output trace mechanism and
9281 a much larger code and data size.
9285 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9286 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9288 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9289 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9292 2) iASL Compiler/Disassembler and Tools:
9294 Implemented 3 new warnings for iASL, and implemented multiple warning
9298 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
9300 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
9301 check for the possible timeout, a warning is issued.
9303 2) Useless operators: If an ASL operator does not specify an optional
9305 operand and it also does not use the function return value from the
9306 operator, a warning is issued since the operator effectively does
9309 3) Unreferenced objects: If a namespace object is created, but never
9310 referenced, a warning is issued. This is a warning level 2 since there
9312 cases where this is ok, such as when a secondary table is loaded that
9314 the unreferenced objects. Even so, care is taken to only flag objects
9316 don't look like they will ever be used. For example, the reserved methods
9317 (starting with an underscore) are usually not referenced because it is
9318 expected that the OS will invoke them.
9320 ----------------------------------------
9321 31 March 2006. Summary of changes for version 20060331:
9323 1) ACPI CA Core Subsystem:
9325 Implemented header file support for the following additional ACPI tables:
9326 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
9328 all current and known ACPI tables are now defined in the ACPICA headers
9330 are available for use by device drivers and other software.
9332 Implemented support to allow tables that contain ACPI names with invalid
9333 characters to be loaded. Previously, this would cause the table load to
9334 fail, but since there are several known cases of such tables on existing
9335 machines, this change was made to enable ACPI support for them. Also,
9337 matches the behavior of the Microsoft ACPI implementation.
9339 Fixed a couple regressions introduced during the memory optimization in
9341 20060317 release. The namespace node definition required additional
9342 reorganization and an internal datatype that had been changed to 8-bit
9344 restored to 32-bit. (Valery Podrezov)
9346 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
9347 could be passed through to AcpiOsReleaseObject which is unexpected. Such
9348 null pointers are now trapped and ignored, matching the behavior of the
9349 previous implementation before the deployment of AcpiOsReleaseObject.
9350 (Valery Podrezov, Fiodor Suietov)
9352 Fixed a memory mapping leak during the deletion of a SystemMemory
9354 region where a cached memory mapping was not deleted. This became a
9355 noticeable problem for operation regions that are defined within
9357 used control methods. (Dana Meyers)
9359 Reorganized the ACPI table header files into two main files: one for the
9360 ACPI tables consumed by the ACPICA core, and another for the
9362 ACPI tables that are consumed by the drivers and other software. The
9364 FADT definitions were merged into one common section and three different
9365 tables (ACPI 1.0, 1.0+, and 2.0)
9367 Example Code and Data Size: These are the sizes for the OS-independent
9368 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9369 debug version of the code includes the debug output trace mechanism and
9371 a much larger code and data size.
9374 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9375 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9377 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9378 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9381 2) iASL Compiler/Disassembler and Tools:
9383 Disassembler: Implemented support to decode and format all non-AML ACPI
9384 tables (tables other than DSDTs and SSDTs.) This includes the new tables
9385 added to the ACPICA headers, therefore all current and known ACPI tables
9389 Disassembler: The change to allow ACPI names with invalid characters also
9390 enables the disassembly of such tables. Invalid characters within names
9392 changed to '*' to make the name printable; the iASL compiler will still
9393 generate an error for such names, however, since this is an invalid ACPI
9396 Implemented an option for AcpiXtract (-a) to extract all tables found in
9398 input file. The default invocation extracts only the DSDTs and SSDTs.
9400 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
9401 makefile for the AcpiXtract utility.
9403 ----------------------------------------
9404 17 March 2006. Summary of changes for version 20060317:
9406 1) ACPI CA Core Subsystem:
9408 Implemented the use of a cache object for all internal namespace nodes.
9409 Since there are about 1000 static nodes in a typical system, this will
9410 decrease memory use for cache implementations that minimize per-
9412 overhead (such as a slab allocator.)
9414 Removed the reference count mechanism for internal namespace nodes, since
9416 was deemed unnecessary. This reduces the size of each namespace node by
9417 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
9419 and 32 bytes for the 64-bit case.
9421 Optimized several internal data structures to reduce object size on 64-
9423 platforms by packing data within the 64-bit alignment. This includes the
9424 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
9425 instances corresponding to the namespace objects.
9427 Added two new strings for the predefined _OSI method: "Windows 2001.1
9431 Split the allocation tracking mechanism out to a separate file, from
9432 utalloc.c to uttrack.c. This mechanism appears to be only useful for
9433 application-level code. Kernels may wish to not include uttrack.c in
9436 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
9438 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
9441 Code and Data Size: These are the sizes for the acpica.lib produced by
9443 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9445 driver or OSPM code. The debug version of the code includes the debug
9447 trace mechanism and has a much larger code and data size. Note that these
9448 values will vary depending on the efficiency of the compiler and the
9449 compiler options used during generation.
9452 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9453 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9455 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9456 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9459 2) iASL Compiler/Disassembler and Tools:
9461 Implemented an ANSI C version of the acpixtract utility. This version
9463 automatically extract the DSDT and all SSDTs from the input acpidump text
9464 file and dump the binary output to separate files. It can also display a
9465 summary of the input file including the headers for each table found and
9466 will extract any single ACPI table, with any signature. (See
9467 source/tools/acpixtract)
9469 ----------------------------------------
9470 10 March 2006. Summary of changes for version 20060310:
9472 1) ACPI CA Core Subsystem:
9474 Tagged all external interfaces to the subsystem with the new
9475 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
9477 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
9478 macro. The default definition is NULL.
9480 Added the ACPI_THREAD_ID type for the return value from
9482 This allows the host to define this as necessary to simplify kernel
9483 integration. The default definition is ACPI_NATIVE_UINT.
9485 Fixed two interpreter problems related to error processing, the deletion
9487 objects, and placing invalid pointers onto the internal operator result
9488 stack. BZ 6028, 6151 (Valery Podrezov)
9490 Increased the reference count threshold where a warning is emitted for
9492 reference counts in order to eliminate unnecessary warnings on systems
9494 large namespaces (especially 64-bit.) Increased the value from 0x400 to
9497 Due to universal disagreement as to the meaning of the 'c' in the
9499 function, the ACPI_MEM_CALLOCATE macro has been renamed to
9500 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
9501 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
9504 Code and Data Size: These are the sizes for the acpica.lib produced by
9506 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9508 driver or OSPM code. The debug version of the code includes the debug
9510 trace mechanism and has a much larger code and data size. Note that these
9511 values will vary depending on the efficiency of the compiler and the
9512 compiler options used during generation.
9515 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9516 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9518 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9519 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9522 2) iASL Compiler/Disassembler:
9524 Disassembler: implemented support for symbolic resource descriptor
9525 references. If a CreateXxxxField operator references a fixed offset
9528 resource descriptor, a name is assigned to the descriptor and the offset
9530 translated to the appropriate resource tag and pathname. The addition of
9531 this support brings the disassembled code very close to the original ASL
9532 source code and helps eliminate run-time errors when the disassembled
9534 is modified (and recompiled) in such a way as to invalidate the original
9537 Implemented support for a Descriptor Name as the last parameter to the
9539 Register() macro. This parameter was inadvertently left out of the ACPI
9540 specification, and will be added for ACPI 3.0b.
9542 Fixed a problem where the use of the "_OSI" string (versus the full path
9543 "\_OSI") caused an internal compiler error. ("No back ptr to op")
9545 Fixed a problem with the error message that occurs when an invalid string
9547 used for a _HID object (such as one with an embedded asterisk:
9549 The correct message is now displayed.
9551 ----------------------------------------
9552 17 February 2006. Summary of changes for version 20060217:
9554 1) ACPI CA Core Subsystem:
9556 Implemented a change to the IndexField support to match the behavior of
9558 Microsoft AML interpreter. The value written to the Index register is now
9560 byte offset, no longer an index based upon the width of the Data
9562 This should fix IndexField problems seen on some machines where the Data
9563 register is not exactly one byte wide. The ACPI specification will be
9564 clarified on this point.
9566 Fixed a problem where several resource descriptor types could overrun the
9567 internal descriptor buffer due to size miscalculation: VendorShort,
9568 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
9569 affect all platforms.
9571 Fixed a problem where individual resource descriptors were misaligned
9573 the internal buffer, causing alignment faults on IA64 platforms.
9575 Code and Data Size: These are the sizes for the acpica.lib produced by
9577 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9579 driver or OSPM code. The debug version of the code includes the debug
9581 trace mechanism and has a much larger code and data size. Note that these
9582 values will vary depending on the efficiency of the compiler and the
9583 compiler options used during generation.
9586 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9587 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9589 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9590 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9593 2) iASL Compiler/Disassembler:
9595 Implemented support for new reserved names: _WDG and _WED are Microsoft
9596 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
9597 defined method (Throttling Depth Limit.)
9599 Fixed a problem where a zero-length VendorShort or VendorLong resource
9600 descriptor was incorrectly emitted as a descriptor of length one.
9602 ----------------------------------------
9603 10 February 2006. Summary of changes for version 20060210:
9605 1) ACPI CA Core Subsystem:
9607 Removed a couple of extraneous ACPI_ERROR messages that appeared during
9608 normal execution. These became apparent after the conversion from
9611 Fixed a problem where the CreateField operator could hang if the BitIndex
9613 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
9615 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
9616 failed with an exception. This also fixes a couple of related RefOf and
9617 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
9619 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
9621 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
9625 Implemented a memory cleanup at the end of the execution of each
9627 of an AML While() loop, preventing the accumulation of outstanding
9629 (Valery Podrezov, BZ 5427)
9631 Eliminated a chunk of duplicate code in the object resolution code.
9635 Fixed several warnings during the 64-bit code generation.
9637 The AcpiSrc source code conversion tool now inserts one line of
9639 after an if() statement that is followed immediately by a comment,
9641 readability of the Linux code.
9643 Code and Data Size: The current and previous library sizes for the core
9644 subsystem are shown below. These are the code and data sizes for the
9645 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9647 values do not include any ACPI driver or OSPM code. The debug version of
9649 code includes the debug output trace mechanism and has a much larger code
9650 and data size. Note that these values will vary depending on the
9652 of the compiler and the compiler options used during generation.
9655 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9656 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9658 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9659 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9662 2) iASL Compiler/Disassembler:
9664 Fixed a problem with the disassembly of a BankField operator with a
9666 expression for the BankValue parameter.
9668 ----------------------------------------
9669 27 January 2006. Summary of changes for version 20060127:
9671 1) ACPI CA Core Subsystem:
9673 Implemented support in the Resource Manager to allow unresolved
9675 references within resource package objects for the _PRT method. This
9677 is in addition to the previously implemented unresolved reference support
9678 within the AML parser. If the interpreter slack mode is enabled, these
9679 unresolved references will be passed through to the caller as a NULL
9683 Implemented and deployed new macros and functions for error and warning
9684 messages across the subsystem. These macros are simpler and generate less
9685 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
9686 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
9687 macros remain defined to allow ACPI drivers time to migrate to the new
9690 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
9692 Acquire/Release Lock OSL interfaces.
9694 Fixed a problem where Alias ASL operators are sometimes not correctly
9695 resolved, in both the interpreter and the iASL compiler.
9697 Fixed several problems with the implementation of the
9698 ConcatenateResTemplate
9699 ASL operator. As per the ACPI specification, zero length buffers are now
9700 treated as a single EndTag. One-length buffers always cause a fatal
9701 exception. Non-zero length buffers that do not end with a full 2-byte
9703 cause a fatal exception.
9705 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
9706 interface. (With assistance from Thomas Renninger)
9708 Code and Data Size: The current and previous library sizes for the core
9709 subsystem are shown below. These are the code and data sizes for the
9710 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9712 values do not include any ACPI driver or OSPM code. The debug version of
9714 code includes the debug output trace mechanism and has a much larger code
9715 and data size. Note that these values will vary depending on the
9717 of the compiler and the compiler options used during generation.
9720 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9721 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9723 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9724 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9727 2) iASL Compiler/Disassembler:
9729 Fixed an internal error that was generated for any forward references to
9733 ----------------------------------------
9734 13 January 2006. Summary of changes for version 20060113:
9736 1) ACPI CA Core Subsystem:
9738 Added 2006 copyright to all module headers and signons. This affects
9739 virtually every file in the ACPICA core subsystem, iASL compiler, and the
9742 Enhanced the ACPICA error reporting in order to simplify user migration
9744 the non-debug version of ACPICA. Replaced all instances of the
9745 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
9747 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
9748 respectively. This preserves all error and warning messages in the non-
9750 version of the ACPICA code (this has been referred to as the "debug lite"
9751 option.) Over 200 cases were converted to create a total of over 380
9752 error/warning messages across the ACPICA code. This increases the code
9754 data size of the default non-debug version of the code somewhat (about
9756 but all error/warning reporting may be disabled if desired (and code
9757 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
9758 configuration option. The size of the debug version of ACPICA remains
9762 Fixed a memory leak within the AML Debugger "Set" command. One object was
9763 not properly deleted for every successful invocation of the command.
9765 Code and Data Size: The current and previous library sizes for the core
9766 subsystem are shown below. These are the code and data sizes for the
9767 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9769 values do not include any ACPI driver or OSPM code. The debug version of
9771 code includes the debug output trace mechanism and has a much larger code
9772 and data size. Note that these values will vary depending on the
9774 of the compiler and the compiler options used during generation.
9777 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9778 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9780 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9781 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9784 2) iASL Compiler/Disassembler:
9786 The compiler now officially supports the ACPI 3.0a specification that was
9787 released on December 30, 2005. (Specification is available at
9790 ----------------------------------------
9791 16 December 2005. Summary of changes for version 20051216:
9793 1) ACPI CA Core Subsystem:
9795 Implemented optional support to allow unresolved names within ASL Package
9796 objects. A null object is inserted in the package when a named reference
9797 cannot be located in the current namespace. Enabled via the interpreter
9798 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
9800 that contain such code.
9802 Implemented an optimization to the initialization sequence that can
9804 boot time. During ACPI device initialization, the _STA method is now run
9806 and only if the _INI method exists. The _STA method is used to determine
9808 the device is present; An _INI can only be run if _STA returns present,
9810 it is a waste of time to run the _STA method if the _INI does not exist.
9811 (Prototype and assistance from Dong Wei)
9813 Implemented use of the C99 uintptr_t for the pointer casting macros if it
9815 available in the current compiler. Otherwise, the default (void *) cast
9819 Fixed some possible memory leaks found within the execution path of the
9820 Break, Continue, If, and CreateField operators. (Valery Podrezov)
9822 Fixed a problem introduced in the 20051202 release where an exception is
9823 generated during method execution if a control method attempts to declare
9826 Moved resource descriptor string constants that are used by both the AML
9827 disassembler and AML debugger to the common utilities directory so that
9828 these components are independent.
9830 Implemented support in the AcpiExec utility (-e switch) to globally
9832 exceptions during control method execution (method is not aborted.)
9834 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
9837 Code and Data Size: The current and previous library sizes for the core
9838 subsystem are shown below. These are the code and data sizes for the
9839 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9841 values do not include any ACPI driver or OSPM code. The debug version of
9843 code includes the debug output trace mechanism and has a much larger code
9844 and data size. Note that these values will vary depending on the
9846 of the compiler and the compiler options used during generation.
9849 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9850 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9852 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9853 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9856 2) iASL Compiler/Disassembler:
9858 Fixed a problem where a CPU stack overflow fault could occur if a
9860 method call was made from within a Return statement.
9862 ----------------------------------------
9863 02 December 2005. Summary of changes for version 20051202:
9865 1) ACPI CA Core Subsystem:
9867 Modified the parsing of control methods to no longer create namespace
9868 objects during the first pass of the parse. Objects are now created only
9869 during the execute phase, at the moment the namespace creation operator
9871 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
9873 should eliminate ALREADY_EXISTS exceptions seen on some machines where
9874 reentrant control methods are protected by an AML mutex. The mutex will
9876 correctly block multiple threads from attempting to create the same
9880 Increased the number of available Owner Ids for namespace object tracking
9881 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
9883 some machines with a large number of ACPI tables (either static or
9886 Fixed a problem with the AcpiExec utility where a fault could occur when
9888 -b switch (batch mode) is used.
9890 Enhanced the namespace dump routine to output the owner ID for each
9893 Code and Data Size: The current and previous library sizes for the core
9894 subsystem are shown below. These are the code and data sizes for the
9895 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9897 values do not include any ACPI driver or OSPM code. The debug version of
9899 code includes the debug output trace mechanism and has a much larger code
9900 and data size. Note that these values will vary depending on the
9902 of the compiler and the compiler options used during generation.
9905 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9906 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9908 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9909 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9912 2) iASL Compiler/Disassembler:
9914 Fixed a parse error during compilation of certain Switch/Case constructs.
9916 simplify the parse, the grammar now allows for multiple Default
9918 and this error is now detected and flagged during the analysis phase.
9920 Disassembler: The disassembly now includes the contents of the original
9921 table header within a comment at the start of the file. This includes the
9922 name and version of the original ASL compiler.
9924 ----------------------------------------
9925 17 November 2005. Summary of changes for version 20051117:
9927 1) ACPI CA Core Subsystem:
9929 Fixed a problem in the AML parser where the method thread count could be
9930 decremented below zero if any errors occurred during the method parse
9932 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
9934 This also fixed a related regression with the mechanism that detects and
9935 corrects methods that cannot properly handle reentrancy (related to the
9936 deployment of the new OwnerId mechanism.)
9938 Eliminated the pre-parsing of control methods (to detect errors) during
9939 table load. Related to the problem above, this was causing unwind issues
9941 any errors occurred during the parse, and it seemed to be overkill. A
9943 load should not be aborted if there are problems with any single control
9944 method, thus rendering this feature rather pointless.
9946 Fixed a problem with the new table-driven resource manager where an
9948 buffer overflow could occur for small resource templates.
9950 Implemented a new external interface, AcpiGetVendorResource. This
9952 will find and return a vendor-defined resource descriptor within a _CRS
9954 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
9957 Removed the length limit (200) on string objects as per the upcoming ACPI
9958 3.0A specification. This affects the following areas of the interpreter:
9960 any implicit conversion of a Buffer to a String, 2) a String object
9962 of the ASL Concatentate operator, 3) the String object result of the ASL
9965 Fixed a problem in the Windows OS interface layer (OSL) where a
9967 on a semaphore object would incorrectly timeout. This allows the
9968 multithreading features of the AcpiExec utility to work properly under
9971 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
9972 the recently added file named "utresrc.c".
9974 Code and Data Size: The current and previous library sizes for the core
9975 subsystem are shown below. These are the code and data sizes for the
9976 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9978 values do not include any ACPI driver or OSPM code. The debug version of
9980 code includes the debug output trace mechanism and has a much larger code
9981 and data size. Note that these values will vary depending on the
9983 of the compiler and the compiler options used during generation.
9986 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9987 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9989 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9990 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9993 2) iASL Compiler/Disassembler:
9995 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
9996 specification. For the iASL compiler, this means that string literals
9998 the source ASL can be of any length.
10000 Enhanced the listing output to dump the AML code for resource descriptors
10001 immediately after the ASL code for each descriptor, instead of in a block
10003 the end of the entire resource template.
10005 Enhanced the compiler debug output to dump the entire original parse tree
10006 constructed during the parse phase, before any transforms are applied to
10008 tree. The transformed tree is dumped also.
10010 ----------------------------------------
10011 02 November 2005. Summary of changes for version 20051102:
10013 1) ACPI CA Core Subsystem:
10015 Modified the subsystem initialization sequence to improve GPE support.
10017 GPE initialization has been split into two parts in order to defer
10019 of the _PRW methods (Power Resources for Wake) until after the hardware
10021 fully initialized and the SCI handler is installed. This allows the _PRW
10022 methods to access fields protected by the Global Lock. This will fix
10024 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10026 Converted the ACPI internal object disassemble and display code within
10028 AML debugger to fully table-driven operation, reducing code size and
10029 increasing maintainability.
10031 Fixed a regression with the ConcatenateResTemplate() ASL operator
10033 in the 20051021 release.
10035 Implemented support for "local" internal ACPI object types within the
10036 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10037 These local types include RegionFields, BankFields, IndexFields, Alias,
10041 Moved common AML resource handling code into a new file, "utresrc.c".
10043 code is shared by both the Resource Manager and the AML Debugger.
10045 Code and Data Size: The current and previous library sizes for the core
10046 subsystem are shown below. These are the code and data sizes for the
10047 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10049 values do not include any ACPI driver or OSPM code. The debug version of
10051 code includes the debug output trace mechanism and has a much larger code
10052 and data size. Note that these values will vary depending on the
10054 of the compiler and the compiler options used during generation.
10057 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10058 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10060 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10061 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10064 2) iASL Compiler/Disassembler:
10066 Fixed a problem with very large initializer lists (more than 4000
10068 for both Buffer and Package objects where the parse stack could overflow.
10070 Enhanced the pre-compile source code scan for non-ASCII characters to
10072 characters within comment fields. The scan is now always performed and is
10074 longer optional, detecting invalid characters within a source file
10075 immediately rather than during the parse phase or later.
10077 Enhanced the ASL grammar definition to force early reductions on all
10079 style grammar elements so that the overall parse stack usage is greatly
10080 reduced. This should improve performance and reduce the possibility of
10084 Eliminated all reduce/reduce conflicts in the iASL parser generation.
10086 with the addition of a %expected statement, the compiler generates from
10087 source with no warnings.
10089 Fixed a possible segment fault in the disassembler if the input filename
10090 does not contain a "dot" extension (Thomas Renninger).
10092 ----------------------------------------
10093 21 October 2005. Summary of changes for version 20051021:
10095 1) ACPI CA Core Subsystem:
10097 Implemented support for the EM64T and other x86-64 processors. This
10098 essentially entails recognizing that these processors support non-aligned
10099 memory transfers. Previously, all 64-bit processors were assumed to lack
10100 hardware support for non-aligned transfers.
10102 Completed conversion of the Resource Manager to nearly full table-driven
10103 operation. Specifically, the resource conversion code (convert AML to
10104 internal format and the reverse) and the debug code to dump internal
10105 resource descriptors are fully table-driven, reducing code and data size
10107 improving maintainability.
10109 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
10111 on 64-bit processors instead of a fixed 32-bit word. (With assistance
10113 Alexey Starikovskiy)
10115 Implemented support within the resource conversion code for the Type-
10116 Specific byte within the various ACPI 3.0 *WordSpace macros.
10118 Fixed some issues within the resource conversion code for the type-
10120 flags for both Memory and I/O address resource descriptors. For Memory,
10121 implemented support for the MTP and TTP flags. For I/O, split the TRS and
10122 TTP flags into two separate fields.
10124 Code and Data Size: The current and previous library sizes for the core
10125 subsystem are shown below. These are the code and data sizes for the
10126 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10128 values do not include any ACPI driver or OSPM code. The debug version of
10130 code includes the debug output trace mechanism and has a much larger code
10131 and data size. Note that these values will vary depending on the
10133 of the compiler and the compiler options used during generation.
10136 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10137 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10139 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10140 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10144 2) iASL Compiler/Disassembler:
10146 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
10148 corresponding ResourceSource string was not also present in a resource
10149 descriptor declaration. This restriction caused problems with existing
10150 AML/ASL code that includes the Index byte without the string. When such
10152 was disassembled, it could not be compiled without modification. Further,
10153 the modified code created a resource template with a different size than
10155 original, breaking code that used fixed offsets into the resource
10159 Removed a recent feature of the disassembler to ignore a lone
10161 byte. This byte is now emitted if present so that the exact AML can be
10162 reproduced when the disassembled code is recompiled.
10164 Improved comments and text alignment for the resource descriptor code
10165 emitted by the disassembler.
10167 Implemented disassembler support for the ACPI 3.0 AccessSize field within
10169 Register() resource descriptor.
10171 ----------------------------------------
10172 30 September 2005. Summary of changes for version 20050930:
10174 1) ACPI CA Core Subsystem:
10176 Completed a major overhaul of the Resource Manager code - specifically,
10177 optimizations in the area of the AML/internal resource conversion code.
10179 code has been optimized to simplify and eliminate duplicated code, CPU
10181 use has been decreased by optimizing function parameters and local
10182 variables, and naming conventions across the manager have been
10184 for clarity and ease of maintenance (this includes function, parameter,
10185 variable, and struct/typedef names.) The update may force changes in some
10186 driver code, depending on how resources are handled by the host OS.
10188 All Resource Manager dispatch and information tables have been moved to a
10189 single location for clarity and ease of maintenance. One new file was
10190 created, named "rsinfo.c".
10192 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
10193 guarantee that the argument is not evaluated twice, making them less
10195 to macro side-effects. However, since there exists the possibility of
10196 additional stack use if a particular compiler cannot optimize them (such
10198 in the debug generation case), the original macros are optionally
10200 Note that some invocations of the return_VALUE macro may now cause size
10201 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
10203 eliminate these. (From Randy Dunlap)
10205 Implemented a new mechanism to enable debug tracing for individual
10207 methods. A new external interface, AcpiDebugTrace, is provided to enable
10208 this mechanism. The intent is to allow the host OS to easily enable and
10209 disable tracing for problematic control methods. This interface can be
10210 easily exposed to a user or debugger interface if desired. See the file
10211 psxface.c for details.
10213 AcpiUtCallocate will now return a valid pointer if a length of zero is
10214 specified - a length of one is used and a warning is issued. This matches
10215 the behavior of AcpiUtAllocate.
10217 Code and Data Size: The current and previous library sizes for the core
10218 subsystem are shown below. These are the code and data sizes for the
10219 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10221 values do not include any ACPI driver or OSPM code. The debug version of
10223 code includes the debug output trace mechanism and has a much larger code
10224 and data size. Note that these values will vary depending on the
10226 of the compiler and the compiler options used during generation.
10229 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10230 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10232 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10233 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10236 2) iASL Compiler/Disassembler:
10238 A remark is issued if the effective compile-time length of a package or
10239 buffer is zero. Previously, this was a warning.
10241 ----------------------------------------
10242 16 September 2005. Summary of changes for version 20050916:
10244 1) ACPI CA Core Subsystem:
10246 Fixed a problem within the Resource Manager where support for the Generic
10247 Register descriptor was not fully implemented. This descriptor is now
10249 recognized, parsed, disassembled, and displayed.
10251 Completely restructured the Resource Manager code to utilize table-driven
10252 dispatch and lookup, eliminating many of the large switch() statements.
10254 reduces overall subsystem code size and code complexity. Affects the
10255 resource parsing and construction, disassembly, and debug dump output.
10257 Cleaned up and restructured the debug dump output for all resource
10258 descriptors. Improved readability of the output and reduced code size.
10260 Fixed a problem where changes to internal data structures caused the
10261 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
10263 Code and Data Size: The current and previous library sizes for the core
10264 subsystem are shown below. These are the code and data sizes for the
10265 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10267 values do not include any ACPI driver or OSPM code. The debug version of
10269 code includes the debug output trace mechanism and has a much larger code
10270 and data size. Note that these values will vary depending on the
10272 of the compiler and the compiler options used during generation.
10275 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10276 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10278 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10279 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10282 2) iASL Compiler/Disassembler:
10284 Updated the disassembler to automatically insert an EndDependentFn()
10286 into the ASL stream if this macro is missing in the original AML code,
10287 simplifying compilation of the resulting ASL module.
10289 Fixed a problem in the disassembler where a disassembled ResourceSource
10290 string (within a large resource descriptor) was not surrounded by quotes
10292 not followed by a comma, causing errors when the resulting ASL module was
10293 compiled. Also, escape sequences within a ResourceSource string are now
10294 handled correctly (especially "\\")
10296 ----------------------------------------
10297 02 September 2005. Summary of changes for version 20050902:
10299 1) ACPI CA Core Subsystem:
10301 Fixed a problem with the internal Owner ID allocation and deallocation
10302 mechanisms for control method execution and recursive method invocation.
10303 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
10304 messages seen on some systems. Recursive method invocation depth is
10305 currently limited to 255. (Alexey Starikovskiy)
10307 Completely eliminated all vestiges of support for the "module-level
10308 executable code" until this support is fully implemented and debugged.
10310 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
10311 some systems that invoke this support.
10313 Fixed a problem within the resource manager code where the transaction
10315 for a 64-bit address descriptor were handled incorrectly in the type-
10316 specific flag byte.
10318 Consolidated duplicate code within the address descriptor resource
10320 code, reducing overall subsystem code size.
10322 Fixed a fault when using the AML debugger "disassemble" command to
10323 disassemble individual control methods.
10325 Removed references to the "release_current" directory within the Unix
10328 Code and Data Size: The current and previous core subsystem library sizes
10329 are shown below. These are the code and data sizes for the acpica.lib
10330 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
10331 include any ACPI driver or OSPM code. The debug version of the code
10333 the debug output trace mechanism and has a much larger code and data
10335 Note that these values will vary depending on the efficiency of the
10337 and the compiler options used during generation.
10340 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10341 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10343 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10344 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10347 2) iASL Compiler/Disassembler:
10349 Implemented an error check for illegal duplicate values in the interrupt
10351 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
10354 Implemented error checking for the Irq() and IrqNoFlags() macros to
10356 too many values in the interrupt list (16 max) and invalid values in the
10357 list (range 0 - 15)
10359 The maximum length string literal within an ASL file is now restricted to
10360 200 characters as per the ACPI specification.
10362 Fixed a fault when using the -ln option (generate namespace listing).
10364 Implemented an error check to determine if a DescriptorName within a
10365 resource descriptor has already been used within the current scope.
10367 ----------------------------------------
10368 15 August 2005. Summary of changes for version 20050815:
10370 1) ACPI CA Core Subsystem:
10372 Implemented a full bytewise compare to determine if a table load request
10374 attempting to load a duplicate table. The compare is performed if the
10376 signatures and table lengths match. This will allow different tables with
10377 the same OEM Table ID and revision to be loaded - probably against the
10379 specification, but discovered in the field nonetheless.
10381 Added the changes.txt logfile to each of the zipped release packages.
10383 Code and Data Size: Current and previous core subsystem library sizes are
10384 shown below. These are the code and data sizes for the acpica.lib
10386 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10387 any ACPI driver or OSPM code. The debug version of the code includes the
10388 debug output trace mechanism and has a much larger code and data size.
10390 that these values will vary depending on the efficiency of the compiler
10392 the compiler options used during generation.
10395 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10396 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10398 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10399 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10402 2) iASL Compiler/Disassembler:
10404 Fixed a problem where incorrect AML code could be generated for Package
10405 objects if optimization is disabled (via the -oa switch).
10407 Fixed a problem with where incorrect AML code is generated for variable-
10408 length packages when the package length is not specified and the number
10410 initializer values is greater than 255.
10413 ----------------------------------------
10414 29 July 2005. Summary of changes for version 20050729:
10416 1) ACPI CA Core Subsystem:
10418 Implemented support to ignore an attempt to install/load a particular
10420 table more than once. Apparently there exists BIOS code that repeatedly
10421 attempts to load the same SSDT upon certain events. With assistance from
10422 Venkatesh Pallipadi.
10424 Restructured the main interface to the AML parser in order to correctly
10425 handle all exceptional conditions. This will prevent leakage of the
10427 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
10429 machines. With assistance from Alexey Starikovskiy.
10431 Support for "module level code" has been disabled in this version due to
10433 number of issues that have appeared on various machines. The support can
10435 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
10436 compilation. When the issues are fully resolved, the code will be enabled
10440 Modified the internal functions for debug print support to define the
10441 FunctionName parameter as a (const char *) for compatibility with
10443 built-in macros such as __FUNCTION__, etc.
10445 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
10447 Implemented support to display an object count summary for the AML
10449 commands Object and Methods.
10451 Code and Data Size: Current and previous core subsystem library sizes are
10452 shown below. These are the code and data sizes for the acpica.lib
10454 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10455 any ACPI driver or OSPM code. The debug version of the code includes the
10456 debug output trace mechanism and has a much larger code and data size.
10458 that these values will vary depending on the efficiency of the compiler
10460 the compiler options used during generation.
10463 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10464 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10466 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10467 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10470 2) iASL Compiler/Disassembler:
10472 Fixed a regression that appeared in the 20050708 version of the compiler
10473 where an error message was inadvertently emitted for invocations of the
10475 reserved control method.
10477 ----------------------------------------
10478 08 July 2005. Summary of changes for version 20050708:
10480 1) ACPI CA Core Subsystem:
10482 The use of the CPU stack in the debug version of the subsystem has been
10483 considerably reduced. Previously, a debug structure was declared in every
10484 function that used the debug macros. This structure has been removed in
10485 favor of declaring the individual elements as parameters to the debug
10486 functions. This reduces the cumulative stack use during nested execution
10488 ACPI function calls at the cost of a small increase in the code size of
10490 debug version of the subsystem. With assistance from Alexey Starikovskiy
10494 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
10495 headers to define a macro that will return the current function name at
10496 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
10498 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
10499 compiler-dependent header, the function name is saved on the CPU stack
10501 pointer per function.) This mechanism is used because apparently there
10502 exists no standard ANSI-C defined macro that that returns the function
10505 Redesigned and reimplemented the "Owner ID" mechanism used to track
10506 namespace objects created/deleted by ACPI tables and control method
10507 execution. A bitmap is now used to allocate and free the IDs, thus
10509 the wraparound problem present in the previous implementation. The size
10511 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
10514 Removed the UINT32_BIT and UINT16_BIT types that were used for the
10516 flag definitions within the headers for the predefined ACPI tables. These
10517 have been replaced by UINT8_BIT in order to increase the code portability
10519 the subsystem. If the use of UINT8 remains a problem, we may be forced to
10520 eliminate bitfields entirely because of a lack of portability.
10522 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
10524 is a frequently used function and this improvement increases the
10526 of the entire subsystem (Alexey Starikovskiy).
10528 Fixed several possible memory leaks and the inverse - premature object
10529 deletion (Alexey Starikovskiy).
10531 Code and Data Size: Current and previous core subsystem library sizes are
10532 shown below. These are the code and data sizes for the acpica.lib
10534 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10535 any ACPI driver or OSPM code. The debug version of the code includes the
10536 debug output trace mechanism and has a much larger code and data size.
10538 that these values will vary depending on the efficiency of the compiler
10540 the compiler options used during generation.
10543 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10544 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10546 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10547 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10549 ----------------------------------------
10550 24 June 2005. Summary of changes for version 20050624:
10552 1) ACPI CA Core Subsystem:
10554 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
10555 the host-defined cache object. This allows the OSL implementation to
10557 and type this object in any manner desired, simplifying the OSL
10558 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
10559 Linux, and should be defined in the OS-specific header file for other
10560 operating systems as required.
10562 Changed the interface to AcpiOsAcquireObject to directly return the
10563 requested object as the function return (instead of ACPI_STATUS.) This
10564 change was made for performance reasons, since this is the purpose of the
10565 interface in the first place. AcpiOsAcquireObject is now similar to the
10566 AcpiOsAllocate interface.
10568 Implemented a new AML debugger command named Businfo. This command
10570 information about all devices that have an associate _PRT object. The
10572 _HID, _UID, and _CID are displayed for these devices.
10574 Modified the initialization sequence in AcpiInitializeSubsystem to call
10576 OSL interface AcpiOslInitialize first, before any local initialization.
10578 change was required because the global initialization now calls OSL
10581 Enhanced the Dump command to display the entire contents of Package
10583 (including all sub-objects and their values.)
10585 Restructured the code base to split some files because of size and/or
10586 because the code logically belonged in a separate file. New files are
10588 below. All makefiles and project files included in the ACPI CA release
10591 utilities/utcache.c /* Local cache interfaces */
10592 utilities/utmutex.c /* Local mutex support */
10593 utilities/utstate.c /* State object support */
10594 interpreter/parser/psloop.c /* Main AML parse loop */
10596 Code and Data Size: Current and previous core subsystem library sizes are
10597 shown below. These are the code and data sizes for the acpica.lib
10599 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10600 any ACPI driver or OSPM code. The debug version of the code includes the
10601 debug output trace mechanism and has a much larger code and data size.
10603 that these values will vary depending on the efficiency of the compiler
10605 the compiler options used during generation.
10608 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10609 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10611 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10612 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10615 2) iASL Compiler/Disassembler:
10617 Fixed a regression introduced in version 20050513 where the use of a
10619 object within a Case() statement caused a compile time exception. The
10620 original behavior has been restored (a Match() operator is emitted.)
10622 ----------------------------------------
10623 17 June 2005. Summary of changes for version 20050617:
10625 1) ACPI CA Core Subsystem:
10627 Moved the object cache operations into the OS interface layer (OSL) to
10629 the host OS to handle these operations if desired (for example, the Linux
10630 OSL will invoke the slab allocator). This support is optional; the
10632 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
10634 code in the ACPI CA core. The new OSL interfaces are shown below. See
10635 utalloc.c for an example implementation, and acpiosxf.h for the exact
10636 interface definitions. With assistance from Alexey Starikovskiy.
10640 AcpiOsAcquireObject
10641 AcpiOsReleaseObject
10643 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
10645 and restore a flags parameter. This fits better with many OS lock models.
10646 Note: the current execution state (interrupt handler or not) is no longer
10647 passed to these interfaces. If necessary, the OSL must determine this
10649 by itself, a simple and fast operation. With assistance from Alexey
10652 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
10653 present if the revision of the RSDP was 2 or greater. According to the
10655 specification, the XSDT is optional in all cases, and the table manager
10656 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
10657 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
10661 Fixed an interpreter problem with the Mid() operator in the case of an
10663 string where the resulting output string is of zero length. It now
10665 returns a valid, null terminated string object instead of a string object
10666 with a null pointer.
10668 Fixed a problem with the control method argument handling to allow a
10670 to an Arg object that already contains an object of type Device. The
10672 object is now correctly overwritten. Previously, an error was returned.
10675 Enhanced the debugger Find command to emit object values in addition to
10677 found object pathnames. The output format is the same as the dump
10681 Enhanced the debugger Set command. It now has the ability to set the
10683 of any Named integer object in the namespace (Previously, only method
10685 and args could be set.)
10687 Code and Data Size: Current and previous core subsystem library sizes are
10688 shown below. These are the code and data sizes for the acpica.lib
10690 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10691 any ACPI driver or OSPM code. The debug version of the code includes the
10692 debug output trace mechanism and has a much larger code and data size.
10694 that these values will vary depending on the efficiency of the compiler
10696 the compiler options used during generation.
10699 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10700 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10702 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10703 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10706 2) iASL Compiler/Disassembler:
10708 Fixed a regression in the disassembler where if/else/while constructs
10710 output incorrectly. This problem was introduced in the previous release
10711 (20050526). This problem also affected the single-step disassembly in the
10714 Fixed a problem where compiling the reserved _OSI method would randomly
10716 rarely) produce compile errors.
10718 Enhanced the disassembler to emit compilable code in the face of
10720 AML resource descriptors. If the optional ResourceSourceIndex is present,
10721 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
10722 disassembly. Otherwise, the resulting code cannot be compiled without
10725 ----------------------------------------
10726 26 May 2005. Summary of changes for version 20050526:
10728 1) ACPI CA Core Subsystem:
10730 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
10731 the module level (not within a control method.) These opcodes are
10733 exactly once at the time the table is loaded. This type of code was legal
10735 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
10737 order to provide backwards compatibility with earlier BIOS
10739 This eliminates the "Encountered executable code at module level" warning
10740 that was previously generated upon detection of such code.
10742 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
10743 inadvertently be generated during the lookup of namespace objects in the
10744 second pass parse of ACPI tables and control methods. It appears that
10746 problem could occur during the resolution of forward references to
10750 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
10751 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
10752 allows the deadlock detection debug code to be compiled out in the normal
10753 case, improving mutex performance (and overall subsystem performance)
10756 Implemented a handful of miscellaneous fixes for possible memory leaks on
10757 error conditions and error handling control paths. These fixes were
10758 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
10760 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
10762 to prevent a fault in this error case.
10764 Code and Data Size: Current and previous core subsystem library sizes are
10765 shown below. These are the code and data sizes for the acpica.lib
10767 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10768 any ACPI driver or OSPM code. The debug version of the code includes the
10769 debug output trace mechanism and has a much larger code and data size.
10771 that these values will vary depending on the efficiency of the compiler
10773 the compiler options used during generation.
10776 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10777 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10779 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10780 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10783 2) iASL Compiler/Disassembler:
10785 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
10786 the module level (not within a control method.) These operators will be
10787 executed once at the time the table is loaded. This type of code was
10789 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
10790 compiler in order to provide backwards compatibility with earlier BIOS
10794 The ACPI integer width (specified via the table revision ID or the -r
10795 override, 32 or 64 bits) is now used internally during compile-time
10797 folding to ensure that constants are truncated to 32 bits if necessary.
10798 Previously, the revision ID value was only emitted in the AML table
10801 An error message is now generated for the Mutex and Method operators if
10803 SyncLevel parameter is outside the legal range of 0 through 15.
10805 Fixed a problem with the Method operator ParameterTypes list handling
10807 3.0). Previously, more than 2 types or 2 arguments generated a syntax
10809 The actual underlying implementation of method argument typechecking is
10810 still under development, however.
10812 ----------------------------------------
10813 13 May 2005. Summary of changes for version 20050513:
10815 1) ACPI CA Core Subsystem:
10817 Implemented support for PCI Express root bridges -- added support for
10819 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
10821 The interpreter now automatically truncates incoming 64-bit constants to
10823 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
10825 also affects the iASL compiler constant folding. (Note: as per below, the
10826 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
10828 Fixed a problem where string and buffer objects with "static" pointers
10829 (pointers to initialization data within an ACPI table) were not handled
10830 consistently. The internal object copy operation now always copies the
10832 to a newly allocated buffer, regardless of whether the source object is
10835 Fixed a problem with the FromBCD operator where an implicit result
10836 conversion was improperly performed while storing the result to the
10838 operand. Since this is an "explicit conversion" operator, the implicit
10839 conversion should never be performed on the output.
10841 Fixed a problem with the CopyObject operator where a copy to an existing
10842 named object did not always completely overwrite the existing object
10844 at name. Specifically, a buffer-to-buffer copy did not delete the
10848 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
10850 structs for consistency.
10852 Code and Data Size: Current and previous core subsystem library sizes are
10853 shown below. These are the code and data sizes for the acpica.lib
10855 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10856 any ACPI driver or OSPM code. The debug version of the code includes the
10857 debug output trace mechanism and has a much larger code and data size.
10859 that these values will vary depending on the efficiency of the compiler
10861 the compiler options used during generation.
10864 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10865 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10866 Current Release: (Same sizes)
10867 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10868 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10871 2) iASL Compiler/Disassembler:
10873 The compiler now emits a warning if an attempt is made to generate a 64-
10875 integer constant from within a 32-bit ACPI table (Revision < 2). The
10877 is truncated to 32 bits.
10879 Fixed a problem with large package objects: if the static length of the
10880 package is greater than 255, the "variable length package" opcode is
10881 emitted. Previously, this caused an error. This requires an update to the
10882 ACPI spec, since it currently (incorrectly) states that packages larger
10884 255 elements are not allowed.
10886 The disassembler now correctly handles variable length packages and
10888 larger than 255 elements.
10890 ----------------------------------------
10891 08 April 2005. Summary of changes for version 20050408:
10893 1) ACPI CA Core Subsystem:
10895 Fixed three cases in the interpreter where an "index" argument to an ASL
10896 function was still (internally) 32 bits instead of the required 64 bits.
10897 This was the Index argument to the Index, Mid, and Match operators.
10899 The "strupr" function is now permanently local (AcpiUtStrupr), since this
10901 not a POSIX-defined function and not present in most kernel-level C
10902 libraries. All references to the C library strupr function have been
10906 Completed the deployment of static functions/prototypes. All prototypes
10908 the static attribute have been moved from the headers to the owning C
10911 Implemented an extract option (-e) for the AcpiBin utility (AML binary
10912 utility). This option allows the utility to extract individual ACPI
10914 from the output of AcpiDmp. It provides the same functionality of the
10915 acpixtract.pl perl script without the worry of setting the correct perl
10916 options. AcpiBin runs on Windows and has not yet been generated/validated
10918 the Linux/Unix environment (but should be soon).
10920 Updated and fixed the table dump option for AcpiBin (-d). This option
10921 converts a single ACPI table to a hex/ascii file, similar to the output
10925 Code and Data Size: Current and previous core subsystem library sizes are
10926 shown below. These are the code and data sizes for the acpica.lib
10928 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10929 any ACPI driver or OSPM code. The debug version of the code includes the
10930 debug output trace mechanism and has a much larger code and data size.
10932 that these values will vary depending on the efficiency of the compiler
10934 the compiler options used during generation.
10937 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
10938 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
10940 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10941 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10944 2) iASL Compiler/Disassembler:
10946 Disassembler fix: Added a check to ensure that the table length found in
10948 ACPI table header within the input file is not longer than the actual
10950 file size. This indicates some kind of file or table corruption.
10952 ----------------------------------------
10953 29 March 2005. Summary of changes for version 20050329:
10955 1) ACPI CA Core Subsystem:
10957 An error is now generated if an attempt is made to create a Buffer Field
10959 length zero (A CreateField with a length operand of zero.)
10961 The interpreter now issues a warning whenever executable code at the
10963 level is detected during ACPI table load. This will give some idea of the
10964 prevalence of this type of code.
10966 Implemented support for references to named objects (other than control
10967 methods) within package objects.
10969 Enhanced package object output for the debug object. Package objects are
10971 completely dumped, showing all elements.
10973 Enhanced miscellaneous object output for the debug object. Any object can
10974 now be written to the debug object (for example, a device object can be
10975 written, and the type of the object will be displayed.)
10977 The "static" qualifier has been added to all local functions across both
10979 core subsystem and the iASL compiler.
10981 The number of "long" lines (> 80 chars) within the source has been
10982 significantly reduced, by about 1/3.
10984 Cleaned up all header files to ensure that all CA/iASL functions are
10985 prototyped (even static functions) and the formatting is consistent.
10987 Two new header files have been added, acopcode.h and acnames.h.
10989 Removed several obsolete functions that were no longer used.
10991 Code and Data Size: Current and previous core subsystem library sizes are
10992 shown below. These are the code and data sizes for the acpica.lib
10994 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10995 any ACPI driver or OSPM code. The debug version of the code includes the
10996 debug output trace mechanism and has a much larger code and data size.
10998 that these values will vary depending on the efficiency of the compiler
11000 the compiler options used during generation.
11003 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11004 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11006 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11007 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11011 2) iASL Compiler/Disassembler:
11013 Fixed a problem with the resource descriptor generation/support. For the
11014 ResourceSourceIndex and the ResourceSource fields, both must be present,
11016 both must be not present - can't have one without the other.
11018 The compiler now returns non-zero from the main procedure if any errors
11020 occurred during the compilation.
11023 ----------------------------------------
11024 09 March 2005. Summary of changes for version 20050309:
11026 1) ACPI CA Core Subsystem:
11028 The string-to-buffer implicit conversion code has been modified again
11030 a change to the ACPI specification. In order to match the behavior of
11032 other major ACPI implementation, the target buffer is no longer truncated
11034 the source string is smaller than an existing target buffer. This change
11035 requires an update to the ACPI spec, and should eliminate the recent
11036 AE_AML_BUFFER_LIMIT issues.
11038 The "implicit return" support was rewritten to a new algorithm that
11040 the general case. Rather than attempt to determine when a method is about
11042 exit, the result of every ASL operator is saved momentarily until the
11044 next ASL operator is executed. Therefore, no matter how the method exits,
11045 there will always be a saved implicit return value. This feature is only
11046 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11048 AE_AML_NO_RETURN_VALUE errors when enabled.
11050 Implemented implicit conversion support for the predicate (operand) of
11052 If, Else, and While operators. String and Buffer arguments are
11054 converted to Integers.
11056 Changed the string-to-integer conversion behavior to match the new ACPI
11057 errata: "If no integer object exists, a new integer is created. The ASCII
11058 string is interpreted as a hexadecimal constant. Each string character is
11059 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11060 with the first character as the most significant digit, and ending with
11062 first non-hexadecimal character or end-of-string." This means that the
11064 non-hex character terminates the conversion and this is the code that was
11067 Fixed a problem where the ObjectType operator would fail (fault) when
11069 on an Index of a Package which pointed to a null package element. The
11070 operator now properly returns zero (Uninitialized) in this case.
11072 Fixed a problem where the While operator used excessive memory by not
11073 properly popping the result stack during execution. There was no memory
11075 after execution, however. (Code provided by Valery Podrezov.)
11077 Fixed a problem where references to control methods within Package
11079 caused the method to be invoked, instead of producing a reference object
11080 pointing to the method.
11082 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
11084 improve performance and reduce code size. (Code provided by Alexey
11087 Code and Data Size: Current and previous core subsystem library sizes are
11088 shown below. These are the code and data sizes for the acpica.lib
11090 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11091 any ACPI driver or OSPM code. The debug version of the code includes the
11092 debug output trace mechanism and has a much larger code and data size.
11094 that these values will vary depending on the efficiency of the compiler
11096 the compiler options used during generation.
11099 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11100 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11102 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11103 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11106 2) iASL Compiler/Disassembler:
11108 Fixed a problem with the Return operator with no arguments. Since the AML
11109 grammar for the byte encoding requires an operand for the Return opcode,
11111 compiler now emits a Return(Zero) for this case. An ACPI specification
11112 update has been written for this case.
11114 For tables other than the DSDT, namepath optimization is automatically
11115 disabled. This is because SSDTs can be loaded anywhere in the namespace,
11117 compiler has no knowledge of where, and thus cannot optimize namepaths.
11119 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
11120 inadvertently omitted from the ACPI specification, and will require an
11121 update to the spec.
11123 The source file scan for ASCII characters is now optional (-a). This
11125 was made because some vendors place non-ascii characters within comments.
11126 However, the scan is simply a brute-force byte compare to ensure all
11127 characters in the file are in the range 0x00 to 0x7F.
11129 Fixed a problem with the CondRefOf operator where the compiler was
11130 inappropriately checking for the existence of the target. Since the point
11132 the operator is to check for the existence of the target at run-time, the
11133 compiler no longer checks for the target existence.
11135 Fixed a problem where errors generated from the internal AML interpreter
11136 during constant folding were not handled properly, causing a fault.
11138 Fixed a problem with overly aggressive range checking for the Stall
11139 operator. The valid range (max 255) is now only checked if the operand is
11141 type Integer. All other operand types cannot be statically checked.
11143 Fixed a problem where control method references within the RefOf,
11145 and ObjectType operators were not treated properly. They are now treated
11147 actual references, not method invocations.
11149 Fixed and enhanced the "list namespace" option (-ln). This option was
11151 a number of releases ago.
11153 Improved error handling for the Field, IndexField, and BankField
11155 The compiler now cleanly reports and recovers from errors in the field
11156 component (FieldUnit) list.
11158 Fixed a disassembler problem where the optional ResourceDescriptor fields
11159 TRS and TTP were not always handled correctly.
11161 Disassembler - Comments in output now use "//" instead of "/*"
11163 ----------------------------------------
11164 28 February 2005. Summary of changes for version 20050228:
11166 1) ACPI CA Core Subsystem:
11168 Fixed a problem where the result of an Index() operator (an object
11169 reference) must increment the reference count on the target object for
11171 life of the object reference.
11173 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
11174 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
11176 resource descriptors.
11178 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
11179 Space Descriptor" string, indicating interpreter support for the
11183 Implemented header support for the new ACPI 3.0 FADT flag bits.
11185 Implemented header support for the new ACPI 3.0 PCI Express bits for the
11187 status/enable registers.
11189 Updated header support for the MADT processor local Apic struct and MADT
11190 platform interrupt source struct for new ACPI 3.0 fields.
11192 Implemented header support for the SRAT and SLIT ACPI tables.
11194 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
11198 Code and Data Size: Current and previous core subsystem library sizes are
11199 shown below. These are the code and data sizes for the acpica.lib
11201 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11202 any ACPI driver or OSPM code. The debug version of the code includes the
11203 debug output trace mechanism and has a much larger code and data size.
11205 that these values will vary depending on the efficiency of the compiler
11207 the compiler options used during generation.
11210 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11211 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11213 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11214 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11217 2) iASL Compiler/Disassembler:
11219 Fixed a problem with the internal 64-bit String-to-integer conversion
11221 strings less than two characters long.
11223 Fixed a problem with constant folding where the result of the Index()
11224 operator can not be considered a constant. This means that Index() cannot
11226 a type3 opcode and this will require an update to the ACPI specification.
11228 Disassembler: Implemented support for the TTP, MTP, and TRS resource
11229 descriptor fields. These fields were inadvertently ignored and not output
11231 the disassembly of the resource descriptor.
11234 ----------------------------------------
11235 11 February 2005. Summary of changes for version 20050211:
11237 1) ACPI CA Core Subsystem:
11239 Implemented ACPI 3.0 support for implicit conversion within the Match()
11240 operator. MatchObjects can now be of type integer, buffer, or string
11242 of just type integer. Package elements are implicitly converted to the
11244 of the MatchObject. This change aligns the behavior of Match() with the
11245 behavior of the other logical operators (LLess(), etc.) It also requires
11247 errata change to the ACPI specification as this support was intended for
11248 ACPI 3.0, but was inadvertently omitted.
11250 Fixed a problem with the internal implicit "to buffer" conversion.
11252 that are converted to buffers will cause buffer truncation if the string
11254 smaller than the target buffer. Integers that are converted to buffers
11256 not cause buffer truncation, only zero extension (both as per the ACPI
11257 spec.) The problem was introduced when code was added to truncate the
11258 buffer, but this should not be performed in all cases, only the string
11261 Fixed a problem with the Buffer and Package operators where the
11263 would get confused if two such operators were used as operands to an ASL
11264 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
11265 stack was not being popped after the execution of these operators,
11267 in an AE_NO_RETURN_VALUE exception.
11269 Fixed a problem with constructs of the form Store(Index(...),...). The
11270 reference object returned from Index was inadvertently resolved to an
11272 value. This problem was introduced in version 20050114 when the behavior
11274 Store() was modified to restrict the object types that can be used as the
11275 source operand (to match the ACPI specification.)
11277 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
11279 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
11281 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
11283 Code and Data Size: Current and previous core subsystem library sizes are
11284 shown below. These are the code and data sizes for the acpica.lib
11286 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11287 any ACPI driver or OSPM code. The debug version of the code includes the
11288 debug output trace mechanism and has a much larger code and data size.
11290 that these values will vary depending on the efficiency of the compiler
11292 the compiler options used during generation.
11295 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11296 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11298 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11299 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11302 2) iASL Compiler/Disassembler:
11304 Fixed a code generation problem in the constant folding optimization code
11305 where incorrect code was generated if a constant was reduced to a buffer
11306 object (i.e., a reduced type 5 opcode.)
11308 Fixed a typechecking problem for the ToBuffer operator. Caused by an
11309 incorrect return type in the internal opcode information table.
11311 ----------------------------------------
11312 25 January 2005. Summary of changes for version 20050125:
11314 1) ACPI CA Core Subsystem:
11316 Fixed a recently introduced problem with the Global Lock where the
11317 underlying semaphore was not created. This problem was introduced in
11318 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
11319 Acquire() operation on _GL.
11321 The local object cache is now optional, and is disabled by default. Both
11322 AcpiExec and the iASL compiler enable the cache because they run in user
11323 mode and this enhances their performance. #define
11324 ACPI_ENABLE_OBJECT_CACHE
11325 to enable the local cache.
11327 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
11329 optional "implicit return" support where an error was returned if no
11331 object was expected, but one was implicitly returned. AE_OK is now
11333 in this case and the implicitly returned object is deleted.
11334 AcpiUtEvaluateObject is only occasionally used, and only to execute
11336 methods such as _STA and _INI where the return type is known up front.
11338 Fixed a few issues with the internal convert-to-integer code. It now
11340 an error if an attempt is made to convert a null string, a string of only
11341 blanks/tabs, or a zero-length buffer. This affects both implicit
11343 and explicit conversion via the ToInteger() operator.
11345 The internal debug code in AcpiUtAcquireMutex has been commented out. It
11347 not needed for normal operation and should increase the performance of
11349 entire subsystem. The code remains in case it is needed for debug
11353 The AcpiExec source and makefile are included in the Unix/Linux package
11357 Code and Data Size: Current and previous core subsystem library sizes are
11358 shown below. These are the code and data sizes for the acpica.lib
11360 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11361 any ACPI driver or OSPM code. The debug version of the code includes the
11362 debug output trace mechanism and has a much larger code and data size.
11364 that these values will vary depending on the efficiency of the compiler
11366 the compiler options used during generation.
11369 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11370 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11372 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11373 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11375 2) iASL Compiler/Disassembler:
11377 Switch/Case support: A warning is now issued if the type of the Switch
11379 cannot be determined at compile time. For example, Switch(Arg0) will
11380 generate the warning, and the type is assumed to be an integer. As per
11382 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
11386 Switch/Case support: Implemented support for buffer and string objects as
11387 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
11388 buffers and strings.
11390 Switch/Case support: The emitted code for the LEqual() comparisons now
11392 the switch value as the first operand, not the second. The case value is
11394 the second operand, and this allows the case value to be implicitly
11395 converted to the type of the switch value, not the other way around.
11397 Switch/Case support: Temporary variables are now emitted immediately
11399 the control method, not at the global level. This means that there are
11401 36 temps available per-method, not 36 temps per-module as was the case
11403 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
11405 ----------------------------------------
11406 14 January 2005. Summary of changes for version 20050114:
11408 Added 2005 copyright to all module headers. This affects every module in
11409 the core subsystem, iASL compiler, and the utilities.
11411 1) ACPI CA Core Subsystem:
11413 Fixed an issue with the String-to-Buffer conversion code where the string
11414 null terminator was not included in the buffer after conversion, but
11416 is existing ASL that assumes the string null terminator is included. This
11418 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
11419 introduced in the previous version when the code was updated to correctly
11420 set the converted buffer size as per the ACPI specification. The ACPI
11422 is ambiguous and will be updated to specify that the null terminator must
11424 included in the converted buffer. This also affects the ToBuffer() ASL
11427 Fixed a problem with the Mid() ASL/AML operator where it did not work
11428 correctly on Buffer objects. Newly created sub-buffers were not being
11433 Fixed a problem in AcpiTbFindTable where incorrect string compares were
11434 performed on the OemId and OemTableId table header fields. These fields
11436 not null terminated, so strncmp is now used instead of strcmp.
11438 Implemented a restriction on the Store() ASL/AML operator to align the
11439 behavior with the ACPI specification. Previously, any object could be
11441 as the source operand. Now, the only objects that may be used are
11443 Buffers, Strings, Packages, Object References, and DDB Handles. If
11444 necessary, the original behavior can be restored by enabling the
11445 EnableInterpreterSlack flag.
11447 Enhanced the optional "implicit return" support to allow an implicit
11449 value from methods that are invoked externally via the AcpiEvaluateObject
11450 interface. This enables implicit returns from the _STA and _INI methods,
11453 Changed the Revision() ASL/AML operator to return the current version of
11455 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
11457 the supported ACPI version (This is the function of the _REV method).
11459 Updated the _REV predefined method to return the currently supported
11463 Implemented batch mode option for the AcpiExec utility (-b).
11465 Code and Data Size: Current and previous core subsystem library sizes are
11466 shown below. These are the code and data sizes for the acpica.lib
11468 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11469 any ACPI driver or OSPM code. The debug version of the code includes the
11470 debug output trace mechanism and has a much larger code and data size.
11472 that these values will vary depending on the efficiency of the compiler
11474 the compiler options used during generation.
11477 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11478 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11480 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11481 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11483 ----------------------------------------
11484 10 December 2004. Summary of changes for version 20041210:
11486 ACPI 3.0 support is nearing completion in both the iASL compiler and the
11487 ACPI CA core subsystem.
11489 1) ACPI CA Core Subsystem:
11491 Fixed a problem in the ToDecimalString operator where the resulting
11493 length was incorrectly calculated. The length is now calculated exactly,
11494 eliminating incorrect AE_STRING_LIMIT exceptions.
11496 Fixed a problem in the ToHexString operator to allow a maximum 200
11498 string to be produced.
11500 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
11502 routine where the length of the resulting buffer was not truncated to the
11503 new size (if the target buffer already existed).
11505 Code and Data Size: Current and previous core subsystem library sizes are
11506 shown below. These are the code and data sizes for the acpica.lib
11508 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11509 any ACPI driver or OSPM code. The debug version of the code includes the
11510 debug output trace mechanism and has a much larger code and data size.
11512 that these values will vary depending on the efficiency of the compiler
11514 the compiler options used during generation.
11517 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11518 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11520 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11521 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11524 2) iASL Compiler/Disassembler:
11526 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
11527 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
11528 Includes support in the disassembler.
11530 Implemented support for the new (ACPI 3.0) parameter to the Register
11534 Fixed a problem where the _HE resource name for the Interrupt macro was
11535 referencing bit 0 instead of bit 1.
11537 Implemented check for maximum 255 interrupts in the Interrupt macro.
11539 Fixed a problem with the predefined resource descriptor names where
11540 incorrect AML code was generated if the offset within the resource buffer
11541 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
11542 but did not update the surrounding package lengths.
11544 Changes to the Dma macro: All channels within the channel list must be
11546 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
11547 optional (default is BusMaster).
11549 Implemented check for maximum 7 data bytes for the VendorShort macro.
11551 The ReadWrite parameter is now optional for the Memory32 and similar
11554 ----------------------------------------
11555 03 December 2004. Summary of changes for version 20041203:
11557 1) ACPI CA Core Subsystem:
11559 The low-level field insertion/extraction code (exfldio) has been
11561 rewritten to eliminate unnecessary complexity, bugs, and boundary
11564 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
11566 operators where the input operand could be inadvertently deleted if no
11567 conversion was necessary (e.g., if the input to ToInteger was an Integer
11570 Fixed a problem with the ToDecimalString and ToHexString where an
11572 exception code was returned if the resulting string would be > 200 chars.
11573 AE_STRING_LIMIT is now returned.
11575 Fixed a problem with the Concatenate operator where AE_OK was always
11576 returned, even if the operation failed.
11578 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
11579 semaphores to be allocated.
11581 Code and Data Size: Current and previous core subsystem library sizes are
11582 shown below. These are the code and data sizes for the acpica.lib
11584 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11585 any ACPI driver or OSPM code. The debug version of the code includes the
11586 debug output trace mechanism and has a much larger code and data size.
11588 that these values will vary depending on the efficiency of the compiler
11590 the compiler options used during generation.
11593 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11594 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11596 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11597 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11600 2) iASL Compiler/Disassembler:
11602 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
11603 recently introduced in 20041119.
11605 Fixed a problem with the ToUUID macro where the upper nybble of each
11607 byte was inadvertently set to zero.
11609 ----------------------------------------
11610 19 November 2004. Summary of changes for version 20041119:
11612 1) ACPI CA Core Subsystem:
11614 Fixed a problem in the internal ConvertToInteger routine where new
11616 were not truncated to 32 bits for 32-bit ACPI tables. This routine
11618 buffers and strings to integers.
11620 Implemented support to store a value to an Index() on a String object.
11622 is an ACPI 2.0 feature that had not yet been implemented.
11624 Implemented new behavior for storing objects to individual package
11626 (via the Index() operator). The previous behavior was to invoke the
11628 conversion rules if an object was already present at the index. The new
11629 behavior is to simply delete any existing object and directly store the
11631 object. Although the ACPI specification seems unclear on this subject,
11633 ACPI implementations behave in this manner. (This is the root of the
11634 AE_BAD_HEX_CONSTANT issue.)
11636 Modified the RSDP memory scan mechanism to support the extended checksum
11638 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
11639 RSDP signature is found with a valid checksum.
11641 Code and Data Size: Current and previous core subsystem library sizes are
11642 shown below. These are the code and data sizes for the acpica.lib
11644 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11645 any ACPI driver or OSPM code. The debug version of the code includes the
11646 debug output trace mechanism and has a much larger code and data size.
11648 that these values will vary depending on the efficiency of the compiler
11650 the compiler options used during generation.
11653 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11654 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11656 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11657 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11660 2) iASL Compiler/Disassembler:
11662 Fixed a missing semicolon in the aslcompiler.y file.
11664 ----------------------------------------
11665 05 November 2004. Summary of changes for version 20041105:
11667 1) ACPI CA Core Subsystem:
11669 Implemented support for FADT revision 2. This was an interim table
11671 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
11673 Implemented optional support to allow uninitialized LocalX and ArgX
11674 variables in a control method. The variables are initialized to an
11676 object with a value of zero. This support is enabled by setting the
11677 AcpiGbl_EnableInterpreterSlack flag to TRUE.
11679 Implemented support for Integer objects for the SizeOf operator. Either
11681 or 8 is returned, depending on the current integer size (32-bit or 64-
11683 depending on the parent table revision).
11685 Fixed a problem in the implementation of the SizeOf and ObjectType
11687 where the operand was resolved to a value too early, causing incorrect
11688 return values for some objects.
11690 Fixed some possible memory leaks during exceptional conditions.
11692 Code and Data Size: Current and previous core subsystem library sizes are
11693 shown below. These are the code and data sizes for the acpica.lib
11695 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11696 any ACPI driver or OSPM code. The debug version of the code includes the
11697 debug output trace mechanism and has a much larger code and data size.
11699 that these values will vary depending on the efficiency of the compiler
11701 the compiler options used during generation.
11704 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11705 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11707 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11708 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11711 2) iASL Compiler/Disassembler:
11713 Implemented support for all ACPI 3.0 reserved names and methods.
11715 Implemented all ACPI 3.0 grammar elements in the front-end, including
11716 support for semicolons.
11718 Implemented the ACPI 3.0 Function() and ToUUID() macros
11720 Fixed a problem in the disassembler where a Scope() operator would not be
11721 emitted properly if the target of the scope was in another table.
11723 ----------------------------------------
11724 15 October 2004. Summary of changes for version 20041015:
11726 Note: ACPI CA is currently undergoing an in-depth and complete formal
11727 evaluation to test/verify the following areas. Other suggestions are
11728 welcome. This will result in an increase in the frequency of releases and
11729 the number of bug fixes in the next few months.
11730 - Functional tests for all ASL/AML operators
11731 - All implicit/explicit type conversions
11732 - Bit fields and operation regions
11733 - 64-bit math support and 32-bit-only "truncated" math support
11734 - Exceptional conditions, both compiler and interpreter
11735 - Dynamic object deletion and memory leaks
11736 - ACPI 3.0 support when implemented
11737 - External interfaces to the ACPI subsystem
11740 1) ACPI CA Core Subsystem:
11742 Fixed two alignment issues on 64-bit platforms - within debug statements
11744 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
11746 field within the non-aligned ACPI generic address structure.
11748 Fixed a problem in the Increment and Decrement operators where incorrect
11749 operand resolution could result in the inadvertent modification of the
11750 original integer when the integer is passed into another method as an
11751 argument and the arg is then incremented/decremented.
11753 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
11755 BCD number were truncated during conversion.
11757 Fixed a problem in the ToDecimal operator where the length of the
11759 string could be set incorrectly too long if the input operand was a
11763 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
11765 within a buffer would prematurely terminate a compare between buffer
11768 Added a check for string overflow (>200 characters as per the ACPI
11769 specification) during the Concatenate operator with two string operands.
11771 Code and Data Size: Current and previous core subsystem library sizes are
11772 shown below. These are the code and data sizes for the acpica.lib
11774 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11775 any ACPI driver or OSPM code. The debug version of the code includes the
11776 debug output trace mechanism and has a much larger code and data size.
11778 that these values will vary depending on the efficiency of the compiler
11780 the compiler options used during generation.
11783 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11784 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11786 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11787 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11791 2) iASL Compiler/Disassembler:
11793 Allow the use of the ObjectType operator on uninitialized Locals and Args
11794 (returns 0 as per the ACPI specification).
11796 Fixed a problem where the compiler would fault if there was a syntax
11798 in the FieldName of all of the various CreateXXXField operators.
11800 Disallow the use of lower case letters within the EISAID macro, as per
11802 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
11804 U is an uppercase letter and N is a hex digit.
11807 ----------------------------------------
11808 06 October 2004. Summary of changes for version 20041006:
11810 1) ACPI CA Core Subsystem:
11812 Implemented support for the ACPI 3.0 Timer operator. This ASL function
11813 implements a 64-bit timer with 100 nanosecond granularity.
11815 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
11816 implement the ACPI 3.0 Timer operator. This allows the host OS to
11818 the timer with the best clock available. Also, it keeps the core
11820 out of the clock handling business, since the host OS (usually) performs
11823 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
11824 functions use a 64-bit address which is part of the packed ACPI Generic
11825 Address Structure. Since the structure is non-aligned, the alignment
11827 are now used to extract the address to a local variable before use.
11829 Fixed a problem where the ToInteger operator assumed all input strings
11831 hexadecimal. The operator now handles both decimal strings and hex
11833 (prefixed with "0x").
11835 Fixed a problem where the string length in the string object created as a
11836 result of the internal ConvertToString procedure could be incorrect. This
11837 potentially affected all implicit conversions and also the
11839 and ToHexString operators.
11841 Fixed two problems in the ToString operator. If the length parameter was
11842 zero, an incorrect string object was created and the value of the input
11843 length parameter was inadvertently changed from zero to Ones.
11845 Fixed a problem where the optional ResourceSource string in the
11847 resource macro was ignored.
11849 Simplified the interfaces to the internal division functions, reducing
11851 size and complexity.
11853 Code and Data Size: Current and previous core subsystem library sizes are
11854 shown below. These are the code and data sizes for the acpica.lib
11856 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11857 any ACPI driver or OSPM code. The debug version of the code includes the
11858 debug output trace mechanism and has a much larger code and data size.
11860 that these values will vary depending on the efficiency of the compiler
11862 the compiler options used during generation.
11865 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11866 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11868 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11869 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11872 2) iASL Compiler/Disassembler:
11874 Implemented support for the ACPI 3.0 Timer operator.
11876 Fixed a problem where the Default() operator was inadvertently ignored in
11878 Switch/Case block. This was a problem in the translation of the Switch
11879 statement to If...Else pairs.
11881 Added support to allow a standalone Return operator, with no parentheses
11885 Fixed a problem with code generation for the ElseIf operator where the
11886 translated Else...If parse tree was improperly constructed leading to the
11889 ----------------------------------------
11890 22 September 2004. Summary of changes for version 20040922:
11892 1) ACPI CA Core Subsystem:
11894 Fixed a problem with the implementation of the LNot() operator where
11896 was not returned for the TRUE case. Changed the code to return Ones
11898 of (!Arg) which was usually 1. This change affects iASL constant folding
11900 this operator also.
11902 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
11904 initialized properly -- Now zero the entire buffer in this case where the
11905 buffer already exists.
11907 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
11908 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
11909 related code considerably. This will require changes/updates to all OS
11910 interface layers (OSLs.)
11912 Implemented a new external interface, AcpiInstallExceptionHandler, to
11914 a system exception handler to be installed. This handler is invoked upon
11916 run-time exception that occurs during control method execution.
11918 Added support for the DSDT in AcpiTbFindTable. This allows the
11919 DataTableRegion() operator to access the local copy of the DSDT.
11921 Code and Data Size: Current and previous core subsystem library sizes are
11922 shown below. These are the code and data sizes for the acpica.lib
11924 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11925 any ACPI driver or OSPM code. The debug version of the code includes the
11926 debug output trace mechanism and has a much larger code and data size.
11928 that these values will vary depending on the efficiency of the compiler
11930 the compiler options used during generation.
11933 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
11934 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
11936 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11937 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11940 2) iASL Compiler/Disassembler:
11942 Fixed a problem with constant folding and the LNot operator. LNot was
11943 returning 1 in the TRUE case, not Ones as per the ACPI specification.
11945 could result in the generation of an incorrect folded/reduced constant.
11947 End-Of-File is now allowed within a "//"-style comment. A parse error no
11948 longer occurs if such a comment is at the very end of the input ASL
11952 Implemented the "-r" option to override the Revision in the table header.
11953 The initial use of this option will be to simplify the evaluation of the
11955 interpreter by allowing a single ASL source module to be compiled for
11957 32-bit or 64-bit integers.
11960 ----------------------------------------
11961 27 August 2004. Summary of changes for version 20040827:
11963 1) ACPI CA Core Subsystem:
11965 - Implemented support for implicit object conversion in the non-numeric
11966 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
11968 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
11969 the second operand is implicitly converted on the fly to match the type
11971 the first operand. For example:
11973 LEqual (Source1, Source2)
11975 Source1 and Source2 must each evaluate to an integer, a string, or a
11977 The data type of Source1 dictates the required type of Source2. Source2
11979 implicitly converted if necessary to match the type of Source1.
11981 - Updated and corrected the behavior of the string conversion support.
11983 rules concerning conversion of buffers to strings (according to the ACPI
11984 specification) are as follows:
11986 ToDecimalString - explicit byte-wise conversion of buffer to string of
11987 decimal values (0-255) separated by commas. ToHexString - explicit byte-
11989 conversion of buffer to string of hex values (0-FF) separated by commas.
11990 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
11992 copy with no transform except NULL terminated. Any other implicit buffer-
11994 string conversion - byte-wise conversion of buffer to string of hex
11996 (0-FF) separated by spaces.
11998 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12000 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12002 one byte too short in the case of a node in the root scope. This could
12003 cause a fault during debug output.
12005 - Code and Data Size: Current and previous core subsystem library sizes
12007 shown below. These are the code and data sizes for the acpica.lib
12009 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12010 any ACPI driver or OSPM code. The debug version of the code includes the
12011 debug output trace mechanism and has a much larger code and data size.
12013 that these values will vary depending on the efficiency of the compiler
12015 the compiler options used during generation.
12018 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12019 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12021 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12022 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12025 2) iASL Compiler/Disassembler:
12027 - Fixed a Linux generation error.
12030 ----------------------------------------
12031 16 August 2004. Summary of changes for version 20040816:
12033 1) ACPI CA Core Subsystem:
12035 Designed and implemented support within the AML interpreter for the so-
12036 called "implicit return". This support returns the result of the last
12038 operation within a control method, in the absence of an explicit Return()
12039 operator. A few machines depend on this behavior, even though it is not
12040 explicitly supported by the ASL language. It is optional support that
12042 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12044 Removed support for the PCI_Config address space from the internal low
12046 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12047 support was not used internally, and would not work correctly anyway
12049 the PCI bus number and segment number were not supported. There are
12050 separate interfaces for PCI configuration space access because of the
12054 Code and Data Size: Current and previous core subsystem library sizes are
12055 shown below. These are the code and data sizes for the acpica.lib
12057 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12058 any ACPI driver or OSPM code. The debug version of the code includes the
12059 debug output trace mechanism and has a much larger code and data size.
12061 that these values will vary depending on the efficiency of the compiler
12063 the compiler options used during generation.
12066 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12067 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12069 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12070 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12073 2) iASL Compiler/Disassembler:
12075 Fixed a problem where constants in ASL expressions at the root level (not
12076 within a control method) could be inadvertently truncated during code
12077 generation. This problem was introduced in the 20040715 release.
12080 ----------------------------------------
12081 15 July 2004. Summary of changes for version 20040715:
12083 1) ACPI CA Core Subsystem:
12085 Restructured the internal HW GPE interfaces to pass/track the current
12087 of interrupts (enabled/disabled) in order to avoid possible deadlock and
12088 increase flexibility of the interfaces.
12090 Implemented a "lexicographical compare" for String and Buffer objects
12092 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
12094 as per further clarification to the ACPI specification. Behavior is
12096 to C library "strcmp".
12098 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
12099 external function. In the 32-bit non-debug case, the stack use has been
12100 reduced from 168 bytes to 32 bytes.
12102 Deployed a new run-time configuration flag,
12103 AcpiGbl_EnableInterpreterSlack,
12104 whose purpose is to allow the AML interpreter to forgive certain bad AML
12105 constructs. Default setting is FALSE.
12107 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
12109 support code. If enabled, it allows field access to go beyond the end of
12111 region definition if the field is within the region length rounded up to
12113 next access width boundary (a common coding error.)
12115 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
12116 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
12118 symbols are lowercased by the latest version of the AcpiSrc tool.
12120 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
12121 rename "Register" to simply "Reg" to prevent certain compilers from
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, 11.5K Data, 89.3K Total
12137 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12139 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12140 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12143 2) iASL Compiler/Disassembler:
12145 Implemented full support for Package objects within the Case() operator.
12146 Note: The Break() operator is currently not supported within Case blocks
12147 (TermLists) as there is some question about backward compatibility with
12152 Fixed a problem where complex terms were not supported properly within
12156 Eliminated extraneous warning for compiler-emitted reserved names of the
12157 form "_T_x". (Used in Switch/Case operators.)
12159 Eliminated optimization messages for "_T_x" objects and small constants
12160 within the DefinitionBlock operator.
12163 ----------------------------------------
12164 15 June 2004. Summary of changes for version 20040615:
12166 1) ACPI CA Core Subsystem:
12168 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12170 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12173 All directory names in the entire source package are lower case, as they
12174 were in earlier releases.
12176 Implemented "Disassemble" command in the AML debugger that will
12178 a single control method.
12180 Code and Data Size: Current and previous core subsystem library sizes are
12181 shown below. These are the code and data sizes for the acpica.lib
12183 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12184 any ACPI driver or OSPM code. The debug version of the code includes the
12185 debug output trace mechanism and has a much larger code and data size.
12187 that these values will vary depending on the efficiency of the compiler
12189 the compiler options used during generation.
12192 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12193 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12196 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12197 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12200 2) iASL Compiler/Disassembler:
12202 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12204 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12207 All directory names in the entire source package are lower case, as they
12208 were in earlier releases.
12210 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
12213 Fixed an issue with the Windows version of the compiler where later
12215 of Windows place the FADT in the registry under the name "FADT" and not
12216 "FACP" as earlier versions did. This applies when using the -g or -
12217 d<nofilename> options. The compiler now looks for both strings as
12220 Fixed a problem with compiler namepath optimization where a namepath
12222 the Scope() operator could not be optimized if the namepath was a subpath
12224 the current scope path.
12226 ----------------------------------------
12227 27 May 2004. Summary of changes for version 20040527:
12229 1) ACPI CA Core Subsystem:
12231 Completed a new design and implementation for EBDA (Extended BIOS Data
12233 support in the RSDP scan code. The original code improperly scanned for
12235 EBDA by simply scanning from memory location 0 to 0x400. The correct
12237 is to first obtain the EBDA pointer from within the BIOS data area, then
12238 scan 1K of memory starting at the EBDA pointer. There appear to be few
12240 any machines that place the RSDP in the EBDA, however.
12242 Integrated a fix for a possible fault during evaluation of BufferField
12243 arguments. Obsolete code that was causing the problem was removed.
12245 Found and fixed a problem in the Field Support Code where data could be
12246 corrupted on a bit field read that starts on an aligned boundary but does
12247 not end on an aligned boundary. Merged the read/write "datum length"
12248 calculation code into a common procedure.
12250 Rolled in a couple of changes to the FreeBSD-specific header.
12253 Code and Data Size: Current and previous core subsystem library sizes are
12254 shown below. These are the code and data sizes for the acpica.lib
12256 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12257 any ACPI driver or OSPM code. The debug version of the code includes the
12258 debug output trace mechanism and has a much larger code and data size.
12260 that these values will vary depending on the efficiency of the compiler
12262 the compiler options used during generation.
12265 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12266 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12268 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12269 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12272 2) iASL Compiler/Disassembler:
12274 Fixed a generation warning produced by some overly-verbose compilers for
12278 ----------------------------------------
12279 14 May 2004. Summary of changes for version 20040514:
12281 1) ACPI CA Core Subsystem:
12283 Fixed a problem where hardware GPE enable bits sometimes not set properly
12284 during and after GPE method execution. Result of 04/27 changes.
12286 Removed extra "clear all GPEs" when sleeping/waking.
12288 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
12289 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
12291 the new AcpiEv* calls as appropriate.
12293 ACPI_OS_NAME was removed from the OS-specific headers. The default name
12295 now "Microsoft Windows NT" for maximum compatibility. However this can
12297 changed by modifying the acconfig.h file.
12299 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
12300 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
12302 Run _INI methods on ThermalZone objects. This is against the ACPI
12303 specification, but there is apparently ASL code in the field that has
12305 _INI methods, and apparently "other" AML interpreters execute them.
12307 Performed a full 16/32/64 bit lint that resulted in some small changes.
12309 Added a sleep simulation command to the AML debugger to test sleep code.
12311 Code and Data Size: Current and previous core subsystem library sizes are
12312 shown below. These are the code and data sizes for the acpica.lib
12314 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12315 any ACPI driver or OSPM code. The debug version of the code includes the
12316 debug output trace mechanism and has a much larger code and data size.
12318 that these values will vary depending on the efficiency of the compiler
12320 the compiler options used during generation.
12323 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12324 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12326 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12327 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12329 ----------------------------------------
12330 27 April 2004. Summary of changes for version 20040427:
12332 1) ACPI CA Core Subsystem:
12334 Completed a major overhaul of the GPE handling within ACPI CA. There are
12335 now three types of GPEs: wake-only, runtime-only, and combination
12337 The only GPEs allowed to be combination wake/run are for button-style
12338 devices such as a control-method power button, control-method sleep
12340 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
12342 referenced by any _PRW methods are marked for "runtime" and hardware
12343 enabled. Any GPE that is referenced by a _PRW method is marked for
12345 (and disabled at runtime). However, at sleep time, only those GPEs that
12346 have been specifically enabled for wake via the AcpiEnableGpe interface
12348 actually be hardware enabled.
12350 A new external interface has been added, AcpiSetGpeType(), that is meant
12352 be used by device drivers to force a GPE to a particular type. It will
12354 especially useful for the drivers for the button devices mentioned above.
12356 Completed restructuring of the ACPI CA initialization sequence so that
12357 default operation region handlers are installed before GPEs are
12359 and the _PRW methods are executed. This will prevent errors when the
12361 methods attempt to access system memory or I/O space.
12363 GPE enable/disable no longer reads the GPE enable register. We now keep
12365 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
12366 thus no longer depend on the hardware to maintain these bits.
12368 Always clear the wake status and fixed/GPE status bits before sleep, even
12371 Improved the AML debugger output for displaying the GPE blocks and their
12374 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
12378 Fixed a problem where the physical address was incorrectly calculated
12380 the Load() operator was used to directly load from an Operation Region
12382 loading from a Field object.) Also added check for minimum table length
12386 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
12389 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
12390 consistency with the other fields returned.
12392 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
12393 structure for each GPE in the system, so the size of this structure is
12396 CPU stack requirement reduction: Cleaned up the method execution and
12398 evaluation paths so that now a parameter structure is passed, instead of
12399 copying the various method parameters over and over again.
12401 In evregion.c: Correctly exit and reenter the interpreter region if and
12402 only if dispatching an operation region request to a user-installed
12404 Do not exit/reenter when dispatching to a default handler (e.g., default
12405 system memory or I/O handlers)
12408 Notes for updating drivers for the new GPE support. The following
12410 must be made to ACPI-related device drivers that are attached to one or
12412 GPEs: (This information will be added to the ACPI CA Programmer
12415 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
12417 explicitly call AcpiEnableGpe.
12418 2) There is a new interface called AcpiSetGpeType. This should be called
12419 before enabling the GPE. Also, this interface will automatically disable
12420 the GPE if it is currently enabled.
12421 3) AcpiEnableGpe no longer supports a GPE type flag.
12423 Specific drivers that must be changed:
12425 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
12426 AeGpeHandler, NULL);
12427 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
12428 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
12430 2) Button Drivers (Power, Lid, Sleep):
12431 Run _PRW method under parent device
12432 If _PRW exists: /* This is a control-method button */
12433 Extract GPE number and possibly GpeDevice
12434 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
12435 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
12437 For all other devices that have _PRWs, we automatically set the GPE type
12439 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
12441 must be done on a selective basis, usually requiring some kind of user
12443 to allow the user to pick the wake devices.
12446 Code and Data Size: Current and previous core subsystem library sizes are
12447 shown below. These are the code and data sizes for the acpica.lib
12449 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12450 any ACPI driver or OSPM code. The debug version of the code includes the
12451 debug output trace mechanism and has a much larger code and data size.
12453 that these values will vary depending on the efficiency of the compiler
12455 the compiler options used during generation.
12458 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12459 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12462 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12463 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12467 ----------------------------------------
12468 02 April 2004. Summary of changes for version 20040402:
12470 1) ACPI CA Core Subsystem:
12472 Fixed an interpreter problem where an indirect store through an ArgX
12473 parameter was incorrectly applying the "implicit conversion rules" during
12474 the store. From the ACPI specification: "If the target is a method local
12476 argument (LocalX or ArgX), no conversion is performed and the result is
12477 stored directly to the target". The new behavior is to disable implicit
12478 conversion during ALL stores to an ArgX.
12480 Changed the behavior of the _PRW method scan to ignore any and all errors
12481 returned by a given _PRW. This prevents the scan from aborting from the
12482 failure of any single _PRW.
12484 Moved the runtime configuration parameters from the global init procedure
12486 static variables in acglobal.h. This will allow the host to override the
12487 default values easily.
12489 Code and Data Size: Current and previous core subsystem library sizes are
12490 shown below. These are the code and data sizes for the acpica.lib
12492 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12493 any ACPI driver or OSPM code. The debug version of the code includes the
12494 debug output trace mechanism and has a much larger code and data size.
12496 that these values will vary depending on the efficiency of the compiler
12498 the compiler options used during generation.
12501 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12502 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12504 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12505 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12508 2) iASL Compiler/Disassembler:
12510 iASL now fully disassembles SSDTs. However, External() statements are
12512 generated automatically for unresolved symbols at this time. This is a
12513 planned feature for future implementation.
12515 Fixed a scoping problem in the disassembler that occurs when the type of
12517 target of a Scope() operator is overridden. This problem caused an
12518 incorrectly nested internal namespace to be constructed.
12520 Any warnings or errors that are emitted during disassembly are now
12522 out automatically so that the resulting file can be recompiled without
12526 ----------------------------------------
12527 26 March 2004. Summary of changes for version 20040326:
12529 1) ACPI CA Core Subsystem:
12531 Implemented support for "wake" GPEs via interaction between GPEs and the
12532 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
12533 identified as a WAKE GPE and by default will no longer be enabled at
12534 runtime. Previously, we were blindly enabling all GPEs with a
12536 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
12538 believe this has been the cause of thousands of "spurious" GPEs on some
12541 This new GPE behavior is can be reverted to the original behavior (enable
12542 ALL GPEs at runtime) via a runtime flag.
12544 Fixed a problem where aliased control methods could not access objects
12545 properly. The proper scope within the namespace was not initialized
12546 (transferred to the target of the aliased method) before executing the
12549 Fixed a potential race condition on internal object deletion on the
12551 object in AcpiEvaluateObject.
12553 Integrated a fix for resource descriptors where both _MEM and _MTP were
12554 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
12555 wide, 0x0F instead of 0x03.)
12557 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
12560 fault in some cases.
12562 Updated Notify() values for debug statements in evmisc.c
12564 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
12566 Code and Data Size: Current and previous core subsystem library sizes are
12567 shown below. These are the code and data sizes for the acpica.lib
12569 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12570 any ACPI driver or OSPM code. The debug version of the code includes the
12571 debug output trace mechanism and has a much larger code and data size.
12573 that these values will vary depending on the efficiency of the compiler
12575 the compiler options used during generation.
12579 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12580 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12582 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12583 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12585 ----------------------------------------
12586 11 March 2004. Summary of changes for version 20040311:
12588 1) ACPI CA Core Subsystem:
12590 Fixed a problem where errors occurring during the parse phase of control
12591 method execution did not abort cleanly. For example, objects created and
12592 installed in the namespace were not deleted. This caused all subsequent
12593 invocations of the method to return the AE_ALREADY_EXISTS exception.
12595 Implemented a mechanism to force a control method to "Serialized"
12597 if the method attempts to create namespace objects. (The root of the
12598 AE_ALREADY_EXISTS problem.)
12600 Implemented support for the predefined _OSI "internal" control method.
12601 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
12603 "Windows 2001.1", and can be easily upgraded for new strings as
12605 This feature will allow "other" operating systems to execute the fully
12606 tested, "Windows" code path through the ASL code
12608 Global Lock Support: Now allows multiple acquires and releases with any
12609 internal thread. Removed concept of "owning thread" for this special
12612 Fixed two functions that were inappropriately declaring large objects on
12614 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
12616 method execution considerably.
12618 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
12619 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
12621 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
12622 defined on the machine.
12624 Implemented two runtime options: One to force all control method
12626 to "Serialized" to mimic Windows behavior, another to disable _OSI
12628 if it causes problems on a given machine.
12630 Code and Data Size: Current and previous core subsystem library sizes are
12631 shown below. These are the code and data sizes for the acpica.lib
12633 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12634 any ACPI driver or OSPM code. The debug version of the code includes the
12635 debug output trace mechanism and has a much larger code and data size.
12637 that these values will vary depending on the efficiency of the compiler
12639 the compiler options used during generation.
12642 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12643 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12645 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12646 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12648 2) iASL Compiler/Disassembler:
12650 Fixed an array size problem for FreeBSD that would cause the compiler to
12653 ----------------------------------------
12654 20 February 2004. Summary of changes for version 20040220:
12657 1) ACPI CA Core Subsystem:
12659 Implemented execution of _SxD methods for Device objects in the
12660 GetObjectInfo interface.
12662 Fixed calls to _SST method to pass the correct arguments.
12664 Added a call to _SST on wake to restore to "working" state.
12666 Check for End-Of-Buffer failure case in the WalkResources interface.
12668 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
12669 structures to the beginning of the file.
12671 After wake, clear GPE status register(s) before enabling GPEs.
12673 After wake, clear/enable power button. (Perhaps we should clear/enable
12675 fixed events upon wake.)
12677 Fixed a couple of possible memory leaks in the Namespace manager.
12679 Integrated latest acnetbsd.h file.
12681 ----------------------------------------
12682 11 February 2004. Summary of changes for version 20040211:
12685 1) ACPI CA Core Subsystem:
12687 Completed investigation and implementation of the call-by-reference
12688 mechanism for control method arguments.
12690 Fixed a problem where a store of an object into an indexed package could
12691 fail if the store occurs within a different method than the method that
12692 created the package.
12694 Fixed a problem where the ToDecimal operator could return incorrect
12697 Fixed a problem where the CopyObject operator could fail on some of the
12699 obscure objects (e.g., Reference objects.)
12701 Improved the output of the Debug object to display buffer, package, and
12704 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
12706 the expected result.
12708 Added permanent ACPI_REPORT_ERROR macros for all instances of the
12709 ACPI_AML_INTERNAL exception.
12711 Integrated latest version of acfreebsd.h
12713 ----------------------------------------
12714 16 January 2004. Summary of changes for version 20040116:
12716 The purpose of this release is primarily to update the copyright years in
12717 each module, thus causing a huge number of diffs. There are a few small
12718 functional changes, however.
12720 1) ACPI CA Core Subsystem:
12722 Improved error messages when there is a problem finding one or more of
12724 required base ACPI tables
12726 Reintroduced the definition of APIC_HEADER in actbl.h
12728 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
12730 Removed extraneous reference to NewObj in dsmthdat.c
12734 Fixed a problem introduced in December that disabled the correct
12736 of Resource Templates
12739 ----------------------------------------
12740 03 December 2003. Summary of changes for version 20031203:
12742 1) ACPI CA Core Subsystem:
12744 Changed the initialization of Operation Regions during subsystem
12745 init to perform two entire walks of the ACPI namespace; The first
12746 to initialize the regions themselves, the second to execute the
12747 _REG methods. This fixed some interdependencies across _REG
12748 methods found on some machines.
12750 Fixed a problem where a Store(Local0, Local1) could simply update
12751 the object reference count, and not create a new copy of the
12752 object if the Local1 is uninitialized.
12754 Implemented support for the _SST reserved method during sleep
12757 Implemented support to clear the SLP_TYP and SLP_EN bits when
12758 waking up, this is apparently required by some machines.
12760 When sleeping, clear the wake status only if SleepState is not S5.
12762 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
12763 pointer arithmetic advanced a string pointer too far.
12765 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
12766 could be returned if the requested table has not been loaded.
12768 Within the support for IRQ resources, restructured the handling of
12769 the active and edge/level bits.
12771 Fixed a few problems in AcpiPsxExecute() where memory could be
12772 leaked under certain error conditions.
12774 Improved error messages for the cases where the ACPI mode could
12777 Code and Data Size: Current and previous core subsystem library
12778 sizes are shown below. These are the code and data sizes for the
12779 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12780 these values do not include any ACPI driver or OSPM code. The
12781 debug version of the code includes the debug output trace
12782 mechanism and has a much larger code and data size. Note that
12783 these values will vary depending on the efficiency of the compiler
12784 and the compiler options used during generation.
12786 Previous Release (20031029):
12787 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12788 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12790 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12791 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12793 2) iASL Compiler/Disassembler:
12795 Implemented a fix for the iASL disassembler where a bad index was
12796 generated. This was most noticeable on 64-bit platforms
12799 ----------------------------------------
12800 29 October 2003. Summary of changes for version 20031029:
12802 1) ACPI CA Core Subsystem:
12805 Fixed a problem where a level-triggered GPE with an associated
12806 _Lxx control method was incorrectly cleared twice.
12808 Fixed a problem with the Field support code where an access can
12809 occur beyond the end-of-region if the field is non-aligned but
12810 extends to the very end of the parent region (resulted in an
12811 AE_AML_REGION_LIMIT exception.)
12813 Fixed a problem with ACPI Fixed Events where an RT Clock handler
12814 would not get invoked on an RTC event. The RTC event bitmasks for
12815 the PM1 registers were not being initialized properly.
12817 Implemented support for executing _STA and _INI methods for
12818 Processor objects. Although this is currently not part of the
12819 ACPI specification, there is existing ASL code that depends on the
12820 init-time execution of these methods.
12822 Implemented and deployed a GetDescriptorName function to decode
12823 the various types of internal descriptors. Guards against null
12824 descriptors during debug output also.
12826 Implemented and deployed a GetNodeName function to extract the 4-
12827 character namespace node name. This function simplifies the debug
12828 and error output, as well as guarding against null pointers during
12831 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
12832 simplify the debug and error output of 64-bit integers. This
12833 macro replaces the HIDWORD and LODWORD macros for dumping these
12836 Updated the implementation of the Stall() operator to only call
12837 AcpiOsStall(), and also return an error if the operand is larger
12838 than 255. This preserves the required behavior of not
12839 relinquishing the processor, as would happen if AcpiOsSleep() was
12840 called for "long stalls".
12842 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
12843 initialized are now treated as NOOPs.
12845 Cleaned up a handful of warnings during 64-bit generation.
12847 Fixed a reported error where and incorrect GPE number was passed
12848 to the GPE dispatch handler. This value is only used for error
12849 output, however. Used this opportunity to clean up and streamline
12850 the GPE dispatch code.
12852 Code and Data Size: Current and previous core subsystem library
12853 sizes are shown below. These are the code and data sizes for the
12854 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12855 these values do not include any ACPI driver or OSPM code. The
12857 debug version of the code includes the debug output trace
12858 mechanism and has a much larger code and data size. Note that
12859 these values will vary depending on the efficiency of the compiler
12860 and the compiler options used during generation.
12862 Previous Release (20031002):
12863 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12864 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12866 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12867 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12870 2) iASL Compiler/Disassembler:
12872 Updated the iASL compiler to return an error if the operand to the
12873 Stall() operator is larger than 255.
12876 ----------------------------------------
12877 02 October 2003. Summary of changes for version 20031002:
12880 1) ACPI CA Core Subsystem:
12882 Fixed a problem with Index Fields where the index was not
12883 incremented for fields that require multiple writes to the
12884 index/data registers (Fields that are wider than the data
12887 Fixed a problem with all Field objects where a write could go
12888 beyond the end-of-field if the field was larger than the access
12889 granularity and therefore required multiple writes to complete the
12890 request. An extra write beyond the end of the field could happen
12893 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
12894 would incorrectly be returned if the width of the Data Register
12895 was larger than the specified field access width.
12897 Completed fixes for LoadTable() and Unload() and verified their
12898 operation. Implemented full support for the "DdbHandle" object
12899 throughout the ACPI CA subsystem.
12901 Implemented full support for the MADT and ECDT tables in the ACPI
12902 CA header files. Even though these tables are not directly
12903 consumed by ACPI CA, the header definitions are useful for ACPI
12906 Integrated resource descriptor fixes posted to the Linux ACPI
12907 list. This included checks for minimum descriptor length, and
12908 support for trailing NULL strings within descriptors that have
12909 optional string elements.
12911 Code and Data Size: Current and previous core subsystem library
12912 sizes are shown below. These are the code and data sizes for the
12913 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12914 these values do not include any ACPI driver or OSPM code. The
12915 debug version of the code includes the debug output trace
12916 mechanism and has a much larger code and data size. Note that
12917 these values will vary depending on the efficiency of the compiler
12918 and the compiler options used during generation.
12920 Previous Release (20030918):
12921 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12922 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12924 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12925 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12930 Implemented detection of non-ASCII characters within the input
12931 source ASL file. This catches attempts to compile binary (AML)
12932 files early in the compile, with an informative error message.
12934 Fixed a problem where the disassembler would fault if the output
12935 filename could not be generated or if the output file could not be
12938 ----------------------------------------
12939 18 September 2003. Summary of changes for version 20030918:
12942 1) ACPI CA Core Subsystem:
12944 Found and fixed a longstanding problem with the late execution of
12945 the various deferred AML opcodes (such as Operation Regions,
12946 Buffer Fields, Buffers, and Packages). If the name string
12947 specified for the name of the new object placed the object in a
12948 scope other than the current scope, the initialization/execution
12949 of the opcode failed. The solution to this problem was to
12950 implement a mechanism where the late execution of such opcodes
12951 does not attempt to lookup/create the name a second time in an
12952 incorrect scope. This fixes the "region size computed
12953 incorrectly" problem.
12955 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
12956 Global Lock AE_BAD_PARAMETER error.
12958 Fixed several 64-bit issues with prototypes, casting and data
12961 Removed duplicate prototype from acdisasm.h
12963 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
12965 Code and Data Size: Current and previous core subsystem library
12966 sizes are shown below. These are the code and data sizes for the
12967 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12968 these values do not include any ACPI driver or OSPM code. The
12969 debug version of the code includes the debug output trace
12970 mechanism and has a much larger code and data size. Note that
12971 these values will vary depending on the efficiency of the compiler
12972 and the compiler options used during generation.
12976 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12977 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12979 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12980 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12985 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
12986 correct sleep time in seconds.
12988 ----------------------------------------
12989 14 July 2003. Summary of changes for version 20030619:
12991 1) ACPI CA Core Subsystem:
12993 Parse SSDTs in order discovered, as opposed to reverse order
12996 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13003 Dynamically allocate SDT list (suggested by Andi Kleen)
13005 proc function return value cleanups (Andi Kleen)
13007 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13009 Make it so acpismp=force works (reported by Andrew Morton)
13012 ----------------------------------------
13013 19 June 2003. Summary of changes for version 20030619:
13015 1) ACPI CA Core Subsystem:
13017 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13019 Do not acquire a semaphore in the S5 shutdown path.
13021 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13023 Fix sleep/stall code reversal. (Andi Kleen)
13025 Revert a change having to do with control method calling
13030 acpiphp update (Takayoshi Kochi)
13032 Export acpi_disabled for sonypi (Stelian Pop)
13034 Mention acpismp=force in config help
13036 Re-add acpitable.c and acpismp=force. This improves backwards
13038 compatibility and also cleans up the code to a significant degree.
13040 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13042 ----------------------------------------
13043 22 May 2003. Summary of changes for version 20030522:
13045 1) ACPI CA Core Subsystem:
13047 Found and fixed a reported problem where an AE_NOT_FOUND error
13048 occurred occasionally during _BST evaluation. This turned out to
13049 be an Owner ID allocation issue where a called method did not get
13050 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13051 ID UINT16 would wraparound so that the ID would be the same as the
13052 caller's and the called method would delete the caller's
13055 Implemented extended error reporting for control methods that are
13056 aborted due to a run-time exception. Output includes the exact
13057 AML instruction that caused the method abort, a dump of the method
13058 locals and arguments at the time of the abort, and a trace of all
13059 nested control method calls.
13061 Modified the interpreter to allow the creation of buffers of zero
13062 length from the AML code. Implemented new code to ensure that no
13063 attempt is made to actually allocate a memory buffer (of length
13064 zero) - instead, a simple buffer object with a NULL buffer pointer
13065 and length zero is created. A warning is no longer issued when
13066 the AML attempts to create a zero-length buffer.
13068 Implemented a workaround for the "leading asterisk issue" in
13069 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13070 asterisk is automatically removed if present in any HID, UID, or
13071 CID strings. The iASL compiler will still flag this asterisk as
13074 Implemented full support for _CID methods that return a package of
13075 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
13076 now additionally returns a device _CID list if present. This
13077 required a change to the external interface in order to pass an
13078 ACPI_BUFFER object as a parameter since the _CID list is of
13081 Fixed a problem with the new AE_SAME_HANDLER exception where
13082 handler initialization code did not know about this exception.
13084 Code and Data Size: Current and previous core subsystem library
13085 sizes are shown below. These are the code and data sizes for the
13086 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13087 these values do not include any ACPI driver or OSPM code. The
13088 debug version of the code includes the debug output trace
13089 mechanism and has a much larger code and data size. Note that
13090 these values will vary depending on the efficiency of the compiler
13091 and the compiler options used during generation.
13093 Previous Release (20030509):
13094 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13095 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13097 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13098 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13103 Fixed a bug in which we would reinitialize the ACPI interrupt
13104 after it was already working, thus disabling all ACPI and the IRQs
13105 for any other device sharing the interrupt. (Thanks to Stian
13108 Toshiba driver update (John Belmonte)
13110 Return only 0 or 1 for our interrupt handler status (Andrew
13116 Fixed a reported problem where multiple (nested) ElseIf()
13117 statements were not handled correctly by the compiler, resulting
13118 in incorrect warnings and incorrect AML code. This was a problem
13119 in both the ASL parser and the code generator.
13124 Added changes to existing interfaces, new exception codes, and new
13125 text concerning reference count object management versus garbage
13128 ----------------------------------------
13129 09 May 2003. Summary of changes for version 20030509.
13132 1) ACPI CA Core Subsystem:
13134 Changed the subsystem initialization sequence to hold off
13135 installation of address space handlers until the hardware has been
13136 initialized and the system has entered ACPI mode. This is because
13137 the installation of space handlers can cause _REG methods to be
13138 run. Previously, the _REG methods could potentially be run before
13139 ACPI mode was enabled.
13141 Fixed some memory leak issues related to address space handler and
13142 notify handler installation. There were some problems with the
13143 reference count mechanism caused by the fact that the handler
13144 objects are shared across several namespace objects.
13146 Fixed a reported problem where reference counts within the
13147 namespace were not properly updated when named objects created by
13148 method execution were deleted.
13150 Fixed a reported problem where multiple SSDTs caused a deletion
13151 issue during subsystem termination. Restructured the table data
13152 structures to simplify the linked lists and the related code.
13154 Fixed a problem where the table ID associated with secondary
13155 tables (SSDTs) was not being propagated into the namespace objects
13156 created by those tables. This would only present a problem for
13157 tables that are unloaded at run-time, however.
13159 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
13160 type as the length parameter (instead of UINT32).
13162 Solved a long-standing problem where an ALREADY_EXISTS error
13163 appears on various systems. This problem could happen when there
13164 are multiple PCI_Config operation regions under a single PCI root
13165 bus. This doesn't happen very frequently, but there are some
13166 systems that do this in the ASL.
13168 Fixed a reported problem where the internal DeleteNode function
13169 was incorrectly handling the case where a namespace node was the
13170 first in the parent's child list, and had additional peers (not
13171 the only child, but first in the list of children.)
13173 Code and Data Size: Current core subsystem library sizes are shown
13174 below. These are the code and data sizes for the acpica.lib
13175 produced by the Microsoft Visual C++ 6.0 compiler, and these
13176 values do not include any ACPI driver or OSPM code. The debug
13177 version of the code includes the debug output trace mechanism and
13178 has a much larger code and data size. Note that these values will
13179 vary depending on the efficiency of the compiler and the compiler
13180 options used during generation.
13183 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13184 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13186 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13187 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13192 Allow ":" in OS override string (Ducrot Bruno)
13194 Kobject fix (Greg KH)
13197 3 iASL Compiler/Disassembler:
13199 Fixed a problem in the generation of the C source code files (AML
13200 is emitted in C source statements for BIOS inclusion) where the
13201 Ascii dump that appears within a C comment at the end of each line
13202 could cause a compile time error if the AML sequence happens to
13203 have an open comment or close comment sequence embedded.
13206 ----------------------------------------
13207 24 April 2003. Summary of changes for version 20030424.
13210 1) ACPI CA Core Subsystem:
13212 Support for big-endian systems has been implemented. Most of the
13213 support has been invisibly added behind big-endian versions of the
13214 ACPI_MOVE_* macros.
13216 Fixed a problem in AcpiHwDisableGpeBlock() and
13217 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
13218 low level hardware write routine. The offset parameter was
13219 actually eliminated from the low level read/write routines because
13220 they had become obsolete.
13222 Fixed a problem where a handler object was deleted twice during
13223 the removal of a fixed event handler.
13228 A fix for SMP systems with link devices was contributed by
13232 (2.5) Return whether we handled the interrupt in our IRQ handler.
13233 (Linux ISRs no longer return void, so we can propagate the handler
13234 return value from the ACPI CA core back to the OS.)
13240 The ACPI CA Programmer Reference has been updated to reflect new
13241 interfaces and changes to existing interfaces.
13243 ----------------------------------------
13244 28 March 2003. Summary of changes for version 20030328.
13246 1) ACPI CA Core Subsystem:
13248 The GPE Block Device support has been completed. New interfaces
13249 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
13250 interfaces (enable, disable, clear, getstatus) have been split
13251 into separate interfaces for Fixed Events and General Purpose
13252 Events (GPEs) in order to support GPE Block Devices properly.
13254 Fixed a problem where the error message "Failed to acquire
13255 semaphore" would appear during operations on the embedded
13258 Code and Data Size: Current core subsystem library sizes are shown
13259 below. These are the code and data sizes for the acpica.lib
13260 produced by the Microsoft Visual C++ 6.0 compiler, and these
13261 values do not include any ACPI driver or OSPM code. The debug
13262 version of the code includes the debug output trace mechanism and
13263 has a much larger code and data size. Note that these values will
13264 vary depending on the efficiency of the compiler and the compiler
13265 options used during generation.
13268 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13269 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13271 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13272 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13275 ----------------------------------------
13276 28 February 2003. Summary of changes for version 20030228.
13279 1) ACPI CA Core Subsystem:
13281 The GPE handling and dispatch code has been completely overhauled
13282 in preparation for support of GPE Block Devices (ID ACPI0006).
13283 This affects internal data structures and code only; there should
13284 be no differences visible externally. One new file has been
13287 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
13288 fields that are used to determine the GPE block lengths. The
13289 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
13290 structures are ignored. This is per the ACPI specification but it
13291 isn't very clear. The full 256 Block 0/1 GPEs are now supported
13292 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
13294 In the SCI interrupt handler, removed the read of the PM1_CONTROL
13295 register to look at the SCI_EN bit. On some machines, this read
13296 causes an SMI event and greatly slows down SCI events. (This may
13297 in fact be the cause of slow battery status response on some
13300 Fixed a problem where a store of a NULL string to a package object
13301 could cause the premature deletion of the object. This was seen
13302 during execution of the battery _BIF method on some systems,
13303 resulting in no battery data being returned.
13305 Added AcpiWalkResources interface to simplify parsing of resource
13308 Code and Data Size: Current core subsystem library sizes are shown
13309 below. These are the code and data sizes for the acpica.lib
13310 produced by the Microsoft Visual C++ 6.0 compiler, and these
13311 values do not include any ACPI driver or OSPM code. The debug
13312 version of the code includes the debug output trace mechanism and
13313 has a much larger code and data size. Note that these values will
13314 vary depending on the efficiency of the compiler and the compiler
13315 options used during generation.
13318 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13319 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13321 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13322 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13327 S3 fixes (Ole Rohne)
13329 Update ACPI PHP driver with to use new acpi_walk_resource API
13332 Add S4BIOS support (Pavel Machek)
13334 Map in entire table before performing checksum (John Stultz)
13336 Expand the mem= cmdline to allow the specification of reserved and
13337 ACPI DATA blocks (Pavel Machek)
13339 Never use ACPI on VISWS
13341 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
13343 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
13344 causing us to think that some systems support C2 when they really
13347 Do not count processor objects for non-present CPUs (Thanks to
13353 Fixed a problem where ASL include files could not be found and
13356 Added support for the _PDC reserved name.
13359 ----------------------------------------
13360 22 January 2003. Summary of changes for version 20030122.
13363 1) ACPI CA Core Subsystem:
13365 Added a check for constructs of the form: Store (Local0, Local0)
13366 where Local0 is not initialized. Apparently, some BIOS
13367 programmers believe that this is a NOOP. Since this store doesn't
13368 do anything anyway, the new prototype behavior will ignore this
13369 error. This is a case where we can relax the strict checking in
13370 the interpreter in the name of compatibility.
13375 The AcpiSrc Source Conversion Utility has been released with the
13376 Linux package for the first time. This is the utility that is
13377 used to convert the ACPI CA base source code to the Linux version.
13379 (Both) Handle P_BLK lengths shorter than 6 more gracefully
13381 (Both) Move more headers to include/acpi, and delete an unused
13384 (Both) Move drivers/acpi/include directory to include/acpi
13386 (Both) Boot functions don't use cmdline, so don't pass it around
13388 (Both) Remove include of unused header (Adrian Bunk)
13390 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
13392 former now also includes the latter, acpiphp.h only needs the one,
13395 (2.5) Make it possible to select method of bios restoring after S3
13396 resume. [=> no more ugly ifdefs] (Pavel Machek)
13398 (2.5) Make proc write interfaces work (Pavel Machek)
13400 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
13402 (2.5) Break out ACPI Perf code into its own module, under cpufreq
13403 (Dominik Brodowski)
13405 (2.4) S4BIOS support (Ducrot Bruno)
13407 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
13413 Added support to disassemble SSDT and PSDTs.
13415 Implemented support to obtain SSDTs from the Windows registry if
13419 ----------------------------------------
13420 09 January 2003. Summary of changes for version 20030109.
13422 1) ACPI CA Core Subsystem:
13424 Changed the behavior of the internal Buffer-to-String conversion
13425 function. The current ACPI specification states that the contents
13426 of the buffer are "converted to a string of two-character
13427 hexadecimal numbers, each separated by a space". Unfortunately,
13428 this definition is not backwards compatible with existing ACPI 1.0
13429 implementations (although the behavior was not defined in the ACPI
13430 1.0 specification). The new behavior simply copies data from the
13431 buffer to the string until a null character is found or the end of
13432 the buffer is reached. The new String object is always null
13433 terminated. This problem was seen during the generation of _BIF
13434 battery data where incorrect strings were returned for battery
13435 type, etc. This will also require an errata to the ACPI
13438 Renamed all instances of NATIVE_UINT and NATIVE_INT to
13439 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
13441 Copyright in all module headers (both Linux and non-Linux) has be
13444 Code and Data Size: Current core subsystem library sizes are shown
13445 below. These are the code and data sizes for the acpica.lib
13446 produced by the Microsoft Visual C++ 6.0 compiler, and these
13447 values do not include any ACPI driver or OSPM code. The debug
13448 version of the code includes the debug output trace mechanism and
13449 has a much larger code and data size. Note that these values will
13450 vary depending on the efficiency of the compiler and the compiler
13451 options used during generation.
13454 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13455 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13457 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13458 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13463 Fixed an oops on module insertion/removal (Matthew Tippett)
13465 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
13467 (2.5) Replace pr_debug (Randy Dunlap)
13469 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
13471 (Both) Eliminate spawning of thread from timer callback, in favor
13474 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
13476 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
13478 (Both) Add missing statics to button.c (Pavel Machek)
13480 Several changes have been made to the source code translation
13481 utility that generates the Linux Code in order to make the code
13484 All typedefs on structs and unions have been removed in keeping
13485 with the Linux coding style.
13487 Removed the non-Linux SourceSafe module revision number from each
13490 Completed major overhaul of symbols to be lowercased for linux.
13491 Doubled the number of symbols that are lowercased.
13493 Fixed a problem where identifiers within procedure headers and
13494 within quotes were not fully lower cased (they were left with a
13497 Some C macros whose only purpose is to allow the generation of 16-
13498 bit code are now completely removed in the Linux code, increasing
13499 readability and maintainability.
13501 ----------------------------------------
13503 12 December 2002. Summary of changes for version 20021212.
13506 1) ACPI CA Core Subsystem:
13508 Fixed a problem where the creation of a zero-length AML Buffer
13509 would cause a fault.
13511 Fixed a problem where a Buffer object that pointed to a static AML
13512 buffer (in an ACPI table) could inadvertently be deleted, causing
13515 Fixed a problem where a user buffer (passed in to the external
13516 ACPI CA interfaces) could be overwritten if the buffer was too
13517 small to complete the operation, causing memory corruption.
13519 Fixed a problem in the Buffer-to-String conversion code where a
13520 string of length one was always returned, regardless of the size
13521 of the input Buffer object.
13523 Removed the NATIVE_CHAR data type across the entire source due to
13524 lack of need and lack of consistent use.
13526 Code and Data Size: Current core subsystem library sizes are shown
13527 below. These are the code and data sizes for the acpica.lib
13528 produced by the Microsoft Visual C++ 6.0 compiler, and these
13529 values do not include any ACPI driver or OSPM code. The debug
13530 version of the code includes the debug output trace mechanism and
13531 has a much larger code and data size. Note that these values will
13532 vary depending on the efficiency of the compiler and the compiler
13533 options used during generation.
13536 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13537 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13539 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13540 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13543 ----------------------------------------
13544 05 December 2002. Summary of changes for version 20021205.
13546 1) ACPI CA Core Subsystem:
13548 Fixed a problem where a store to a String or Buffer object could
13549 cause corruption of the DSDT if the object type being stored was
13550 the same as the target object type and the length of the object
13551 being stored was equal to or smaller than the original (existing)
13552 target object. This was seen to cause corruption of battery _BIF
13553 buffers if the _BIF method modified the buffer on the fly.
13555 Fixed a problem where an internal error was generated if a control
13556 method invocation was used in an OperationRegion, Buffer, or
13557 Package declaration. This was caused by the deferred parsing of
13558 the control method and thus the deferred creation of the internal
13559 method object. The solution to this problem was to create the
13560 internal method object at the moment the method is encountered in
13561 the first pass - so that subsequent references to the method will
13562 able to obtain the required parameter count and thus properly
13563 parse the method invocation. This problem presented itself as an
13564 AE_AML_INTERNAL during the pass 1 parse phase during table load.
13566 Fixed a problem where the internal String object copy routine did
13567 not always allocate sufficient memory for the target String object
13568 and caused memory corruption. This problem was seen to cause
13569 "Allocation already present in list!" errors as memory allocation
13572 Implemented a new function for the evaluation of namespace objects
13573 that allows the specification of the allowable return object
13574 types. This simplifies a lot of code that checks for a return
13575 object of one or more specific objects returned from the
13576 evaluation (such as _STA, etc.) This may become and external
13577 function if it would be useful to ACPI-related drivers.
13579 Completed another round of prefixing #defines with "ACPI_" for
13582 Completed additional code restructuring to allow more modular
13583 linking for iASL compiler and AcpiExec. Several files were split
13584 creating new files. New files: nsparse.c dsinit.c evgpe.c
13586 Implemented an abort mechanism to terminate an executing control
13587 method via the AML debugger. This feature is useful for debugging
13588 control methods that depend (wait) for specific hardware
13591 Code and Data Size: Current core subsystem library sizes are shown
13592 below. These are the code and data sizes for the acpica.lib
13593 produced by the Microsoft Visual C++ 6.0 compiler, and these
13594 values do not include any ACPI driver or OSPM code. The debug
13595 version of the code includes the debug output trace mechanism and
13596 has a much larger code and data size. Note that these values will
13597 vary depending on the efficiency of the compiler and the compiler
13598 options used during generation.
13601 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13602 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13604 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13605 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13608 2) iASL Compiler/Disassembler
13610 Fixed a compiler code generation problem for "Interrupt" Resource
13611 Descriptors. If specified in the ASL, the optional "Resource
13612 Source Index" and "Resource Source" fields were not inserted into
13613 the correct location within the AML resource descriptor, creating
13614 an invalid descriptor.
13616 Fixed a disassembler problem for "Interrupt" resource descriptors.
13617 The optional "Resource Source Index" and "Resource Source" fields
13621 ----------------------------------------
13622 22 November 2002. Summary of changes for version 20021122.
13625 1) ACPI CA Core Subsystem:
13627 Fixed a reported problem where an object stored to a Method Local
13628 or Arg was not copied to a new object during the store - the
13629 object pointer was simply copied to the Local/Arg. This caused
13630 all subsequent operations on the Local/Arg to also affect the
13631 original source of the store operation.
13633 Fixed a problem where a store operation to a Method Local or Arg
13634 was not completed properly if the Local/Arg contained a reference
13635 (from RefOf) to a named field. The general-purpose store-to-
13636 namespace-node code is now used so that this case is handled
13639 Fixed a problem where the internal object copy routine would cause
13640 a protection fault if the object being copied was a Package and
13641 contained either 1) a NULL package element or 2) a nested sub-
13644 Fixed a problem with the GPE initialization that resulted from an
13645 ambiguity in the ACPI specification. One section of the
13646 specification states that both the address and length of the GPE
13647 block must be zero if the block is not supported. Another section
13648 implies that only the address need be zero if the block is not
13649 supported. The code has been changed so that both the address and
13650 the length must be non-zero to indicate a valid GPE block (i.e.,
13651 if either the address or the length is zero, the GPE block is
13654 Code and Data Size: Current core subsystem library sizes are shown
13655 below. These are the code and data sizes for the acpica.lib
13656 produced by the Microsoft Visual C++ 6.0 compiler, and these
13657 values do not include any ACPI driver or OSPM code. The debug
13658 version of the code includes the debug output trace mechanism and
13659 has a much larger code and data size. Note that these values will
13660 vary depending on the efficiency of the compiler and the compiler
13661 options used during generation.
13664 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13665 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13667 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13668 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13673 Cleaned up EC driver. Exported an external EC read/write
13674 interface. By going through this, other drivers (most notably
13675 sonypi) will be able to serialize access to the EC.
13678 3) iASL Compiler/Disassembler
13680 Implemented support to optionally generate include files for both
13681 ASM and C (the -i switch). This simplifies BIOS development by
13682 automatically creating include files that contain external
13683 declarations for the symbols that are created within the
13685 (optionally generated) ASM and C AML source files.
13688 ----------------------------------------
13689 15 November 2002. Summary of changes for version 20021115.
13691 1) ACPI CA Core Subsystem:
13693 Fixed a memory leak problem where an error during resolution of
13695 method arguments during a method invocation from another method
13696 failed to cleanup properly by deleting all successfully resolved
13699 Fixed a problem where the target of the Index() operator was not
13700 correctly constructed if the source object was a package. This
13701 problem has not been detected because the use of a target operand
13702 with Index() is very rare.
13704 Fixed a problem with the Index() operator where an attempt was
13705 made to delete the operand objects twice.
13707 Fixed a problem where an attempt was made to delete an operand
13708 twice during execution of the CondRefOf() operator if the target
13711 Implemented the first of perhaps several internal create object
13712 functions that create and initialize a specific object type. This
13713 consolidates duplicated code wherever the object is created, thus
13714 shrinking the size of the subsystem.
13716 Implemented improved debug/error messages for errors that occur
13717 during nested method invocations. All executing method pathnames
13718 are displayed (with the error) as the call stack is unwound - thus
13721 Fixed a problem introduced in the 10/02 release that caused
13722 premature deletion of a buffer object if a buffer was used as an
13723 ASL operand where an integer operand is required (Thus causing an
13724 implicit object conversion from Buffer to Integer.) The change in
13725 the 10/02 release was attempting to fix a memory leak (albeit
13728 Code and Data Size: Current core subsystem library sizes are shown
13729 below. These are the code and data sizes for the acpica.lib
13730 produced by the Microsoft Visual C++ 6.0 compiler, and these
13731 values do not include any ACPI driver or OSPM code. The debug
13732 version of the code includes the debug output trace mechanism and
13733 has a much larger code and data size. Note that these values will
13734 vary depending on the efficiency of the compiler and the compiler
13735 options used during generation.
13738 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13739 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13741 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13742 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13747 Changed the implementation of the ACPI semaphores to use down()
13748 instead of down_interruptable(). It is important that the
13749 execution of ACPI control methods not be interrupted by signals.
13750 Methods must run to completion, or the system may be left in an
13751 unknown/unstable state.
13753 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
13757 3) iASL Compiler/Disassembler
13760 Changed the default location of output files. All output files
13761 are now placed in the current directory by default instead of in
13762 the directory of the source file. This change may affect some
13763 existing makefiles, but it brings the behavior of the compiler in
13764 line with other similar tools. The location of the output files
13765 can be overridden with the -p command line switch.
13768 ----------------------------------------
13769 11 November 2002. Summary of changes for version 20021111.
13772 0) ACPI Specification 2.0B is released and is now available at:
13773 http://www.acpi.info/index.html
13776 1) ACPI CA Core Subsystem:
13778 Implemented support for the ACPI 2.0 SMBus Operation Regions.
13779 This includes the early detection and handoff of the request to
13780 the SMBus region handler (avoiding all of the complex field
13781 support code), and support for the bidirectional return packet
13782 from an SMBus write operation. This paves the way for the
13783 development of SMBus drivers in each host operating system.
13785 Fixed a problem where the semaphore WAIT_FOREVER constant was
13786 defined as 32 bits, but must be 16 bits according to the ACPI
13787 specification. This had the side effect of causing ASL
13788 Mutex/Event timeouts even though the ASL code requested a wait
13789 forever. Changed all internal references to the ACPI timeout
13790 parameter to 16 bits to prevent future problems. Changed the name
13791 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
13793 Code and Data Size: Current core subsystem library sizes are shown
13794 below. These are the code and data sizes for the acpica.lib
13795 produced by the Microsoft Visual C++ 6.0 compiler, and these
13796 values do not include any ACPI driver or OSPM code. The debug
13797 version of the code includes the debug output trace mechanism and
13798 has a much larger code and data size. Note that these values will
13799 vary depending on the efficiency of the compiler and the compiler
13800 options used during generation.
13803 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13804 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13806 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13807 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13812 Module loading/unloading fixes (John Cagle)
13815 3) iASL Compiler/Disassembler
13817 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
13819 Implemented support for the disassembly of all SMBus protocol
13820 keywords (SMBQuick, SMBWord, etc.)
13822 ----------------------------------------
13823 01 November 2002. Summary of changes for version 20021101.
13826 1) ACPI CA Core Subsystem:
13828 Fixed a problem where platforms that have a GPE1 block but no GPE0
13829 block were not handled correctly. This resulted in a "GPE
13830 overlap" error message. GPE0 is no longer required.
13832 Removed code added in the previous release that inserted nodes
13833 into the namespace in alphabetical order. This caused some side-
13834 effects on various machines. The root cause of the problem is
13835 still under investigation since in theory, the internal ordering
13836 of the namespace nodes should not matter.
13839 Enhanced error reporting for the case where a named object is not
13840 found during control method execution. The full ACPI namepath
13841 (name reference) of the object that was not found is displayed in
13844 Note: as a result of the overhaul of the namespace object types in
13845 the previous release, the namespace nodes for the predefined
13846 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
13847 instead of ACPI_TYPE_ANY. This simplifies the namespace
13848 management code but may affect code that walks the namespace tree
13849 looking for specific object types.
13851 Code and Data Size: Current core subsystem library sizes are shown
13852 below. These are the code and data sizes for the acpica.lib
13853 produced by the Microsoft Visual C++ 6.0 compiler, and these
13854 values do not include any ACPI driver or OSPM code. The debug
13855 version of the code includes the debug output trace mechanism and
13856 has a much larger code and data size. Note that these values will
13857 vary depending on the efficiency of the compiler and the compiler
13858 options used during generation.
13861 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13862 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13864 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13865 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13870 Fixed a problem introduced in the previous release where the
13871 Processor and Thermal objects were not recognized and installed in
13872 /proc. This was related to the scope type change described above.
13875 3) iASL Compiler/Disassembler
13877 Implemented the -g option to get all of the required ACPI tables
13878 from the registry and save them to files (Windows version of the
13879 compiler only.) The required tables are the FADT, FACS, and DSDT.
13881 Added ACPI table checksum validation during table disassembly in
13882 order to catch corrupted tables.
13885 ----------------------------------------
13886 22 October 2002. Summary of changes for version 20021022.
13888 1) ACPI CA Core Subsystem:
13890 Implemented a restriction on the Scope operator that the target
13891 must already exist in the namespace at the time the operator is
13892 encountered (during table load or method execution). In other
13893 words, forward references are not allowed and Scope() cannot
13894 create a new object. This changes the previous behavior where the
13895 interpreter would create the name if not found. This new behavior
13896 correctly enables the search-to-root algorithm during namespace
13897 lookup of the target name. Because of this upsearch, this fixes
13898 the known Compaq _SB_.OKEC problem and makes both the AML
13899 interpreter and iASL compiler compatible with other ACPI
13902 Completed a major overhaul of the internal ACPI object types for
13903 the ACPI Namespace and the associated operand objects. Many of
13904 these types had become obsolete with the introduction of the two-
13905 pass namespace load. This cleanup simplifies the code and makes
13906 the entire namespace load mechanism much clearer and easier to
13909 Improved debug output for tracking scope opening/closing to help
13910 diagnose scoping issues. The old scope name as well as the new
13911 scope name are displayed. Also improved error messages for
13912 problems with ASL Mutex objects and error messages for GPE
13915 Cleaned up the namespace dump code, removed obsolete code.
13917 All string output (for all namespace/object dumps) now uses the
13918 common ACPI string output procedure which handles escapes properly
13919 and does not emit non-printable characters.
13921 Fixed some issues with constants in the 64-bit version of the
13922 local C library (utclib.c)
13927 EC Driver: No longer attempts to acquire the Global Lock at
13931 3) iASL Compiler/Disassembler
13933 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
13934 2 opcodes outside of a control method. This means that the
13935 "executable" operators (versus the "namespace" operators) cannot
13936 be used at the table level; they can only be used within a control
13939 Implemented the restriction on the Scope() operator where the
13940 target must already exist in the namespace at the time the
13941 operator is encountered (during ASL compilation). In other words,
13942 forward references are not allowed and Scope() cannot create a new
13943 object. This makes the iASL compiler compatible with other ACPI
13944 implementations and makes the Scope() implementation adhere to the
13945 ACPI specification.
13947 Fixed a problem where namepath optimization for the Alias operator
13948 was optimizing the wrong path (of the two namepaths.) This caused
13949 a "Missing alias link" error message.
13951 Fixed a problem where an "unknown reserved name" warning could be
13952 incorrectly generated for names like "_SB" when the trailing
13953 underscore is not used in the original ASL.
13955 Fixed a problem where the reserved name check did not handle
13956 NamePaths with multiple NameSegs correctly. The first nameseg of
13957 the NamePath was examined instead of the last NameSeg.
13960 ----------------------------------------
13962 02 October 2002. Summary of changes for this release.
13965 1) ACPI CA Core Subsystem version 20021002:
13967 Fixed a problem where a store/copy of a string to an existing
13968 string did not always set the string length properly in the String
13971 Fixed a reported problem with the ToString operator where the
13972 behavior was identical to the ToHexString operator instead of just
13973 simply converting a raw buffer to a string data type.
13975 Fixed a problem where CopyObject and the other "explicit"
13976 conversion operators were not updating the internal namespace node
13977 type as part of the store operation.
13979 Fixed a memory leak during implicit source operand conversion
13980 where the original object was not deleted if it was converted to a
13981 new object of a different type.
13983 Enhanced error messages for all problems associated with namespace
13984 lookups. Common procedure generates and prints the lookup name as
13985 well as the formatted status.
13987 Completed implementation of a new design for the Alias support
13988 within the namespace. The existing design did not handle the case
13989 where a new object was assigned to one of the two names due to the
13990 use of an explicit conversion operator, resulting in the two names
13991 pointing to two different objects. The new design simply points
13992 the Alias name to the original name node - not to the object.
13993 This results in a level of indirection that must be handled in the
13994 name resolution mechanism.
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 larger code and data size. Note that these values will vary
14002 depending on the efficiency of the compiler and the compiler
14003 options used during generation.
14006 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14007 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14009 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14010 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14015 Initialize thermal driver's timer before it is used. (Knut
14018 Allow handling negative celsius values. (Kochi Takayoshi)
14020 Fix thermal management and make trip points. R/W (Pavel Machek)
14022 Fix /proc/acpi/sleep. (P. Christeas)
14024 IA64 fixes. (David Mosberger)
14026 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14028 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14032 3) iASL Compiler/Disassembler
14034 Clarified some warning/error messages.
14037 ----------------------------------------
14038 18 September 2002. Summary of changes for this release.
14041 1) ACPI CA Core Subsystem version 20020918:
14043 Fixed a reported problem with reference chaining (via the Index()
14044 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14045 The definition of these operators includes the dereferencing of
14046 all chained references to return information on the base object.
14048 Fixed a problem with stores to indexed package elements - the
14049 existing code would not complete the store if an "implicit
14050 conversion" was not performed. In other words, if the existing
14051 object (package element) was to be replaced completely, the code
14052 didn't handle this case.
14054 Relaxed typechecking on the ASL "Scope" operator to allow the
14055 target name to refer to an object of type Integer, String, or
14056 Buffer, in addition to the scoping object types (Device,
14057 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14058 This allows existing AML code that has workarounds for a bug in
14059 Windows to function properly. A warning is issued, however. This
14060 affects both the AML interpreter and the iASL compiler. Below is
14061 an example of this type of ASL code:
14067 Fixed some reported problems with 64-bit integer support in the
14068 local implementation of C library functions (clib.c)
14073 Use ACPI fix map region instead of IOAPIC region, since it is
14074 undefined in non-SMP.
14076 Ensure that the SCI has the proper polarity and trigger, even on
14077 systems that do not have an interrupt override entry in the MADT.
14079 2.5 big driver reorganization (Pat Mochel)
14081 Use early table mapping code from acpitable.c (Andi Kleen)
14083 New blacklist entries (Andi Kleen)
14085 Blacklist improvements. Split blacklist code out into a separate
14086 file. Move checking the blacklist to very early. Previously, we
14087 would use ACPI tables, and then halfway through init, check the
14088 blacklist -- too late. Now, it's early enough to completely fall-
14092 3) iASL Compiler/Disassembler version 20020918:
14094 Fixed a problem where the typechecking code didn't know that an
14095 alias could point to a method. In other words, aliases were not
14096 being dereferenced during typechecking.
14099 ----------------------------------------
14100 29 August 2002. Summary of changes for this release.
14102 1) ACPI CA Core Subsystem Version 20020829:
14104 If the target of a Scope() operator already exists, it must be an
14105 object type that actually opens a scope -- such as a Device,
14106 Method, Scope, etc. This is a fatal runtime error. Similar error
14107 check has been added to the iASL compiler also.
14109 Tightened up the namespace load to disallow multiple names in the
14110 same scope. This previously was allowed if both objects were of
14111 the same type. (i.e., a lookup was the same as entering a new
14117 Ensure that the ACPI interrupt has the proper trigger and
14120 local_irq_disable is extraneous. (Matthew Wilcox)
14122 Make "acpi=off" actually do what it says, and not use the ACPI
14123 interpreter *or* the tables.
14125 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
14129 3) iASL Compiler/Disassembler Version 20020829:
14131 Implemented namepath optimization for name declarations. For
14132 example, a declaration like "Method (\_SB_.ABCD)" would get
14133 optimized to "Method (ABCD)" if the declaration is within the
14134 \_SB_ scope. This optimization is in addition to the named
14135 reference path optimization first released in the previous
14136 version. This would seem to complete all possible optimizations
14137 for namepaths within the ASL/AML.
14139 If the target of a Scope() operator already exists, it must be an
14140 object type that actually opens a scope -- such as a Device,
14141 Method, Scope, etc.
14143 Implemented a check and warning for unreachable code in the same
14144 block below a Return() statement.
14146 Fixed a problem where the listing file was not generated if the
14147 compiler aborted if the maximum error count was exceeded (200).
14149 Fixed a problem where the typechecking of method return values was
14150 broken. This includes the check for a return value when the
14151 method is invoked as a TermArg (a return value is expected.)
14153 Fixed a reported problem where EOF conditions during a quoted
14154 string or comment caused a fault.
14157 ----------------------------------------
14158 15 August 2002. Summary of changes for this release.
14160 1) ACPI CA Core Subsystem Version 20020815:
14162 Fixed a reported problem where a Store to a method argument that
14163 contains a reference did not perform the indirect store correctly.
14164 This problem was created during the conversion to the new
14165 reference object model - the indirect store to a method argument
14166 code was not updated to reflect the new model.
14168 Reworked the ACPI mode change code to better conform to ACPI 2.0,
14169 handle corner cases, and improve code legibility (Kochi Takayoshi)
14171 Fixed a problem with the pathname parsing for the carat (^)
14172 prefix. The heavy use of the carat operator by the new namepath
14173 optimization in the iASL compiler uncovered a problem with the AML
14174 interpreter handling of this prefix. In the case where one or
14175 more carats precede a single nameseg, the nameseg was treated as
14176 standalone and the search rule (to root) was inadvertently
14177 applied. This could cause both the iASL compiler and the
14178 interpreter to find the wrong object or to miss the error that
14179 should occur if the object does not exist at that exact pathname.
14181 Found and fixed the problem where the HP Pavilion DSDT would not
14182 load. This was a relatively minor tweak to the table loading code
14183 (a problem caused by the unexpected encounter with a method
14184 invocation not within a control method), but it does not solve the
14185 overall issue of the execution of AML code at the table level.
14186 This investigation is still ongoing.
14188 Code and Data Size: Current core subsystem library sizes are shown
14189 below. These are the code and data sizes for the acpica.lib
14190 produced by the Microsoft Visual C++ 6.0 compiler, and these
14191 values do not include any ACPI driver or OSPM code. The debug
14192 version of the code includes the debug output trace mechanism and
14193 has a larger code and data size. Note that these values will vary
14194 depending on the efficiency of the compiler and the compiler
14195 options used during generation.
14198 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14199 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14201 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14202 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14207 Remove redundant slab.h include (Brad Hards)
14209 Fix several bugs in thermal.c (Herbert Nachtnebel)
14211 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
14213 Change acpi_system_suspend to use updated irq functions (Pavel
14216 Export acpi_get_firmware_table (Matthew Wilcox)
14218 Use proper root proc entry for ACPI (Kochi Takayoshi)
14220 Fix early-boot table parsing (Bjorn Helgaas)
14223 3) iASL Compiler/Disassembler
14225 Reworked the compiler options to make them more consistent and to
14226 use two-letter options where appropriate. We were running out of
14227 sensible letters. This may break some makefiles, so check the
14228 current options list by invoking the compiler with no parameters.
14230 Completed the design and implementation of the ASL namepath
14231 optimization option for the compiler. This option optimizes all
14232 references to named objects to the shortest possible path. The
14233 first attempt tries to utilize a single nameseg (4 characters) and
14234 the "search-to-root" algorithm used by the interpreter. If that
14235 cannot be used (because either the name is not in the search path
14236 or there is a conflict with another object with the same name),
14237 the pathname is optimized using the carat prefix (usually a
14238 shorter string than specifying the entire path from the root.)
14240 Implemented support to obtain the DSDT from the Windows registry
14241 (when the disassembly option is specified with no input file).
14242 Added this code as the implementation for AcpiOsTableOverride in
14243 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
14244 utility) to scan memory for the DSDT to the AcpiOsTableOverride
14245 function in the DOS OSL to make the disassembler truly OS
14248 Implemented a new option to disassemble and compile in one step.
14249 When used without an input filename, this option will grab the
14250 DSDT from the local machine, disassemble it, and compile it in one
14253 Added a warning message for invalid escapes (a backslash followed
14254 by any character other than the allowable escapes). This catches
14255 the quoted string error "\_SB_" (which should be "\\_SB_" ).
14257 Also, there are numerous instances in the ACPI specification where
14260 Added a compiler option to disable all optimizations. This is
14261 basically the "compatibility mode" because by using this option,
14262 the AML code will come out exactly the same as other ASL
14265 Added error messages for incorrectly ordered dependent resource
14266 functions. This includes: missing EndDependentFn macro at end of
14267 dependent resource list, nested dependent function macros (both
14268 start and end), and missing StartDependentFn macro. These are
14269 common errors that should be caught at compile time.
14271 Implemented _OSI support for the disassembler and compiler. _OSI
14272 must be included in the namespace for proper disassembly (because
14273 the disassembler must know the number of arguments.)
14275 Added an "optimization" message type that is optional (off by
14276 default). This message is used for all optimizations - including
14277 constant folding, integer optimization, and namepath optimization.
14279 ----------------------------------------
14280 25 July 2002. Summary of changes for this release.
14283 1) ACPI CA Core Subsystem Version 20020725:
14285 The AML Disassembler has been enhanced to produce compilable ASL
14286 code and has been integrated into the iASL compiler (see below) as
14287 well as the single-step disassembly for the AML debugger and the
14288 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
14289 resource templates and macros are fully supported. The
14290 disassembler has been tested on over 30 different AML files,
14291 producing identical AML when the resulting disassembled ASL file
14292 is recompiled with the same ASL compiler.
14294 Modified the Resource Manager to allow zero interrupts and zero
14295 dma channels during the GetCurrentResources call. This was
14296 causing problems on some platforms.
14298 Added the AcpiOsRedirectOutput interface to the OSL to simplify
14299 output redirection for the AcpiOsPrintf and AcpiOsVprintf
14302 Code and Data Size: Current core subsystem library sizes are shown
14303 below. These are the code and data sizes for the acpica.lib
14304 produced by the Microsoft Visual C++ 6.0 compiler, and these
14305 values do not include any ACPI driver or OSPM code. The debug
14306 version of the code includes the debug output trace mechanism and
14307 has a larger code and data size. Note that these values will vary
14308 depending on the efficiency of the compiler and the compiler
14309 options used during generation.
14312 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14313 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14315 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14316 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14321 Fixed a panic in the EC driver (Dominik Brodowski)
14323 Implemented checksum of the R/XSDT itself during Linux table scan
14329 The AML disassembler is integrated into the compiler. The "-d"
14330 option invokes the disassembler to completely disassemble an
14331 input AML file, producing as output a text ASL file with the
14332 extension ".dsl" (to avoid name collisions with existing .asl
14333 source files.) A future enhancement will allow the disassembler
14334 to obtain the BIOS DSDT from the registry under Windows.
14336 Fixed a problem with the VendorShort and VendorLong resource
14337 descriptors where an invalid AML sequence was created.
14339 Implemented a fix for BufferData term in the ASL parser. It was
14340 inadvertently defined twice, allowing invalid syntax to pass and
14341 causing reduction conflicts.
14343 Fixed a problem where the Ones opcode could get converted to a
14344 value of zero if "Ones" was used where a byte, word or dword value
14345 was expected. The 64-bit value is now truncated to the correct
14346 size with the correct value.
14350 ----------------------------------------
14351 02 July 2002. Summary of changes for this release.
14354 1) ACPI CA Core Subsystem Version 20020702:
14356 The Table Manager code has been restructured to add several new
14357 features. Tables that are not required by the core subsystem
14358 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
14359 validated in any way and are returned from AcpiGetFirmwareTable if
14360 requested. The AcpiOsTableOverride interface is now called for
14361 each table that is loaded by the subsystem in order to allow the
14362 host to override any table it chooses. Previously, only the DSDT
14363 could be overridden. Added one new files, tbrsdt.c and
14366 Fixed a problem with the conversion of internal package objects to
14367 external objects (when a package is returned from a control
14368 method.) The return buffer length was set to zero instead of the
14369 proper length of the package object.
14371 Fixed a reported problem with the use of the RefOf and DeRefOf
14372 operators when passing reference arguments to control methods. A
14373 new type of Reference object is used internally for references
14374 produced by the RefOf operator.
14376 Added additional error messages in the Resource Manager to explain
14377 AE_BAD_DATA errors when they occur during resource parsing.
14379 Split the AcpiEnableSubsystem into two primitives to enable a
14380 finer granularity initialization sequence. These two calls should
14381 be called in this order: AcpiEnableSubsystem (flags),
14382 AcpiInitializeObjects (flags). The flags parameter remains the
14388 Updated the ACPI utilities module to understand the new style of
14389 fully resolved package objects that are now returned from the core
14390 subsystem. This eliminates errors of the form:
14392 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
14393 acpi_utils-0430 [145] acpi_evaluate_reference:
14394 Invalid element in package (not a device reference)
14396 The method evaluation utility uses the new buffer allocation
14397 scheme instead of calling AcpiEvaluate Object twice.
14399 Added support for ECDT. This allows the use of the Embedded
14401 Controller before the namespace has been fully initialized, which
14402 is necessary for ACPI 2.0 support, and for some laptops to
14403 initialize properly. (Laptops using ECDT are still rare, so only
14404 limited testing was performed of the added functionality.)
14406 Fixed memory leaks in the EC driver.
14408 Eliminated a brittle code structure in acpi_bus_init().
14410 Eliminated the acpi_evaluate() helper function in utils.c. It is
14411 no longer needed since acpi_evaluate_object can optionally
14412 allocate memory for the return object.
14414 Implemented fix for keyboard hang when getting battery readings on
14415 some systems (Stephen White)
14417 PCI IRQ routing update (Dominik Brodowski)
14419 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
14422 ----------------------------------------
14423 11 June 2002. Summary of changes for this release.
14426 1) ACPI CA Core Subsystem Version 20020611:
14428 Fixed a reported problem where constants such as Zero and One
14429 appearing within _PRT packages were not handled correctly within
14430 the resource manager code. Originally reported against the ASL
14431 compiler because the code generator now optimizes integers to
14432 their minimal AML representation (i.e. AML constants if possible.)
14433 The _PRT code now handles all AML constant opcodes correctly
14434 (Zero, One, Ones, Revision).
14436 Fixed a problem with the Concatenate operator in the AML
14437 interpreter where a buffer result object was incorrectly marked as
14438 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
14440 All package sub-objects are now fully resolved before they are
14441 returned from the external ACPI interfaces. This means that name
14442 strings are resolved to object handles, and constant operators
14443 (Zero, One, Ones, Revision) are resolved to Integers.
14445 Implemented immediate resolution of the AML Constant opcodes
14446 (Zero, One, Ones, Revision) to Integer objects upon detection
14447 within the AML stream. This has simplified and reduced the
14448 generated code size of the subsystem by eliminating about 10
14449 switch statements for these constants (which previously were
14450 contained in Reference objects.) The complicating issues are that
14451 the Zero opcode is used as a "placeholder" for unspecified
14452 optional target operands and stores to constants are defined to be
14455 Code and Data Size: Current core subsystem library sizes are shown
14456 below. These are the code and data sizes for the acpica.lib
14457 produced by the Microsoft Visual C++ 6.0 compiler, and these
14458 values do not include any ACPI driver or OSPM code. The debug
14459 version of the code includes the debug output trace mechanism and
14460 has a larger code and data size. Note that these values will vary
14461 depending on the efficiency of the compiler and the compiler
14462 options used during generation.
14465 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14466 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14468 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14469 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14475 Added preliminary support for obtaining _TRA data for PCI root
14476 bridges (Bjorn Helgaas).
14479 3) iASL Compiler Version X2046:
14481 Fixed a problem where the "_DDN" reserved name was defined to be a
14482 control method with one argument. There are no arguments, and
14483 _DDN does not have to be a control method.
14485 Fixed a problem with the Linux version of the compiler where the
14486 source lines printed with error messages were the wrong lines.
14487 This turned out to be the "LF versus CR/LF" difference between
14488 Windows and Unix. This appears to be the longstanding issue
14489 concerning listing output and error messages.
14491 Fixed a problem with the Linux version of compiler where opcode
14492 names within error messages were wrong. This was caused by a
14493 slight difference in the output of the Flex tool on Linux versus
14496 Fixed a problem with the Linux compiler where the hex output files
14497 contained some garbage data caused by an internal buffer overrun.
14500 ----------------------------------------
14501 17 May 2002. Summary of changes for this release.
14504 1) ACPI CA Core Subsystem Version 20020517:
14506 Implemented a workaround to an BIOS bug discovered on the HP
14507 OmniBook where the FADT revision number and the table size are
14508 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
14509 behavior is to fallback to using only the ACPI 1.0 fields of the
14510 FADT if the table is too small to be a ACPI 2.0 table as claimed
14511 by the revision number. Although this is a BIOS bug, this is a
14512 case where the workaround is simple enough and with no side
14513 effects, so it seemed prudent to add it. A warning message is
14516 Implemented minimum size checks for the fixed-length ACPI tables -
14517 - the FADT and FACS, as well as consistency checks between the
14518 revision number and the table size.
14520 Fixed a reported problem in the table override support where the
14521 new table pointer was incorrectly treated as a physical address
14522 instead of a logical address.
14524 Eliminated the use of the AE_AML_ERROR exception and replaced it
14525 with more descriptive codes.
14527 Fixed a problem where an exception would occur if an ASL Field was
14528 defined with no named Field Units underneath it (used by some
14531 Code and Data Size: Current core subsystem library sizes are shown
14532 below. These are the code and data sizes for the acpica.lib
14533 produced by the Microsoft Visual C++ 6.0 compiler, and these
14534 values do not include any ACPI driver or OSPM code. The debug
14535 version of the code includes the debug output trace mechanism and
14536 has a larger code and data size. Note that these values will vary
14537 depending on the efficiency of the compiler and the compiler
14538 options used during generation.
14541 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14542 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14544 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14545 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14551 Much work done on ACPI init (MADT and PCI IRQ routing support).
14552 (Paul D. and Dominik Brodowski)
14554 Fix PCI IRQ-related panic on boot (Sam Revitch)
14556 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
14558 Fix "MHz" typo (Dominik Brodowski)
14560 Fix RTC year 2000 issue (Dominik Brodowski)
14562 Preclude multiple button proc entries (Eric Brunet)
14564 Moved arch-specific code out of include/platform/aclinux.h
14566 3) iASL Compiler Version X2044:
14568 Implemented error checking for the string used in the EISAID macro
14569 (Usually used in the definition of the _HID object.) The code now
14570 strictly enforces the PnP format - exactly 7 characters, 3
14571 uppercase letters and 4 hex digits.
14573 If a raw string is used in the definition of the _HID object
14574 (instead of the EISAID macro), the string must contain all
14575 alphanumeric characters (e.g., "*PNP0011" is not allowed because
14578 Implemented checking for invalid use of ACPI reserved names for
14579 most of the name creation operators (Name, Device, Event, Mutex,
14580 OperationRegion, PowerResource, Processor, and ThermalZone.)
14581 Previously, this check was only performed for control methods.
14583 Implemented an additional check on the Name operator to emit an
14584 error if a reserved name that must be implemented in ASL as a
14585 control method is used. We know that a reserved name must be a
14586 method if it is defined with input arguments.
14588 The warning emitted when a namespace object reference is not found
14589 during the cross reference phase has been changed into an error.
14590 The "External" directive should be used for names defined in other
14594 4) Tools and Utilities
14596 The 16-bit tools (adump16 and aexec16) have been regenerated and
14599 Fixed a problem with the output of both acpidump and adump16 where
14600 the indentation of closing parentheses and brackets was not
14602 aligned properly with the parent block.
14605 ----------------------------------------
14606 03 May 2002. Summary of changes for this release.
14609 1) ACPI CA Core Subsystem Version 20020503:
14611 Added support a new OSL interface that allows the host operating
14613 system software to override the DSDT found in the firmware -
14614 AcpiOsTableOverride. With this interface, the OSL can examine the
14615 version of the firmware DSDT and replace it with a different one
14618 Added new external interfaces for accessing ACPI registers from
14619 device drivers and other system software - AcpiGetRegister and
14620 AcpiSetRegister. This was simply an externalization of the
14621 existing AcpiHwBitRegister interfaces.
14623 Fixed a regression introduced in the previous build where the
14624 ASL/AML CreateField operator always returned an error,
14625 "destination must be a NS Node".
14627 Extended the maximum time (before failure) to successfully enable
14628 ACPI mode to 3 seconds.
14630 Code and Data Size: Current core subsystem library sizes are shown
14631 below. These are the code and data sizes for the acpica.lib
14632 produced by the Microsoft Visual C++ 6.0 compiler, and these
14633 values do not include any ACPI driver or OSPM code. The debug
14634 version of the code includes the debug output trace mechanism and
14635 has a larger code and data size. Note that these values will vary
14636 depending on the efficiency of the compiler and the compiler
14637 options used during generation.
14640 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14641 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14643 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14644 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14649 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
14650 free. While 3 out of 4 of our in-house systems work fine, the last
14651 one still hangs when testing the LAPIC timer.
14653 Renamed many files in 2.5 kernel release to omit "acpi_" from the
14656 Added warning on boot for Presario 711FR.
14658 Sleep improvements (Pavel Machek)
14660 ACPI can now be built without CONFIG_PCI enabled.
14662 IA64: Fixed memory map functions (JI Lee)
14665 3) iASL Compiler Version X2043:
14667 Added support to allow the compiler to be integrated into the MS
14668 VC++ development environment for one-button compilation of single
14669 files or entire projects -- with error-to-source-line mapping.
14671 Implemented support for compile-time constant folding for the
14672 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
14673 specification. This allows the ASL writer to use expressions
14674 instead of Integer/Buffer/String constants in terms that must
14675 evaluate to constants at compile time and will also simplify the
14676 emitted AML in any such sub-expressions that can be folded
14677 (evaluated at compile-time.) This increases the size of the
14678 compiler significantly because a portion of the ACPI CA AML
14679 interpreter is included within the compiler in order to pre-
14680 evaluate constant expressions.
14683 Fixed a problem with the "Unicode" ASL macro that caused the
14684 compiler to fault. (This macro is used in conjunction with the
14685 _STR reserved name.)
14687 Implemented an AML opcode optimization to use the Zero, One, and
14688 Ones opcodes where possible to further reduce the size of integer
14689 constants and thus reduce the overall size of the generated AML
14692 Implemented error checking for new reserved terms for ACPI version
14695 Implemented the -qr option to display the current list of ACPI
14696 reserved names known to the compiler.
14698 Implemented the -qc option to display the current list of ASL
14699 operators that are allowed within constant expressions and can
14700 therefore be folded at compile time if the operands are constants.
14705 Updated the Programmer's Reference for new interfaces, data types,
14706 and memory allocation model options.
14708 Updated the iASL Compiler User Reference to apply new format and
14709 add information about new features and options.
14711 ----------------------------------------
14712 19 April 2002. Summary of changes for this release.
14714 1) ACPI CA Core Subsystem Version 20020419:
14716 The source code base for the Core Subsystem has been completely
14717 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
14718 versions. The Lint option files used are included in the
14719 /acpi/generate/lint directory.
14721 Implemented enhanced status/error checking across the entire
14722 Hardware manager subsystem. Any hardware errors (reported from
14723 the OSL) are now bubbled up and will abort a running control
14727 Fixed a problem where the per-ACPI-table integer width (32 or 64)
14728 was stored only with control method nodes, causing a fault when
14729 non-control method code was executed during table loading. The
14730 solution implemented uses a global variable to indicate table
14731 width across the entire ACPI subsystem. Therefore, ACPI CA does
14732 not support mixed integer widths across different ACPI tables
14735 Fixed a problem where NULL extended fields (X fields) in an ACPI
14736 2.0 ACPI FADT caused the table load to fail. Although the
14737 existing ACPI specification is a bit fuzzy on this topic, the new
14738 behavior is to fall back on a ACPI 1.0 field if the corresponding
14739 ACPI 2.0 X field is zero (even though the table revision indicates
14740 a full ACPI 2.0 table.) The ACPI specification will be updated to
14741 clarify this issue.
14743 Fixed a problem with the SystemMemory operation region handler
14744 where memory was always accessed byte-wise even if the AML-
14745 specified access width was larger than a byte. This caused
14746 problems on systems with memory-mapped I/O. Memory is now
14747 accessed with the width specified. On systems that do not support
14748 non-aligned transfers, a check is made to guarantee proper address
14749 alignment before proceeding in order to avoid an AML-caused
14750 alignment fault within the kernel.
14753 Fixed a problem with the ExtendedIrq resource where only one byte
14754 of the 4-byte Irq field was extracted.
14756 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
14757 function was out of date and required a rewrite.
14759 Code and Data Size: Current core subsystem library sizes are shown
14760 below. These are the code and data sizes for the acpica.lib
14761 produced by the Microsoft Visual C++ 6.0 compiler, and these
14762 values do not include any ACPI driver or OSPM code. The debug
14763 version of the code includes the debug output trace mechanism and
14764 has a larger code and data size. Note that these values will vary
14765 depending on the efficiency of the compiler and the compiler
14766 options used during generation.
14769 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14770 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14772 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14773 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14778 PCI IRQ routing fixes (Dominik Brodowski)
14781 3) iASL Compiler Version X2042:
14783 Implemented an additional compile-time error check for a field
14784 unit whose size + minimum access width would cause a run-time
14785 access beyond the end-of-region. Previously, only the field size
14786 itself was checked.
14788 The Core subsystem and iASL compiler now share a common parse
14789 object in preparation for compile-time evaluation of the type
14790 3/4/5 ASL operators.
14793 ----------------------------------------
14794 Summary of changes for this release: 03_29_02
14796 1) ACPI CA Core Subsystem Version 20020329:
14798 Implemented support for late evaluation of TermArg operands to
14799 Buffer and Package objects. This allows complex expressions to be
14800 used in the declarations of these object types.
14802 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
14803 1.0, if the field was larger than 32 bits, it was returned as a
14804 buffer - otherwise it was returned as an integer. In ACPI 2.0,
14805 the field is returned as a buffer only if the field is larger than
14806 64 bits. The TableRevision is now considered when making this
14807 conversion to avoid incompatibility with existing ASL code.
14809 Implemented logical addressing for AcpiOsGetRootPointer. This
14810 allows an RSDP with either a logical or physical address. With
14811 this support, the host OS can now override all ACPI tables with
14812 one logical RSDP. Includes implementation of "typed" pointer
14813 support to allow a common data type for both physical and logical
14814 pointers internally. This required a change to the
14815 AcpiOsGetRootPointer interface.
14817 Implemented the use of ACPI 2.0 Generic Address Structures for all
14818 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
14819 mapped I/O for these ACPI features.
14821 Initialization now ignores not only non-required tables (All
14822 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
14823 not validate the table headers of unrecognized tables.
14825 Fixed a problem where a notify handler could only be
14826 installed/removed on an object of type Device. All "notify"
14828 objects are now supported -- Devices, Processor, Power, and
14831 Removed most verbosity from the ACPI_DB_INFO debug level. Only
14832 critical information is returned when this debug level is enabled.
14834 Code and Data Size: Current core subsystem library sizes are shown
14835 below. These are the code and data sizes for the acpica.lib
14836 produced by the Microsoft Visual C++ 6.0 compiler, and these
14837 values do not include any ACPI driver or OSPM code. The debug
14838 version of the code includes the debug output trace mechanism and
14839 has a larger code and data size. Note that these values will vary
14840 depending on the efficiency of the compiler and the compiler
14841 options used during generation.
14844 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14845 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14847 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14848 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14853 The processor driver (acpi_processor.c) now fully supports ACPI
14854 2.0-based processor performance control (e.g. Intel(R)
14855 SpeedStep(TM) technology) Note that older laptops that only have
14856 the Intel "applet" interface are not supported through this. The
14857 'limit' and 'performance' interface (/proc) are fully functional.
14858 [Note that basic policy for controlling performance state
14859 transitions will be included in the next version of ospmd.] The
14860 idle handler was modified to more aggressively use C2, and PIIX4
14861 errata handling underwent a complete overhaul (big thanks to
14862 Dominik Brodowski).
14864 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
14865 based devices in the ACPI namespace are now dynamically bound
14866 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
14867 This allows, among other things, ACPI to resolve bus numbers for
14868 subordinate PCI bridges.
14870 Enhanced PCI IRQ routing to get the proper bus number for _PRT
14871 entries defined underneath PCI bridges.
14873 Added IBM 600E to bad bios list due to invalid _ADR value for
14874 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
14876 In the process of adding full MADT support (e.g. IOAPIC) for IA32
14877 (acpi.c, mpparse.c) -- stay tuned.
14879 Added back visual differentiation between fixed-feature and
14880 control-method buttons in dmesg. Buttons are also subtyped (e.g.
14881 button/power/PWRF) to simplify button identification.
14883 We no longer use -Wno-unused when compiling debug. Please ignore
14884 any "_THIS_MODULE defined but not used" messages.
14886 Can now shut down the system using "magic sysrq" key.
14889 3) iASL Compiler version 2041:
14891 Fixed a problem where conversion errors for hex/octal/decimal
14892 constants were not reported.
14894 Implemented a fix for the General Register template Address field.
14895 This field was 8 bits when it should be 64.
14897 Fixed a problem where errors/warnings were no longer being emitted
14898 within the listing output file.
14900 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
14901 exactly 4 characters, alphanumeric only.
14906 ----------------------------------------
14907 Summary of changes for this release: 03_08_02
14910 1) ACPI CA Core Subsystem Version 20020308:
14912 Fixed a problem with AML Fields where the use of the "AccessAny"
14913 keyword could cause an interpreter error due to attempting to read
14914 or write beyond the end of the parent Operation Region.
14916 Fixed a problem in the SystemMemory Operation Region handler where
14917 an attempt was made to map memory beyond the end of the region.
14918 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
14919 errors on some Linux systems.
14921 Fixed a problem where the interpreter/namespace "search to root"
14922 algorithm was not functioning for some object types. Relaxed the
14923 internal restriction on the search to allow upsearches for all
14924 external object types as well as most internal types.
14929 We now use safe_halt() macro versus individual calls to sti | hlt.
14931 Writing to the processor limit interface should now work. "echo 1"
14932 will increase the limit, 2 will decrease, and 0 will reset to the
14939 Fixed segfault on Linux version.
14942 ----------------------------------------
14943 Summary of changes for this release: 02_25_02
14945 1) ACPI CA Core Subsystem:
14948 Fixed a problem where the GPE bit masks were not initialized
14949 properly, causing erratic GPE behavior.
14951 Implemented limited support for multiple calling conventions. The
14952 code can be generated with either the VPL (variable parameter
14953 list, or "C") convention, or the FPL (fixed parameter list, or
14954 "Pascal") convention. The core subsystem is about 3.4% smaller
14955 when generated with FPL.
14960 Re-add some /proc/acpi/event functionality that was lost during
14963 Resolved issue with /proc events for fixed-feature buttons showing
14964 up as the system device.
14966 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
14968 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
14970 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
14972 Fixed limit interface & usage to fix bugs with passive cooling
14975 Restructured PRT support.
14978 ----------------------------------------
14979 Summary of changes for this label: 02_14_02
14982 1) ACPI CA Core Subsystem:
14984 Implemented support in AcpiLoadTable to allow loading of FACS and
14987 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
14988 been removed. All 64-bit platforms should be migrated to the ACPI
14989 2.0 tables. The actbl71.h header has been removed from the source
14992 All C macros defined within the subsystem have been prefixed with
14993 "ACPI_" to avoid collision with other system include files.
14995 Removed the return value for the two AcpiOsPrint interfaces, since
14996 it is never used and causes lint warnings for ignoring the return
14999 Added error checking to all internal mutex acquire and release
15000 calls. Although a failure from one of these interfaces is
15001 probably a fatal system error, these checks will cause the
15002 immediate abort of the currently executing method or interface.
15004 Fixed a problem where the AcpiSetCurrentResources interface could
15005 fault. This was a side effect of the deployment of the new memory
15008 Fixed a couple of problems with the Global Lock support introduced
15009 in the last major build. The "common" (1.0/2.0) internal FACS was
15010 being overwritten with the FACS signature and clobbering the
15011 Global Lock pointer. Also, the actual firmware FACS was being
15012 unmapped after construction of the "common" FACS, preventing
15013 access to the actual Global Lock field within it. The "common"
15014 internal FACS is no longer installed as an actual ACPI table; it
15015 is used simply as a global.
15017 Code and Data Size: Current core subsystem library sizes are shown
15018 below. These are the code and data sizes for the acpica.lib
15019 produced by the Microsoft Visual C++ 6.0 compiler, and these
15020 values do not include any ACPI driver or OSPM code. The debug
15021 version of the code includes the debug output trace mechanism and
15022 has a larger code and data size. Note that these values will vary
15023 depending on the efficiency of the compiler and the compiler
15024 options used during generation.
15026 Previous Release (02_07_01)
15027 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15028 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15030 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15031 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15036 Updated Linux-specific code for core macro and OSL interface
15037 changes described above.
15039 Improved /proc/acpi/event. It now can be opened only once and has
15040 proper poll functionality.
15042 Fixed and restructured power management (acpi_bus).
15044 Only create /proc "view by type" when devices of that class exist.
15046 Fixed "charging/discharging" bug (and others) in acpi_battery.
15048 Improved thermal zone code.
15051 3) ASL Compiler, version X2039:
15054 Implemented the new compiler restriction on ASL String hex/octal
15055 escapes to non-null, ASCII values. An error results if an invalid
15056 value is used. (This will require an ACPI 2.0 specification
15059 AML object labels that are output to the optional C and ASM source
15060 are now prefixed with both the ACPI table signature and table ID
15061 to help guarantee uniqueness within a large BIOS project.
15064 ----------------------------------------
15065 Summary of changes for this label: 02_01_02
15067 1) ACPI CA Core Subsystem:
15069 ACPI 2.0 support is complete in the entire Core Subsystem and the
15070 ASL compiler. All new ACPI 2.0 operators are implemented and all
15071 other changes for ACPI 2.0 support are complete. With
15072 simultaneous code and data optimizations throughout the subsystem,
15073 ACPI 2.0 support has been implemented with almost no additional
15074 cost in terms of code and data size.
15076 Implemented a new mechanism for allocation of return buffers. If
15077 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
15078 be allocated on behalf of the caller. Consolidated all return
15079 buffer validation and allocation to a common procedure. Return
15080 buffers will be allocated via the primary OSL allocation interface
15081 since it appears that a separate pool is not needed by most users.
15082 If a separate pool is required for these buffers, the caller can
15083 still use the original mechanism and pre-allocate the buffer(s).
15085 Implemented support for string operands within the DerefOf
15088 Restructured the Hardware and Event managers to be table driven,
15089 simplifying the source code and reducing the amount of generated
15092 Split the common read/write low-level ACPI register bitfield
15093 procedure into a separate read and write, simplifying the code
15096 Obsoleted the AcpiOsCallocate OSL interface. This interface was
15097 used only a handful of times and didn't have enough critical mass
15098 for a separate interface. Replaced with a common calloc procedure
15101 Fixed a reported problem with the GPE number mapping mechanism
15102 that allows GPE1 numbers to be non-contiguous with GPE0.
15103 Reorganized the GPE information and shrunk a large array that was
15104 originally large enough to hold info for all possible GPEs (256)
15105 to simply large enough to hold all GPEs up to the largest GPE
15106 number on the machine.
15108 Fixed a reported problem with resource structure alignment on 64-
15111 Changed the AcpiEnableEvent and AcpiDisableEvent external
15112 interfaces to not require any flags for the common case of
15113 enabling/disabling a GPE.
15115 Implemented support to allow a "Notify" on a Processor object.
15117 Most TBDs in comments within the source code have been resolved
15121 Fixed a problem in the interpreter where a standalone parent
15122 prefix (^) was not handled correctly in the interpreter and
15125 Removed obsolete and unnecessary GPE save/restore code.
15127 Implemented Field support in the ASL Load operator. This allows a
15128 table to be loaded from a named field, in addition to loading a
15129 table directly from an Operation Region.
15131 Implemented timeout and handle support in the external Global Lock
15134 Fixed a problem in the AcpiDump utility where pathnames were no
15135 longer being generated correctly during the dump of named objects.
15137 Modified the AML debugger to give a full display of if/while
15138 predicates instead of just one AML opcode at a time. (The
15139 predicate can have several nested ASL statements.) The old method
15140 was confusing during single stepping.
15142 Code and Data Size: Current core subsystem library sizes are shown
15143 below. These are the code and data sizes for the acpica.lib
15144 produced by the Microsoft Visual C++ 6.0 compiler, and these
15145 values do not include any ACPI driver or OSPM code. The debug
15146 version of the code includes the debug output trace mechanism and
15147 has a larger code and data size. Note that these values will vary
15148 depending on the efficiency of the compiler and the compiler
15149 options used during generation.
15151 Previous Release (12_18_01)
15152 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15153 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15155 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15156 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15160 Implemented fix for PIIX reverse throttling errata (Processor
15163 Added new Limit interface (Processor and Thermal drivers)
15165 New thermal policy (Thermal driver)
15167 Many updates to /proc
15169 Battery "low" event support (Battery driver)
15171 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
15173 IA32 - IA64 initialization unification, no longer experimental
15175 Menuconfig options redesigned
15177 3) ASL Compiler, version X2037:
15179 Implemented several new output features to simplify integration of
15180 AML code into firmware: 1) Output the AML in C source code with
15181 labels for each named ASL object. The original ASL source code
15182 is interleaved as C comments. 2) Output the AML in ASM source code
15183 with labels and interleaved ASL source. 3) Output the AML in
15184 raw hex table form, in either C or ASM.
15186 Implemented support for optional string parameters to the
15187 LoadTable operator.
15189 Completed support for embedded escape sequences within string
15190 literals. The compiler now supports all single character escapes
15191 as well as the Octal and Hex escapes. Note: the insertion of a
15192 null byte into a string literal (via the hex/octal escape) causes
15193 the string to be immediately terminated. A warning is issued.
15195 Fixed a problem where incorrect AML was generated for the case
15196 where an ASL namepath consists of a single parent prefix (
15198 ) with no trailing name segments.
15200 The compiler has been successfully generated with a 64-bit C
15206 ----------------------------------------
15207 Summary of changes for this label: 12_18_01
15211 Enhanced blacklist with reason and severity fields. Any table's
15212 signature may now be used to identify a blacklisted system.
15214 Call _PIC control method to inform the firmware which interrupt
15215 model the OS is using. Turn on any disabled link devices.
15217 Cleaned up busmgr /proc error handling (Andreas Dilger)
15219 2) ACPI CA Core Subsystem:
15221 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
15224 Completed implementation of the ACPI 2.0 "Continue",
15225 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
15226 operators. All new ACPI 2.0 operators are now implemented in both
15227 the ASL compiler and the AML interpreter. The only remaining ACPI
15228 2.0 task is support for the String data type in the DerefOf
15229 operator. Fixed a problem with AcquireMutex where the status code
15230 was lost if the caller had to actually wait for the mutex.
15232 Increased the maximum ASL Field size from 64K bits to 4G bits.
15234 Completed implementation of the external Global Lock interfaces --
15235 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
15236 Handler parameters were added.
15238 Completed another pass at removing warnings and issues when
15239 compiling with 64-bit compilers. The code now compiles cleanly
15240 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
15241 add and subtract (diff) macros have changed considerably.
15244 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
15245 64-bit platforms, 32-bits on all others. This type is used
15246 wherever memory allocation and/or the C sizeof() operator is used,
15247 and affects the OSL memory allocation interfaces AcpiOsAllocate
15248 and AcpiOsCallocate.
15250 Implemented sticky user breakpoints in the AML debugger.
15252 Code and Data Size: Current core subsystem library sizes are shown
15253 below. These are the code and data sizes for the acpica.lib
15254 produced by the Microsoft Visual C++ 6.0 compiler, and these
15255 values do not include any ACPI driver or OSPM code. The debug
15256 version of the code includes the debug output trace mechanism and
15257 has a larger code and data size. Note that these values will vary
15258 depending on the efficiency of the compiler and the compiler
15259 options used during generation.
15261 Previous Release (12_05_01)
15262 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15263 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15265 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15266 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15268 3) ASL Compiler, version X2034:
15270 Now checks for (and generates an error if detected) the use of a
15271 Break or Continue statement without an enclosing While statement.
15274 Successfully generated the compiler with the Intel 64-bit C
15277 ----------------------------------------
15278 Summary of changes for this label: 12_05_01
15280 1) ACPI CA Core Subsystem:
15282 The ACPI 2.0 CopyObject operator is fully implemented. This
15283 operator creates a new copy of an object (and is also used to
15284 bypass the "implicit conversion" mechanism of the Store operator.)
15286 The ACPI 2.0 semantics for the SizeOf operator are fully
15287 implemented. The change is that performing a SizeOf on a
15288 reference object causes an automatic dereference of the object to
15289 tha actual value before the size is evaluated. This behavior was
15290 undefined in ACPI 1.0.
15292 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
15293 have been implemented. The interrupt polarity and mode are now
15296 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
15297 appearing in Package objects were not properly converted to
15298 integers when the internal Package was converted to an external
15299 object (via the AcpiEvaluateObject interface.)
15301 Fixed a problem with the namespace object deletion mechanism for
15302 objects created by control methods. There were two parts to this
15303 problem: 1) Objects created during the initialization phase method
15304 parse were not being deleted, and 2) The object owner ID mechanism
15305 to track objects was broken.
15307 Fixed a problem where the use of the ASL Scope operator within a
15308 control method would result in an invalid opcode exception.
15310 Fixed a problem introduced in the previous label where the buffer
15311 length required for the _PRT structure was not being returned
15314 Code and Data Size: Current core subsystem library sizes are shown
15315 below. These are the code and data sizes for the acpica.lib
15316 produced by the Microsoft Visual C++ 6.0 compiler, and these
15317 values do not include any ACPI driver or OSPM code. The debug
15318 version of the code includes the debug output trace mechanism and
15319 has a larger code and data size. Note that these values will vary
15320 depending on the efficiency of the compiler and the compiler
15321 options used during generation.
15323 Previous Release (11_20_01)
15324 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15325 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15328 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15329 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15333 Updated all files to apply cleanly against 2.4.16.
15335 Added basic PCI Interrupt Routing Table (PRT) support for IA32
15336 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
15337 version supports both static and dyanmic PRT entries, but dynamic
15338 entries are treated as if they were static (not yet
15339 reconfigurable). Architecture- specific code to use this data is
15340 absent on IA32 but should be available shortly.
15342 Changed the initialization sequence to start the ACPI interpreter
15343 (acpi_init) prior to initialization of the PCI driver (pci_init)
15344 in init/main.c. This ordering is required to support PRT and
15345 facilitate other (future) enhancement. A side effect is that the
15346 ACPI bus driver and certain device drivers can no longer be loaded
15349 Modified the 'make menuconfig' options to allow PCI Interrupt
15350 Routing support to be included without the ACPI Bus and other
15353 3) ASL Compiler, version X2033:
15355 Fixed some issues with the use of the new CopyObject and
15356 DataTableRegion operators. Both are fully functional.
15358 ----------------------------------------
15359 Summary of changes for this label: 11_20_01
15361 20 November 2001. Summary of changes for this release.
15363 1) ACPI CA Core Subsystem:
15365 Updated Index support to match ACPI 2.0 semantics. Storing a
15366 Integer, String, or Buffer to an Index of a Buffer will store only
15367 the least-significant byte of the source to the Indexed buffer
15368 byte. Multiple writes are not performed.
15370 Fixed a problem where the access type used in an AccessAs ASL
15371 operator was not recorded correctly into the field object.
15373 Fixed a problem where ASL Event objects were created in a
15374 signalled state. Events are now created in an unsignalled state.
15376 The internal object cache is now purged after table loading and
15377 initialization to reduce the use of dynamic kernel memory -- on
15378 the assumption that object use is greatest during the parse phase
15379 of the entire table (versus the run-time use of individual control
15382 ACPI 2.0 variable-length packages are now fully operational.
15384 Code and Data Size: Code and Data optimizations have permitted new
15385 feature development with an actual reduction in the library size.
15386 Current core subsystem library sizes are shown below. These are
15387 the code and data sizes for the acpica.lib produced by the
15388 Microsoft Visual C++ 6.0 compiler, and these values do not include
15389 any ACPI driver or OSPM code. The debug version of the code
15390 includes the debug output trace mechanism and has a larger code
15391 and data size. Note that these values will vary depending on the
15392 efficiency of the compiler and the compiler options used during
15395 Previous Release (11_09_01):
15396 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15397 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15400 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15401 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15405 Enhanced the ACPI boot-time initialization code to allow the use
15406 of Local APIC tables for processor enumeration on IA-32, and to
15407 pave the way for a fully MPS-free boot (on SMP systems) in the
15408 near future. This functionality replaces
15409 arch/i386/kernel/acpitables.c, which was introduced in an earlier
15410 2.4.15-preX release. To enable this feature you must add
15411 "acpi_boot=on" to the kernel command line -- see the help entry
15412 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
15415 Restructured the configuration options to allow boot-time table
15416 parsing support without inclusion of the ACPI Interpreter (and
15419 NOTE: This release does not include fixes for the reported events,
15420 power-down, and thermal passive cooling issues (coming soon).
15424 Added additional typechecking for Fields within restricted access
15425 Operation Regions. All fields within EC and CMOS regions must be
15426 declared with ByteAcc. All fields withing SMBus regions must be
15427 declared with the BufferAcc access type.
15429 Fixed a problem where the listing file output of control methods
15430 no longer interleaved the actual AML code with the ASL source
15436 ----------------------------------------
15437 Summary of changes for this label: 11_09_01
15439 1) ACPI CA Core Subsystem:
15441 Implemented ACPI 2.0-defined support for writes to fields with a
15442 Buffer, String, or Integer source operand that is smaller than the
15443 target field. In these cases, the source operand is zero-extended
15444 to fill the target field.
15446 Fixed a problem where a Field starting bit offset (within the
15447 parent operation region) was calculated incorrectly if the
15449 alignment of the field differed from the access width. This
15450 affected CreateWordField, CreateDwordField, CreateQwordField, and
15451 possibly other fields that use the "AccessAny" keyword.
15453 Fixed a problem introduced in the 11_02_01 release where indirect
15454 stores through method arguments did not operate correctly.
15458 Implemented boot-time ACPI table parsing support
15459 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
15460 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
15461 legacy BIOS interfaces (e.g. MPS) for the configuration of system
15462 processors, memory, and interrupts during setup_arch(). Note that
15463 this patch does not include the required architecture-specific
15464 changes required to apply this information -- subsequent patches
15465 will be posted for both IA32 and IA64 to achieve this.
15467 Added low-level sleep support for IA32 platforms, courtesy of Pat
15468 Mochel. This allows IA32 systems to transition to/from various
15469 sleeping states (e.g. S1, S3), although the lack of a centralized
15470 driver model and power-manageable drivers will prevent its
15471 (successful) use on most systems.
15473 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
15474 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
15475 tables" option, etc.
15477 Increased the default timeout for the EC driver from 1ms to 10ms
15478 (1000 cycles of 10us) to try to address AE_TIME errors during EC
15481 ----------------------------------------
15482 Summary of changes for this label: 11_02_01
15484 1) ACPI CA Core Subsystem:
15486 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
15487 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
15490 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
15491 changes to support ACPI 2.0 Qword field access. Read/Write
15492 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
15493 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
15494 the value parameter for the address space handler interface is now
15495 an ACPI_INTEGER. OSL implementations of these interfaces must now
15496 handle the case where the Width parameter is 64.
15498 Index Fields: Fixed a problem where unaligned bit assembly and
15499 disassembly for IndexFields was not supported correctly.
15501 Index and Bank Fields: Nested Index and Bank Fields are now
15502 supported. During field access, a check is performed to ensure
15503 that the value written to an Index or Bank register is not out of
15504 the range of the register. The Index (or Bank) register is
15505 written before each access to the field data. Future support will
15506 include allowing individual IndexFields to be wider than the
15507 DataRegister width.
15509 Fields: Fixed a problem where the AML interpreter was incorrectly
15510 attempting to write beyond the end of a Field/OpRegion. This was
15511 a boundary case that occurred when a DWORD field was written to a
15512 BYTE access OpRegion, forcing multiple writes and causing the
15513 interpreter to write one datum too many.
15515 Fields: Fixed a problem with Field/OpRegion access where the
15516 starting bit address of a field was incorrectly calculated if the
15517 current access type was wider than a byte (WordAcc, DwordAcc, or
15520 Fields: Fixed a problem where forward references to individual
15521 FieldUnits (individual Field names within a Field definition) were
15522 not resolved during the AML table load.
15524 Fields: Fixed a problem where forward references from a Field
15525 definition to the parent Operation Region definition were not
15526 resolved during the AML table load.
15528 Fields: Duplicate FieldUnit names within a scope are now detected
15529 during AML table load.
15531 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
15532 returned an incorrect name for the root node.
15534 Code and Data Size: Code and Data optimizations have permitted new
15535 feature development with an actual reduction in the library size.
15536 Current core subsystem library sizes are shown below. These are
15537 the code and data sizes for the acpica.lib produced by the
15538 Microsoft Visual C++ 6.0 compiler, and these values do not include
15539 any ACPI driver or OSPM code. The debug version of the code
15540 includes the debug output trace mechanism and has a larger code
15541 and data size. Note that these values will vary depending on the
15542 efficiency of the compiler and the compiler options used during
15545 Previous Release (10_18_01):
15546 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15547 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15550 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15551 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15555 Improved /proc processor output (Pavel Machek) Re-added
15556 MODULE_LICENSE("GPL") to all modules.
15558 3) ASL Compiler version X2030:
15560 Duplicate FieldUnit names within a scope are now detected and
15565 Programmer Reference updated to reflect OSL and address space
15566 handler interface changes described above.
15568 ----------------------------------------
15569 Summary of changes for this label: 10_18_01
15571 ACPI CA Core Subsystem:
15573 Fixed a problem with the internal object reference count mechanism
15574 that occasionally caused premature object deletion. This resolves
15575 all of the outstanding problem reports where an object is deleted
15576 in the middle of an interpreter evaluation. Although this problem
15577 only showed up in rather obscure cases, the solution to the
15578 problem involved an adjustment of all reference counts involving
15579 objects attached to namespace nodes.
15581 Fixed a problem with Field support in the interpreter where
15582 writing to an aligned field whose length is an exact multiple (2
15583 or greater) of the field access granularity would cause an attempt
15584 to write beyond the end of the field.
15586 The top level AML opcode execution functions within the
15587 interpreter have been renamed with a more meaningful and
15588 consistent naming convention. The modules exmonad.c and
15589 exdyadic.c were eliminated. New modules are exoparg1.c,
15590 exoparg2.c, exoparg3.c, and exoparg6.c.
15592 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
15594 Fixed a problem where the AML debugger was causing some internal
15595 objects to not be deleted during subsystem termination.
15597 Fixed a problem with the external AcpiEvaluateObject interface
15598 where the subsystem would fault if the named object to be
15599 evaluated refered to a constant such as Zero, Ones, etc.
15601 Fixed a problem with IndexFields and BankFields where the
15602 subsystem would fault if the index, data, or bank registers were
15603 not defined in the same scope as the field itself.
15605 Added printf format string checking for compilers that support
15606 this feature. Corrected more than 50 instances of issues with
15607 format specifiers within invocations of ACPI_DEBUG_PRINT
15608 throughout the core subsystem code.
15610 The ASL "Revision" operator now returns the ACPI support level
15611 implemented in the core - the value "2" since the ACPI 2.0 support
15612 is more than 50% implemented.
15614 Enhanced the output of the AML debugger "dump namespace" command
15615 to output in a more human-readable form.
15617 Current core subsystem library code sizes are shown below. These
15619 are the code and data sizes for the acpica.lib produced by the
15620 Microsoft Visual C++ 6.0 compiler, and these values do not include
15621 any ACPI driver or OSPM code. The debug version of the code
15622 includes the full debug trace mechanism -- leading to a much
15624 larger code and data size. Note that these values will vary
15625 depending on the efficiency of the compiler and the compiler
15626 options used during generation.
15628 Previous Label (09_20_01):
15629 Non-Debug Version: 65K Code, 5K Data, 70K Total
15630 Debug Version: 138K Code, 58K Data, 196K Total
15634 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15635 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15639 Implemented a "Bad BIOS Blacklist" to track machines that have
15640 known ASL/AML problems.
15642 Enhanced the /proc interface for the thermal zone driver and added
15643 support for _HOT (the critical suspend trip point). The 'info'
15644 file now includes threshold/policy information, and allows setting
15645 of _SCP (cooling preference) and _TZP (polling frequency) values
15646 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
15647 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
15648 preference to the passive/quiet mode (if supported by the ASL).
15650 Implemented a workaround for a gcc bug that resuted in an OOPs
15651 when loading the control method battery driver.
15653 ----------------------------------------
15654 Summary of changes for this label: 09_20_01
15656 ACPI CA Core Subsystem:
15658 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
15659 modified to allow individual GPE levels to be flagged as wake-
15660 enabled (i.e., these GPEs are to remain enabled when the platform
15663 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
15664 support wake-enabled GPEs. This means that upon entering the
15665 sleep state, all GPEs that are not wake-enabled are disabled.
15666 When leaving the sleep state, these GPEs are reenabled.
15668 A local double-precision divide/modulo module has been added to
15669 enhance portability to OS kernels where a 64-bit math library is
15670 not available. The new module is "utmath.c".
15672 Several optimizations have been made to reduce the use of CPU
15673 stack. Originally over 2K, the maximum stack usage is now below
15674 2K at 1860 bytes (1.82k)
15676 Fixed a problem with the AcpiGetFirmwareTable interface where the
15677 root table pointer was not mapped into a logical address properly.
15679 Fixed a problem where a NULL pointer was being dereferenced in the
15680 interpreter code for the ASL Notify operator.
15682 Fixed a problem where the use of the ASL Revision operator
15683 returned an error. This operator now returns the current version
15684 of the ACPI CA core subsystem.
15686 Fixed a problem where objects passed as control method parameters
15687 to AcpiEvaluateObject were always deleted at method termination.
15688 However, these objects may end up being stored into the namespace
15689 by the called method. The object reference count mechanism was
15690 applied to these objects instead of a force delete.
15692 Fixed a problem where static strings or buffers (contained in the
15693 AML code) that are declared as package elements within the ASL
15694 code could cause a fault because the interpreter would attempt to
15695 delete them. These objects are now marked with the "static
15696 object" flag to prevent any attempt to delete them.
15698 Implemented an interpreter optimization to use operands directly
15699 from the state object instead of extracting the operands to local
15700 variables. This reduces stack use and code size, and improves
15703 The module exxface.c was eliminated as it was an unnecessary extra
15706 Current core subsystem library code sizes are shown below. These
15707 are the code and data sizes for the acpica.lib produced by the
15708 Microsoft Visual C++ 6.0 compiler, and these values do not include
15709 any ACPI driver or OSPM code. The debug version of the code
15710 includes the full debug trace mechanism -- leading to a much
15711 larger code and data size. Note that these values will vary
15712 depending on the efficiency of the compiler and the compiler
15713 options used during generation.
15715 Non-Debug Version: 65K Code, 5K Data, 70K Total
15716 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
15717 Total (Previously 195K)
15721 Support for ACPI 2.0 64-bit integers has been added. All ACPI
15722 Integer objects are now 64 bits wide
15724 All Acpi data types and structures are now in lower case. Only
15725 Acpi macros are upper case for differentiation.
15729 Changes to the external interfaces as described above.
15731 ----------------------------------------
15732 Summary of changes for this label: 08_31_01
15734 ACPI CA Core Subsystem:
15736 A bug with interpreter implementation of the ASL Divide operator
15737 was found and fixed. The implicit function return value (not the
15738 explicit store operands) was returning the remainder instead of
15739 the quotient. This was a longstanding bug and it fixes several
15740 known outstanding issues on various platforms.
15742 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
15743 been further optimized for size. There are 700 invocations of the
15744 DEBUG_PRINT macro alone, so each optimization reduces the size of
15745 the debug version of the subsystem significantly.
15747 A stack trace mechanism has been implemented. The maximum stack
15748 usage is about 2K on 32-bit platforms. The debugger command "stat
15749 stack" will display the current maximum stack usage.
15751 All public symbols and global variables within the subsystem are
15752 now prefixed with the string "Acpi". This keeps all of the
15753 symbols grouped together in a kernel map, and avoids conflicts
15754 with other kernel subsystems.
15756 Most of the internal fixed lookup tables have been moved into the
15757 code segment via the const operator.
15759 Several enhancements have been made to the interpreter to both
15760 reduce the code size and improve performance.
15762 Current core subsystem library code sizes are shown below. These
15763 are the code and data sizes for the acpica.lib produced by the
15764 Microsoft Visual C++ 6.0 compiler, and these values do not include
15765 any ACPI driver or OSPM code. The debug version of the code
15766 includes the full debug trace mechanism which contains over 700
15767 invocations of the DEBUG_PRINT macro, 500 function entry macro
15768 invocations, and over 900 function exit macro invocations --
15769 leading to a much larger code and data size. Note that these
15770 values will vary depending on the efficiency of the compiler and
15771 the compiler options used during generation.
15773 Non-Debug Version: 64K Code, 5K Data, 69K Total
15774 Debug Version: 137K Code, 58K Data, 195K Total
15778 Implemented wbinvd() macro, pending a kernel-wide definition.
15780 Fixed /proc/acpi/event to handle poll() and short reads.
15782 ASL Compiler, version X2026:
15784 Fixed a problem introduced in the previous label where the AML
15786 code emitted for package objects produced packages with zero
15789 ----------------------------------------
15790 Summary of changes for this label: 08_16_01
15792 ACPI CA Core Subsystem:
15794 The following ACPI 2.0 ASL operators have been implemented in the
15795 AML interpreter (These are already supported by the Intel ASL
15796 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
15797 ToBuffer. Support for 64-bit AML constants is implemented in the
15798 AML parser, debugger, and disassembler.
15800 The internal memory tracking mechanism (leak detection code) has
15801 been upgraded to reduce the memory overhead (a separate tracking
15802 block is no longer allocated for each memory allocation), and now
15803 supports all of the internal object caches.
15805 The data structures and code for the internal object caches have
15806 been coelesced and optimized so that there is a single cache and
15807 memory list data structure and a single group of functions that
15808 implement generic cache management. This has reduced the code
15809 size in both the debug and release versions of the subsystem.
15811 The DEBUG_PRINT macro(s) have been optimized for size and replaced
15812 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
15813 different, because it generates a single call to an internal
15814 function. This results in a savings of about 90 bytes per
15815 invocation, resulting in an overall code and data savings of about
15816 16% in the debug version of the subsystem.
15820 Fixed C3 disk corruption problems and re-enabled C3 on supporting
15823 Integrated low-level sleep code by Patrick Mochel.
15825 Further tweaked source code Linuxization.
15831 Support for ACPI 2.0 variable length packages is fixed/completed.
15833 Fixed a problem where the optional length parameter for the ACPI
15834 2.0 ToString operator.
15836 Fixed multiple extraneous error messages when a syntax error is
15837 detected within the declaration line of a control method.
15839 ----------------------------------------
15840 Summary of changes for this label: 07_17_01
15842 ACPI CA Core Subsystem:
15844 Added a new interface named AcpiGetFirmwareTable to obtain any
15845 ACPI table via the ACPI signature. The interface can be called at
15846 any time during kernel initialization, even before the kernel
15847 virtual memory manager is initialized and paging is enabled. This
15848 allows kernel subsystems to obtain ACPI tables very early, even
15849 before the ACPI CA subsystem is initialized.
15851 Fixed a problem where Fields defined with the AnyAcc attribute
15852 could be resolved to the incorrect address under the following
15853 conditions: 1) the field width is larger than 8 bits and 2) the
15854 parent operation region is not defined on a DWORD boundary.
15856 Fixed a problem where the interpreter is not being locked during
15857 namespace initialization (during execution of the _INI control
15858 methods), causing an error when an attempt is made to release it
15861 ACPI 2.0 support in the AML Interpreter has begun and will be
15862 ongoing throughout the rest of this year. In this label, The Mod
15863 operator is implemented.
15865 Added a new data type to contain full PCI addresses named
15866 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
15867 and Function values.
15871 Enhanced the Linux version of the source code to change most
15872 capitalized ACPI type names to lowercase. For example, all
15873 instances of ACPI_STATUS are changed to acpi_status. This will
15874 result in a large diff, but the change is strictly cosmetic and
15875 aligns the CA code closer to the Linux coding standard.
15879 The interfaces to the PCI configuration space have been changed to
15880 add the PCI Segment number and to split the single 32-bit combined
15881 DeviceFunction field into two 16-bit fields. This was
15882 accomplished by moving the four values that define an address in
15883 PCI configuration space (segment, bus, device, and function) to
15884 the new ACPI_PCI_ID structure.
15886 The changes to the PCI configuration space interfaces led to a
15887 reexamination of the complete set of address space access
15888 interfaces for PCI, I/O, and Memory. The previously existing 18
15889 interfaces have proven difficult to maintain (any small change
15890 must be propagated across at least 6 interfaces) and do not easily
15891 allow for future expansion to 64 bits if necessary. Also, on some
15892 systems, it would not be appropriate to demultiplex the access
15893 width (8, 16, 32,or 64) before calling the OSL if the
15894 corresponding native OS interfaces contain a similar access width
15895 parameter. For these reasons, the 18 address space interfaces
15896 have been replaced by these 6 new ones:
15898 AcpiOsReadPciConfiguration
15899 AcpiOsWritePciConfiguration
15905 Added a new interface named AcpiOsGetRootPointer to allow the OSL
15906 to perform the platform and/or OS-specific actions necessary to
15907 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
15908 interface will simply call down to the CA core to perform the low-
15909 memory search for the table. On IA-64, the RSDP is obtained from
15910 EFI. Migrating this interface to the OSL allows the CA core to
15912 remain OS and platform independent.
15914 Added a new interface named AcpiOsSignal to provide a generic
15915 "function code and pointer" interface for various miscellaneous
15916 signals and notifications that must be made to the host OS. The
15917 first such signals are intended to support the ASL Fatal and
15918 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
15919 interface has been obsoleted.
15921 The definition of the AcpiFormatException interface has been
15922 changed to simplify its use. The caller no longer must supply a
15923 buffer to the call; A pointer to a const string is now returned
15924 directly. This allows the call to be easily used in printf
15925 statements, etc. since the caller does not have to manage a local
15929 ASL Compiler, Version X2025:
15931 The ACPI 2.0 Switch/Case/Default operators have been implemented
15932 and are fully functional. They will work with all ACPI 1.0
15933 interpreters, since the operators are simply translated to If/Else
15936 The ACPI 2.0 ElseIf operator is implemented and will also work
15937 with 1.0 interpreters, for the same reason.
15939 Implemented support for ACPI 2.0 variable-length packages. These
15940 packages have a separate opcode, and their size is determined by
15941 the interpreter at run-time.
15943 Documentation The ACPI CA Programmer Reference has been updated to
15944 reflect the new interfaces and changes to existing interfaces.
15946 ------------------------------------------
15947 Summary of changes for this label: 06_15_01
15949 ACPI CA Core Subsystem:
15951 Fixed a problem where a DWORD-accessed field within a Buffer
15952 object would get its byte address inadvertently rounded down to
15953 the nearest DWORD. Buffers are always Byte-accessible.
15955 ASL Compiler, version X2024:
15957 Fixed a problem where the Switch() operator would either fault or
15958 hang the compiler. Note however, that the AML code for this ACPI
15959 2.0 operator is not yet implemented.
15961 Compiler uses the new AcpiOsGetTimer interface to obtain compile
15964 Implementation of the CreateField operator automatically converts
15965 a reference to a named field within a resource descriptor from a
15966 byte offset to a bit offset if required.
15968 Added some missing named fields from the resource descriptor
15969 support. These are the names that are automatically created by the
15970 compiler to reference fields within a descriptor. They are only
15971 valid at compile time and are not passed through to the AML
15974 Resource descriptor named fields are now typed as Integers and
15975 subject to compile-time typechecking when used in expressions.
15977 ------------------------------------------
15978 Summary of changes for this label: 05_18_01
15980 ACPI CA Core Subsystem:
15982 Fixed a couple of problems in the Field support code where bits
15983 from adjacent fields could be returned along with the proper field
15984 bits. Restructured the field support code to improve performance,
15985 readability and maintainability.
15987 New DEBUG_PRINTP macro automatically inserts the procedure name
15988 into the output, saving hundreds of copies of procedure name
15989 strings within the source, shrinking the memory footprint of the
15990 debug version of the core subsystem.
15992 Source Code Structure:
15994 The source code directory tree was restructured to reflect the
15995 current organization of the component architecture. Some files
15996 and directories have been moved and/or renamed.
16000 Fixed leaking kacpidpc processes.
16002 Fixed queueing event data even when /proc/acpi/event is not
16005 ASL Compiler, version X2020:
16007 Memory allocation performance enhancement - over 24X compile time
16008 improvement on large ASL files. Parse nodes and namestring
16009 buffers are now allocated from a large internal compiler buffer.
16011 The temporary .SRC file is deleted unless the "-s" option is
16014 The "-d" debug output option now sends all output to the .DBG file
16015 instead of the console.
16017 "External" second parameter is now optional
16019 "ElseIf" syntax now properly allows the predicate
16021 Last operand to "Load" now recognized as a Target operand
16023 Debug object can now be used anywhere as a normal object.
16025 ResourceTemplate now returns an object of type BUFFER
16027 EISAID now returns an object of type INTEGER
16029 "Index" now works with a STRING operand
16031 "LoadTable" now accepts optional parameters
16033 "ToString" length parameter is now optional
16035 "Interrupt (ResourceType," parse error fixed.
16037 "Register" with a user-defined region space parse error fixed
16039 Escaped backslash at the end of a string ("\\") scan/parse error
16042 "Revision" is now an object of type INTEGER.
16046 ------------------------------------------
16047 Summary of changes for this label: 05_02_01
16051 /proc/acpi/event now blocks properly.
16053 Removed /proc/sys/acpi. You can still dump your DSDT from
16056 ACPI CA Core Subsystem:
16058 Fixed a problem introduced in the previous label where some of the
16059 "small" resource descriptor types were not recognized.
16061 Improved error messages for the case where an ASL Field is outside
16062 the range of the parent operation region.
16064 ASL Compiler, version X2018:
16067 Added error detection for ASL Fields that extend beyond the length
16068 of the parent operation region (only if the length of the region
16069 is known at compile time.) This includes fields that have a
16070 minimum access width that is smaller than the parent region, and
16071 individual field units that are partially or entirely beyond the
16072 extent of the parent.
16076 ------------------------------------------
16077 Summary of changes for this label: 04_27_01
16079 ACPI CA Core Subsystem:
16081 Fixed a problem where the namespace mutex could be released at the
16082 wrong time during execution of AcpiRemoveAddressSpaceHandler.
16084 Added optional thread ID output for debug traces, to simplify
16085 debugging of multiple threads. Added context switch notification
16086 when the debug code realizes that a different thread is now
16087 executing ACPI code.
16089 Some additional external data types have been prefixed with the
16090 string "ACPI_" for consistency. This may effect existing code.
16091 The data types affected are the external callback typedefs - e.g.,
16093 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
16097 Fixed an issue with the OSL semaphore implementation where a
16098 thread was waking up with an error from receiving a SIGCHLD
16101 Linux version of ACPI CA now uses the system C library for string
16102 manipulation routines instead of a local implementation.
16104 Cleaned up comments and removed TBDs.
16106 ASL Compiler, version X2017:
16108 Enhanced error detection and reporting for all file I/O
16113 Programmer Reference updated to version 1.06.
16117 ------------------------------------------
16118 Summary of changes for this label: 04_13_01
16120 ACPI CA Core Subsystem:
16122 Restructured support for BufferFields and RegionFields.
16123 BankFields support is now fully operational. All known 32-bit
16124 limitations on field sizes have been removed. Both BufferFields
16125 and (Operation) RegionFields are now supported by the same field
16128 Resource support now supports QWORD address and IO resources. The
16129 16/32/64 bit address structures and the Extended IRQ structure
16130 have been changed to properly handle Source Resource strings.
16132 A ThreadId of -1 is now used to indicate a "mutex not acquired"
16133 condition internally and must never be returned by AcpiOsThreadId.
16134 This reserved value was changed from 0 since Unix systems allow a
16139 Driver code reorganized to enhance portability
16141 Added a kernel configuration option to control ACPI_DEBUG
16143 Fixed the EC driver to honor _GLK.
16145 ASL Compiler, version X2016:
16147 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
16148 address space was set to 0, not 0x7f as it should be.
16150 ------------------------------------------
16151 Summary of changes for this label: 03_13_01
16153 ACPI CA Core Subsystem:
16155 During ACPI initialization, the _SB_._INI method is now run if
16158 Notify handler fix - notifies are deferred until the parent method
16159 completes execution. This fixes the "mutex already acquired"
16160 issue seen occasionally.
16162 Part of the "implicit conversion" rules in ACPI 2.0 have been
16163 found to cause compatibility problems with existing ASL/AML. The
16164 convert "result-to-target-type" implementation has been removed
16165 for stores to method Args and Locals. Source operand conversion
16166 is still fully implemented. Possible changes to ACPI 2.0
16167 specification pending.
16169 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
16172 Fix for compiler warnings for 64-bit compiles.
16176 /proc output aligned for easier parsing.
16178 Release-version compile problem fixed.
16180 New kernel configuration options documented in Configure.help.
16182 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
16187 Power resource driver integrated with bus manager.
16189 Fixed kernel fault during active cooling for thermal zones.
16193 The source code tree has been restructured.
16197 ------------------------------------------
16198 Summary of changes for this label: 03_02_01
16200 Linux OS Services Layer (OSL):
16202 Major revision of all Linux-specific code.
16204 Modularized all ACPI-specific drivers.
16206 Added new thermal zone and power resource drivers.
16208 Revamped /proc interface (new functionality is under /proc/acpi).
16210 New kernel configuration options.
16212 Linux known issues:
16214 New kernel configuration options not documented in Configure.help
16218 Module dependencies not currently implemented. If used, they
16219 should be loaded in this order: busmgr, power, ec, system,
16220 processor, battery, ac_adapter, button, thermal.
16222 Modules will not load if CONFIG_MODVERSION is set.
16224 IBM 600E - entering S5 may reboot instead of shutting down.
16226 IBM 600E - Sleep button may generate "Invalid <NULL> context"
16229 Some systems may fail with "execution mutex already acquired"
16232 ACPI CA Core Subsystem:
16234 Added a new OSL Interface, AcpiOsGetThreadId. This was required
16235 for the deadlock detection code. Defined to return a non-zero, 32-
16236 bit thread ID for the currently executing thread. May be a non-
16237 zero constant integer on single-thread systems.
16239 Implemented deadlock detection for internal subsystem mutexes. We
16240 may add conditional compilation for this code (debug only) later.
16242 ASL/AML Mutex object semantics are now fully supported. This
16243 includes multiple acquires/releases by owner and support for the
16245 Mutex SyncLevel parameter.
16247 A new "Force Release" mechanism automatically frees all ASL
16248 Mutexes that have been acquired but not released when a thread
16249 exits the interpreter. This forces conformance to the ACPI spec
16250 ("All mutexes must be released when an invocation exits") and
16251 prevents deadlocked ASL threads. This mechanism can be expanded
16252 (later) to monitor other resource acquisitions if OEM ASL code
16253 continues to misbehave (which it will).
16255 Several new ACPI exception codes have been added for the Mutex
16258 Recursive method calls are now allowed and supported (the ACPI
16259 spec does in fact allow recursive method calls.) The number of
16260 recursive calls is subject to the restrictions imposed by the
16261 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
16264 Implemented support for the SyncLevel parameter for control
16265 methods (ACPI 2.0 feature)
16267 Fixed a deadlock problem when multiple threads attempted to use
16270 Fixed a problem where the string length of a String package
16271 element was not always set in a package returned from
16272 AcpiEvaluateObject.
16274 Fixed a problem where the length of a String package element was
16275 not always included in the length of the overall package returned
16276 from AcpiEvaluateObject.
16278 Added external interfaces (Acpi*) to the ACPI debug memory
16279 manager. This manager keeps a list of all outstanding
16280 allocations, and can therefore detect memory leaks and attempts to
16281 free memory blocks more than once. Useful for code such as the
16282 power manager, etc. May not be appropriate for device drivers.
16283 Performance with the debug code enabled is slow.
16285 The ACPI Global Lock is now an optional hardware element.
16287 ASL Compiler Version X2015:
16289 Integrated changes to allow the compiler to be generated on
16290 multiple platforms.
16292 Linux makefile added to generate the compiler on Linux
16296 All platform-specific headers have been moved to their own
16297 subdirectory, Include/Platform.
16299 New source file added, Interpreter/ammutex.c
16301 New header file, Include/acstruct.h
16305 The programmer reference has been updated for the following new
16306 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
16308 ------------------------------------------
16309 Summary of changes for this label: 02_08_01
16311 Core ACPI CA Subsystem: Fixed a problem where an error was
16312 incorrectly returned if the return resource buffer was larger than
16313 the actual data (in the resource interfaces).
16315 References to named objects within packages are resolved to the
16317 full pathname string before packages are returned directly (via
16318 the AcpiEvaluateObject interface) or indirectly via the resource
16321 Linux OS Services Layer (OSL):
16323 Improved /proc battery interface.
16326 Added C-state debugging output and other miscellaneous fixes.
16328 ASL Compiler Version X2014:
16330 All defined method arguments can now be used as local variables,
16331 including the ones that are not actually passed in as parameters.
16332 The compiler tracks initialization of the arguments and issues an
16333 exception if they are used without prior assignment (just like
16336 The -o option now specifies a filename prefix that is used for all
16337 output files, including the AML output file. Otherwise, the
16338 default behavior is as follows: 1) the AML goes to the file
16339 specified in the DSDT. 2) all other output files use the input
16340 source filename as the base.
16342 ------------------------------------------
16343 Summary of changes for this label: 01_25_01
16345 Core ACPI CA Subsystem: Restructured the implementation of object
16346 store support within the interpreter. This includes support for
16347 the Store operator as well as any ASL operators that include a
16350 Partially implemented support for Implicit Result-to-Target
16351 conversion. This is when a result object is converted on the fly
16352 to the type of an existing target object. Completion of this
16353 support is pending further analysis of the ACPI specification
16354 concerning this matter.
16356 CPU-specific code has been removed from the subsystem (hardware
16359 New Power Management Timer functions added
16361 Linux OS Services Layer (OSL): Moved system state transition code
16362 to the core, fixed it, and modified Linux OSL accordingly.
16364 Fixed C2 and C3 latency calculations.
16367 We no longer use the compilation date for the version message on
16368 initialization, but retrieve the version from AcpiGetSystemInfo().
16370 Incorporated for fix Sony VAIO machines.
16372 Documentation: The Programmer Reference has been updated and
16376 ASL Compiler: Version X2013: Fixed a problem where the line
16377 numbering and error reporting could get out of sync in the
16378 presence of multiple include files.
16380 ------------------------------------------
16381 Summary of changes for this label: 01_15_01
16383 Core ACPI CA Subsystem:
16385 Implemented support for type conversions in the execution of the
16386 ASL Concatenate operator (The second operand is converted to
16387 match the type of the first operand before concatenation.)
16389 Support for implicit source operand conversion is partially
16390 implemented. The ASL source operand types Integer, Buffer, and
16391 String are freely interchangeable for most ASL operators and are
16392 converted by the interpreter on the fly as required. Implicit
16393 Target operand conversion (where the result is converted to the
16394 target type before storing) is not yet implemented.
16396 Support for 32-bit and 64-bit BCD integers is implemented.
16398 Problem fixed where a field read on an aligned field could cause a
16399 read past the end of the field.
16401 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
16402 does not return a value, but the caller expects one. (The ASL
16403 compiler flags this as a warning.)
16408 1. Static typechecking of all operands is implemented. This
16409 prevents the use of invalid objects (such as using a Package where
16410 an Integer is required) at compile time instead of at interpreter
16412 2. The ASL source line is printed with ALL errors and warnings.
16413 3. Bug fix for source EOF without final linefeed.
16414 4. Debug option is split into a parse trace and a namespace trace.
16415 5. Namespace output option (-n) includes initial values for
16416 integers and strings.
16417 6. Parse-only option added for quick syntax checking.
16418 7. Compiler checks for duplicate ACPI name declarations
16421 1. Relaxed typechecking to allow interchangeability between
16422 strings, integers, and buffers. These types are now converted by
16423 the interpreter at runtime.
16424 2. Compiler reports time taken by each internal subsystem in the
16428 ------------------------------------------
16429 Summary of changes for this label: 12_14_00
16433 This is the first official release of the compiler. Since the
16434 compiler requires elements of the Core Subsystem, this label
16435 synchronizes everything.
16437 ------------------------------------------
16438 Summary of changes for this label: 12_08_00
16441 Fixed a problem where named references within the ASL definition
16442 of both OperationRegions and CreateXXXFields did not work
16443 properly. The symptom was an AE_AML_OPERAND_TYPE during
16444 initialization of the region/field. This is similar (but not
16445 related internally) to the problem that was fixed in the last
16448 Implemented both 32-bit and 64-bit support for the BCD ASL
16449 functions ToBCD and FromBCD.
16451 Updated all legal headers to include "2000" in the copyright
16454 ------------------------------------------
16455 Summary of changes for this label: 12_01_00
16457 Fixed a problem where method invocations within the ASL definition
16458 of both OperationRegions and CreateXXXFields did not work
16459 properly. The symptom was an AE_AML_OPERAND_TYPE during
16460 initialization of the region/field:
16462 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
16463 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
16466 Fixed a problem where operators with more than one nested
16467 subexpression would fail. The symptoms were varied, by mostly
16468 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
16469 problem that has gone unnoticed until now.
16471 Subtract (Add (1,2), Multiply (3,4))
16473 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
16474 previous build (The prefix part of a relative path was handled
16477 Fixed a problem where Operation Region initialization failed if
16478 the operation region name was a "namepath" instead of a simple
16479 "nameseg". Symptom was an AE_NO_OPERAND error.
16481 Fixed a problem where an assignment to a local variable via the
16482 indirect RefOf mechanism only worked for the first such
16483 assignment. Subsequent assignments were ignored.
16485 ------------------------------------------
16486 Summary of changes for this label: 11_15_00
16488 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
16489 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
16490 the AML interpreter does NOT have support for the new 2.0 ASL
16491 grammar terms at this time.
16493 All ACPI hardware access is via the GAS structures in the ACPI 2.0
16496 All physical memory addresses across all platforms are now 64 bits
16497 wide. Logical address width remains dependent on the platform
16500 AcpiOsMapMemory interface changed to a 64-bit physical address.
16502 The AML interpreter integer size is now 64 bits, as per the ACPI
16505 For backwards compatibility with ACPI 1.0, ACPI tables with a
16506 revision number less than 2 use 32-bit integers only.
16508 Fixed a problem where the evaluation of OpRegion operands did not
16509 always resolve them to numbers properly.
16511 ------------------------------------------
16512 Summary of changes for this label: 10_20_00
16514 Fix for CBN_._STA issue. This fix will allow correct access to
16515 CBN_ OpRegions when the _STA returns 0x8.
16517 Support to convert ACPI constants (Ones, Zeros, One) to actual
16518 values before a package object is returned
16520 Fix for method call as predicate to if/while construct causing
16521 incorrect if/while behavior
16523 Fix for Else block package lengths sometimes calculated wrong (if
16526 Fix for Processor object length field, was always zero
16528 Table load abort if FACP sanity check fails
16530 Fix for problem with Scope(name) if name already exists
16532 Warning emitted if a named object referenced cannot be found
16533 (resolved) during method execution.
16539 ------------------------------------------
16540 Summary of changes for this label: 9_29_00
16542 New table initialization interfaces: AcpiInitializeSubsystem no
16543 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
16544 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
16545 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
16548 Note: These interface changes require changes to all existing OSDs
16550 The PCI_Config default address space handler is always installed
16551 at the root namespace object.
16553 -------------------------------------------
16554 Summary of changes for this label: 09_15_00
16556 The new initialization architecture is implemented. New
16557 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
16558 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
16560 (Namespace is automatically loaded when a table is loaded)
16562 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
16563 52 bytes to 32 bytes. There is usually one of these for every
16564 namespace object, so the memory savings is significant.
16566 Implemented just-in-time evaluation of the CreateField operators.
16568 Bug fixes for IA-64 support have been integrated.
16570 Additional code review comments have been implemented
16572 The so-called "third pass parse" has been replaced by a final walk
16573 through the namespace to initialize all operation regions (address
16574 spaces) and fields that have not yet been initialized during the
16575 execution of the various _INI and REG methods.
16577 New file - namespace/nsinit.c
16579 -------------------------------------------
16580 Summary of changes for this label: 09_01_00
16582 Namespace manager data structures have been reworked to change the
16583 primary object from a table to a single object. This has
16584 resulted in dynamic memory savings of 3X within the namespace and
16585 2X overall in the ACPI CA subsystem.
16587 Fixed problem where the call to AcpiEvFindPciRootBuses was
16588 inadvertently left commented out.
16590 Reduced the warning count when generating the source with the GCC
16593 Revision numbers added to each module header showing the
16594 SourceSafe version of the file. Please refer to this version
16595 number when giving us feedback or comments on individual modules.
16597 The main object types within the subsystem have been renamed to
16598 clarify their purpose:
16600 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
16601 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
16602 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
16604 NOTE: no changes to the initialization sequence are included in
16607 -------------------------------------------
16608 Summary of changes for this label: 08_23_00
16610 Fixed problem where TerminateControlMethod was being called
16611 multiple times per method
16613 Fixed debugger problem where single stepping caused a semaphore to
16616 Improved performance through additional parse object caching -
16617 added ACPI_EXTENDED_OP type
16619 -------------------------------------------
16620 Summary of changes for this label: 08_10_00
16622 Parser/Interpreter integration: Eliminated the creation of
16623 complete parse trees for ACPI tables and control methods.
16624 Instead, parse subtrees are created and then deleted as soon as
16625 they are processed (Either entered into the namespace or executed
16626 by the interpreter). This reduces the use of dynamic kernel
16627 memory significantly. (about 10X)
16629 Exception codes broken into classes and renumbered. Be sure to
16630 recompile all code that includes acexcep.h. Hopefully we won't
16631 have to renumber the codes again now that they are split into
16632 classes (environment, programmer, AML code, ACPI table, and
16635 Fixed some additional alignment issues in the Resource Manager
16638 Implemented semaphore tracking in the AcpiExec utility, and fixed
16639 several places where mutexes/semaphores were being unlocked
16640 without a corresponding lock operation. There are no known
16641 semaphore or mutex "leaks" at this time.
16643 Fixed the case where an ASL Return operator is used to return an
16646 -------------------------------------------
16647 Summary of changes for this label: 07_28_00
16649 Fixed a problem with the way addresses were calculated in
16650 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
16651 manifested itself when a Field was created with WordAccess or
16652 DwordAccess, but the field unit defined within the Field was less
16654 than a Word or Dword.
16656 Fixed a problem in AmlDumpOperands() module's loop to pull
16657 operands off of the operand stack to display information. The
16658 problem manifested itself as a TLB error on 64-bit systems when
16659 accessing an operand stack with two or more operands.
16661 Fixed a problem with the PCI configuration space handlers where
16662 context was getting confused between accesses. This required a
16663 change to the generic address space handler and address space
16664 setup definitions. Handlers now get both a global handler context
16665 (this is the one passed in by the user when executing
16666 AcpiInstallAddressSpaceHandler() and a specific region context
16667 that is unique to each region (For example, the _ADR, _SEG and
16668 _BBN values associated with a specific region). The generic
16669 function definitions have changed to the following:
16671 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
16672 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
16673 *HandlerContext, // This used to be void *Context void
16674 *RegionContext); // This is an additional parameter
16676 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
16677 RegionHandle, UINT32 Function, void *HandlerContext, void
16678 **RegionContext); // This used to be **ReturnContext
16680 -------------------------------------------
16681 Summary of changes for this label: 07_21_00
16683 Major file consolidation and rename. All files within the
16684 interpreter have been renamed as well as most header files. This
16685 was done to prevent collisions with existing files in the host
16686 OSs -- filenames such as "config.h" and "global.h" seem to be
16687 quite common. The VC project files have been updated. All
16688 makefiles will require modification.
16690 The parser/interpreter integration continues in Phase 5 with the
16691 implementation of a complete 2-pass parse (the AML is parsed
16692 twice) for each table; This avoids the construction of a huge
16693 parse tree and therefore reduces the amount of dynamic memory
16694 required by the subsystem. Greater use of the parse object cache
16695 means that performance is unaffected.
16697 Many comments from the two code reviews have been rolled in.
16699 The 64-bit alignment support is complete.
16701 -------------------------------------------
16702 Summary of changes for this label: 06_30_00
16704 With a nod and a tip of the hat to the technology of yesteryear,
16705 we've added support in the source code for 80 column output
16706 devices. The code is now mostly constrained to 80 columns or
16707 less to support environments and editors that 1) cannot display
16708 or print more than 80 characters on a single line, and 2) cannot
16709 disable line wrapping.
16711 A major restructuring of the namespace data structure has been
16712 completed. The result is 1) cleaner and more
16713 understandable/maintainable code, and 2) a significant reduction
16714 in the dynamic memory requirement for each named ACPI object
16717 -------------------------------------------
16718 Summary of changes for this label: 06_23_00
16720 Linux support has been added. In order to obtain approval to get
16721 the ACPI CA subsystem into the Linux kernel, we've had to make
16722 quite a few changes to the base subsystem that will affect all
16723 users (all the changes are generic and OS- independent). The
16724 effects of these global changes have been somewhat far reaching.
16725 Files have been merged and/or renamed and interfaces have been
16726 renamed. The major changes are described below.
16728 Osd* interfaces renamed to AcpiOs* to eliminate namespace
16729 pollution/confusion within our target kernels. All OSD
16730 interfaces must be modified to match the new naming convention.
16732 Files merged across the subsystem. A number of the smaller source
16733 and header files have been merged to reduce the file count and
16734 increase the density of the existing files. There are too many
16735 to list here. In general, makefiles that call out individual
16736 files will require rebuilding.
16738 Interpreter files renamed. All interpreter files now have the
16739 prefix am* instead of ie* and is*.
16741 Header files renamed: The acapi.h file is now acpixf.h. The
16742 acpiosd.h file is now acpiosxf.h. We are removing references to
16743 the acronym "API" since it is somewhat windowsy. The new name is
16744 "external interface" or xface or xf in the filenames.j
16747 All manifest constants have been forced to upper case (some were
16748 mixed case.) Also, the string "ACPI_" has been prepended to many
16749 (not all) of the constants, typedefs, and structs.
16751 The globals "DebugLevel" and "DebugLayer" have been renamed
16752 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
16754 All other globals within the subsystem are now prefixed with
16755 "AcpiGbl_" Internal procedures within the subsystem are now
16756 prefixed with "Acpi" (with only a few exceptions). The original
16757 two-letter abbreviation for the subcomponent remains after "Acpi"
16758 - for example, CmCallocate became AcpiCmCallocate.
16760 Added a source code translation/conversion utility. Used to
16761 generate the Linux source code, it can be modified to generate
16762 other types of source as well. Can also be used to cleanup
16763 existing source by removing extraneous spaces and blank lines.
16764 Found in tools/acpisrc/*
16766 OsdUnMapMemory was renamed to OsdUnmapMemory and then
16767 AcpiOsUnmapMemory. (UnMap became Unmap).
16769 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
16770 When set to one, this indicates that the caller wants to use the
16772 semaphore as a mutex, not a counting semaphore. ACPI CA uses
16773 both types. However, implementers of this call may want to use
16774 different OS primitives depending on the type of semaphore
16775 requested. For example, some operating systems provide separate
16777 "mutex" and "semaphore" interfaces - where the mutex interface is
16778 much faster because it doesn't have all the overhead of a full
16779 semaphore implementation.
16781 Fixed a deadlock problem where a method that accesses the PCI
16782 address space can block forever if it is the first access to the
16785 -------------------------------------------
16786 Summary of changes for this label: 06_02_00
16788 Support for environments that cannot handle unaligned data
16789 accesses (e.g. firmware and OS environments devoid of alignment
16790 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
16791 been added (via configurable macros) in these three areas: -
16792 Transfer of data from the raw AML byte stream is done via byte
16793 moves instead of word/dword/qword moves. - External objects are
16794 aligned within the user buffer, including package elements (sub-
16795 objects). - Conversion of name strings to UINT32 Acpi Names is now
16798 The Store operator was modified to mimic Microsoft's
16799 implementation when storing to a Buffer Field.
16801 Added a check of the BM_STS bit before entering C3.
16803 The methods subdirectory has been obsoleted and removed. A new
16804 file, cmeval.c subsumes the functionality.
16806 A 16-bit (DOS) version of AcpiExec has been developed. The
16807 makefile is under the acpiexec directory.