1 ----------------------------------------
2 27 May 2016. Summary of changes for version 20160527:
4 This release is available at https://acpica.org/downloads
7 1) ACPICA kernel-resident subsystem:
9 Temporarily reverted the new arbitrary bit length/alignment support in
10 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
11 a number of regressions with the new code that need to be fully resolved
12 and tested before this support can be finally integrated into ACPICA.
13 Apologies for any inconveniences these issues may have caused.
15 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
16 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
17 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
19 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
20 option. Adds a new return macro, return_STR. Junk-uk Kim.
22 Example Code and Data Size: These are the sizes for the OS-independent
23 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
24 debug version of the code includes the debug output trace mechanism and
25 has a much larger code and data size.
28 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
29 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
31 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
32 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
34 ----------------------------------------
35 22 April 2016. Summary of changes for version 20160422:
37 1) ACPICA kernel-resident subsystem:
39 Fixed a regression in the GAS (generic address structure) arbitrary bit
40 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
41 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
43 ACPI 6.0: Added support for new/renamed resource macros. One new argument
44 was added to each of these macros, and the original name has been
45 deprecated. The AML disassembler will always disassemble to the new
46 names. Support for the new macros was added to iASL, disassembler,
47 resource manager, and the acpihelp utility. ACPICA BZ 1274.
49 I2cSerialBus -> I2cSerialBusV2
50 SpiSerialBus -> SpiSerialBusV2
51 UartSerialBus -> UartSerialBusV2
53 ACPI 6.0: Added support for a new integer field that was appended to the
54 package object returned by the _BIX method. This adds iASL compile-time
55 and AML runtime error checking. ACPICA BZ 1273.
57 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
58 Subspace Type2" (Headers, Disassembler, and data table compiler).
60 Example Code and Data Size: These are the sizes for the OS-independent
61 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
62 debug version of the code includes the debug output trace mechanism and
63 has a much larger code and data size.
66 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
67 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
69 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
70 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
73 2) iASL Compiler/Disassembler and Tools:
75 iASL: Implemented an ASL grammar extension to allow/enable executable
76 "module-level code" to be created and executed under the various
77 operators that create new scopes. This type of AML code is already
78 supported in all known AML interpreters, and the grammar change will
79 appear in the next version of the ACPI specification. Simplifies the
80 conditional runtime creation of named objects under these object types:
88 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
89 ease-of-use to the ASL language. The syntax is similar to the
90 corresponding C operator, and is implemented with the existing AML While
91 opcode -- thus requiring no changes to existing AML interpreters.
93 For (Initialize, Predicate, Update) {TermList}
98 Initializer // Nothing | TermArg => ComputationalData
99 Predicate // Nothing | TermArg => ComputationalData
100 Update // Nothing | TermArg => ComputationalData
104 iASL: The _HID/_ADR detection and validation has been enhanced to search
105 under conditionals in order to allow these objects to be conditionally
108 iASL: Fixed several issues with the constant folding feature. The
109 improvement allows better detection and resolution of statements that can
110 be folded at compile time. ACPICA BZ 1266.
112 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
113 conversion to the ASL ElseIf operator where incorrect ASL code could be
116 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
117 sometimes an extra (and extraneous) set of parentheses were emitted for
118 some combinations of operators. Although this did not cause any problems
119 with recompilation of the disassembled code, it made the code more
120 difficult to read. David Box. ACPICA BZ 1231.
122 iASL: Changed to ignore the unreferenced detection for predefined names
123 of resource descriptor elements, when the resource descriptor is
124 created/defined within a control method.
126 iASL: Disassembler: Fix a possible fault with externally declared Buffer
129 ----------------------------------------
130 18 March 2016. Summary of changes for version 20160318:
132 1) ACPICA kernel-resident subsystem:
134 Added support for arbitrary bit lengths and bit offsets for registers
135 defined by the Generic Address Structure. Previously, only aligned bit
136 lengths of 8/16/32/64 were supported. This was sufficient for many years,
137 but recently some machines have been seen that require arbitrary bit-
138 level support. ACPICA BZ 1240. Lv Zheng.
140 Fixed an issue where the \_SB._INI method sometimes must be evaluated
141 before any _REG methods are evaluated. Lv Zheng.
143 Implemented several changes related to ACPI table support
144 (Headers/Disassembler/TableCompiler):
145 NFIT: For ACPI 6.1, updated to add some additional new fields and
147 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
149 DMAR: Added new constants per the 10/2014 DMAR spec.
150 IORT: Added new subtable per the 10/2015 IORT spec.
151 HEST: For ACPI 6.1, added new constants and new subtable.
152 DBG2: Added new constants per the 12/2015 DBG2 spec.
153 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
155 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
157 Updated header support for the DMAR table to match the current version of
160 Added extensions to the ASL Concatenate operator to allow any ACPI object
161 to be passed as an operand. Any object other than Integer/String/Buffer
162 simply returns a string containing the object type. This extends the
163 usefulness of the Printf macros. Previously, Concatenate would abort the
164 control method if a non-data object was encountered.
166 ACPICA source code: Deployed the C "const" keyword across the source code
167 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
169 Example Code and Data Size: These are the sizes for the OS-independent
170 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
171 debug version of the code includes the debug output trace mechanism and
172 has a much larger code and data size.
175 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
176 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
178 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
179 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
182 2) iASL Compiler/Disassembler and Tools:
184 iASL/Disassembler: Improved the heuristic used to determine the number of
185 arguments for an externally defined control method (a method in another
186 table). Although this is an improvement, there is no deterministic way to
187 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
188 will completely solve this problem as it is deployed (automatically) in
191 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
192 statements that could cause errors when the disassembled file is
193 compiled. ACPICA BZ 1243. David Box.
195 iASL: Fixed a regression caused by the merger of the two versions of the
196 local strtoul64. Because of a dependency on a global variable, strtoul64
197 could return an error for integers greater than a 32-bit value. ACPICA BZ
200 iASL: Fixed a regression where a fault could occur for an ASL Return
201 statement if it invokes a control method that is not resolved. ACPICA BZ
204 AcpiXtract: Improved input file validation: detection of binary files and
205 non-acpidump text files.
207 ----------------------------------------
208 12 February 2016. Summary of changes for version 20160212:
210 1) ACPICA kernel-resident subsystem:
212 Implemented full support for the ACPI 6.1 specification (released in
213 January). This version of the specification is available at:
214 http://www.uefi.org/specifications
216 Only a relatively small number of changes were required in ACPICA to
217 support ACPI 6.1, in these areas:
218 - New predefined names
220 - A new subtable for HEST
221 - A few other header changes for new values
223 Ensure \_SB_._INI is executed before any _REG methods are executed. There
224 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
226 Reverted a change made in version 20151218 which enabled method
227 invocations to be targets of various ASL operators (SuperName and Target
228 grammar elements). While the new behavior is supported by the ACPI
229 specification, other AML interpreters do not support this behavior and
230 never will. The ACPI specification will be updated for ACPI 6.2 to remove
231 this support. Therefore, the change was reverted to the original ACPICA
234 ACPICA now supports the GCC 6 compiler.
236 Current Release: (Note: build changes increased sizes)
237 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
238 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
240 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
241 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
244 2) iASL Compiler/Disassembler and Tools:
246 Completed full support for the ACPI 6.0 External() AML opcode. The
247 compiler emits an external AML opcode for each ASL External statement.
248 This opcode is used by the disassembler to assist with the disassembly of
249 external control methods by specifying the required number of arguments
250 for the method. AML interpreters do not use this opcode. To ensure that
251 interpreters do not even see the opcode, a block of one or more external
252 opcodes is surrounded by an "If(0)" construct. As this feature becomes
253 commonly deployed in BIOS code, the ability of disassemblers to correctly
254 disassemble AML code will be greatly improved. David Box.
256 iASL: Implemented support for an optional cross-reference output file.
257 The -lx option will create a the cross-reference file with the suffix
258 "xrf". Three different types of cross-reference are created in this file:
259 - List of object references made from within each control method
260 - Invocation (caller) list for each user-defined control method
261 - List of references to each non-method object in the namespace
263 iASL: Method invocations as ASL Target operands are now disallowed and
264 flagged as errors in preparation for ACPI 6.2 (see the description of the
267 ----------------------------------------
268 8 January 2016. Summary of changes for version 20160108:
270 1) ACPICA kernel-resident subsystem:
272 Updated all ACPICA copyrights and signons to 2016: Added the 2016
273 copyright to all source code module headers and utility/tool signons.
274 This includes the standard Linux dual-license header. This affects
275 virtually every file in the ACPICA core subsystem, iASL compiler, all
276 ACPICA utilities, and the ACPICA test suite.
278 Fixed a regression introduced in version 20151218 concerning the
279 execution of so-called module-level ASL/AML code. Namespace objects
280 created under a module-level If() construct were not properly/fully
281 entered into the namespace and could cause an interpreter fault when
284 Example Code and Data Size: These are the sizes for the OS-independent
285 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
286 debug version of the code includes the debug output trace mechanism and
287 has a much larger code and data size.
290 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
291 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
293 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
294 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
297 2) iASL Compiler/Disassembler and Tools:
299 Fixed a problem with the compilation of the GpioIo and GpioInt resource
300 descriptors. The _PIN field name was incorrectly defined to be an array
301 of 32-bit values, but the _PIN values are in fact 16 bits each. This
302 would cause incorrect bit width warnings when using Word (16-bit) fields
303 to access the descriptors.
306 ----------------------------------------
307 18 December 2015. Summary of changes for version 20151218:
309 1) ACPICA kernel-resident subsystem:
311 Implemented per-AML-table execution of "module-level code" as individual
312 ACPI tables are loaded into the namespace during ACPICA initialization.
313 In other words, any module-level code within an AML table is executed
314 immediately after the table is loaded, instead of batched and executed
315 after all of the tables have been loaded. This provides compatibility
316 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
319 To fully support the feature above, the default operation region handlers
320 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
321 installed before any ACPI tables are loaded. This enables module-level
322 code to access these address spaces during the table load and module-
323 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
326 Implemented several changes to the internal _REG support in conjunction
327 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
328 utilities for the changes above. Although these tools were changed, host
329 operating systems that simply use the default handlers for SystemMemory,
330 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
332 For example, in the code below, DEV1 is conditionally added to the
333 namespace by the DSDT via module-level code that accesses an operation
334 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
335 created immediately after the DSDT is loaded in order for the SSDT to
336 successfully reference DEV1. Previously, this code would cause an
337 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
338 fully supported by ACPICA.
340 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
342 OperationRegion (OPR1, SystemMemory, 0x400, 32)
343 Field (OPR1, AnyAcc, NoLock, Preserve)
354 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
356 External (\DEV1, DeviceObj)
362 Fixed an AML interpreter problem where control method invocations were
363 not handled correctly when the invocation was itself a SuperName argument
364 to another ASL operator. In these cases, the method was not invoked.
365 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
373 Signal, Release, Reset
376 Implemented automatic String-to-ObjectReference conversion support for
377 packages returned by predefined names (such as _DEP). A common BIOS error
378 is to add double quotes around an ObjectReference namepath, which turns
379 the reference into an unexpected string object. This support detects the
380 problem and corrects it before the package is returned to the caller that
381 invoked the method. Lv Zheng.
383 Implemented extensions to the Concatenate operator. Concatenate now
384 accepts any type of object, it is not restricted to simply
385 Integer/String/Buffer. For objects other than these 3 basic data types,
386 the argument is treated as a string containing the name of the object
387 type. This expands the utility of Concatenate and the Printf/Fprintf
388 macros. ACPICA BZ 1222.
390 Cleaned up the output of the ASL Debug object. The timer() value is now
391 optional and no longer emitted by default. Also, the basic data types of
392 Integer/String/Buffer are simply emitted as their values, without a data
393 type string -- since the data type is obvious from the output. ACPICA BZ
396 Example Code and Data Size: These are the sizes for the OS-independent
397 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
398 debug version of the code includes the debug output trace mechanism and
399 has a much larger code and data size.
402 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
403 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
405 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
406 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
409 2) iASL Compiler/Disassembler and Tools:
411 iASL: Fixed some issues with the ASL Include() operator. This operator
412 was incorrectly defined in the iASL parser rules, causing a new scope to
413 be opened for the code within the include file. This could lead to
414 several issues, including allowing ASL code that is technically illegal
415 and not supported by AML interpreters. Note, this does not affect the
416 related #include preprocessor operator. ACPICA BZ 1212.
418 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
419 operator is essentially an ASL macro since there is no AML opcode
420 associated with it. The code emitted by the iASL compiler for ElseIf is
421 an Else opcode followed immediately by an If opcode. The disassembler
422 will now emit an ElseIf if it finds an Else immediately followed by an
423 If. This simplifies the decoded ASL, especially for deeply nested
424 If..Else and large Switch constructs. Thus, the disassembled code more
425 closely follows the original source ASL. ACPICA BZ 1211. Example:
437 ElseIf (Arg0 == 0x02)
442 AcpiExec: Added support for the new module level code behavior and the
443 early region installation. This required a small change to the
444 initialization, since AcpiExec must install its own operation region
447 AcpiExec: Added support to make the debug object timer optional. Default
448 is timer disabled. This cleans up the debug object output -- the timer
451 AcpiExec: Multiple ACPI tables are now loaded in the order that they
452 appear on the command line. This can be important when there are
453 interdependencies/references between the tables.
455 iASL/Templates. Add support to generate template files with multiple
456 SSDTs within a single output file. Also added ommand line support to
457 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
461 ----------------------------------------
462 24 November 2015. Summary of changes for version 20151124:
464 1) ACPICA kernel-resident subsystem:
466 Fixed a possible regression for a previous update to FADT handling. The
467 FADT no longer has a fixed table ID, causing some issues with code that
468 was hardwired to a specific ID. Lv Zheng.
470 Fixed a problem where the method auto-serialization could interfere with
471 the current SyncLevel. This change makes the auto-serialization support
472 transparent to the SyncLevel support and management.
474 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
475 interface is intended for early access to the namespace during the
476 initial namespace device discovery walk. The _SUB method has been seen to
477 access operation regions in some cases, causing errors because the
478 operation regions are not fully initialized.
480 AML Debugger: Fixed some issues with the terminate/quit/exit commands
481 that can cause faults. Lv Zheng.
483 AML Debugger: Add thread ID support so that single-step mode only applies
484 to the AML Debugger thread. This prevents runtime errors within some
487 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
488 methods that are invoked by this interface are optional, removed warnings
489 emitted for the case where one or more of these methods do not exist.
490 ACPICA BZ 1208, original change by Prarit Bhargava.
492 Made a major pass through the entire ACPICA source code base to
493 standardize formatting that has diverged a bit over time. There are no
494 functional changes, but this will of course cause quite a few code
495 differences from the previous ACPICA release.
497 Example Code and Data Size: These are the sizes for the OS-independent
498 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
499 debug version of the code includes the debug output trace mechanism and
500 has a much larger code and data size.
503 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
504 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
506 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
507 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
510 2) iASL Compiler/Disassembler and Tools:
512 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
513 definition blocks within a single ASL file and the resulting AML file.
514 Support for this type of file was also added to the various tools that
515 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
516 example code below shows two definition blocks within the same file:
518 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
522 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
526 iASL: Enhanced typechecking for the Name() operator. All expressions for
527 the value of the named object must be reduced/folded to a single constant
528 at compile time, as per the ACPI specification (the AML definition of
531 iASL: Fixed some code indentation issues for the -ic and -ia options (C
532 and assembly headers). Now all emitted code correctly begins in column 1.
534 iASL: Added an error message for an attempt to open a Scope() on an
535 object defined in an SSDT. The DSDT is always loaded into the namespace
536 first, so any attempt to open a Scope on an SSDT object will fail at
540 ----------------------------------------
541 30 September 2015. Summary of changes for version 20150930:
543 1) ACPICA kernel-resident subsystem:
545 Debugger: Implemented several changes and bug fixes to assist support for
546 the in-kernel version of the AML debugger. Lv Zheng.
547 - Fix the "predefined" command for in-kernel debugger.
548 - Do not enter debug command loop for the help and version commands.
549 - Disallow "execute" command during execution/single-step of a method.
551 Interpreter: Updated runtime typechecking for all operators that have
552 target operands. The operand is resolved and validated that it is legal.
553 For example, the target cannot be a non-data object such as a Device,
554 Mutex, ThermalZone, etc., as per the ACPI specification.
556 Debugger: Fixed the double-mutex user I/O handshake to work when local
557 deadlock detection is enabled.
559 Debugger: limited display of method locals and arguments (LocalX and
560 ArgX) to only those that have actually been initialized. This prevents
561 lines of extraneous output.
563 Updated the definition of the NFIT table to correct the bit polarity of
564 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
566 Example Code and Data Size: These are the sizes for the OS-independent
567 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
568 debug version of the code includes the debug output trace mechanism and
569 has a much larger code and data size.
572 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
573 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
575 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
576 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
579 2) iASL Compiler/Disassembler and Tools:
581 iASL: Improved the compile-time typechecking for operands of many of the
584 -- Added an option to disable compiler operand/operator typechecking (-
587 -- For the following operators, the TermArg operands are now validated
588 when possible to be Integer data objects: BankField, OperationRegion,
589 DataTableRegion, Buffer, and Package.
591 -- Store (Source, Target): Both the source and target operands are
592 resolved and checked that the operands are both legal. For example,
593 neither operand can be a non-data object such as a Device, Mutex,
594 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
595 operator can be used to store an object to any type of target object.
597 -- Store (Source, Target): If the source is a Package object, the target
598 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
599 is a Package, the source must also be a Package.
601 -- Store (Source, Target): A warning is issued if the source and target
602 resolve to the identical named object.
604 -- Store (Source, <method invocation>): An error is generated for the
605 target method invocation, as this construct is not supported by the AML
608 -- For all ASL math and logic operators, the target operand must be a
609 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
610 includes the function return value also.
612 -- External declarations are also included in the typechecking where
613 possible. External objects defined using the UnknownObj keyword cannot be
614 typechecked, however.
616 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
618 - Legacy code: Index(PKG1, 3)
619 - New ASL+ code: PKG1[3]
620 This completes the ACPI 6.0 ASL+ support as it was the only operator not
623 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
624 spaces were inadvertently appended to the filename, causing file access
625 and deletion problems on some systems.
627 ASL Test Suite (ASLTS): Updated the master makefile to generate all
628 possible compiler output files when building the test suite -- thus
629 exercising these features of the compiler. These files are automatically
630 deleted when the test suite exits.
633 ----------------------------------------
634 18 August 2015. Summary of changes for version 20150818:
636 1) ACPICA kernel-resident subsystem:
638 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
639 Zheng. ACPICA BZ 1186.
641 Completed development to ensure that the ACPICA Disassembler and Debugger
642 are fully standalone components of ACPICA. Removed cross-component
643 dependences. Lv Zheng.
645 The max-number-of-AML-loops is now runtime configurable (previously was
646 compile-time only). This is essentially a loop timeout to force-abort
647 infinite AML loops. ACPCIA BZ 1192.
649 Debugger: Cleanup output to dump ACPI names and namepaths without any
650 trailing underscores. Lv Zheng. ACPICA BZ 1135.
652 Removed unnecessary conditional compilations across the Debugger and
653 Disassembler components where entire modules could be left uncompiled.
655 The aapits test is deprecated and has been removed from the ACPICA git
656 tree. The test has never been completed and has not been maintained, thus
657 becoming rather useless. ACPICA BZ 1015, 794.
659 A batch of small changes to close bugzilla and other reports:
660 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
661 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
662 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
663 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
665 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
667 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
669 - Debugger: Split debugger initialization/termination interfaces. Lv
671 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
673 - AcpiExec: Add debug message during _REG method phase during table
675 - AcpiNames: Fix a regression where some output was missing and no longer
677 - Debugger: General cleanup and simplification. Lv Zheng.
678 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
680 Example Code and Data Size: These are the sizes for the OS-independent
681 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
682 debug version of the code includes the debug output trace mechanism and
683 has a much larger code and data size.
686 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
687 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
689 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
690 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
693 2) iASL Compiler/Disassembler and Tools:
695 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
696 were not handled properly and caused load errors. Now, properly invoke
697 and use the ACPICA auto-reallocate mechanism for ACPI table data
698 structures. ACPICA BZ 1188
700 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
703 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
704 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
705 executed during initialization. ACPICA BZ 1187, 1189.
707 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
708 that corresponds to each disassembled ASL statement, to simplify
709 debugging. ACPICA BZ 1191.
711 Debugger: Add option to the "objects" command to display a summary of the
712 current namespace objects (Object type and count). This is displayed if
713 the command is entered with no arguments.
715 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
718 ----------------------------------------
719 17 July 2015. Summary of changes for version 20150717:
721 1) ACPICA kernel-resident subsystem:
723 Improved the partitioning between the Debugger and Disassembler
724 components. This allows the Debugger to be used standalone within kernel
725 code without the Disassembler (which is used for single stepping also).
726 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
728 Debugger: Implemented a new command to trace the execution of control
729 methods (Trace). This is especially useful for the in-kernel version of
730 the debugger when file I/O may not be available for method trace output.
731 See the ACPICA reference for more information. Lv Zheng.
733 Moved all C library prototypes (used for the local versions of these
734 functions when requested) to a new header, acclib.h
735 Cleaned up the use of non-ANSI C library functions. These functions are
736 implemented locally in ACPICA. Moved all such functions to a common
737 source file, utnonansi.c
739 Debugger: Fixed a problem with the "!!" command (get last command
740 executed) where the debugger could enter an infinite loop and eventually
743 Removed the use of local macros that were used for some of the standard C
744 library functions to automatically cast input parameters. This mostly
745 affected the is* functions where the input parameter is defined to be an
746 int. This required a few modifications to the main ACPICA source code to
747 provide casting for these functions and eliminate possible compiler
748 warnings for these parameters.
750 Across the source code, added additional status/error checking to resolve
751 issues discovered by static source code analysis tools such as Coverity.
753 Example Code and Data Size: These are the sizes for the OS-independent
754 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
755 debug version of the code includes the debug output trace mechanism and
756 has a much larger code and data size.
759 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
760 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
762 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
763 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
766 2) iASL Compiler/Disassembler and Tools:
768 iASL: Fixed a regression where the device map file feature no longer
769 worked properly when used in conjunction with the disassembler. It only
770 worked properly with the compiler itself.
772 iASL: Implemented a new warning for method LocalX variables that are set
773 but never used (similar to a C compiler such as gcc). This also applies
774 to ArgX variables that are not defined by the parent method, and are
775 instead (legally) used as local variables.
777 iASL/Preprocessor: Finished the pass-through of line numbers from the
778 preprocessor to the compiler. This ensures that compiler errors/warnings
779 have the correct original line numbers and filenames, regardless of any
782 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
783 pass-through of comments to the preprocessor output file (which becomes
784 the compiler input file). Also fixed a problem with // comments that
785 appear after a math expression.
787 iASL: Added support for the TCPA server table to the table compiler and
788 template generator. (The client table was already previously supported)
790 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
791 identify the iASL compiler.
793 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
794 multiple times. The new names are ACPI_SIGN_NEGATIVE and
797 AcpiHelp: Update to expand help messages for the iASL preprocessor
801 ----------------------------------------
802 19 June 2015. Summary of changes for version 20150619:
804 Two regressions in version 20150616 have been addressed:
806 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
807 etc.) This update changes ACPICA to only use the standard headers for
808 functions, or the prototypes for the local versions of the C library
809 functions. Across the source code, this required some additional casts
810 for some Clib invocations for portability. Moved all local prototypes to
813 Fixes several problems with recent changes to the handling of the FACS
814 table that could cause some systems not to boot.
817 ----------------------------------------
818 16 June 2015. Summary of changes for version 20150616:
821 1) ACPICA kernel-resident subsystem:
823 Across the entire ACPICA source code base, the various macros for the C
824 library functions (such as ACPI_STRLEN, etc.) have been removed and
825 replaced by the standard C library names (strlen, etc.) The original
826 purpose for these macros is no longer applicable. This simplification
827 reduces the number of macros used in the ACPICA source code
828 significantly, improving readability and maintainability.
830 Implemented support for a new ACPI table, the OSDT. This table, the
831 "override" SDT, can be loaded directly by the host OS at boot time. It
832 enables the replacement of existing namespace objects that were installed
833 via the DSDT and/or SSDTs. The primary purpose for this is to replace
834 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
835 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
838 Added support for systems with (improperly) two FACS tables -- a "32-bit"
839 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
840 X field). This change will support both automatically. There continues to
841 be systems found with this issue. This support requires a change to the
842 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
843 been added to allow the host to select which FACS is desired
844 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
847 Added a new feature to allow for systems that do not contain an FACS.
848 Although this is already supported on hardware-reduced platforms, the
849 feature has been extended for all platforms. The reasoning is that we do
850 not want to abort the entire ACPICA initialization just because the
851 system is seriously buggy and has no FACS.
853 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
854 not correctly transcribed from the ACPI specification in ACPICA version
857 Implemented support for the _CLS object in the AcpiGetObjectInfo external
860 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
861 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
862 compiler also updated. Note: The TCPA "server" table is not supported by
863 the disassembler/table-compiler at this time.
865 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
867 Example Code and Data Size: These are the sizes for the OS-independent
868 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
869 debug version of the code includes the debug output trace mechanism and
870 has a much larger code and data size.
873 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
874 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
876 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
877 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
880 2) iASL Compiler/Disassembler and Tools:
882 Disassembler: Fixed a problem with the new symbolic operator disassembler
883 where incorrect ASL code could be emitted in some cases for the "non-
884 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
885 ShiftRight. The actual problem cases seem to be rather unusual in common
886 ASL code, however. David Box.
888 Modified the linux version of acpidump to obtain ACPI tables from not
889 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
892 iASL: Fixed a problem where the user preprocessor output file (.i)
893 contained extra data that was not expected. The compiler was using this
894 file as a temporary file and passed through #line directives in order to
895 keep compiler error messages in sync with the input file and line number
896 across multiple include files. The (.i) is no longer a temporary file as
897 the compiler uses a new, different file for the original purpose.
899 iASL: Fixed a problem where comments within the original ASL source code
900 file were not passed through to the preprocessor output file, nor any
903 iASL: Fixed some issues for the handling of the "#include" preprocessor
904 directive and the similar (but not the same) "Include" ASL operator.
906 iASL: Add support for the new OSDT in both the disassembler and compiler.
908 iASL: Fixed a problem with the constant folding support where a Buffer
909 object could be incorrectly generated (incorrectly formed) during a
910 conversion to a Store() operator.
912 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
913 description text for the _REV predefined name. _REV now permanently
914 returns 2, as per the ACPI 6.0 specification.
916 Debugger: Enhanced the output of the Debug ASL object for references
917 produced by the Index operator. For Buffers and strings, only output the
918 actual byte pointed to by the index. For packages, only print the single
919 package element decoded by the index. Previously, the entire
920 buffer/string/package was emitted.
922 iASL/Table-compiler: Fixed a regression where the "generic" data types
923 were no longer recognized, causing errors.
926 ----------------------------------------
927 15 May 2015. Summary of changes for version 20150515:
929 This release implements most of ACPI 6.0 as described below.
931 1) ACPICA kernel-resident subsystem:
933 Implemented runtime argument checking and return value checking for all
934 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
935 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
937 Example Code and Data Size: These are the sizes for the OS-independent
938 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
939 debug version of the code includes the debug output trace mechanism and
940 has a much larger code and data size.
943 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
944 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
946 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
947 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
950 2) iASL Compiler/Disassembler and Tools:
952 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
953 names (argument count validation and return value typechecking.)
955 iASL disassembler and table compiler: implemented support for all new
956 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
958 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
961 iASL preprocessor: Added a new directive to enable inclusion of binary
962 blobs into ASL code. The new directive is #includebuffer. It takes a
963 binary file as input and emits a named ascii buffer object into the ASL
966 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
968 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
971 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
975 ----------------------------------------
976 10 April 2015. Summary of changes for version 20150410:
978 Reverted a change introduced in version 20150408 that caused
979 a regression in the disassembler where incorrect operator
980 symbols could be emitted.
983 ----------------------------------------
984 08 April 2015. Summary of changes for version 20150408:
987 1) ACPICA kernel-resident subsystem:
989 Permanently set the return value for the _REV predefined name. It now
990 returns 2 (was 5). This matches other ACPI implementations. _REV will be
991 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
992 for ACPI 2.0 and later. It should never be used to differentiate or
993 identify operating systems.
995 Added the "Windows 2015" string to the _OSI support. ACPICA will now
996 return TRUE to a query with this string.
998 Fixed several issues with the local version of the printf function.
1000 Added the C99 compiler option (-std=c99) to the Unix makefiles.
1003 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
1004 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
1006 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1007 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1010 2) iASL Compiler/Disassembler and Tools:
1012 iASL: Implemented an enhancement to the constant folding feature to
1013 transform the parse tree to a simple Store operation whenever possible:
1014 Add (2, 3, X) ==> is converted to: Store (5, X)
1015 X = 2 + 3 ==> is converted to: Store (5, X)
1017 Updated support for the SLIC table (Software Licensing Description Table)
1018 in both the Data Table compiler and the disassembler. The SLIC table
1019 support now conforms to "Microsoft Software Licensing Tables (SLIC and
1020 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
1021 following the ACPI header is now defined to be "Proprietary Data", and as
1022 such, can only be entered or displayed as a hex data block.
1024 Implemented full support for the MSDM table as described in the document
1025 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
1026 following the ACPI header is defined to be "Proprietary Data", and can
1027 only be entered or displayed as a hex data block.
1029 Implemented the -Pn option for the iASL Table Compiler (was only
1030 implemented for the ASL compiler). This option disables the iASL
1033 Disassembler: For disassembly of Data Tables, added a comment field
1034 around the Ascii equivalent data that is emitted as part of the "Raw
1035 Table Data" block. This prevents the iASL Preprocessor from possible
1036 confusion if/when the table is compiled.
1038 Disassembler: Added an option (-df) to force the disassembler to assume
1039 that the table being disassembled contains valid AML. This feature is
1040 useful for disassembling AML files that contain ACPI signatures other
1041 than DSDT or SSDT (such as OEMx or other signatures).
1043 Changes for the EFI version of the tools:
1044 1) Fixed a build error/issue
1045 2) Fixed a cast warning
1047 iASL: Fixed a path issue with the __FILE__ operator by making the
1048 directory prefix optional within the internal SplitInputFilename
1051 Debugger: Removed some unused global variables.
1053 Tests: Updated the makefile for proper generation of the AAPITS suite.
1056 ----------------------------------------
1057 04 February 2015. Summary of changes for version 20150204:
1059 ACPICA kernel-resident subsystem:
1061 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1062 copyright to all module headers and signons, including the standard Linux
1063 header. This affects virtually every file in the ACPICA core subsystem,
1064 iASL compiler, all ACPICA utilities, and the test suites.
1066 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
1067 A raw gpe handling mechanism was created to allow better handling of GPE
1068 storms that aren't easily managed by the normal handler. The raw handler
1069 allows disabling/renabling of the the GPE so that interrupt storms can be
1070 avoided in cases where events cannot be timely serviced. In this
1071 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
1072 GPE. This API will leave the reference counts undisturbed, thereby
1073 preventing unintentional clearing of the GPE when the intent in only to
1074 temporarily disable it. Raw handlers allow enabling and disabling of a
1075 GPE by removing GPE register locking. As such, raw handlers much provide
1076 their own locks while using GPE API's to protect access to GPE data
1080 Events: Always modify GPE registers under the GPE lock.
1081 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
1082 values. Reported as bug by joe.liu@apple.com.
1084 Unix makefiles: Separate option to disable optimizations and
1085 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
1086 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
1087 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
1088 errors when building ACPICA. This allows disabling the option without
1089 also having to disable optimazations.
1093 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1094 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
1097 --------------------------------------
1098 07 November 2014. Summary of changes for version 20141107:
1100 This release is available at https://acpica.org/downloads
1102 This release introduces and implements language extensions to ASL that
1103 provide support for symbolic ("C-style") operators and expressions. These
1104 language extensions are known collectively as ASL+.
1107 1) iASL Compiler/Disassembler and Tools:
1109 Disassembler: Fixed a problem with disassembly of the UartSerialBus
1110 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
1113 Disassembler: Fixed the Unicode macro support to add escape sequences.
1114 All non-printable ASCII values are emitted as escape sequences, as well
1115 as the standard escapes for quote and backslash. Ensures that the
1116 disassembled macro can be correctly recompiled.
1118 iASL: Added Printf/Fprintf macros for formatted output. These macros are
1119 translated to existing AML Concatenate and Store operations. Printf
1120 writes to the ASL Debug object. Fprintf allows the specification of an
1121 ASL name as the target. Only a single format specifier is required, %o,
1122 since the AML interpreter dynamically converts objects to the required
1125 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1126 (Concatenate (Concatenate (Concatenate ("", Arg0),
1127 ": Unexpected value for "), Arg1), ", "), Arg2),
1128 " at line "), Arg3), Debug)
1130 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
1131 Arg0, Arg1, Arg2, Arg3)
1133 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1134 ("", Arg1), ": "), Arg0), " Successful"), STR1)
1136 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
1138 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
1139 ASL parse tree before the AML code is generated. This allows blocks of
1140 ASL code to be removed in order to help locate and identify problem
1141 devices and/or code. David E. Box.
1143 AcpiExec: Added support (-fi) for an optional namespace object
1144 initialization file. This file specifies initial values for namespace
1145 objects as necessary for debugging and testing different ASL code paths
1146 that may be taken as a result of BIOS options.
1149 2) Overview of symbolic operator support for ASL (ASL+)
1150 -------------------------------------------------------
1152 As an extension to the ASL language, iASL implements support for symbolic
1153 (C-style) operators for math and logical expressions. This can greatly
1154 simplify ASL code as well as improve both readability and
1155 maintainability. These language extensions can exist concurrently with
1156 all legacy ASL code and expressions.
1158 The symbolic extensions are 100% compatible with existing AML
1159 interpreters, since no new AML opcodes are created. To implement the
1160 extensions, the iASL compiler transforms the symbolic expressions into
1161 the legacy ASL/AML equivalents at compile time.
1163 Full symbolic expressions are supported, along with the standard C
1164 precedence and associativity rules.
1166 Full disassembler support for the symbolic expressions is provided, and
1167 creates an automatic migration path for existing ASL code to ASL+ code
1168 via the disassembly process. By default, the disassembler now emits ASL+
1169 code with symbolic expressions. An option (-dl) is provided to force the
1170 disassembler to emit legacy ASL code if desired.
1172 Below is the complete list of the currently supported symbolic operators
1173 with examples. See the iASL User Guide for additional information.
1176 ASL+ Syntax Legacy ASL Equivalent
1177 ----------- ---------------------
1181 Z = X + Y Add (X, Y, Z)
1182 Z = X - Y Subtract (X, Y, Z)
1183 Z = X * Y Multiply (X, Y, Z)
1184 Z = X / Y Divide (X, Y, , Z)
1185 Z = X % Y Mod (X, Y, Z)
1186 Z = X << Y ShiftLeft (X, Y, Z)
1187 Z = X >> Y ShiftRight (X, Y, Z)
1188 Z = X & Y And (X, Y, Z)
1189 Z = X | Y Or (X, Y, Z)
1190 Z = X ^ Y Xor (X, Y, Z)
1195 // Logical operators
1197 (X == Y) LEqual (X, Y)
1198 (X != Y) LNotEqual (X, Y)
1199 (X < Y) LLess (X, Y)
1200 (X > Y) LGreater (X, Y)
1201 (X <= Y) LLessEqual (X, Y)
1202 (X >= Y) LGreaterEqual (X, Y)
1203 (X && Y) LAnd (X, Y)
1207 // Assignment and compound assignment operations
1210 X += Y Add (X, Y, X)
1211 X -= Y Subtract (X, Y, X)
1212 X *= Y Multiply (X, Y, X)
1213 X /= Y Divide (X, Y, , X)
1214 X %= Y Mod (X, Y, X)
1215 X <<= Y ShiftLeft (X, Y, X)
1216 X >>= Y ShiftRight (X, Y, X)
1217 X &= Y And (X, Y, X)
1219 X ^= Y Xor (X, Y, X)
1226 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
1227 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
1229 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
1231 And (MEMB, 0xFFFFFFF0, SRMB)
1232 Store (MEMB, Local2)
1233 Store (PDBM, Local1)
1234 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
1236 Or (PDBM, 0x02, PDBM)
1240 If (((R510 & 0x03FB) == 0x02E0) ||
1241 ((R520 & 0x03FB) == 0x02E0) ||
1242 ((R530 & 0x03FB) == 0x02E0) ||
1243 ((R540 & 0x03FB) == 0x02E0))
1245 SRMB = (MEMB & 0xFFFFFFF0)
1248 PDBM &= 0xFFFFFFFFFFFFFFF9
1254 Store (0x1234, Local1)
1255 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
1256 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
1257 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
1258 Store (Index (PKG1, 0x03), Local6)
1259 Store (Add (Local3, Local2), Debug)
1260 Add (Local1, 0x0F, Local2)
1261 Add (Local1, Multiply (Local2, Local3), Local2)
1262 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
1266 Local3 = (((Local1 + TEST) + 0x20) * Local2)
1267 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
1268 Local3 = (Local1 + (TEST + (0x20 * Local2)))
1269 Local6 = Index (PKG1, 0x03)
1270 Debug = (Local3 + Local2)
1271 Local2 = (Local1 + 0x0F)
1272 Local2 = (Local1 + (Local2 * Local3))
1273 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
1276 ----------------------------------------
1277 26 September 2014. Summary of changes for version 20140926:
1279 1) ACPICA kernel-resident subsystem:
1281 Updated the GPIO operation region handler interface (GeneralPurposeIo).
1282 In order to support GPIO Connection objects with multiple pins, along
1283 with the related Field objects, the following changes to the interface
1284 have been made: The Address is now defined to be the offset in bits of
1285 the field unit from the previous invocation of a Connection. It can be
1286 viewed as a "Pin Number Index" into the connection resource descriptor.
1287 The BitWidth is the exact bit width of the field. It is usually one bit,
1288 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
1289 additional information and examples.
1291 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
1292 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
1293 by the firmware), so that they cannot fire until they are enabled via
1294 AcpiUpdateAllGpes. Rafael J. Wysocki.
1296 Added a new return flag for the Event/GPE status interfaces --
1297 AcpiGetEventStatus and AcpiGetGpeStatus. The new
1298 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
1299 GPE currently has a handler associated with it, and can thus actually
1300 affect the system. Lv Zheng.
1302 Example Code and Data Size: These are the sizes for the OS-independent
1303 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1304 debug version of the code includes the debug output trace mechanism and
1305 has a much larger code and data size.
1308 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1309 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1311 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1312 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1314 2) iASL Compiler/Disassembler and Tools:
1316 iASL: Fixed a memory allocation/free regression introduced in 20140828
1317 that could cause the compiler to crash. This was introduced inadvertently
1318 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
1321 iASL: Removed two error messages that have been found to create false
1322 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
1323 1) Illegal forward reference within a method
1324 2) Illegal reference across two methods
1326 iASL: Implemented a new option (-lm) to create a hardware mapping file
1327 that summarizes all GPIO, I2C, SPI, and UART connections. This option
1328 works for both the compiler and disassembler. See the iASL compiler user
1329 guide for additional information and examples (section 6.4.6).
1331 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
1332 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
1333 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
1335 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
1336 unless STDIN is actually a terminal. Assists with batch-mode processing.
1339 Disassembler/AcpiHelp: Added another large group of recognized _HID
1343 ----------------------------------------
1344 28 August 2014. Summary of changes for version 20140828:
1346 1) ACPICA kernel-resident subsystem:
1348 Fixed a problem related to the internal use of the Timer() operator where
1349 a 64-bit divide could cause an attempted link to a double-precision math
1350 library. This divide is not actually necessary, so the code was
1351 restructured to eliminate it. Lv Zheng.
1353 ACPI 5.1: Added support for the runtime validation of the _DSD package
1354 (similar to the iASL support).
1356 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
1357 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
1359 Example Code and Data Size: These are the sizes for the OS-independent
1360 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1361 debug version of the code includes the debug output trace mechanism and
1362 has a much larger code and data size.
1365 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1366 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1368 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
1369 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1371 2) iASL Compiler/Disassembler and Tools:
1373 AcpiExec: Fixed a problem on unix systems where the original terminal
1374 state was not always properly restored upon exit. Seen when using the -v
1375 option. ACPICA BZ 1104.
1377 iASL: Fixed a problem with the validation of the ranges/length within the
1378 Memory24 resource descriptor. There was a boundary condition when the
1379 range was equal to the (length -1) caused by the fact that these values
1380 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
1382 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
1384 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
1386 now supported properly.
1388 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
1389 in the disassembler, data table compiler, and table template generator.
1391 iASL: Added a requirement for Device() objects that one of either a _HID
1392 or _ADR must exist within the scope of a Device, as per the ACPI
1393 specification. Remove a similar requirement that was incorrectly in place
1394 for the _DSD object.
1396 iASL: Added error detection for illegal named references within control
1397 methods that would cause runtime failures. Now trapped as errors are: 1)
1398 References to objects within a non-parent control method. 2) Forward
1399 references (within a method) -- for control methods, AML interpreters use
1400 a one-pass parse of control methods. ACPICA BZ 1008.
1402 iASL: Added error checking for dependencies related to the _PSx power
1403 methods. ACPICA BZ 1029.
1404 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
1406 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
1409 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
1410 deploying the existing object and string caches and adding new caches for
1413 iASL: Split the huge parser source file into multiple subfiles to improve
1414 manageability. Generation now requires the M4 macro preprocessor, which
1415 is part of the Bison distribution on both unix and windows platforms.
1417 AcpiSrc: Fixed and removed all extraneous warnings generated during
1418 entire ACPICA source code scan and/or conversion.
1421 ----------------------------------------
1423 24 July 2014. Summary of changes for version 20140724:
1425 The ACPI 5.1 specification has been released and is available at:
1426 http://uefi.org/specs/access
1429 0) ACPI 5.1 support in ACPICA:
1431 ACPI 5.1 is fully supported in ACPICA as of this release.
1433 New predefined names. Support includes iASL and runtime ACPICA
1435 _CCA (Cache Coherency Attribute).
1436 _DSD (Device-Specific Data). David Box.
1438 Modifications to existing ACPI tables. Support includes headers, iASL
1439 Data Table compiler, disassembler, and the template generator.
1440 FADT - New fields and flags. Graeme Gregory.
1441 GTDT - One new subtable and new fields. Tomasz Nowicki.
1442 MADT - Two new subtables. Tomasz Nowicki.
1443 PCCT - One new subtable.
1446 New notification type for System Resource Affinity change events.
1449 1) ACPICA kernel-resident subsystem:
1451 Fixed a regression introduced in 20140627 where a fault can happen during
1452 the deletion of Alias AML namespace objects. The problem affected both
1453 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
1455 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
1456 simple mechanism to enable wake GPEs that have no associated handler or
1457 control method. Rafael Wysocki.
1459 Updated the AcpiEnableGpe interface to disallow the enable if there is no
1460 handler or control method associated with the particular GPE. This will
1461 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
1463 Updated GPE handling and dispatch by disabling the GPE before clearing
1464 the status bit for edge-triggered GPEs. Lv Zheng.
1466 Added Timer() support to the AML Debug object. The current timer value is
1467 now displayed with each invocation of (Store to) the debug object to
1468 enable simple generation of execution times for AML code (method
1469 execution for example.) ACPICA BZ 1093.
1471 Example Code and Data Size: These are the sizes for the OS-independent
1472 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1473 debug version of the code includes the debug output trace mechanism and
1474 has a much larger code and data size.
1477 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
1478 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1480 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1481 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1484 2) iASL Compiler/Disassembler and Tools:
1486 Fixed an issue with the recently added local printf implementation,
1487 concerning width/precision specifiers that could cause incorrect output.
1488 Lv Zheng. ACPICA BZ 1094.
1490 Disassembler: Added support to detect buffers that contain UUIDs and
1491 disassemble them to an invocation of the ToUUID operator. Also emit
1492 commented descriptions of known ACPI-related UUIDs.
1494 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
1495 -u. Adds three new files.
1497 iASL: Update table compiler and disassembler for DMAR table changes that
1498 were introduced in September 2013. With assistance by David Woodhouse.
1500 ----------------------------------------
1501 27 June 2014. Summary of changes for version 20140627:
1503 1) ACPICA kernel-resident subsystem:
1505 Formatted Output: Implemented local versions of standard formatted output
1506 utilities such as printf, etc. Over time, it has been discovered that
1507 there are in fact many portability issues with printf, and the addition
1508 of this feature will fix/prevent these issues once and for all. Some
1509 known issues are summarized below:
1511 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
1512 for the Linux kernel and is %uI64 for some MSVC versions.
1513 2) Invoking printf consistently in a manner that is portable across both
1514 32-bit and 64-bit platforms is difficult at best in many situations.
1515 3) The output format for pointers varies from system to system (leading
1516 zeros especially), and leads to inconsistent output from ACPICA across
1518 4) Certain platform-specific printf formats may conflict with ACPICA use.
1519 5) If there is no local C library available, ACPICA now has local support
1522 -- To address these printf issues in a complete manner, ACPICA now
1523 directly implements a small subset of printf format specifiers, only
1524 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
1526 Implemented support for ACPICA generation within the EFI environment.
1527 Initially, the AcpiDump utility is supported in the UEFI shell
1528 environment. Lv Zheng.
1530 Added a new external interface, AcpiLogError, to improve ACPICA
1531 portability. This allows the host to redirect error messages from the
1532 ACPICA utilities. Lv Zheng.
1534 Added and deployed new OSL file I/O interfaces to improve ACPICA
1542 There are C library implementations of these functions in the new file
1543 service_layers/oslibcfs.c -- however, the functions can be implemented by
1544 the local host in any way necessary. Lv Zheng.
1546 Implemented a mechanism to disable/enable ACPI table checksum validation
1547 at runtime. This can be useful when loading tables very early during OS
1548 initialization when it may not be possible to map the entire table in
1549 order to compute the checksum. Lv Zheng.
1551 Fixed a buffer allocation issue for the Generic Serial Bus support.
1552 Originally, a fixed buffer length was used. This change allows for
1553 variable-length buffers based upon the protocol indicated by the field
1554 access attributes. Reported by Lan Tianyu. Lv Zheng.
1556 Fixed a problem where an object detached from a namespace node was not
1557 properly terminated/cleared and could cause a circular list problem if
1558 reattached. ACPICA BZ 1063. David Box.
1560 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
1562 Fixed a possible memory leak in an error return path within the function
1563 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
1565 Example Code and Data Size: These are the sizes for the OS-independent
1566 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1567 debug version of the code includes the debug output trace mechanism and
1568 has a much larger code and data size.
1571 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1572 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1574 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1575 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1578 2) iASL Compiler/Disassembler and Tools:
1580 Disassembler: Add dump of ASCII equivalent text within a comment at the
1581 end of each line of the output for the Buffer() ASL operator.
1583 AcpiDump: Miscellaneous changes:
1584 Fixed repetitive table dump in -n mode.
1585 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
1586 the ACPI 2.0 GUID fails.
1588 iASL: Fixed a problem where the compiler could fault if incorrectly given
1589 an acpidump output file as input. ACPICA BZ 1088. David Box.
1591 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
1592 they are invoked without any arguments.
1594 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
1595 1086. Colin Ian King.
1597 Disassembler: Cleaned up a block of code that extracts a parent Op
1598 object. Added a comment that explains that the parent is guaranteed to be
1599 valid in this case. ACPICA BZ 1069.
1602 ----------------------------------------
1603 24 April 2014. Summary of changes for version 20140424:
1605 1) ACPICA kernel-resident subsystem:
1607 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
1608 Some of these tables are known to contain a trailing NULL entry. Lv
1611 Removed an extraneous error message for the case where there are a large
1612 number of system GPEs (> 124). This was the "32-bit FADT register is too
1613 long to convert to GAS struct" message, which is irrelevant for GPEs
1614 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
1615 (limited capacity) GAS bit length. Also, several changes to ensure proper
1616 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
1619 Implemented and deployed additional configuration support for the public
1620 ACPICA external interfaces. Entire classes of interfaces can now be
1621 easily modified or configured out, replaced by stubbed inline functions
1622 by default. Lv Zheng.
1624 Moved all public ACPICA runtime configuration globals to the public
1625 ACPICA external interface file for convenience. Also, removed some
1626 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
1628 Documentation: Added a new section to the ACPICA reference describing the
1629 maximum number of GPEs that can be supported by the FADT-defined GPEs in
1630 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
1633 Example Code and Data Size: These are the sizes for the OS-independent
1634 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1635 debug version of the code includes the debug output trace mechanism and
1636 has a much larger code and data size.
1639 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1640 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1642 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1643 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1646 2) iASL Compiler/Disassembler and Tools:
1648 iASL and disassembler: Add full support for the LPIT table (Low Power
1649 Idle Table). Includes support in the disassembler, data table compiler,
1650 and template generator.
1653 1) Add option to force the use of the RSDT (over the XSDT).
1654 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
1656 iASL: Add check for predefined packages that are too large. For
1657 predefined names that contain subpackages, check if each subpackage is
1658 too large. (Check for too small already exists.)
1660 Debugger: Updated the GPE command (which simulates a GPE by executing the
1661 GPE code paths in ACPICA). The GPE device is now optional, and defaults
1662 to the GPE 0/1 FADT-defined blocks.
1664 Unix application OSL: Update line-editing support. Add additional error
1665 checking and take care not to reset terminal attributes on exit if they
1666 were never set. This should help guarantee that the terminal is always
1667 left in the previous state on program exit.
1670 ----------------------------------------
1671 25 March 2014. Summary of changes for version 20140325:
1673 1) ACPICA kernel-resident subsystem:
1675 Updated the auto-serialize feature for control methods. This feature
1676 automatically serializes all methods that create named objects in order
1677 to prevent runtime errors. The update adds support to ignore the
1678 currently executing AML SyncLevel when invoking such a method, in order
1679 to prevent disruption of any existing SyncLevel priorities that may exist
1680 in the AML code. Although the use of SyncLevels is relatively rare, this
1681 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
1682 appear on some machines starting with the 20140214 release.
1684 Added a new external interface to allow the host to install ACPI tables
1685 very early, before the namespace is even created. AcpiInstallTable gives
1686 the host additional flexibility for ACPI table management. Tables can be
1687 installed directly by the host as if they had originally appeared in the
1688 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
1689 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
1690 with additional internal restructuring and cleanup. See the ACPICA
1691 Reference for interface details. Lv Zheng.
1693 Added validation of the checksum for all incoming dynamically loaded
1694 tables (via external interfaces or via AML Load/LoadTable operators). Lv
1697 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
1698 and GPE handler removal. Restructured calls to eliminate possible race
1699 conditions. Lv Zheng.
1701 Added a warning for the use/execution of the ASL/AML Unload (table)
1702 operator. This will help detect and identify machines that use this
1703 operator if and when it is ever used. This operator has never been seen
1704 in the field and the usage model and possible side-effects of the drastic
1705 runtime action of a full table removal are unknown.
1707 Reverted the use of #pragma push/pop which was introduced in the 20140214
1708 release. It appears that push and pop are not implemented by enough
1709 compilers to make the use of this feature feasible for ACPICA at this
1710 time. However, these operators may be deployed in a future ACPICA
1713 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
1716 Source code generation:
1717 1) Disabled the use of the "strchr" macro for the gcc-specific
1718 generation. For some versions of gcc, this macro can periodically expose
1719 a compiler bug which in turn causes compile-time error(s).
1720 2) Added support for PPC64 compilation. Colin Ian King.
1722 Example Code and Data Size: These are the sizes for the OS-independent
1723 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1724 debug version of the code includes the debug output trace mechanism and
1725 has a much larger code and data size.
1728 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1729 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1731 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1732 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1735 2) iASL Compiler/Disassembler and Tools:
1737 Disassembler: Added several new features to improve the readability of
1738 the resulting ASL code. Extra information is emitted within comment
1739 fields in the ASL code:
1740 1) Known _HID/_CID values are decoded to descriptive text.
1741 2) Standard values for the Notify() operator are decoded to descriptive
1743 3) Target operands are expanded to full pathnames (in a comment) when
1746 Disassembler: Miscellaneous updates for extern() handling:
1747 1) Abort compiler if file specified by -fe option does not exist.
1748 2) Silence unnecessary warnings about argument count mismatches.
1749 3) Update warning messages concerning unresolved method externals.
1750 4) Emit "UnknownObj" keyword for externals whose type cannot be
1754 1) Added the -a option to display both the ASL syntax and the AML
1755 encoding for an input ASL operator. This effectively displays all known
1756 information about an ASL operator with one AcpiHelp invocation.
1757 2) Added substring match support (similar to a wildcard) for the -i
1758 (_HID/PNP IDs) option.
1760 iASL/Disassembler: Since this tool does not yet support execution on big-
1761 endian machines, added detection of endianness and an error message if
1762 execution is attempted on big-endian. Support for big-endian within iASL
1763 is a feature that is on the ACPICA to-be-done list.
1766 1) Remove option to extract binary files from an acpidump; this function
1767 is made obsolete by the AcpiXtract utility.
1768 2) General cleanup of open files and allocated buffers.
1771 ----------------------------------------
1772 14 February 2014. Summary of changes for version 20140214:
1774 1) ACPICA kernel-resident subsystem:
1776 Implemented a new mechanism to proactively prevent problems with ill-
1777 behaved reentrant control methods that create named ACPI objects. This
1778 behavior is illegal as per the ACPI specification, but is nonetheless
1779 frequently seen in the field. Previously, this could lead to an
1780 AE_ALREADY_EXISTS exception if the method was actually entered by more
1781 than one thread. This new mechanism detects such methods at table load
1782 time and marks them "serialized" to prevent reentrancy. A new global
1783 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
1784 feature if desired. This mechanism and global option obsoletes and
1785 supersedes the previous AcpiGbl_SerializeAllMethods option.
1787 Added the "Windows 2013" string to the _OSI support. ACPICA will now
1788 respond TRUE to _OSI queries with this string. It is the stated policy of
1789 ACPICA to add new strings to the _OSI support as soon as possible after
1790 they are defined. See the full ACPICA _OSI policy which has been added to
1791 the utilities/utosi.c file.
1793 Hardened/updated the _PRT return value auto-repair code:
1794 1) Do not abort the repair on a single subpackage failure, continue to
1795 check all subpackages.
1796 2) Add check for the minimum subpackage length (4).
1797 3) Properly handle extraneous NULL package elements.
1799 Added support to avoid the possibility of infinite loops when traversing
1800 object linked lists. Never allow an infinite loop, even in the face of
1801 corrupted object lists.
1803 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
1804 pack(pop) directives to ensure that the ACPICA headers are independent of
1805 compiler settings or other host headers.
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: 96.5K Code, 27.2K Data, 123.7K Total
1814 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1816 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1817 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1820 2) iASL Compiler/Disassembler and Tools:
1822 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
1823 first reserved field was incorrectly forced to have a value of zero. This
1824 change correctly forces the field to have a value of one. ACPICA BZ 1081.
1826 Debugger: Added missing support for the "Extra" and "Data" subobjects
1827 when displaying object data.
1829 Debugger: Added support to display entire object linked lists when
1830 displaying object data.
1832 iASL: Removed the obsolete -g option to obtain ACPI tables from the
1833 Windows registry. This feature has been superseded by the acpidump
1837 ----------------------------------------
1838 14 January 2014. Summary of changes for version 20140114:
1840 1) ACPICA kernel-resident subsystem:
1842 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1843 copyright to all module headers and signons, including the standard Linux
1844 header. This affects virtually every file in the ACPICA core subsystem,
1845 iASL compiler, all ACPICA utilities, and the test suites.
1847 Improved parameter validation for AcpiInstallGpeBlock. Added the
1849 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
1850 2) There is not already a GPE block attached to the device.
1851 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
1854 Correctly support "references" in the ACPI_OBJECT. This change fixes the
1855 support to allow references (namespace nodes) to be passed as arguments
1856 to control methods via the evaluate object interface. This is probably
1857 most useful for testing purposes, however.
1859 Improved support for 32/64 bit physical addresses in printf()-like
1860 output. This change improves the support for physical addresses in printf
1861 debug statements and other output on both 32-bit and 64-bit hosts. It
1862 consistently outputs the appropriate number of bytes for each host. The
1863 %p specifier is unsatisfactory since it does not emit uniform output on
1864 all hosts/clib implementations (on some, leading zeros are not supported,
1865 leading to difficult-to-read output).
1867 Example Code and Data Size: These are the sizes for the OS-independent
1868 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1869 debug version of the code includes the debug output trace mechanism and
1870 has a much larger code and data size.
1873 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1874 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1876 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1877 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1880 2) iASL Compiler/Disassembler and Tools:
1882 iASL: Fix a possible fault when using the Connection() operator. Fixes a
1883 problem if the parent Field definition for the Connection operator refers
1884 to an operation region that does not exist. ACPICA BZ 1064.
1886 AcpiExec: Load of local test tables is now optional. The utility has the
1887 capability to load some various tables to test features of ACPICA.
1888 However, there are enough of them that the output of the utility became
1889 confusing. With this change, only the required local tables are displayed
1890 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
1891 line specification. This makes the default output simler and easier to
1892 understand. The -el command line option restores the original behavior
1893 for testing purposes.
1895 AcpiExec: Added support for overlapping operation regions. This change
1896 expands the simulation of operation regions by supporting regions that
1897 overlap within the given address space. Supports SystemMemory and
1898 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
1900 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
1901 allows AcpiExec to simulate these address spaces, similar to the current
1902 support for SystemMemory and SystemIO.
1904 Debugger: Added new command to read/write/compare all namespace objects.
1905 The command "test objects" will exercise the entire namespace by writing
1906 new values to each data object, and ensuring that the write was
1907 successful. The original value is then restored and verified.
1909 Debugger: Added the "test predefined" command. This change makes this
1910 test public and puts it under the new "test" command. The test executes
1911 each and every predefined name within the current namespace.
1914 ----------------------------------------
1915 18 December 2013. Summary of changes for version 20131218:
1917 Global note: The ACPI 5.0A specification was released this month. There
1918 are no changes needed for ACPICA since this release of ACPI is an
1919 errata/clarification release. The specification is available at
1923 1) ACPICA kernel-resident subsystem:
1925 Added validation of the XSDT root table if it is present. Some older
1926 platforms contain an XSDT that is ill-formed or otherwise invalid (such
1927 as containing some or all entries that are NULL pointers). This change
1928 adds a new function to validate the XSDT before actually using it. If the
1929 XSDT is found to be invalid, ACPICA will now automatically fall back to
1930 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
1931 ACPICA and enhanced by Lv Zheng and Bob Moore.
1933 Added a runtime option to ignore the XSDT and force the use of the RSDT.
1934 This change adds a runtime option that will force ACPICA to use the RSDT
1935 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
1936 requires that an XSDT be used instead of the RSDT, the XSDT has been
1937 found to be corrupt or ill-formed on some machines. Lv Zheng.
1939 Added a runtime option to favor 32-bit FADT register addresses over the
1940 64-bit addresses. This change adds an option to favor 32-bit FADT
1941 addresses when there is a conflict between the 32-bit and 64-bit versions
1942 of the same register. The default behavior is to use the 64-bit version
1943 in accordance with the ACPI specification. This can now be overridden via
1944 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
1946 During the change above, the internal "Convert FADT" and "Verify FADT"
1947 functions have been merged to simplify the code, making it easier to
1948 understand and maintain. ACPICA BZ 933.
1950 Improve exception reporting and handling for GPE block installation.
1951 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
1952 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
1954 Added helper macros to extract bus/segment numbers from the HEST table.
1955 This change adds two macros to extract the encoded bus and segment
1956 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
1957 Betty Dall <betty.dall@hp.com>
1959 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
1960 by ACPICA. It is not a public macro, so it should have no effect on
1961 existing OSV code. Lv Zheng.
1963 Example Code and Data Size: These are the sizes for the OS-independent
1964 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1965 debug version of the code includes the debug output trace mechanism and
1966 has a much larger code and data size.
1969 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1970 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1972 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1973 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1976 2) iASL Compiler/Disassembler and Tools:
1978 Disassembler: Improved pathname support for emitted External()
1979 statements. This change adds full pathname support for external names
1980 that have been resolved internally by the inclusion of additional ACPI
1981 tables (via the iASL -e option). Without this change, the disassembler
1982 can emit multiple externals for the same object, or it become confused
1983 when the Scope() operator is used on an external object. Overall, greatly
1984 improves the ability to actually recompile the emitted ASL code when
1985 objects a referenced across multiple ACPI tables. Reported by Michael
1986 Tsirkin (mst@redhat.com).
1988 Tests/ASLTS: Updated functional control suite to execute with no errors.
1989 David Box. Fixed several errors related to the testing of the interpreter
1990 slack mode. Lv Zheng.
1992 iASL: Added support to detect names that are declared within a control
1993 method, but are unused (these are temporary names that are only valid
1994 during the time the method is executing). A remark is issued for these
1995 cases. ACPICA BZ 1022.
1997 iASL: Added full support for the DBG2 table. Adds full disassembler,
1998 table compiler, and template generator support for the DBG2 table (Debug
2001 iASL: Added full support for the PCCT table, update the table definition.
2002 Updates the PCCT table definition in the actbl3.h header and adds table
2003 compiler and template generator support.
2005 iASL: Added an option to emit only error messages (no warnings/remarks).
2006 The -ve option will enable only error messages, warnings and remarks are
2007 suppressed. This can simplify debugging when only the errors are
2008 important, such as when an ACPI table is disassembled and there are many
2009 warnings and remarks -- but only the actual errors are of real interest.
2011 Example ACPICA code (source/tools/examples): Updated the example code so
2012 that it builds to an actual working program, not just example code. Added
2013 ACPI tables and execution of an example control method in the DSDT. Added
2014 makefile support for Unix generation.
2017 ----------------------------------------
2018 15 November 2013. Summary of changes for version 20131115:
2020 This release is available at https://acpica.org/downloads
2023 1) ACPICA kernel-resident subsystem:
2025 Resource Manager: Fixed loop termination for the "get AML length"
2026 function. The loop previously had an error termination on a NULL resource
2027 pointer, which can never happen since the loop simply increments a valid
2028 resource pointer. This fix changes the loop to terminate with an error on
2029 an invalid end-of-buffer condition. The problem can be seen as an
2030 infinite loop by callers to AcpiSetCurrentResources with an invalid or
2031 corrupted resource descriptor, or a resource descriptor that is missing
2032 an END_TAG descriptor. Reported by Dan Carpenter
2033 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
2035 Table unload and ACPICA termination: Delete all attached data objects
2036 during namespace node deletion. This fix updates namespace node deletion
2037 to delete the entire list of attached objects (attached via
2038 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
2039 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
2041 ACPICA termination: Added support to delete all objects attached to the
2042 root namespace node. This fix deletes any and all objects that have been
2043 attached to the root node via AcpiAttachData. Previously, none of these
2044 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
2046 Debug output: Do not emit the function nesting level for the in-kernel
2047 build. The nesting level is really only useful during a single-thread
2048 execution. Therefore, only enable this output for the AcpiExec utility.
2049 Also, only emit the thread ID when executing under AcpiExec (Context
2050 switches are still always detected and a message is emitted). ACPICA BZ
2053 Example Code and Data Size: These are the sizes for the OS-independent
2054 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2055 debug version of the code includes the debug output trace mechanism and
2056 has a much larger code and data size.
2059 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2060 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2062 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2063 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2066 2) iASL Compiler/Disassembler and Tools:
2068 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
2069 correct portable POSIX header for terminal control functions.
2071 Disassembler: Fixed control method invocation issues related to the use
2072 of the CondRefOf() operator. The problem is seen in the disassembly where
2073 control method invocations may not be disassembled properly if the
2074 control method name has been used previously as an argument to CondRefOf.
2075 The solution is to not attempt to emit an external declaration for the
2076 CondRefOf target (it is not necessary in the first place). This prevents
2077 disassembler object type confusion. ACPICA BZ 988.
2079 Unix Makefiles: Added an option to disable compiler optimizations and the
2080 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
2081 with optimizations (reportedly, gcc 4.4 for example). This change adds a
2082 command line option for make (NOOPT) that disables all compiler
2083 optimizations and the _FORTIFY_SOURCE compiler flag. The default
2084 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
2085 1034. Lv Zheng, Bob Moore.
2087 Tests/ASLTS: Added options to specify individual test cases and modes.
2088 This allows testers running aslts.sh to optionally specify individual
2089 test modes and test cases. Also added an option to disable the forced
2090 generation of the ACPICA tools from source if desired. Lv Zheng.
2092 ----------------------------------------
2093 27 September 2013. Summary of changes for version 20130927:
2095 This release is available at https://acpica.org/downloads
2098 1) ACPICA kernel-resident subsystem:
2100 Fixed a problem with store operations to reference objects. This change
2101 fixes a problem where a Store operation to an ArgX object that contained
2103 reference to a field object did not complete the automatic dereference
2105 then write to the actual field object. Instead, the object type of the
2106 field object was inadvertently changed to match the type of the source
2107 operand. The new behavior will actually write to the field object (buffer
2108 field or field unit), thus matching the correct ACPI-defined behavior.
2110 Implemented support to allow the host to redefine individual OSL
2111 prototypes. This change enables the host to redefine OSL prototypes found
2112 in the acpiosxf.h file. This allows the host to implement OSL interfaces
2113 with a macro or inlined function. Further, it allows the host to add any
2114 additional required modifiers such as __iomem, __init, __exit, etc., as
2115 necessary on a per-interface basis. Enables maximum flexibility for the
2116 OSL interfaces. Lv Zheng.
2118 Hardcoded the access width for the FADT-defined reset register. The ACPI
2119 specification requires the reset register width to be 8 bits. ACPICA now
2120 hardcodes the width to 8 and ignores the FADT width value. This provides
2121 compatibility with other ACPI implementations that have allowed BIOS code
2122 with bad register width values to go unnoticed. Matthew Garett, Bob
2126 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
2128 in the OSL header (acpiosxf). The change modifies the position of this
2129 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
2130 build issues if the OSL defines the implementation of the interface to be
2131 an inline stub function. Lv Zheng.
2133 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
2134 initialization interfaces. This change adds a new macro for the main init
2135 and terminate external interfaces in order to support hosts that require
2136 additional or different processing for these functions. Changed from
2137 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
2140 Cleaned up the memory allocation macros for configurability. In the
2142 case, the ACPI_ALLOCATE and related macros now resolve directly to their
2143 respective AcpiOs* OSL interfaces. Two options:
2144 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
2145 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2146 2) For AcpiExec (and for debugging), the macros can optionally be
2148 to the local ACPICA interfaces that track each allocation (local tracking
2149 is used to immediately detect memory leaks).
2152 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
2153 to predefine this macro to either TRUE or FALSE during the system build.
2155 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
2157 Example Code and Data Size: These are the sizes for the OS-independent
2158 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2159 debug version of the code includes the debug output trace mechanism and
2160 has a much larger code and data size.
2163 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2164 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2166 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2167 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2170 2) iASL Compiler/Disassembler and Tools:
2172 iASL: Implemented wildcard support for the -e option. This simplifies use
2173 when there are many SSDTs that must be included to resolve external
2175 declarations. ACPICA BZ 1041. Example:
2176 iasl -e ssdt*.dat -d dsdt.dat
2178 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
2179 adds a portable module that implements full history and limited line
2180 editing for Unix and Linux systems. It does not use readline() due to
2181 portability issues. Instead it uses the POSIX termio interface to put the
2182 terminal in raw input mode so that the various special keys can be
2184 (such as up/down-arrow for history support and left/right-arrow for line
2185 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
2187 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
2188 one or more spaces. This provides compatible with early or different
2189 versions of the AcpiDump utility. ACPICA BZ 1044.
2191 AcpiDump: Do not ignore tables that contain only an ACPI table header.
2192 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
2193 no other data. This change adds support to dump these tables. Any tables
2194 shorter than the length of an ACPI table header remain in error (an error
2195 message is emitted). Reported by Yi Li.
2197 Debugger: Echo actual command along with the "unknown command" message.
2199 ----------------------------------------
2200 23 August 2013. Summary of changes for version 20130823:
2202 1) ACPICA kernel-resident subsystem:
2204 Implemented support for host-installed System Control Interrupt (SCI)
2205 handlers. Certain ACPI functionality requires the host to handle raw
2206 SCIs. For example, the "SCI Doorbell" that is defined for memory power
2207 state support requires the host device driver to handle SCIs to examine
2208 if the doorbell has been activated. Multiple SCI handlers can be
2209 installed to allow for future expansion. New external interfaces are
2210 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
2211 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
2213 Operation region support: Never locally free the handler "context"
2214 pointer. This change removes some dangerous code that attempts to free
2215 the handler context pointer in some (rare) circumstances. The owner of
2216 the handler owns this pointer and the ACPICA code should never touch it.
2217 Although not seen to be an issue in any kernel, it did show up as a
2218 problem (fault) under AcpiExec. Also, set the internal storage field for
2219 the context pointer to zero when the region is deactivated, simply for
2220 sanity. David Box. ACPICA BZ 1039.
2222 AcpiRead: On error, do not modify the return value target location. If an
2223 error happens in the middle of a split 32/32 64-bit I/O operation, do not
2224 modify the target of the return value pointer. Makes the code consistent
2225 with the rest of ACPICA. Bjorn Helgaas.
2227 Example Code and Data Size: These are the sizes for the OS-independent
2228 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2229 debug version of the code includes the debug output trace mechanism and
2230 has a much larger code and data size.
2233 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2234 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2236 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2237 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
2240 2) iASL Compiler/Disassembler and Tools:
2242 AcpiDump: Implemented several new features and fixed some problems:
2243 1) Added support to dump the RSDP, RSDT, and XSDT tables.
2244 2) Added support for multiple table instances (SSDT, UEFI).
2245 3) Added option to dump "customized" (overridden) tables (-c).
2246 4) Fixed a problem where some table filenames were improperly
2248 5) Improved some error messages, removed some unnecessary messages.
2250 iASL: Implemented additional support for disassembly of ACPI tables that
2251 contain invocations of external control methods. The -fe<file> option
2252 allows the import of a file that specifies the external methods along
2253 with the required number of arguments for each -- allowing for the
2254 correct disassembly of the table. This is a workaround for a limitation
2255 of AML code where the disassembler often cannot determine the number of
2256 arguments required for an external control method and generates incorrect
2257 ASL code. See the iASL reference for details. ACPICA BZ 1030.
2259 Debugger: Implemented a new command (paths) that displays the full
2260 pathnames (namepaths) and object types of all objects in the namespace.
2261 This is an alternative to the namespace command.
2263 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
2264 mechanism and any installed handlers.
2266 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
2267 This can occur if there are too many parent prefixes in a namepath (for
2268 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
2270 Application OSLs: Set the return value for the PCI read functions. These
2271 functions simply return AE_OK, but should set the return value to zero
2272 also. This change implements this. ACPICA BZ 1038.
2274 Debugger: Prevent possible command line buffer overflow. Increase the
2275 size of a couple of the debugger line buffers, and ensure that overflow
2276 cannot happen. ACPICA BZ 1037.
2278 iASL: Changed to abort immediately on serious errors during the parsing
2279 phase. Due to the nature of ASL, there is no point in attempting to
2280 compile these types of errors, and they typically end up causing a
2281 cascade of hundreds of errors which obscure the original problem.
2283 ----------------------------------------
2284 25 July 2013. Summary of changes for version 20130725:
2286 1) ACPICA kernel-resident subsystem:
2288 Fixed a problem with the DerefOf operator where references to FieldUnits
2289 and BufferFields incorrectly returned the parent object, not the actual
2290 value of the object. After this change, a dereference of a FieldUnit
2291 reference results in a read operation on the field to get the value, and
2292 likewise, the appropriate BufferField value is extracted from the target
2295 Fixed a problem where the _WAK method could cause a fault under these
2296 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
2297 method returned no value. The problem is rarely seen because most kernels
2298 run ACPICA in slack mode.
2300 For the DerefOf operator, a fatal error now results if an attempt is made
2301 to dereference a reference (created by the Index operator) to a NULL
2302 package element. Provides compatibility with other ACPI implementations,
2303 and this behavior will be added to a future version of the ACPI
2306 The ACPI Power Management Timer (defined in the FADT) is now optional.
2307 This provides compatibility with other ACPI implementations and will
2308 appear in the next version of the ACPI specification. If there is no PM
2309 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
2310 zero in the FADT indicates no PM timer.
2312 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
2313 allows the host to globally enable/disable all vendor strings, all
2314 feature strings, or both. Intended to be primarily used for debugging
2315 purposes only. Lv Zheng.
2317 Expose the collected _OSI data to the host via a global variable. This
2318 data tracks the highest level vendor ID that has been invoked by the BIOS
2319 so that the host (and potentially ACPICA itself) can change behaviors
2320 based upon the age of the BIOS.
2322 Example Code and Data Size: These are the sizes for the OS-independent
2323 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2324 debug version of the code includes the debug output trace mechanism and
2325 has a much larger code and data size.
2328 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2329 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2331 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2332 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2335 2) iASL Compiler/Disassembler and Tools:
2337 iASL: Created the following enhancements for the -so option (create
2339 1)Add offsets for the last nameseg in each namepath for every supported
2341 2)Add support for Processor, Device, Thermal Zone, and Scope objects
2342 3)Add the actual AML opcode for the parent object of every supported
2344 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
2346 Disassembler: Emit all unresolved external symbols in a single block.
2347 These are external references to control methods that could not be
2348 resolved, and thus, the disassembler had to make a guess at the number of
2351 iASL: The argument to the -T option (create table template) is now
2352 optional. If not specified, the default table is a DSDT, typically the
2355 ----------------------------------------
2356 26 June 2013. Summary of changes for version 20130626:
2358 1) ACPICA kernel-resident subsystem:
2360 Fixed an issue with runtime repair of the _CST object. Null or invalid
2361 elements were not always removed properly. Lv Zheng.
2363 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
2364 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
2365 the maximum number of GPEs is 1016. Use of multiple GPE block devices
2366 makes the system-wide number of GPEs essentially unlimited.
2368 Example Code and Data Size: These are the sizes for the OS-independent
2369 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2370 debug version of the code includes the debug output trace mechanism and
2371 has a much larger code and data size.
2374 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2375 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2377 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2378 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2381 2) iASL Compiler/Disassembler and Tools:
2383 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
2384 hosts. Now supports Linux, FreeBSD, and Windows.
2386 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
2387 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
2389 iASL/Preprocessor: Implemented full support for nested
2390 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
2392 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
2393 max. The original purpose of this constraint was to limit the amount of
2394 debug output. However, the string function in question (UtPrintString) is
2395 now used for the disassembler also, where 256 bytes is insufficient.
2396 Reported by RehabMan@GitHub.
2398 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
2399 tables. ACPICA BZ 999. Lv Zheng.
2401 iASL: Fixed a couple of error exit issues that could result in a "Could
2402 not delete <file>" message during ASL compilation.
2404 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
2405 the actual signatures for these tables are "FACP" and "APIC",
2408 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
2409 tables are allowed to have multiple instances.
2411 ----------------------------------------
2412 17 May 2013. Summary of changes for version 20130517:
2414 1) ACPICA kernel-resident subsystem:
2416 Fixed a regression introduced in version 20130328 for _INI methods. This
2417 change fixes a problem introduced in 20130328 where _INI methods are no
2418 longer executed properly because of a memory block that was not
2419 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
2420 <tomasz.nowicki@linaro.org>.
2422 Fixed a possible problem with the new extended sleep registers in the
2424 5.0 FADT. Do not use these registers (even if populated) unless the HW-
2425 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
2428 Implemented return value repair code for _CST predefined objects: Sort
2430 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
2432 Implemented a debug-only option to disable loading of SSDTs from the
2433 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
2434 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
2435 acglobal.h - ACPICA BZ 1005. Lv Zheng.
2437 Fixed some issues in the ACPICA initialization and termination code:
2438 Tomasz Nowicki <tomasz.nowicki@linaro.org>
2439 1) Clear events initialized flag upon event component termination. ACPICA
2441 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
2442 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
2443 4) Clear debug buffer global on termination to prevent possible multiple
2444 delete. ACPICA BZ 1010.
2446 Standardized all switch() blocks across the entire source base. After
2448 years, different formatting for switch() had crept in. This change makes
2449 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
2451 Split some files to enhance ACPICA modularity and configurability:
2452 1) Split buffer dump routines into utilities/utbuffer.c
2453 2) Split internal error message routines into utilities/uterror.c
2454 3) Split table print utilities into tables/tbprint.c
2455 4) Split iASL command-line option processing into asloptions.c
2457 Makefile enhancements:
2458 1) Support for all new files above.
2459 2) Abort make on errors from any subcomponent. Chao Guan.
2460 3) Add build support for Apple Mac OS X. Liang Qi.
2462 Example Code and Data Size: These are the sizes for the OS-independent
2463 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2464 debug version of the code includes the debug output trace mechanism and
2465 has a much larger code and data size.
2468 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2469 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2471 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2472 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2475 2) iASL Compiler/Disassembler and Tools:
2477 New utility: Implemented an easily portable version of the acpidump
2478 utility to extract ACPI tables from the system (or a file) in an ASCII
2480 dump format. The top-level code implements the various command line
2481 options, file I/O, and table dump routines. To port to a new host, only
2482 three functions need to be implemented to get tables -- since this
2483 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
2484 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
2485 1) The Windows version obtains the ACPI tables from the Registry.
2486 2) The Linux version is under development.
2487 3) Other hosts - If an OS-dependent module is submitted, it will be
2488 distributed with ACPICA.
2490 iASL: Fixed a regression for -D preprocessor option (define symbol). A
2491 restructuring/change to the initialization sequence caused this option to
2492 no longer work properly.
2494 iASL: Implemented a mechanism to disable specific warnings and remarks.
2495 Adds a new command line option, "-vw <messageid> as well as "#pragma
2496 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
2498 iASL: Fix for too-strict package object validation. The package object
2499 validation for return values from the predefined names is a bit too
2500 strict, it does not allow names references within the package (which will
2501 be resolved at runtime.) These types of references cannot be validated at
2502 compile time. This change ignores named references within package objects
2503 for names that return or define static packages.
2505 Debugger: Fixed the 80-character command line limitation for the History
2506 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
2508 iASL: Added control method and package support for the -so option
2509 (generates AML offset table for BIOS support.)
2511 iASL: issue a remark if a non-serialized method creates named objects. If
2512 a thread blocks within the method for any reason, and another thread
2513 enters the method, the method will fail because an attempt will be made
2515 create the same (named) object twice. In this case, issue a remark that
2516 the method should be marked serialized. NOTE: may become a warning later.
2519 ----------------------------------------
2520 18 April 2013. Summary of changes for version 20130418:
2522 1) ACPICA kernel-resident subsystem:
2524 Fixed a possible buffer overrun during some rare but specific field unit
2525 read operations. This overrun can only happen if the DSDT version is 1 --
2526 meaning that all AML integers are 32 bits -- and the field length is
2527 between 33 and 55 bits long. During the read, an internal buffer object
2529 created for the field unit because the field is larger than an integer
2531 bits). However, in this case, the buffer will be incorrectly written
2532 beyond the end because the buffer length is less than the internal
2534 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
2535 long, but a full 8 bytes will be written.
2537 Updated the Embedded Controller "orphan" _REG method support. This refers
2538 to _REG methods under the EC device that have no corresponding operation
2539 region. This is allowed by the ACPI specification. This update removes a
2540 dependency on the existence an ECDT table. It will execute an orphan _REG
2541 method as long as the operation region handler for the EC is installed at
2542 the EC device node and not the namespace root. Rui Zhang (original
2543 update), Bob Moore (update/integrate).
2545 Implemented run-time argument typechecking for all predefined ACPI names
2546 (_STA, _BIF, etc.) This change performs object typechecking on all
2547 incoming arguments for all predefined names executed via
2548 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
2549 passing correct object types as well as the correct number of arguments
2550 (therefore identifying any issues immediately). Also, the ASL/namespace
2551 definition of the predefined name is checked against the ACPI
2552 specification for the proper argument count. Adds one new file,
2555 Changed an exception code for the ASL UnLoad() operator. Changed the
2556 exception code for the case where the input DdbHandle is invalid, from
2557 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
2559 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
2560 global makefile. The use of this flag causes compiler errors on earlier
2561 versions of GCC, so it has been removed for compatibility.
2563 Miscellaneous cleanup:
2564 1) Removed some unused/obsolete macros
2565 2) Fixed a possible memory leak in the _OSI support
2566 3) Removed an unused variable in the predefined name support
2567 4) Windows OSL: remove obsolete reference to a memory list field
2569 Example Code and Data Size: These are the sizes for the OS-independent
2570 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2571 debug version of the code includes the debug output trace mechanism and
2572 has a much larger code and data size.
2575 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2576 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2578 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2579 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2582 2) iASL Compiler/Disassembler and Tools:
2584 AcpiExec: Added installation of a handler for the SystemCMOS address
2585 space. This prevents control method abort if a method accesses this
2588 AcpiExec: Added support for multiple EC devices, and now install EC
2589 operation region handler(s) at the actual EC device instead of the
2590 namespace root. This reflects the typical behavior of host operating
2593 AcpiExec: Updated to ensure that all operation region handlers are
2594 installed before the _REG methods are executed. This prevents a _REG
2595 method from aborting if it accesses an address space has no handler.
2596 AcpiExec installs a handler for every possible address space.
2598 Debugger: Enhanced the "handlers" command to display non-root handlers.
2599 This change enhances the handlers command to display handlers associated
2600 with individual devices throughout the namespace, in addition to the
2601 currently supported display of handlers associated with the root
2605 ASL Test Suite: Several test suite errors have been identified and
2606 resolved, reducing the total error count during execution. Chao Guan.
2608 ----------------------------------------
2609 28 March 2013. Summary of changes for version 20130328:
2611 1) ACPICA kernel-resident subsystem:
2613 Fixed several possible race conditions with the internal object reference
2614 counting mechanism. Some of the external ACPICA interfaces update object
2615 reference counts without holding the interpreter or namespace lock. This
2616 change adds a spinlock to protect reference count updates on the internal
2617 ACPICA objects. Reported by and with assistance from Andriy Gapon
2620 FADT support: Removed an extraneous warning for very large GPE register
2621 sets. This change removes a size mismatch warning if the legacy length
2622 field for a GPE register set is larger than the 64-bit GAS structure can
2623 accommodate. GPE register sets can be larger than the 255-bit width
2624 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
2626 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
2627 return from this interface. Handles a possible timeout case if
2628 ACPI_WAIT_FOREVER is modified by the host to be a value less than
2629 "forever". Jung-uk Kim.
2631 Predefined name support: Add allowed/required argument type information
2633 the master predefined info table. This change adds the infrastructure to
2634 enable typechecking on incoming arguments for all predefined
2635 methods/objects. It does not actually contain the code that will fully
2636 utilize this information, this is still under development. Also condenses
2637 some duplicate code for the predefined names into a new module,
2638 utilities/utpredef.c
2640 Example Code and Data Size: These are the sizes for the OS-independent
2641 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2642 debug version of the code includes the debug output trace mechanism and
2643 has a much larger code and data size.
2646 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2647 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2649 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2650 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2653 2) iASL Compiler/Disassembler and Tools:
2655 iASL: Implemented a new option to simplify the development of ACPI-
2657 BIOS code. Adds support for a new "offset table" output file. The -so
2658 option will create a C table containing the AML table offsets of various
2659 named objects in the namespace so that BIOS code can modify them easily
2661 boot time. This can simplify BIOS runtime code by eliminating expensive
2662 searches for "magic values", enhancing boot times and adding greater
2663 reliability. With assistance from Lee Hamel.
2665 iASL: Allow additional predefined names to return zero-length packages.
2666 Now, all predefined names that are defined by the ACPI specification to
2667 return a "variable-length package of packages" are allowed to return a
2668 zero length top-level package. This allows the BIOS to tell the host that
2669 the requested feature is not supported, and supports existing BIOS/ASL
2672 iASL: Changed the "result not used" warning to an error. This is the case
2673 where an ASL operator is effectively a NOOP because the result of the
2674 operation is not stored anywhere. For example:
2676 There is no target (missing 3rd argument), nor is the function return
2677 value used. This is potentially a very serious problem -- since the code
2678 was probably intended to do something, but for whatever reason, the value
2679 was not stored. Therefore, this issue has been upgraded from a warning to
2682 AcpiHelp: Added allowable/required argument types to the predefined names
2683 info display. This feature utilizes the recent update to the predefined
2684 names table (above).
2686 ----------------------------------------
2687 14 February 2013. Summary of changes for version 20130214:
2689 1) ACPICA Kernel-resident Subsystem:
2691 Fixed a possible regression on some hosts: Reinstated the safe return
2692 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
2693 evaluated only once. Although these macros are not needed for the ACPICA
2694 code itself, they are often used by ACPI-related host device drivers
2696 the safe feature may be necessary.
2698 Fixed several issues related to the ACPI 5.0 reduced hardware support
2699 (SOC): Now ensure that if the platform declares itself as hardware-
2701 via the FADT, the following functions become NOOPs (and always return
2702 AE_OK) because ACPI is always enabled by definition on these machines:
2708 Dynamic Object Repair: Implemented additional runtime repairs for
2709 predefined name return values. Both of these repairs can simplify code in
2710 the related device drivers that invoke these methods:
2711 1) For the _STR and _MLS names, automatically repair/convert an ASCII
2712 string to a Unicode buffer.
2713 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
2715 lone end tag descriptor in the following cases: A Return(0) was executed,
2716 a null buffer was returned, or no object at all was returned (non-slack
2717 mode only). Adds a new file, nsconvert.c
2718 ACPICA BZ 998. Bob Moore, Lv Zheng.
2720 Resource Manager: Added additional code to prevent possible infinite
2722 while traversing corrupted or ill-formed resource template buffers. Check
2723 for zero-length resource descriptors in all code that loops through
2724 resource templates (the length field is used to index through the
2725 template). This change also hardens the external AcpiWalkResources and
2726 AcpiWalkResourceBuffer interfaces.
2728 Local Cache Manager: Enhanced the main data structure to eliminate an
2729 unnecessary mechanism to access the next object in the list. Actually
2730 provides a small performance enhancement for hosts that use the local
2731 ACPICA cache manager. Jung-uk Kim.
2733 Example Code and Data Size: These are the sizes for the OS-independent
2734 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2735 debug version of the code includes the debug output trace mechanism and
2736 has a much larger code and data size.
2739 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2740 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2742 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2743 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2746 2) iASL Compiler/Disassembler and Tools:
2748 iASL/Disassembler: Fixed several issues with the definition of the ACPI
2749 5.0 RASF table (RAS Feature Table). This change incorporates late changes
2750 that were made to the ACPI 5.0 specification.
2752 iASL/Disassembler: Added full support for the following new ACPI tables:
2753 1) The MTMR table (MID Timer Table)
2754 2) The VRTC table (Virtual Real Time Clock Table).
2755 Includes header file, disassembler, table compiler, and template support
2758 iASL: Implemented compile-time validation of package objects returned by
2759 predefined names. This new feature validates static package objects
2760 returned by the various predefined names defined to return packages. Both
2761 object types and package lengths are validated, for both parent packages
2762 and sub-packages, if any. The code is similar in structure and behavior
2764 the runtime repair mechanism within the AML interpreter and uses the
2765 existing predefined name information table. Adds a new file, aslprepkg.c.
2768 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
2769 This feature detects a binary file with a valid ACPI table header and
2770 invokes the disassembler automatically. Eliminates the need to
2771 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
2773 iASL/Disassembler: Added several warnings for the case where there are
2774 unresolved control methods during the disassembly. This can potentially
2775 cause errors when the output file is compiled, because the disassembler
2776 assumes zero method arguments in these cases (it cannot determine the
2777 actual number of arguments without resolution/definition of the method).
2779 Debugger: Added support to display all resources with a single command.
2780 Invocation of the resources command with no arguments will now display
2782 resources within the current namespace.
2784 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
2787 ----------------------------------------
2788 17 January 2013. Summary of changes for version 20130117:
2790 1) ACPICA Kernel-resident Subsystem:
2792 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
2793 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
2794 objects to return a package containing one integer, most BIOS code
2796 two integers and the previous code reflects that. However, we also need
2798 support BIOS code that actually implements to the ACPI spec, and this
2799 change reflects this.
2801 Fixed two issues with the ACPI_DEBUG_PRINT macros:
2802 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
2803 C compilers that require this support.
2804 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
2805 ACPI_DEBUG is already used by many of the various hosts.
2807 Updated all ACPICA copyrights and signons to 2013. Added the 2013
2808 copyright to all module headers and signons, including the standard Linux
2809 header. This affects virtually every file in the ACPICA core subsystem,
2810 iASL compiler, all ACPICA utilities, and the test suites.
2812 Example Code and Data Size: These are the sizes for the OS-independent
2813 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2814 debug version of the code includes the debug output trace mechanism and
2815 has a much larger code and data size.
2818 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2819 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2821 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2822 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2825 2) iASL Compiler/Disassembler and Tools:
2827 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
2828 prevent a possible fault on some hosts. Some C libraries modify the arg
2829 pointer parameter to vfprintf making it difficult to call it twice in the
2830 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
2831 does not affect the Windows OSL since the Win C library does not modify
2832 the arg pointer. Chao Guan, Bob Moore.
2834 iASL: Fixed a possible infinite loop when the maximum error count is
2835 reached. If an output file other than the .AML file is specified (such as
2836 a listing file), and the maximum number of errors is reached, do not
2837 attempt to flush data to the output file(s) as the compiler is aborting.
2838 This can cause an infinite loop as the max error count code essentially
2839 keeps calling itself.
2841 iASL/Disassembler: Added an option (-in) to ignore NOOP
2843 Implemented for both the compiler and the disassembler. Often, the NOOP
2844 opcode is used as padding for packages that are changed dynamically by
2846 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
2847 errors. This option causes the disassembler to ignore all NOOP opcodes
2848 (0xA3), and it also causes the compiler to ignore all ASL source code
2852 Debugger: Enhanced the Sleep command to execute all sleep states. This
2853 change allows Sleep to be invoked with no arguments and causes the
2854 debugger to execute all of the sleep states, 0-5, automatically.
2856 ----------------------------------------
2857 20 December 2012. Summary of changes for version 20121220:
2859 1) ACPICA Kernel-resident Subsystem:
2861 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
2862 alternate entry point for AcpiWalkResources and improves the usability of
2863 the resource manager by accepting as input a buffer containing the output
2864 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
2865 input buffer is not deleted by this interface so that it can be used by
2866 the host later. See the ACPICA reference for details.
2868 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
2869 (DSDT version < 2). The constant will be truncated and this warning
2870 reflects that behavior.
2872 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
2873 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
2874 both get and set the new wake bit in these descriptors, separately from
2875 the existing share bit. Reported by Aaron Lu.
2877 Interpreter: Fix Store() when an implicit conversion is not possible. For
2878 example, in the cases such as a store of a string to an existing package
2879 object, implement the store as a CopyObject(). This is a small departure
2880 from the ACPI specification which states that the control method should
2882 aborted in this case. However, the ASLTS suite depends on this behavior.
2884 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
2885 macros: check if debug output is currently enabled as soon as possible to
2886 minimize performance impact if debug is in fact not enabled.
2888 Source code restructuring: Cleanup to improve modularity. The following
2889 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
2890 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
2891 Associated makefiles and project files have been updated.
2893 Changed an exception code for LoadTable operator. For the case where one
2894 of the input strings is too long, change the returned exception code from
2895 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
2897 Fixed a possible memory leak in dispatcher error path. On error, delete
2898 the mutex object created during method mutex creation. Reported by
2899 tim.gardner@canonical.com.
2901 Example Code and Data Size: These are the sizes for the OS-independent
2902 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2903 debug version of the code includes the debug output trace mechanism and
2904 has a much larger code and data size.
2907 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2908 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2910 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2911 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2914 2) iASL Compiler/Disassembler and Tools:
2916 iASL: Disallow a method call as argument to the ObjectType ASL operator.
2917 This change tracks an errata to the ACPI 5.0 document. The AML grammar
2918 will not allow the interpreter to differentiate between a method and a
2919 method invocation when these are used as an argument to the ObjectType
2920 operator. The ACPI specification change is to disallow a method
2922 (UserTerm) for the ObjectType operator.
2924 Finish support for the TPM2 and CSRT tables in the headers, table
2925 compiler, and disassembler.
2927 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
2928 always expires immediately if the semaphore is not available. The
2930 code was using a relative-time timeout, but sem_timedwait requires the
2932 of an absolute time.
2934 iASL: Added a remark if the Timer() operator is used within a 32-bit
2935 table. This operator returns a 64-bit time value that will be truncated
2936 within a 32-bit table.
2938 iASL Source code restructuring: Cleanup to improve modularity. The
2939 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
2940 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
2944 ----------------------------------------
2945 14 November 2012. Summary of changes for version 20121114:
2947 1) ACPICA Kernel-resident Subsystem:
2949 Implemented a performance enhancement for ACPI/AML Package objects. This
2950 change greatly increases the performance of Package objects within the
2951 interpreter. It changes the processing of reference counts for packages
2953 optimizing for the most common case where the package sub-objects are
2954 either Integers, Strings, or Buffers. Increases the overall performance
2956 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
2958 Chao Guan. ACPICA BZ 943.
2960 Implemented and deployed common macros to extract flag bits from resource
2961 descriptors. Improves readability and maintainability of the code. Fixes
2963 problem with the UART serial bus descriptor for the number of data bits
2964 flags (was incorrectly 2 bits, should be 3).
2966 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
2967 of the macros and changed the SETx macros to the style of (destination,
2968 source). Also added ACPI_CASTx companion macros. Lv Zheng.
2970 Example Code and Data Size: These are the sizes for the OS-independent
2971 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2972 debug version of the code includes the debug output trace mechanism and
2973 has a much larger code and data size.
2976 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2977 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2979 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2980 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2983 2) iASL Compiler/Disassembler and Tools:
2985 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
2986 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
2987 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
2989 Disassembler: Fixed a problem with external declaration generation. Fixes
2990 a problem where an incorrect pathname could be generated for an external
2991 declaration if the original reference to the object includes leading
2992 carats (^). ACPICA BZ 984.
2994 Debugger: Completed a major update for the Disassemble<method> command.
2995 This command was out-of-date and did not properly disassemble control
2996 methods that had any reasonable complexity. This fix brings the command
2998 to the same level as the rest of the disassembler. Adds one new file,
2999 dmdeferred.c, which is existing code that is now common with the main
3000 disassembler and the debugger disassemble command. ACPICA MZ 978.
3002 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
3003 Newer versions of Bison emit this prototype, so moved the prototype out
3005 the iASL header to where it is actually used in order to avoid a
3009 iASL/Tools: Standardized use of the stream I/O functions:
3010 1) Ensure check for I/O error after every fopen/fread/fwrite
3011 2) Ensure proper order of size/count arguments for fread/fwrite
3012 3) Use test of (Actual != Requested) after all fwrite, and most fread
3013 4) Standardize I/O error messages
3014 Improves reliability and maintainability of the code. Bob Moore, Lv
3018 Disassembler: Prevent duplicate External() statements. During generation
3019 of external statements, detect similar pathnames that are actually
3020 duplicates such as these:
3023 Remove all leading '\' characters from pathnames during the external
3024 statement generation so that duplicates will be detected and tossed.
3027 Tools: Replace low-level I/O with stream I/O functions. Replace
3028 open/read/write/close with the stream I/O equivalents
3029 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
3032 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
3033 name header so that AcpiXtract recognizes the output file/table.
3035 iASL: Remove obsolete -2 option flag. Originally intended to force the
3036 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
3037 and the entire concept is now obsolete.
3039 ----------------------------------------
3040 18 October 2012. Summary of changes for version 20121018:
3043 1) ACPICA Kernel-resident Subsystem:
3045 Updated support for the ACPI 5.0 MPST table. Fixes some problems
3046 introduced by late changes to the table as it was added to the ACPI 5.0
3047 specification. Includes header, disassembler, and data table compiler
3048 support as well as a new version of the MPST template.
3050 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
3051 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
3052 methods: _HID, _CID, and _UID.
3054 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
3055 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
3056 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
3057 names for their various drivers. Affects the AcpiGetObjectInfo external
3058 interface, and other internal interfaces as well.
3060 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
3061 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
3062 on machines that support non-aligned transfers. Optimizes for this case
3063 rather than using a strncpy. With assistance from Zheng Lv.
3065 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
3066 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
3068 Added a new debug print message for AML mutex objects that are force-
3069 released. At control method termination, any currently acquired mutex
3070 objects are force-released. Adds a new debug-only message for each one
3073 Audited/updated all ACPICA return macros and the function debug depth
3074 counter: 1) Ensure that all functions that use the various TRACE macros
3075 also use the appropriate ACPICA return macros. 2) Ensure that all normal
3076 return statements surround the return expression (value) with parens to
3077 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
3078 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
3080 Global source code changes/maintenance: All extra lines at the start and
3081 end of each source file have been removed for consistency. Also, within
3082 comments, all new sentences start with a single space instead of a double
3083 space, again for consistency across the code base.
3085 Example Code and Data Size: These are the sizes for the OS-independent
3086 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3087 debug version of the code includes the debug output trace mechanism and
3088 has a much larger code and data size.
3091 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3092 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3094 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3095 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3098 2) iASL Compiler/Disassembler and Tools:
3100 AcpiExec: Improved the algorithm used for memory leak/corruption
3101 detection. Added some intelligence to the code that maintains the global
3102 list of allocated memory. The list is now ordered by allocated memory
3103 address, significantly improving performance. When running AcpiExec on
3104 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
3105 on the platform and/or the environment. Note, this performance
3106 enhancement affects the AcpiExec utility only, not the kernel-resident
3109 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
3110 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
3111 incorrect table offset reported for invalid opcodes. Report the original
3112 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
3114 Disassembler: Enhanced the -vt option to emit the binary table data in
3115 hex format to assist with debugging.
3117 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
3118 size of file structure. Colin Ian King.
3120 ----------------------------------------
3121 13 September 2012. Summary of changes for version 20120913:
3124 1) ACPICA Kernel-resident Subsystem:
3126 ACPI 5.0: Added two new notify types for the Hardware Error Notification
3127 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
3131 Table Manager: Merged/removed duplicate code in the root table resize
3132 functions. One function is external, the other is internal. Lv Zheng,
3136 Makefiles: Completely removed the obsolete "Linux" makefiles under
3137 acpica/generate/linux. These makefiles are obsolete and have been
3140 the generic unix makefiles under acpica/generate/unix.
3142 Makefiles: Ensure that binary files always copied properly. Minor rule
3144 to ensure that the final binary output files are always copied up to the
3145 appropriate binary directory (bin32 or bin64.)
3147 Example Code and Data Size: These are the sizes for the OS-independent
3148 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3150 version of the code includes the debug output trace mechanism and has a
3152 larger code and data size.
3155 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3156 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3158 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3159 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3162 2) iASL Compiler/Disassembler and Tools:
3164 Disassembler: Fixed a possible fault during the disassembly of resource
3165 descriptors when a second parse is required because of the invocation of
3166 external control methods within the table. With assistance from
3167 adq@lidskialf.net. ACPICA BZ 976.
3169 iASL: Fixed a namepath optimization problem. An error can occur if the
3171 node that contains the namepath to be optimized does not have a parent
3173 that is a named object. This change fixes the problem.
3175 iASL: Fixed a regression where the AML file is not deleted on errors. The
3177 output file should be deleted if there are any errors during the
3180 only exception is if the -f (force output) option is used. ACPICA BZ 974.
3182 iASL: Added a feature to automatically increase internal line buffer
3184 Via realloc(), automatically increase the internal line buffer sizes as
3185 necessary to support very long source code lines. The current version of
3187 preprocessor requires a buffer long enough to contain full source code
3189 This change increases the line buffer(s) if the input lines go beyond the
3190 current buffer size. This eliminates errors that occurred when a source
3192 line was longer than the buffer.
3194 iASL: Fixed a problem with constant folding in method declarations. The
3195 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
3197 Type3 opcode was used.
3199 Debugger: Improved command help support. For incorrect argument count,
3201 full help for the command. For help command itself, allow an argument to
3204 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
3205 errors during execution of the suite. Guan Chao.
3207 ----------------------------------------
3208 16 August 2012. Summary of changes for version 20120816:
3211 1) ACPICA Kernel-resident Subsystem:
3213 Removed all use of the deprecated _GTS and _BFS predefined methods. The
3215 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
3216 deprecated and will probably be removed from the ACPI specification.
3218 does not invoke them, and reportedly never will. The final nail in the
3220 is that the ACPI specification states that these methods must be run with
3221 interrupts off, which is not going to happen in a kernel interpreter.
3223 Linux has removed all use of the methods also. It was discovered that
3224 invoking these functions caused failures on some machines, probably
3226 they were never tested since Windows does not call them. Affects two
3228 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
3231 Implemented support for complex bit-packed buffers returned from the _PLD
3232 (Physical Location of Device) predefined method. Adds a new external
3233 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
3235 structure. Note: C Bitfields cannot be used for this type of predefined
3236 structure since the memory layout of individual bitfields is not defined
3238 the C language. In addition, there are endian concerns where a compiler
3240 change the bitfield ordering based on the machine type. The new ACPICA
3241 interface eliminates these issues, and should be called after _PLD is
3242 executed. ACPICA BZ 954.
3244 Implemented a change to allow a scope change to root (via "Scope (\)")
3246 execution of module-level ASL code (code that is executed at table load
3249 Added the Windows8/Server2012 string for the _OSI method. This change
3252 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
3255 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
3257 and CSRT (Core System Resource Table).
3259 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
3260 names. This simplifies access to the buffers returned by these predefined
3261 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
3263 GPE support: Removed an extraneous parameter from the various low-level
3264 internal GPE functions. Tang Feng.
3266 Removed the linux makefiles from the unix packages. The generate/linux
3267 makefiles are obsolete and have been removed from the unix tarball
3269 packages. The replacement makefiles are under generate/unix, and there is
3271 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
3273 Updates for Unix makefiles:
3274 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
3275 2) Update linker flags (move to end of command line) for AcpiExec
3279 Split ACPICA initialization functions to new file, utxfinit.c. Split from
3280 utxface.c to improve modularity and reduce file size.
3282 Example Code and Data Size: These are the sizes for the OS-independent
3283 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3284 debug version of the code includes the debug output trace mechanism and
3286 much larger code and data size.
3289 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3290 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3292 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3293 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3296 2) iASL Compiler/Disassembler and Tools:
3298 iASL: Fixed a problem with constant folding for fixed-length constant
3299 expressions. The constant-folding code was not being invoked for constant
3300 expressions that allow the use of type 3/4/5 opcodes to generate
3302 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
3304 in the generation of invalid AML bytecode. ACPICA BZ 970.
3306 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
3307 apparently automatically emit some of the necessary externals. This
3309 handles these versions in order to eliminate generation warnings.
3311 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
3313 Disassembler: Add support to decode _PLD buffers. The decoded buffer
3315 within comments in the output file.
3317 Debugger: Fixed a regression with the "Threads" command where
3318 AE_BAD_PARAMETER was always returned.
3320 ----------------------------------------
3321 11 July 2012. Summary of changes for version 20120711:
3323 1) ACPICA Kernel-resident Subsystem:
3325 Fixed a possible fault in the return package object repair code. Fixes a
3326 problem that can occur when a lone package object is wrapped with an
3328 package object in order to force conformance to the ACPI specification.
3330 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
3334 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
3335 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
3336 ARB_DIS bit must be implemented in the host-dependent C3 processor power
3338 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
3340 Intel and other vendors. (for Intel: ICH4-M and earlier)
3342 This change removes the code to disable/enable bus master arbitration
3344 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
3346 resume problems on some machines. The change has been in use for over
3350 Implemented two new external interfaces to support host-directed dynamic
3352 table load and unload. They are intended to simplify the host
3354 of hot-plug support:
3355 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
3356 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
3358 See the ACPICA reference for additional details. Adds one new file,
3359 components/tables/tbxfload.c
3361 Implemented and deployed two new interfaces for errors and warnings that
3363 known to be caused by BIOS/firmware issues:
3364 AcpiBiosError: Prints "ACPI Firmware Error" message.
3365 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
3366 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
3368 and FADT errors. Additional deployment to be completed as appropriate in
3370 future. The associated conditional macros are ACPI_BIOS_ERROR and
3371 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
3376 Implicit notify support: ensure that no memory allocation occurs within a
3377 critical region. This fix moves a memory allocation outside of the time
3379 spinlock is held. Fixes issues on systems that do not allow this
3383 Split exception code utilities and tables into a new file,
3386 Example Code and Data Size: These are the sizes for the OS-independent
3387 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3389 version of the code includes the debug output trace mechanism and has a
3391 larger code and data size.
3394 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3395 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3397 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3398 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3401 2) iASL Compiler/Disassembler and Tools:
3403 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
3407 Debugger: Enhanced the "tables" command to emit additional information
3409 the current set of ACPI tables, including the owner ID and flags decode.
3411 Debugger: Reimplemented the "unload" command to use the new
3412 AcpiUnloadParentTable external interface. This command was disable
3414 due to need for an unload interface.
3416 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
3418 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
3420 ----------------------------------------
3421 20 June 2012. Summary of changes for version 20120620:
3424 1) ACPICA Kernel-resident Subsystem:
3426 Implemented support to expand the "implicit notify" feature to allow
3428 devices to be notified by a single GPE. This feature automatically
3430 runtime device notification in the absence of a BIOS-provided GPE control
3431 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
3433 provided by ACPICA for Windows compatibility, and is a workaround for
3436 code errors. See the description of the AcpiSetupGpeForWake interface in
3438 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
3440 Changed some comments and internal function names to simplify and ensure
3441 correctness of the Linux code translation. No functional changes.
3443 Example Code and Data Size: These are the sizes for the OS-independent
3444 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3446 version of the code includes the debug output trace mechanism and has a
3448 larger code and data size.
3451 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3452 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3454 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3455 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3458 2) iASL Compiler/Disassembler and Tools:
3460 Disassembler: Added support to emit short, commented descriptions for the
3462 predefined names in order to improve the readability of the disassembled
3463 output. ACPICA BZ 959. Changes include:
3464 1) Emit descriptions for all standard predefined names (_INI, _STA,
3467 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
3468 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
3471 AcpiSrc: Fixed several long-standing Linux code translation issues.
3473 descriptions in function headers are now translated properly to lower
3476 underscores. ACPICA BZ 961. Also fixes translation problems such as
3482 local_fADT -> local_FADT
3483 execute_oSI -> execute_OSI
3485 iASL: Fixed a problem where null bytes were inadvertently emitted into
3489 iASL: Added the existing debug options to the standard help screen. There
3491 no longer two different help screens. ACPICA BZ 957.
3493 AcpiHelp: Fixed some typos in the various predefined name descriptions.
3495 expand some of the descriptions where appropriate.
3497 iASL: Fixed the -ot option (display compile times/statistics). Was not
3499 properly for standard output; only worked for the debug file case.
3501 ----------------------------------------
3502 18 May 2012. Summary of changes for version 20120518:
3505 1) ACPICA Core Subsystem:
3507 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
3509 to block until asynchronous events such as notifies and GPEs have
3511 Within ACPICA, it is only called before a notify or GPE handler is
3512 removed/uninstalled. It also may be useful for the host OS within related
3513 drivers such as the Embedded Controller driver. See the ACPICA reference
3515 additional information. ACPICA BZ 868.
3517 ACPI Tables: Added a new error message for a possible overflow failure
3519 the conversion of FADT 32-bit legacy register addresses to internal
3522 bit GAS structure representation. The GAS has a one-byte "bit length"
3524 thus limiting the register length to 255 bits. ACPICA BZ 953.
3526 Example Code and Data Size: These are the sizes for the OS-independent
3527 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3529 version of the code includes the debug output trace mechanism and has a
3531 larger code and data size.
3534 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3535 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3537 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3538 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3541 2) iASL Compiler/Disassembler and Tools:
3543 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
3545 This keyword was added late in the ACPI 5.0 release cycle and was not
3546 implemented until now.
3548 Disassembler: Added support for Operation Region externals. Adds missing
3549 support for operation regions that are defined in another table, and
3550 referenced locally via a Field or BankField ASL operator. Now generates
3552 correct External statement.
3554 Disassembler: Several additional fixes for the External() statement
3556 related to some ASL operators. Also, order the External() statements
3557 alphabetically in the disassembler output. Fixes the External()
3560 the Create* field, Alias, and Scope operators:
3561 1) Create* buffer field operators - fix type mismatch warning on
3563 2) Alias - implement missing External support
3564 3) Scope - fix to make sure all necessary externals are emitted.
3566 iASL: Improved pathname support. For include files, merge the prefix
3568 with the file pathname and eliminate unnecessary components. Convert
3569 backslashes in all pathnames to forward slashes, for readability. Include
3571 pathname changes affect both #include and Include() type operators.
3573 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
3575 of a valid line by inserting a newline and then returning the EOF during
3577 next call to GetNextLine. Prevents the line from being ignored due to EOF
3580 iASL: Implemented some changes to enhance the IDE support (-vi option.)
3582 and Warning messages are now correctly recognized for both the source
3584 browser and the global error and warning counts.
3586 ----------------------------------------
3587 20 April 2012. Summary of changes for version 20120420:
3590 1) ACPICA Core Subsystem:
3592 Implemented support for multiple notify handlers. This change adds
3595 allow multiple system and device notify handlers on Device, Thermal Zone,
3597 Processor objects. This can simplify the host OS notification
3599 Also re-worked and restructured the entire notify support code to
3601 handler installation, handler removal, notify event queuing, and notify
3602 dispatch to handler(s). Note: there can still only be two global notify
3603 handlers - one for system notifies and one for device notifies. There are
3605 changes to the existing handler install/remove interfaces. Lin Ming, Bob
3606 Moore, Rafael Wysocki.
3608 Fixed a regression in the package repair code where the object reference
3609 count was calculated incorrectly. Regression was introduced in the commit
3610 "Support to add Package wrappers".
3612 Fixed a couple possible memory leaks in the AML parser, in the error
3614 path. Jesper Juhl, Lin Ming.
3616 Example Code and Data Size: These are the sizes for the OS-independent
3617 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3618 debug version of the code includes the debug output trace mechanism and
3620 much larger code and data size.
3623 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3624 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3626 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3627 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3630 2) iASL Compiler/Disassembler and Tools:
3632 iASL: Fixed a problem with the resource descriptor support where the
3634 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
3635 included in cumulative descriptor offset, resulting in incorrect values
3637 resource tags within resource descriptors appearing after a
3639 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
3641 iASL and Preprocessor: Implemented full support for the #line directive
3643 correctly track original source file line numbers through the .i
3645 output file - for error and warning messages.
3647 iASL: Expand the allowable byte constants for address space IDs.
3649 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
3650 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
3652 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
3654 iASL: Add option to completely disable the preprocessor (-Pn).
3656 iASL: Now emit all error/warning messages to standard error (stderr) by
3657 default (instead of the previous stdout).
3659 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
3661 for resource descriptor offset fix above. Update/cleanup error output
3662 routines. Enable and send iASL errors/warnings to an error logfile
3663 (error.txt). Send all other iASL output to a logfile (compiler.txt).
3665 several extraneous "unrecognized operator" messages.
3667 ----------------------------------------
3668 20 March 2012. Summary of changes for version 20120320:
3671 1) ACPICA Core Subsystem:
3673 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
3674 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
3676 does not execute these methods, and therefore these methods are often
3677 untested. It has been seen on some systems where the execution of these
3678 methods causes errors and also prevents the machine from entering S5. It
3680 therefore suggested that host operating systems do not execute these
3682 by default. In the future, perhaps these methods can be optionally
3684 based on the age of the system and/or what is the newest version of
3686 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
3688 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
3691 Fixed a problem where the length of the local/common FADT was set too
3693 The local FADT table length cannot be set to the common length until the
3694 original length has been examined. There is code that checks the table
3696 and sets various fields appropriately. This can affect older machines
3698 early FADT versions. For example, this can cause inadvertent writes to
3700 CST_CNT register. Julian Anastasov.
3702 Fixed a mapping issue related to a physical table override. Use the
3704 mapping mechanism for tables loaded via the physical override OSL
3706 This allows for early mapping before the virtual memory manager is
3708 Thomas Renninger, Bob Moore.
3710 Enhanced the automatic return-object repair code: Repair a common problem
3712 predefined methods that are defined to return a variable-length Package
3714 sub-objects. If there is only one sub-object, some BIOS ASL code
3716 simply returns the single object instead of a Package with one sub-
3718 This new support will repair this error by wrapping a Package object
3720 the original object, creating the correct and expected Package with one
3722 object. Names that can be repaired in this manner include: _ALR, _CSD,
3724 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
3727 Changed the exception code returned for invalid ACPI paths passed as
3728 parameters to external interfaces such as AcpiEvaluateObject. Was
3729 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
3731 Example Code and Data Size: These are the sizes for the OS-independent
3732 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3734 version of the code includes the debug output trace mechanism and has a
3736 larger code and data size.
3739 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3740 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3742 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3743 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3746 2) iASL Compiler/Disassembler and Tools:
3748 iASL: Added the infrastructure and initial implementation of a integrated
3750 like preprocessor. This will simplify BIOS development process by
3752 the need for a separate preprocessing step during builds. On Windows, it
3754 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
3755 features including full #define() macro support are still under
3757 These preprocessor directives are supported:
3770 In addition, these new command line options are supported:
3771 -D <symbol> Define symbol for preprocessor use
3772 -li Create preprocessed output file (*.i)
3773 -P Preprocess only and create preprocessor output file (*.i)
3775 Table Compiler: Fixed a problem where the equals operator within an
3777 did not work properly.
3779 Updated iASL to use the current versions of Bison/Flex. Updated the
3781 project file to invoke these tools from the standard location. ACPICA BZ
3784 Flex for Windows: V2.5.4
3785 Bison for Windows: V2.4.1
3787 ----------------------------------------
3788 15 February 2012. Summary of changes for version 20120215:
3791 1) ACPICA Core Subsystem:
3793 There have been some major changes to the sleep/wake support code, as
3794 described below (a - e).
3796 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
3797 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
3798 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
3800 time the _BFS method is called and the _WAK method is called. NOTE: all
3802 must update their wake/resume code or else sleep/wake will not work
3806 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
3808 method. Some machines require that the GPEs are enabled before the _WAK
3810 is executed. Thomas Renninger.
3812 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
3814 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
3816 determine whether the system is rebooting or resuming. Matthew Garrett.
3818 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
3820 match the ACPI specification requirement. Rafael Wysocki.
3822 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
3823 registers within the V5 FADT. This support adds two new files:
3824 hardware/hwesleep.c implements the support for the new registers. Moved
3826 sleep/wake external interfaces to hardware/hwxfsleep.c.
3829 Added a new OSL interface for ACPI table overrides,
3830 AcpiOsPhysicalTableOverride. This interface allows the host to override a
3831 table via a physical address, instead of the logical address required by
3832 AcpiOsTableOverride. This simplifies the host implementation. Initial
3833 implementation by Thomas Renninger. The ACPICA implementation creates a
3835 shared function for table overrides that attempts both a logical and a
3838 Expanded the OSL memory read/write interfaces to 64-bit data
3839 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
3840 transfer support for GAS register structures passed to AcpiRead and
3843 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
3845 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
3847 See the ACPICA reference for details. ACPICA BZ 942. This option removes
3849 10% of the code and 5% of the static data, and the following hardware
3851 features become unavailable:
3852 PM Event and Control registers
3853 SCI interrupt (and handler)
3855 General Purpose Events (GPEs)
3858 FACS table (Waking vectors and Global Lock)
3860 Updated the unix tarball directory structure to match the ACPICA git
3862 tree. This ensures that the generic unix makefiles work properly (in
3863 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
3866 Updated the return value of the _REV predefined method to integer value 5
3868 reflect ACPI 5.0 support.
3870 Moved the external ACPI PM timer interface prototypes to the public
3872 file where they belong.
3874 Example Code and Data Size: These are the sizes for the OS-independent
3875 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3877 version of the code includes the debug output trace mechanism and has a
3879 larger code and data size.
3882 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3883 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3885 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3886 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3889 2) iASL Compiler/Disassembler and Tools:
3891 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
3892 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
3893 incorrectly displayed.
3895 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
3898 ----------------------------------------
3899 11 January 2012. Summary of changes for version 20120111:
3902 1) ACPICA Core Subsystem:
3904 Implemented a new mechanism to allow host device drivers to check for
3906 range conflicts with ACPI Operation Regions. Both SystemMemory and
3908 address spaces are supported. A new external interface,
3909 AcpiCheckAddressRange,
3910 allows drivers to check an address range against the ACPI namespace. See
3912 ACPICA reference for additional details. Adds one new file,
3913 utilities/utaddress.c. Lin Ming, Bob Moore.
3915 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
3918 Status registers, update the ACPI 5.0 flags, and update internal data
3919 structures to handle an FADT larger than 256 bytes. The size of the ACPI
3923 Updated all ACPICA copyrights and signons to 2012. Added the 2012
3925 all module headers and signons, including the standard Linux header. This
3926 affects virtually every file in the ACPICA core subsystem, iASL compiler,
3928 all ACPICA utilities.
3930 Example Code and Data Size: These are the sizes for the OS-independent
3931 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3933 version of the code includes the debug output trace mechanism and has a
3935 larger code and data size.
3938 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3939 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3941 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3942 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3945 2) iASL Compiler/Disassembler and Tools:
3947 Disassembler: fixed a problem with the automatic resource tag generation
3948 support. Fixes a problem where the resource tags are inadvertently not
3949 constructed if the table being disassembled contains external references
3951 control methods. Moved the actual construction of the tags to after the
3953 namespace is constructed (after 2nd parse is invoked due to external
3955 method references.) ACPICA BZ 941.
3957 Table Compiler: Make all "generic" operators caseless. These are the
3959 like UINT8, String, etc. Making these caseless improves ease-of-use.
3963 ----------------------------------------
3964 23 November 2011. Summary of changes for version 20111123:
3966 0) ACPI 5.0 Support:
3968 This release contains full support for the ACPI 5.0 specification, as
3971 Reduced Hardware Support:
3972 -------------------------
3974 This support allows for ACPI systems without the usual ACPI hardware.
3976 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
3978 not attempt to initialize or use any of the usual ACPI hardware. Note,
3980 this flag is set, all of the following ACPI hardware is assumed to be not
3981 present and is not initialized or accessed:
3983 General Purpose Events (GPEs)
3984 Fixed Events (PM1a/PM1b and PM Control)
3985 Power Management Timer and Console Buttons (power/sleep)
3986 Real-time Clock Alarm
3988 System Control Interrupt (SCI)
3989 The FACS is assumed to be non-existent
3994 All new tables and updates to existing tables are fully supported in the
3995 ACPICA headers (for use by device drivers), the disassembler, and the
3997 Data Table Compiler. ACPI 5.0 defines these new tables:
3999 BGRT /* Boot Graphics Resource Table */
4000 DRTM /* Dynamic Root of Trust for Measurement table */
4001 FPDT /* Firmware Performance Data Table */
4002 GTDT /* Generic Timer Description Table */
4003 MPST /* Memory Power State Table */
4004 PCCT /* Platform Communications Channel Table */
4005 PMTT /* Platform Memory Topology Table */
4006 RASF /* RAS Feature table */
4008 Operation Regions/SpaceIDs:
4009 ---------------------------
4011 All new operation regions are fully supported by the iASL compiler, the
4012 disassembler, and the ACPICA runtime code (for dispatch to region
4014 The new operation region Space IDs are:
4019 Resource Descriptors:
4020 ---------------------
4022 All new ASL resource descriptors are fully supported by the iASL
4025 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
4027 all new predefined resource tags). New descriptors are:
4036 ASL/AML Operators, New and Modified:
4037 ------------------------------------
4039 One new operator is added, the Connection operator, which is used to
4041 a GeneralPurposeIo or GenericSerialBus resource descriptor with
4043 field objects within an operation region. Several new protocols are
4045 with the AccessAs operator. All are fully supported by the iASL compiler,
4046 disassembler, and runtime ACPICA AML interpreter:
4048 Connection // Declare Field Connection
4050 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
4051 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
4053 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
4054 RawDataBuffer // Data type for Vendor Data
4057 Predefined ASL/AML Objects:
4058 ---------------------------
4060 All new predefined objects/control-methods are supported by the iASL
4062 and the ACPICA runtime validation/repair (arguments and return values.)
4064 predefined names include the following:
4066 Standard Predefined Names (Objects or Control Methods):
4067 _AEI, _CLS, _CPC, _CWS, _DEP,
4068 _DLM, _EVT, _GCP, _CRT, _GWS,
4069 _HRV, _PRE, _PSE, _SRT, _SUB.
4071 Resource Tags (Names used to access individual fields within resource
4073 _DBT, _DPL, _DRS, _END, _FLC,
4074 _IOR, _LIN, _MOD, _PAR, _PHA,
4075 _PIN, _PPI, _POL, _RXL, _SLV,
4076 _SPE, _STB, _TXL, _VEN.
4078 ACPICA External Interfaces:
4079 ---------------------------
4081 Several new interfaces have been defined for use by ACPI-related device
4082 drivers and other host OS services:
4084 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
4086 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
4087 provided by the BIOS. They are intended to be used in conjunction with
4089 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
4090 mutual exclusion with the AML code/interpreter.
4092 AcpiGetEventResources: Returns the (formatted) resource descriptors as
4094 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
4096 resource descriptors associated with hardware-reduced platform events,
4098 to the AcpiGetCurrentResources interface.
4100 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
4101 operation regions, information about the Connection() object and any
4103 length information is passed to the region handler within the Context
4106 AcpiBufferToResource: This interface converts a raw AML buffer containing
4108 resource template or resource descriptor to the ACPI_RESOURCE internal
4110 suitable for use by device drivers. Can be used by an operation region
4112 to convert the Connection() buffer object into a ACPI_RESOURCE.
4114 Miscellaneous/Tools/TestSuites:
4115 -------------------------------
4117 Support for extended _HID names (Four alpha characters instead of three).
4118 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
4119 Support for ACPI 5.0 features in the ASLTS test suite.
4120 Fully updated documentation (ACPICA and iASL reference documents.)
4122 ACPI Table Definition Language:
4123 -------------------------------
4125 Support for this language was implemented and released as a subsystem of
4127 iASL compiler in 2010. (See the iASL compiler User Guide.)
4130 Non-ACPI 5.0 changes for this release:
4131 --------------------------------------
4133 1) ACPICA Core Subsystem:
4135 Fix a problem with operation region declarations where a failure can
4138 the region name and an argument that evaluates to an object (such as the
4139 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
4142 Do not abort an ACPI table load if an invalid space ID is found within.
4144 will be caught later if the offending method is executed. ACPICA BZ 925.
4146 Fixed an issue with the FFixedHW space ID where the ID was not always
4147 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
4149 Fixed a problem with the 32-bit generation of the unix-specific OSL
4150 (osunixxf.c). Lin Ming, ACPICA BZ 936.
4152 Several changes made to enable generation with the GCC 4.6 compiler.
4156 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
4158 field registers out-of-range.
4160 2) iASL Compiler/Disassembler and Tools:
4162 iASL: Implemented the __PATH__ operator, which returns the full pathname
4164 the current source file.
4166 AcpiHelp: Automatically display expanded keyword information for all ASL
4169 Debugger: Add "Template" command to disassemble/dump resource template
4172 Added a new master script to generate and execute the ASLTS test suite.
4173 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
4175 iASL: Fix problem with listing generation during processing of the
4177 operator where AML listing was disabled until the entire Switch block was
4180 iASL: Improve support for semicolon statement terminators. Fix "invalid
4181 character" message for some cases when the semicolon is used. Semicolons
4183 now allowed after every <Term> grammar element. ACPICA BZ 927.
4185 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
4188 Disassembler: Fix problem with disassembly of the DataTableRegion
4190 where an inadvertent "Unhandled deferred opcode" message could be
4193 3) Example Code and Data Size
4195 These are the sizes for the OS-independent acpica.lib produced by the
4196 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4197 includes the debug output trace mechanism and has a much larger code and
4202 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4203 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4205 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4206 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4208 ----------------------------------------
4209 22 September 2011. Summary of changes for version 20110922:
4213 Support for ACPI 5.0 in ACPICA has been underway for several months and
4215 be released at the same time that ACPI 5.0 is officially released.
4217 The ACPI 5.0 specification is on track for release in the next few
4220 1) ACPICA Core Subsystem:
4222 Fixed a problem where the maximum sleep time for the Sleep() operator was
4223 intended to be limited to two seconds, but was inadvertently limited to
4227 Linux and Unix makefiles: Added header file dependencies to ensure
4229 generation of ACPICA core code and utilities. Also simplified the
4231 considerably through the use of the vpath variable to specify search
4235 2) iASL Compiler/Disassembler and Tools:
4237 iASL: Implemented support to check the access length for all fields
4239 access named Resource Descriptor fields. For example, if a resource field
4241 defined to be two bits, a warning is issued if a CreateXxxxField() is
4243 with an incorrect bit length. This is implemented for all current
4245 descriptor names. ACPICA BZ 930.
4247 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
4251 iASL: Fixed a couple of issues associated with variable-length package
4252 objects. 1) properly handle constants like One, Ones, Zero -- do not make
4254 VAR_PACKAGE when these are used as a package length. 2) Allow the
4256 opcode (in addition to PACKAGE) when validating object types for
4260 iASL: Emit statistics for all output files (instead of just the ASL input
4262 AML output). Includes listings, hex files, etc.
4264 iASL: Added -G option to the table compiler to allow the compilation of
4266 ACPI tables. The only part of a table that is required is the standard
4271 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
4273 which also adds correct 64-bit support. Also, now all output filenames
4275 completely lower case.
4277 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
4278 loading table files. A warning is issued for any such tables. The only
4279 exception is an FADT. This also fixes a possible fault when attempting to
4281 non-AML tables. ACPICA BZ 932.
4283 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
4285 missing table terminator could cause a fault when using the -p option.
4287 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
4290 3) Example Code and Data Size
4292 These are the sizes for the OS-independent acpica.lib produced by the
4293 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4294 includes the debug output trace mechanism and has a much larger code and
4298 Previous Release (VC 9.0):
4299 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4300 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4301 Current Release (VC 9.0):
4302 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4303 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4306 ----------------------------------------
4307 23 June 2011. Summary of changes for version 20110623:
4309 1) ACPI CA Core Subsystem:
4311 Updated the predefined name repair mechanism to not attempt repair of a
4313 return object if a _PSS object is present. We can only sort the _TSS
4315 package if there is no _PSS within the same scope. This is because if
4318 present, the ACPI specification dictates that the _TSS Power Dissipation
4320 is to be ignored, and therefore some BIOSs leave garbage values in the
4322 Power field(s). In this case, it is best to just return the _TSS package
4324 is. Reported by, and fixed with assistance from Fenghua Yu.
4326 Added an option to globally disable the control method return value
4328 and repair. This runtime option can be used to disable return value
4331 this is causing a problem on a particular machine. Also added an option
4333 AcpiExec (-dr) to set this disable flag.
4335 All makefiles and project files: Major changes to improve generation of
4337 tools. ACPICA BZ 912:
4338 Reduce default optimization levels to improve compatibility
4339 For Linux, add strict-aliasing=0 for gcc 4
4340 Cleanup and simplify use of command line defines
4341 Cleanup multithread library support
4342 Improve usage messages
4344 Linux-specific header: update handling of THREAD_ID and pthread. For the
4346 bit case, improve casting to eliminate possible warnings, especially with
4350 Example Code and Data Size: These are the sizes for the OS-independent
4351 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4353 version of the code includes the debug output trace mechanism and has a
4355 larger code and data size.
4357 Previous Release (VC 9.0):
4358 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4359 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4360 Current Release (VC 9.0):
4361 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4362 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4364 2) iASL Compiler/Disassembler and Tools:
4366 With this release, a new utility named "acpihelp" has been added to the
4368 package. This utility summarizes the ACPI specification chapters for the
4370 and AML languages. It generates under Linux/Unix as well as Windows, and
4371 provides the following functionality:
4372 Find/display ASL operator(s) -- with description and syntax.
4373 Find/display ASL keyword(s) -- with exact spelling and descriptions.
4374 Find/display ACPI predefined name(s) -- with description, number
4375 of arguments, and the return value data type.
4376 Find/display AML opcode name(s) -- with opcode, arguments, and
4378 Decode/display AML opcode -- with opcode name, arguments, and
4381 Service Layers: Make multi-thread support configurable. Conditionally
4383 the multi-thread support so that threading libraries will not be linked
4386 necessary. The only tool that requires multi-thread support is AcpiExec.
4388 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
4390 Bison appear to want the interface to yyerror to be a const char * (or at
4391 least this is a problem when generating iASL on some systems.) ACPICA BZ
4395 Tools: Fix for systems where O_BINARY is not defined. Only used for
4397 versions of the tools.
4399 ----------------------------------------
4400 27 May 2011. Summary of changes for version 20110527:
4402 1) ACPI CA Core Subsystem:
4404 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
4406 signature. Now, only allow SSDT, OEMx, and a null signature. History:
4407 1) Originally, we checked the table signature for "SSDT" or "PSDT".
4408 (PSDT is now obsolete.)
4409 2) We added support for OEMx tables, signature "OEM" plus a fourth
4410 "don't care" character.
4411 3) Valid tables were encountered with a null signature, so we just
4412 gave up on validating the signature, (05/2008).
4413 4) We encountered non-AML tables such as the MADT, which caused
4414 interpreter errors and kernel faults. So now, we once again allow
4415 only SSDT, OEMx, and now, also a null signature. (05/2011).
4417 Added the missing _TDL predefined name to the global name list in order
4419 enable validation. Affects both the core ACPICA code and the iASL
4422 Example Code and Data Size: These are the sizes for the OS-independent
4423 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4425 version of the code includes the debug output trace mechanism and has a
4427 larger code and data size.
4429 Previous Release (VC 9.0):
4430 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4431 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4432 Current Release (VC 9.0):
4433 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4434 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4436 2) iASL Compiler/Disassembler and Tools:
4438 Debugger/AcpiExec: Implemented support for "complex" method arguments on
4440 debugger command line. This adds support beyond simple integers --
4442 Strings, Buffers, and Packages. Includes support for nested packages.
4443 Increased the default command line buffer size to accommodate these
4445 See the ACPICA reference for details and syntax. ACPICA BZ 917.
4447 Debugger/AcpiExec: Implemented support for "default" method arguments for
4449 Execute/Debug command. Now, the debugger will always invoke a control
4451 with the required number of arguments -- even if the command line
4453 none or insufficient arguments. It uses default integer values for any
4455 arguments. Also fixes a bug where only six method arguments maximum were
4456 supported instead of the required seven.
4458 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
4460 also return status in order to prevent buffer overruns. See the ACPICA
4461 reference for details and syntax. ACPICA BZ 921
4463 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
4464 makefiles to simplify support for the two different but similar parser
4465 generators, bison and yacc.
4467 Updated the generic unix makefile for gcc 4. The default gcc version is
4469 expected to be 4 or greater, since options specific to gcc 4 are used.
4471 ----------------------------------------
4472 13 April 2011. Summary of changes for version 20110413:
4474 1) ACPI CA Core Subsystem:
4476 Implemented support to execute a so-called "orphan" _REG method under the
4478 device. This change will force the execution of a _REG method underneath
4481 device even if there is no corresponding operation region of type
4482 EmbeddedControl. Fixes a problem seen on some machines and apparently is
4483 compatible with Windows behavior. ACPICA BZ 875.
4485 Added more predefined methods that are eligible for automatic NULL
4487 element removal. This change adds another group of predefined names to
4490 of names that can be repaired by having NULL package elements dynamically
4491 removed. This group are those methods that return a single variable-
4493 package containing simple data types such as integers, buffers, strings.
4495 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
4498 and _TZD. ACPICA BZ 914.
4500 Split and segregated all internal global lock functions to a new file,
4503 Updated internal address SpaceID for DataTable regions. Moved this
4506 id in preparation for ACPI 5.0 changes that will include some new space
4509 change should not affect user/host code.
4511 Example Code and Data Size: These are the sizes for the OS-independent
4513 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4515 the code includes the debug output trace mechanism and has a much larger
4520 Previous Release (VC 9.0):
4521 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4522 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4523 Current Release (VC 9.0):
4524 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4525 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4527 2) iASL Compiler/Disassembler and Tools:
4529 iASL/DTC: Major update for new grammar features. Allow generic data types
4531 custom ACPI tables. Field names are now optional. Any line can be split
4533 multiple lines using the continuation char (\). Large buffers now use
4535 continuation character(s) and no colon on the continuation lines. See the
4537 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
4540 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
4542 Since the parser stuffs a "zero" as the return value for these statements
4545 the underlying AML grammar), they were seen as "return with value" by the
4547 semantic checking. They are now seen correctly as "null" return
4550 iASL: Check if a_REG declaration has a corresponding Operation Region.
4552 check for each _REG to ensure that there is in fact a corresponding
4554 region declaration in the same scope. If not, the _REG method is not very
4556 since it probably won't be executed. ACPICA BZ 915.
4558 iASL/DTC: Finish support for expression evaluation. Added a new
4561 that implements c-style operator precedence and parenthesization. ACPICA
4565 Disassembler/DTC: Remove support for () and <> style comments in data
4568 that DTC has full expression support, we don't want to have comment
4571 start with a parentheses or a less-than symbol. Now, only the standard /*
4574 comments are supported, as well as the bracket [] comments.
4576 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
4578 headers in the acpidump file. Update the header validation to support
4580 tables. Problem introduced in previous AcpiXtract version in the change
4582 support "wrong checksum" error messages emitted by acpidump utility.
4584 iASL: Add a * option to generate all template files (as a synonym for
4588 "iasl -T *" or "iasl -T ALL".
4590 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
4592 abort the compiler on "fatal" errors, simply should abort the current
4594 This allows multiple compiles with a single (possibly wildcard) compiler
4597 ----------------------------------------
4598 16 March 2011. Summary of changes for version 20110316:
4600 1) ACPI CA Core Subsystem:
4602 Fixed a problem caused by a _PRW method appearing at the namespace root
4604 during the setup of wake GPEs. A fault could occur if a _PRW directly
4607 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
4609 Implemented support for "spurious" Global Lock interrupts. On some
4611 global lock interrupt can occur without the pending flag being set. Upon
4614 interrupt, we now ensure that a thread is actually waiting for the lock
4616 signaling GL availability. Rafael Wysocki, Bob Moore.
4618 Example Code and Data Size: These are the sizes for the OS-independent
4620 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4622 the code includes the debug output trace mechanism and has a much larger
4627 Previous Release (VC 9.0):
4628 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4629 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4630 Current Release (VC 9.0):
4631 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4632 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4634 2) iASL Compiler/Disassembler and Tools:
4636 Implemented full support for the "SLIC" ACPI table. Includes support in
4638 header files, disassembler, table compiler, and template generator. Bob
4642 AcpiXtract: Correctly handle embedded comments and messages from
4644 Apparently some or all versions of acpidump will occasionally emit a
4647 "Wrong checksum", etc., into the dump file. This was causing problems for
4648 AcpiXtract. ACPICA BZ 905.
4650 iASL: Fix the Linux makefile by removing an inadvertent double file
4654 AcpiExec: Update installation of operation region handlers. Install one
4656 for a user-defined address space. This is used by the ASL test suite
4659 ----------------------------------------
4660 11 February 2011. Summary of changes for version 20110211:
4662 1) ACPI CA Core Subsystem:
4664 Added a mechanism to defer _REG methods for some early-installed
4666 Most user handlers should be installed before call to
4667 AcpiEnableSubsystem.
4668 However, Event handlers and region handlers should be installed after
4669 AcpiInitializeObjects. Override handlers for the "default" regions should
4671 installed early, however. This change executes all _REG methods for the
4672 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
4673 chicken/egg issues between them. ACPICA BZ 848.
4675 Implemented an optimization for GPE detection. This optimization will
4677 ignore GPE registers that contain no enabled GPEs -- there is no need to
4678 read the register since this information is available internally. This
4679 becomes more important on machines with a large GPE space. ACPICA
4681 884. Lin Ming. Suggestion from Joe Liu.
4683 Removed all use of the highly unreliable FADT revision field. The
4685 number in the FADT has been found to be completely unreliable and cannot
4687 trusted. Only the actual table length can be used to infer the version.
4689 change updates the ACPICA core and the disassembler so that both no
4691 even look at the FADT version and instead depend solely upon the FADT
4694 Fix an unresolved name issue for the no-debug and no-error-message source
4695 generation cases. The _AcpiModuleName was left undefined in these cases,
4697 it is actually needed as a parameter to some interfaces. Define
4698 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
4700 Split several large files (makefiles and project files updated)
4701 utglobal.c -> utdecode.c
4702 dbcomds.c -> dbmethod.c dbnames.c
4703 dsopcode.c -> dsargs.c dscontrol.c
4704 dsload.c -> dsload2.c
4705 aslanalyze.c -> aslbtypes.c aslwalks.c
4707 Example Code and Data Size: These are the sizes for the OS-independent
4708 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4709 debug version of the code includes the debug output trace mechanism and
4711 a much larger code and data size.
4713 Previous Release (VC 9.0):
4714 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4715 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4716 Current Release (VC 9.0):
4717 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4718 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4720 2) iASL Compiler/Disassembler and Tools:
4722 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
4723 These are useful C-style macros with the standard definitions. ACPICA
4726 iASL/DTC: Added support for integer expressions and labels. Support for
4728 expressions for all integer fields in all ACPI tables. Support for labels
4730 "generic" portions of tables such as UEFI. See the iASL reference manual.
4732 Debugger: Added a command to display the status of global handlers. The
4733 "handlers" command will display op region, fixed event, and miscellaneous
4734 global handlers. installation status -- and for op regions, whether
4736 or user-installed handler will be used.
4738 iASL: Warn if reserved method incorrectly returns a value. Many
4740 names are defined such that they do not return a value. If implemented as
4742 method, issue a warning if such a name explicitly returns a value. ACPICA
4745 iASL: Added detection of GPE method name conflicts. Detects a conflict
4747 there are two GPE methods of the form _Lxy and _Exy in the same scope.
4749 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
4751 iASL/DTC: Fixed a couple input scanner issues with comments and line
4752 numbers. Comment remover could get confused and miss a comment ending.
4754 a problem with line counter maintenance.
4756 iASL/DTC: Reduced the severity of some errors from fatal to error. There
4758 no need to abort on simple errors within a field definition.
4760 Debugger: Simplified the output of the help command. All help output now
4762 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
4764 ----------------------------------------
4765 12 January 2011. Summary of changes for version 20110112:
4767 1) ACPI CA Core Subsystem:
4769 Fixed a race condition between method execution and namespace walks that
4771 possibly cause a fault. The problem was apparently introduced in version
4772 20100528 as a result of a performance optimization that reduces the
4775 namespace walks upon method exit by using the delete_namespace_subtree
4776 function instead of the delete_namespace_by_owner function used
4778 Bug is a missing namespace lock in the delete_namespace_subtree function.
4779 dana.myers@oracle.com
4781 Fixed several issues and a possible fault with the automatic "serialized"
4782 method support. History: This support changes a method to "serialized" on
4784 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
4785 possibility that it cannot handle reentrancy. This fix repairs a couple
4787 issues seen in the field, especially on machines with many cores:
4789 1) Delete method children only upon the exit of the last thread,
4790 so as to not delete objects out from under other running threads
4791 (and possibly causing a fault.)
4792 2) Set the "serialized" bit for the method only upon the exit of the
4793 Last thread, so as to not cause deadlock when running threads
4795 3) Cleanup the use of the AML "MethodFlags" and internal method flags
4796 so that there is no longer any confusion between the two.
4798 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
4800 Debugger: Now lock the namespace for duration of a namespace dump.
4802 issues if the namespace is changing dynamically underneath the debugger.
4803 Especially affects temporary namespace nodes, since the debugger displays
4806 Updated the ordering of include files. The ACPICA headers should appear
4807 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
4809 any necessary compiler-specific defines, etc. Affects the ACPI-related
4813 Updated all ACPICA copyrights and signons to 2011. Added the 2011
4815 to all module headers and signons, including the Linux header. This
4817 virtually every file in the ACPICA core subsystem, iASL compiler, and all
4820 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
4821 project files for VC++ 6.0 are now obsolete. New project files can be
4823 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
4826 Example Code and Data Size: These are the sizes for the OS-independent
4827 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4828 debug version of the code includes the debug output trace mechanism and
4830 much larger code and data size.
4832 Previous Release (VC 6.0):
4833 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4834 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4835 Current Release (VC 9.0):
4836 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4837 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4839 2) iASL Compiler/Disassembler and Tools:
4841 iASL: Added generic data types to the Data Table compiler. Add "generic"
4843 types such as UINT32, String, Unicode, etc., to simplify the generation
4845 platform-defined tables such as UEFI. Lin Ming.
4847 iASL: Added listing support for the Data Table Compiler. Adds listing
4849 (-l) to display actual binary output for each line of input code.
4851 ----------------------------------------
4852 09 December 2010. Summary of changes for version 20101209:
4854 1) ACPI CA Core Subsystem:
4856 Completed the major overhaul of the GPE support code that was begun in
4858 2010. Major features include: removal of _PRW execution in ACPICA (host
4859 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
4860 changes to existing interfaces, simplification of GPE handler operation,
4862 a handful of new interfaces:
4868 One new file, evxfgpe.c to consolidate all external GPE interfaces.
4870 See the ACPICA Programmer Reference for full details and programming
4871 information. See the new section 4.4 "General Purpose Event (GPE)
4873 for a full overview, and section 8.7 "ACPI General Purpose Event
4875 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
4877 Bob Moore, Rafael Wysocki.
4879 Implemented a new GPE feature for Windows compatibility, the "Implicit
4881 GPE Notify". This feature will automatically issue a Notify(2) on a
4883 when a Wake GPE is received if there is no corresponding GPE method or
4884 handler. ACPICA BZ 870.
4886 Fixed a problem with the Scope() operator during table parse and load
4888 During load phase (table load or method execution), the scope operator
4890 not enter the target into the namespace. Instead, it should open a new
4892 at the target location. Linux BZ 19462, ACPICA BZ 882.
4894 Example Code and Data Size: These are the sizes for the OS-independent
4895 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4896 debug version of the code includes the debug output trace mechanism and
4898 much larger code and data size.
4901 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4902 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4904 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4905 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4907 2) iASL Compiler/Disassembler and Tools:
4909 iASL: Relax the alphanumeric restriction on _CID strings. These strings
4911 "bus-specific" per the ACPI specification, and therefore any characters
4913 acceptable. The only checks that can be performed are for a null string
4915 perhaps for a leading asterisk. ACPICA BZ 886.
4917 iASL: Fixed a problem where a syntax error that caused a premature EOF
4918 condition on the source file emitted a very confusing error message. The
4919 premature EOF is now detected correctly. ACPICA BZ 891.
4921 Disassembler: Decode the AccessSize within a Generic Address Structure
4923 access, word access, etc.) Note, this field does not allow arbitrary bit
4924 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
4926 New: AcpiNames utility - Example namespace dump utility. Shows an example
4928 ACPICA configuration for a minimal namespace dump utility. Uses table and
4929 namespace managers, but no AML interpreter. Does not add any
4931 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
4932 partition and configure ACPICA. ACPICA BZ 883.
4934 AML Debugger: Increased the debugger buffer size for method return
4936 Was 4K, increased to 16K. Also enhanced error messages for debugger
4938 execution, including the buffer overflow case.
4940 ----------------------------------------
4941 13 October 2010. Summary of changes for version 20101013:
4943 1) ACPI CA Core Subsystem:
4945 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
4947 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
4948 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
4950 Changed the type of the predefined namespace object _TZ from ThermalZone
4952 Device. This was found to be confusing to the host software that
4954 the various thermal zones, since _TZ is not really a ThermalZone.
4957 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
4960 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
4961 string is "Windows 2006 SP2".
4963 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
4965 code automatically repairs _HID-related strings, this type of code is no
4966 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
4969 Example Code and Data Size: These are the sizes for the OS-independent
4970 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4971 debug version of the code includes the debug output trace mechanism and
4973 much larger code and data size.
4976 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4977 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4979 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4980 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4982 2) iASL Compiler/Disassembler and Tools:
4984 iASL: Implemented additional compile-time validation for _HID strings.
4986 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
4989 the string must be exactly seven or eight characters. For both _HID and
4991 strings, all characters must be alphanumeric. ACPICA BZ 874.
4993 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
4994 descriptors that are mostly or all zeros, with the expectation that they
4996 be filled in at runtime. iASL now allows this as long as there is a
4998 tag" (name) associated with the descriptor, which gives the ASL a handle
4999 needed to modify the descriptor. ACPICA BZ 873.
5001 Added single-thread support to the generic Unix application OSL.
5003 for iASL support, this change removes the use of semaphores in the
5005 threaded ACPICA tools/applications - increasing performance. The
5006 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
5007 option. ACPICA BZ 879.
5009 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
5011 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
5013 iASL: Moved all compiler messages to a new file, aslmessages.h.
5015 ----------------------------------------
5016 15 September 2010. Summary of changes for version 20100915:
5018 1) ACPI CA Core Subsystem:
5020 Removed the AcpiOsDerivePciId OSL interface. The various host
5022 of this function were not OS-dependent and are now obsolete and can be
5023 removed from all host OSLs. This function has been replaced by
5024 AcpiHwDerivePciId, which is now part of the ACPICA core code.
5025 AcpiHwDerivePciId has been implemented without recursion. Adds one new
5026 module, hwpci.c. ACPICA BZ 857.
5028 Implemented a dynamic repair for _HID and _CID strings. The following
5029 problems are now repaired at runtime: 1) Remove a leading asterisk in the
5030 string, and 2) the entire string is uppercased. Both repairs are in
5031 accordance with the ACPI specification and will simplify host driver
5035 The ACPI_THREAD_ID type is no longer configurable, internally it is now
5036 always UINT64. This simplifies the ACPICA code, especially any printf
5038 UINT64 is the only common data type for all thread_id types across all
5039 operating systems. It is now up to the host OSL to cast the native
5041 type to UINT64 before returning the value to ACPICA (via
5043 Lin Ming, Bob Moore.
5045 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
5047 keyword is not standard across compilers, and this type allows inline to
5049 configured on a per-compiler basis. Lin Ming.
5051 Made the system global AcpiGbl_SystemAwakeAndRunning publically
5053 Added an extern for this boolean in acpixf.h. Some hosts utilize this
5055 during suspend/restore operations. ACPICA BZ 869.
5057 All code that implements error/warning messages with the "ACPI:" prefix
5059 been moved to a new module, utxferror.c.
5061 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
5063 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
5065 Example Code and Data Size: These are the sizes for the OS-independent
5066 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5067 debug version of the code includes the debug output trace mechanism and
5069 much larger code and data size.
5072 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5073 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5075 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5076 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5078 2) iASL Compiler/Disassembler and Tools:
5080 iASL/Disassembler: Write ACPI errors to stderr instead of the output
5082 This keeps the output files free of random error messages that may
5084 from within the namespace/interpreter code. Used this opportunity to
5086 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
5087 866. Lin Ming, Bob Moore.
5089 Tools: update some printfs for ansi warnings on size_t. Handle width
5091 of size_t on 32-bit versus 64-bit generations. Lin Ming.
5093 ----------------------------------------
5094 06 August 2010. Summary of changes for version 20100806:
5096 1) ACPI CA Core Subsystem:
5098 Designed and implemented a new host interface to the _OSI support code.
5100 will allow the host to dynamically add or remove multiple _OSI strings,
5102 well as install an optional handler that is called for each _OSI
5104 Also added a new AML debugger command, 'osi' to display and modify the
5106 _OSI string table, and test support in the AcpiExec utility. See the
5108 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
5110 AcpiInstallInterface - Add an _OSI string.
5111 AcpiRemoveInterface - Delete an _OSI string.
5112 AcpiInstallInterfaceHandler - Install optional _OSI handler.
5114 AcpiOsValidateInterface - no longer used.
5116 source/components/utilities/utosi.c
5118 Re-introduced the support to enable multi-byte transfers for Embedded
5119 Controller (EC) operation regions. A reported problem was found to be a
5121 in the host OS, not in the multi-byte support. Previously, the maximum
5123 size passed to the EC operation region handler was a single byte. There
5125 often EC Fields larger than one byte that need to be transferred, and it
5127 useful for the EC driver to lock these as a single transaction. This
5129 enables single transfers larger than 8 bits. This effectively changes the
5130 access to the EC space from ByteAcc to AnyAcc, and will probably require
5131 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
5133 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
5135 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
5136 prototype in acpiosxf.h had the output value pointer as a (void *).
5137 It should be a (UINT64 *). This may affect some host OSL code.
5139 Fixed a couple problems with the recently modified Linux makefiles for
5141 and AcpiExec. These new makefiles place the generated object files in the
5142 local directory so that there can be no collisions between the files that
5144 shared between them that are compiled with different options.
5146 Example Code and Data Size: These are the sizes for the OS-independent
5147 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5148 debug version of the code includes the debug output trace mechanism and
5150 much larger code and data size.
5153 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5154 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5156 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5157 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5159 2) iASL Compiler/Disassembler and Tools:
5161 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
5163 namespace from and disassemble an entire group of AML files. Useful for
5164 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
5166 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
5168 iASL: Allow multiple invocations of -e option. This change allows
5170 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
5174 ----------------------------------------
5175 02 July 2010. Summary of changes for version 20100702:
5177 1) ACPI CA Core Subsystem:
5179 Implemented several updates to the recently added GPE reference count
5180 support. The model for "wake" GPEs is changing to give the host OS
5182 control of these GPEs. Eventually, the ACPICA core will not execute any
5184 methods, since the host already must execute them. Also, additional
5186 were made to help ensure that the reference counts are kept in proper
5187 synchronization with reality. Rafael J. Wysocki.
5189 1) Ensure that GPEs are not enabled twice during initialization.
5190 2) Ensure that GPE enable masks stay in sync with the reference count.
5191 3) Do not inadvertently enable GPEs when writing GPE registers.
5192 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
5193 interface. This interface will set or clear individual GPEs for wakeup.
5194 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
5196 are now used for "runtime" GPEs only.
5198 Changed the behavior of the GPE install/remove handler interfaces. The
5201 no longer disabled during this process, as it was found to cause problems
5203 some machines. Rafael J. Wysocki.
5205 Reverted a change introduced in version 20100528 to enable Embedded
5206 Controller multi-byte transfers. This change was found to cause problems
5208 Index Fields and possibly Bank Fields. It will be reintroduced when these
5209 problems have been resolved.
5211 Fixed a problem with references to Alias objects within Package Objects.
5213 reference to an Alias within the definition of a Package was not always
5214 resolved properly. Aliases to objects like Processors, Thermal zones,
5216 were resolved to the actual object instead of a reference to the object
5219 should be. Package objects are only allowed to contain integer, string,
5220 buffer, package, and reference objects. Redhat bugzilla 608648.
5222 Example Code and Data Size: These are the sizes for the OS-independent
5223 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5224 debug version of the code includes the debug output trace mechanism and
5226 much larger code and data size.
5229 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5230 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5232 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5233 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5235 2) iASL Compiler/Disassembler and Tools:
5237 iASL: Implemented a new compiler subsystem to allow definition and
5238 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
5240 are called "ACPI Data Tables", and the new compiler is the "Data Table
5241 Compiler". This compiler is intended to simplify the existing error-prone
5242 process of creating these tables for the BIOS, as well as allowing the
5243 disassembly, modification, recompilation, and override of existing ACPI
5245 tables. See the iASL User Guide for detailed information.
5247 iASL: Implemented a new Template Generator option in support of the new
5249 Table Compiler. This option will create examples of all known ACPI tables
5250 that can be used as the basis for table development. See the iASL
5251 documentation and the -T option.
5253 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
5256 Updated the Linux makefiles for iASL and AcpiExec to place the generated
5257 object files in the local directory so that there can be no collisions
5258 between the shared files between them that are generated with different
5261 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
5263 the #define __APPLE__ to enable this support.
5265 ----------------------------------------
5266 28 May 2010. Summary of changes for version 20100528:
5268 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
5269 available at www.acpi.info. This is primarily an errata release.
5271 1) ACPI CA Core Subsystem:
5273 Undefined ACPI tables: We are looking for the definitions for the
5275 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
5277 Implemented support to enable multi-byte transfers for Embedded
5279 (EC) operation regions. Previously, the maximum data size passed to the
5281 operation region handler was a single byte. There are often EC Fields
5283 than one byte that need to be transferred, and it is useful for the EC
5285 to lock these as a single transaction. This change enables single
5287 larger than 8 bits. This effectively changes the access to the EC space
5289 ByteAcc to AnyAcc, and will probably require changes to the host OS
5291 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
5293 transfers. Alexey Starikovskiy, Lin Ming
5295 Implemented a performance enhancement for namespace search and access.
5297 change enhances the performance of namespace searches and walks by adding
5299 backpointer to the parent in each namespace node. On large namespaces,
5301 change can improve overall ACPI performance by up to 9X. Adding a pointer
5303 each namespace node increases the overall size of the internal namespace
5305 about 5%, since each namespace entry usually consists of both a namespace
5306 node and an ACPI operand object. However, this is the first growth of the
5307 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
5309 Implemented a performance optimization that reduces the number of
5311 walks. On control method exit, only walk the namespace if the method is
5313 to have created namespace objects outside of its local scope. Previously,
5315 entire namespace was traversed on each control method exit. This change
5317 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
5320 Added support to truncate I/O addresses to 16 bits for Windows
5322 Some ASL code has been seen in the field that inadvertently has bits set
5323 above bit 15. This feature is optional and is enabled if the BIOS
5325 any Windows OSI strings. It can also be enabled by the host OS. Matthew
5328 Added support to limit the maximum time for the ASL Sleep() operator. To
5329 prevent accidental deep sleeps, limit the maximum time that Sleep() will
5330 actually sleep. Configurable, the default maximum is two seconds. ACPICA
5333 Added run-time validation support for the _WDG and_WED Microsoft
5335 methods. These objects are defined by "Windows Instrumentation", and are
5337 part of the ACPI spec. ACPICA BZ 860.
5339 Expanded all statistic counters used during namespace and device
5340 initialization from 16 to 32 bits in order to support very large
5343 Replaced all instances of %d in printf format specifiers with %u since
5345 all integers in ACPICA are unsigned.
5347 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
5351 Example Code and Data Size: These are the sizes for the OS-independent
5352 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5353 debug version of the code includes the debug output trace mechanism and
5355 much larger code and data size.
5358 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5359 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5361 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5362 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5364 2) iASL Compiler/Disassembler and Tools:
5366 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
5367 methods. These objects are defined by "Windows Instrumentation", and are
5369 part of the ACPI spec. ACPICA BZ 860.
5371 AcpiExec: added option to disable the memory tracking mechanism. The -dt
5372 option will disable the tracking mechanism, which improves performance
5375 AcpiExec: Restructured the command line options into -d (disable) and -e
5378 ----------------------------------------
5379 28 April 2010. Summary of changes for version 20100428:
5381 1) ACPI CA Core Subsystem:
5383 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
5384 including FADT-based and GPE Block Devices, execute any _PRW methods in
5386 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
5387 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
5388 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
5389 Devices. Provides compatibility with other ACPI implementations. Two new
5390 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
5393 Fixed a regression introduced in version 20100331 within the table
5395 where initial table loading could fail. This was introduced in the fix
5397 AcpiReallocateRootTable. Also, renamed some of fields in the table
5399 data structures to clarify their meaning and use.
5401 Fixed a possible allocation overrun during internal object copy in
5402 AcpiUtCopySimpleObject. The original code did not correctly handle the
5404 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
5407 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
5408 possible access beyond end-of-allocation. Also, now fully validate
5410 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
5412 Example Code and Data Size: These are the sizes for the OS-independent
5413 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5414 debug version of the code includes the debug output trace mechanism and
5416 much larger code and data size.
5419 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5420 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5422 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5423 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5425 2) iASL Compiler/Disassembler and Tools:
5427 iASL: Implemented Min/Max/Len/Gran validation for address resource
5428 descriptors. This change implements validation for the address fields
5430 are common to all address-type resource descriptors. These checks are
5431 implemented: Checks for valid Min/Max, length within the Min/Max window,
5432 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
5434 table 6-40 in the ACPI 4.0a specification. Also split the large
5436 and aslrestype2.c files into five new files. ACPICA BZ 840.
5438 iASL: Added support for the _Wxx predefined names. This support was
5440 and these names were not recognized by the compiler as valid predefined
5441 names. ACPICA BZ 851.
5443 iASL: Added an error for all predefined names that are defined to return
5445 value and thus must be implemented as Control Methods. These include all
5447 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
5448 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
5450 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
5452 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
5454 dynamically loaded via the Load() operator. Also cleaned up output for
5457 ta and -tc options. ACPICA BZ 853.
5459 Tests: Added a new file with examples of extended iASL error checking.
5460 Demonstrates the advanced error checking ability of the iASL compiler.
5461 Available at tests/misc/badcode.asl.
5463 ----------------------------------------
5464 31 March 2010. Summary of changes for version 20100331:
5466 1) ACPI CA Core Subsystem:
5468 Completed a major update for the GPE support in order to improve support
5470 shared GPEs and to simplify both host OS and ACPICA code. Added a
5472 count mechanism to support shared GPEs that require multiple device
5474 Several external interfaces have changed. One external interface has been
5475 removed. One new external interface was added. Most of the GPE external
5476 interfaces now use the GPE spinlock instead of the events mutex (and the
5477 Flags parameter for many GPE interfaces has been removed.) See the
5479 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
5481 Wysocki. ACPICA BZ 831.
5484 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
5490 Implemented write support for DataTable operation regions. These regions
5492 defined via the DataTableRegion() operator. Previously, only read support
5494 implemented. The ACPI specification allows DataTableRegions to be
5498 Implemented a new subsystem option to force a copy of the DSDT to local
5499 memory. Optionally copy the entire DSDT to local memory (instead of
5501 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
5503 the original DSDT, creating the need for this option. Default is FALSE,
5507 Implemented detection of a corrupted or replaced DSDT. This change adds
5508 support to detect a DSDT that has been corrupted and/or replaced from
5510 the OS (by firmware). This is typically catastrophic for the system, but
5512 been seen on some machines. Once this problem has been detected, the DSDT
5513 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
5515 Fixed two problems with AcpiReallocateRootTable during the root table
5517 When copying the root table to the new allocation, the length used was
5518 incorrect. The new size was used instead of the current table size,
5520 too much data was copied. Also, the count of available slots for ACPI
5522 was not set correctly. Alexey Starikovskiy, Bob Moore.
5524 Example Code and Data Size: These are the sizes for the OS-independent
5525 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5526 debug version of the code includes the debug output trace mechanism and
5528 much larger code and data size.
5531 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5532 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5534 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5535 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5537 2) iASL Compiler/Disassembler and Tools:
5539 iASL: Implement limited typechecking for values returned from predefined
5540 control methods. The type of any returned static (unnamed) object is now
5541 validated. For example, Return(1). ACPICA BZ 786.
5543 iASL: Fixed a predefined name object verification regression. Fixes a
5545 introduced in version 20100304. An error is incorrectly generated if a
5546 predefined name is declared as a static named object with a value defined
5547 using the keywords "Zero", "One", or "Ones". Lin Ming.
5549 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
5551 reducing the requested registry access rights. ACPICA BZ 842.
5553 Disassembler: fixed a possible fault when generating External()
5555 Introduced in commit ae7d6fd: Properly handle externals with parent-
5557 (carat). Fixes a string length allocation calculation. Lin Ming.
5559 ----------------------------------------
5560 04 March 2010. Summary of changes for version 20100304:
5562 1) ACPI CA Core Subsystem:
5564 Fixed a possible problem with the AML Mutex handling function
5565 AcpiExReleaseMutex where the function could fault under the very rare
5566 condition when the interpreter has blocked, the interpreter lock is
5568 the interpreter is then reentered via the same thread, and attempts to
5569 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
5573 Implemented additional configuration support for the AML "Debug Object".
5574 Output from the debug object can now be enabled via a global variable,
5575 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
5577 This debug output is now available in the release version of ACPICA
5579 of just the debug version. Also, the entire debug output module can now
5581 configured out of the ACPICA build if desired. One new file added,
5582 executer/exdebug.c. Lin Ming, Bob Moore.
5584 Added header support for the ACPI MCHI table (Management Controller Host
5585 Interface Table). This table was added in ACPI 4.0, but the defining
5587 has only recently become available.
5589 Standardized output of integer values for ACPICA warnings/errors. Always
5591 0x prefix for hex output, always use %u for unsigned integer decimal
5593 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
5595 invocations.) These invocations were converted from the original
5596 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
5598 Example Code and Data Size: These are the sizes for the OS-independent
5599 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5600 debug version of the code includes the debug output trace mechanism and
5602 much larger code and data size.
5605 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5606 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5608 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5609 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5611 2) iASL Compiler/Disassembler and Tools:
5613 iASL: Implemented typechecking support for static (non-control method)
5614 predefined named objects that are declared with the Name() operator. For
5615 example, the type of this object is now validated to be of type Integer:
5616 Name(_BBN, 1). This change migrates the compiler to using the core
5618 name table instead of maintaining a local version. Added a new file,
5619 aslpredef.c. ACPICA BZ 832.
5621 Disassembler: Added support for the ACPI 4.0 MCHI table.
5623 ----------------------------------------
5624 21 January 2010. Summary of changes for version 20100121:
5626 1) ACPI CA Core Subsystem:
5628 Added the 2010 copyright to all module headers and signons. This affects
5629 virtually every file in the ACPICA core subsystem, the iASL compiler, the
5630 tools/utilities, and the test suites.
5632 Implemented a change to the AcpiGetDevices interface to eliminate
5634 invocations of the _STA method. In the case where a specific _HID is
5635 requested, do not run _STA until a _HID match is found. This eliminates
5636 potentially dozens of _STA calls during a search for a particular
5638 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
5640 Implemented an additional repair for predefined method return values.
5642 to repair unexpected NULL elements within returned Package objects.
5645 Integer of value zero, a NULL String, or a zero-length Buffer as
5647 ACPICA BZ 818. Lin Ming, Bob Moore.
5649 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
5651 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
5653 64-bit AML integers). It is now obsolete and this change removes it from
5655 ACPICA code base, replaced by UINT64. The original typedef has been
5657 for now for compatibility with existing device driver code. ACPICA BZ
5660 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
5662 the parse tree object.
5664 Added additional warning options for the gcc-4 generation. Updated the
5666 accordingly. This includes some code restructuring to eliminate
5668 code, elimination of some gotos, elimination of unused return values,
5670 additional casting, and removal of redundant declarations.
5672 Example Code and Data Size: These are the sizes for the OS-independent
5673 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5674 debug version of the code includes the debug output trace mechanism and
5676 much larger code and data size.
5679 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
5680 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
5682 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5683 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5685 2) iASL Compiler/Disassembler and Tools:
5687 No functional changes for this release.
5689 ----------------------------------------
5690 14 December 2009. Summary of changes for version 20091214:
5692 1) ACPI CA Core Subsystem:
5694 Enhanced automatic data type conversions for predefined name repairs.
5696 change expands the automatic repairs/conversions for predefined name
5698 values to make Integers, Strings, and Buffers fully interchangeable.
5701 Buffer can be converted to a Package of Integers if necessary. The
5703 module was completely restructured. Lin Ming, Bob Moore.
5705 Implemented automatic removal of null package elements during predefined
5707 repairs. This change will automatically remove embedded and trailing NULL
5708 package elements from returned package objects that are defined to
5711 variable number of sub-packages. The driver is then presented with a
5713 with no null elements to deal with. ACPICA BZ 819.
5715 Implemented a repair for the predefined _FDE and _GTM names. The expected
5716 return value for both names is a Buffer of 5 DWORDs. This repair fixes
5718 possible problems (both seen in the field), where a package of integers
5720 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
5723 Implemented additional module-level code support. This change will
5725 execute module-level code that is not at the root of the namespace (under
5727 Device object, etc.). Now executes the code within the current scope
5729 of the root. ACPICA BZ 762. Lin Ming.
5731 Fixed possible mutex acquisition errors when running _REG methods. Fixes
5733 problem where mutex errors can occur when running a _REG method that is
5735 the same scope as a method-defined operation region or an operation
5737 under a module-level IF block. This type of code is rare, so the problem
5739 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
5741 Fixed a possible memory leak during module-level code execution. An
5743 could be leaked for each block of executed module-level code if the
5744 interpreter slack mode is enabled This change deletes any implicitly
5746 object from the module-level code block. Lin Ming.
5748 Removed messages for successful predefined repair(s). The repair
5750 was considered too wordy. Now, messages are only unconditionally emitted
5752 the return object cannot be repaired. Existing messages for successful
5753 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
5756 Example Code and Data Size: These are the sizes for the OS-independent
5757 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5758 debug version of the code includes the debug output trace mechanism and
5760 much larger code and data size.
5763 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
5764 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
5766 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
5767 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
5769 2) iASL Compiler/Disassembler and Tools:
5771 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
5773 were no longer automatically removed at the termination of the compile.
5775 acpiexec: Implemented the -f option to specify default region fill value.
5776 This option specifies the value used to initialize buffers that simulate
5777 operation regions. Default value is zero. Useful for debugging problems
5779 depend on a specific initial value for a region or field.
5781 ----------------------------------------
5782 12 November 2009. Summary of changes for version 20091112:
5784 1) ACPI CA Core Subsystem:
5786 Implemented a post-order callback to AcpiWalkNamespace. The existing
5787 interface only has a pre-order callback. This change adds an additional
5788 parameter for a post-order callback which will be more useful for bus
5790 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
5792 Modified the behavior of the operation region memory mapping cache for
5793 SystemMemory. Ensure that the memory mappings created for operation
5795 do not cross 4K page boundaries. Crossing a page boundary while mapping
5796 regions can cause kernel warnings on some hosts if the pages have
5798 attributes. Such regions are probably BIOS bugs, and this is the
5800 Linux BZ 14445. Lin Ming.
5802 Implemented an automatic repair for predefined methods that must return
5803 sorted lists. This change will repair (by sorting) packages returned by
5805 _PSS, and _TSS. Drivers can now assume that the packages are correctly
5807 and do not contain NULL package elements. Adds one new file,
5808 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
5810 Fixed a possible fault during predefined name validation if a return
5812 object contains NULL elements. Also adds a warning if a NULL element is
5813 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
5815 include repair or removal of all such NULL elements where possible.
5817 Implemented additional module-level executable AML code support. This
5819 will execute module-level code that is not at the root of the namespace
5820 (under a Device object, etc.) at table load time. Module-level executable
5822 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
5824 Implemented a new internal function to create Integer objects. This
5826 simplifies miscellaneous object creation code. ACPICA BZ 823.
5828 Reduced the severity of predefined repair messages, Warning to Info.
5830 the object was successfully repaired, a warning is too severe. Reduced to
5832 info message for now. These messages may eventually be changed to debug-
5836 Example Code and Data Size: These are the sizes for the OS-independent
5837 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5838 debug version of the code includes the debug output trace mechanism and
5840 much larger code and data size.
5843 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5844 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5846 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
5847 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
5849 2) iASL Compiler/Disassembler and Tools:
5851 iASL: Implemented Switch() with While(1) so that Break works correctly.
5853 change correctly implements the Switch operator with a surrounding
5855 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
5857 iASL: Added a message if a package initializer list is shorter than
5859 length. Adds a new remark for a Package() declaration if an initializer
5861 exists, but is shorter than the declared length of the package. Although
5862 technically legal, this is probably a coding error and it is seen in the
5863 field. ACPICA BZ 815. Lin Ming, Bob Moore.
5865 iASL: Fixed a problem where the compiler could fault after the maximum
5867 of errors was reached (200).
5869 acpixtract: Fixed a possible warning for pointer cast if the compiler
5871 level set very high.
5873 ----------------------------------------
5874 13 October 2009. Summary of changes for version 20091013:
5876 1) ACPI CA Core Subsystem:
5878 Fixed a problem where an Operation Region _REG method could be executed
5880 than once. If a custom address space handler is installed by the host
5882 the "initialize operation regions" phase of the ACPICA initialization,
5884 _REG methods for that address space could be executed twice. This change
5885 fixes the problem. ACPICA BZ 427. Lin Ming.
5887 Fixed a possible memory leak for the Scope() ASL operator. When the exact
5888 invocation of "Scope(\)" is executed (change scope to root), one internal
5889 operand object was leaked. Lin Ming.
5891 Implemented a run-time repair for the _MAT predefined method. If the _MAT
5892 return value is defined as a Field object in the AML, and the field
5893 size is less than or equal to the default width of an integer (32 or
5895 can incorrectly return an Integer instead of a Buffer. ACPICA now
5896 automatically repairs this problem. ACPICA BZ 810.
5898 Implemented a run-time repair for the _BIF and _BIX predefined methods.
5900 "OEM Information" field is often incorrectly returned as an Integer with
5901 value zero if the field is not supported by the platform. This is due to
5903 ambiguity in the ACPI specification. The field should always be a string.
5904 ACPICA now automatically repairs this problem by returning a NULL string
5905 within the returned Package. ACPICA BZ 807.
5907 Example Code and Data Size: These are the sizes for the OS-independent
5908 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5909 debug version of the code includes the debug output trace mechanism and
5911 much larger code and data size.
5914 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5915 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5917 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5918 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5920 2) iASL Compiler/Disassembler and Tools:
5922 Disassembler: Fixed a problem where references to external symbols that
5923 contained one or more parent-prefixes (carats) were not handled
5925 possibly causing a fault. ACPICA BZ 806. Lin Ming.
5927 Disassembler: Restructured the code so that all functions that handle
5928 external symbols are in a single module. One new file is added,
5931 AML Debugger: Added a max count argument for the Batch command (which
5932 executes multiple predefined methods within the namespace.)
5934 iASL: Updated the compiler documentation (User Reference.) Available at
5935 http://www.acpica.org/documentation/. ACPICA BZ 750.
5937 AcpiXtract: Updated for Lint and other formatting changes. Close all open
5940 ----------------------------------------
5941 03 September 2009. Summary of changes for version 20090903:
5943 1) ACPI CA Core Subsystem:
5945 For Windows Vista compatibility, added the automatic execution of an _INI
5946 method located at the namespace root (\_INI). This method is executed at
5947 table load time. This support is in addition to the automatic execution
5949 \_SB._INI. Lin Ming.
5951 Fixed a possible memory leak in the interpreter for AML package objects
5953 the package initializer list is longer than the defined size of the
5955 This apparently can only happen if the BIOS changes the package size on
5957 fly (seen in a _PSS object), as ASL compilers do not allow this. The
5958 interpreter will truncate the package to the defined size (and issue an
5960 message), but previously could leave the extra objects undeleted if they
5962 pre-created during the argument processing (such is the case if the
5964 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
5966 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
5967 This has been reported in the field. Previously, ACPICA would zero out
5969 buffer/string. Now, the operation is treated as a noop. Provides Windows
5970 compatibility. ACPICA BZ 803. Lin Ming.
5972 Removed an extraneous error message for ASL constructs of the form
5973 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
5975 are seen in many BIOSs and are once again treated as NOOPs and no error
5977 emitted when they are encountered. ACPICA BZ 785.
5979 Fixed an extraneous warning message if a _DSM reserved method returns a
5980 Package object. _DSM can return any type of object, so validation on the
5981 return type cannot be performed. ACPICA BZ 802.
5983 Example Code and Data Size: These are the sizes for the OS-independent
5984 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5985 debug version of the code includes the debug output trace mechanism and
5987 much larger code and data size.
5990 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5991 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5993 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5994 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5996 2) iASL Compiler/Disassembler and Tools:
5998 iASL: Fixed a problem with the use of the Alias operator and Resource
5999 Templates. The correct alias is now constructed and no error is emitted.
6002 iASL: Implemented the -I option to specify additional search directories
6004 include files. Allows multiple additional search paths for include files.
6005 Directories are searched in the order specified on the command line
6007 the local directory is searched.) ACPICA BZ 800.
6009 iASL: Fixed a problem where the full pathname for include files was not
6010 emitted for warnings/errors. This caused the IDE support to not work
6011 properly. ACPICA BZ 765.
6013 iASL: Implemented the -@ option to specify a Windows-style response file
6014 containing additional command line options. ACPICA BZ 801.
6016 AcpiExec: Added support to load multiple AML files simultaneously (such
6019 DSDT and multiple SSDTs). Also added support for wildcards within the AML
6020 pathname. These features allow all machine tables to be easily loaded and
6021 debugged together. ACPICA BZ 804.
6023 Disassembler: Added missing support for disassembly of HEST table Error
6027 ----------------------------------------
6028 30 July 2009. Summary of changes for version 20090730:
6030 The ACPI 4.0 implementation for ACPICA is complete with this release.
6032 1) ACPI CA Core Subsystem:
6034 ACPI 4.0: Added header file support for all new and changed ACPI tables.
6035 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
6037 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
6039 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
6041 have been some ACPI 4.0 changes to other existing tables. Split the large
6042 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
6044 ACPI 4.0: Implemented predefined name validation for all new names. There
6046 31 new names in ACPI 4.0. The predefined validation module was split into
6048 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
6050 Implemented support for so-called "module-level executable code". This is
6051 executable AML code that exists outside of any control method and is
6053 to be executed at table load time. Although illegal since ACPI 2.0, this
6055 of code still exists and is apparently still being created. Blocks of
6057 code are now detected and executed as intended. Currently, the code
6059 must exist under either an If, Else, or While construct; these are the
6060 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
6062 Implemented an automatic dynamic repair for predefined names that return
6063 nested Package objects. This applies to predefined names that are defined
6065 return a variable-length Package of sub-packages. If the number of sub-
6066 packages is one, BIOS code is occasionally seen that creates a simple
6068 package with no sub-packages. This code attempts to fix the problem by
6069 wrapping a new package object around the existing package. These methods
6071 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
6075 Fixed a regression introduced in 20090625 for the AcpiGetDevices
6077 The _HID/_CID matching was broken and no longer matched IDs correctly.
6081 Fixed a problem with AcpiReset where the reset would silently fail if the
6082 register was one of the protected I/O ports. AcpiReset now bypasses the
6084 validation mechanism. This may eventually be driven into the
6088 Fixed a regression related to the recent update of the AcpiRead/Write
6089 interfaces. A sleep/suspend could fail if the optional PM2 Control
6091 does not exist during an attempt to write the Bus Master Arbitration bit.
6092 (However, some hosts already delete the code that writes this bit, and
6094 code may in fact be obsolete at this date.) ACPICA BZ 799.
6096 Fixed a problem where AcpiTerminate could fault if inadvertently called
6098 in succession. ACPICA BZ 795.
6100 Example Code and Data Size: These are the sizes for the OS-independent
6101 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6102 debug version of the code includes the debug output trace mechanism and
6104 much larger code and data size.
6107 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6108 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6110 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6111 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6113 2) iASL Compiler/Disassembler and Tools:
6115 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
6116 changes to existing tables. ACPICA BZ 775.
6118 ----------------------------------------
6119 25 June 2009. Summary of changes for version 20090625:
6121 The ACPI 4.0 Specification was released on June 16 and is available at
6122 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
6123 continue for the next few releases.
6125 1) ACPI CA Core Subsystem:
6127 ACPI 4.0: Implemented interpreter support for the IPMI operation region
6128 address space. Includes support for bi-directional data buffers and an
6130 address space handler (to be installed by an IPMI device driver.) ACPICA
6134 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
6136 support in both the header files and the disassembler.
6138 Completed a major update for the AcpiGetObjectInfo external interface.
6140 - Support for variable, unlimited length HID, UID, and CID strings.
6141 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
6143 - Call the _SxW power methods on behalf of a device object.
6144 - Determine if a device is a PCI root bridge.
6145 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
6146 These changes will require an update to all callers of this interface.
6148 the updated ACPICA Programmer Reference for details. One new source file
6150 been added - utilities/utids.c. ACPICA BZ 368, 780.
6152 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
6153 transfers. The Value parameter has been extended from 32 bits to 64 bits
6155 order to support new ACPI 4.0 tables. These changes will require an
6158 all callers of these interfaces. See the ACPICA Programmer Reference for
6159 details. ACPICA BZ 768.
6161 Fixed several problems with AcpiAttachData. The handler was not invoked
6163 the host node was deleted. The data sub-object was not automatically
6165 when the host node was deleted. The interface to the handler had an
6167 parameter, this was removed. ACPICA BZ 778.
6169 Enhanced the function that dumps ACPI table headers. All non-printable
6170 characters in the string fields are now replaced with '?' (Signature,
6172 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
6173 these fields are occasionally seen in the field. ACPICA BZ 788.
6175 Fixed a problem with predefined method repair code where the code that
6176 attempts to repair/convert an object of incorrect type is only executed
6178 the first time the predefined method is called. The mechanism that
6180 warnings on subsequent calls was interfering with the repair mechanism.
6183 Fixed a possible memory leak in the predefined validation/repair code
6186 buffer is automatically converted to an expected string object.
6188 Removed obsolete 16-bit files from the distribution and from the current
6190 tree head. ACPICA BZ 776.
6192 Example Code and Data Size: These are the sizes for the OS-independent
6193 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6194 debug version of the code includes the debug output trace mechanism and
6196 much larger code and data size.
6199 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6200 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6202 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6203 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6205 2) iASL Compiler/Disassembler and Tools:
6207 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
6208 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
6210 ACPI 4.0: iASL - implemented compile-time validation support for all new
6211 predefined names and control methods (31 total). ACPICA BZ 769.
6213 ----------------------------------------
6214 21 May 2009. Summary of changes for version 20090521:
6216 1) ACPI CA Core Subsystem:
6218 Disabled the preservation of the SCI enable bit in the PM1 control
6220 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
6223 a "preserved" bit - "OSPM always preserves this bit position", section
6224 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
6225 because the bit needs to be explicitly set by the OS as a workaround. No
6226 machines fail if the bit is not preserved. Therefore, ACPICA no longer
6227 attempts to preserve this bit.
6229 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
6230 incorrectly formed _PRT package could cause a fault. Added validation to
6231 ensure that each package element is actually a sub-package.
6233 Implemented a new interface to install or override a single control
6235 AcpiInstallMethod. This interface is useful when debugging in order to
6237 an existing method or to install a missing method without having to
6239 the entire ACPI table. See the ACPICA Programmer Reference for use and
6240 examples. Lin Ming, Bob Moore.
6242 Fixed several reference count issues with the DdbHandle object that is
6243 created from a Load or LoadTable operator. Prevent premature deletion of
6245 object. Also, mark the object as invalid once the table has been
6247 This is needed because the handle itself may not be deleted after the
6249 unload, depending on whether it has been stored in a named object by the
6252 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
6253 mutexes of the same sync level are acquired but then not released in
6255 opposite order, the internally maintained Current Sync Level becomes
6257 and can cause subsequent execution errors. ACPICA BZ 471.
6259 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
6260 specification has been changed to make the SyncLevel for mutex objects
6262 useful. When releasing a mutex, the SyncLevel of the mutex must now be
6264 same as the current sync level. This makes more sense than the previous
6266 (SyncLevel less than or equal). This change updates the code to match the
6269 Fixed a problem with the local version of the AcpiOsPurgeCache function.
6271 (local) cache must be locked during all cache object deletions. Andrew
6274 Updated the Load operator to use operation region interfaces. This
6276 direct memory mapping with region access calls. Now, all region accesses
6278 through the installed region handler as they should.
6280 Simplified and optimized the NsGetNextNode function. Reduced parameter
6282 and reduced code for this frequently used function.
6284 Example Code and Data Size: These are the sizes for the OS-independent
6285 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6286 debug version of the code includes the debug output trace mechanism and
6288 much larger code and data size.
6291 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6292 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6294 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6295 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6297 2) iASL Compiler/Disassembler and Tools:
6299 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
6301 with sub-table disassembly and handling invalid sub-tables. Attempt
6303 after an invalid sub-table ID.
6305 ----------------------------------------
6306 22 April 2009. Summary of changes for version 20090422:
6308 1) ACPI CA Core Subsystem:
6310 Fixed a compatibility issue with the recently released I/O port
6312 mechanism. For windows compatibility, 1) On a port protection violation,
6313 simply ignore the request and do not return an exception (allow the
6315 method to continue execution.) 2) If only part of the request overlaps a
6316 protected port, read/write the individual ports that are not protected.
6320 Enhanced the execution of the ASL/AML BreakPoint operator so that it
6322 breaks into the AML debugger if the debugger is present. This matches the
6323 ACPI-defined behavior.
6325 Fixed several possible warnings related to the use of the configurable
6326 ACPI_THREAD_ID. This type can now be configured as either an integer or a
6327 pointer with no warnings. Also fixes several warnings in printf-like
6328 statements for the 64-bit build when the type is configured as a pointer.
6331 Fixed a number of possible warnings when compiling with gcc 4+ (depending
6333 warning options.) Examples include printf formats, aliasing, unused
6335 missing prototypes, missing switch default statements, use of non-ANSI
6336 library functions, use of non-ANSI constructs. See generate/unix/Makefile
6338 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
6340 Example Code and Data Size: These are the sizes for the OS-independent
6341 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6342 debug version of the code includes the debug output trace mechanism and
6344 much larger code and data size.
6347 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6348 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6350 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6351 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6353 2) iASL Compiler/Disassembler and Tools:
6355 iASL: Fixed a generation warning from Bison 2.3 and fixed several
6360 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
6362 correctly digest Windows/DOS formatted files (with CR/LF).
6364 iASL: Added a new option for "quiet mode" (-va) that produces only the
6365 compilation summary, not individual errors and warnings. Useful for large
6368 AcpiExec: Implemented a new option (-z) to enable a forced
6370 timeout that can be used to detect hang conditions during execution of
6372 code (includes both internal semaphores and AML-defined mutexes and
6375 Added new makefiles for the generation of acpica in a generic unix-like
6376 environment. These makefiles are intended to generate the acpica tools
6378 utilities from the original acpica git source tree structure.
6380 Test Suites: Updated and cleaned up the documentation files. Updated the
6381 copyrights to 2009, affecting all source files. Use the new version of
6383 with quiet mode. Increased the number of available semaphores in the
6385 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
6387 an alternate implementation of the semaphore timeout to allow aslts to
6388 execute fully on Cygwin.
6390 ----------------------------------------
6391 20 March 2009. Summary of changes for version 20090320:
6393 1) ACPI CA Core Subsystem:
6395 Fixed a possible race condition between AcpiWalkNamespace and dynamic
6397 unloads. Added a reader/writer locking mechanism to allow multiple
6399 namespace walks (readers), but block a dynamic table unload until it can
6401 exclusive write access to the namespace. This fixes a problem where a
6403 unload could (possibly catastrophically) delete the portion of the
6405 that is currently being examined by a walk. Adds a new file, utlock.c,
6407 implements the reader/writer lock mechanism. ACPICA BZ 749.
6409 Fixed a regression introduced in version 20090220 where a change to the
6411 handling could cause the ACPICA subsystem to access non-existent I/O
6414 Modified the handling of FADT register and table (FACS/DSDT) addresses.
6416 FADT can contain both 32-bit and 64-bit versions of these addresses.
6417 Previously, the 64-bit versions were favored, meaning that if both 32 and
6419 versions were valid, but not equal, the 64-bit version was used. This was
6420 found to cause some machines to fail. Now, in this case, the 32-bit
6422 is used instead. This now matches the Windows behavior.
6424 Implemented a new mechanism to protect certain I/O ports. Provides
6426 compatibility and protects the standard PC I/O ports from access via AML
6427 code. Adds a new file, hwvalid.c
6429 Fixed a possible extraneous warning message from the FADT support. The
6430 message warns of a 32/64 length mismatch between the legacy and GAS
6431 definitions for a register.
6433 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
6435 made obsolete by the port protection mechanism above. It was previously
6437 to validate the entire address range of an operation region, which could
6439 incorrect if the range included illegal ports, but fields within the
6440 operation region did not actually access those ports. Validation is now
6441 performed on a per-field basis instead of the entire region.
6443 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
6444 Ignored bits must be "preserved" according to the ACPI spec. Usually,
6446 means a read/modify/write when writing to the register. However, for
6448 registers, writing a one means clear the event. Writing a zero means
6450 the event (do not clear.) This behavior is clarified in the ACPI 4.0
6452 and the ACPICA code now simply always writes a zero to the ignored bit.
6454 Modified the handling of ignored bits for the PM1 A/B Control Registers.
6456 per the ACPI specification, for the control registers, preserve
6457 (read/modify/write) all bits that are defined as either reserved or
6460 Updated the handling of write-only bits in the PM1 A/B Control Registers.
6461 When reading the register, zero the write-only bits as per the ACPI spec.
6462 ACPICA BZ 443. Lin Ming.
6464 Removed "Linux" from the list of supported _OSI strings. Linux no longer
6465 wants to reply true to this request. The Windows strings are the only
6467 through the AML that are tested and known to work properly.
6470 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6471 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6473 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6474 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6476 2) iASL Compiler/Disassembler and Tools:
6478 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
6482 ----------------------------------------
6483 20 February 2009. Summary of changes for version 20090220:
6485 1) ACPI CA Core Subsystem:
6487 Optimized the ACPI register locking. Removed locking for reads from the
6489 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
6491 not required when reading the single-bit registers. The
6492 AcpiGetRegisterUnlocked function is no longer needed and has been
6494 This will improve performance for reads on these registers. ACPICA BZ
6497 Fixed the parameter validation for AcpiRead/Write. Now return
6498 AE_BAD_PARAMETER if the input register pointer is null, and
6501 the register has an address of zero. Previously, these cases simply
6503 AE_OK. For optional registers such as PM1B status/enable/control, the
6505 should check for a valid register address before calling. ACPICA BZ 748.
6507 Renamed the external ACPI bit register access functions. Renamed
6508 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
6509 functions. The new names are AcpiReadBitRegister and
6510 AcpiWriteBitRegister.
6511 Also, restructured the code for these functions by simplifying the code
6513 and condensing duplicate code to reduce code size.
6515 Added new functions to transparently handle the possibly split PM1 A/B
6516 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
6518 now handle the split registers for PM1 Status, Enable, and Control.
6523 Added a function to handle the PM1 control registers,
6524 AcpiHwWritePm1Control.
6525 This function writes both of the PM1 control registers (A/B). These
6527 are different than the PM1 A/B status and enable registers in that
6529 values can be written to the A/B registers. Most notably, the SLP_TYP
6531 can be different, as per the values returned from the _Sx predefined
6534 Removed an extra register write within AcpiHwClearAcpiStatus. This
6536 was writing an optional PM1B status register twice. The existing call to
6538 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
6540 register. ACPICA BZ 751.
6542 Split out the PM1 Status registers from the FADT. Added new globals for
6544 registers (A/B), similar to the way the PM1 Enable registers are handled.
6545 Instead of overloading the FADT Event Register blocks. This makes the
6547 clearer and less prone to error.
6549 Fixed the warning message for when the platform contains too many ACPI
6551 for the default size of the global root table data structure. The
6553 for the truncation value was incorrect.
6555 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
6556 obsolete macro, since it is now a simple reference to ->common.type.
6558 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
6560 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
6561 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
6562 simply SLEEP_TYPE. ACPICA BZ 754.
6564 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
6565 function is only needed on 64-bit host operating systems and is thus not
6566 included for 32-bit hosts.
6568 Debug output: print the input and result for invocations of the _OSI
6570 control method via the ACPI_LV_INFO debug level. Also, reduced some of
6572 verbosity of this debug level. Len Brown.
6574 Example Code and Data Size: These are the sizes for the OS-independent
6575 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6576 debug version of the code includes the debug output trace mechanism and
6578 much larger code and data size.
6581 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6582 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6584 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6585 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6587 2) iASL Compiler/Disassembler and Tools:
6589 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
6590 various legal performance profiles.
6592 ----------------------------------------
6593 23 January 2009. Summary of changes for version 20090123:
6595 1) ACPI CA Core Subsystem:
6597 Added the 2009 copyright to all module headers and signons. This affects
6598 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6599 the tools/utilities.
6601 Implemented a change to allow the host to override any ACPI table,
6603 dynamically loaded tables. Previously, only the DSDT could be replaced by
6605 host. With this change, the AcpiOsTableOverride interface is called for
6607 table found in the RSDT/XSDT during ACPICA initialization, and also
6609 a table is dynamically loaded via the AML Load operator.
6611 Updated FADT flag definitions, especially the Boot Architecture flags.
6613 Debugger: For the Find command, automatically pad the input ACPI name
6615 underscores if the name is shorter than 4 characters. This enables a
6617 with the actual namespace entry which is itself padded with underscores.
6619 Example Code and Data Size: These are the sizes for the OS-independent
6620 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6621 debug version of the code includes the debug output trace mechanism and
6623 much larger code and data size.
6626 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6627 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6629 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6630 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6632 2) iASL Compiler/Disassembler and Tools:
6634 Fix build error under Bison-2.4.
6636 Dissasembler: Enhanced FADT support. Added decoding of the Boot
6638 flags. Now decode all flags, regardless of the FADT version. Flag output
6639 includes the FADT version which first defined each flag.
6641 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
6643 DSDT). Windows only.
6645 ----------------------------------------
6646 04 December 2008. Summary of changes for version 20081204:
6648 1) ACPI CA Core Subsystem:
6650 The ACPICA Programmer Reference has been completely updated and revamped
6652 this release. This includes updates to the external interfaces, OSL
6653 interfaces, the overview sections, and the debugger reference.
6655 Several new ACPICA interfaces have been implemented and documented in the
6656 programmer reference:
6657 AcpiReset - Writes the reset value to the FADT-defined reset register.
6658 AcpiDisableAllGpes - Disable all available GPEs.
6659 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
6660 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
6661 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
6662 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
6663 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
6665 Most of the public ACPI hardware-related interfaces have been moved to a
6667 file, components/hardware/hwxface.c
6669 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
6670 register lengths within the FADT are now used, and the low level ACPI
6671 register access no longer hardcodes the ACPI register lengths. Given that
6672 there may be some risk in actually trusting the FADT register lengths, a
6674 time option was added to fall back to the default hardcoded lengths if
6676 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
6677 option is set to true for now, and a warning is issued if a suspicious
6679 register length is overridden with the default value.
6681 Fixed a reference count issue in NsRepairObject. This problem was
6683 in version 20081031 as part of a fix to repair Buffer objects within
6686 Added semaphore support to the Linux/Unix application OS-services layer
6687 (OSL). ACPICA BZ 448. Lin Ming.
6689 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
6691 be implemented in the OSL, or will binary semaphores be used instead.
6693 Example Code and Data Size: These are the sizes for the OS-independent
6694 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6695 debug version of the code includes the debug output trace mechanism and
6697 much larger code and data size.
6700 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6701 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6703 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6704 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6706 2) iASL Compiler/Disassembler and Tools:
6708 iASL: Completed the '-e' option to include additional ACPI tables in
6711 aid with disassembly and External statement generation. ACPICA BZ 742.
6715 iASL: Removed the "named object in while loop" error. The compiler cannot
6716 determine how many times a loop will execute. ACPICA BZ 730.
6718 Disassembler: Implemented support for FADT revision 2 (MS extension).
6722 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
6725 ----------------------------------------
6726 31 October 2008. Summary of changes for version 20081031:
6728 1) ACPI CA Core Subsystem:
6730 Restructured the ACPICA header files into public/private. acpi.h now
6732 only the "public" acpica headers. All other acpica headers are "private"
6734 should not be included by acpica users. One new file, accommon.h is used
6736 include the commonly used private headers for acpica code generation.
6738 plans include moving all private headers to a new subdirectory.
6740 Implemented an automatic Buffer->String return value conversion for
6741 predefined ACPI methods. For these methods (such as _BIF), added
6743 conversion for return objects that are required to be a String, but a
6745 was found instead. This can happen when reading string battery data from
6747 operation region, because it used to be difficult to convert the data
6749 buffer to string from within the ASL. Ensures that the host OS is
6751 with a valid null-terminated string. Linux BZ 11822.
6753 Updated the FACS waking vector interfaces. Split
6754 AcpiSetFirmwareWakingVector
6755 into two: one for the 32-bit vector, another for the 64-bit vector. This
6757 required because the host OS must setup the wake much differently for
6759 vector (real vs. protected mode, etc.) and the interface itself should
6762 deciding which vector to use. Also, eliminated the
6763 GetFirmwareWakingVector
6764 interface, as it served no purpose (only the firmware reads the vector,
6766 only writes the vector.) ACPICA BZ 731.
6768 Implemented a mechanism to escape infinite AML While() loops. Added a
6770 counter to force exit from AML While loops if the count becomes too
6772 This can occur in poorly written AML when the hardware does not respond
6773 within a while loop and the loop does not implement a timeout. The
6775 loop count is configurable. A new exception code is returned when a loop
6777 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
6779 Optimized the execution of AML While loops. Previously, a control state
6780 object was allocated and freed for each execution of the loop. The
6781 optimization is to simply reuse the control state for each iteration.
6783 speeds up the raw loop execution time by about 5%.
6785 Enhanced the implicit return mechanism. For Windows compatibility, return
6787 implicit integer of value zero for methods that contain no executable
6789 Such methods are seen in the field as stubs (presumably), and can cause
6790 drivers to fail if they expect a return value. Lin Ming.
6792 Allow multiple backslashes as root prefixes in namepaths. In a fully
6793 qualified namepath, allow multiple backslash prefixes. This can happen
6795 is seen in the field) because of the use of a double-backslash in strings
6796 (since backslash is the escape character) causing confusion. ACPICA BZ
6800 Emit a warning if two different FACS or DSDT tables are discovered in the
6801 FADT. Checks if there are two valid but different addresses for the FACS
6803 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
6805 Consolidated the method argument count validation code. Merged the code
6807 validates control method argument counts into the predefined validation
6808 module. Eliminates possible multiple warnings for incorrect argument
6811 Implemented ACPICA example code. Includes code for ACPICA initialization,
6812 handler installation, and calling a control method. Available at
6813 source/tools/examples.
6815 Added a global pointer for FACS table to simplify internal FACS access.
6817 the global pointer instead of using AcpiGetTableByIndex for each FACS
6819 This simplifies the code for the Global Lock and the Firmware Waking
6822 Example Code and Data Size: These are the sizes for the OS-independent
6823 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6824 debug version of the code includes the debug output trace mechanism and
6826 much larger code and data size.
6829 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6830 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6832 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6833 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6835 2) iASL Compiler/Disassembler and Tools:
6837 iASL: Improved disassembly of external method calls. Added the -e option
6839 allow the inclusion of additional ACPI tables to help with the
6842 method invocations and the generation of external declarations during the
6843 disassembly. Certain external method invocations cannot be disassembled
6844 properly without the actual declaration of the method. Use the -e option
6846 include the table where the external method(s) are actually declared.
6848 useful for disassembling SSDTs that make method calls back to the master
6849 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
6851 -e dsdt.aml ssdt1.aml
6853 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
6854 problem where the use of an alias within a namepath would result in a not
6855 found error or cause the compiler to fault. Also now allows forward
6856 references from the Alias operator itself. ACPICA BZ 738.
6858 ----------------------------------------
6859 26 September 2008. Summary of changes for version 20080926:
6861 1) ACPI CA Core Subsystem:
6863 Designed and implemented a mechanism to validate predefined ACPI methods
6865 objects. This code validates the predefined ACPI objects (objects whose
6867 start with underscore) that appear in the namespace, at the time they are
6868 evaluated. The argument count and the type of the returned object are
6869 validated against the ACPI specification. The purpose of this validation
6871 to detect problems with the BIOS-implemented predefined ACPI objects
6873 the results are returned to the ACPI-related drivers. Future enhancements
6875 include actual repair of incorrect return objects where possible. Two new
6876 files are nspredef.c and acpredef.h.
6878 Fixed a fault in the AML parser if a memory allocation fails during the
6880 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
6882 Fixed an issue with implicit return compatibility. This change improves
6884 implicit return mechanism to be more compatible with the MS interpreter.
6886 Ming, ACPICA BZ 349.
6888 Implemented support for zero-length buffer-to-string conversions. Allow
6890 length strings during interpreter buffer-to-string conversions. For
6892 during the ToDecimalString and ToHexString operators, as well as implicit
6893 conversions. Fiodor Suietov, ACPICA BZ 585.
6895 Fixed two possible memory leaks in the error exit paths of
6896 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
6898 similar in that they use a stack of state objects in order to eliminate
6899 recursion. The stack must be fully unwound and deallocated if an error
6900 occurs. Lin Ming. ACPICA BZ 383.
6902 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
6904 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
6905 Moore ACPICA BZ 442.
6907 Removed the obsolete version number in module headers. Removed the
6908 "$Revision" number that appeared in each module header. This version
6910 was useful under SourceSafe and CVS, but has no meaning under git. It is
6912 only incorrect, it could also be misleading.
6914 Example Code and Data Size: These are the sizes for the OS-independent
6915 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6916 debug version of the code includes the debug output trace mechanism and
6918 much larger code and data size.
6921 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6922 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6924 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6925 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6927 ----------------------------------------
6928 29 August 2008. Summary of changes for version 20080829:
6930 1) ACPI CA Core Subsystem:
6932 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
6933 Reference. Changes include the elimination of cheating on the Object
6935 for the DdbHandle subtype, addition of a reference class field to
6936 differentiate the various reference types (instead of an AML opcode), and
6938 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
6940 Reduce an error to a warning for an incorrect method argument count.
6941 Previously aborted with an error if too few arguments were passed to a
6942 control method via the external ACPICA interface. Now issue a warning
6944 and continue. Handles the case where the method inadvertently declares
6946 many arguments, but does not actually use the extra ones. Applies mainly
6948 the predefined methods. Lin Ming. Linux BZ 11032.
6950 Disallow the evaluation of named object types with no intrinsic value.
6952 AE_TYPE for objects that have no value and therefore evaluation is
6954 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
6956 these types were allowed, but an exception would be generated at some
6958 during the evaluation. Now, the error is generated up front.
6960 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
6961 (nsnames.c). Fixes a leak in the error exit path.
6963 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
6965 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
6967 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
6970 Removed obsolete and/or unused exception codes from the acexcep.h header.
6971 There is the possibility that certain device drivers may be affected if
6973 use any of these exceptions.
6975 The ACPICA documentation has been added to the public git source tree,
6977 acpica/documents. Included are the ACPICA programmer reference, the iASL
6978 compiler reference, and the changes.txt release logfile.
6980 Example Code and Data Size: These are the sizes for the OS-independent
6981 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6982 debug version of the code includes the debug output trace mechanism and
6984 much larger code and data size.
6987 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6988 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6990 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6991 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6993 2) iASL Compiler/Disassembler and Tools:
6995 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
6996 defines _SCP with 3 arguments. Previous versions defined it with only 1
6997 argument. iASL now allows both definitions.
6999 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
7001 length subtables when disassembling ACPI tables. Also fixed a couple of
7002 errors where a full 16-bit table type field was not extracted from the
7006 acpisrc: Improve comment counting mechanism for generating source code
7007 statistics. Count first and last lines of multi-line comments as
7009 not comment lines. Handle Linux legal header in addition to standard
7013 ----------------------------------------
7015 29 July 2008. Summary of changes for version 20080729:
7017 1) ACPI CA Core Subsystem:
7019 Fix a possible deadlock in the GPE dispatch. Remove call to
7020 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
7022 to acquire the GPE lock but can deadlock since the GPE lock is already
7024 at dispatch time. This code was introduced in version 20060831 as a
7026 to Linux BZ 6881 and has since been removed from Linux.
7028 Add a function to dereference returned reference objects. Examines the
7030 object from a call to AcpiEvaluateObject. Any Index or RefOf references
7032 automatically dereferenced in an attempt to return something useful
7034 reference types cannot be converted into an external ACPI_OBJECT.)
7036 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
7038 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
7039 subtables for the MADT and one new subtable for the SRAT. Includes
7040 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
7042 Specification, June 2008.
7044 Additional error checking for pathname utilities. Add error check after
7046 calls to AcpiNsGetPathnameLength. Add status return from
7047 AcpiNsBuildExternalPath and check after all calls. Add parameter
7049 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
7051 Return status from the global init function AcpiUtGlobalInitialize. This
7053 used by both the kernel subsystem and the utilities such as iASL
7055 The function could possibly fail when the caches are initialized. Yang
7058 Add a function to decode reference object types to strings. Created for
7059 improved error messages.
7061 Improve object conversion error messages. Better error messages during
7063 conversion from internal to the external ACPI_OBJECT. Used for external
7065 to AcpiEvaluateObject.
7067 Example Code and Data Size: These are the sizes for the OS-independent
7068 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7069 debug version of the code includes the debug output trace mechanism and
7071 much larger code and data size.
7074 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7075 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7077 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7078 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7080 2) iASL Compiler/Disassembler and Tools:
7082 Debugger: fix a possible hang when evaluating non-methods. Fixes a
7084 introduced in version 20080701. If the object being evaluated (via
7086 command) is not a method, the debugger can hang while trying to obtain
7088 existent parameters.
7090 iASL: relax error for using reserved "_T_x" identifiers. These names can
7091 appear in a disassembled ASL file if they were emitted by the original
7092 compiler. Instead of issuing an error or warning and forcing the user to
7093 manually change these names, issue a remark instead.
7095 iASL: error if named object created in while loop. Emit an error if any
7097 object is created within a While loop. If allowed, this code will
7100 run-time error on the second iteration of the loop when an attempt is
7103 create the same named object twice. ACPICA bugzilla 730.
7105 iASL: Support absolute pathnames for include files. Add support for
7107 pathnames within the Include operator. previously, only relative
7111 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
7113 The ACPI spec requires one interrupt minimum. BZ 423
7115 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
7116 Handles the case for the Interrupt Resource Descriptor where
7117 the ResourceSource argument is omitted but ResourceSourceIndex
7118 is present. Now leave room for the Index. BZ 426
7120 iASL: Prevent error message if CondRefOf target does not exist. Fixes
7122 where an error message is emitted if the target does not exist. BZ 516
7124 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
7125 (get ACPI tables on Windows). This was apparently broken in version
7128 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
7130 the EOF happens immediately after the last table in the input file. Print
7131 completion message. Previously, no message was displayed in this case.
7133 ----------------------------------------
7134 01 July 2008. Summary of changes for version 20080701:
7136 0) Git source tree / acpica.org
7138 Fixed a problem where a git-clone from http would not transfer the entire
7141 1) ACPI CA Core Subsystem:
7143 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
7144 enable bit. Now performs a read-change-write of the enable register
7146 of simply writing out the cached enable mask. This will prevent
7148 enabling of GPEs if a rogue GPE is received during initialization (before
7150 handlers are installed.)
7152 Implemented a copy for dynamically loaded tables. Previously, dynamically
7153 loaded tables were simply mapped - but on some machines this memory is
7154 corrupted after suspend. Now copy the table to a local buffer. For the
7155 OpRegion case, added checksum verify. Use the table length from the table
7156 header, not the region length. For the Buffer case, use the table length
7157 also. Dennis Noordsij, Bob Moore. BZ 10734
7159 Fixed a problem where the same ACPI table could not be dynamically loaded
7161 unloaded more than once. Without this change, a table cannot be loaded
7163 once it has been loaded/unloaded one time. The current mechanism does not
7164 unregister a table upon an unload. During a load, if the same table is
7166 this no longer returns an exception. BZ 722
7168 Fixed a problem where the wrong descriptor length was calculated for the
7169 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
7171 are calculated as 12 bytes long, but the actual length in the internal
7172 descriptor is 16 because of the round-up to 8 on the 64-bit build.
7174 by Linn Crosetto. BZ 728
7176 Fixed a possible memory leak in the Unload operator. The DdbHandle
7178 by Load() did not have its reference count decremented during unload,
7180 to a memory leak. Lin Ming. BZ 727
7182 Fixed a possible memory leak when deleting thermal/processor objects. Any
7183 associated notify handlers (and objects) were not being deleted. Fiodor
7186 Fixed the ordering of the ASCII names in the global mutex table to match
7188 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
7190 Vegard Nossum. BZ 726
7192 Enhanced the AcpiGetObjectInfo interface to return the number of required
7193 arguments if the object is a control method. Added this call to the
7195 so the proper number of default arguments are passed to a method. This
7196 prevents a warning when executing methods from AcpiExec.
7198 Added a check for an invalid handle in AcpiGetObjectInfo. Return
7199 AE_BAD_PARAMETER if input handle is invalid. BZ 474
7201 Fixed an extraneous warning from exconfig.c on the 64-bit build.
7203 Example Code and Data Size: These are the sizes for the OS-independent
7204 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7205 debug version of the code includes the debug output trace mechanism and
7207 much larger code and data size.
7210 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7211 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7213 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7214 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7216 2) iASL Compiler/Disassembler and Tools:
7218 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
7219 resource descriptor names.
7221 iASL: Detect invalid ASCII characters in input (windows version). Removed
7223 "-CF" flag from the flex compile, enables correct detection of non-ASCII
7224 characters in the input. BZ 441
7226 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
7228 "result of operation not used" warning when the DDB handle returned from
7229 LoadTable is not used. The warning is not needed. BZ 590
7231 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
7234 pass address of table to the AML. Added option to disable OpRegion
7236 to allow creation of an OpRegion with a real address that was passed to
7238 All of this allows testing of the Load and Unload operators from
7241 Debugger: update tables command for unloaded tables. Handle unloaded
7243 and use the standard table header output routine.
7245 ----------------------------------------
7246 09 June 2008. Summary of changes for version 20080609:
7248 1) ACPI CA Core Subsystem:
7250 Implemented a workaround for reversed _PRT entries. A significant number
7252 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
7253 change dynamically detects and repairs this problem. Provides
7255 with MS ACPI. BZ 6859
7257 Simplified the internal ACPI hardware interfaces to eliminate the locking
7258 flag parameter from Register Read/Write. Added a new external interface,
7259 AcpiGetRegisterUnlocked.
7261 Fixed a problem where the invocation of a GPE control method could hang.
7263 was a regression introduced in 20080514. The new method argument count
7264 validation mechanism can enter an infinite loop when a GPE method is
7265 dispatched. Problem fixed by removing the obsolete code that passed GPE
7267 information to the notify handler via the control method parameter
7270 Fixed a problem where the _SST execution status was incorrectly returned
7272 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
7274 20080514. _SST is optional and a NOT_FOUND exception should never be
7277 Fixed a problem where a deleted object could be accessed from within the
7279 parser. This was a regression introduced in version 20080123 as a fix for
7281 Unload operator. Lin Ming. BZ 10669
7283 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
7285 and eliminated the use of a negative index in a loop. Operands are now
7286 displayed in the correct order, not backwards. This also fixes a
7288 introduced in 20080514 on 64-bit systems where the elimination of
7289 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
7292 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
7294 path did not delete a locally allocated structure.
7296 Updated definitions for the DMAR and SRAT tables to synchronize with the
7297 current specifications. Includes disassembler support.
7299 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
7300 loop termination value was used. Loop terminated on iteration early,
7302 one mutex. Linn Crosetto
7304 Example Code and Data Size: These are the sizes for the OS-independent
7305 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7306 debug version of the code includes the debug output trace mechanism and
7308 much larger code and data size.
7311 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7312 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7314 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7315 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7317 2) iASL Compiler/Disassembler and Tools:
7319 Disassembler: Implemented support for EisaId() within _CID objects. Now
7320 disassemble integer _CID objects back to EisaId invocations, including
7321 multiple integers within _CID packages. Includes single-step support for
7324 Disassembler: Added support for DMAR and SRAT table definition changes.
7326 ----------------------------------------
7327 14 May 2008. Summary of changes for version 20080514:
7329 1) ACPI CA Core Subsystem:
7331 Fixed a problem where GPEs were enabled too early during the ACPICA
7332 initialization. This could lead to "handler not installed" errors on some
7333 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
7335 ensures that all operation regions and devices throughout the namespace
7337 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
7339 Implemented a change to the enter sleep code. Moved execution of the _GTS
7340 method to just before setting sleep enable bit. The execution was moved
7342 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
7343 immediately before the SLP_EN bit is set, as per the ACPI specification.
7346 Implemented a fix to disable unknown GPEs (2nd version). Now always
7348 the GPE, even if ACPICA thinks that that it is already disabled. It is
7349 possible that the AML or some other code has enabled the GPE unbeknownst
7353 Fixed a problem with the Field operator where zero-length fields would
7355 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
7357 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
7359 Implemented a fix for the Load operator, now load the table at the
7361 root. This reverts a change introduced in version 20071019. The table is
7363 loaded at the namespace root even though this goes against the ACPI
7364 specification. This provides compatibility with other ACPI
7366 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
7369 Fixed a problem where ACPICA would not Load() tables with unusual
7371 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
7372 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
7373 Therefore, signature validation is worthless. Apparently MS ACPI accepts
7375 signatures, ACPICA must be compatible. BZ 10454.
7377 Fixed a possible negative array index in AcpiUtValidateException. Added
7379 fields to the exception string arrays to eliminate a -1 subtraction on
7383 Updated the debug tracking macros to reduce overall code and data size.
7384 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
7385 instead of pointers to static strings. Jan Beulich and Bob Moore.
7387 Implemented argument count checking in control method invocation via
7388 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
7390 many. This applies only to extern programmatic control method execution,
7392 method-to-method calls within the AML. Lin Ming.
7394 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
7396 longer needed, especially with the removal of 16-bit support. It was
7398 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
7401 32/64-bit platforms is required.
7403 Added the C const qualifier for appropriate string constants -- mostly
7404 MODULE_NAME and printf format strings. Jan Beulich.
7406 Example Code and Data Size: These are the sizes for the OS-independent
7407 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7408 debug version of the code includes the debug output trace mechanism and
7410 much larger code and data size.
7413 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7414 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7416 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7417 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7419 2) iASL Compiler/Disassembler and Tools:
7421 Implemented ACPI table revision ID validation in the disassembler. Zero
7423 always invalid. For DSDTs, the ID controls the interpreter integer width.
7425 means 32-bit and this is unusual. 2 or greater is 64-bit.
7427 ----------------------------------------
7428 21 March 2008. Summary of changes for version 20080321:
7430 1) ACPI CA Core Subsystem:
7432 Implemented an additional change to the GPE support in order to suppress
7433 spurious or stray GPEs. The AcpiEvDisableGpe function will now
7435 disable incoming GPEs that are neither enabled nor disabled -- meaning
7437 the GPE is unknown to the system. This should prevent future interrupt
7439 from that GPE. BZ 6217 (Zhang Rui)
7441 Fixed a problem where NULL package elements were not returned to the
7442 AcpiEvaluateObject interface correctly. The element was simply ignored
7443 instead of returning a NULL ACPI_OBJECT package element, potentially
7445 a buffer overflow and/or confusing the caller who expected a fixed number
7447 elements. BZ 10132 (Lin Ming, Bob Moore)
7449 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
7451 Qword), Field, BankField, and IndexField operators when invoked from
7453 an executing control method. In this case, these operators created
7455 nodes that were incorrectly left marked as permanent nodes instead of
7456 temporary nodes. This could cause a problem if there is race condition
7457 between an exiting control method and a running namespace walk. (Reported
7461 Fixed a problem where the CreateField and CreateXXXField operators would
7462 incorrectly allow duplicate names (the name of the field) with no
7466 Implemented several changes for Notify handling. Added support for new
7468 values (ACPI 2.0+) and improved the Notify debug output. Notify on
7469 PowerResource objects is no longer allowed, as per the ACPI
7471 (Bob Moore, Zhang Rui)
7473 All Reference Objects returned via the AcpiEvaluateObject interface are
7475 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
7477 NULL objects - either NULL package elements or unresolved named
7480 Fixed a problem where an extraneous debug message was produced for
7482 objects (when debugging enabled). The message "Package List length larger
7483 than NumElements count" is now produced in the correct case, and is now
7485 error message rather than a debug message. Added a debug message for the
7486 opposite case, where NumElements is larger than the Package List (the
7488 will be padded out with NULL elements as per the ACPI spec.)
7490 Implemented several improvements for the output of the ASL "Debug" object
7492 clarify and keep all data for a given object on one output line.
7494 Fixed two size calculation issues with the variable-length Start
7496 resource descriptor.
7498 Example Code and Data Size: These are the sizes for the OS-independent
7499 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7500 debug version of the code includes the debug output trace mechanism and
7502 a much larger code and data size.
7505 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7506 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7508 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7509 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7511 2) iASL Compiler/Disassembler and Tools:
7513 Fixed a problem with the use of the Switch operator where execution of
7515 containing method by multiple concurrent threads could cause an
7516 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
7517 actual Switch opcode, it must be simulated with local named temporary
7518 variables and if/else pairs. The solution chosen was to mark any method
7520 uses Switch as Serialized, thus preventing multiple thread entries. BZ
7523 ----------------------------------------
7524 13 February 2008. Summary of changes for version 20080213:
7526 1) ACPI CA Core Subsystem:
7528 Implemented another MS compatibility design change for GPE/Notify
7530 GPEs are now cleared/enabled asynchronously to allow all pending notifies
7532 complete first. It is expected that the OSL will queue the enable request
7533 behind all pending notify requests (may require changes to the local host
7535 in AcpiOsExecute). Alexey Starikovskiy.
7537 Fixed a problem where buffer and package objects passed as arguments to a
7538 control method via the external AcpiEvaluateObject interface could cause
7540 AE_AML_INTERNAL exception depending on the order and type of operators
7541 executed by the target control method.
7543 Fixed a problem where resource descriptor size optimization could cause a
7544 problem when a _CRS resource template is passed to a _SRS method. The
7546 resource template must use the same descriptors (with the same size) as
7547 returned from _CRS. This change affects the following resource
7549 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
7552 Fixed a problem where a CopyObject to RegionField, BankField, and
7554 objects did not perform an implicit conversion as it should. These types
7556 retain their initial type permanently as per the ACPI specification.
7558 a CopyObject to all other object types should not perform an implicit
7559 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
7561 Fixed a problem with the AcpiGetDevices interface where the mechanism to
7562 match device CIDs did not examine the entire list of available CIDs, but
7563 instead aborted on the first non-matching CID. Andrew Patterson.
7565 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
7567 inadvertently changed to return a 16-bit value instead of a 32-bit value,
7568 truncating the upper dword of a 64-bit value. This macro is only used to
7569 display debug output, so no incorrect calculations were made. Also,
7570 reimplemented the macro so that a 64-bit shift is not performed by
7571 inefficient compilers.
7573 Added missing va_end statements that should correspond with each va_start
7576 Example Code and Data Size: These are the sizes for the OS-independent
7577 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7578 debug version of the code includes the debug output trace mechanism and
7580 a much larger code and data size.
7583 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7584 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7586 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7587 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7589 2) iASL Compiler/Disassembler and Tools:
7591 Implemented full disassembler support for the following new ACPI tables:
7592 BERT, EINJ, and ERST. Implemented partial disassembler support for the
7593 complicated HEST table. These tables support the Windows Hardware Error
7594 Architecture (WHEA).
7596 ----------------------------------------
7597 23 January 2008. Summary of changes for version 20080123:
7599 1) ACPI CA Core Subsystem:
7601 Added the 2008 copyright to all module headers and signons. This affects
7602 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7603 the tools/utilities.
7605 Fixed a problem with the SizeOf operator when used with Package and
7607 objects. These objects have deferred execution for some arguments, and
7609 execution is now completed before the SizeOf is executed. This problem
7611 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
7615 Implemented an enhancement to the interpreter "slack mode". In the
7618 an explicit return or an implicitly returned object from the last
7620 opcode, a control method will now implicitly return an integer of value 0
7622 Microsoft compatibility. (Lin Ming) BZ 392
7624 Fixed a problem with the Load operator where an exception was not
7627 the case where the table is already loaded. (Lin Ming) BZ 463
7629 Implemented support for the use of DDBHandles as an Indexed Reference, as
7631 the ACPI spec. (Lin Ming) BZ 486
7633 Implemented support for UserTerm (Method invocation) for the Unload
7635 as per the ACPI spec. (Lin Ming) BZ 580
7637 Fixed a problem with the LoadTable operator where the OemId and
7639 input strings could cause unexpected failures if they were shorter than
7641 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
7643 Implemented support for UserTerm (Method invocation) for the Unload
7645 as per the ACPI spec. (Lin Ming) BZ 580
7647 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
7649 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
7651 Example Code and Data Size: These are the sizes for the OS-independent
7652 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7653 debug version of the code includes the debug output trace mechanism and
7655 a much larger code and data size.
7658 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7659 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7661 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7662 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7664 2) iASL Compiler/Disassembler and Tools:
7666 Implemented support in the disassembler for checksum validation on
7668 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
7670 header dump at the start of the disassembly.
7672 Implemented additional debugging information in the namespace listing
7674 created during compilation. In addition to the namespace hierarchy, the
7676 pathname to each namespace object is displayed.
7678 Fixed a problem with the disassembler where invalid ACPI tables could
7680 faults or infinite loops.
7682 Fixed an unexpected parse error when using the optional "parameter types"
7683 list in a control method declaration. (Lin Ming) BZ 397
7685 Fixed a problem where two External declarations with the same name did
7687 cause an error (Lin Ming) BZ 509
7689 Implemented support for full TermArgs (adding Argx, Localx and method
7690 invocation) for the ParameterData parameter to the LoadTable operator.
7694 ----------------------------------------
7695 19 December 2007. Summary of changes for version 20071219:
7697 1) ACPI CA Core Subsystem:
7699 Implemented full support for deferred execution for the TermArg string
7700 arguments for DataTableRegion. This enables forward references and full
7701 operand resolution for the three string arguments. Similar to
7703 deferred argument execution.) Lin Ming. BZ 430
7705 Implemented full argument resolution support for the BankValue argument
7707 BankField. Previously, only constants were supported, now any TermArg may
7709 used. Lin Ming BZ 387, 393
7711 Fixed a problem with AcpiGetDevices where the search of a branch of the
7712 device tree could be terminated prematurely. In accordance with the ACPI
7713 specification, the search down the current branch is terminated if a
7715 is both not present and not functional (instead of just not present.)
7719 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
7721 the underlying AML code changed the GPE enable registers. Now, any
7723 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
7725 instead of simply ignored. Rui Zhang.
7727 Fixed a problem with Index Fields where the Index register was
7729 limited to a maximum of 32 bits. Now any size may be used.
7731 Fixed a couple memory leaks associated with "implicit return" objects
7733 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
7735 Example Code and Data Size: These are the sizes for the OS-independent
7736 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7737 debug version of the code includes the debug output trace mechanism and
7739 a much larger code and data size.
7742 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7743 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7745 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7746 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7748 ----------------------------------------
7749 14 November 2007. Summary of changes for version 20071114:
7751 1) ACPI CA Core Subsystem:
7753 Implemented event counters for each of the Fixed Events, the ACPI SCI
7754 (interrupt) itself, and control methods executed. Named
7755 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
7757 should be useful for debugging and statistics.
7759 Implemented a new external interface, AcpiGetStatistics, to retrieve the
7760 contents of the various event counters. Returns the current values for
7761 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
7762 AcpiMethodCount. The interface can be expanded in the future if new
7764 are added. Device drivers should use this interface rather than access
7768 Fixed a problem with the FromBCD and ToBCD operators. With some
7770 the ShortDivide function worked incorrectly, causing problems with the
7772 functions with large input values. A truncation from 64-bit to 32-bit
7773 inadvertently occurred. Internal BZ 435. Lin Ming
7775 Fixed a problem with Index references passed as method arguments.
7777 passed as arguments to control methods were dereferenced immediately
7779 control was passed to the called method). The references are now
7781 passed directly to the called method. BZ 5389. Lin Ming
7783 Fixed a problem with CopyObject used in conjunction with the Index
7785 The reference was incorrectly dereferenced before the copy. The reference
7787 now correctly copied. BZ 5391. Lin Ming
7789 Fixed a problem with Control Method references within Package objects.
7791 references are now correctly generated. This completes the package
7792 construction overhaul that began in version 20071019.
7794 Example Code and Data Size: These are the sizes for the OS-independent
7795 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7796 debug version of the code includes the debug output trace mechanism and
7798 a much larger code and data size.
7801 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7802 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7804 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7805 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7808 2) iASL Compiler/Disassembler and Tools:
7810 The AcpiExec utility now installs handlers for all of the predefined
7811 Operation Region types. New types supported are: PCI_Config, CMOS, and
7814 Fixed a problem with the 64-bit version of AcpiExec where the extended
7816 bit) address fields for the DSDT and FACS within the FADT were not being
7817 used, causing truncation of the upper 32-bits of these addresses. Lin
7821 ----------------------------------------
7822 19 October 2007. Summary of changes for version 20071019:
7824 1) ACPI CA Core Subsystem:
7826 Fixed a problem with the Alias operator when the target of the alias is a
7827 named ASL operator that opens a new scope -- Scope, Device,
7829 Processor, and ThermalZone. In these cases, any children of the original
7830 operator could not be accessed via the alias, potentially causing
7832 AE_NOT_FOUND exceptions. (BZ 9067)
7834 Fixed a problem with the Package operator where all named references were
7835 created as object references and left otherwise unresolved. According to
7837 ACPI specification, a Package can only contain Data Objects or references
7839 control methods. The implication is that named references to Data Objects
7840 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
7841 immediately upon package creation. This is the approach taken with this
7842 change. References to all other named objects (Methods, Devices, Scopes,
7843 etc.) are all now properly created as reference objects. (BZ 5328)
7845 Reverted a change to Notify handling that was introduced in version
7846 20070508. This version changed the Notify handling from asynchronous to
7847 fully synchronous (Device driver Notify handling with respect to the
7849 ASL operator). It was found that this change caused more problems than it
7850 solved and was removed by most users.
7852 Fixed a problem with the Increment and Decrement operators where the type
7854 the target object could be unexpectedly and incorrectly changed. (BZ 353)
7857 Fixed a problem with the Load and LoadTable operators where the table
7858 location within the namespace was ignored. Instead, the table was always
7859 loaded into the root or current scope. Lin Ming.
7861 Fixed a problem with the Load operator when loading a table from a buffer
7862 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
7864 Fixed a problem with the Debug object where a store of a DdbHandle
7866 object to the Debug object could cause a fault.
7868 Added a table checksum verification for the Load operator, in the case
7870 the load is from a buffer. (BZ 578).
7872 Implemented additional parameter validation for the LoadTable operator.
7874 length of the input strings SignatureString, OemIdString, and OemTableId
7876 now checked for maximum lengths. (BZ 582) Lin Ming.
7878 Example Code and Data Size: These are the sizes for the OS-independent
7879 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7880 debug version of the code includes the debug output trace mechanism and
7882 a much larger code and data size.
7885 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7886 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7888 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7889 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7892 2) iASL Compiler/Disassembler:
7894 Fixed a problem where if a single file was specified and the file did not
7895 exist, no error message was emitted. (Introduced with wildcard support in
7898 ----------------------------------------
7899 19 September 2007. Summary of changes for version 20070919:
7901 1) ACPI CA Core Subsystem:
7903 Designed and implemented new external interfaces to install and remove
7904 handlers for ACPI table-related events. Current events that are defined
7906 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
7907 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
7908 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
7910 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
7911 (acpi_serialized option on Linux) could cause some systems to hang during
7912 initialization. (Bob Moore) BZ 8171
7914 Fixed a problem where objects of certain types (Device, ThermalZone,
7915 Processor, PowerResource) can be not found if they are declared and
7916 referenced from within the same control method (Lin Ming) BZ 341
7918 Example Code and Data Size: These are the sizes for the OS-independent
7919 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7920 debug version of the code includes the debug output trace mechanism and
7922 a much larger code and data size.
7925 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7926 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7928 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7929 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7932 2) iASL Compiler/Disassembler:
7934 Implemented support to allow multiple files to be compiled/disassembled
7937 single invocation. This includes command line wildcard support for both
7939 Windows and Unix versions of the compiler. This feature simplifies the
7940 disassembly and compilation of multiple ACPI tables in a single
7943 ----------------------------------------
7944 08 May 2007. Summary of changes for version 20070508:
7946 1) ACPI CA Core Subsystem:
7948 Implemented a Microsoft compatibility design change for the handling of
7950 Notify AML operator. Previously, notify handlers were dispatched and
7951 executed completely asynchronously in a deferred thread. The new design
7952 still executes the notify handlers in a different thread, but the
7954 thread that executed the Notify() now waits at a synchronization point
7956 the notify handler to complete. Some machines depend on a synchronous
7958 operator in order to operate correctly.
7960 Implemented support to allow Package objects to be passed as method
7961 arguments to the external AcpiEvaluateObject interface. Previously, this
7962 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
7963 implemented since there were no reserved control methods that required it
7966 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
7968 contained invalid non-zero values in reserved fields could cause later
7969 failures because these fields have meaning in later revisions of the
7971 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
7973 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
7975 Fixed a problem where the Global Lock handle was not properly updated if
7977 thread that acquired the Global Lock via executing AML code then
7979 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
7983 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
7984 could be corrupted if the interrupt being removed was at the head of the
7985 list. Reported by Linn Crosetto.
7987 Example Code and Data Size: These are the sizes for the OS-independent
7988 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7989 debug version of the code includes the debug output trace mechanism and
7991 a much larger code and data size.
7994 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7995 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7997 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7998 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8000 ----------------------------------------
8001 20 March 2007. Summary of changes for version 20070320:
8003 1) ACPI CA Core Subsystem:
8005 Implemented a change to the order of interpretation and evaluation of AML
8006 operand objects within the AML interpreter. The interpreter now evaluates
8007 operands in the order that they appear in the AML stream (and the
8008 corresponding ASL code), instead of in the reverse order (after the
8010 operand list has been parsed). The previous behavior caused several
8012 incompatibilities with the Microsoft AML interpreter as well as being
8013 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
8015 Implemented a change to the ACPI Global Lock support. All interfaces to
8017 global lock now allow the same thread to acquire the lock multiple times.
8018 This affects the AcpiAcquireGlobalLock external interface to the global
8020 as well as the internal use of the global lock to support AML fields -- a
8021 control method that is holding the global lock can now simultaneously
8023 AML fields that require global lock protection. Previously, in both
8025 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
8027 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
8028 Controller. There is no change to the behavior of the AML Acquire
8030 as this can already be used to acquire a mutex multiple times by the same
8031 thread. BZ 8066. With assistance from Alexey Starikovskiy.
8033 Fixed a problem where invalid objects could be referenced in the AML
8034 Interpreter after error conditions. During operand evaluation, ensure
8036 the internal "Return Object" field is cleared on error and only valid
8037 pointers are stored there. Caused occasional access to deleted objects
8039 resulted in "large reference count" warning messages. Valery Podrezov.
8041 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
8043 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
8046 Fixed an internal problem with the handling of result objects on the
8047 interpreter result stack. BZ 7872. Valery Podrezov.
8049 Removed obsolete code that handled the case where AML_NAME_OP is the
8051 of a reference (Reference.Opcode). This code was no longer necessary. BZ
8052 7874. Valery Podrezov.
8054 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
8057 remnant from the previously discontinued 16-bit support.
8059 Example Code and Data Size: These are the sizes for the OS-independent
8060 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8061 debug version of the code includes the debug output trace mechanism and
8063 a much larger code and data size.
8066 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8067 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8069 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8070 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8072 ----------------------------------------
8073 26 January 2007. Summary of changes for version 20070126:
8075 1) ACPI CA Core Subsystem:
8077 Added the 2007 copyright to all module headers and signons. This affects
8078 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8081 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
8082 during a table load. A bad pointer was passed in the case where the DSDT
8084 overridden, causing a fault in this case.
8086 Example Code and Data Size: These are the sizes for the OS-independent
8087 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8088 debug version of the code includes the debug output trace mechanism and
8090 a much larger code and data size.
8093 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8094 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8096 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8097 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8099 ----------------------------------------
8100 15 December 2006. Summary of changes for version 20061215:
8102 1) ACPI CA Core Subsystem:
8104 Support for 16-bit ACPICA has been completely removed since it is no
8106 necessary and it clutters the code. All 16-bit macros, types, and
8107 conditional compiles have been removed, cleaning up and simplifying the
8109 across the entire subsystem. DOS support is no longer needed since the
8110 bootable Linux firmware kit is now available.
8112 The handler for the Global Lock is now removed during AcpiTerminate to
8113 enable a clean subsystem restart, via the implementation of the
8114 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
8117 Implemented enhancements to the multithreading support within the
8119 to enable improved multithreading debugging and evaluation of the
8123 Debugger: Enhanced the Statistics/Memory command to emit the total
8125 memory used during the execution, as well as the maximum memory consumed
8127 each of the various object types. (Valery Podrezov)
8129 Example Code and Data Size: These are the sizes for the OS-independent
8130 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8131 debug version of the code includes the debug output trace mechanism and
8133 a much larger code and data size.
8136 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8137 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8139 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8140 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8143 2) iASL Compiler/Disassembler and Tools:
8145 AcpiExec: Implemented a new option (-m) to display full memory use
8146 statistics upon subsystem/program termination. (Valery Podrezov)
8148 ----------------------------------------
8149 09 November 2006. Summary of changes for version 20061109:
8151 1) ACPI CA Core Subsystem:
8153 Optimized the Load ASL operator in the case where the source operand is
8155 operation region. Simply map the operation region memory, instead of
8156 performing a bytewise read. (Region must be of type SystemMemory, see
8159 Fixed the Load ASL operator for the case where the source operand is a
8160 region field. A buffer object is also allowed as the source operand. BZ
8163 Fixed a problem where the Load ASL operator allowed the source operand to
8165 an operation region of any type. It is now restricted to regions of type
8166 SystemMemory, as per the ACPI specification. BZ 481
8168 Additional cleanup and optimizations for the new Table Manager code.
8170 AcpiEnable will now fail if all of the required ACPI tables are not
8172 (FADT, FACS, DSDT). BZ 477
8174 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
8176 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
8177 manually optimized to be aligned and will not work if it is byte-packed.
8179 Example Code and Data Size: These are the sizes for the OS-independent
8180 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8181 debug version of the code includes the debug output trace mechanism and
8183 a much larger code and data size.
8186 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8187 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8189 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8190 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8193 2) iASL Compiler/Disassembler and Tools:
8195 Fixed a problem where the presence of the _OSI predefined control method
8196 within complex expressions could cause an internal compiler error.
8198 AcpiExec: Implemented full region support for multiple address spaces.
8199 SpaceId is now part of the REGION object. BZ 429
8201 ----------------------------------------
8202 11 October 2006. Summary of changes for version 20061011:
8204 1) ACPI CA Core Subsystem:
8206 Completed an AML interpreter performance enhancement for control method
8207 execution. Previously a 2-pass parse/execution, control methods are now
8208 completely parsed and executed in a single pass. This improves overall
8209 interpreter performance by ~25%, reduces code size, and reduces CPU stack
8210 use. (Valery Podrezov + interpreter changes in version 20051202 that
8211 eliminated namespace loading during the pass one parse.)
8213 Implemented _CID support for PCI Root Bridge detection. If the _HID does
8215 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
8217 obtained and also checked for an ID match.
8219 Implemented additional support for the PCI _ADR execution: upsearch until
8221 device scope is found before executing _ADR. This allows PCI_Config
8222 operation regions to be declared locally within control methods
8226 Fixed a problem with a possible race condition between threads executing
8227 AcpiWalkNamespace and the AML interpreter. This condition was removed by
8228 modifying AcpiWalkNamespace to (by default) ignore all temporary
8230 entries created during any concurrent control method execution. An
8231 additional namespace race condition is known to exist between
8232 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
8235 Restructured the AML ParseLoop function, breaking it into several
8236 subfunctions in order to reduce CPU stack use and improve
8240 AcpiGetHandle: Fix for parameter validation to detect invalid
8242 of prefix handle and pathname. BZ 478
8244 Example Code and Data Size: These are the sizes for the OS-independent
8245 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8246 debug version of the code includes the debug output trace mechanism and
8248 a much larger code and data size.
8251 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8252 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8254 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8255 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8257 2) iASL Compiler/Disassembler and Tools:
8259 Ported the -g option (get local ACPI tables) to the new ACPICA Table
8261 to restore original behavior.
8263 ----------------------------------------
8264 27 September 2006. Summary of changes for version 20060927:
8266 1) ACPI CA Core Subsystem:
8268 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
8269 These functions now use a spinlock for mutual exclusion and the interrupt
8270 level indication flag is not needed.
8272 Fixed a problem with the Global Lock where the lock could appear to be
8273 obtained before it is actually obtained. The global lock semaphore was
8274 inadvertently created with one unit instead of zero units. (BZ 464)
8278 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
8280 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
8282 Example Code and Data Size: These are the sizes for the OS-independent
8283 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8284 debug version of the code includes the debug output trace mechanism and
8286 a much larger code and data size.
8289 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8290 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8292 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8293 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8296 2) iASL Compiler/Disassembler and Tools:
8298 Fixed a compilation problem with the pre-defined Resource Descriptor
8300 names where an "object does not exist" error could be incorrectly
8302 if the parent ResourceTemplate pathname places the template within a
8303 different namespace scope than the current scope. (BZ 7212)
8305 Fixed a problem where the compiler could hang after syntax errors
8307 in an ElseIf construct. (BZ 453)
8309 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
8310 operator. An incorrect output filename was produced when this parameter
8312 a null string (""). Now, the original input filename is used as the AML
8313 output filename, with an ".aml" extension.
8315 Implemented a generic batch command mode for the AcpiExec utility
8317 any AML debugger command) (Valery Podrezov).
8319 ----------------------------------------
8320 12 September 2006. Summary of changes for version 20060912:
8322 1) ACPI CA Core Subsystem:
8324 Enhanced the implementation of the "serialized mode" of the interpreter
8325 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
8326 specified, instead of creating a serialization semaphore per control
8328 the interpreter lock is simply no longer released before a blocking
8329 operation during control method execution. This effectively makes the AML
8330 Interpreter single-threaded. The overhead of a semaphore per-method is
8333 Fixed a regression where an error was no longer emitted if a control
8335 attempts to create 2 objects of the same name. This once again returns
8336 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
8338 will dynamically serialize the control method to possible prevent future
8341 Integrated a fix for a problem with PCI Express HID detection in the PCI
8342 Config Space setup procedure. (BZ 7145)
8344 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
8345 AcpiHwInitialize function - the FADT registers are now validated when the
8348 Added two new warnings during FADT verification - 1) if the FADT is
8350 than the largest known FADT version, and 2) if there is a mismatch
8353 32-bit block address and the 64-bit X counterpart (when both are non-
8356 Example Code and Data Size: These are the sizes for the OS-independent
8357 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8358 debug version of the code includes the debug output trace mechanism and
8360 a much larger code and data size.
8363 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8364 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8366 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8367 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8370 2) iASL Compiler/Disassembler and Tools:
8372 Fixed a problem with the implementation of the Switch() operator where
8374 temporary variable was declared too close to the actual Switch, instead
8376 at method level. This could cause a problem if the Switch() operator is
8377 within a while loop, causing an error on the second iteration. (BZ 460)
8379 Disassembler - fix for error emitted for unknown type for target of scope
8380 operator. Now, ignore it and continue.
8382 Disassembly of an FADT now verifies the input FADT and reports any errors
8383 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
8385 Disassembly of raw data buffers with byte initialization data now
8387 each output line with the current buffer offset.
8389 Disassembly of ASF! table now includes all variable-length data fields at
8390 the end of some of the subtables.
8392 The disassembler now emits a comment if a buffer appears to be a
8393 ResourceTemplate, but cannot be disassembled as such because the EndTag
8395 not appear at the very end of the buffer.
8397 AcpiExec - Added the "-t" command line option to enable the serialized
8399 of the AML interpreter.
8401 ----------------------------------------
8402 31 August 2006. Summary of changes for version 20060831:
8404 1) ACPI CA Core Subsystem:
8406 Miscellaneous fixes for the Table Manager:
8407 - Correctly initialize internal common FADT for all 64-bit "X" fields
8408 - Fixed a couple table mapping issues during table load
8409 - Fixed a couple alignment issues for IA64
8410 - Initialize input array to zero in AcpiInitializeTables
8411 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
8414 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
8416 immediately disabled to prevent the waking GPE from firing again and to
8417 prevent other wake GPEs from interrupting the wake process.
8419 Added the AcpiGpeCount global that tracks the number of processed GPEs,
8421 be used for debugging systems with a large number of ACPI interrupts.
8423 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
8424 both the ACPICA headers and the disassembler.
8426 Example Code and Data Size: These are the sizes for the OS-independent
8427 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8428 debug version of the code includes the debug output trace mechanism and
8430 a much larger code and data size.
8433 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8434 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8436 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8437 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8440 2) iASL Compiler/Disassembler and Tools:
8442 Disassembler support for the DMAR ACPI table.
8444 ----------------------------------------
8445 23 August 2006. Summary of changes for version 20060823:
8447 1) ACPI CA Core Subsystem:
8449 The Table Manager component has been completely redesigned and
8450 reimplemented. The new design is much simpler, and reduces the overall
8452 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
8454 now possible to obtain the ACPI tables very early during kernel
8455 initialization, even before dynamic memory management is initialized.
8456 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
8458 Obsolete ACPICA interfaces:
8460 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
8463 - AcpiLoadTable: Not needed.
8464 - AcpiUnloadTable: Not needed.
8466 New ACPICA interfaces:
8468 - AcpiInitializeTables: Must be called before the table manager can be
8470 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
8471 allocated memory after it becomes available.
8472 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
8476 Other ACPICA changes:
8478 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
8480 AcpiOsUnmapMemory to free this mapping.
8481 - AcpiGetTable returns the actual mapped table. The mapping is managed
8482 internally and must not be deleted by the caller. Use of this interface
8483 causes no additional dynamic memory allocation.
8484 - AcpiFindRootPointer: Support for physical addressing has been
8486 it appeared to be unused.
8487 - The interface to AcpiOsMapMemory has changed to be consistent with the
8488 other allocation interfaces.
8489 - The interface to AcpiOsGetRootPointer has changed to eliminate
8492 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
8494 bit platforms. Was previously 64 bits on all platforms.
8495 - The interface to the ACPI Global Lock acquire/release macros have
8497 slightly since ACPICA no longer keeps a local copy of the FACS with a
8498 constructed pointer to the actual global lock.
8500 Porting to the new table manager:
8502 - AcpiInitializeTables: Must be called once, and can be called anytime
8503 during the OS initialization process. It allows the host to specify an
8505 of memory to be used to store the internal version of the RSDT/XSDT (root
8506 table). This allows the host to access ACPI tables before memory
8508 is initialized and running.
8509 - AcpiReallocateRootTable: Can be called after memory management is
8511 to copy the root table to a dynamically allocated array, freeing up the
8512 scratch memory specified in the call to AcpiInitializeTables.
8513 - AcpiSubsystemInitialize: This existing interface is independent of the
8514 Table Manager, and does not have to be called before the Table Manager
8516 be used, it only must be called before the rest of ACPICA can be used.
8517 - ACPI Tables: Some changes have been made to the names and structure of
8519 actbl.h and actbl1.h header files and may require changes to existing
8521 For example, bitfields have been completely removed because of their lack
8523 portability across C compilers.
8524 - Update interfaces to the Global Lock acquire/release macros if local
8525 versions are used. (see acwin.h)
8527 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
8531 Example Code and Data Size: These are the sizes for the OS-independent
8532 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8533 debug version of the code includes the debug output trace mechanism and
8535 a much larger code and data size.
8538 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8539 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8541 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8542 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8545 2) iASL Compiler/Disassembler and Tools:
8547 No changes for this release.
8549 ----------------------------------------
8550 21 July 2006. Summary of changes for version 20060721:
8552 1) ACPI CA Core Subsystem:
8554 The full source code for the ASL test suite used to validate the iASL
8555 compiler and the ACPICA core subsystem is being released with the ACPICA
8556 source for the first time. The source is contained in a separate package
8558 consists of over 1100 files that exercise all ASL/AML operators. The
8560 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
8564 Completed a new design and implementation for support of the ACPI Global
8565 Lock. On the OS side, the global lock is now treated as a standard AML
8566 mutex. Previously, multiple OS threads could "acquire" the global lock
8567 simultaneously. However, this could cause the BIOS to be starved out of
8569 lock - especially in cases such as the Embedded Controller driver where
8570 there is a tight coupling between the OS and the BIOS.
8572 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
8573 The Global Lock interrupt handler no longer queues the execution of a
8574 separate thread to signal the global lock semaphore. Instead, the
8576 is signaled directly from the interrupt handler.
8578 Implemented support within the AML interpreter for package objects that
8579 contain a larger AML length (package list length) than the package
8581 count. In this case, the length of the package is truncated to match the
8582 package element count. Some BIOS code apparently modifies the package
8584 on the fly, and this change supports this behavior. Provides
8586 with the MS AML interpreter. (With assistance from Fiodor Suietov)
8588 Implemented a temporary fix for the BankValue parameter of a Bank Field
8590 support all constant values, now including the Zero and One opcodes.
8591 Evaluation of this parameter must eventually be converted to a full
8593 evaluation. A not-implemented error is now returned (temporarily) for
8595 constant values for this parameter.
8597 Fixed problem reports (Fiodor Suietov) integrated:
8598 - Fix for premature object deletion after CopyObject on Operation Region
8602 Example Code and Data Size: These are the sizes for the OS-independent
8603 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8604 debug version of the code includes the debug output trace mechanism and
8606 a much larger code and data size.
8609 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
8610 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
8612 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8613 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8616 2) iASL Compiler/Disassembler and Tools:
8618 No changes for this release.
8620 ----------------------------------------
8621 07 July 2006. Summary of changes for version 20060707:
8623 1) ACPI CA Core Subsystem:
8625 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
8626 that do not allow the initialization of address pointers within packed
8627 structures - even though the hardware itself may support misaligned
8628 transfers. Some of the debug data structures are packed by default to
8631 Added an error message for the case where AcpiOsGetThreadId() returns
8633 A non-zero value is required by the core ACPICA code to ensure the proper
8634 operation of AML mutexes and recursive control methods.
8636 The DSDT is now the only ACPI table that determines whether the AML
8637 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
8639 the hooks for per-table 32/64 switching have been removed from the code.
8641 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
8643 Fixed a possible leak of an OwnerID in the error path of
8644 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
8645 deletion to a single place in AcpiTbUninstallTable to correct possible
8647 when using the AcpiTbDeleteTablesByType interface (with assistance from
8650 Fixed a problem with Serialized control methods where the semaphore
8651 associated with the method could be over-signaled after multiple method
8654 Fixed two issues with the locking of the internal namespace data
8656 Both the Unload() operator and AcpiUnloadTable interface now lock the
8657 namespace during the namespace deletion associated with the table unload
8658 (with assistance from Linn Crosetto.)
8660 Fixed problem reports (Valery Podrezov) integrated:
8661 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
8663 Fixed problem reports (Fiodor Suietov) integrated:
8664 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
8665 - On Address Space handler deletion, needless deactivation call (BZ 374)
8666 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
8668 - Possible memory leak, Notify sub-objects of Processor, Power,
8671 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
8672 - Minimum Length of RSDT should be validated (BZ 379)
8673 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
8675 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
8679 Example Code and Data Size: These are the sizes for the OS-independent
8680 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8681 debug version of the code includes the debug output trace mechanism and
8683 a much larger code and data size.
8686 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
8687 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
8689 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8690 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8693 2) iASL Compiler/Disassembler and Tools:
8695 Fixed problem reports:
8696 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
8699 ----------------------------------------
8700 23 June 2006. Summary of changes for version 20060623:
8702 1) ACPI CA Core Subsystem:
8704 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
8705 allows the type to be customized to the host OS for improved efficiency
8706 (since a spinlock is usually a very small object.)
8708 Implemented support for "ignored" bits in the ACPI registers. According
8710 the ACPI specification, these bits should be preserved when writing the
8711 registers via a read/modify/write cycle. There are 3 bits preserved in
8713 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
8715 Implemented the initial deployment of new OSL mutex interfaces. Since
8717 host operating systems have separate mutex and semaphore objects, this
8718 feature was requested. The base code now uses mutexes (and the new mutex
8719 interfaces) wherever a binary semaphore was used previously. However, for
8720 the current release, the mutex interfaces are defined as macros to map
8722 to the existing semaphore interfaces. Therefore, no OSL changes are
8724 at this time. (See acpiosxf.h)
8726 Fixed several problems with the support for the control method SyncLevel
8727 parameter. The SyncLevel now works according to the ACPI specification
8729 in concert with the Mutex SyncLevel parameter, since the current
8731 is a property of the executing thread. Mutual exclusion for control
8733 is now implemented with a mutex instead of a semaphore.
8735 Fixed three instances of the use of the C shift operator in the bitfield
8736 support code (exfldio.c) to avoid the use of a shift value larger than
8738 target data width. The behavior of C compilers is undefined in this case
8740 can cause unpredictable results, and therefore the case must be detected
8742 avoided. (Fiodor Suietov)
8744 Added an info message whenever an SSDT or OEM table is loaded dynamically
8745 via the Load() or LoadTable() ASL operators. This should improve
8747 capability since it will show exactly what tables have been loaded
8749 the tables present in the RSDT/XSDT.)
8751 Example Code and Data Size: These are the sizes for the OS-independent
8752 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8753 debug version of the code includes the debug output trace mechanism and
8755 a much larger code and data size.
8758 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8759 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8761 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
8762 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
8765 2) iASL Compiler/Disassembler and Tools:
8767 No changes for this release.
8769 ----------------------------------------
8770 08 June 2006. Summary of changes for version 20060608:
8772 1) ACPI CA Core Subsystem:
8774 Converted the locking mutex used for the ACPI hardware to a spinlock.
8776 change should eliminate all problems caused by attempting to acquire a
8777 semaphore at interrupt level, and it means that all ACPICA external
8778 interfaces that directly access the ACPI hardware can be safely called
8780 interrupt level. OSL code that implements the semaphore interfaces should
8782 able to eliminate any workarounds for being called at interrupt level.
8784 Fixed a regression introduced in 20060526 where the ACPI device
8785 initialization could be prematurely aborted with an AE_NOT_FOUND if a
8787 did not have an optional _INI method.
8789 Fixed an IndexField issue where a write to the Data Register should be
8790 limited in size to the AccessSize (width) of the IndexField itself. (BZ
8794 Fixed problem reports (Valery Podrezov) integrated:
8795 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
8797 Fixed problem reports (Fiodor Suietov) integrated:
8798 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
8800 Removed four global mutexes that were obsolete and were no longer being
8803 Example Code and Data Size: These are the sizes for the OS-independent
8804 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8805 debug version of the code includes the debug output trace mechanism and
8807 a much larger code and data size.
8810 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8811 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8813 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8814 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8817 2) iASL Compiler/Disassembler and Tools:
8819 Fixed a fault when using -g option (get tables from registry) on Windows
8822 Fixed problem reports integrated:
8823 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
8824 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
8826 - Global table revision override (-r) is ignored (BZ 413)
8828 ----------------------------------------
8829 26 May 2006. Summary of changes for version 20060526:
8831 1) ACPI CA Core Subsystem:
8833 Restructured, flattened, and simplified the internal interfaces for
8834 namespace object evaluation - resulting in smaller code, less CPU stack
8836 and fewer interfaces. (With assistance from Mikhail Kouzmich)
8838 Fixed a problem with the CopyObject operator where the first parameter
8840 not typed correctly for the parser, interpreter, compiler, and
8842 Caused various errors and unexpected behavior.
8844 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
8845 produced incorrect results with some C compilers. Since the behavior of C
8846 compilers when the shift value is larger than the datatype width is
8847 apparently not well defined, the interpreter now detects this condition
8849 simply returns zero as expected in all such cases. (BZ 395)
8851 Fixed problem reports (Valery Podrezov) integrated:
8852 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
8853 - Allow interpreter to handle nested method declarations (BZ 5361)
8855 Fixed problem reports (Fiodor Suietov) integrated:
8856 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
8858 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
8860 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
8861 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
8862 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
8863 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
8864 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
8865 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
8866 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
8868 - Status of the Global Initialization Handler call not used (BZ 366)
8869 - Incorrect object parameter to Global Initialization Handler (BZ 367)
8871 Example Code and Data Size: These are the sizes for the OS-independent
8872 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8873 debug version of the code includes the debug output trace mechanism and
8875 a much larger code and data size.
8878 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8879 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8881 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8882 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8885 2) iASL Compiler/Disassembler and Tools:
8887 Modified the parser to allow the names IO, DMA, and IRQ to be used as
8888 namespace identifiers with no collision with existing resource descriptor
8889 macro names. This provides compatibility with other ASL compilers and is
8890 most useful for disassembly/recompilation of existing tables without
8892 errors. (With assistance from Thomas Renninger)
8894 Disassembler: fixed an incorrect disassembly problem with the
8895 DataTableRegion and CopyObject operators. Fixed a possible fault during
8896 disassembly of some Alias operators.
8898 ----------------------------------------
8899 12 May 2006. Summary of changes for version 20060512:
8901 1) ACPI CA Core Subsystem:
8903 Replaced the AcpiOsQueueForExecution interface with a new interface named
8904 AcpiOsExecute. The major difference is that the new interface does not
8906 a Priority parameter, this appeared to be useless and has been replaced
8909 Type parameter. The Type tells the host what type of execution is being
8910 requested, such as global lock handler, notify handler, GPE handler, etc.
8911 This allows the host to queue and execute the request as appropriate for
8913 request type, possibly using different work queues and different
8915 for the various request types. This enables fixes for multithreading
8916 deadlock problems such as BZ #5534, and will require changes to all
8918 OS interface layers. (Alexey Starikovskiy and Bob Moore)
8920 Fixed a possible memory leak associated with the support for the so-
8922 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
8925 Fixed a problem with the Load() operator where a table load from an
8926 operation region could overwrite an internal table buffer by up to 7
8928 and cause alignment faults on IPF systems. (With assistance from Luming
8931 Example Code and Data Size: These are the sizes for the OS-independent
8932 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8933 debug version of the code includes the debug output trace mechanism and
8935 a much larger code and data size.
8938 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8939 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8941 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8942 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8946 2) iASL Compiler/Disassembler and Tools:
8948 Disassembler: Implemented support to cross reference the internal
8950 and automatically generate ASL External() statements for symbols not
8952 within the current table being disassembled. This will simplify the
8953 disassembly and recompilation of interdependent tables such as SSDTs
8955 these statements will no longer have to be added manually.
8957 Disassembler: Implemented experimental support to automatically detect
8958 invocations of external control methods and generate appropriate
8960 statements. This is problematic because the AML cannot be correctly
8962 until the number of arguments for each control method is known.
8964 standalone method invocations and invocations as the source operand of a
8965 Store() statement are supported.
8967 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
8968 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
8969 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
8970 more readable and likely closer to the original ASL source.
8972 ----------------------------------------
8973 21 April 2006. Summary of changes for version 20060421:
8975 1) ACPI CA Core Subsystem:
8977 Removed a device initialization optimization introduced in 20051216 where
8978 the _STA method was not run unless an _INI was also present for the same
8979 device. This optimization could cause problems because it could allow
8981 methods to be run within a not-present device subtree. (If a not-present
8982 device had no _INI, _STA would not be run, the not-present status would
8984 be discovered, and the children of the device would be incorrectly
8987 Implemented a new _STA optimization where namespace subtrees that do not
8988 contain _INI are identified and ignored during device initialization.
8989 Selectively running _STA can significantly improve boot time on large
8990 machines (with assistance from Len Brown.)
8992 Implemented support for the device initialization case where the returned
8993 _STA flags indicate a device not-present but functioning. In this case,
8995 is not run, but the device children are examined for presence, as per the
8998 Implemented an additional change to the IndexField support in order to
8999 conform to MS behavior. The value written to the Index Register is not
9000 simply a byte offset, it is a byte offset in units of the access width of
9001 the parent Index Field. (Fiodor Suietov)
9003 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
9004 interface is called during the creation of all AML operation regions, and
9005 allows the host OS to exert control over what addresses it will allow the
9006 AML code to access. Operation Regions whose addresses are disallowed will
9007 cause a runtime exception when they are actually accessed (will not
9009 or abort table loading.) See oswinxf or osunixxf for an example
9012 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
9013 interface allows the host OS to match the various "optional"
9014 interface/behavior strings for the _OSI predefined control method as
9015 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
9016 for an example implementation.
9018 Restructured and corrected various problems in the exception handling
9020 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
9021 (with assistance from Takayoshi Kochi.)
9023 Modified the Linux source converter to ignore quoted string literals
9025 converting identifiers from mixed to lower case. This will correct
9027 with the disassembler and other areas where such strings must not be
9030 The ACPI_FUNCTION_* macros no longer require quotes around the function
9031 name. This allows the Linux source converter to convert the names, now
9033 the converter ignores quoted strings.
9035 Example Code and Data Size: These are the sizes for the OS-independent
9036 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9037 debug version of the code includes the debug output trace mechanism and
9039 a much larger code and data size.
9043 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9044 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9046 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9047 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9050 2) iASL Compiler/Disassembler and Tools:
9052 Implemented 3 new warnings for iASL, and implemented multiple warning
9056 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
9058 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
9059 check for the possible timeout, a warning is issued.
9061 2) Useless operators: If an ASL operator does not specify an optional
9063 operand and it also does not use the function return value from the
9064 operator, a warning is issued since the operator effectively does
9067 3) Unreferenced objects: If a namespace object is created, but never
9068 referenced, a warning is issued. This is a warning level 2 since there
9070 cases where this is ok, such as when a secondary table is loaded that
9072 the unreferenced objects. Even so, care is taken to only flag objects
9074 don't look like they will ever be used. For example, the reserved methods
9075 (starting with an underscore) are usually not referenced because it is
9076 expected that the OS will invoke them.
9078 ----------------------------------------
9079 31 March 2006. Summary of changes for version 20060331:
9081 1) ACPI CA Core Subsystem:
9083 Implemented header file support for the following additional ACPI tables:
9084 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
9086 all current and known ACPI tables are now defined in the ACPICA headers
9088 are available for use by device drivers and other software.
9090 Implemented support to allow tables that contain ACPI names with invalid
9091 characters to be loaded. Previously, this would cause the table load to
9092 fail, but since there are several known cases of such tables on existing
9093 machines, this change was made to enable ACPI support for them. Also,
9095 matches the behavior of the Microsoft ACPI implementation.
9097 Fixed a couple regressions introduced during the memory optimization in
9099 20060317 release. The namespace node definition required additional
9100 reorganization and an internal datatype that had been changed to 8-bit
9102 restored to 32-bit. (Valery Podrezov)
9104 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
9105 could be passed through to AcpiOsReleaseObject which is unexpected. Such
9106 null pointers are now trapped and ignored, matching the behavior of the
9107 previous implementation before the deployment of AcpiOsReleaseObject.
9108 (Valery Podrezov, Fiodor Suietov)
9110 Fixed a memory mapping leak during the deletion of a SystemMemory
9112 region where a cached memory mapping was not deleted. This became a
9113 noticeable problem for operation regions that are defined within
9115 used control methods. (Dana Meyers)
9117 Reorganized the ACPI table header files into two main files: one for the
9118 ACPI tables consumed by the ACPICA core, and another for the
9120 ACPI tables that are consumed by the drivers and other software. The
9122 FADT definitions were merged into one common section and three different
9123 tables (ACPI 1.0, 1.0+, and 2.0)
9125 Example Code and Data Size: These are the sizes for the OS-independent
9126 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9127 debug version of the code includes the debug output trace mechanism and
9129 a much larger code and data size.
9132 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9133 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9135 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9136 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9139 2) iASL Compiler/Disassembler and Tools:
9141 Disassembler: Implemented support to decode and format all non-AML ACPI
9142 tables (tables other than DSDTs and SSDTs.) This includes the new tables
9143 added to the ACPICA headers, therefore all current and known ACPI tables
9147 Disassembler: The change to allow ACPI names with invalid characters also
9148 enables the disassembly of such tables. Invalid characters within names
9150 changed to '*' to make the name printable; the iASL compiler will still
9151 generate an error for such names, however, since this is an invalid ACPI
9154 Implemented an option for AcpiXtract (-a) to extract all tables found in
9156 input file. The default invocation extracts only the DSDTs and SSDTs.
9158 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
9159 makefile for the AcpiXtract utility.
9161 ----------------------------------------
9162 17 March 2006. Summary of changes for version 20060317:
9164 1) ACPI CA Core Subsystem:
9166 Implemented the use of a cache object for all internal namespace nodes.
9167 Since there are about 1000 static nodes in a typical system, this will
9168 decrease memory use for cache implementations that minimize per-
9170 overhead (such as a slab allocator.)
9172 Removed the reference count mechanism for internal namespace nodes, since
9174 was deemed unnecessary. This reduces the size of each namespace node by
9175 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
9177 and 32 bytes for the 64-bit case.
9179 Optimized several internal data structures to reduce object size on 64-
9181 platforms by packing data within the 64-bit alignment. This includes the
9182 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
9183 instances corresponding to the namespace objects.
9185 Added two new strings for the predefined _OSI method: "Windows 2001.1
9189 Split the allocation tracking mechanism out to a separate file, from
9190 utalloc.c to uttrack.c. This mechanism appears to be only useful for
9191 application-level code. Kernels may wish to not include uttrack.c in
9194 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
9196 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
9199 Code and Data Size: These are the sizes for the acpica.lib produced by
9201 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9203 driver or OSPM code. The debug version of the code includes the debug
9205 trace mechanism and has a much larger code and data size. Note that these
9206 values will vary depending on the efficiency of the compiler and the
9207 compiler options used during generation.
9210 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9211 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9213 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9214 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9217 2) iASL Compiler/Disassembler and Tools:
9219 Implemented an ANSI C version of the acpixtract utility. This version
9221 automatically extract the DSDT and all SSDTs from the input acpidump text
9222 file and dump the binary output to separate files. It can also display a
9223 summary of the input file including the headers for each table found and
9224 will extract any single ACPI table, with any signature. (See
9225 source/tools/acpixtract)
9227 ----------------------------------------
9228 10 March 2006. Summary of changes for version 20060310:
9230 1) ACPI CA Core Subsystem:
9232 Tagged all external interfaces to the subsystem with the new
9233 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
9235 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
9236 macro. The default definition is NULL.
9238 Added the ACPI_THREAD_ID type for the return value from
9240 This allows the host to define this as necessary to simplify kernel
9241 integration. The default definition is ACPI_NATIVE_UINT.
9243 Fixed two interpreter problems related to error processing, the deletion
9245 objects, and placing invalid pointers onto the internal operator result
9246 stack. BZ 6028, 6151 (Valery Podrezov)
9248 Increased the reference count threshold where a warning is emitted for
9250 reference counts in order to eliminate unnecessary warnings on systems
9252 large namespaces (especially 64-bit.) Increased the value from 0x400 to
9255 Due to universal disagreement as to the meaning of the 'c' in the
9257 function, the ACPI_MEM_CALLOCATE macro has been renamed to
9258 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
9259 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
9262 Code and Data Size: These are the sizes for the acpica.lib produced by
9264 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9266 driver or OSPM code. The debug version of the code includes the debug
9268 trace mechanism and has a much larger code and data size. Note that these
9269 values will vary depending on the efficiency of the compiler and the
9270 compiler options used during generation.
9273 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9274 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9276 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9277 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9280 2) iASL Compiler/Disassembler:
9282 Disassembler: implemented support for symbolic resource descriptor
9283 references. If a CreateXxxxField operator references a fixed offset
9286 resource descriptor, a name is assigned to the descriptor and the offset
9288 translated to the appropriate resource tag and pathname. The addition of
9289 this support brings the disassembled code very close to the original ASL
9290 source code and helps eliminate run-time errors when the disassembled
9292 is modified (and recompiled) in such a way as to invalidate the original
9295 Implemented support for a Descriptor Name as the last parameter to the
9297 Register() macro. This parameter was inadvertently left out of the ACPI
9298 specification, and will be added for ACPI 3.0b.
9300 Fixed a problem where the use of the "_OSI" string (versus the full path
9301 "\_OSI") caused an internal compiler error. ("No back ptr to op")
9303 Fixed a problem with the error message that occurs when an invalid string
9305 used for a _HID object (such as one with an embedded asterisk:
9307 The correct message is now displayed.
9309 ----------------------------------------
9310 17 February 2006. Summary of changes for version 20060217:
9312 1) ACPI CA Core Subsystem:
9314 Implemented a change to the IndexField support to match the behavior of
9316 Microsoft AML interpreter. The value written to the Index register is now
9318 byte offset, no longer an index based upon the width of the Data
9320 This should fix IndexField problems seen on some machines where the Data
9321 register is not exactly one byte wide. The ACPI specification will be
9322 clarified on this point.
9324 Fixed a problem where several resource descriptor types could overrun the
9325 internal descriptor buffer due to size miscalculation: VendorShort,
9326 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
9327 affect all platforms.
9329 Fixed a problem where individual resource descriptors were misaligned
9331 the internal buffer, causing alignment faults on IA64 platforms.
9333 Code and Data Size: These are the sizes for the acpica.lib produced by
9335 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9337 driver or OSPM code. The debug version of the code includes the debug
9339 trace mechanism and has a much larger code and data size. Note that these
9340 values will vary depending on the efficiency of the compiler and the
9341 compiler options used during generation.
9344 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9345 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9347 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9348 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9351 2) iASL Compiler/Disassembler:
9353 Implemented support for new reserved names: _WDG and _WED are Microsoft
9354 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
9355 defined method (Throttling Depth Limit.)
9357 Fixed a problem where a zero-length VendorShort or VendorLong resource
9358 descriptor was incorrectly emitted as a descriptor of length one.
9360 ----------------------------------------
9361 10 February 2006. Summary of changes for version 20060210:
9363 1) ACPI CA Core Subsystem:
9365 Removed a couple of extraneous ACPI_ERROR messages that appeared during
9366 normal execution. These became apparent after the conversion from
9369 Fixed a problem where the CreateField operator could hang if the BitIndex
9371 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
9373 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
9374 failed with an exception. This also fixes a couple of related RefOf and
9375 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
9377 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
9379 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
9383 Implemented a memory cleanup at the end of the execution of each
9385 of an AML While() loop, preventing the accumulation of outstanding
9387 (Valery Podrezov, BZ 5427)
9389 Eliminated a chunk of duplicate code in the object resolution code.
9393 Fixed several warnings during the 64-bit code generation.
9395 The AcpiSrc source code conversion tool now inserts one line of
9397 after an if() statement that is followed immediately by a comment,
9399 readability of the Linux code.
9401 Code and Data Size: The current and previous library sizes for the core
9402 subsystem are shown below. These are the code and data sizes for the
9403 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9405 values do not include any ACPI driver or OSPM code. The debug version of
9407 code includes the debug output trace mechanism and has a much larger code
9408 and data size. Note that these values will vary depending on the
9410 of the compiler and the compiler options used during generation.
9413 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9414 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9416 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9417 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9420 2) iASL Compiler/Disassembler:
9422 Fixed a problem with the disassembly of a BankField operator with a
9424 expression for the BankValue parameter.
9426 ----------------------------------------
9427 27 January 2006. Summary of changes for version 20060127:
9429 1) ACPI CA Core Subsystem:
9431 Implemented support in the Resource Manager to allow unresolved
9433 references within resource package objects for the _PRT method. This
9435 is in addition to the previously implemented unresolved reference support
9436 within the AML parser. If the interpreter slack mode is enabled, these
9437 unresolved references will be passed through to the caller as a NULL
9441 Implemented and deployed new macros and functions for error and warning
9442 messages across the subsystem. These macros are simpler and generate less
9443 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
9444 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
9445 macros remain defined to allow ACPI drivers time to migrate to the new
9448 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
9450 Acquire/Release Lock OSL interfaces.
9452 Fixed a problem where Alias ASL operators are sometimes not correctly
9453 resolved, in both the interpreter and the iASL compiler.
9455 Fixed several problems with the implementation of the
9456 ConcatenateResTemplate
9457 ASL operator. As per the ACPI specification, zero length buffers are now
9458 treated as a single EndTag. One-length buffers always cause a fatal
9459 exception. Non-zero length buffers that do not end with a full 2-byte
9461 cause a fatal exception.
9463 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
9464 interface. (With assistance from Thomas Renninger)
9466 Code and Data Size: The current and previous library sizes for the core
9467 subsystem are shown below. These are the code and data sizes for the
9468 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9470 values do not include any ACPI driver or OSPM code. The debug version of
9472 code includes the debug output trace mechanism and has a much larger code
9473 and data size. Note that these values will vary depending on the
9475 of the compiler and the compiler options used during generation.
9478 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9479 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9481 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9482 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9485 2) iASL Compiler/Disassembler:
9487 Fixed an internal error that was generated for any forward references to
9491 ----------------------------------------
9492 13 January 2006. Summary of changes for version 20060113:
9494 1) ACPI CA Core Subsystem:
9496 Added 2006 copyright to all module headers and signons. This affects
9497 virtually every file in the ACPICA core subsystem, iASL compiler, and the
9500 Enhanced the ACPICA error reporting in order to simplify user migration
9502 the non-debug version of ACPICA. Replaced all instances of the
9503 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
9505 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
9506 respectively. This preserves all error and warning messages in the non-
9508 version of the ACPICA code (this has been referred to as the "debug lite"
9509 option.) Over 200 cases were converted to create a total of over 380
9510 error/warning messages across the ACPICA code. This increases the code
9512 data size of the default non-debug version of the code somewhat (about
9514 but all error/warning reporting may be disabled if desired (and code
9515 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
9516 configuration option. The size of the debug version of ACPICA remains
9520 Fixed a memory leak within the AML Debugger "Set" command. One object was
9521 not properly deleted for every successful invocation of the command.
9523 Code and Data Size: The current and previous library sizes for the core
9524 subsystem are shown below. These are the code and data sizes for the
9525 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9527 values do not include any ACPI driver or OSPM code. The debug version of
9529 code includes the debug output trace mechanism and has a much larger code
9530 and data size. Note that these values will vary depending on the
9532 of the compiler and the compiler options used during generation.
9535 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9536 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9538 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9539 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9542 2) iASL Compiler/Disassembler:
9544 The compiler now officially supports the ACPI 3.0a specification that was
9545 released on December 30, 2005. (Specification is available at
9548 ----------------------------------------
9549 16 December 2005. Summary of changes for version 20051216:
9551 1) ACPI CA Core Subsystem:
9553 Implemented optional support to allow unresolved names within ASL Package
9554 objects. A null object is inserted in the package when a named reference
9555 cannot be located in the current namespace. Enabled via the interpreter
9556 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
9558 that contain such code.
9560 Implemented an optimization to the initialization sequence that can
9562 boot time. During ACPI device initialization, the _STA method is now run
9564 and only if the _INI method exists. The _STA method is used to determine
9566 the device is present; An _INI can only be run if _STA returns present,
9568 it is a waste of time to run the _STA method if the _INI does not exist.
9569 (Prototype and assistance from Dong Wei)
9571 Implemented use of the C99 uintptr_t for the pointer casting macros if it
9573 available in the current compiler. Otherwise, the default (void *) cast
9577 Fixed some possible memory leaks found within the execution path of the
9578 Break, Continue, If, and CreateField operators. (Valery Podrezov)
9580 Fixed a problem introduced in the 20051202 release where an exception is
9581 generated during method execution if a control method attempts to declare
9584 Moved resource descriptor string constants that are used by both the AML
9585 disassembler and AML debugger to the common utilities directory so that
9586 these components are independent.
9588 Implemented support in the AcpiExec utility (-e switch) to globally
9590 exceptions during control method execution (method is not aborted.)
9592 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
9595 Code and Data Size: The current and previous library sizes for the core
9596 subsystem are shown below. These are the code and data sizes for the
9597 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9599 values do not include any ACPI driver or OSPM code. The debug version of
9601 code includes the debug output trace mechanism and has a much larger code
9602 and data size. Note that these values will vary depending on the
9604 of the compiler and the compiler options used during generation.
9607 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9608 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9610 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9611 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9614 2) iASL Compiler/Disassembler:
9616 Fixed a problem where a CPU stack overflow fault could occur if a
9618 method call was made from within a Return statement.
9620 ----------------------------------------
9621 02 December 2005. Summary of changes for version 20051202:
9623 1) ACPI CA Core Subsystem:
9625 Modified the parsing of control methods to no longer create namespace
9626 objects during the first pass of the parse. Objects are now created only
9627 during the execute phase, at the moment the namespace creation operator
9629 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
9631 should eliminate ALREADY_EXISTS exceptions seen on some machines where
9632 reentrant control methods are protected by an AML mutex. The mutex will
9634 correctly block multiple threads from attempting to create the same
9638 Increased the number of available Owner Ids for namespace object tracking
9639 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
9641 some machines with a large number of ACPI tables (either static or
9644 Fixed a problem with the AcpiExec utility where a fault could occur when
9646 -b switch (batch mode) is used.
9648 Enhanced the namespace dump routine to output the owner ID for each
9651 Code and Data Size: The current and previous library sizes for the core
9652 subsystem are shown below. These are the code and data sizes for the
9653 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9655 values do not include any ACPI driver or OSPM code. The debug version of
9657 code includes the debug output trace mechanism and has a much larger code
9658 and data size. Note that these values will vary depending on the
9660 of the compiler and the compiler options used during generation.
9663 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9664 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9666 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9667 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9670 2) iASL Compiler/Disassembler:
9672 Fixed a parse error during compilation of certain Switch/Case constructs.
9674 simplify the parse, the grammar now allows for multiple Default
9676 and this error is now detected and flagged during the analysis phase.
9678 Disassembler: The disassembly now includes the contents of the original
9679 table header within a comment at the start of the file. This includes the
9680 name and version of the original ASL compiler.
9682 ----------------------------------------
9683 17 November 2005. Summary of changes for version 20051117:
9685 1) ACPI CA Core Subsystem:
9687 Fixed a problem in the AML parser where the method thread count could be
9688 decremented below zero if any errors occurred during the method parse
9690 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
9692 This also fixed a related regression with the mechanism that detects and
9693 corrects methods that cannot properly handle reentrancy (related to the
9694 deployment of the new OwnerId mechanism.)
9696 Eliminated the pre-parsing of control methods (to detect errors) during
9697 table load. Related to the problem above, this was causing unwind issues
9699 any errors occurred during the parse, and it seemed to be overkill. A
9701 load should not be aborted if there are problems with any single control
9702 method, thus rendering this feature rather pointless.
9704 Fixed a problem with the new table-driven resource manager where an
9706 buffer overflow could occur for small resource templates.
9708 Implemented a new external interface, AcpiGetVendorResource. This
9710 will find and return a vendor-defined resource descriptor within a _CRS
9712 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
9715 Removed the length limit (200) on string objects as per the upcoming ACPI
9716 3.0A specification. This affects the following areas of the interpreter:
9718 any implicit conversion of a Buffer to a String, 2) a String object
9720 of the ASL Concatentate operator, 3) the String object result of the ASL
9723 Fixed a problem in the Windows OS interface layer (OSL) where a
9725 on a semaphore object would incorrectly timeout. This allows the
9726 multithreading features of the AcpiExec utility to work properly under
9729 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
9730 the recently added file named "utresrc.c".
9732 Code and Data Size: The current and previous library sizes for the core
9733 subsystem are shown below. These are the code and data sizes for the
9734 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9736 values do not include any ACPI driver or OSPM code. The debug version of
9738 code includes the debug output trace mechanism and has a much larger code
9739 and data size. Note that these values will vary depending on the
9741 of the compiler and the compiler options used during generation.
9744 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9745 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9747 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9748 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9751 2) iASL Compiler/Disassembler:
9753 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
9754 specification. For the iASL compiler, this means that string literals
9756 the source ASL can be of any length.
9758 Enhanced the listing output to dump the AML code for resource descriptors
9759 immediately after the ASL code for each descriptor, instead of in a block
9761 the end of the entire resource template.
9763 Enhanced the compiler debug output to dump the entire original parse tree
9764 constructed during the parse phase, before any transforms are applied to
9766 tree. The transformed tree is dumped also.
9768 ----------------------------------------
9769 02 November 2005. Summary of changes for version 20051102:
9771 1) ACPI CA Core Subsystem:
9773 Modified the subsystem initialization sequence to improve GPE support.
9775 GPE initialization has been split into two parts in order to defer
9777 of the _PRW methods (Power Resources for Wake) until after the hardware
9779 fully initialized and the SCI handler is installed. This allows the _PRW
9780 methods to access fields protected by the Global Lock. This will fix
9782 where a NO_GLOBAL_LOCK exception has been seen during initialization.
9784 Converted the ACPI internal object disassemble and display code within
9786 AML debugger to fully table-driven operation, reducing code size and
9787 increasing maintainability.
9789 Fixed a regression with the ConcatenateResTemplate() ASL operator
9791 in the 20051021 release.
9793 Implemented support for "local" internal ACPI object types within the
9794 debugger "Object" command and the AcpiWalkNamespace external interfaces.
9795 These local types include RegionFields, BankFields, IndexFields, Alias,
9799 Moved common AML resource handling code into a new file, "utresrc.c".
9801 code is shared by both the Resource Manager and the AML Debugger.
9803 Code and Data Size: The current and previous library sizes for the core
9804 subsystem are shown below. These are the code and data sizes for the
9805 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9807 values do not include any ACPI driver or OSPM code. The debug version of
9809 code includes the debug output trace mechanism and has a much larger code
9810 and data size. Note that these values will vary depending on the
9812 of the compiler and the compiler options used during generation.
9815 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9816 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9818 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9819 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9822 2) iASL Compiler/Disassembler:
9824 Fixed a problem with very large initializer lists (more than 4000
9826 for both Buffer and Package objects where the parse stack could overflow.
9828 Enhanced the pre-compile source code scan for non-ASCII characters to
9830 characters within comment fields. The scan is now always performed and is
9832 longer optional, detecting invalid characters within a source file
9833 immediately rather than during the parse phase or later.
9835 Enhanced the ASL grammar definition to force early reductions on all
9837 style grammar elements so that the overall parse stack usage is greatly
9838 reduced. This should improve performance and reduce the possibility of
9842 Eliminated all reduce/reduce conflicts in the iASL parser generation.
9844 with the addition of a %expected statement, the compiler generates from
9845 source with no warnings.
9847 Fixed a possible segment fault in the disassembler if the input filename
9848 does not contain a "dot" extension (Thomas Renninger).
9850 ----------------------------------------
9851 21 October 2005. Summary of changes for version 20051021:
9853 1) ACPI CA Core Subsystem:
9855 Implemented support for the EM64T and other x86-64 processors. This
9856 essentially entails recognizing that these processors support non-aligned
9857 memory transfers. Previously, all 64-bit processors were assumed to lack
9858 hardware support for non-aligned transfers.
9860 Completed conversion of the Resource Manager to nearly full table-driven
9861 operation. Specifically, the resource conversion code (convert AML to
9862 internal format and the reverse) and the debug code to dump internal
9863 resource descriptors are fully table-driven, reducing code and data size
9865 improving maintainability.
9867 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
9869 on 64-bit processors instead of a fixed 32-bit word. (With assistance
9871 Alexey Starikovskiy)
9873 Implemented support within the resource conversion code for the Type-
9874 Specific byte within the various ACPI 3.0 *WordSpace macros.
9876 Fixed some issues within the resource conversion code for the type-
9878 flags for both Memory and I/O address resource descriptors. For Memory,
9879 implemented support for the MTP and TTP flags. For I/O, split the TRS and
9880 TTP flags into two separate fields.
9882 Code and Data Size: The current and previous library sizes for the core
9883 subsystem are shown below. These are the code and data sizes for the
9884 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9886 values do not include any ACPI driver or OSPM code. The debug version of
9888 code includes the debug output trace mechanism and has a much larger code
9889 and data size. Note that these values will vary depending on the
9891 of the compiler and the compiler options used during generation.
9894 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9895 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9897 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9898 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9902 2) iASL Compiler/Disassembler:
9904 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
9906 corresponding ResourceSource string was not also present in a resource
9907 descriptor declaration. This restriction caused problems with existing
9908 AML/ASL code that includes the Index byte without the string. When such
9910 was disassembled, it could not be compiled without modification. Further,
9911 the modified code created a resource template with a different size than
9913 original, breaking code that used fixed offsets into the resource
9917 Removed a recent feature of the disassembler to ignore a lone
9919 byte. This byte is now emitted if present so that the exact AML can be
9920 reproduced when the disassembled code is recompiled.
9922 Improved comments and text alignment for the resource descriptor code
9923 emitted by the disassembler.
9925 Implemented disassembler support for the ACPI 3.0 AccessSize field within
9927 Register() resource descriptor.
9929 ----------------------------------------
9930 30 September 2005. Summary of changes for version 20050930:
9932 1) ACPI CA Core Subsystem:
9934 Completed a major overhaul of the Resource Manager code - specifically,
9935 optimizations in the area of the AML/internal resource conversion code.
9937 code has been optimized to simplify and eliminate duplicated code, CPU
9939 use has been decreased by optimizing function parameters and local
9940 variables, and naming conventions across the manager have been
9942 for clarity and ease of maintenance (this includes function, parameter,
9943 variable, and struct/typedef names.) The update may force changes in some
9944 driver code, depending on how resources are handled by the host OS.
9946 All Resource Manager dispatch and information tables have been moved to a
9947 single location for clarity and ease of maintenance. One new file was
9948 created, named "rsinfo.c".
9950 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
9951 guarantee that the argument is not evaluated twice, making them less
9953 to macro side-effects. However, since there exists the possibility of
9954 additional stack use if a particular compiler cannot optimize them (such
9956 in the debug generation case), the original macros are optionally
9958 Note that some invocations of the return_VALUE macro may now cause size
9959 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
9961 eliminate these. (From Randy Dunlap)
9963 Implemented a new mechanism to enable debug tracing for individual
9965 methods. A new external interface, AcpiDebugTrace, is provided to enable
9966 this mechanism. The intent is to allow the host OS to easily enable and
9967 disable tracing for problematic control methods. This interface can be
9968 easily exposed to a user or debugger interface if desired. See the file
9969 psxface.c for details.
9971 AcpiUtCallocate will now return a valid pointer if a length of zero is
9972 specified - a length of one is used and a warning is issued. This matches
9973 the behavior of AcpiUtAllocate.
9975 Code and Data Size: The current and previous library sizes for the core
9976 subsystem are shown below. These are the code and data sizes for the
9977 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9979 values do not include any ACPI driver or OSPM code. The debug version of
9981 code includes the debug output trace mechanism and has a much larger code
9982 and data size. Note that these values will vary depending on the
9984 of the compiler and the compiler options used during generation.
9987 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9988 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9990 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9991 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9994 2) iASL Compiler/Disassembler:
9996 A remark is issued if the effective compile-time length of a package or
9997 buffer is zero. Previously, this was a warning.
9999 ----------------------------------------
10000 16 September 2005. Summary of changes for version 20050916:
10002 1) ACPI CA Core Subsystem:
10004 Fixed a problem within the Resource Manager where support for the Generic
10005 Register descriptor was not fully implemented. This descriptor is now
10007 recognized, parsed, disassembled, and displayed.
10009 Completely restructured the Resource Manager code to utilize table-driven
10010 dispatch and lookup, eliminating many of the large switch() statements.
10012 reduces overall subsystem code size and code complexity. Affects the
10013 resource parsing and construction, disassembly, and debug dump output.
10015 Cleaned up and restructured the debug dump output for all resource
10016 descriptors. Improved readability of the output and reduced code size.
10018 Fixed a problem where changes to internal data structures caused the
10019 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
10021 Code and Data Size: The current and previous library sizes for the core
10022 subsystem are shown below. These are the code and data sizes for the
10023 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10025 values do not include any ACPI driver or OSPM code. The debug version of
10027 code includes the debug output trace mechanism and has a much larger code
10028 and data size. Note that these values will vary depending on the
10030 of the compiler and the compiler options used during generation.
10033 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10034 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10036 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10037 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10040 2) iASL Compiler/Disassembler:
10042 Updated the disassembler to automatically insert an EndDependentFn()
10044 into the ASL stream if this macro is missing in the original AML code,
10045 simplifying compilation of the resulting ASL module.
10047 Fixed a problem in the disassembler where a disassembled ResourceSource
10048 string (within a large resource descriptor) was not surrounded by quotes
10050 not followed by a comma, causing errors when the resulting ASL module was
10051 compiled. Also, escape sequences within a ResourceSource string are now
10052 handled correctly (especially "\\")
10054 ----------------------------------------
10055 02 September 2005. Summary of changes for version 20050902:
10057 1) ACPI CA Core Subsystem:
10059 Fixed a problem with the internal Owner ID allocation and deallocation
10060 mechanisms for control method execution and recursive method invocation.
10061 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
10062 messages seen on some systems. Recursive method invocation depth is
10063 currently limited to 255. (Alexey Starikovskiy)
10065 Completely eliminated all vestiges of support for the "module-level
10066 executable code" until this support is fully implemented and debugged.
10068 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
10069 some systems that invoke this support.
10071 Fixed a problem within the resource manager code where the transaction
10073 for a 64-bit address descriptor were handled incorrectly in the type-
10074 specific flag byte.
10076 Consolidated duplicate code within the address descriptor resource
10078 code, reducing overall subsystem code size.
10080 Fixed a fault when using the AML debugger "disassemble" command to
10081 disassemble individual control methods.
10083 Removed references to the "release_current" directory within the Unix
10086 Code and Data Size: The current and previous core subsystem library sizes
10087 are shown below. These are the code and data sizes for the acpica.lib
10088 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
10089 include any ACPI driver or OSPM code. The debug version of the code
10091 the debug output trace mechanism and has a much larger code and data
10093 Note that these values will vary depending on the efficiency of the
10095 and the compiler options used during generation.
10098 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10099 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10101 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10102 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10105 2) iASL Compiler/Disassembler:
10107 Implemented an error check for illegal duplicate values in the interrupt
10109 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
10112 Implemented error checking for the Irq() and IrqNoFlags() macros to
10114 too many values in the interrupt list (16 max) and invalid values in the
10115 list (range 0 - 15)
10117 The maximum length string literal within an ASL file is now restricted to
10118 200 characters as per the ACPI specification.
10120 Fixed a fault when using the -ln option (generate namespace listing).
10122 Implemented an error check to determine if a DescriptorName within a
10123 resource descriptor has already been used within the current scope.
10125 ----------------------------------------
10126 15 August 2005. Summary of changes for version 20050815:
10128 1) ACPI CA Core Subsystem:
10130 Implemented a full bytewise compare to determine if a table load request
10132 attempting to load a duplicate table. The compare is performed if the
10134 signatures and table lengths match. This will allow different tables with
10135 the same OEM Table ID and revision to be loaded - probably against the
10137 specification, but discovered in the field nonetheless.
10139 Added the changes.txt logfile to each of the zipped release packages.
10141 Code and Data Size: Current and previous core subsystem library sizes are
10142 shown below. These are the code and data sizes for the acpica.lib
10144 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10145 any ACPI driver or OSPM code. The debug version of the code includes the
10146 debug output trace mechanism and has a much larger code and data size.
10148 that these values will vary depending on the efficiency of the compiler
10150 the compiler options used during generation.
10153 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10154 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10156 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10157 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10160 2) iASL Compiler/Disassembler:
10162 Fixed a problem where incorrect AML code could be generated for Package
10163 objects if optimization is disabled (via the -oa switch).
10165 Fixed a problem with where incorrect AML code is generated for variable-
10166 length packages when the package length is not specified and the number
10168 initializer values is greater than 255.
10171 ----------------------------------------
10172 29 July 2005. Summary of changes for version 20050729:
10174 1) ACPI CA Core Subsystem:
10176 Implemented support to ignore an attempt to install/load a particular
10178 table more than once. Apparently there exists BIOS code that repeatedly
10179 attempts to load the same SSDT upon certain events. With assistance from
10180 Venkatesh Pallipadi.
10182 Restructured the main interface to the AML parser in order to correctly
10183 handle all exceptional conditions. This will prevent leakage of the
10185 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
10187 machines. With assistance from Alexey Starikovskiy.
10189 Support for "module level code" has been disabled in this version due to
10191 number of issues that have appeared on various machines. The support can
10193 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
10194 compilation. When the issues are fully resolved, the code will be enabled
10198 Modified the internal functions for debug print support to define the
10199 FunctionName parameter as a (const char *) for compatibility with
10201 built-in macros such as __FUNCTION__, etc.
10203 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
10205 Implemented support to display an object count summary for the AML
10207 commands Object and Methods.
10209 Code and Data Size: Current and previous core subsystem library sizes are
10210 shown below. These are the code and data sizes for the acpica.lib
10212 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10213 any ACPI driver or OSPM code. The debug version of the code includes the
10214 debug output trace mechanism and has a much larger code and data size.
10216 that these values will vary depending on the efficiency of the compiler
10218 the compiler options used during generation.
10221 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10222 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10224 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10225 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10228 2) iASL Compiler/Disassembler:
10230 Fixed a regression that appeared in the 20050708 version of the compiler
10231 where an error message was inadvertently emitted for invocations of the
10233 reserved control method.
10235 ----------------------------------------
10236 08 July 2005. Summary of changes for version 20050708:
10238 1) ACPI CA Core Subsystem:
10240 The use of the CPU stack in the debug version of the subsystem has been
10241 considerably reduced. Previously, a debug structure was declared in every
10242 function that used the debug macros. This structure has been removed in
10243 favor of declaring the individual elements as parameters to the debug
10244 functions. This reduces the cumulative stack use during nested execution
10246 ACPI function calls at the cost of a small increase in the code size of
10248 debug version of the subsystem. With assistance from Alexey Starikovskiy
10252 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
10253 headers to define a macro that will return the current function name at
10254 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
10256 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
10257 compiler-dependent header, the function name is saved on the CPU stack
10259 pointer per function.) This mechanism is used because apparently there
10260 exists no standard ANSI-C defined macro that that returns the function
10263 Redesigned and reimplemented the "Owner ID" mechanism used to track
10264 namespace objects created/deleted by ACPI tables and control method
10265 execution. A bitmap is now used to allocate and free the IDs, thus
10267 the wraparound problem present in the previous implementation. The size
10269 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
10272 Removed the UINT32_BIT and UINT16_BIT types that were used for the
10274 flag definitions within the headers for the predefined ACPI tables. These
10275 have been replaced by UINT8_BIT in order to increase the code portability
10277 the subsystem. If the use of UINT8 remains a problem, we may be forced to
10278 eliminate bitfields entirely because of a lack of portability.
10280 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
10282 is a frequently used function and this improvement increases the
10284 of the entire subsystem (Alexey Starikovskiy).
10286 Fixed several possible memory leaks and the inverse - premature object
10287 deletion (Alexey Starikovskiy).
10289 Code and Data Size: Current and previous core subsystem library sizes are
10290 shown below. These are the code and data sizes for the acpica.lib
10292 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10293 any ACPI driver or OSPM code. The debug version of the code includes the
10294 debug output trace mechanism and has a much larger code and data size.
10296 that these values will vary depending on the efficiency of the compiler
10298 the compiler options used during generation.
10301 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10302 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10304 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10305 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10307 ----------------------------------------
10308 24 June 2005. Summary of changes for version 20050624:
10310 1) ACPI CA Core Subsystem:
10312 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
10313 the host-defined cache object. This allows the OSL implementation to
10315 and type this object in any manner desired, simplifying the OSL
10316 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
10317 Linux, and should be defined in the OS-specific header file for other
10318 operating systems as required.
10320 Changed the interface to AcpiOsAcquireObject to directly return the
10321 requested object as the function return (instead of ACPI_STATUS.) This
10322 change was made for performance reasons, since this is the purpose of the
10323 interface in the first place. AcpiOsAcquireObject is now similar to the
10324 AcpiOsAllocate interface.
10326 Implemented a new AML debugger command named Businfo. This command
10328 information about all devices that have an associate _PRT object. The
10330 _HID, _UID, and _CID are displayed for these devices.
10332 Modified the initialization sequence in AcpiInitializeSubsystem to call
10334 OSL interface AcpiOslInitialize first, before any local initialization.
10336 change was required because the global initialization now calls OSL
10339 Enhanced the Dump command to display the entire contents of Package
10341 (including all sub-objects and their values.)
10343 Restructured the code base to split some files because of size and/or
10344 because the code logically belonged in a separate file. New files are
10346 below. All makefiles and project files included in the ACPI CA release
10349 utilities/utcache.c /* Local cache interfaces */
10350 utilities/utmutex.c /* Local mutex support */
10351 utilities/utstate.c /* State object support */
10352 interpreter/parser/psloop.c /* Main AML parse loop */
10354 Code and Data Size: Current and previous core subsystem library sizes are
10355 shown below. These are the code and data sizes for the acpica.lib
10357 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10358 any ACPI driver or OSPM code. The debug version of the code includes the
10359 debug output trace mechanism and has a much larger code and data size.
10361 that these values will vary depending on the efficiency of the compiler
10363 the compiler options used during generation.
10366 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10367 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10369 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10370 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10373 2) iASL Compiler/Disassembler:
10375 Fixed a regression introduced in version 20050513 where the use of a
10377 object within a Case() statement caused a compile time exception. The
10378 original behavior has been restored (a Match() operator is emitted.)
10380 ----------------------------------------
10381 17 June 2005. Summary of changes for version 20050617:
10383 1) ACPI CA Core Subsystem:
10385 Moved the object cache operations into the OS interface layer (OSL) to
10387 the host OS to handle these operations if desired (for example, the Linux
10388 OSL will invoke the slab allocator). This support is optional; the
10390 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
10392 code in the ACPI CA core. The new OSL interfaces are shown below. See
10393 utalloc.c for an example implementation, and acpiosxf.h for the exact
10394 interface definitions. With assistance from Alexey Starikovskiy.
10398 AcpiOsAcquireObject
10399 AcpiOsReleaseObject
10401 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
10403 and restore a flags parameter. This fits better with many OS lock models.
10404 Note: the current execution state (interrupt handler or not) is no longer
10405 passed to these interfaces. If necessary, the OSL must determine this
10407 by itself, a simple and fast operation. With assistance from Alexey
10410 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
10411 present if the revision of the RSDP was 2 or greater. According to the
10413 specification, the XSDT is optional in all cases, and the table manager
10414 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
10415 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
10419 Fixed an interpreter problem with the Mid() operator in the case of an
10421 string where the resulting output string is of zero length. It now
10423 returns a valid, null terminated string object instead of a string object
10424 with a null pointer.
10426 Fixed a problem with the control method argument handling to allow a
10428 to an Arg object that already contains an object of type Device. The
10430 object is now correctly overwritten. Previously, an error was returned.
10433 Enhanced the debugger Find command to emit object values in addition to
10435 found object pathnames. The output format is the same as the dump
10439 Enhanced the debugger Set command. It now has the ability to set the
10441 of any Named integer object in the namespace (Previously, only method
10443 and args could be set.)
10445 Code and Data Size: Current and previous core subsystem library sizes are
10446 shown below. These are the code and data sizes for the acpica.lib
10448 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10449 any ACPI driver or OSPM code. The debug version of the code includes the
10450 debug output trace mechanism and has a much larger code and data size.
10452 that these values will vary depending on the efficiency of the compiler
10454 the compiler options used during generation.
10457 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10458 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10460 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10461 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10464 2) iASL Compiler/Disassembler:
10466 Fixed a regression in the disassembler where if/else/while constructs
10468 output incorrectly. This problem was introduced in the previous release
10469 (20050526). This problem also affected the single-step disassembly in the
10472 Fixed a problem where compiling the reserved _OSI method would randomly
10474 rarely) produce compile errors.
10476 Enhanced the disassembler to emit compilable code in the face of
10478 AML resource descriptors. If the optional ResourceSourceIndex is present,
10479 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
10480 disassembly. Otherwise, the resulting code cannot be compiled without
10483 ----------------------------------------
10484 26 May 2005. Summary of changes for version 20050526:
10486 1) ACPI CA Core Subsystem:
10488 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
10489 the module level (not within a control method.) These opcodes are
10491 exactly once at the time the table is loaded. This type of code was legal
10493 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
10495 order to provide backwards compatibility with earlier BIOS
10497 This eliminates the "Encountered executable code at module level" warning
10498 that was previously generated upon detection of such code.
10500 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
10501 inadvertently be generated during the lookup of namespace objects in the
10502 second pass parse of ACPI tables and control methods. It appears that
10504 problem could occur during the resolution of forward references to
10508 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
10509 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
10510 allows the deadlock detection debug code to be compiled out in the normal
10511 case, improving mutex performance (and overall subsystem performance)
10514 Implemented a handful of miscellaneous fixes for possible memory leaks on
10515 error conditions and error handling control paths. These fixes were
10516 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
10518 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
10520 to prevent a fault in this error case.
10522 Code and Data Size: Current and previous core subsystem library sizes are
10523 shown below. These are the code and data sizes for the acpica.lib
10525 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10526 any ACPI driver or OSPM code. The debug version of the code includes the
10527 debug output trace mechanism and has a much larger code and data size.
10529 that these values will vary depending on the efficiency of the compiler
10531 the compiler options used during generation.
10534 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10535 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10537 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10538 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10541 2) iASL Compiler/Disassembler:
10543 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
10544 the module level (not within a control method.) These operators will be
10545 executed once at the time the table is loaded. This type of code was
10547 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
10548 compiler in order to provide backwards compatibility with earlier BIOS
10552 The ACPI integer width (specified via the table revision ID or the -r
10553 override, 32 or 64 bits) is now used internally during compile-time
10555 folding to ensure that constants are truncated to 32 bits if necessary.
10556 Previously, the revision ID value was only emitted in the AML table
10559 An error message is now generated for the Mutex and Method operators if
10561 SyncLevel parameter is outside the legal range of 0 through 15.
10563 Fixed a problem with the Method operator ParameterTypes list handling
10565 3.0). Previously, more than 2 types or 2 arguments generated a syntax
10567 The actual underlying implementation of method argument typechecking is
10568 still under development, however.
10570 ----------------------------------------
10571 13 May 2005. Summary of changes for version 20050513:
10573 1) ACPI CA Core Subsystem:
10575 Implemented support for PCI Express root bridges -- added support for
10577 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
10579 The interpreter now automatically truncates incoming 64-bit constants to
10581 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
10583 also affects the iASL compiler constant folding. (Note: as per below, the
10584 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
10586 Fixed a problem where string and buffer objects with "static" pointers
10587 (pointers to initialization data within an ACPI table) were not handled
10588 consistently. The internal object copy operation now always copies the
10590 to a newly allocated buffer, regardless of whether the source object is
10593 Fixed a problem with the FromBCD operator where an implicit result
10594 conversion was improperly performed while storing the result to the
10596 operand. Since this is an "explicit conversion" operator, the implicit
10597 conversion should never be performed on the output.
10599 Fixed a problem with the CopyObject operator where a copy to an existing
10600 named object did not always completely overwrite the existing object
10602 at name. Specifically, a buffer-to-buffer copy did not delete the
10606 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
10608 structs for consistency.
10610 Code and Data Size: Current and previous core subsystem library sizes are
10611 shown below. These are the code and data sizes for the acpica.lib
10613 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10614 any ACPI driver or OSPM code. The debug version of the code includes the
10615 debug output trace mechanism and has a much larger code and data size.
10617 that these values will vary depending on the efficiency of the compiler
10619 the compiler options used during generation.
10622 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10623 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10624 Current Release: (Same sizes)
10625 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10626 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10629 2) iASL Compiler/Disassembler:
10631 The compiler now emits a warning if an attempt is made to generate a 64-
10633 integer constant from within a 32-bit ACPI table (Revision < 2). The
10635 is truncated to 32 bits.
10637 Fixed a problem with large package objects: if the static length of the
10638 package is greater than 255, the "variable length package" opcode is
10639 emitted. Previously, this caused an error. This requires an update to the
10640 ACPI spec, since it currently (incorrectly) states that packages larger
10642 255 elements are not allowed.
10644 The disassembler now correctly handles variable length packages and
10646 larger than 255 elements.
10648 ----------------------------------------
10649 08 April 2005. Summary of changes for version 20050408:
10651 1) ACPI CA Core Subsystem:
10653 Fixed three cases in the interpreter where an "index" argument to an ASL
10654 function was still (internally) 32 bits instead of the required 64 bits.
10655 This was the Index argument to the Index, Mid, and Match operators.
10657 The "strupr" function is now permanently local (AcpiUtStrupr), since this
10659 not a POSIX-defined function and not present in most kernel-level C
10660 libraries. All references to the C library strupr function have been
10664 Completed the deployment of static functions/prototypes. All prototypes
10666 the static attribute have been moved from the headers to the owning C
10669 Implemented an extract option (-e) for the AcpiBin utility (AML binary
10670 utility). This option allows the utility to extract individual ACPI
10672 from the output of AcpiDmp. It provides the same functionality of the
10673 acpixtract.pl perl script without the worry of setting the correct perl
10674 options. AcpiBin runs on Windows and has not yet been generated/validated
10676 the Linux/Unix environment (but should be soon).
10678 Updated and fixed the table dump option for AcpiBin (-d). This option
10679 converts a single ACPI table to a hex/ascii file, similar to the output
10683 Code and Data Size: Current and previous core subsystem library sizes are
10684 shown below. These are the code and data sizes for the acpica.lib
10686 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10687 any ACPI driver or OSPM code. The debug version of the code includes the
10688 debug output trace mechanism and has a much larger code and data size.
10690 that these values will vary depending on the efficiency of the compiler
10692 the compiler options used during generation.
10695 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
10696 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
10698 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10699 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10702 2) iASL Compiler/Disassembler:
10704 Disassembler fix: Added a check to ensure that the table length found in
10706 ACPI table header within the input file is not longer than the actual
10708 file size. This indicates some kind of file or table corruption.
10710 ----------------------------------------
10711 29 March 2005. Summary of changes for version 20050329:
10713 1) ACPI CA Core Subsystem:
10715 An error is now generated if an attempt is made to create a Buffer Field
10717 length zero (A CreateField with a length operand of zero.)
10719 The interpreter now issues a warning whenever executable code at the
10721 level is detected during ACPI table load. This will give some idea of the
10722 prevalence of this type of code.
10724 Implemented support for references to named objects (other than control
10725 methods) within package objects.
10727 Enhanced package object output for the debug object. Package objects are
10729 completely dumped, showing all elements.
10731 Enhanced miscellaneous object output for the debug object. Any object can
10732 now be written to the debug object (for example, a device object can be
10733 written, and the type of the object will be displayed.)
10735 The "static" qualifier has been added to all local functions across both
10737 core subsystem and the iASL compiler.
10739 The number of "long" lines (> 80 chars) within the source has been
10740 significantly reduced, by about 1/3.
10742 Cleaned up all header files to ensure that all CA/iASL functions are
10743 prototyped (even static functions) and the formatting is consistent.
10745 Two new header files have been added, acopcode.h and acnames.h.
10747 Removed several obsolete functions that were no longer used.
10749 Code and Data Size: Current and previous core subsystem library sizes are
10750 shown below. These are the code and data sizes for the acpica.lib
10752 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10753 any ACPI driver or OSPM code. The debug version of the code includes the
10754 debug output trace mechanism and has a much larger code and data size.
10756 that these values will vary depending on the efficiency of the compiler
10758 the compiler options used during generation.
10761 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10762 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10764 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
10765 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
10769 2) iASL Compiler/Disassembler:
10771 Fixed a problem with the resource descriptor generation/support. For the
10772 ResourceSourceIndex and the ResourceSource fields, both must be present,
10774 both must be not present - can't have one without the other.
10776 The compiler now returns non-zero from the main procedure if any errors
10778 occurred during the compilation.
10781 ----------------------------------------
10782 09 March 2005. Summary of changes for version 20050309:
10784 1) ACPI CA Core Subsystem:
10786 The string-to-buffer implicit conversion code has been modified again
10788 a change to the ACPI specification. In order to match the behavior of
10790 other major ACPI implementation, the target buffer is no longer truncated
10792 the source string is smaller than an existing target buffer. This change
10793 requires an update to the ACPI spec, and should eliminate the recent
10794 AE_AML_BUFFER_LIMIT issues.
10796 The "implicit return" support was rewritten to a new algorithm that
10798 the general case. Rather than attempt to determine when a method is about
10800 exit, the result of every ASL operator is saved momentarily until the
10802 next ASL operator is executed. Therefore, no matter how the method exits,
10803 there will always be a saved implicit return value. This feature is only
10804 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
10806 AE_AML_NO_RETURN_VALUE errors when enabled.
10808 Implemented implicit conversion support for the predicate (operand) of
10810 If, Else, and While operators. String and Buffer arguments are
10812 converted to Integers.
10814 Changed the string-to-integer conversion behavior to match the new ACPI
10815 errata: "If no integer object exists, a new integer is created. The ASCII
10816 string is interpreted as a hexadecimal constant. Each string character is
10817 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
10818 with the first character as the most significant digit, and ending with
10820 first non-hexadecimal character or end-of-string." This means that the
10822 non-hex character terminates the conversion and this is the code that was
10825 Fixed a problem where the ObjectType operator would fail (fault) when
10827 on an Index of a Package which pointed to a null package element. The
10828 operator now properly returns zero (Uninitialized) in this case.
10830 Fixed a problem where the While operator used excessive memory by not
10831 properly popping the result stack during execution. There was no memory
10833 after execution, however. (Code provided by Valery Podrezov.)
10835 Fixed a problem where references to control methods within Package
10837 caused the method to be invoked, instead of producing a reference object
10838 pointing to the method.
10840 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
10842 improve performance and reduce code size. (Code provided by Alexey
10845 Code and Data Size: Current and previous core subsystem library sizes are
10846 shown below. These are the code and data sizes for the acpica.lib
10848 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10849 any ACPI driver or OSPM code. The debug version of the code includes the
10850 debug output trace mechanism and has a much larger code and data size.
10852 that these values will vary depending on the efficiency of the compiler
10854 the compiler options used during generation.
10857 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10858 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10860 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10861 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10864 2) iASL Compiler/Disassembler:
10866 Fixed a problem with the Return operator with no arguments. Since the AML
10867 grammar for the byte encoding requires an operand for the Return opcode,
10869 compiler now emits a Return(Zero) for this case. An ACPI specification
10870 update has been written for this case.
10872 For tables other than the DSDT, namepath optimization is automatically
10873 disabled. This is because SSDTs can be loaded anywhere in the namespace,
10875 compiler has no knowledge of where, and thus cannot optimize namepaths.
10877 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
10878 inadvertently omitted from the ACPI specification, and will require an
10879 update to the spec.
10881 The source file scan for ASCII characters is now optional (-a). This
10883 was made because some vendors place non-ascii characters within comments.
10884 However, the scan is simply a brute-force byte compare to ensure all
10885 characters in the file are in the range 0x00 to 0x7F.
10887 Fixed a problem with the CondRefOf operator where the compiler was
10888 inappropriately checking for the existence of the target. Since the point
10890 the operator is to check for the existence of the target at run-time, the
10891 compiler no longer checks for the target existence.
10893 Fixed a problem where errors generated from the internal AML interpreter
10894 during constant folding were not handled properly, causing a fault.
10896 Fixed a problem with overly aggressive range checking for the Stall
10897 operator. The valid range (max 255) is now only checked if the operand is
10899 type Integer. All other operand types cannot be statically checked.
10901 Fixed a problem where control method references within the RefOf,
10903 and ObjectType operators were not treated properly. They are now treated
10905 actual references, not method invocations.
10907 Fixed and enhanced the "list namespace" option (-ln). This option was
10909 a number of releases ago.
10911 Improved error handling for the Field, IndexField, and BankField
10913 The compiler now cleanly reports and recovers from errors in the field
10914 component (FieldUnit) list.
10916 Fixed a disassembler problem where the optional ResourceDescriptor fields
10917 TRS and TTP were not always handled correctly.
10919 Disassembler - Comments in output now use "//" instead of "/*"
10921 ----------------------------------------
10922 28 February 2005. Summary of changes for version 20050228:
10924 1) ACPI CA Core Subsystem:
10926 Fixed a problem where the result of an Index() operator (an object
10927 reference) must increment the reference count on the target object for
10929 life of the object reference.
10931 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
10932 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
10934 resource descriptors.
10936 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
10937 Space Descriptor" string, indicating interpreter support for the
10941 Implemented header support for the new ACPI 3.0 FADT flag bits.
10943 Implemented header support for the new ACPI 3.0 PCI Express bits for the
10945 status/enable registers.
10947 Updated header support for the MADT processor local Apic struct and MADT
10948 platform interrupt source struct for new ACPI 3.0 fields.
10950 Implemented header support for the SRAT and SLIT ACPI tables.
10952 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
10956 Code and Data Size: Current and previous core subsystem library sizes are
10957 shown below. These are the code and data sizes for the acpica.lib
10959 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10960 any ACPI driver or OSPM code. The debug version of the code includes the
10961 debug output trace mechanism and has a much larger code and data size.
10963 that these values will vary depending on the efficiency of the compiler
10965 the compiler options used during generation.
10968 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10969 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10971 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10972 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10975 2) iASL Compiler/Disassembler:
10977 Fixed a problem with the internal 64-bit String-to-integer conversion
10979 strings less than two characters long.
10981 Fixed a problem with constant folding where the result of the Index()
10982 operator can not be considered a constant. This means that Index() cannot
10984 a type3 opcode and this will require an update to the ACPI specification.
10986 Disassembler: Implemented support for the TTP, MTP, and TRS resource
10987 descriptor fields. These fields were inadvertently ignored and not output
10989 the disassembly of the resource descriptor.
10992 ----------------------------------------
10993 11 February 2005. Summary of changes for version 20050211:
10995 1) ACPI CA Core Subsystem:
10997 Implemented ACPI 3.0 support for implicit conversion within the Match()
10998 operator. MatchObjects can now be of type integer, buffer, or string
11000 of just type integer. Package elements are implicitly converted to the
11002 of the MatchObject. This change aligns the behavior of Match() with the
11003 behavior of the other logical operators (LLess(), etc.) It also requires
11005 errata change to the ACPI specification as this support was intended for
11006 ACPI 3.0, but was inadvertently omitted.
11008 Fixed a problem with the internal implicit "to buffer" conversion.
11010 that are converted to buffers will cause buffer truncation if the string
11012 smaller than the target buffer. Integers that are converted to buffers
11014 not cause buffer truncation, only zero extension (both as per the ACPI
11015 spec.) The problem was introduced when code was added to truncate the
11016 buffer, but this should not be performed in all cases, only the string
11019 Fixed a problem with the Buffer and Package operators where the
11021 would get confused if two such operators were used as operands to an ASL
11022 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
11023 stack was not being popped after the execution of these operators,
11025 in an AE_NO_RETURN_VALUE exception.
11027 Fixed a problem with constructs of the form Store(Index(...),...). The
11028 reference object returned from Index was inadvertently resolved to an
11030 value. This problem was introduced in version 20050114 when the behavior
11032 Store() was modified to restrict the object types that can be used as the
11033 source operand (to match the ACPI specification.)
11035 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
11037 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
11039 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
11041 Code and Data Size: Current and previous core subsystem library sizes are
11042 shown below. These are the code and data sizes for the acpica.lib
11044 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11045 any ACPI driver or OSPM code. The debug version of the code includes the
11046 debug output trace mechanism and has a much larger code and data size.
11048 that these values will vary depending on the efficiency of the compiler
11050 the compiler options used during generation.
11053 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11054 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11056 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11057 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11060 2) iASL Compiler/Disassembler:
11062 Fixed a code generation problem in the constant folding optimization code
11063 where incorrect code was generated if a constant was reduced to a buffer
11064 object (i.e., a reduced type 5 opcode.)
11066 Fixed a typechecking problem for the ToBuffer operator. Caused by an
11067 incorrect return type in the internal opcode information table.
11069 ----------------------------------------
11070 25 January 2005. Summary of changes for version 20050125:
11072 1) ACPI CA Core Subsystem:
11074 Fixed a recently introduced problem with the Global Lock where the
11075 underlying semaphore was not created. This problem was introduced in
11076 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
11077 Acquire() operation on _GL.
11079 The local object cache is now optional, and is disabled by default. Both
11080 AcpiExec and the iASL compiler enable the cache because they run in user
11081 mode and this enhances their performance. #define
11082 ACPI_ENABLE_OBJECT_CACHE
11083 to enable the local cache.
11085 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
11087 optional "implicit return" support where an error was returned if no
11089 object was expected, but one was implicitly returned. AE_OK is now
11091 in this case and the implicitly returned object is deleted.
11092 AcpiUtEvaluateObject is only occasionally used, and only to execute
11094 methods such as _STA and _INI where the return type is known up front.
11096 Fixed a few issues with the internal convert-to-integer code. It now
11098 an error if an attempt is made to convert a null string, a string of only
11099 blanks/tabs, or a zero-length buffer. This affects both implicit
11101 and explicit conversion via the ToInteger() operator.
11103 The internal debug code in AcpiUtAcquireMutex has been commented out. It
11105 not needed for normal operation and should increase the performance of
11107 entire subsystem. The code remains in case it is needed for debug
11111 The AcpiExec source and makefile are included in the Unix/Linux package
11115 Code and Data Size: Current and previous core subsystem library sizes are
11116 shown below. These are the code and data sizes for the acpica.lib
11118 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11119 any ACPI driver or OSPM code. The debug version of the code includes the
11120 debug output trace mechanism and has a much larger code and data size.
11122 that these values will vary depending on the efficiency of the compiler
11124 the compiler options used during generation.
11127 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11128 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11130 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11131 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11133 2) iASL Compiler/Disassembler:
11135 Switch/Case support: A warning is now issued if the type of the Switch
11137 cannot be determined at compile time. For example, Switch(Arg0) will
11138 generate the warning, and the type is assumed to be an integer. As per
11140 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
11144 Switch/Case support: Implemented support for buffer and string objects as
11145 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
11146 buffers and strings.
11148 Switch/Case support: The emitted code for the LEqual() comparisons now
11150 the switch value as the first operand, not the second. The case value is
11152 the second operand, and this allows the case value to be implicitly
11153 converted to the type of the switch value, not the other way around.
11155 Switch/Case support: Temporary variables are now emitted immediately
11157 the control method, not at the global level. This means that there are
11159 36 temps available per-method, not 36 temps per-module as was the case
11161 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
11163 ----------------------------------------
11164 14 January 2005. Summary of changes for version 20050114:
11166 Added 2005 copyright to all module headers. This affects every module in
11167 the core subsystem, iASL compiler, and the utilities.
11169 1) ACPI CA Core Subsystem:
11171 Fixed an issue with the String-to-Buffer conversion code where the string
11172 null terminator was not included in the buffer after conversion, but
11174 is existing ASL that assumes the string null terminator is included. This
11176 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
11177 introduced in the previous version when the code was updated to correctly
11178 set the converted buffer size as per the ACPI specification. The ACPI
11180 is ambiguous and will be updated to specify that the null terminator must
11182 included in the converted buffer. This also affects the ToBuffer() ASL
11185 Fixed a problem with the Mid() ASL/AML operator where it did not work
11186 correctly on Buffer objects. Newly created sub-buffers were not being
11191 Fixed a problem in AcpiTbFindTable where incorrect string compares were
11192 performed on the OemId and OemTableId table header fields. These fields
11194 not null terminated, so strncmp is now used instead of strcmp.
11196 Implemented a restriction on the Store() ASL/AML operator to align the
11197 behavior with the ACPI specification. Previously, any object could be
11199 as the source operand. Now, the only objects that may be used are
11201 Buffers, Strings, Packages, Object References, and DDB Handles. If
11202 necessary, the original behavior can be restored by enabling the
11203 EnableInterpreterSlack flag.
11205 Enhanced the optional "implicit return" support to allow an implicit
11207 value from methods that are invoked externally via the AcpiEvaluateObject
11208 interface. This enables implicit returns from the _STA and _INI methods,
11211 Changed the Revision() ASL/AML operator to return the current version of
11213 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
11215 the supported ACPI version (This is the function of the _REV method).
11217 Updated the _REV predefined method to return the currently supported
11221 Implemented batch mode option for the AcpiExec utility (-b).
11223 Code and Data Size: Current and previous core subsystem library sizes are
11224 shown below. These are the code and data sizes for the acpica.lib
11226 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11227 any ACPI driver or OSPM code. The debug version of the code includes the
11228 debug output trace mechanism and has a much larger code and data size.
11230 that these values will vary depending on the efficiency of the compiler
11232 the compiler options used during generation.
11235 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11236 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11238 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11239 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11241 ----------------------------------------
11242 10 December 2004. Summary of changes for version 20041210:
11244 ACPI 3.0 support is nearing completion in both the iASL compiler and the
11245 ACPI CA core subsystem.
11247 1) ACPI CA Core Subsystem:
11249 Fixed a problem in the ToDecimalString operator where the resulting
11251 length was incorrectly calculated. The length is now calculated exactly,
11252 eliminating incorrect AE_STRING_LIMIT exceptions.
11254 Fixed a problem in the ToHexString operator to allow a maximum 200
11256 string to be produced.
11258 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
11260 routine where the length of the resulting buffer was not truncated to the
11261 new size (if the target buffer already existed).
11263 Code and Data Size: Current and previous core subsystem library sizes are
11264 shown below. These are the code and data sizes for the acpica.lib
11266 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11267 any ACPI driver or OSPM code. The debug version of the code includes the
11268 debug output trace mechanism and has a much larger code and data size.
11270 that these values will vary depending on the efficiency of the compiler
11272 the compiler options used during generation.
11275 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11276 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11278 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11279 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11282 2) iASL Compiler/Disassembler:
11284 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
11285 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
11286 Includes support in the disassembler.
11288 Implemented support for the new (ACPI 3.0) parameter to the Register
11292 Fixed a problem where the _HE resource name for the Interrupt macro was
11293 referencing bit 0 instead of bit 1.
11295 Implemented check for maximum 255 interrupts in the Interrupt macro.
11297 Fixed a problem with the predefined resource descriptor names where
11298 incorrect AML code was generated if the offset within the resource buffer
11299 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
11300 but did not update the surrounding package lengths.
11302 Changes to the Dma macro: All channels within the channel list must be
11304 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
11305 optional (default is BusMaster).
11307 Implemented check for maximum 7 data bytes for the VendorShort macro.
11309 The ReadWrite parameter is now optional for the Memory32 and similar
11312 ----------------------------------------
11313 03 December 2004. Summary of changes for version 20041203:
11315 1) ACPI CA Core Subsystem:
11317 The low-level field insertion/extraction code (exfldio) has been
11319 rewritten to eliminate unnecessary complexity, bugs, and boundary
11322 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
11324 operators where the input operand could be inadvertently deleted if no
11325 conversion was necessary (e.g., if the input to ToInteger was an Integer
11328 Fixed a problem with the ToDecimalString and ToHexString where an
11330 exception code was returned if the resulting string would be > 200 chars.
11331 AE_STRING_LIMIT is now returned.
11333 Fixed a problem with the Concatenate operator where AE_OK was always
11334 returned, even if the operation failed.
11336 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
11337 semaphores to be allocated.
11339 Code and Data Size: Current and previous core subsystem library sizes are
11340 shown below. These are the code and data sizes for the acpica.lib
11342 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11343 any ACPI driver or OSPM code. The debug version of the code includes the
11344 debug output trace mechanism and has a much larger code and data size.
11346 that these values will vary depending on the efficiency of the compiler
11348 the compiler options used during generation.
11351 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11352 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11354 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11355 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11358 2) iASL Compiler/Disassembler:
11360 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
11361 recently introduced in 20041119.
11363 Fixed a problem with the ToUUID macro where the upper nybble of each
11365 byte was inadvertently set to zero.
11367 ----------------------------------------
11368 19 November 2004. Summary of changes for version 20041119:
11370 1) ACPI CA Core Subsystem:
11372 Fixed a problem in the internal ConvertToInteger routine where new
11374 were not truncated to 32 bits for 32-bit ACPI tables. This routine
11376 buffers and strings to integers.
11378 Implemented support to store a value to an Index() on a String object.
11380 is an ACPI 2.0 feature that had not yet been implemented.
11382 Implemented new behavior for storing objects to individual package
11384 (via the Index() operator). The previous behavior was to invoke the
11386 conversion rules if an object was already present at the index. The new
11387 behavior is to simply delete any existing object and directly store the
11389 object. Although the ACPI specification seems unclear on this subject,
11391 ACPI implementations behave in this manner. (This is the root of the
11392 AE_BAD_HEX_CONSTANT issue.)
11394 Modified the RSDP memory scan mechanism to support the extended checksum
11396 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
11397 RSDP signature is found with a valid checksum.
11399 Code and Data Size: Current and previous core subsystem library sizes are
11400 shown below. These are the code and data sizes for the acpica.lib
11402 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11403 any ACPI driver or OSPM code. The debug version of the code includes the
11404 debug output trace mechanism and has a much larger code and data size.
11406 that these values will vary depending on the efficiency of the compiler
11408 the compiler options used during generation.
11411 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11412 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11414 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11415 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11418 2) iASL Compiler/Disassembler:
11420 Fixed a missing semicolon in the aslcompiler.y file.
11422 ----------------------------------------
11423 05 November 2004. Summary of changes for version 20041105:
11425 1) ACPI CA Core Subsystem:
11427 Implemented support for FADT revision 2. This was an interim table
11429 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
11431 Implemented optional support to allow uninitialized LocalX and ArgX
11432 variables in a control method. The variables are initialized to an
11434 object with a value of zero. This support is enabled by setting the
11435 AcpiGbl_EnableInterpreterSlack flag to TRUE.
11437 Implemented support for Integer objects for the SizeOf operator. Either
11439 or 8 is returned, depending on the current integer size (32-bit or 64-
11441 depending on the parent table revision).
11443 Fixed a problem in the implementation of the SizeOf and ObjectType
11445 where the operand was resolved to a value too early, causing incorrect
11446 return values for some objects.
11448 Fixed some possible memory leaks during exceptional conditions.
11450 Code and Data Size: Current and previous core subsystem library sizes are
11451 shown below. These are the code and data sizes for the acpica.lib
11453 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11454 any ACPI driver or OSPM code. The debug version of the code includes the
11455 debug output trace mechanism and has a much larger code and data size.
11457 that these values will vary depending on the efficiency of the compiler
11459 the compiler options used during generation.
11462 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11463 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11465 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11466 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11469 2) iASL Compiler/Disassembler:
11471 Implemented support for all ACPI 3.0 reserved names and methods.
11473 Implemented all ACPI 3.0 grammar elements in the front-end, including
11474 support for semicolons.
11476 Implemented the ACPI 3.0 Function() and ToUUID() macros
11478 Fixed a problem in the disassembler where a Scope() operator would not be
11479 emitted properly if the target of the scope was in another table.
11481 ----------------------------------------
11482 15 October 2004. Summary of changes for version 20041015:
11484 Note: ACPI CA is currently undergoing an in-depth and complete formal
11485 evaluation to test/verify the following areas. Other suggestions are
11486 welcome. This will result in an increase in the frequency of releases and
11487 the number of bug fixes in the next few months.
11488 - Functional tests for all ASL/AML operators
11489 - All implicit/explicit type conversions
11490 - Bit fields and operation regions
11491 - 64-bit math support and 32-bit-only "truncated" math support
11492 - Exceptional conditions, both compiler and interpreter
11493 - Dynamic object deletion and memory leaks
11494 - ACPI 3.0 support when implemented
11495 - External interfaces to the ACPI subsystem
11498 1) ACPI CA Core Subsystem:
11500 Fixed two alignment issues on 64-bit platforms - within debug statements
11502 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
11504 field within the non-aligned ACPI generic address structure.
11506 Fixed a problem in the Increment and Decrement operators where incorrect
11507 operand resolution could result in the inadvertent modification of the
11508 original integer when the integer is passed into another method as an
11509 argument and the arg is then incremented/decremented.
11511 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
11513 BCD number were truncated during conversion.
11515 Fixed a problem in the ToDecimal operator where the length of the
11517 string could be set incorrectly too long if the input operand was a
11521 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
11523 within a buffer would prematurely terminate a compare between buffer
11526 Added a check for string overflow (>200 characters as per the ACPI
11527 specification) during the Concatenate operator with two string operands.
11529 Code and Data Size: Current and previous core subsystem library sizes are
11530 shown below. These are the code and data sizes for the acpica.lib
11532 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11533 any ACPI driver or OSPM code. The debug version of the code includes the
11534 debug output trace mechanism and has a much larger code and data size.
11536 that these values will vary depending on the efficiency of the compiler
11538 the compiler options used during generation.
11541 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11542 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11544 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11545 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11549 2) iASL Compiler/Disassembler:
11551 Allow the use of the ObjectType operator on uninitialized Locals and Args
11552 (returns 0 as per the ACPI specification).
11554 Fixed a problem where the compiler would fault if there was a syntax
11556 in the FieldName of all of the various CreateXXXField operators.
11558 Disallow the use of lower case letters within the EISAID macro, as per
11560 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
11562 U is an uppercase letter and N is a hex digit.
11565 ----------------------------------------
11566 06 October 2004. Summary of changes for version 20041006:
11568 1) ACPI CA Core Subsystem:
11570 Implemented support for the ACPI 3.0 Timer operator. This ASL function
11571 implements a 64-bit timer with 100 nanosecond granularity.
11573 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
11574 implement the ACPI 3.0 Timer operator. This allows the host OS to
11576 the timer with the best clock available. Also, it keeps the core
11578 out of the clock handling business, since the host OS (usually) performs
11581 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
11582 functions use a 64-bit address which is part of the packed ACPI Generic
11583 Address Structure. Since the structure is non-aligned, the alignment
11585 are now used to extract the address to a local variable before use.
11587 Fixed a problem where the ToInteger operator assumed all input strings
11589 hexadecimal. The operator now handles both decimal strings and hex
11591 (prefixed with "0x").
11593 Fixed a problem where the string length in the string object created as a
11594 result of the internal ConvertToString procedure could be incorrect. This
11595 potentially affected all implicit conversions and also the
11597 and ToHexString operators.
11599 Fixed two problems in the ToString operator. If the length parameter was
11600 zero, an incorrect string object was created and the value of the input
11601 length parameter was inadvertently changed from zero to Ones.
11603 Fixed a problem where the optional ResourceSource string in the
11605 resource macro was ignored.
11607 Simplified the interfaces to the internal division functions, reducing
11609 size and complexity.
11611 Code and Data Size: Current and previous core subsystem library sizes are
11612 shown below. These are the code and data sizes for the acpica.lib
11614 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11615 any ACPI driver or OSPM code. The debug version of the code includes the
11616 debug output trace mechanism and has a much larger code and data size.
11618 that these values will vary depending on the efficiency of the compiler
11620 the compiler options used during generation.
11623 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11624 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11626 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11627 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11630 2) iASL Compiler/Disassembler:
11632 Implemented support for the ACPI 3.0 Timer operator.
11634 Fixed a problem where the Default() operator was inadvertently ignored in
11636 Switch/Case block. This was a problem in the translation of the Switch
11637 statement to If...Else pairs.
11639 Added support to allow a standalone Return operator, with no parentheses
11643 Fixed a problem with code generation for the ElseIf operator where the
11644 translated Else...If parse tree was improperly constructed leading to the
11647 ----------------------------------------
11648 22 September 2004. Summary of changes for version 20040922:
11650 1) ACPI CA Core Subsystem:
11652 Fixed a problem with the implementation of the LNot() operator where
11654 was not returned for the TRUE case. Changed the code to return Ones
11656 of (!Arg) which was usually 1. This change affects iASL constant folding
11658 this operator also.
11660 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
11662 initialized properly -- Now zero the entire buffer in this case where the
11663 buffer already exists.
11665 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
11666 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
11667 related code considerably. This will require changes/updates to all OS
11668 interface layers (OSLs.)
11670 Implemented a new external interface, AcpiInstallExceptionHandler, to
11672 a system exception handler to be installed. This handler is invoked upon
11674 run-time exception that occurs during control method execution.
11676 Added support for the DSDT in AcpiTbFindTable. This allows the
11677 DataTableRegion() operator to access the local copy of the DSDT.
11679 Code and Data Size: Current and previous core subsystem library sizes are
11680 shown below. These are the code and data sizes for the acpica.lib
11682 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11683 any ACPI driver or OSPM code. The debug version of the code includes the
11684 debug output trace mechanism and has a much larger code and data size.
11686 that these values will vary depending on the efficiency of the compiler
11688 the compiler options used during generation.
11691 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
11692 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
11694 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11695 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11698 2) iASL Compiler/Disassembler:
11700 Fixed a problem with constant folding and the LNot operator. LNot was
11701 returning 1 in the TRUE case, not Ones as per the ACPI specification.
11703 could result in the generation of an incorrect folded/reduced constant.
11705 End-Of-File is now allowed within a "//"-style comment. A parse error no
11706 longer occurs if such a comment is at the very end of the input ASL
11710 Implemented the "-r" option to override the Revision in the table header.
11711 The initial use of this option will be to simplify the evaluation of the
11713 interpreter by allowing a single ASL source module to be compiled for
11715 32-bit or 64-bit integers.
11718 ----------------------------------------
11719 27 August 2004. Summary of changes for version 20040827:
11721 1) ACPI CA Core Subsystem:
11723 - Implemented support for implicit object conversion in the non-numeric
11724 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
11726 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
11727 the second operand is implicitly converted on the fly to match the type
11729 the first operand. For example:
11731 LEqual (Source1, Source2)
11733 Source1 and Source2 must each evaluate to an integer, a string, or a
11735 The data type of Source1 dictates the required type of Source2. Source2
11737 implicitly converted if necessary to match the type of Source1.
11739 - Updated and corrected the behavior of the string conversion support.
11741 rules concerning conversion of buffers to strings (according to the ACPI
11742 specification) are as follows:
11744 ToDecimalString - explicit byte-wise conversion of buffer to string of
11745 decimal values (0-255) separated by commas. ToHexString - explicit byte-
11747 conversion of buffer to string of hex values (0-FF) separated by commas.
11748 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
11750 copy with no transform except NULL terminated. Any other implicit buffer-
11752 string conversion - byte-wise conversion of buffer to string of hex
11754 (0-FF) separated by spaces.
11756 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
11758 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
11760 one byte too short in the case of a node in the root scope. This could
11761 cause a fault during debug output.
11763 - Code and Data Size: Current and previous core subsystem library sizes
11765 shown below. These are the code and data sizes for the acpica.lib
11767 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11768 any ACPI driver or OSPM code. The debug version of the code includes the
11769 debug output trace mechanism and has a much larger code and data size.
11771 that these values will vary depending on the efficiency of the compiler
11773 the compiler options used during generation.
11776 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11777 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11779 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
11780 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
11783 2) iASL Compiler/Disassembler:
11785 - Fixed a Linux generation error.
11788 ----------------------------------------
11789 16 August 2004. Summary of changes for version 20040816:
11791 1) ACPI CA Core Subsystem:
11793 Designed and implemented support within the AML interpreter for the so-
11794 called "implicit return". This support returns the result of the last
11796 operation within a control method, in the absence of an explicit Return()
11797 operator. A few machines depend on this behavior, even though it is not
11798 explicitly supported by the ASL language. It is optional support that
11800 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
11802 Removed support for the PCI_Config address space from the internal low
11804 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
11805 support was not used internally, and would not work correctly anyway
11807 the PCI bus number and segment number were not supported. There are
11808 separate interfaces for PCI configuration space access because of the
11812 Code and Data Size: Current and previous core subsystem library sizes are
11813 shown below. These are the code and data sizes for the acpica.lib
11815 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11816 any ACPI driver or OSPM code. The debug version of the code includes the
11817 debug output trace mechanism and has a much larger code and data size.
11819 that these values will vary depending on the efficiency of the compiler
11821 the compiler options used during generation.
11824 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11825 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11827 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11828 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11831 2) iASL Compiler/Disassembler:
11833 Fixed a problem where constants in ASL expressions at the root level (not
11834 within a control method) could be inadvertently truncated during code
11835 generation. This problem was introduced in the 20040715 release.
11838 ----------------------------------------
11839 15 July 2004. Summary of changes for version 20040715:
11841 1) ACPI CA Core Subsystem:
11843 Restructured the internal HW GPE interfaces to pass/track the current
11845 of interrupts (enabled/disabled) in order to avoid possible deadlock and
11846 increase flexibility of the interfaces.
11848 Implemented a "lexicographical compare" for String and Buffer objects
11850 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
11852 as per further clarification to the ACPI specification. Behavior is
11854 to C library "strcmp".
11856 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
11857 external function. In the 32-bit non-debug case, the stack use has been
11858 reduced from 168 bytes to 32 bytes.
11860 Deployed a new run-time configuration flag,
11861 AcpiGbl_EnableInterpreterSlack,
11862 whose purpose is to allow the AML interpreter to forgive certain bad AML
11863 constructs. Default setting is FALSE.
11865 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
11867 support code. If enabled, it allows field access to go beyond the end of
11869 region definition if the field is within the region length rounded up to
11871 next access width boundary (a common coding error.)
11873 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
11874 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
11876 symbols are lowercased by the latest version of the AcpiSrc tool.
11878 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
11879 rename "Register" to simply "Reg" to prevent certain compilers from
11882 Code and Data Size: Current and previous core subsystem library sizes are
11883 shown below. These are the code and data sizes for the acpica.lib
11885 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11886 any ACPI driver or OSPM code. The debug version of the code includes the
11887 debug output trace mechanism and has a much larger code and data size.
11889 that these values will vary depending on the efficiency of the compiler
11891 the compiler options used during generation.
11894 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11895 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11897 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11898 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11901 2) iASL Compiler/Disassembler:
11903 Implemented full support for Package objects within the Case() operator.
11904 Note: The Break() operator is currently not supported within Case blocks
11905 (TermLists) as there is some question about backward compatibility with
11910 Fixed a problem where complex terms were not supported properly within
11914 Eliminated extraneous warning for compiler-emitted reserved names of the
11915 form "_T_x". (Used in Switch/Case operators.)
11917 Eliminated optimization messages for "_T_x" objects and small constants
11918 within the DefinitionBlock operator.
11921 ----------------------------------------
11922 15 June 2004. Summary of changes for version 20040615:
11924 1) ACPI CA Core Subsystem:
11926 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11928 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11931 All directory names in the entire source package are lower case, as they
11932 were in earlier releases.
11934 Implemented "Disassemble" command in the AML debugger that will
11936 a single control method.
11938 Code and Data Size: Current and previous core subsystem library sizes are
11939 shown below. These are the code and data sizes for the acpica.lib
11941 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11942 any ACPI driver or OSPM code. The debug version of the code includes the
11943 debug output trace mechanism and has a much larger code and data size.
11945 that these values will vary depending on the efficiency of the compiler
11947 the compiler options used during generation.
11950 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11951 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11954 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11955 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11958 2) iASL Compiler/Disassembler:
11960 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11962 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11965 All directory names in the entire source package are lower case, as they
11966 were in earlier releases.
11968 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
11971 Fixed an issue with the Windows version of the compiler where later
11973 of Windows place the FADT in the registry under the name "FADT" and not
11974 "FACP" as earlier versions did. This applies when using the -g or -
11975 d<nofilename> options. The compiler now looks for both strings as
11978 Fixed a problem with compiler namepath optimization where a namepath
11980 the Scope() operator could not be optimized if the namepath was a subpath
11982 the current scope path.
11984 ----------------------------------------
11985 27 May 2004. Summary of changes for version 20040527:
11987 1) ACPI CA Core Subsystem:
11989 Completed a new design and implementation for EBDA (Extended BIOS Data
11991 support in the RSDP scan code. The original code improperly scanned for
11993 EBDA by simply scanning from memory location 0 to 0x400. The correct
11995 is to first obtain the EBDA pointer from within the BIOS data area, then
11996 scan 1K of memory starting at the EBDA pointer. There appear to be few
11998 any machines that place the RSDP in the EBDA, however.
12000 Integrated a fix for a possible fault during evaluation of BufferField
12001 arguments. Obsolete code that was causing the problem was removed.
12003 Found and fixed a problem in the Field Support Code where data could be
12004 corrupted on a bit field read that starts on an aligned boundary but does
12005 not end on an aligned boundary. Merged the read/write "datum length"
12006 calculation code into a common procedure.
12008 Rolled in a couple of changes to the FreeBSD-specific header.
12011 Code and Data Size: Current and previous core subsystem library sizes are
12012 shown below. These are the code and data sizes for the acpica.lib
12014 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12015 any ACPI driver or OSPM code. The debug version of the code includes the
12016 debug output trace mechanism and has a much larger code and data size.
12018 that these values will vary depending on the efficiency of the compiler
12020 the compiler options used during generation.
12023 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12024 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12026 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12027 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12030 2) iASL Compiler/Disassembler:
12032 Fixed a generation warning produced by some overly-verbose compilers for
12036 ----------------------------------------
12037 14 May 2004. Summary of changes for version 20040514:
12039 1) ACPI CA Core Subsystem:
12041 Fixed a problem where hardware GPE enable bits sometimes not set properly
12042 during and after GPE method execution. Result of 04/27 changes.
12044 Removed extra "clear all GPEs" when sleeping/waking.
12046 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
12047 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
12049 the new AcpiEv* calls as appropriate.
12051 ACPI_OS_NAME was removed from the OS-specific headers. The default name
12053 now "Microsoft Windows NT" for maximum compatibility. However this can
12055 changed by modifying the acconfig.h file.
12057 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
12058 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
12060 Run _INI methods on ThermalZone objects. This is against the ACPI
12061 specification, but there is apparently ASL code in the field that has
12063 _INI methods, and apparently "other" AML interpreters execute them.
12065 Performed a full 16/32/64 bit lint that resulted in some small changes.
12067 Added a sleep simulation command to the AML debugger to test sleep code.
12069 Code and Data Size: Current and previous core subsystem library sizes are
12070 shown below. These are the code and data sizes for the acpica.lib
12072 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12073 any ACPI driver or OSPM code. The debug version of the code includes the
12074 debug output trace mechanism and has a much larger code and data size.
12076 that these values will vary depending on the efficiency of the compiler
12078 the compiler options used during generation.
12081 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12082 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12084 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12085 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12087 ----------------------------------------
12088 27 April 2004. Summary of changes for version 20040427:
12090 1) ACPI CA Core Subsystem:
12092 Completed a major overhaul of the GPE handling within ACPI CA. There are
12093 now three types of GPEs: wake-only, runtime-only, and combination
12095 The only GPEs allowed to be combination wake/run are for button-style
12096 devices such as a control-method power button, control-method sleep
12098 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
12100 referenced by any _PRW methods are marked for "runtime" and hardware
12101 enabled. Any GPE that is referenced by a _PRW method is marked for
12103 (and disabled at runtime). However, at sleep time, only those GPEs that
12104 have been specifically enabled for wake via the AcpiEnableGpe interface
12106 actually be hardware enabled.
12108 A new external interface has been added, AcpiSetGpeType(), that is meant
12110 be used by device drivers to force a GPE to a particular type. It will
12112 especially useful for the drivers for the button devices mentioned above.
12114 Completed restructuring of the ACPI CA initialization sequence so that
12115 default operation region handlers are installed before GPEs are
12117 and the _PRW methods are executed. This will prevent errors when the
12119 methods attempt to access system memory or I/O space.
12121 GPE enable/disable no longer reads the GPE enable register. We now keep
12123 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
12124 thus no longer depend on the hardware to maintain these bits.
12126 Always clear the wake status and fixed/GPE status bits before sleep, even
12129 Improved the AML debugger output for displaying the GPE blocks and their
12132 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
12136 Fixed a problem where the physical address was incorrectly calculated
12138 the Load() operator was used to directly load from an Operation Region
12140 loading from a Field object.) Also added check for minimum table length
12144 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
12147 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
12148 consistency with the other fields returned.
12150 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
12151 structure for each GPE in the system, so the size of this structure is
12154 CPU stack requirement reduction: Cleaned up the method execution and
12156 evaluation paths so that now a parameter structure is passed, instead of
12157 copying the various method parameters over and over again.
12159 In evregion.c: Correctly exit and reenter the interpreter region if and
12160 only if dispatching an operation region request to a user-installed
12162 Do not exit/reenter when dispatching to a default handler (e.g., default
12163 system memory or I/O handlers)
12166 Notes for updating drivers for the new GPE support. The following
12168 must be made to ACPI-related device drivers that are attached to one or
12170 GPEs: (This information will be added to the ACPI CA Programmer
12173 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
12175 explicitly call AcpiEnableGpe.
12176 2) There is a new interface called AcpiSetGpeType. This should be called
12177 before enabling the GPE. Also, this interface will automatically disable
12178 the GPE if it is currently enabled.
12179 3) AcpiEnableGpe no longer supports a GPE type flag.
12181 Specific drivers that must be changed:
12183 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
12184 AeGpeHandler, NULL);
12185 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
12186 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
12188 2) Button Drivers (Power, Lid, Sleep):
12189 Run _PRW method under parent device
12190 If _PRW exists: /* This is a control-method button */
12191 Extract GPE number and possibly GpeDevice
12192 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
12193 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
12195 For all other devices that have _PRWs, we automatically set the GPE type
12197 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
12199 must be done on a selective basis, usually requiring some kind of user
12201 to allow the user to pick the wake devices.
12204 Code and Data Size: Current and previous core subsystem library sizes are
12205 shown below. These are the code and data sizes for the acpica.lib
12207 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12208 any ACPI driver or OSPM code. The debug version of the code includes the
12209 debug output trace mechanism and has a much larger code and data size.
12211 that these values will vary depending on the efficiency of the compiler
12213 the compiler options used during generation.
12216 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12217 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12220 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12221 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12225 ----------------------------------------
12226 02 April 2004. Summary of changes for version 20040402:
12228 1) ACPI CA Core Subsystem:
12230 Fixed an interpreter problem where an indirect store through an ArgX
12231 parameter was incorrectly applying the "implicit conversion rules" during
12232 the store. From the ACPI specification: "If the target is a method local
12234 argument (LocalX or ArgX), no conversion is performed and the result is
12235 stored directly to the target". The new behavior is to disable implicit
12236 conversion during ALL stores to an ArgX.
12238 Changed the behavior of the _PRW method scan to ignore any and all errors
12239 returned by a given _PRW. This prevents the scan from aborting from the
12240 failure of any single _PRW.
12242 Moved the runtime configuration parameters from the global init procedure
12244 static variables in acglobal.h. This will allow the host to override the
12245 default values easily.
12247 Code and Data Size: Current and previous core subsystem library sizes are
12248 shown below. These are the code and data sizes for the acpica.lib
12250 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12251 any ACPI driver or OSPM code. The debug version of the code includes the
12252 debug output trace mechanism and has a much larger code and data size.
12254 that these values will vary depending on the efficiency of the compiler
12256 the compiler options used during generation.
12259 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12260 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12262 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12263 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12266 2) iASL Compiler/Disassembler:
12268 iASL now fully disassembles SSDTs. However, External() statements are
12270 generated automatically for unresolved symbols at this time. This is a
12271 planned feature for future implementation.
12273 Fixed a scoping problem in the disassembler that occurs when the type of
12275 target of a Scope() operator is overridden. This problem caused an
12276 incorrectly nested internal namespace to be constructed.
12278 Any warnings or errors that are emitted during disassembly are now
12280 out automatically so that the resulting file can be recompiled without
12284 ----------------------------------------
12285 26 March 2004. Summary of changes for version 20040326:
12287 1) ACPI CA Core Subsystem:
12289 Implemented support for "wake" GPEs via interaction between GPEs and the
12290 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
12291 identified as a WAKE GPE and by default will no longer be enabled at
12292 runtime. Previously, we were blindly enabling all GPEs with a
12294 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
12296 believe this has been the cause of thousands of "spurious" GPEs on some
12299 This new GPE behavior is can be reverted to the original behavior (enable
12300 ALL GPEs at runtime) via a runtime flag.
12302 Fixed a problem where aliased control methods could not access objects
12303 properly. The proper scope within the namespace was not initialized
12304 (transferred to the target of the aliased method) before executing the
12307 Fixed a potential race condition on internal object deletion on the
12309 object in AcpiEvaluateObject.
12311 Integrated a fix for resource descriptors where both _MEM and _MTP were
12312 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
12313 wide, 0x0F instead of 0x03.)
12315 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
12318 fault in some cases.
12320 Updated Notify() values for debug statements in evmisc.c
12322 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
12324 Code and Data Size: Current and previous core subsystem library sizes are
12325 shown below. These are the code and data sizes for the acpica.lib
12327 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12328 any ACPI driver or OSPM code. The debug version of the code includes the
12329 debug output trace mechanism and has a much larger code and data size.
12331 that these values will vary depending on the efficiency of the compiler
12333 the compiler options used during generation.
12337 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12338 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12340 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12341 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12343 ----------------------------------------
12344 11 March 2004. Summary of changes for version 20040311:
12346 1) ACPI CA Core Subsystem:
12348 Fixed a problem where errors occurring during the parse phase of control
12349 method execution did not abort cleanly. For example, objects created and
12350 installed in the namespace were not deleted. This caused all subsequent
12351 invocations of the method to return the AE_ALREADY_EXISTS exception.
12353 Implemented a mechanism to force a control method to "Serialized"
12355 if the method attempts to create namespace objects. (The root of the
12356 AE_ALREADY_EXISTS problem.)
12358 Implemented support for the predefined _OSI "internal" control method.
12359 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
12361 "Windows 2001.1", and can be easily upgraded for new strings as
12363 This feature will allow "other" operating systems to execute the fully
12364 tested, "Windows" code path through the ASL code
12366 Global Lock Support: Now allows multiple acquires and releases with any
12367 internal thread. Removed concept of "owning thread" for this special
12370 Fixed two functions that were inappropriately declaring large objects on
12372 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
12374 method execution considerably.
12376 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
12377 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
12379 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
12380 defined on the machine.
12382 Implemented two runtime options: One to force all control method
12384 to "Serialized" to mimic Windows behavior, another to disable _OSI
12386 if it causes problems on a given machine.
12388 Code and Data Size: Current and previous core subsystem library sizes are
12389 shown below. These are the code and data sizes for the acpica.lib
12391 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12392 any ACPI driver or OSPM code. The debug version of the code includes the
12393 debug output trace mechanism and has a much larger code and data size.
12395 that these values will vary depending on the efficiency of the compiler
12397 the compiler options used during generation.
12400 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12401 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12403 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12404 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12406 2) iASL Compiler/Disassembler:
12408 Fixed an array size problem for FreeBSD that would cause the compiler to
12411 ----------------------------------------
12412 20 February 2004. Summary of changes for version 20040220:
12415 1) ACPI CA Core Subsystem:
12417 Implemented execution of _SxD methods for Device objects in the
12418 GetObjectInfo interface.
12420 Fixed calls to _SST method to pass the correct arguments.
12422 Added a call to _SST on wake to restore to "working" state.
12424 Check for End-Of-Buffer failure case in the WalkResources interface.
12426 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
12427 structures to the beginning of the file.
12429 After wake, clear GPE status register(s) before enabling GPEs.
12431 After wake, clear/enable power button. (Perhaps we should clear/enable
12433 fixed events upon wake.)
12435 Fixed a couple of possible memory leaks in the Namespace manager.
12437 Integrated latest acnetbsd.h file.
12439 ----------------------------------------
12440 11 February 2004. Summary of changes for version 20040211:
12443 1) ACPI CA Core Subsystem:
12445 Completed investigation and implementation of the call-by-reference
12446 mechanism for control method arguments.
12448 Fixed a problem where a store of an object into an indexed package could
12449 fail if the store occurs within a different method than the method that
12450 created the package.
12452 Fixed a problem where the ToDecimal operator could return incorrect
12455 Fixed a problem where the CopyObject operator could fail on some of the
12457 obscure objects (e.g., Reference objects.)
12459 Improved the output of the Debug object to display buffer, package, and
12462 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
12464 the expected result.
12466 Added permanent ACPI_REPORT_ERROR macros for all instances of the
12467 ACPI_AML_INTERNAL exception.
12469 Integrated latest version of acfreebsd.h
12471 ----------------------------------------
12472 16 January 2004. Summary of changes for version 20040116:
12474 The purpose of this release is primarily to update the copyright years in
12475 each module, thus causing a huge number of diffs. There are a few small
12476 functional changes, however.
12478 1) ACPI CA Core Subsystem:
12480 Improved error messages when there is a problem finding one or more of
12482 required base ACPI tables
12484 Reintroduced the definition of APIC_HEADER in actbl.h
12486 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
12488 Removed extraneous reference to NewObj in dsmthdat.c
12492 Fixed a problem introduced in December that disabled the correct
12494 of Resource Templates
12497 ----------------------------------------
12498 03 December 2003. Summary of changes for version 20031203:
12500 1) ACPI CA Core Subsystem:
12502 Changed the initialization of Operation Regions during subsystem
12503 init to perform two entire walks of the ACPI namespace; The first
12504 to initialize the regions themselves, the second to execute the
12505 _REG methods. This fixed some interdependencies across _REG
12506 methods found on some machines.
12508 Fixed a problem where a Store(Local0, Local1) could simply update
12509 the object reference count, and not create a new copy of the
12510 object if the Local1 is uninitialized.
12512 Implemented support for the _SST reserved method during sleep
12515 Implemented support to clear the SLP_TYP and SLP_EN bits when
12516 waking up, this is apparently required by some machines.
12518 When sleeping, clear the wake status only if SleepState is not S5.
12520 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
12521 pointer arithmetic advanced a string pointer too far.
12523 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
12524 could be returned if the requested table has not been loaded.
12526 Within the support for IRQ resources, restructured the handling of
12527 the active and edge/level bits.
12529 Fixed a few problems in AcpiPsxExecute() where memory could be
12530 leaked under certain error conditions.
12532 Improved error messages for the cases where the ACPI mode could
12535 Code and Data Size: Current and previous core subsystem library
12536 sizes are shown below. These are the code and data sizes for the
12537 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12538 these values do not include any ACPI driver or OSPM code. The
12539 debug version of the code includes the debug output trace
12540 mechanism and has a much larger code and data size. Note that
12541 these values will vary depending on the efficiency of the compiler
12542 and the compiler options used during generation.
12544 Previous Release (20031029):
12545 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12546 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12548 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12549 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12551 2) iASL Compiler/Disassembler:
12553 Implemented a fix for the iASL disassembler where a bad index was
12554 generated. This was most noticeable on 64-bit platforms
12557 ----------------------------------------
12558 29 October 2003. Summary of changes for version 20031029:
12560 1) ACPI CA Core Subsystem:
12563 Fixed a problem where a level-triggered GPE with an associated
12564 _Lxx control method was incorrectly cleared twice.
12566 Fixed a problem with the Field support code where an access can
12567 occur beyond the end-of-region if the field is non-aligned but
12568 extends to the very end of the parent region (resulted in an
12569 AE_AML_REGION_LIMIT exception.)
12571 Fixed a problem with ACPI Fixed Events where an RT Clock handler
12572 would not get invoked on an RTC event. The RTC event bitmasks for
12573 the PM1 registers were not being initialized properly.
12575 Implemented support for executing _STA and _INI methods for
12576 Processor objects. Although this is currently not part of the
12577 ACPI specification, there is existing ASL code that depends on the
12578 init-time execution of these methods.
12580 Implemented and deployed a GetDescriptorName function to decode
12581 the various types of internal descriptors. Guards against null
12582 descriptors during debug output also.
12584 Implemented and deployed a GetNodeName function to extract the 4-
12585 character namespace node name. This function simplifies the debug
12586 and error output, as well as guarding against null pointers during
12589 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
12590 simplify the debug and error output of 64-bit integers. This
12591 macro replaces the HIDWORD and LODWORD macros for dumping these
12594 Updated the implementation of the Stall() operator to only call
12595 AcpiOsStall(), and also return an error if the operand is larger
12596 than 255. This preserves the required behavior of not
12597 relinquishing the processor, as would happen if AcpiOsSleep() was
12598 called for "long stalls".
12600 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
12601 initialized are now treated as NOOPs.
12603 Cleaned up a handful of warnings during 64-bit generation.
12605 Fixed a reported error where and incorrect GPE number was passed
12606 to the GPE dispatch handler. This value is only used for error
12607 output, however. Used this opportunity to clean up and streamline
12608 the GPE dispatch code.
12610 Code and Data Size: Current and previous core subsystem library
12611 sizes are shown below. These are the code and data sizes for the
12612 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12613 these values do not include any ACPI driver or OSPM code. The
12615 debug version of the code includes the debug output trace
12616 mechanism and has a much larger code and data size. Note that
12617 these values will vary depending on the efficiency of the compiler
12618 and the compiler options used during generation.
12620 Previous Release (20031002):
12621 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12622 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12624 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12625 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12628 2) iASL Compiler/Disassembler:
12630 Updated the iASL compiler to return an error if the operand to the
12631 Stall() operator is larger than 255.
12634 ----------------------------------------
12635 02 October 2003. Summary of changes for version 20031002:
12638 1) ACPI CA Core Subsystem:
12640 Fixed a problem with Index Fields where the index was not
12641 incremented for fields that require multiple writes to the
12642 index/data registers (Fields that are wider than the data
12645 Fixed a problem with all Field objects where a write could go
12646 beyond the end-of-field if the field was larger than the access
12647 granularity and therefore required multiple writes to complete the
12648 request. An extra write beyond the end of the field could happen
12651 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
12652 would incorrectly be returned if the width of the Data Register
12653 was larger than the specified field access width.
12655 Completed fixes for LoadTable() and Unload() and verified their
12656 operation. Implemented full support for the "DdbHandle" object
12657 throughout the ACPI CA subsystem.
12659 Implemented full support for the MADT and ECDT tables in the ACPI
12660 CA header files. Even though these tables are not directly
12661 consumed by ACPI CA, the header definitions are useful for ACPI
12664 Integrated resource descriptor fixes posted to the Linux ACPI
12665 list. This included checks for minimum descriptor length, and
12666 support for trailing NULL strings within descriptors that have
12667 optional string elements.
12669 Code and Data Size: Current and previous core subsystem library
12670 sizes are shown below. These are the code and data sizes for the
12671 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12672 these values do not include any ACPI driver or OSPM code. The
12673 debug version of the code includes the debug output trace
12674 mechanism and has a much larger code and data size. Note that
12675 these values will vary depending on the efficiency of the compiler
12676 and the compiler options used during generation.
12678 Previous Release (20030918):
12679 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12680 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12682 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12683 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12688 Implemented detection of non-ASCII characters within the input
12689 source ASL file. This catches attempts to compile binary (AML)
12690 files early in the compile, with an informative error message.
12692 Fixed a problem where the disassembler would fault if the output
12693 filename could not be generated or if the output file could not be
12696 ----------------------------------------
12697 18 September 2003. Summary of changes for version 20030918:
12700 1) ACPI CA Core Subsystem:
12702 Found and fixed a longstanding problem with the late execution of
12703 the various deferred AML opcodes (such as Operation Regions,
12704 Buffer Fields, Buffers, and Packages). If the name string
12705 specified for the name of the new object placed the object in a
12706 scope other than the current scope, the initialization/execution
12707 of the opcode failed. The solution to this problem was to
12708 implement a mechanism where the late execution of such opcodes
12709 does not attempt to lookup/create the name a second time in an
12710 incorrect scope. This fixes the "region size computed
12711 incorrectly" problem.
12713 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
12714 Global Lock AE_BAD_PARAMETER error.
12716 Fixed several 64-bit issues with prototypes, casting and data
12719 Removed duplicate prototype from acdisasm.h
12721 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
12723 Code and Data Size: Current and previous core subsystem library
12724 sizes are shown below. These are the code and data sizes for the
12725 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12726 these values do not include any ACPI driver or OSPM code. The
12727 debug version of the code includes the debug output trace
12728 mechanism and has a much larger code and data size. Note that
12729 these values will vary depending on the efficiency of the compiler
12730 and the compiler options used during generation.
12734 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12735 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12737 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12738 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12743 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
12744 correct sleep time in seconds.
12746 ----------------------------------------
12747 14 July 2003. Summary of changes for version 20030619:
12749 1) ACPI CA Core Subsystem:
12751 Parse SSDTs in order discovered, as opposed to reverse order
12754 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
12761 Dynamically allocate SDT list (suggested by Andi Kleen)
12763 proc function return value cleanups (Andi Kleen)
12765 Correctly handle NMI watchdog during long stalls (Andrew Morton)
12767 Make it so acpismp=force works (reported by Andrew Morton)
12770 ----------------------------------------
12771 19 June 2003. Summary of changes for version 20030619:
12773 1) ACPI CA Core Subsystem:
12775 Fix To/FromBCD, eliminating the need for an arch-specific #define.
12777 Do not acquire a semaphore in the S5 shutdown path.
12779 Fix ex_digits_needed for 0. (Takayoshi Kochi)
12781 Fix sleep/stall code reversal. (Andi Kleen)
12783 Revert a change having to do with control method calling
12788 acpiphp update (Takayoshi Kochi)
12790 Export acpi_disabled for sonypi (Stelian Pop)
12792 Mention acpismp=force in config help
12794 Re-add acpitable.c and acpismp=force. This improves backwards
12796 compatibility and also cleans up the code to a significant degree.
12798 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
12800 ----------------------------------------
12801 22 May 2003. Summary of changes for version 20030522:
12803 1) ACPI CA Core Subsystem:
12805 Found and fixed a reported problem where an AE_NOT_FOUND error
12806 occurred occasionally during _BST evaluation. This turned out to
12807 be an Owner ID allocation issue where a called method did not get
12808 a new ID assigned to it. Eventually, (after 64k calls), the Owner
12809 ID UINT16 would wraparound so that the ID would be the same as the
12810 caller's and the called method would delete the caller's
12813 Implemented extended error reporting for control methods that are
12814 aborted due to a run-time exception. Output includes the exact
12815 AML instruction that caused the method abort, a dump of the method
12816 locals and arguments at the time of the abort, and a trace of all
12817 nested control method calls.
12819 Modified the interpreter to allow the creation of buffers of zero
12820 length from the AML code. Implemented new code to ensure that no
12821 attempt is made to actually allocate a memory buffer (of length
12822 zero) - instead, a simple buffer object with a NULL buffer pointer
12823 and length zero is created. A warning is no longer issued when
12824 the AML attempts to create a zero-length buffer.
12826 Implemented a workaround for the "leading asterisk issue" in
12827 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
12828 asterisk is automatically removed if present in any HID, UID, or
12829 CID strings. The iASL compiler will still flag this asterisk as
12832 Implemented full support for _CID methods that return a package of
12833 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
12834 now additionally returns a device _CID list if present. This
12835 required a change to the external interface in order to pass an
12836 ACPI_BUFFER object as a parameter since the _CID list is of
12839 Fixed a problem with the new AE_SAME_HANDLER exception where
12840 handler initialization code did not know about this exception.
12842 Code and Data Size: Current and previous core subsystem library
12843 sizes are shown below. These are the code and data sizes for the
12844 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12845 these values do not include any ACPI driver or OSPM code. The
12846 debug version of the code includes the debug output trace
12847 mechanism and has a much larger code and data size. Note that
12848 these values will vary depending on the efficiency of the compiler
12849 and the compiler options used during generation.
12851 Previous Release (20030509):
12852 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12853 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12855 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12856 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12861 Fixed a bug in which we would reinitialize the ACPI interrupt
12862 after it was already working, thus disabling all ACPI and the IRQs
12863 for any other device sharing the interrupt. (Thanks to Stian
12866 Toshiba driver update (John Belmonte)
12868 Return only 0 or 1 for our interrupt handler status (Andrew
12874 Fixed a reported problem where multiple (nested) ElseIf()
12875 statements were not handled correctly by the compiler, resulting
12876 in incorrect warnings and incorrect AML code. This was a problem
12877 in both the ASL parser and the code generator.
12882 Added changes to existing interfaces, new exception codes, and new
12883 text concerning reference count object management versus garbage
12886 ----------------------------------------
12887 09 May 2003. Summary of changes for version 20030509.
12890 1) ACPI CA Core Subsystem:
12892 Changed the subsystem initialization sequence to hold off
12893 installation of address space handlers until the hardware has been
12894 initialized and the system has entered ACPI mode. This is because
12895 the installation of space handlers can cause _REG methods to be
12896 run. Previously, the _REG methods could potentially be run before
12897 ACPI mode was enabled.
12899 Fixed some memory leak issues related to address space handler and
12900 notify handler installation. There were some problems with the
12901 reference count mechanism caused by the fact that the handler
12902 objects are shared across several namespace objects.
12904 Fixed a reported problem where reference counts within the
12905 namespace were not properly updated when named objects created by
12906 method execution were deleted.
12908 Fixed a reported problem where multiple SSDTs caused a deletion
12909 issue during subsystem termination. Restructured the table data
12910 structures to simplify the linked lists and the related code.
12912 Fixed a problem where the table ID associated with secondary
12913 tables (SSDTs) was not being propagated into the namespace objects
12914 created by those tables. This would only present a problem for
12915 tables that are unloaded at run-time, however.
12917 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
12918 type as the length parameter (instead of UINT32).
12920 Solved a long-standing problem where an ALREADY_EXISTS error
12921 appears on various systems. This problem could happen when there
12922 are multiple PCI_Config operation regions under a single PCI root
12923 bus. This doesn't happen very frequently, but there are some
12924 systems that do this in the ASL.
12926 Fixed a reported problem where the internal DeleteNode function
12927 was incorrectly handling the case where a namespace node was the
12928 first in the parent's child list, and had additional peers (not
12929 the only child, but first in the list of children.)
12931 Code and Data Size: Current core subsystem library sizes are shown
12932 below. These are the code and data sizes for the acpica.lib
12933 produced by the Microsoft Visual C++ 6.0 compiler, and these
12934 values do not include any ACPI driver or OSPM code. The debug
12935 version of the code includes the debug output trace mechanism and
12936 has a much larger code and data size. Note that these values will
12937 vary depending on the efficiency of the compiler and the compiler
12938 options used during generation.
12941 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12942 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12944 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12945 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12950 Allow ":" in OS override string (Ducrot Bruno)
12952 Kobject fix (Greg KH)
12955 3 iASL Compiler/Disassembler:
12957 Fixed a problem in the generation of the C source code files (AML
12958 is emitted in C source statements for BIOS inclusion) where the
12959 Ascii dump that appears within a C comment at the end of each line
12960 could cause a compile time error if the AML sequence happens to
12961 have an open comment or close comment sequence embedded.
12964 ----------------------------------------
12965 24 April 2003. Summary of changes for version 20030424.
12968 1) ACPI CA Core Subsystem:
12970 Support for big-endian systems has been implemented. Most of the
12971 support has been invisibly added behind big-endian versions of the
12972 ACPI_MOVE_* macros.
12974 Fixed a problem in AcpiHwDisableGpeBlock() and
12975 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
12976 low level hardware write routine. The offset parameter was
12977 actually eliminated from the low level read/write routines because
12978 they had become obsolete.
12980 Fixed a problem where a handler object was deleted twice during
12981 the removal of a fixed event handler.
12986 A fix for SMP systems with link devices was contributed by
12990 (2.5) Return whether we handled the interrupt in our IRQ handler.
12991 (Linux ISRs no longer return void, so we can propagate the handler
12992 return value from the ACPI CA core back to the OS.)
12998 The ACPI CA Programmer Reference has been updated to reflect new
12999 interfaces and changes to existing interfaces.
13001 ----------------------------------------
13002 28 March 2003. Summary of changes for version 20030328.
13004 1) ACPI CA Core Subsystem:
13006 The GPE Block Device support has been completed. New interfaces
13007 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
13008 interfaces (enable, disable, clear, getstatus) have been split
13009 into separate interfaces for Fixed Events and General Purpose
13010 Events (GPEs) in order to support GPE Block Devices properly.
13012 Fixed a problem where the error message "Failed to acquire
13013 semaphore" would appear during operations on the embedded
13016 Code and Data Size: Current core subsystem library sizes are shown
13017 below. These are the code and data sizes for the acpica.lib
13018 produced by the Microsoft Visual C++ 6.0 compiler, and these
13019 values do not include any ACPI driver or OSPM code. The debug
13020 version of the code includes the debug output trace mechanism and
13021 has a much larger code and data size. Note that these values will
13022 vary depending on the efficiency of the compiler and the compiler
13023 options used during generation.
13026 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13027 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13029 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13030 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13033 ----------------------------------------
13034 28 February 2003. Summary of changes for version 20030228.
13037 1) ACPI CA Core Subsystem:
13039 The GPE handling and dispatch code has been completely overhauled
13040 in preparation for support of GPE Block Devices (ID ACPI0006).
13041 This affects internal data structures and code only; there should
13042 be no differences visible externally. One new file has been
13045 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
13046 fields that are used to determine the GPE block lengths. The
13047 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
13048 structures are ignored. This is per the ACPI specification but it
13049 isn't very clear. The full 256 Block 0/1 GPEs are now supported
13050 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
13052 In the SCI interrupt handler, removed the read of the PM1_CONTROL
13053 register to look at the SCI_EN bit. On some machines, this read
13054 causes an SMI event and greatly slows down SCI events. (This may
13055 in fact be the cause of slow battery status response on some
13058 Fixed a problem where a store of a NULL string to a package object
13059 could cause the premature deletion of the object. This was seen
13060 during execution of the battery _BIF method on some systems,
13061 resulting in no battery data being returned.
13063 Added AcpiWalkResources interface to simplify parsing of resource
13066 Code and Data Size: Current core subsystem library sizes are shown
13067 below. These are the code and data sizes for the acpica.lib
13068 produced by the Microsoft Visual C++ 6.0 compiler, and these
13069 values do not include any ACPI driver or OSPM code. The debug
13070 version of the code includes the debug output trace mechanism and
13071 has a much larger code and data size. Note that these values will
13072 vary depending on the efficiency of the compiler and the compiler
13073 options used during generation.
13076 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13077 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13079 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13080 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13085 S3 fixes (Ole Rohne)
13087 Update ACPI PHP driver with to use new acpi_walk_resource API
13090 Add S4BIOS support (Pavel Machek)
13092 Map in entire table before performing checksum (John Stultz)
13094 Expand the mem= cmdline to allow the specification of reserved and
13095 ACPI DATA blocks (Pavel Machek)
13097 Never use ACPI on VISWS
13099 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
13101 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
13102 causing us to think that some systems support C2 when they really
13105 Do not count processor objects for non-present CPUs (Thanks to
13111 Fixed a problem where ASL include files could not be found and
13114 Added support for the _PDC reserved name.
13117 ----------------------------------------
13118 22 January 2003. Summary of changes for version 20030122.
13121 1) ACPI CA Core Subsystem:
13123 Added a check for constructs of the form: Store (Local0, Local0)
13124 where Local0 is not initialized. Apparently, some BIOS
13125 programmers believe that this is a NOOP. Since this store doesn't
13126 do anything anyway, the new prototype behavior will ignore this
13127 error. This is a case where we can relax the strict checking in
13128 the interpreter in the name of compatibility.
13133 The AcpiSrc Source Conversion Utility has been released with the
13134 Linux package for the first time. This is the utility that is
13135 used to convert the ACPI CA base source code to the Linux version.
13137 (Both) Handle P_BLK lengths shorter than 6 more gracefully
13139 (Both) Move more headers to include/acpi, and delete an unused
13142 (Both) Move drivers/acpi/include directory to include/acpi
13144 (Both) Boot functions don't use cmdline, so don't pass it around
13146 (Both) Remove include of unused header (Adrian Bunk)
13148 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
13150 former now also includes the latter, acpiphp.h only needs the one,
13153 (2.5) Make it possible to select method of bios restoring after S3
13154 resume. [=> no more ugly ifdefs] (Pavel Machek)
13156 (2.5) Make proc write interfaces work (Pavel Machek)
13158 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
13160 (2.5) Break out ACPI Perf code into its own module, under cpufreq
13161 (Dominik Brodowski)
13163 (2.4) S4BIOS support (Ducrot Bruno)
13165 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
13171 Added support to disassemble SSDT and PSDTs.
13173 Implemented support to obtain SSDTs from the Windows registry if
13177 ----------------------------------------
13178 09 January 2003. Summary of changes for version 20030109.
13180 1) ACPI CA Core Subsystem:
13182 Changed the behavior of the internal Buffer-to-String conversion
13183 function. The current ACPI specification states that the contents
13184 of the buffer are "converted to a string of two-character
13185 hexadecimal numbers, each separated by a space". Unfortunately,
13186 this definition is not backwards compatible with existing ACPI 1.0
13187 implementations (although the behavior was not defined in the ACPI
13188 1.0 specification). The new behavior simply copies data from the
13189 buffer to the string until a null character is found or the end of
13190 the buffer is reached. The new String object is always null
13191 terminated. This problem was seen during the generation of _BIF
13192 battery data where incorrect strings were returned for battery
13193 type, etc. This will also require an errata to the ACPI
13196 Renamed all instances of NATIVE_UINT and NATIVE_INT to
13197 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
13199 Copyright in all module headers (both Linux and non-Linux) has be
13202 Code and Data Size: Current core subsystem library sizes are shown
13203 below. These are the code and data sizes for the acpica.lib
13204 produced by the Microsoft Visual C++ 6.0 compiler, and these
13205 values do not include any ACPI driver or OSPM code. The debug
13206 version of the code includes the debug output trace mechanism and
13207 has a much larger code and data size. Note that these values will
13208 vary depending on the efficiency of the compiler and the compiler
13209 options used during generation.
13212 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13213 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13215 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13216 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13221 Fixed an oops on module insertion/removal (Matthew Tippett)
13223 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
13225 (2.5) Replace pr_debug (Randy Dunlap)
13227 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
13229 (Both) Eliminate spawning of thread from timer callback, in favor
13232 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
13234 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
13236 (Both) Add missing statics to button.c (Pavel Machek)
13238 Several changes have been made to the source code translation
13239 utility that generates the Linux Code in order to make the code
13242 All typedefs on structs and unions have been removed in keeping
13243 with the Linux coding style.
13245 Removed the non-Linux SourceSafe module revision number from each
13248 Completed major overhaul of symbols to be lowercased for linux.
13249 Doubled the number of symbols that are lowercased.
13251 Fixed a problem where identifiers within procedure headers and
13252 within quotes were not fully lower cased (they were left with a
13255 Some C macros whose only purpose is to allow the generation of 16-
13256 bit code are now completely removed in the Linux code, increasing
13257 readability and maintainability.
13259 ----------------------------------------
13261 12 December 2002. Summary of changes for version 20021212.
13264 1) ACPI CA Core Subsystem:
13266 Fixed a problem where the creation of a zero-length AML Buffer
13267 would cause a fault.
13269 Fixed a problem where a Buffer object that pointed to a static AML
13270 buffer (in an ACPI table) could inadvertently be deleted, causing
13273 Fixed a problem where a user buffer (passed in to the external
13274 ACPI CA interfaces) could be overwritten if the buffer was too
13275 small to complete the operation, causing memory corruption.
13277 Fixed a problem in the Buffer-to-String conversion code where a
13278 string of length one was always returned, regardless of the size
13279 of the input Buffer object.
13281 Removed the NATIVE_CHAR data type across the entire source due to
13282 lack of need and lack of consistent use.
13284 Code and Data Size: Current core subsystem library sizes are shown
13285 below. These are the code and data sizes for the acpica.lib
13286 produced by the Microsoft Visual C++ 6.0 compiler, and these
13287 values do not include any ACPI driver or OSPM code. The debug
13288 version of the code includes the debug output trace mechanism and
13289 has a much larger code and data size. Note that these values will
13290 vary depending on the efficiency of the compiler and the compiler
13291 options used during generation.
13294 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13295 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13297 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13298 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13301 ----------------------------------------
13302 05 December 2002. Summary of changes for version 20021205.
13304 1) ACPI CA Core Subsystem:
13306 Fixed a problem where a store to a String or Buffer object could
13307 cause corruption of the DSDT if the object type being stored was
13308 the same as the target object type and the length of the object
13309 being stored was equal to or smaller than the original (existing)
13310 target object. This was seen to cause corruption of battery _BIF
13311 buffers if the _BIF method modified the buffer on the fly.
13313 Fixed a problem where an internal error was generated if a control
13314 method invocation was used in an OperationRegion, Buffer, or
13315 Package declaration. This was caused by the deferred parsing of
13316 the control method and thus the deferred creation of the internal
13317 method object. The solution to this problem was to create the
13318 internal method object at the moment the method is encountered in
13319 the first pass - so that subsequent references to the method will
13320 able to obtain the required parameter count and thus properly
13321 parse the method invocation. This problem presented itself as an
13322 AE_AML_INTERNAL during the pass 1 parse phase during table load.
13324 Fixed a problem where the internal String object copy routine did
13325 not always allocate sufficient memory for the target String object
13326 and caused memory corruption. This problem was seen to cause
13327 "Allocation already present in list!" errors as memory allocation
13330 Implemented a new function for the evaluation of namespace objects
13331 that allows the specification of the allowable return object
13332 types. This simplifies a lot of code that checks for a return
13333 object of one or more specific objects returned from the
13334 evaluation (such as _STA, etc.) This may become and external
13335 function if it would be useful to ACPI-related drivers.
13337 Completed another round of prefixing #defines with "ACPI_" for
13340 Completed additional code restructuring to allow more modular
13341 linking for iASL compiler and AcpiExec. Several files were split
13342 creating new files. New files: nsparse.c dsinit.c evgpe.c
13344 Implemented an abort mechanism to terminate an executing control
13345 method via the AML debugger. This feature is useful for debugging
13346 control methods that depend (wait) for specific hardware
13349 Code and Data Size: Current core subsystem library sizes are shown
13350 below. These are the code and data sizes for the acpica.lib
13351 produced by the Microsoft Visual C++ 6.0 compiler, and these
13352 values do not include any ACPI driver or OSPM code. The debug
13353 version of the code includes the debug output trace mechanism and
13354 has a much larger code and data size. Note that these values will
13355 vary depending on the efficiency of the compiler and the compiler
13356 options used during generation.
13359 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13360 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13362 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13363 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13366 2) iASL Compiler/Disassembler
13368 Fixed a compiler code generation problem for "Interrupt" Resource
13369 Descriptors. If specified in the ASL, the optional "Resource
13370 Source Index" and "Resource Source" fields were not inserted into
13371 the correct location within the AML resource descriptor, creating
13372 an invalid descriptor.
13374 Fixed a disassembler problem for "Interrupt" resource descriptors.
13375 The optional "Resource Source Index" and "Resource Source" fields
13379 ----------------------------------------
13380 22 November 2002. Summary of changes for version 20021122.
13383 1) ACPI CA Core Subsystem:
13385 Fixed a reported problem where an object stored to a Method Local
13386 or Arg was not copied to a new object during the store - the
13387 object pointer was simply copied to the Local/Arg. This caused
13388 all subsequent operations on the Local/Arg to also affect the
13389 original source of the store operation.
13391 Fixed a problem where a store operation to a Method Local or Arg
13392 was not completed properly if the Local/Arg contained a reference
13393 (from RefOf) to a named field. The general-purpose store-to-
13394 namespace-node code is now used so that this case is handled
13397 Fixed a problem where the internal object copy routine would cause
13398 a protection fault if the object being copied was a Package and
13399 contained either 1) a NULL package element or 2) a nested sub-
13402 Fixed a problem with the GPE initialization that resulted from an
13403 ambiguity in the ACPI specification. One section of the
13404 specification states that both the address and length of the GPE
13405 block must be zero if the block is not supported. Another section
13406 implies that only the address need be zero if the block is not
13407 supported. The code has been changed so that both the address and
13408 the length must be non-zero to indicate a valid GPE block (i.e.,
13409 if either the address or the length is zero, the GPE block is
13412 Code and Data Size: Current core subsystem library sizes are shown
13413 below. These are the code and data sizes for the acpica.lib
13414 produced by the Microsoft Visual C++ 6.0 compiler, and these
13415 values do not include any ACPI driver or OSPM code. The debug
13416 version of the code includes the debug output trace mechanism and
13417 has a much larger code and data size. Note that these values will
13418 vary depending on the efficiency of the compiler and the compiler
13419 options used during generation.
13422 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13423 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13425 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13426 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13431 Cleaned up EC driver. Exported an external EC read/write
13432 interface. By going through this, other drivers (most notably
13433 sonypi) will be able to serialize access to the EC.
13436 3) iASL Compiler/Disassembler
13438 Implemented support to optionally generate include files for both
13439 ASM and C (the -i switch). This simplifies BIOS development by
13440 automatically creating include files that contain external
13441 declarations for the symbols that are created within the
13443 (optionally generated) ASM and C AML source files.
13446 ----------------------------------------
13447 15 November 2002. Summary of changes for version 20021115.
13449 1) ACPI CA Core Subsystem:
13451 Fixed a memory leak problem where an error during resolution of
13453 method arguments during a method invocation from another method
13454 failed to cleanup properly by deleting all successfully resolved
13457 Fixed a problem where the target of the Index() operator was not
13458 correctly constructed if the source object was a package. This
13459 problem has not been detected because the use of a target operand
13460 with Index() is very rare.
13462 Fixed a problem with the Index() operator where an attempt was
13463 made to delete the operand objects twice.
13465 Fixed a problem where an attempt was made to delete an operand
13466 twice during execution of the CondRefOf() operator if the target
13469 Implemented the first of perhaps several internal create object
13470 functions that create and initialize a specific object type. This
13471 consolidates duplicated code wherever the object is created, thus
13472 shrinking the size of the subsystem.
13474 Implemented improved debug/error messages for errors that occur
13475 during nested method invocations. All executing method pathnames
13476 are displayed (with the error) as the call stack is unwound - thus
13479 Fixed a problem introduced in the 10/02 release that caused
13480 premature deletion of a buffer object if a buffer was used as an
13481 ASL operand where an integer operand is required (Thus causing an
13482 implicit object conversion from Buffer to Integer.) The change in
13483 the 10/02 release was attempting to fix a memory leak (albeit
13486 Code and Data Size: Current core subsystem library sizes are shown
13487 below. These are the code and data sizes for the acpica.lib
13488 produced by the Microsoft Visual C++ 6.0 compiler, and these
13489 values do not include any ACPI driver or OSPM code. The debug
13490 version of the code includes the debug output trace mechanism and
13491 has a much larger code and data size. Note that these values will
13492 vary depending on the efficiency of the compiler and the compiler
13493 options used during generation.
13496 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13497 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13499 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13500 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13505 Changed the implementation of the ACPI semaphores to use down()
13506 instead of down_interruptable(). It is important that the
13507 execution of ACPI control methods not be interrupted by signals.
13508 Methods must run to completion, or the system may be left in an
13509 unknown/unstable state.
13511 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
13515 3) iASL Compiler/Disassembler
13518 Changed the default location of output files. All output files
13519 are now placed in the current directory by default instead of in
13520 the directory of the source file. This change may affect some
13521 existing makefiles, but it brings the behavior of the compiler in
13522 line with other similar tools. The location of the output files
13523 can be overridden with the -p command line switch.
13526 ----------------------------------------
13527 11 November 2002. Summary of changes for version 20021111.
13530 0) ACPI Specification 2.0B is released and is now available at:
13531 http://www.acpi.info/index.html
13534 1) ACPI CA Core Subsystem:
13536 Implemented support for the ACPI 2.0 SMBus Operation Regions.
13537 This includes the early detection and handoff of the request to
13538 the SMBus region handler (avoiding all of the complex field
13539 support code), and support for the bidirectional return packet
13540 from an SMBus write operation. This paves the way for the
13541 development of SMBus drivers in each host operating system.
13543 Fixed a problem where the semaphore WAIT_FOREVER constant was
13544 defined as 32 bits, but must be 16 bits according to the ACPI
13545 specification. This had the side effect of causing ASL
13546 Mutex/Event timeouts even though the ASL code requested a wait
13547 forever. Changed all internal references to the ACPI timeout
13548 parameter to 16 bits to prevent future problems. Changed the name
13549 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
13551 Code and Data Size: Current core subsystem library sizes are shown
13552 below. These are the code and data sizes for the acpica.lib
13553 produced by the Microsoft Visual C++ 6.0 compiler, and these
13554 values do not include any ACPI driver or OSPM code. The debug
13555 version of the code includes the debug output trace mechanism and
13556 has a much larger code and data size. Note that these values will
13557 vary depending on the efficiency of the compiler and the compiler
13558 options used during generation.
13561 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13562 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13564 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13565 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13570 Module loading/unloading fixes (John Cagle)
13573 3) iASL Compiler/Disassembler
13575 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
13577 Implemented support for the disassembly of all SMBus protocol
13578 keywords (SMBQuick, SMBWord, etc.)
13580 ----------------------------------------
13581 01 November 2002. Summary of changes for version 20021101.
13584 1) ACPI CA Core Subsystem:
13586 Fixed a problem where platforms that have a GPE1 block but no GPE0
13587 block were not handled correctly. This resulted in a "GPE
13588 overlap" error message. GPE0 is no longer required.
13590 Removed code added in the previous release that inserted nodes
13591 into the namespace in alphabetical order. This caused some side-
13592 effects on various machines. The root cause of the problem is
13593 still under investigation since in theory, the internal ordering
13594 of the namespace nodes should not matter.
13597 Enhanced error reporting for the case where a named object is not
13598 found during control method execution. The full ACPI namepath
13599 (name reference) of the object that was not found is displayed in
13602 Note: as a result of the overhaul of the namespace object types in
13603 the previous release, the namespace nodes for the predefined
13604 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
13605 instead of ACPI_TYPE_ANY. This simplifies the namespace
13606 management code but may affect code that walks the namespace tree
13607 looking for specific object types.
13609 Code and Data Size: Current core subsystem library sizes are shown
13610 below. These are the code and data sizes for the acpica.lib
13611 produced by the Microsoft Visual C++ 6.0 compiler, and these
13612 values do not include any ACPI driver or OSPM code. The debug
13613 version of the code includes the debug output trace mechanism and
13614 has a much larger code and data size. Note that these values will
13615 vary depending on the efficiency of the compiler and the compiler
13616 options used during generation.
13619 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13620 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13622 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13623 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13628 Fixed a problem introduced in the previous release where the
13629 Processor and Thermal objects were not recognized and installed in
13630 /proc. This was related to the scope type change described above.
13633 3) iASL Compiler/Disassembler
13635 Implemented the -g option to get all of the required ACPI tables
13636 from the registry and save them to files (Windows version of the
13637 compiler only.) The required tables are the FADT, FACS, and DSDT.
13639 Added ACPI table checksum validation during table disassembly in
13640 order to catch corrupted tables.
13643 ----------------------------------------
13644 22 October 2002. Summary of changes for version 20021022.
13646 1) ACPI CA Core Subsystem:
13648 Implemented a restriction on the Scope operator that the target
13649 must already exist in the namespace at the time the operator is
13650 encountered (during table load or method execution). In other
13651 words, forward references are not allowed and Scope() cannot
13652 create a new object. This changes the previous behavior where the
13653 interpreter would create the name if not found. This new behavior
13654 correctly enables the search-to-root algorithm during namespace
13655 lookup of the target name. Because of this upsearch, this fixes
13656 the known Compaq _SB_.OKEC problem and makes both the AML
13657 interpreter and iASL compiler compatible with other ACPI
13660 Completed a major overhaul of the internal ACPI object types for
13661 the ACPI Namespace and the associated operand objects. Many of
13662 these types had become obsolete with the introduction of the two-
13663 pass namespace load. This cleanup simplifies the code and makes
13664 the entire namespace load mechanism much clearer and easier to
13667 Improved debug output for tracking scope opening/closing to help
13668 diagnose scoping issues. The old scope name as well as the new
13669 scope name are displayed. Also improved error messages for
13670 problems with ASL Mutex objects and error messages for GPE
13673 Cleaned up the namespace dump code, removed obsolete code.
13675 All string output (for all namespace/object dumps) now uses the
13676 common ACPI string output procedure which handles escapes properly
13677 and does not emit non-printable characters.
13679 Fixed some issues with constants in the 64-bit version of the
13680 local C library (utclib.c)
13685 EC Driver: No longer attempts to acquire the Global Lock at
13689 3) iASL Compiler/Disassembler
13691 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
13692 2 opcodes outside of a control method. This means that the
13693 "executable" operators (versus the "namespace" operators) cannot
13694 be used at the table level; they can only be used within a control
13697 Implemented the restriction on the Scope() operator where the
13698 target must already exist in the namespace at the time the
13699 operator is encountered (during ASL compilation). In other words,
13700 forward references are not allowed and Scope() cannot create a new
13701 object. This makes the iASL compiler compatible with other ACPI
13702 implementations and makes the Scope() implementation adhere to the
13703 ACPI specification.
13705 Fixed a problem where namepath optimization for the Alias operator
13706 was optimizing the wrong path (of the two namepaths.) This caused
13707 a "Missing alias link" error message.
13709 Fixed a problem where an "unknown reserved name" warning could be
13710 incorrectly generated for names like "_SB" when the trailing
13711 underscore is not used in the original ASL.
13713 Fixed a problem where the reserved name check did not handle
13714 NamePaths with multiple NameSegs correctly. The first nameseg of
13715 the NamePath was examined instead of the last NameSeg.
13718 ----------------------------------------
13720 02 October 2002. Summary of changes for this release.
13723 1) ACPI CA Core Subsystem version 20021002:
13725 Fixed a problem where a store/copy of a string to an existing
13726 string did not always set the string length properly in the String
13729 Fixed a reported problem with the ToString operator where the
13730 behavior was identical to the ToHexString operator instead of just
13731 simply converting a raw buffer to a string data type.
13733 Fixed a problem where CopyObject and the other "explicit"
13734 conversion operators were not updating the internal namespace node
13735 type as part of the store operation.
13737 Fixed a memory leak during implicit source operand conversion
13738 where the original object was not deleted if it was converted to a
13739 new object of a different type.
13741 Enhanced error messages for all problems associated with namespace
13742 lookups. Common procedure generates and prints the lookup name as
13743 well as the formatted status.
13745 Completed implementation of a new design for the Alias support
13746 within the namespace. The existing design did not handle the case
13747 where a new object was assigned to one of the two names due to the
13748 use of an explicit conversion operator, resulting in the two names
13749 pointing to two different objects. The new design simply points
13750 the Alias name to the original name node - not to the object.
13751 This results in a level of indirection that must be handled in the
13752 name resolution mechanism.
13754 Code and Data Size: Current core subsystem library sizes are shown
13755 below. These are the code and data sizes for the acpica.lib
13756 produced by the Microsoft Visual C++ 6.0 compiler, and these
13757 values do not include any ACPI driver or OSPM code. The debug
13758 version of the code includes the debug output trace mechanism and
13759 has a larger code and data size. Note that these values will vary
13760 depending on the efficiency of the compiler and the compiler
13761 options used during generation.
13764 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13765 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13767 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13768 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13773 Initialize thermal driver's timer before it is used. (Knut
13776 Allow handling negative celsius values. (Kochi Takayoshi)
13778 Fix thermal management and make trip points. R/W (Pavel Machek)
13780 Fix /proc/acpi/sleep. (P. Christeas)
13782 IA64 fixes. (David Mosberger)
13784 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
13786 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
13790 3) iASL Compiler/Disassembler
13792 Clarified some warning/error messages.
13795 ----------------------------------------
13796 18 September 2002. Summary of changes for this release.
13799 1) ACPI CA Core Subsystem version 20020918:
13801 Fixed a reported problem with reference chaining (via the Index()
13802 and RefOf() operators) in the ObjectType() and SizeOf() operators.
13803 The definition of these operators includes the dereferencing of
13804 all chained references to return information on the base object.
13806 Fixed a problem with stores to indexed package elements - the
13807 existing code would not complete the store if an "implicit
13808 conversion" was not performed. In other words, if the existing
13809 object (package element) was to be replaced completely, the code
13810 didn't handle this case.
13812 Relaxed typechecking on the ASL "Scope" operator to allow the
13813 target name to refer to an object of type Integer, String, or
13814 Buffer, in addition to the scoping object types (Device,
13815 predefined Scopes, Processor, PowerResource, and ThermalZone.)
13816 This allows existing AML code that has workarounds for a bug in
13817 Windows to function properly. A warning is issued, however. This
13818 affects both the AML interpreter and the iASL compiler. Below is
13819 an example of this type of ASL code:
13825 Fixed some reported problems with 64-bit integer support in the
13826 local implementation of C library functions (clib.c)
13831 Use ACPI fix map region instead of IOAPIC region, since it is
13832 undefined in non-SMP.
13834 Ensure that the SCI has the proper polarity and trigger, even on
13835 systems that do not have an interrupt override entry in the MADT.
13837 2.5 big driver reorganization (Pat Mochel)
13839 Use early table mapping code from acpitable.c (Andi Kleen)
13841 New blacklist entries (Andi Kleen)
13843 Blacklist improvements. Split blacklist code out into a separate
13844 file. Move checking the blacklist to very early. Previously, we
13845 would use ACPI tables, and then halfway through init, check the
13846 blacklist -- too late. Now, it's early enough to completely fall-
13850 3) iASL Compiler/Disassembler version 20020918:
13852 Fixed a problem where the typechecking code didn't know that an
13853 alias could point to a method. In other words, aliases were not
13854 being dereferenced during typechecking.
13857 ----------------------------------------
13858 29 August 2002. Summary of changes for this release.
13860 1) ACPI CA Core Subsystem Version 20020829:
13862 If the target of a Scope() operator already exists, it must be an
13863 object type that actually opens a scope -- such as a Device,
13864 Method, Scope, etc. This is a fatal runtime error. Similar error
13865 check has been added to the iASL compiler also.
13867 Tightened up the namespace load to disallow multiple names in the
13868 same scope. This previously was allowed if both objects were of
13869 the same type. (i.e., a lookup was the same as entering a new
13875 Ensure that the ACPI interrupt has the proper trigger and
13878 local_irq_disable is extraneous. (Matthew Wilcox)
13880 Make "acpi=off" actually do what it says, and not use the ACPI
13881 interpreter *or* the tables.
13883 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
13887 3) iASL Compiler/Disassembler Version 20020829:
13889 Implemented namepath optimization for name declarations. For
13890 example, a declaration like "Method (\_SB_.ABCD)" would get
13891 optimized to "Method (ABCD)" if the declaration is within the
13892 \_SB_ scope. This optimization is in addition to the named
13893 reference path optimization first released in the previous
13894 version. This would seem to complete all possible optimizations
13895 for namepaths within the ASL/AML.
13897 If the target of a Scope() operator already exists, it must be an
13898 object type that actually opens a scope -- such as a Device,
13899 Method, Scope, etc.
13901 Implemented a check and warning for unreachable code in the same
13902 block below a Return() statement.
13904 Fixed a problem where the listing file was not generated if the
13905 compiler aborted if the maximum error count was exceeded (200).
13907 Fixed a problem where the typechecking of method return values was
13908 broken. This includes the check for a return value when the
13909 method is invoked as a TermArg (a return value is expected.)
13911 Fixed a reported problem where EOF conditions during a quoted
13912 string or comment caused a fault.
13915 ----------------------------------------
13916 15 August 2002. Summary of changes for this release.
13918 1) ACPI CA Core Subsystem Version 20020815:
13920 Fixed a reported problem where a Store to a method argument that
13921 contains a reference did not perform the indirect store correctly.
13922 This problem was created during the conversion to the new
13923 reference object model - the indirect store to a method argument
13924 code was not updated to reflect the new model.
13926 Reworked the ACPI mode change code to better conform to ACPI 2.0,
13927 handle corner cases, and improve code legibility (Kochi Takayoshi)
13929 Fixed a problem with the pathname parsing for the carat (^)
13930 prefix. The heavy use of the carat operator by the new namepath
13931 optimization in the iASL compiler uncovered a problem with the AML
13932 interpreter handling of this prefix. In the case where one or
13933 more carats precede a single nameseg, the nameseg was treated as
13934 standalone and the search rule (to root) was inadvertently
13935 applied. This could cause both the iASL compiler and the
13936 interpreter to find the wrong object or to miss the error that
13937 should occur if the object does not exist at that exact pathname.
13939 Found and fixed the problem where the HP Pavilion DSDT would not
13940 load. This was a relatively minor tweak to the table loading code
13941 (a problem caused by the unexpected encounter with a method
13942 invocation not within a control method), but it does not solve the
13943 overall issue of the execution of AML code at the table level.
13944 This investigation is still ongoing.
13946 Code and Data Size: Current core subsystem library sizes are shown
13947 below. These are the code and data sizes for the acpica.lib
13948 produced by the Microsoft Visual C++ 6.0 compiler, and these
13949 values do not include any ACPI driver or OSPM code. The debug
13950 version of the code includes the debug output trace mechanism and
13951 has a larger code and data size. Note that these values will vary
13952 depending on the efficiency of the compiler and the compiler
13953 options used during generation.
13956 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13957 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13959 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13960 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13965 Remove redundant slab.h include (Brad Hards)
13967 Fix several bugs in thermal.c (Herbert Nachtnebel)
13969 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
13971 Change acpi_system_suspend to use updated irq functions (Pavel
13974 Export acpi_get_firmware_table (Matthew Wilcox)
13976 Use proper root proc entry for ACPI (Kochi Takayoshi)
13978 Fix early-boot table parsing (Bjorn Helgaas)
13981 3) iASL Compiler/Disassembler
13983 Reworked the compiler options to make them more consistent and to
13984 use two-letter options where appropriate. We were running out of
13985 sensible letters. This may break some makefiles, so check the
13986 current options list by invoking the compiler with no parameters.
13988 Completed the design and implementation of the ASL namepath
13989 optimization option for the compiler. This option optimizes all
13990 references to named objects to the shortest possible path. The
13991 first attempt tries to utilize a single nameseg (4 characters) and
13992 the "search-to-root" algorithm used by the interpreter. If that
13993 cannot be used (because either the name is not in the search path
13994 or there is a conflict with another object with the same name),
13995 the pathname is optimized using the carat prefix (usually a
13996 shorter string than specifying the entire path from the root.)
13998 Implemented support to obtain the DSDT from the Windows registry
13999 (when the disassembly option is specified with no input file).
14000 Added this code as the implementation for AcpiOsTableOverride in
14001 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
14002 utility) to scan memory for the DSDT to the AcpiOsTableOverride
14003 function in the DOS OSL to make the disassembler truly OS
14006 Implemented a new option to disassemble and compile in one step.
14007 When used without an input filename, this option will grab the
14008 DSDT from the local machine, disassemble it, and compile it in one
14011 Added a warning message for invalid escapes (a backslash followed
14012 by any character other than the allowable escapes). This catches
14013 the quoted string error "\_SB_" (which should be "\\_SB_" ).
14015 Also, there are numerous instances in the ACPI specification where
14018 Added a compiler option to disable all optimizations. This is
14019 basically the "compatibility mode" because by using this option,
14020 the AML code will come out exactly the same as other ASL
14023 Added error messages for incorrectly ordered dependent resource
14024 functions. This includes: missing EndDependentFn macro at end of
14025 dependent resource list, nested dependent function macros (both
14026 start and end), and missing StartDependentFn macro. These are
14027 common errors that should be caught at compile time.
14029 Implemented _OSI support for the disassembler and compiler. _OSI
14030 must be included in the namespace for proper disassembly (because
14031 the disassembler must know the number of arguments.)
14033 Added an "optimization" message type that is optional (off by
14034 default). This message is used for all optimizations - including
14035 constant folding, integer optimization, and namepath optimization.
14037 ----------------------------------------
14038 25 July 2002. Summary of changes for this release.
14041 1) ACPI CA Core Subsystem Version 20020725:
14043 The AML Disassembler has been enhanced to produce compilable ASL
14044 code and has been integrated into the iASL compiler (see below) as
14045 well as the single-step disassembly for the AML debugger and the
14046 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
14047 resource templates and macros are fully supported. The
14048 disassembler has been tested on over 30 different AML files,
14049 producing identical AML when the resulting disassembled ASL file
14050 is recompiled with the same ASL compiler.
14052 Modified the Resource Manager to allow zero interrupts and zero
14053 dma channels during the GetCurrentResources call. This was
14054 causing problems on some platforms.
14056 Added the AcpiOsRedirectOutput interface to the OSL to simplify
14057 output redirection for the AcpiOsPrintf and AcpiOsVprintf
14060 Code and Data Size: Current core subsystem library sizes are shown
14061 below. These are the code and data sizes for the acpica.lib
14062 produced by the Microsoft Visual C++ 6.0 compiler, and these
14063 values do not include any ACPI driver or OSPM code. The debug
14064 version of the code includes the debug output trace mechanism and
14065 has a larger code and data size. Note that these values will vary
14066 depending on the efficiency of the compiler and the compiler
14067 options used during generation.
14070 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14071 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14073 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14074 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14079 Fixed a panic in the EC driver (Dominik Brodowski)
14081 Implemented checksum of the R/XSDT itself during Linux table scan
14087 The AML disassembler is integrated into the compiler. The "-d"
14088 option invokes the disassembler to completely disassemble an
14089 input AML file, producing as output a text ASL file with the
14090 extension ".dsl" (to avoid name collisions with existing .asl
14091 source files.) A future enhancement will allow the disassembler
14092 to obtain the BIOS DSDT from the registry under Windows.
14094 Fixed a problem with the VendorShort and VendorLong resource
14095 descriptors where an invalid AML sequence was created.
14097 Implemented a fix for BufferData term in the ASL parser. It was
14098 inadvertently defined twice, allowing invalid syntax to pass and
14099 causing reduction conflicts.
14101 Fixed a problem where the Ones opcode could get converted to a
14102 value of zero if "Ones" was used where a byte, word or dword value
14103 was expected. The 64-bit value is now truncated to the correct
14104 size with the correct value.
14108 ----------------------------------------
14109 02 July 2002. Summary of changes for this release.
14112 1) ACPI CA Core Subsystem Version 20020702:
14114 The Table Manager code has been restructured to add several new
14115 features. Tables that are not required by the core subsystem
14116 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
14117 validated in any way and are returned from AcpiGetFirmwareTable if
14118 requested. The AcpiOsTableOverride interface is now called for
14119 each table that is loaded by the subsystem in order to allow the
14120 host to override any table it chooses. Previously, only the DSDT
14121 could be overridden. Added one new files, tbrsdt.c and
14124 Fixed a problem with the conversion of internal package objects to
14125 external objects (when a package is returned from a control
14126 method.) The return buffer length was set to zero instead of the
14127 proper length of the package object.
14129 Fixed a reported problem with the use of the RefOf and DeRefOf
14130 operators when passing reference arguments to control methods. A
14131 new type of Reference object is used internally for references
14132 produced by the RefOf operator.
14134 Added additional error messages in the Resource Manager to explain
14135 AE_BAD_DATA errors when they occur during resource parsing.
14137 Split the AcpiEnableSubsystem into two primitives to enable a
14138 finer granularity initialization sequence. These two calls should
14139 be called in this order: AcpiEnableSubsystem (flags),
14140 AcpiInitializeObjects (flags). The flags parameter remains the
14146 Updated the ACPI utilities module to understand the new style of
14147 fully resolved package objects that are now returned from the core
14148 subsystem. This eliminates errors of the form:
14150 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
14151 acpi_utils-0430 [145] acpi_evaluate_reference:
14152 Invalid element in package (not a device reference)
14154 The method evaluation utility uses the new buffer allocation
14155 scheme instead of calling AcpiEvaluate Object twice.
14157 Added support for ECDT. This allows the use of the Embedded
14159 Controller before the namespace has been fully initialized, which
14160 is necessary for ACPI 2.0 support, and for some laptops to
14161 initialize properly. (Laptops using ECDT are still rare, so only
14162 limited testing was performed of the added functionality.)
14164 Fixed memory leaks in the EC driver.
14166 Eliminated a brittle code structure in acpi_bus_init().
14168 Eliminated the acpi_evaluate() helper function in utils.c. It is
14169 no longer needed since acpi_evaluate_object can optionally
14170 allocate memory for the return object.
14172 Implemented fix for keyboard hang when getting battery readings on
14173 some systems (Stephen White)
14175 PCI IRQ routing update (Dominik Brodowski)
14177 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
14180 ----------------------------------------
14181 11 June 2002. Summary of changes for this release.
14184 1) ACPI CA Core Subsystem Version 20020611:
14186 Fixed a reported problem where constants such as Zero and One
14187 appearing within _PRT packages were not handled correctly within
14188 the resource manager code. Originally reported against the ASL
14189 compiler because the code generator now optimizes integers to
14190 their minimal AML representation (i.e. AML constants if possible.)
14191 The _PRT code now handles all AML constant opcodes correctly
14192 (Zero, One, Ones, Revision).
14194 Fixed a problem with the Concatenate operator in the AML
14195 interpreter where a buffer result object was incorrectly marked as
14196 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
14198 All package sub-objects are now fully resolved before they are
14199 returned from the external ACPI interfaces. This means that name
14200 strings are resolved to object handles, and constant operators
14201 (Zero, One, Ones, Revision) are resolved to Integers.
14203 Implemented immediate resolution of the AML Constant opcodes
14204 (Zero, One, Ones, Revision) to Integer objects upon detection
14205 within the AML stream. This has simplified and reduced the
14206 generated code size of the subsystem by eliminating about 10
14207 switch statements for these constants (which previously were
14208 contained in Reference objects.) The complicating issues are that
14209 the Zero opcode is used as a "placeholder" for unspecified
14210 optional target operands and stores to constants are defined to be
14213 Code and Data Size: Current core subsystem library sizes are shown
14214 below. These are the code and data sizes for the acpica.lib
14215 produced by the Microsoft Visual C++ 6.0 compiler, and these
14216 values do not include any ACPI driver or OSPM code. The debug
14217 version of the code includes the debug output trace mechanism and
14218 has a larger code and data size. Note that these values will vary
14219 depending on the efficiency of the compiler and the compiler
14220 options used during generation.
14223 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14224 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14226 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14227 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14233 Added preliminary support for obtaining _TRA data for PCI root
14234 bridges (Bjorn Helgaas).
14237 3) iASL Compiler Version X2046:
14239 Fixed a problem where the "_DDN" reserved name was defined to be a
14240 control method with one argument. There are no arguments, and
14241 _DDN does not have to be a control method.
14243 Fixed a problem with the Linux version of the compiler where the
14244 source lines printed with error messages were the wrong lines.
14245 This turned out to be the "LF versus CR/LF" difference between
14246 Windows and Unix. This appears to be the longstanding issue
14247 concerning listing output and error messages.
14249 Fixed a problem with the Linux version of compiler where opcode
14250 names within error messages were wrong. This was caused by a
14251 slight difference in the output of the Flex tool on Linux versus
14254 Fixed a problem with the Linux compiler where the hex output files
14255 contained some garbage data caused by an internal buffer overrun.
14258 ----------------------------------------
14259 17 May 2002. Summary of changes for this release.
14262 1) ACPI CA Core Subsystem Version 20020517:
14264 Implemented a workaround to an BIOS bug discovered on the HP
14265 OmniBook where the FADT revision number and the table size are
14266 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
14267 behavior is to fallback to using only the ACPI 1.0 fields of the
14268 FADT if the table is too small to be a ACPI 2.0 table as claimed
14269 by the revision number. Although this is a BIOS bug, this is a
14270 case where the workaround is simple enough and with no side
14271 effects, so it seemed prudent to add it. A warning message is
14274 Implemented minimum size checks for the fixed-length ACPI tables -
14275 - the FADT and FACS, as well as consistency checks between the
14276 revision number and the table size.
14278 Fixed a reported problem in the table override support where the
14279 new table pointer was incorrectly treated as a physical address
14280 instead of a logical address.
14282 Eliminated the use of the AE_AML_ERROR exception and replaced it
14283 with more descriptive codes.
14285 Fixed a problem where an exception would occur if an ASL Field was
14286 defined with no named Field Units underneath it (used by some
14289 Code and Data Size: Current core subsystem library sizes are shown
14290 below. These are the code and data sizes for the acpica.lib
14291 produced by the Microsoft Visual C++ 6.0 compiler, and these
14292 values do not include any ACPI driver or OSPM code. The debug
14293 version of the code includes the debug output trace mechanism and
14294 has a larger code and data size. Note that these values will vary
14295 depending on the efficiency of the compiler and the compiler
14296 options used during generation.
14299 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14300 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14302 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14303 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14309 Much work done on ACPI init (MADT and PCI IRQ routing support).
14310 (Paul D. and Dominik Brodowski)
14312 Fix PCI IRQ-related panic on boot (Sam Revitch)
14314 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
14316 Fix "MHz" typo (Dominik Brodowski)
14318 Fix RTC year 2000 issue (Dominik Brodowski)
14320 Preclude multiple button proc entries (Eric Brunet)
14322 Moved arch-specific code out of include/platform/aclinux.h
14324 3) iASL Compiler Version X2044:
14326 Implemented error checking for the string used in the EISAID macro
14327 (Usually used in the definition of the _HID object.) The code now
14328 strictly enforces the PnP format - exactly 7 characters, 3
14329 uppercase letters and 4 hex digits.
14331 If a raw string is used in the definition of the _HID object
14332 (instead of the EISAID macro), the string must contain all
14333 alphanumeric characters (e.g., "*PNP0011" is not allowed because
14336 Implemented checking for invalid use of ACPI reserved names for
14337 most of the name creation operators (Name, Device, Event, Mutex,
14338 OperationRegion, PowerResource, Processor, and ThermalZone.)
14339 Previously, this check was only performed for control methods.
14341 Implemented an additional check on the Name operator to emit an
14342 error if a reserved name that must be implemented in ASL as a
14343 control method is used. We know that a reserved name must be a
14344 method if it is defined with input arguments.
14346 The warning emitted when a namespace object reference is not found
14347 during the cross reference phase has been changed into an error.
14348 The "External" directive should be used for names defined in other
14352 4) Tools and Utilities
14354 The 16-bit tools (adump16 and aexec16) have been regenerated and
14357 Fixed a problem with the output of both acpidump and adump16 where
14358 the indentation of closing parentheses and brackets was not
14360 aligned properly with the parent block.
14363 ----------------------------------------
14364 03 May 2002. Summary of changes for this release.
14367 1) ACPI CA Core Subsystem Version 20020503:
14369 Added support a new OSL interface that allows the host operating
14371 system software to override the DSDT found in the firmware -
14372 AcpiOsTableOverride. With this interface, the OSL can examine the
14373 version of the firmware DSDT and replace it with a different one
14376 Added new external interfaces for accessing ACPI registers from
14377 device drivers and other system software - AcpiGetRegister and
14378 AcpiSetRegister. This was simply an externalization of the
14379 existing AcpiHwBitRegister interfaces.
14381 Fixed a regression introduced in the previous build where the
14382 ASL/AML CreateField operator always returned an error,
14383 "destination must be a NS Node".
14385 Extended the maximum time (before failure) to successfully enable
14386 ACPI mode to 3 seconds.
14388 Code and Data Size: Current core subsystem library sizes are shown
14389 below. These are the code and data sizes for the acpica.lib
14390 produced by the Microsoft Visual C++ 6.0 compiler, and these
14391 values do not include any ACPI driver or OSPM code. The debug
14392 version of the code includes the debug output trace mechanism and
14393 has a larger code and data size. Note that these values will vary
14394 depending on the efficiency of the compiler and the compiler
14395 options used during generation.
14398 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14399 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14401 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14402 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14407 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
14408 free. While 3 out of 4 of our in-house systems work fine, the last
14409 one still hangs when testing the LAPIC timer.
14411 Renamed many files in 2.5 kernel release to omit "acpi_" from the
14414 Added warning on boot for Presario 711FR.
14416 Sleep improvements (Pavel Machek)
14418 ACPI can now be built without CONFIG_PCI enabled.
14420 IA64: Fixed memory map functions (JI Lee)
14423 3) iASL Compiler Version X2043:
14425 Added support to allow the compiler to be integrated into the MS
14426 VC++ development environment for one-button compilation of single
14427 files or entire projects -- with error-to-source-line mapping.
14429 Implemented support for compile-time constant folding for the
14430 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
14431 specification. This allows the ASL writer to use expressions
14432 instead of Integer/Buffer/String constants in terms that must
14433 evaluate to constants at compile time and will also simplify the
14434 emitted AML in any such sub-expressions that can be folded
14435 (evaluated at compile-time.) This increases the size of the
14436 compiler significantly because a portion of the ACPI CA AML
14437 interpreter is included within the compiler in order to pre-
14438 evaluate constant expressions.
14441 Fixed a problem with the "Unicode" ASL macro that caused the
14442 compiler to fault. (This macro is used in conjunction with the
14443 _STR reserved name.)
14445 Implemented an AML opcode optimization to use the Zero, One, and
14446 Ones opcodes where possible to further reduce the size of integer
14447 constants and thus reduce the overall size of the generated AML
14450 Implemented error checking for new reserved terms for ACPI version
14453 Implemented the -qr option to display the current list of ACPI
14454 reserved names known to the compiler.
14456 Implemented the -qc option to display the current list of ASL
14457 operators that are allowed within constant expressions and can
14458 therefore be folded at compile time if the operands are constants.
14463 Updated the Programmer's Reference for new interfaces, data types,
14464 and memory allocation model options.
14466 Updated the iASL Compiler User Reference to apply new format and
14467 add information about new features and options.
14469 ----------------------------------------
14470 19 April 2002. Summary of changes for this release.
14472 1) ACPI CA Core Subsystem Version 20020419:
14474 The source code base for the Core Subsystem has been completely
14475 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
14476 versions. The Lint option files used are included in the
14477 /acpi/generate/lint directory.
14479 Implemented enhanced status/error checking across the entire
14480 Hardware manager subsystem. Any hardware errors (reported from
14481 the OSL) are now bubbled up and will abort a running control
14485 Fixed a problem where the per-ACPI-table integer width (32 or 64)
14486 was stored only with control method nodes, causing a fault when
14487 non-control method code was executed during table loading. The
14488 solution implemented uses a global variable to indicate table
14489 width across the entire ACPI subsystem. Therefore, ACPI CA does
14490 not support mixed integer widths across different ACPI tables
14493 Fixed a problem where NULL extended fields (X fields) in an ACPI
14494 2.0 ACPI FADT caused the table load to fail. Although the
14495 existing ACPI specification is a bit fuzzy on this topic, the new
14496 behavior is to fall back on a ACPI 1.0 field if the corresponding
14497 ACPI 2.0 X field is zero (even though the table revision indicates
14498 a full ACPI 2.0 table.) The ACPI specification will be updated to
14499 clarify this issue.
14501 Fixed a problem with the SystemMemory operation region handler
14502 where memory was always accessed byte-wise even if the AML-
14503 specified access width was larger than a byte. This caused
14504 problems on systems with memory-mapped I/O. Memory is now
14505 accessed with the width specified. On systems that do not support
14506 non-aligned transfers, a check is made to guarantee proper address
14507 alignment before proceeding in order to avoid an AML-caused
14508 alignment fault within the kernel.
14511 Fixed a problem with the ExtendedIrq resource where only one byte
14512 of the 4-byte Irq field was extracted.
14514 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
14515 function was out of date and required a rewrite.
14517 Code and Data Size: Current core subsystem library sizes are shown
14518 below. These are the code and data sizes for the acpica.lib
14519 produced by the Microsoft Visual C++ 6.0 compiler, and these
14520 values do not include any ACPI driver or OSPM code. The debug
14521 version of the code includes the debug output trace mechanism and
14522 has a larger code and data size. Note that these values will vary
14523 depending on the efficiency of the compiler and the compiler
14524 options used during generation.
14527 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14528 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14530 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14531 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14536 PCI IRQ routing fixes (Dominik Brodowski)
14539 3) iASL Compiler Version X2042:
14541 Implemented an additional compile-time error check for a field
14542 unit whose size + minimum access width would cause a run-time
14543 access beyond the end-of-region. Previously, only the field size
14544 itself was checked.
14546 The Core subsystem and iASL compiler now share a common parse
14547 object in preparation for compile-time evaluation of the type
14548 3/4/5 ASL operators.
14551 ----------------------------------------
14552 Summary of changes for this release: 03_29_02
14554 1) ACPI CA Core Subsystem Version 20020329:
14556 Implemented support for late evaluation of TermArg operands to
14557 Buffer and Package objects. This allows complex expressions to be
14558 used in the declarations of these object types.
14560 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
14561 1.0, if the field was larger than 32 bits, it was returned as a
14562 buffer - otherwise it was returned as an integer. In ACPI 2.0,
14563 the field is returned as a buffer only if the field is larger than
14564 64 bits. The TableRevision is now considered when making this
14565 conversion to avoid incompatibility with existing ASL code.
14567 Implemented logical addressing for AcpiOsGetRootPointer. This
14568 allows an RSDP with either a logical or physical address. With
14569 this support, the host OS can now override all ACPI tables with
14570 one logical RSDP. Includes implementation of "typed" pointer
14571 support to allow a common data type for both physical and logical
14572 pointers internally. This required a change to the
14573 AcpiOsGetRootPointer interface.
14575 Implemented the use of ACPI 2.0 Generic Address Structures for all
14576 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
14577 mapped I/O for these ACPI features.
14579 Initialization now ignores not only non-required tables (All
14580 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
14581 not validate the table headers of unrecognized tables.
14583 Fixed a problem where a notify handler could only be
14584 installed/removed on an object of type Device. All "notify"
14586 objects are now supported -- Devices, Processor, Power, and
14589 Removed most verbosity from the ACPI_DB_INFO debug level. Only
14590 critical information is returned when this debug level is enabled.
14592 Code and Data Size: Current core subsystem library sizes are shown
14593 below. These are the code and data sizes for the acpica.lib
14594 produced by the Microsoft Visual C++ 6.0 compiler, and these
14595 values do not include any ACPI driver or OSPM code. The debug
14596 version of the code includes the debug output trace mechanism and
14597 has a larger code and data size. Note that these values will vary
14598 depending on the efficiency of the compiler and the compiler
14599 options used during generation.
14602 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14603 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14605 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14606 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14611 The processor driver (acpi_processor.c) now fully supports ACPI
14612 2.0-based processor performance control (e.g. Intel(R)
14613 SpeedStep(TM) technology) Note that older laptops that only have
14614 the Intel "applet" interface are not supported through this. The
14615 'limit' and 'performance' interface (/proc) are fully functional.
14616 [Note that basic policy for controlling performance state
14617 transitions will be included in the next version of ospmd.] The
14618 idle handler was modified to more aggressively use C2, and PIIX4
14619 errata handling underwent a complete overhaul (big thanks to
14620 Dominik Brodowski).
14622 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
14623 based devices in the ACPI namespace are now dynamically bound
14624 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
14625 This allows, among other things, ACPI to resolve bus numbers for
14626 subordinate PCI bridges.
14628 Enhanced PCI IRQ routing to get the proper bus number for _PRT
14629 entries defined underneath PCI bridges.
14631 Added IBM 600E to bad bios list due to invalid _ADR value for
14632 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
14634 In the process of adding full MADT support (e.g. IOAPIC) for IA32
14635 (acpi.c, mpparse.c) -- stay tuned.
14637 Added back visual differentiation between fixed-feature and
14638 control-method buttons in dmesg. Buttons are also subtyped (e.g.
14639 button/power/PWRF) to simplify button identification.
14641 We no longer use -Wno-unused when compiling debug. Please ignore
14642 any "_THIS_MODULE defined but not used" messages.
14644 Can now shut down the system using "magic sysrq" key.
14647 3) iASL Compiler version 2041:
14649 Fixed a problem where conversion errors for hex/octal/decimal
14650 constants were not reported.
14652 Implemented a fix for the General Register template Address field.
14653 This field was 8 bits when it should be 64.
14655 Fixed a problem where errors/warnings were no longer being emitted
14656 within the listing output file.
14658 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
14659 exactly 4 characters, alphanumeric only.
14664 ----------------------------------------
14665 Summary of changes for this release: 03_08_02
14668 1) ACPI CA Core Subsystem Version 20020308:
14670 Fixed a problem with AML Fields where the use of the "AccessAny"
14671 keyword could cause an interpreter error due to attempting to read
14672 or write beyond the end of the parent Operation Region.
14674 Fixed a problem in the SystemMemory Operation Region handler where
14675 an attempt was made to map memory beyond the end of the region.
14676 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
14677 errors on some Linux systems.
14679 Fixed a problem where the interpreter/namespace "search to root"
14680 algorithm was not functioning for some object types. Relaxed the
14681 internal restriction on the search to allow upsearches for all
14682 external object types as well as most internal types.
14687 We now use safe_halt() macro versus individual calls to sti | hlt.
14689 Writing to the processor limit interface should now work. "echo 1"
14690 will increase the limit, 2 will decrease, and 0 will reset to the
14697 Fixed segfault on Linux version.
14700 ----------------------------------------
14701 Summary of changes for this release: 02_25_02
14703 1) ACPI CA Core Subsystem:
14706 Fixed a problem where the GPE bit masks were not initialized
14707 properly, causing erratic GPE behavior.
14709 Implemented limited support for multiple calling conventions. The
14710 code can be generated with either the VPL (variable parameter
14711 list, or "C") convention, or the FPL (fixed parameter list, or
14712 "Pascal") convention. The core subsystem is about 3.4% smaller
14713 when generated with FPL.
14718 Re-add some /proc/acpi/event functionality that was lost during
14721 Resolved issue with /proc events for fixed-feature buttons showing
14722 up as the system device.
14724 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
14726 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
14728 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
14730 Fixed limit interface & usage to fix bugs with passive cooling
14733 Restructured PRT support.
14736 ----------------------------------------
14737 Summary of changes for this label: 02_14_02
14740 1) ACPI CA Core Subsystem:
14742 Implemented support in AcpiLoadTable to allow loading of FACS and
14745 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
14746 been removed. All 64-bit platforms should be migrated to the ACPI
14747 2.0 tables. The actbl71.h header has been removed from the source
14750 All C macros defined within the subsystem have been prefixed with
14751 "ACPI_" to avoid collision with other system include files.
14753 Removed the return value for the two AcpiOsPrint interfaces, since
14754 it is never used and causes lint warnings for ignoring the return
14757 Added error checking to all internal mutex acquire and release
14758 calls. Although a failure from one of these interfaces is
14759 probably a fatal system error, these checks will cause the
14760 immediate abort of the currently executing method or interface.
14762 Fixed a problem where the AcpiSetCurrentResources interface could
14763 fault. This was a side effect of the deployment of the new memory
14766 Fixed a couple of problems with the Global Lock support introduced
14767 in the last major build. The "common" (1.0/2.0) internal FACS was
14768 being overwritten with the FACS signature and clobbering the
14769 Global Lock pointer. Also, the actual firmware FACS was being
14770 unmapped after construction of the "common" FACS, preventing
14771 access to the actual Global Lock field within it. The "common"
14772 internal FACS is no longer installed as an actual ACPI table; it
14773 is used simply as a global.
14775 Code and Data Size: Current core subsystem library sizes are shown
14776 below. These are the code and data sizes for the acpica.lib
14777 produced by the Microsoft Visual C++ 6.0 compiler, and these
14778 values do not include any ACPI driver or OSPM code. The debug
14779 version of the code includes the debug output trace mechanism and
14780 has a larger code and data size. Note that these values will vary
14781 depending on the efficiency of the compiler and the compiler
14782 options used during generation.
14784 Previous Release (02_07_01)
14785 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14786 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14788 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14789 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14794 Updated Linux-specific code for core macro and OSL interface
14795 changes described above.
14797 Improved /proc/acpi/event. It now can be opened only once and has
14798 proper poll functionality.
14800 Fixed and restructured power management (acpi_bus).
14802 Only create /proc "view by type" when devices of that class exist.
14804 Fixed "charging/discharging" bug (and others) in acpi_battery.
14806 Improved thermal zone code.
14809 3) ASL Compiler, version X2039:
14812 Implemented the new compiler restriction on ASL String hex/octal
14813 escapes to non-null, ASCII values. An error results if an invalid
14814 value is used. (This will require an ACPI 2.0 specification
14817 AML object labels that are output to the optional C and ASM source
14818 are now prefixed with both the ACPI table signature and table ID
14819 to help guarantee uniqueness within a large BIOS project.
14822 ----------------------------------------
14823 Summary of changes for this label: 02_01_02
14825 1) ACPI CA Core Subsystem:
14827 ACPI 2.0 support is complete in the entire Core Subsystem and the
14828 ASL compiler. All new ACPI 2.0 operators are implemented and all
14829 other changes for ACPI 2.0 support are complete. With
14830 simultaneous code and data optimizations throughout the subsystem,
14831 ACPI 2.0 support has been implemented with almost no additional
14832 cost in terms of code and data size.
14834 Implemented a new mechanism for allocation of return buffers. If
14835 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
14836 be allocated on behalf of the caller. Consolidated all return
14837 buffer validation and allocation to a common procedure. Return
14838 buffers will be allocated via the primary OSL allocation interface
14839 since it appears that a separate pool is not needed by most users.
14840 If a separate pool is required for these buffers, the caller can
14841 still use the original mechanism and pre-allocate the buffer(s).
14843 Implemented support for string operands within the DerefOf
14846 Restructured the Hardware and Event managers to be table driven,
14847 simplifying the source code and reducing the amount of generated
14850 Split the common read/write low-level ACPI register bitfield
14851 procedure into a separate read and write, simplifying the code
14854 Obsoleted the AcpiOsCallocate OSL interface. This interface was
14855 used only a handful of times and didn't have enough critical mass
14856 for a separate interface. Replaced with a common calloc procedure
14859 Fixed a reported problem with the GPE number mapping mechanism
14860 that allows GPE1 numbers to be non-contiguous with GPE0.
14861 Reorganized the GPE information and shrunk a large array that was
14862 originally large enough to hold info for all possible GPEs (256)
14863 to simply large enough to hold all GPEs up to the largest GPE
14864 number on the machine.
14866 Fixed a reported problem with resource structure alignment on 64-
14869 Changed the AcpiEnableEvent and AcpiDisableEvent external
14870 interfaces to not require any flags for the common case of
14871 enabling/disabling a GPE.
14873 Implemented support to allow a "Notify" on a Processor object.
14875 Most TBDs in comments within the source code have been resolved
14879 Fixed a problem in the interpreter where a standalone parent
14880 prefix (^) was not handled correctly in the interpreter and
14883 Removed obsolete and unnecessary GPE save/restore code.
14885 Implemented Field support in the ASL Load operator. This allows a
14886 table to be loaded from a named field, in addition to loading a
14887 table directly from an Operation Region.
14889 Implemented timeout and handle support in the external Global Lock
14892 Fixed a problem in the AcpiDump utility where pathnames were no
14893 longer being generated correctly during the dump of named objects.
14895 Modified the AML debugger to give a full display of if/while
14896 predicates instead of just one AML opcode at a time. (The
14897 predicate can have several nested ASL statements.) The old method
14898 was confusing during single stepping.
14900 Code and Data Size: Current core subsystem library sizes are shown
14901 below. These are the code and data sizes for the acpica.lib
14902 produced by the Microsoft Visual C++ 6.0 compiler, and these
14903 values do not include any ACPI driver or OSPM code. The debug
14904 version of the code includes the debug output trace mechanism and
14905 has a larger code and data size. Note that these values will vary
14906 depending on the efficiency of the compiler and the compiler
14907 options used during generation.
14909 Previous Release (12_18_01)
14910 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14911 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14913 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14914 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14918 Implemented fix for PIIX reverse throttling errata (Processor
14921 Added new Limit interface (Processor and Thermal drivers)
14923 New thermal policy (Thermal driver)
14925 Many updates to /proc
14927 Battery "low" event support (Battery driver)
14929 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
14931 IA32 - IA64 initialization unification, no longer experimental
14933 Menuconfig options redesigned
14935 3) ASL Compiler, version X2037:
14937 Implemented several new output features to simplify integration of
14938 AML code into firmware: 1) Output the AML in C source code with
14939 labels for each named ASL object. The original ASL source code
14940 is interleaved as C comments. 2) Output the AML in ASM source code
14941 with labels and interleaved ASL source. 3) Output the AML in
14942 raw hex table form, in either C or ASM.
14944 Implemented support for optional string parameters to the
14945 LoadTable operator.
14947 Completed support for embedded escape sequences within string
14948 literals. The compiler now supports all single character escapes
14949 as well as the Octal and Hex escapes. Note: the insertion of a
14950 null byte into a string literal (via the hex/octal escape) causes
14951 the string to be immediately terminated. A warning is issued.
14953 Fixed a problem where incorrect AML was generated for the case
14954 where an ASL namepath consists of a single parent prefix (
14956 ) with no trailing name segments.
14958 The compiler has been successfully generated with a 64-bit C
14964 ----------------------------------------
14965 Summary of changes for this label: 12_18_01
14969 Enhanced blacklist with reason and severity fields. Any table's
14970 signature may now be used to identify a blacklisted system.
14972 Call _PIC control method to inform the firmware which interrupt
14973 model the OS is using. Turn on any disabled link devices.
14975 Cleaned up busmgr /proc error handling (Andreas Dilger)
14977 2) ACPI CA Core Subsystem:
14979 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
14982 Completed implementation of the ACPI 2.0 "Continue",
14983 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
14984 operators. All new ACPI 2.0 operators are now implemented in both
14985 the ASL compiler and the AML interpreter. The only remaining ACPI
14986 2.0 task is support for the String data type in the DerefOf
14987 operator. Fixed a problem with AcquireMutex where the status code
14988 was lost if the caller had to actually wait for the mutex.
14990 Increased the maximum ASL Field size from 64K bits to 4G bits.
14992 Completed implementation of the external Global Lock interfaces --
14993 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
14994 Handler parameters were added.
14996 Completed another pass at removing warnings and issues when
14997 compiling with 64-bit compilers. The code now compiles cleanly
14998 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
14999 add and subtract (diff) macros have changed considerably.
15002 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
15003 64-bit platforms, 32-bits on all others. This type is used
15004 wherever memory allocation and/or the C sizeof() operator is used,
15005 and affects the OSL memory allocation interfaces AcpiOsAllocate
15006 and AcpiOsCallocate.
15008 Implemented sticky user breakpoints in the AML debugger.
15010 Code and Data Size: Current core subsystem library sizes are shown
15011 below. These are the code and data sizes for the acpica.lib
15012 produced by the Microsoft Visual C++ 6.0 compiler, and these
15013 values do not include any ACPI driver or OSPM code. The debug
15014 version of the code includes the debug output trace mechanism and
15015 has a larger code and data size. Note that these values will vary
15016 depending on the efficiency of the compiler and the compiler
15017 options used during generation.
15019 Previous Release (12_05_01)
15020 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15021 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15023 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15024 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15026 3) ASL Compiler, version X2034:
15028 Now checks for (and generates an error if detected) the use of a
15029 Break or Continue statement without an enclosing While statement.
15032 Successfully generated the compiler with the Intel 64-bit C
15035 ----------------------------------------
15036 Summary of changes for this label: 12_05_01
15038 1) ACPI CA Core Subsystem:
15040 The ACPI 2.0 CopyObject operator is fully implemented. This
15041 operator creates a new copy of an object (and is also used to
15042 bypass the "implicit conversion" mechanism of the Store operator.)
15044 The ACPI 2.0 semantics for the SizeOf operator are fully
15045 implemented. The change is that performing a SizeOf on a
15046 reference object causes an automatic dereference of the object to
15047 tha actual value before the size is evaluated. This behavior was
15048 undefined in ACPI 1.0.
15050 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
15051 have been implemented. The interrupt polarity and mode are now
15054 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
15055 appearing in Package objects were not properly converted to
15056 integers when the internal Package was converted to an external
15057 object (via the AcpiEvaluateObject interface.)
15059 Fixed a problem with the namespace object deletion mechanism for
15060 objects created by control methods. There were two parts to this
15061 problem: 1) Objects created during the initialization phase method
15062 parse were not being deleted, and 2) The object owner ID mechanism
15063 to track objects was broken.
15065 Fixed a problem where the use of the ASL Scope operator within a
15066 control method would result in an invalid opcode exception.
15068 Fixed a problem introduced in the previous label where the buffer
15069 length required for the _PRT structure was not being returned
15072 Code and Data Size: Current core subsystem library sizes are shown
15073 below. These are the code and data sizes for the acpica.lib
15074 produced by the Microsoft Visual C++ 6.0 compiler, and these
15075 values do not include any ACPI driver or OSPM code. The debug
15076 version of the code includes the debug output trace mechanism and
15077 has a larger code and data size. Note that these values will vary
15078 depending on the efficiency of the compiler and the compiler
15079 options used during generation.
15081 Previous Release (11_20_01)
15082 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15083 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15086 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15087 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15091 Updated all files to apply cleanly against 2.4.16.
15093 Added basic PCI Interrupt Routing Table (PRT) support for IA32
15094 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
15095 version supports both static and dyanmic PRT entries, but dynamic
15096 entries are treated as if they were static (not yet
15097 reconfigurable). Architecture- specific code to use this data is
15098 absent on IA32 but should be available shortly.
15100 Changed the initialization sequence to start the ACPI interpreter
15101 (acpi_init) prior to initialization of the PCI driver (pci_init)
15102 in init/main.c. This ordering is required to support PRT and
15103 facilitate other (future) enhancement. A side effect is that the
15104 ACPI bus driver and certain device drivers can no longer be loaded
15107 Modified the 'make menuconfig' options to allow PCI Interrupt
15108 Routing support to be included without the ACPI Bus and other
15111 3) ASL Compiler, version X2033:
15113 Fixed some issues with the use of the new CopyObject and
15114 DataTableRegion operators. Both are fully functional.
15116 ----------------------------------------
15117 Summary of changes for this label: 11_20_01
15119 20 November 2001. Summary of changes for this release.
15121 1) ACPI CA Core Subsystem:
15123 Updated Index support to match ACPI 2.0 semantics. Storing a
15124 Integer, String, or Buffer to an Index of a Buffer will store only
15125 the least-significant byte of the source to the Indexed buffer
15126 byte. Multiple writes are not performed.
15128 Fixed a problem where the access type used in an AccessAs ASL
15129 operator was not recorded correctly into the field object.
15131 Fixed a problem where ASL Event objects were created in a
15132 signalled state. Events are now created in an unsignalled state.
15134 The internal object cache is now purged after table loading and
15135 initialization to reduce the use of dynamic kernel memory -- on
15136 the assumption that object use is greatest during the parse phase
15137 of the entire table (versus the run-time use of individual control
15140 ACPI 2.0 variable-length packages are now fully operational.
15142 Code and Data Size: Code and Data optimizations have permitted new
15143 feature development with an actual reduction in the library size.
15144 Current core subsystem library sizes are shown below. These are
15145 the code and data sizes for the acpica.lib produced by the
15146 Microsoft Visual C++ 6.0 compiler, and these values do not include
15147 any ACPI driver or OSPM code. The debug version of the code
15148 includes the debug output trace mechanism and has a larger code
15149 and data size. Note that these values will vary depending on the
15150 efficiency of the compiler and the compiler options used during
15153 Previous Release (11_09_01):
15154 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15155 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15158 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15159 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15163 Enhanced the ACPI boot-time initialization code to allow the use
15164 of Local APIC tables for processor enumeration on IA-32, and to
15165 pave the way for a fully MPS-free boot (on SMP systems) in the
15166 near future. This functionality replaces
15167 arch/i386/kernel/acpitables.c, which was introduced in an earlier
15168 2.4.15-preX release. To enable this feature you must add
15169 "acpi_boot=on" to the kernel command line -- see the help entry
15170 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
15173 Restructured the configuration options to allow boot-time table
15174 parsing support without inclusion of the ACPI Interpreter (and
15177 NOTE: This release does not include fixes for the reported events,
15178 power-down, and thermal passive cooling issues (coming soon).
15182 Added additional typechecking for Fields within restricted access
15183 Operation Regions. All fields within EC and CMOS regions must be
15184 declared with ByteAcc. All fields withing SMBus regions must be
15185 declared with the BufferAcc access type.
15187 Fixed a problem where the listing file output of control methods
15188 no longer interleaved the actual AML code with the ASL source
15194 ----------------------------------------
15195 Summary of changes for this label: 11_09_01
15197 1) ACPI CA Core Subsystem:
15199 Implemented ACPI 2.0-defined support for writes to fields with a
15200 Buffer, String, or Integer source operand that is smaller than the
15201 target field. In these cases, the source operand is zero-extended
15202 to fill the target field.
15204 Fixed a problem where a Field starting bit offset (within the
15205 parent operation region) was calculated incorrectly if the
15207 alignment of the field differed from the access width. This
15208 affected CreateWordField, CreateDwordField, CreateQwordField, and
15209 possibly other fields that use the "AccessAny" keyword.
15211 Fixed a problem introduced in the 11_02_01 release where indirect
15212 stores through method arguments did not operate correctly.
15216 Implemented boot-time ACPI table parsing support
15217 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
15218 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
15219 legacy BIOS interfaces (e.g. MPS) for the configuration of system
15220 processors, memory, and interrupts during setup_arch(). Note that
15221 this patch does not include the required architecture-specific
15222 changes required to apply this information -- subsequent patches
15223 will be posted for both IA32 and IA64 to achieve this.
15225 Added low-level sleep support for IA32 platforms, courtesy of Pat
15226 Mochel. This allows IA32 systems to transition to/from various
15227 sleeping states (e.g. S1, S3), although the lack of a centralized
15228 driver model and power-manageable drivers will prevent its
15229 (successful) use on most systems.
15231 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
15232 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
15233 tables" option, etc.
15235 Increased the default timeout for the EC driver from 1ms to 10ms
15236 (1000 cycles of 10us) to try to address AE_TIME errors during EC
15239 ----------------------------------------
15240 Summary of changes for this label: 11_02_01
15242 1) ACPI CA Core Subsystem:
15244 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
15245 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
15248 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
15249 changes to support ACPI 2.0 Qword field access. Read/Write
15250 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
15251 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
15252 the value parameter for the address space handler interface is now
15253 an ACPI_INTEGER. OSL implementations of these interfaces must now
15254 handle the case where the Width parameter is 64.
15256 Index Fields: Fixed a problem where unaligned bit assembly and
15257 disassembly for IndexFields was not supported correctly.
15259 Index and Bank Fields: Nested Index and Bank Fields are now
15260 supported. During field access, a check is performed to ensure
15261 that the value written to an Index or Bank register is not out of
15262 the range of the register. The Index (or Bank) register is
15263 written before each access to the field data. Future support will
15264 include allowing individual IndexFields to be wider than the
15265 DataRegister width.
15267 Fields: Fixed a problem where the AML interpreter was incorrectly
15268 attempting to write beyond the end of a Field/OpRegion. This was
15269 a boundary case that occurred when a DWORD field was written to a
15270 BYTE access OpRegion, forcing multiple writes and causing the
15271 interpreter to write one datum too many.
15273 Fields: Fixed a problem with Field/OpRegion access where the
15274 starting bit address of a field was incorrectly calculated if the
15275 current access type was wider than a byte (WordAcc, DwordAcc, or
15278 Fields: Fixed a problem where forward references to individual
15279 FieldUnits (individual Field names within a Field definition) were
15280 not resolved during the AML table load.
15282 Fields: Fixed a problem where forward references from a Field
15283 definition to the parent Operation Region definition were not
15284 resolved during the AML table load.
15286 Fields: Duplicate FieldUnit names within a scope are now detected
15287 during AML table load.
15289 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
15290 returned an incorrect name for the root node.
15292 Code and Data Size: Code and Data optimizations have permitted new
15293 feature development with an actual reduction in the library size.
15294 Current core subsystem library sizes are shown below. These are
15295 the code and data sizes for the acpica.lib produced by the
15296 Microsoft Visual C++ 6.0 compiler, and these values do not include
15297 any ACPI driver or OSPM code. The debug version of the code
15298 includes the debug output trace mechanism and has a larger code
15299 and data size. Note that these values will vary depending on the
15300 efficiency of the compiler and the compiler options used during
15303 Previous Release (10_18_01):
15304 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15305 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15308 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15309 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15313 Improved /proc processor output (Pavel Machek) Re-added
15314 MODULE_LICENSE("GPL") to all modules.
15316 3) ASL Compiler version X2030:
15318 Duplicate FieldUnit names within a scope are now detected and
15323 Programmer Reference updated to reflect OSL and address space
15324 handler interface changes described above.
15326 ----------------------------------------
15327 Summary of changes for this label: 10_18_01
15329 ACPI CA Core Subsystem:
15331 Fixed a problem with the internal object reference count mechanism
15332 that occasionally caused premature object deletion. This resolves
15333 all of the outstanding problem reports where an object is deleted
15334 in the middle of an interpreter evaluation. Although this problem
15335 only showed up in rather obscure cases, the solution to the
15336 problem involved an adjustment of all reference counts involving
15337 objects attached to namespace nodes.
15339 Fixed a problem with Field support in the interpreter where
15340 writing to an aligned field whose length is an exact multiple (2
15341 or greater) of the field access granularity would cause an attempt
15342 to write beyond the end of the field.
15344 The top level AML opcode execution functions within the
15345 interpreter have been renamed with a more meaningful and
15346 consistent naming convention. The modules exmonad.c and
15347 exdyadic.c were eliminated. New modules are exoparg1.c,
15348 exoparg2.c, exoparg3.c, and exoparg6.c.
15350 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
15352 Fixed a problem where the AML debugger was causing some internal
15353 objects to not be deleted during subsystem termination.
15355 Fixed a problem with the external AcpiEvaluateObject interface
15356 where the subsystem would fault if the named object to be
15357 evaluated refered to a constant such as Zero, Ones, etc.
15359 Fixed a problem with IndexFields and BankFields where the
15360 subsystem would fault if the index, data, or bank registers were
15361 not defined in the same scope as the field itself.
15363 Added printf format string checking for compilers that support
15364 this feature. Corrected more than 50 instances of issues with
15365 format specifiers within invocations of ACPI_DEBUG_PRINT
15366 throughout the core subsystem code.
15368 The ASL "Revision" operator now returns the ACPI support level
15369 implemented in the core - the value "2" since the ACPI 2.0 support
15370 is more than 50% implemented.
15372 Enhanced the output of the AML debugger "dump namespace" command
15373 to output in a more human-readable form.
15375 Current core subsystem library code sizes are shown below. These
15377 are the code and data sizes for the acpica.lib produced by the
15378 Microsoft Visual C++ 6.0 compiler, and these values do not include
15379 any ACPI driver or OSPM code. The debug version of the code
15380 includes the full debug trace mechanism -- leading to a much
15382 larger code and data size. Note that these values will vary
15383 depending on the efficiency of the compiler and the compiler
15384 options used during generation.
15386 Previous Label (09_20_01):
15387 Non-Debug Version: 65K Code, 5K Data, 70K Total
15388 Debug Version: 138K Code, 58K Data, 196K Total
15392 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15393 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15397 Implemented a "Bad BIOS Blacklist" to track machines that have
15398 known ASL/AML problems.
15400 Enhanced the /proc interface for the thermal zone driver and added
15401 support for _HOT (the critical suspend trip point). The 'info'
15402 file now includes threshold/policy information, and allows setting
15403 of _SCP (cooling preference) and _TZP (polling frequency) values
15404 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
15405 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
15406 preference to the passive/quiet mode (if supported by the ASL).
15408 Implemented a workaround for a gcc bug that resuted in an OOPs
15409 when loading the control method battery driver.
15411 ----------------------------------------
15412 Summary of changes for this label: 09_20_01
15414 ACPI CA Core Subsystem:
15416 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
15417 modified to allow individual GPE levels to be flagged as wake-
15418 enabled (i.e., these GPEs are to remain enabled when the platform
15421 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
15422 support wake-enabled GPEs. This means that upon entering the
15423 sleep state, all GPEs that are not wake-enabled are disabled.
15424 When leaving the sleep state, these GPEs are reenabled.
15426 A local double-precision divide/modulo module has been added to
15427 enhance portability to OS kernels where a 64-bit math library is
15428 not available. The new module is "utmath.c".
15430 Several optimizations have been made to reduce the use of CPU
15431 stack. Originally over 2K, the maximum stack usage is now below
15432 2K at 1860 bytes (1.82k)
15434 Fixed a problem with the AcpiGetFirmwareTable interface where the
15435 root table pointer was not mapped into a logical address properly.
15437 Fixed a problem where a NULL pointer was being dereferenced in the
15438 interpreter code for the ASL Notify operator.
15440 Fixed a problem where the use of the ASL Revision operator
15441 returned an error. This operator now returns the current version
15442 of the ACPI CA core subsystem.
15444 Fixed a problem where objects passed as control method parameters
15445 to AcpiEvaluateObject were always deleted at method termination.
15446 However, these objects may end up being stored into the namespace
15447 by the called method. The object reference count mechanism was
15448 applied to these objects instead of a force delete.
15450 Fixed a problem where static strings or buffers (contained in the
15451 AML code) that are declared as package elements within the ASL
15452 code could cause a fault because the interpreter would attempt to
15453 delete them. These objects are now marked with the "static
15454 object" flag to prevent any attempt to delete them.
15456 Implemented an interpreter optimization to use operands directly
15457 from the state object instead of extracting the operands to local
15458 variables. This reduces stack use and code size, and improves
15461 The module exxface.c was eliminated as it was an unnecessary extra
15464 Current core subsystem library code sizes are shown below. These
15465 are the code and data sizes for the acpica.lib produced by the
15466 Microsoft Visual C++ 6.0 compiler, and these values do not include
15467 any ACPI driver or OSPM code. The debug version of the code
15468 includes the full debug trace mechanism -- leading to a much
15469 larger code and data size. Note that these values will vary
15470 depending on the efficiency of the compiler and the compiler
15471 options used during generation.
15473 Non-Debug Version: 65K Code, 5K Data, 70K Total
15474 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
15475 Total (Previously 195K)
15479 Support for ACPI 2.0 64-bit integers has been added. All ACPI
15480 Integer objects are now 64 bits wide
15482 All Acpi data types and structures are now in lower case. Only
15483 Acpi macros are upper case for differentiation.
15487 Changes to the external interfaces as described above.
15489 ----------------------------------------
15490 Summary of changes for this label: 08_31_01
15492 ACPI CA Core Subsystem:
15494 A bug with interpreter implementation of the ASL Divide operator
15495 was found and fixed. The implicit function return value (not the
15496 explicit store operands) was returning the remainder instead of
15497 the quotient. This was a longstanding bug and it fixes several
15498 known outstanding issues on various platforms.
15500 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
15501 been further optimized for size. There are 700 invocations of the
15502 DEBUG_PRINT macro alone, so each optimization reduces the size of
15503 the debug version of the subsystem significantly.
15505 A stack trace mechanism has been implemented. The maximum stack
15506 usage is about 2K on 32-bit platforms. The debugger command "stat
15507 stack" will display the current maximum stack usage.
15509 All public symbols and global variables within the subsystem are
15510 now prefixed with the string "Acpi". This keeps all of the
15511 symbols grouped together in a kernel map, and avoids conflicts
15512 with other kernel subsystems.
15514 Most of the internal fixed lookup tables have been moved into the
15515 code segment via the const operator.
15517 Several enhancements have been made to the interpreter to both
15518 reduce the code size and improve performance.
15520 Current core subsystem library code sizes are shown below. These
15521 are the code and data sizes for the acpica.lib produced by the
15522 Microsoft Visual C++ 6.0 compiler, and these values do not include
15523 any ACPI driver or OSPM code. The debug version of the code
15524 includes the full debug trace mechanism which contains over 700
15525 invocations of the DEBUG_PRINT macro, 500 function entry macro
15526 invocations, and over 900 function exit macro invocations --
15527 leading to a much larger code and data size. Note that these
15528 values will vary depending on the efficiency of the compiler and
15529 the compiler options used during generation.
15531 Non-Debug Version: 64K Code, 5K Data, 69K Total
15532 Debug Version: 137K Code, 58K Data, 195K Total
15536 Implemented wbinvd() macro, pending a kernel-wide definition.
15538 Fixed /proc/acpi/event to handle poll() and short reads.
15540 ASL Compiler, version X2026:
15542 Fixed a problem introduced in the previous label where the AML
15544 code emitted for package objects produced packages with zero
15547 ----------------------------------------
15548 Summary of changes for this label: 08_16_01
15550 ACPI CA Core Subsystem:
15552 The following ACPI 2.0 ASL operators have been implemented in the
15553 AML interpreter (These are already supported by the Intel ASL
15554 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
15555 ToBuffer. Support for 64-bit AML constants is implemented in the
15556 AML parser, debugger, and disassembler.
15558 The internal memory tracking mechanism (leak detection code) has
15559 been upgraded to reduce the memory overhead (a separate tracking
15560 block is no longer allocated for each memory allocation), and now
15561 supports all of the internal object caches.
15563 The data structures and code for the internal object caches have
15564 been coelesced and optimized so that there is a single cache and
15565 memory list data structure and a single group of functions that
15566 implement generic cache management. This has reduced the code
15567 size in both the debug and release versions of the subsystem.
15569 The DEBUG_PRINT macro(s) have been optimized for size and replaced
15570 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
15571 different, because it generates a single call to an internal
15572 function. This results in a savings of about 90 bytes per
15573 invocation, resulting in an overall code and data savings of about
15574 16% in the debug version of the subsystem.
15578 Fixed C3 disk corruption problems and re-enabled C3 on supporting
15581 Integrated low-level sleep code by Patrick Mochel.
15583 Further tweaked source code Linuxization.
15589 Support for ACPI 2.0 variable length packages is fixed/completed.
15591 Fixed a problem where the optional length parameter for the ACPI
15592 2.0 ToString operator.
15594 Fixed multiple extraneous error messages when a syntax error is
15595 detected within the declaration line of a control method.
15597 ----------------------------------------
15598 Summary of changes for this label: 07_17_01
15600 ACPI CA Core Subsystem:
15602 Added a new interface named AcpiGetFirmwareTable to obtain any
15603 ACPI table via the ACPI signature. The interface can be called at
15604 any time during kernel initialization, even before the kernel
15605 virtual memory manager is initialized and paging is enabled. This
15606 allows kernel subsystems to obtain ACPI tables very early, even
15607 before the ACPI CA subsystem is initialized.
15609 Fixed a problem where Fields defined with the AnyAcc attribute
15610 could be resolved to the incorrect address under the following
15611 conditions: 1) the field width is larger than 8 bits and 2) the
15612 parent operation region is not defined on a DWORD boundary.
15614 Fixed a problem where the interpreter is not being locked during
15615 namespace initialization (during execution of the _INI control
15616 methods), causing an error when an attempt is made to release it
15619 ACPI 2.0 support in the AML Interpreter has begun and will be
15620 ongoing throughout the rest of this year. In this label, The Mod
15621 operator is implemented.
15623 Added a new data type to contain full PCI addresses named
15624 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
15625 and Function values.
15629 Enhanced the Linux version of the source code to change most
15630 capitalized ACPI type names to lowercase. For example, all
15631 instances of ACPI_STATUS are changed to acpi_status. This will
15632 result in a large diff, but the change is strictly cosmetic and
15633 aligns the CA code closer to the Linux coding standard.
15637 The interfaces to the PCI configuration space have been changed to
15638 add the PCI Segment number and to split the single 32-bit combined
15639 DeviceFunction field into two 16-bit fields. This was
15640 accomplished by moving the four values that define an address in
15641 PCI configuration space (segment, bus, device, and function) to
15642 the new ACPI_PCI_ID structure.
15644 The changes to the PCI configuration space interfaces led to a
15645 reexamination of the complete set of address space access
15646 interfaces for PCI, I/O, and Memory. The previously existing 18
15647 interfaces have proven difficult to maintain (any small change
15648 must be propagated across at least 6 interfaces) and do not easily
15649 allow for future expansion to 64 bits if necessary. Also, on some
15650 systems, it would not be appropriate to demultiplex the access
15651 width (8, 16, 32,or 64) before calling the OSL if the
15652 corresponding native OS interfaces contain a similar access width
15653 parameter. For these reasons, the 18 address space interfaces
15654 have been replaced by these 6 new ones:
15656 AcpiOsReadPciConfiguration
15657 AcpiOsWritePciConfiguration
15663 Added a new interface named AcpiOsGetRootPointer to allow the OSL
15664 to perform the platform and/or OS-specific actions necessary to
15665 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
15666 interface will simply call down to the CA core to perform the low-
15667 memory search for the table. On IA-64, the RSDP is obtained from
15668 EFI. Migrating this interface to the OSL allows the CA core to
15670 remain OS and platform independent.
15672 Added a new interface named AcpiOsSignal to provide a generic
15673 "function code and pointer" interface for various miscellaneous
15674 signals and notifications that must be made to the host OS. The
15675 first such signals are intended to support the ASL Fatal and
15676 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
15677 interface has been obsoleted.
15679 The definition of the AcpiFormatException interface has been
15680 changed to simplify its use. The caller no longer must supply a
15681 buffer to the call; A pointer to a const string is now returned
15682 directly. This allows the call to be easily used in printf
15683 statements, etc. since the caller does not have to manage a local
15687 ASL Compiler, Version X2025:
15689 The ACPI 2.0 Switch/Case/Default operators have been implemented
15690 and are fully functional. They will work with all ACPI 1.0
15691 interpreters, since the operators are simply translated to If/Else
15694 The ACPI 2.0 ElseIf operator is implemented and will also work
15695 with 1.0 interpreters, for the same reason.
15697 Implemented support for ACPI 2.0 variable-length packages. These
15698 packages have a separate opcode, and their size is determined by
15699 the interpreter at run-time.
15701 Documentation The ACPI CA Programmer Reference has been updated to
15702 reflect the new interfaces and changes to existing interfaces.
15704 ------------------------------------------
15705 Summary of changes for this label: 06_15_01
15707 ACPI CA Core Subsystem:
15709 Fixed a problem where a DWORD-accessed field within a Buffer
15710 object would get its byte address inadvertently rounded down to
15711 the nearest DWORD. Buffers are always Byte-accessible.
15713 ASL Compiler, version X2024:
15715 Fixed a problem where the Switch() operator would either fault or
15716 hang the compiler. Note however, that the AML code for this ACPI
15717 2.0 operator is not yet implemented.
15719 Compiler uses the new AcpiOsGetTimer interface to obtain compile
15722 Implementation of the CreateField operator automatically converts
15723 a reference to a named field within a resource descriptor from a
15724 byte offset to a bit offset if required.
15726 Added some missing named fields from the resource descriptor
15727 support. These are the names that are automatically created by the
15728 compiler to reference fields within a descriptor. They are only
15729 valid at compile time and are not passed through to the AML
15732 Resource descriptor named fields are now typed as Integers and
15733 subject to compile-time typechecking when used in expressions.
15735 ------------------------------------------
15736 Summary of changes for this label: 05_18_01
15738 ACPI CA Core Subsystem:
15740 Fixed a couple of problems in the Field support code where bits
15741 from adjacent fields could be returned along with the proper field
15742 bits. Restructured the field support code to improve performance,
15743 readability and maintainability.
15745 New DEBUG_PRINTP macro automatically inserts the procedure name
15746 into the output, saving hundreds of copies of procedure name
15747 strings within the source, shrinking the memory footprint of the
15748 debug version of the core subsystem.
15750 Source Code Structure:
15752 The source code directory tree was restructured to reflect the
15753 current organization of the component architecture. Some files
15754 and directories have been moved and/or renamed.
15758 Fixed leaking kacpidpc processes.
15760 Fixed queueing event data even when /proc/acpi/event is not
15763 ASL Compiler, version X2020:
15765 Memory allocation performance enhancement - over 24X compile time
15766 improvement on large ASL files. Parse nodes and namestring
15767 buffers are now allocated from a large internal compiler buffer.
15769 The temporary .SRC file is deleted unless the "-s" option is
15772 The "-d" debug output option now sends all output to the .DBG file
15773 instead of the console.
15775 "External" second parameter is now optional
15777 "ElseIf" syntax now properly allows the predicate
15779 Last operand to "Load" now recognized as a Target operand
15781 Debug object can now be used anywhere as a normal object.
15783 ResourceTemplate now returns an object of type BUFFER
15785 EISAID now returns an object of type INTEGER
15787 "Index" now works with a STRING operand
15789 "LoadTable" now accepts optional parameters
15791 "ToString" length parameter is now optional
15793 "Interrupt (ResourceType," parse error fixed.
15795 "Register" with a user-defined region space parse error fixed
15797 Escaped backslash at the end of a string ("\\") scan/parse error
15800 "Revision" is now an object of type INTEGER.
15804 ------------------------------------------
15805 Summary of changes for this label: 05_02_01
15809 /proc/acpi/event now blocks properly.
15811 Removed /proc/sys/acpi. You can still dump your DSDT from
15814 ACPI CA Core Subsystem:
15816 Fixed a problem introduced in the previous label where some of the
15817 "small" resource descriptor types were not recognized.
15819 Improved error messages for the case where an ASL Field is outside
15820 the range of the parent operation region.
15822 ASL Compiler, version X2018:
15825 Added error detection for ASL Fields that extend beyond the length
15826 of the parent operation region (only if the length of the region
15827 is known at compile time.) This includes fields that have a
15828 minimum access width that is smaller than the parent region, and
15829 individual field units that are partially or entirely beyond the
15830 extent of the parent.
15834 ------------------------------------------
15835 Summary of changes for this label: 04_27_01
15837 ACPI CA Core Subsystem:
15839 Fixed a problem where the namespace mutex could be released at the
15840 wrong time during execution of AcpiRemoveAddressSpaceHandler.
15842 Added optional thread ID output for debug traces, to simplify
15843 debugging of multiple threads. Added context switch notification
15844 when the debug code realizes that a different thread is now
15845 executing ACPI code.
15847 Some additional external data types have been prefixed with the
15848 string "ACPI_" for consistency. This may effect existing code.
15849 The data types affected are the external callback typedefs - e.g.,
15851 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
15855 Fixed an issue with the OSL semaphore implementation where a
15856 thread was waking up with an error from receiving a SIGCHLD
15859 Linux version of ACPI CA now uses the system C library for string
15860 manipulation routines instead of a local implementation.
15862 Cleaned up comments and removed TBDs.
15864 ASL Compiler, version X2017:
15866 Enhanced error detection and reporting for all file I/O
15871 Programmer Reference updated to version 1.06.
15875 ------------------------------------------
15876 Summary of changes for this label: 04_13_01
15878 ACPI CA Core Subsystem:
15880 Restructured support for BufferFields and RegionFields.
15881 BankFields support is now fully operational. All known 32-bit
15882 limitations on field sizes have been removed. Both BufferFields
15883 and (Operation) RegionFields are now supported by the same field
15886 Resource support now supports QWORD address and IO resources. The
15887 16/32/64 bit address structures and the Extended IRQ structure
15888 have been changed to properly handle Source Resource strings.
15890 A ThreadId of -1 is now used to indicate a "mutex not acquired"
15891 condition internally and must never be returned by AcpiOsThreadId.
15892 This reserved value was changed from 0 since Unix systems allow a
15897 Driver code reorganized to enhance portability
15899 Added a kernel configuration option to control ACPI_DEBUG
15901 Fixed the EC driver to honor _GLK.
15903 ASL Compiler, version X2016:
15905 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
15906 address space was set to 0, not 0x7f as it should be.
15908 ------------------------------------------
15909 Summary of changes for this label: 03_13_01
15911 ACPI CA Core Subsystem:
15913 During ACPI initialization, the _SB_._INI method is now run if
15916 Notify handler fix - notifies are deferred until the parent method
15917 completes execution. This fixes the "mutex already acquired"
15918 issue seen occasionally.
15920 Part of the "implicit conversion" rules in ACPI 2.0 have been
15921 found to cause compatibility problems with existing ASL/AML. The
15922 convert "result-to-target-type" implementation has been removed
15923 for stores to method Args and Locals. Source operand conversion
15924 is still fully implemented. Possible changes to ACPI 2.0
15925 specification pending.
15927 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
15930 Fix for compiler warnings for 64-bit compiles.
15934 /proc output aligned for easier parsing.
15936 Release-version compile problem fixed.
15938 New kernel configuration options documented in Configure.help.
15940 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
15945 Power resource driver integrated with bus manager.
15947 Fixed kernel fault during active cooling for thermal zones.
15951 The source code tree has been restructured.
15955 ------------------------------------------
15956 Summary of changes for this label: 03_02_01
15958 Linux OS Services Layer (OSL):
15960 Major revision of all Linux-specific code.
15962 Modularized all ACPI-specific drivers.
15964 Added new thermal zone and power resource drivers.
15966 Revamped /proc interface (new functionality is under /proc/acpi).
15968 New kernel configuration options.
15970 Linux known issues:
15972 New kernel configuration options not documented in Configure.help
15976 Module dependencies not currently implemented. If used, they
15977 should be loaded in this order: busmgr, power, ec, system,
15978 processor, battery, ac_adapter, button, thermal.
15980 Modules will not load if CONFIG_MODVERSION is set.
15982 IBM 600E - entering S5 may reboot instead of shutting down.
15984 IBM 600E - Sleep button may generate "Invalid <NULL> context"
15987 Some systems may fail with "execution mutex already acquired"
15990 ACPI CA Core Subsystem:
15992 Added a new OSL Interface, AcpiOsGetThreadId. This was required
15993 for the deadlock detection code. Defined to return a non-zero, 32-
15994 bit thread ID for the currently executing thread. May be a non-
15995 zero constant integer on single-thread systems.
15997 Implemented deadlock detection for internal subsystem mutexes. We
15998 may add conditional compilation for this code (debug only) later.
16000 ASL/AML Mutex object semantics are now fully supported. This
16001 includes multiple acquires/releases by owner and support for the
16003 Mutex SyncLevel parameter.
16005 A new "Force Release" mechanism automatically frees all ASL
16006 Mutexes that have been acquired but not released when a thread
16007 exits the interpreter. This forces conformance to the ACPI spec
16008 ("All mutexes must be released when an invocation exits") and
16009 prevents deadlocked ASL threads. This mechanism can be expanded
16010 (later) to monitor other resource acquisitions if OEM ASL code
16011 continues to misbehave (which it will).
16013 Several new ACPI exception codes have been added for the Mutex
16016 Recursive method calls are now allowed and supported (the ACPI
16017 spec does in fact allow recursive method calls.) The number of
16018 recursive calls is subject to the restrictions imposed by the
16019 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
16022 Implemented support for the SyncLevel parameter for control
16023 methods (ACPI 2.0 feature)
16025 Fixed a deadlock problem when multiple threads attempted to use
16028 Fixed a problem where the string length of a String package
16029 element was not always set in a package returned from
16030 AcpiEvaluateObject.
16032 Fixed a problem where the length of a String package element was
16033 not always included in the length of the overall package returned
16034 from AcpiEvaluateObject.
16036 Added external interfaces (Acpi*) to the ACPI debug memory
16037 manager. This manager keeps a list of all outstanding
16038 allocations, and can therefore detect memory leaks and attempts to
16039 free memory blocks more than once. Useful for code such as the
16040 power manager, etc. May not be appropriate for device drivers.
16041 Performance with the debug code enabled is slow.
16043 The ACPI Global Lock is now an optional hardware element.
16045 ASL Compiler Version X2015:
16047 Integrated changes to allow the compiler to be generated on
16048 multiple platforms.
16050 Linux makefile added to generate the compiler on Linux
16054 All platform-specific headers have been moved to their own
16055 subdirectory, Include/Platform.
16057 New source file added, Interpreter/ammutex.c
16059 New header file, Include/acstruct.h
16063 The programmer reference has been updated for the following new
16064 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
16066 ------------------------------------------
16067 Summary of changes for this label: 02_08_01
16069 Core ACPI CA Subsystem: Fixed a problem where an error was
16070 incorrectly returned if the return resource buffer was larger than
16071 the actual data (in the resource interfaces).
16073 References to named objects within packages are resolved to the
16075 full pathname string before packages are returned directly (via
16076 the AcpiEvaluateObject interface) or indirectly via the resource
16079 Linux OS Services Layer (OSL):
16081 Improved /proc battery interface.
16084 Added C-state debugging output and other miscellaneous fixes.
16086 ASL Compiler Version X2014:
16088 All defined method arguments can now be used as local variables,
16089 including the ones that are not actually passed in as parameters.
16090 The compiler tracks initialization of the arguments and issues an
16091 exception if they are used without prior assignment (just like
16094 The -o option now specifies a filename prefix that is used for all
16095 output files, including the AML output file. Otherwise, the
16096 default behavior is as follows: 1) the AML goes to the file
16097 specified in the DSDT. 2) all other output files use the input
16098 source filename as the base.
16100 ------------------------------------------
16101 Summary of changes for this label: 01_25_01
16103 Core ACPI CA Subsystem: Restructured the implementation of object
16104 store support within the interpreter. This includes support for
16105 the Store operator as well as any ASL operators that include a
16108 Partially implemented support for Implicit Result-to-Target
16109 conversion. This is when a result object is converted on the fly
16110 to the type of an existing target object. Completion of this
16111 support is pending further analysis of the ACPI specification
16112 concerning this matter.
16114 CPU-specific code has been removed from the subsystem (hardware
16117 New Power Management Timer functions added
16119 Linux OS Services Layer (OSL): Moved system state transition code
16120 to the core, fixed it, and modified Linux OSL accordingly.
16122 Fixed C2 and C3 latency calculations.
16125 We no longer use the compilation date for the version message on
16126 initialization, but retrieve the version from AcpiGetSystemInfo().
16128 Incorporated for fix Sony VAIO machines.
16130 Documentation: The Programmer Reference has been updated and
16134 ASL Compiler: Version X2013: Fixed a problem where the line
16135 numbering and error reporting could get out of sync in the
16136 presence of multiple include files.
16138 ------------------------------------------
16139 Summary of changes for this label: 01_15_01
16141 Core ACPI CA Subsystem:
16143 Implemented support for type conversions in the execution of the
16144 ASL Concatenate operator (The second operand is converted to
16145 match the type of the first operand before concatenation.)
16147 Support for implicit source operand conversion is partially
16148 implemented. The ASL source operand types Integer, Buffer, and
16149 String are freely interchangeable for most ASL operators and are
16150 converted by the interpreter on the fly as required. Implicit
16151 Target operand conversion (where the result is converted to the
16152 target type before storing) is not yet implemented.
16154 Support for 32-bit and 64-bit BCD integers is implemented.
16156 Problem fixed where a field read on an aligned field could cause a
16157 read past the end of the field.
16159 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
16160 does not return a value, but the caller expects one. (The ASL
16161 compiler flags this as a warning.)
16166 1. Static typechecking of all operands is implemented. This
16167 prevents the use of invalid objects (such as using a Package where
16168 an Integer is required) at compile time instead of at interpreter
16170 2. The ASL source line is printed with ALL errors and warnings.
16171 3. Bug fix for source EOF without final linefeed.
16172 4. Debug option is split into a parse trace and a namespace trace.
16173 5. Namespace output option (-n) includes initial values for
16174 integers and strings.
16175 6. Parse-only option added for quick syntax checking.
16176 7. Compiler checks for duplicate ACPI name declarations
16179 1. Relaxed typechecking to allow interchangeability between
16180 strings, integers, and buffers. These types are now converted by
16181 the interpreter at runtime.
16182 2. Compiler reports time taken by each internal subsystem in the
16186 ------------------------------------------
16187 Summary of changes for this label: 12_14_00
16191 This is the first official release of the compiler. Since the
16192 compiler requires elements of the Core Subsystem, this label
16193 synchronizes everything.
16195 ------------------------------------------
16196 Summary of changes for this label: 12_08_00
16199 Fixed a problem where named references within the ASL definition
16200 of both OperationRegions and CreateXXXFields did not work
16201 properly. The symptom was an AE_AML_OPERAND_TYPE during
16202 initialization of the region/field. This is similar (but not
16203 related internally) to the problem that was fixed in the last
16206 Implemented both 32-bit and 64-bit support for the BCD ASL
16207 functions ToBCD and FromBCD.
16209 Updated all legal headers to include "2000" in the copyright
16212 ------------------------------------------
16213 Summary of changes for this label: 12_01_00
16215 Fixed a problem where method invocations within the ASL definition
16216 of both OperationRegions and CreateXXXFields did not work
16217 properly. The symptom was an AE_AML_OPERAND_TYPE during
16218 initialization of the region/field:
16220 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
16221 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
16224 Fixed a problem where operators with more than one nested
16225 subexpression would fail. The symptoms were varied, by mostly
16226 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
16227 problem that has gone unnoticed until now.
16229 Subtract (Add (1,2), Multiply (3,4))
16231 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
16232 previous build (The prefix part of a relative path was handled
16235 Fixed a problem where Operation Region initialization failed if
16236 the operation region name was a "namepath" instead of a simple
16237 "nameseg". Symptom was an AE_NO_OPERAND error.
16239 Fixed a problem where an assignment to a local variable via the
16240 indirect RefOf mechanism only worked for the first such
16241 assignment. Subsequent assignments were ignored.
16243 ------------------------------------------
16244 Summary of changes for this label: 11_15_00
16246 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
16247 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
16248 the AML interpreter does NOT have support for the new 2.0 ASL
16249 grammar terms at this time.
16251 All ACPI hardware access is via the GAS structures in the ACPI 2.0
16254 All physical memory addresses across all platforms are now 64 bits
16255 wide. Logical address width remains dependent on the platform
16258 AcpiOsMapMemory interface changed to a 64-bit physical address.
16260 The AML interpreter integer size is now 64 bits, as per the ACPI
16263 For backwards compatibility with ACPI 1.0, ACPI tables with a
16264 revision number less than 2 use 32-bit integers only.
16266 Fixed a problem where the evaluation of OpRegion operands did not
16267 always resolve them to numbers properly.
16269 ------------------------------------------
16270 Summary of changes for this label: 10_20_00
16272 Fix for CBN_._STA issue. This fix will allow correct access to
16273 CBN_ OpRegions when the _STA returns 0x8.
16275 Support to convert ACPI constants (Ones, Zeros, One) to actual
16276 values before a package object is returned
16278 Fix for method call as predicate to if/while construct causing
16279 incorrect if/while behavior
16281 Fix for Else block package lengths sometimes calculated wrong (if
16284 Fix for Processor object length field, was always zero
16286 Table load abort if FACP sanity check fails
16288 Fix for problem with Scope(name) if name already exists
16290 Warning emitted if a named object referenced cannot be found
16291 (resolved) during method execution.
16297 ------------------------------------------
16298 Summary of changes for this label: 9_29_00
16300 New table initialization interfaces: AcpiInitializeSubsystem no
16301 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
16302 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
16303 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
16306 Note: These interface changes require changes to all existing OSDs
16308 The PCI_Config default address space handler is always installed
16309 at the root namespace object.
16311 -------------------------------------------
16312 Summary of changes for this label: 09_15_00
16314 The new initialization architecture is implemented. New
16315 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
16316 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
16318 (Namespace is automatically loaded when a table is loaded)
16320 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
16321 52 bytes to 32 bytes. There is usually one of these for every
16322 namespace object, so the memory savings is significant.
16324 Implemented just-in-time evaluation of the CreateField operators.
16326 Bug fixes for IA-64 support have been integrated.
16328 Additional code review comments have been implemented
16330 The so-called "third pass parse" has been replaced by a final walk
16331 through the namespace to initialize all operation regions (address
16332 spaces) and fields that have not yet been initialized during the
16333 execution of the various _INI and REG methods.
16335 New file - namespace/nsinit.c
16337 -------------------------------------------
16338 Summary of changes for this label: 09_01_00
16340 Namespace manager data structures have been reworked to change the
16341 primary object from a table to a single object. This has
16342 resulted in dynamic memory savings of 3X within the namespace and
16343 2X overall in the ACPI CA subsystem.
16345 Fixed problem where the call to AcpiEvFindPciRootBuses was
16346 inadvertently left commented out.
16348 Reduced the warning count when generating the source with the GCC
16351 Revision numbers added to each module header showing the
16352 SourceSafe version of the file. Please refer to this version
16353 number when giving us feedback or comments on individual modules.
16355 The main object types within the subsystem have been renamed to
16356 clarify their purpose:
16358 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
16359 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
16360 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
16362 NOTE: no changes to the initialization sequence are included in
16365 -------------------------------------------
16366 Summary of changes for this label: 08_23_00
16368 Fixed problem where TerminateControlMethod was being called
16369 multiple times per method
16371 Fixed debugger problem where single stepping caused a semaphore to
16374 Improved performance through additional parse object caching -
16375 added ACPI_EXTENDED_OP type
16377 -------------------------------------------
16378 Summary of changes for this label: 08_10_00
16380 Parser/Interpreter integration: Eliminated the creation of
16381 complete parse trees for ACPI tables and control methods.
16382 Instead, parse subtrees are created and then deleted as soon as
16383 they are processed (Either entered into the namespace or executed
16384 by the interpreter). This reduces the use of dynamic kernel
16385 memory significantly. (about 10X)
16387 Exception codes broken into classes and renumbered. Be sure to
16388 recompile all code that includes acexcep.h. Hopefully we won't
16389 have to renumber the codes again now that they are split into
16390 classes (environment, programmer, AML code, ACPI table, and
16393 Fixed some additional alignment issues in the Resource Manager
16396 Implemented semaphore tracking in the AcpiExec utility, and fixed
16397 several places where mutexes/semaphores were being unlocked
16398 without a corresponding lock operation. There are no known
16399 semaphore or mutex "leaks" at this time.
16401 Fixed the case where an ASL Return operator is used to return an
16404 -------------------------------------------
16405 Summary of changes for this label: 07_28_00
16407 Fixed a problem with the way addresses were calculated in
16408 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
16409 manifested itself when a Field was created with WordAccess or
16410 DwordAccess, but the field unit defined within the Field was less
16412 than a Word or Dword.
16414 Fixed a problem in AmlDumpOperands() module's loop to pull
16415 operands off of the operand stack to display information. The
16416 problem manifested itself as a TLB error on 64-bit systems when
16417 accessing an operand stack with two or more operands.
16419 Fixed a problem with the PCI configuration space handlers where
16420 context was getting confused between accesses. This required a
16421 change to the generic address space handler and address space
16422 setup definitions. Handlers now get both a global handler context
16423 (this is the one passed in by the user when executing
16424 AcpiInstallAddressSpaceHandler() and a specific region context
16425 that is unique to each region (For example, the _ADR, _SEG and
16426 _BBN values associated with a specific region). The generic
16427 function definitions have changed to the following:
16429 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
16430 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
16431 *HandlerContext, // This used to be void *Context void
16432 *RegionContext); // This is an additional parameter
16434 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
16435 RegionHandle, UINT32 Function, void *HandlerContext, void
16436 **RegionContext); // This used to be **ReturnContext
16438 -------------------------------------------
16439 Summary of changes for this label: 07_21_00
16441 Major file consolidation and rename. All files within the
16442 interpreter have been renamed as well as most header files. This
16443 was done to prevent collisions with existing files in the host
16444 OSs -- filenames such as "config.h" and "global.h" seem to be
16445 quite common. The VC project files have been updated. All
16446 makefiles will require modification.
16448 The parser/interpreter integration continues in Phase 5 with the
16449 implementation of a complete 2-pass parse (the AML is parsed
16450 twice) for each table; This avoids the construction of a huge
16451 parse tree and therefore reduces the amount of dynamic memory
16452 required by the subsystem. Greater use of the parse object cache
16453 means that performance is unaffected.
16455 Many comments from the two code reviews have been rolled in.
16457 The 64-bit alignment support is complete.
16459 -------------------------------------------
16460 Summary of changes for this label: 06_30_00
16462 With a nod and a tip of the hat to the technology of yesteryear,
16463 we've added support in the source code for 80 column output
16464 devices. The code is now mostly constrained to 80 columns or
16465 less to support environments and editors that 1) cannot display
16466 or print more than 80 characters on a single line, and 2) cannot
16467 disable line wrapping.
16469 A major restructuring of the namespace data structure has been
16470 completed. The result is 1) cleaner and more
16471 understandable/maintainable code, and 2) a significant reduction
16472 in the dynamic memory requirement for each named ACPI object
16475 -------------------------------------------
16476 Summary of changes for this label: 06_23_00
16478 Linux support has been added. In order to obtain approval to get
16479 the ACPI CA subsystem into the Linux kernel, we've had to make
16480 quite a few changes to the base subsystem that will affect all
16481 users (all the changes are generic and OS- independent). The
16482 effects of these global changes have been somewhat far reaching.
16483 Files have been merged and/or renamed and interfaces have been
16484 renamed. The major changes are described below.
16486 Osd* interfaces renamed to AcpiOs* to eliminate namespace
16487 pollution/confusion within our target kernels. All OSD
16488 interfaces must be modified to match the new naming convention.
16490 Files merged across the subsystem. A number of the smaller source
16491 and header files have been merged to reduce the file count and
16492 increase the density of the existing files. There are too many
16493 to list here. In general, makefiles that call out individual
16494 files will require rebuilding.
16496 Interpreter files renamed. All interpreter files now have the
16497 prefix am* instead of ie* and is*.
16499 Header files renamed: The acapi.h file is now acpixf.h. The
16500 acpiosd.h file is now acpiosxf.h. We are removing references to
16501 the acronym "API" since it is somewhat windowsy. The new name is
16502 "external interface" or xface or xf in the filenames.j
16505 All manifest constants have been forced to upper case (some were
16506 mixed case.) Also, the string "ACPI_" has been prepended to many
16507 (not all) of the constants, typedefs, and structs.
16509 The globals "DebugLevel" and "DebugLayer" have been renamed
16510 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
16512 All other globals within the subsystem are now prefixed with
16513 "AcpiGbl_" Internal procedures within the subsystem are now
16514 prefixed with "Acpi" (with only a few exceptions). The original
16515 two-letter abbreviation for the subcomponent remains after "Acpi"
16516 - for example, CmCallocate became AcpiCmCallocate.
16518 Added a source code translation/conversion utility. Used to
16519 generate the Linux source code, it can be modified to generate
16520 other types of source as well. Can also be used to cleanup
16521 existing source by removing extraneous spaces and blank lines.
16522 Found in tools/acpisrc/*
16524 OsdUnMapMemory was renamed to OsdUnmapMemory and then
16525 AcpiOsUnmapMemory. (UnMap became Unmap).
16527 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
16528 When set to one, this indicates that the caller wants to use the
16530 semaphore as a mutex, not a counting semaphore. ACPI CA uses
16531 both types. However, implementers of this call may want to use
16532 different OS primitives depending on the type of semaphore
16533 requested. For example, some operating systems provide separate
16535 "mutex" and "semaphore" interfaces - where the mutex interface is
16536 much faster because it doesn't have all the overhead of a full
16537 semaphore implementation.
16539 Fixed a deadlock problem where a method that accesses the PCI
16540 address space can block forever if it is the first access to the
16543 -------------------------------------------
16544 Summary of changes for this label: 06_02_00
16546 Support for environments that cannot handle unaligned data
16547 accesses (e.g. firmware and OS environments devoid of alignment
16548 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
16549 been added (via configurable macros) in these three areas: -
16550 Transfer of data from the raw AML byte stream is done via byte
16551 moves instead of word/dword/qword moves. - External objects are
16552 aligned within the user buffer, including package elements (sub-
16553 objects). - Conversion of name strings to UINT32 Acpi Names is now
16556 The Store operator was modified to mimic Microsoft's
16557 implementation when storing to a Buffer Field.
16559 Added a check of the BM_STS bit before entering C3.
16561 The methods subdirectory has been obsoleted and removed. A new
16562 file, cmeval.c subsumes the functionality.
16564 A 16-bit (DOS) version of AcpiExec has been developed. The
16565 makefile is under the acpiexec directory.