1 ----------------------------------------
2 22 April 2016. Summary of changes for version 20160422:
4 1) ACPICA kernel-resident subsystem:
6 Fixed a regression in the GAS (generic address structure) arbitrary bit
7 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
8 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
10 ACPI 6.0: Added support for new/renamed resource macros. One new argument
11 was added to each of these macros, and the original name has been
12 deprecated. The AML disassembler will always disassemble to the new
13 names. Support for the new macros was added to iASL, disassembler,
14 resource manager, and the acpihelp utility. ACPICA BZ 1274.
16 I2cSerialBus -> I2cSerialBusV2
17 SpiSerialBus -> SpiSerialBusV2
18 UartSerialBus -> UartSerialBusV2
20 ACPI 6.0: Added support for a new integer field that was appended to the
21 package object returned by the _BIX method. This adds iASL compile-time
22 and AML runtime error checking. ACPICA BZ 1273.
24 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
25 Subspace Type2" (Headers, Disassembler, and data table compiler).
27 Example Code and Data Size: These are the sizes for the OS-independent
28 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
29 debug version of the code includes the debug output trace mechanism and
30 has a much larger code and data size.
33 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
34 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
36 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
37 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
40 2) iASL Compiler/Disassembler and Tools:
42 iASL: Implemented an ASL grammar extension to allow/enable executable
43 "module-level code" to be created and executed under the various
44 operators that create new scopes. This type of AML code is already
45 supported in all known AML interpreters, and the grammar change will
46 appear in the next version of the ACPI specification. Simplifies the
47 conditional runtime creation of named objects under these object types:
55 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
56 ease-of-use to the ASL language. The syntax is similar to the
57 corresponding C operator, and is implemented with the existing AML While
58 opcode -- thus requiring no changes to existing AML interpreters.
60 For (Initialize, Predicate, Update) {TermList}
65 Initializer // Nothing | TermArg => ComputationalData
66 Predicate // Nothing | TermArg => ComputationalData
67 Update // Nothing | TermArg => ComputationalData
71 iASL: The _HID/_ADR detection and validation has been enhanced to search
72 under conditionals in order to allow these objects to be conditionally
75 iASL: Fixed several issues with the constant folding feature. The
76 improvement allows better detection and resolution of statements that can
77 be folded at compile time. ACPICA BZ 1266.
79 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
80 conversion to the ASL ElseIf operator where incorrect ASL code could be
83 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
84 sometimes an extra (and extraneous) set of parentheses were emitted for
85 some combinations of operators. Although this did not cause any problems
86 with recompilation of the disassembled code, it made the code more
87 difficult to read. David Box. ACPICA BZ 1231.
89 iASL: Changed to ignore the unreferenced detection for predefined names
90 of resource descriptor elements, when the resource descriptor is
91 created/defined within a control method.
93 iASL: Disassembler: Fix a possible fault with externally declared Buffer
96 ----------------------------------------
97 18 March 2016. Summary of changes for version 20160318:
99 1) ACPICA kernel-resident subsystem:
101 Added support for arbitrary bit lengths and bit offsets for registers
102 defined by the Generic Address Structure. Previously, only aligned bit
103 lengths of 8/16/32/64 were supported. This was sufficient for many years,
104 but recently some machines have been seen that require arbitrary bit-
105 level support. ACPICA BZ 1240. Lv Zheng.
107 Fixed an issue where the \_SB._INI method sometimes must be evaluated
108 before any _REG methods are evaluated. Lv Zheng.
110 Implemented several changes related to ACPI table support
111 (Headers/Disassembler/TableCompiler):
112 NFIT: For ACPI 6.1, updated to add some additional new fields and
114 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
116 DMAR: Added new constants per the 10/2014 DMAR spec.
117 IORT: Added new subtable per the 10/2015 IORT spec.
118 HEST: For ACPI 6.1, added new constants and new subtable.
119 DBG2: Added new constants per the 12/2015 DBG2 spec.
120 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
122 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
124 Updated header support for the DMAR table to match the current version of
127 Added extensions to the ASL Concatenate operator to allow any ACPI object
128 to be passed as an operand. Any object other than Integer/String/Buffer
129 simply returns a string containing the object type. This extends the
130 usefulness of the Printf macros. Previously, Concatenate would abort the
131 control method if a non-data object was encountered.
133 ACPICA source code: Deployed the C "const" keyword across the source code
134 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
136 Example Code and Data Size: These are the sizes for the OS-independent
137 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
138 debug version of the code includes the debug output trace mechanism and
139 has a much larger code and data size.
142 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
143 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
145 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
146 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
149 2) iASL Compiler/Disassembler and Tools:
151 iASL/Disassembler: Improved the heuristic used to determine the number of
152 arguments for an externally defined control method (a method in another
153 table). Although this is an improvement, there is no deterministic way to
154 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
155 will completely solve this problem as it is deployed (automatically) in
158 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
159 statements that could cause errors when the disassembled file is
160 compiled. ACPICA BZ 1243. David Box.
162 iASL: Fixed a regression caused by the merger of the two versions of the
163 local strtoul64. Because of a dependency on a global variable, strtoul64
164 could return an error for integers greater than a 32-bit value. ACPICA BZ
167 iASL: Fixed a regression where a fault could occur for an ASL Return
168 statement if it invokes a control method that is not resolved. ACPICA BZ
171 AcpiXtract: Improved input file validation: detection of binary files and
172 non-acpidump text files.
174 ----------------------------------------
175 12 February 2016. Summary of changes for version 20160212:
177 1) ACPICA kernel-resident subsystem:
179 Implemented full support for the ACPI 6.1 specification (released in
180 January). This version of the specification is available at:
181 http://www.uefi.org/specifications
183 Only a relatively small number of changes were required in ACPICA to
184 support ACPI 6.1, in these areas:
185 - New predefined names
187 - A new subtable for HEST
188 - A few other header changes for new values
190 Ensure \_SB_._INI is executed before any _REG methods are executed. There
191 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
193 Reverted a change made in version 20151218 which enabled method
194 invocations to be targets of various ASL operators (SuperName and Target
195 grammar elements). While the new behavior is supported by the ACPI
196 specification, other AML interpreters do not support this behavior and
197 never will. The ACPI specification will be updated for ACPI 6.2 to remove
198 this support. Therefore, the change was reverted to the original ACPICA
201 ACPICA now supports the GCC 6 compiler.
203 Current Release: (Note: build changes increased sizes)
204 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
205 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
207 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
208 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
211 2) iASL Compiler/Disassembler and Tools:
213 Completed full support for the ACPI 6.0 External() AML opcode. The
214 compiler emits an external AML opcode for each ASL External statement.
215 This opcode is used by the disassembler to assist with the disassembly of
216 external control methods by specifying the required number of arguments
217 for the method. AML interpreters do not use this opcode. To ensure that
218 interpreters do not even see the opcode, a block of one or more external
219 opcodes is surrounded by an "If(0)" construct. As this feature becomes
220 commonly deployed in BIOS code, the ability of disassemblers to correctly
221 disassemble AML code will be greatly improved. David Box.
223 iASL: Implemented support for an optional cross-reference output file.
224 The -lx option will create a the cross-reference file with the suffix
225 "xrf". Three different types of cross-reference are created in this file:
226 - List of object references made from within each control method
227 - Invocation (caller) list for each user-defined control method
228 - List of references to each non-method object in the namespace
230 iASL: Method invocations as ASL Target operands are now disallowed and
231 flagged as errors in preparation for ACPI 6.2 (see the description of the
234 ----------------------------------------
235 8 January 2016. Summary of changes for version 20160108:
237 1) ACPICA kernel-resident subsystem:
239 Updated all ACPICA copyrights and signons to 2016: Added the 2016
240 copyright to all source code module headers and utility/tool signons.
241 This includes the standard Linux dual-license header. This affects
242 virtually every file in the ACPICA core subsystem, iASL compiler, all
243 ACPICA utilities, and the ACPICA test suite.
245 Fixed a regression introduced in version 20151218 concerning the
246 execution of so-called module-level ASL/AML code. Namespace objects
247 created under a module-level If() construct were not properly/fully
248 entered into the namespace and could cause an interpreter fault when
251 Example Code and Data Size: These are the sizes for the OS-independent
252 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
253 debug version of the code includes the debug output trace mechanism and
254 has a much larger code and data size.
257 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
258 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
260 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
261 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
264 2) iASL Compiler/Disassembler and Tools:
266 Fixed a problem with the compilation of the GpioIo and GpioInt resource
267 descriptors. The _PIN field name was incorrectly defined to be an array
268 of 32-bit values, but the _PIN values are in fact 16 bits each. This
269 would cause incorrect bit width warnings when using Word (16-bit) fields
270 to access the descriptors.
273 ----------------------------------------
274 18 December 2015. Summary of changes for version 20151218:
276 1) ACPICA kernel-resident subsystem:
278 Implemented per-AML-table execution of "module-level code" as individual
279 ACPI tables are loaded into the namespace during ACPICA initialization.
280 In other words, any module-level code within an AML table is executed
281 immediately after the table is loaded, instead of batched and executed
282 after all of the tables have been loaded. This provides compatibility
283 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
286 To fully support the feature above, the default operation region handlers
287 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
288 installed before any ACPI tables are loaded. This enables module-level
289 code to access these address spaces during the table load and module-
290 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
293 Implemented several changes to the internal _REG support in conjunction
294 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
295 utilities for the changes above. Although these tools were changed, host
296 operating systems that simply use the default handlers for SystemMemory,
297 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
299 For example, in the code below, DEV1 is conditionally added to the
300 namespace by the DSDT via module-level code that accesses an operation
301 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
302 created immediately after the DSDT is loaded in order for the SSDT to
303 successfully reference DEV1. Previously, this code would cause an
304 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
305 fully supported by ACPICA.
307 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
309 OperationRegion (OPR1, SystemMemory, 0x400, 32)
310 Field (OPR1, AnyAcc, NoLock, Preserve)
321 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
323 External (\DEV1, DeviceObj)
329 Fixed an AML interpreter problem where control method invocations were
330 not handled correctly when the invocation was itself a SuperName argument
331 to another ASL operator. In these cases, the method was not invoked.
332 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
340 Signal, Release, Reset
343 Implemented automatic String-to-ObjectReference conversion support for
344 packages returned by predefined names (such as _DEP). A common BIOS error
345 is to add double quotes around an ObjectReference namepath, which turns
346 the reference into an unexpected string object. This support detects the
347 problem and corrects it before the package is returned to the caller that
348 invoked the method. Lv Zheng.
350 Implemented extensions to the Concatenate operator. Concatenate now
351 accepts any type of object, it is not restricted to simply
352 Integer/String/Buffer. For objects other than these 3 basic data types,
353 the argument is treated as a string containing the name of the object
354 type. This expands the utility of Concatenate and the Printf/Fprintf
355 macros. ACPICA BZ 1222.
357 Cleaned up the output of the ASL Debug object. The timer() value is now
358 optional and no longer emitted by default. Also, the basic data types of
359 Integer/String/Buffer are simply emitted as their values, without a data
360 type string -- since the data type is obvious from the output. ACPICA BZ
363 Example Code and Data Size: These are the sizes for the OS-independent
364 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
365 debug version of the code includes the debug output trace mechanism and
366 has a much larger code and data size.
369 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
370 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
372 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
373 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
376 2) iASL Compiler/Disassembler and Tools:
378 iASL: Fixed some issues with the ASL Include() operator. This operator
379 was incorrectly defined in the iASL parser rules, causing a new scope to
380 be opened for the code within the include file. This could lead to
381 several issues, including allowing ASL code that is technically illegal
382 and not supported by AML interpreters. Note, this does not affect the
383 related #include preprocessor operator. ACPICA BZ 1212.
385 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
386 operator is essentially an ASL macro since there is no AML opcode
387 associated with it. The code emitted by the iASL compiler for ElseIf is
388 an Else opcode followed immediately by an If opcode. The disassembler
389 will now emit an ElseIf if it finds an Else immediately followed by an
390 If. This simplifies the decoded ASL, especially for deeply nested
391 If..Else and large Switch constructs. Thus, the disassembled code more
392 closely follows the original source ASL. ACPICA BZ 1211. Example:
404 ElseIf (Arg0 == 0x02)
409 AcpiExec: Added support for the new module level code behavior and the
410 early region installation. This required a small change to the
411 initialization, since AcpiExec must install its own operation region
414 AcpiExec: Added support to make the debug object timer optional. Default
415 is timer disabled. This cleans up the debug object output -- the timer
418 AcpiExec: Multiple ACPI tables are now loaded in the order that they
419 appear on the command line. This can be important when there are
420 interdependencies/references between the tables.
422 iASL/Templates. Add support to generate template files with multiple
423 SSDTs within a single output file. Also added ommand line support to
424 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
428 ----------------------------------------
429 24 November 2015. Summary of changes for version 20151124:
431 1) ACPICA kernel-resident subsystem:
433 Fixed a possible regression for a previous update to FADT handling. The
434 FADT no longer has a fixed table ID, causing some issues with code that
435 was hardwired to a specific ID. Lv Zheng.
437 Fixed a problem where the method auto-serialization could interfere with
438 the current SyncLevel. This change makes the auto-serialization support
439 transparent to the SyncLevel support and management.
441 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
442 interface is intended for early access to the namespace during the
443 initial namespace device discovery walk. The _SUB method has been seen to
444 access operation regions in some cases, causing errors because the
445 operation regions are not fully initialized.
447 AML Debugger: Fixed some issues with the terminate/quit/exit commands
448 that can cause faults. Lv Zheng.
450 AML Debugger: Add thread ID support so that single-step mode only applies
451 to the AML Debugger thread. This prevents runtime errors within some
454 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
455 methods that are invoked by this interface are optional, removed warnings
456 emitted for the case where one or more of these methods do not exist.
457 ACPICA BZ 1208, original change by Prarit Bhargava.
459 Made a major pass through the entire ACPICA source code base to
460 standardize formatting that has diverged a bit over time. There are no
461 functional changes, but this will of course cause quite a few code
462 differences from the previous ACPICA release.
464 Example Code and Data Size: These are the sizes for the OS-independent
465 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
466 debug version of the code includes the debug output trace mechanism and
467 has a much larger code and data size.
470 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
471 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
473 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
474 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
477 2) iASL Compiler/Disassembler and Tools:
479 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
480 definition blocks within a single ASL file and the resulting AML file.
481 Support for this type of file was also added to the various tools that
482 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
483 example code below shows two definition blocks within the same file:
485 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
489 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
493 iASL: Enhanced typechecking for the Name() operator. All expressions for
494 the value of the named object must be reduced/folded to a single constant
495 at compile time, as per the ACPI specification (the AML definition of
498 iASL: Fixed some code indentation issues for the -ic and -ia options (C
499 and assembly headers). Now all emitted code correctly begins in column 1.
501 iASL: Added an error message for an attempt to open a Scope() on an
502 object defined in an SSDT. The DSDT is always loaded into the namespace
503 first, so any attempt to open a Scope on an SSDT object will fail at
507 ----------------------------------------
508 30 September 2015. Summary of changes for version 20150930:
510 1) ACPICA kernel-resident subsystem:
512 Debugger: Implemented several changes and bug fixes to assist support for
513 the in-kernel version of the AML debugger. Lv Zheng.
514 - Fix the "predefined" command for in-kernel debugger.
515 - Do not enter debug command loop for the help and version commands.
516 - Disallow "execute" command during execution/single-step of a method.
518 Interpreter: Updated runtime typechecking for all operators that have
519 target operands. The operand is resolved and validated that it is legal.
520 For example, the target cannot be a non-data object such as a Device,
521 Mutex, ThermalZone, etc., as per the ACPI specification.
523 Debugger: Fixed the double-mutex user I/O handshake to work when local
524 deadlock detection is enabled.
526 Debugger: limited display of method locals and arguments (LocalX and
527 ArgX) to only those that have actually been initialized. This prevents
528 lines of extraneous output.
530 Updated the definition of the NFIT table to correct the bit polarity of
531 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
533 Example Code and Data Size: These are the sizes for the OS-independent
534 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
535 debug version of the code includes the debug output trace mechanism and
536 has a much larger code and data size.
539 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
540 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
542 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
543 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
546 2) iASL Compiler/Disassembler and Tools:
548 iASL: Improved the compile-time typechecking for operands of many of the
551 -- Added an option to disable compiler operand/operator typechecking (-
554 -- For the following operators, the TermArg operands are now validated
555 when possible to be Integer data objects: BankField, OperationRegion,
556 DataTableRegion, Buffer, and Package.
558 -- Store (Source, Target): Both the source and target operands are
559 resolved and checked that the operands are both legal. For example,
560 neither operand can be a non-data object such as a Device, Mutex,
561 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
562 operator can be used to store an object to any type of target object.
564 -- Store (Source, Target): If the source is a Package object, the target
565 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
566 is a Package, the source must also be a Package.
568 -- Store (Source, Target): A warning is issued if the source and target
569 resolve to the identical named object.
571 -- Store (Source, <method invocation>): An error is generated for the
572 target method invocation, as this construct is not supported by the AML
575 -- For all ASL math and logic operators, the target operand must be a
576 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
577 includes the function return value also.
579 -- External declarations are also included in the typechecking where
580 possible. External objects defined using the UnknownObj keyword cannot be
581 typechecked, however.
583 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
585 - Legacy code: Index(PKG1, 3)
586 - New ASL+ code: PKG1[3]
587 This completes the ACPI 6.0 ASL+ support as it was the only operator not
590 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
591 spaces were inadvertently appended to the filename, causing file access
592 and deletion problems on some systems.
594 ASL Test Suite (ASLTS): Updated the master makefile to generate all
595 possible compiler output files when building the test suite -- thus
596 exercising these features of the compiler. These files are automatically
597 deleted when the test suite exits.
600 ----------------------------------------
601 18 August 2015. Summary of changes for version 20150818:
603 1) ACPICA kernel-resident subsystem:
605 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
606 Zheng. ACPICA BZ 1186.
608 Completed development to ensure that the ACPICA Disassembler and Debugger
609 are fully standalone components of ACPICA. Removed cross-component
610 dependences. Lv Zheng.
612 The max-number-of-AML-loops is now runtime configurable (previously was
613 compile-time only). This is essentially a loop timeout to force-abort
614 infinite AML loops. ACPCIA BZ 1192.
616 Debugger: Cleanup output to dump ACPI names and namepaths without any
617 trailing underscores. Lv Zheng. ACPICA BZ 1135.
619 Removed unnecessary conditional compilations across the Debugger and
620 Disassembler components where entire modules could be left uncompiled.
622 The aapits test is deprecated and has been removed from the ACPICA git
623 tree. The test has never been completed and has not been maintained, thus
624 becoming rather useless. ACPICA BZ 1015, 794.
626 A batch of small changes to close bugzilla and other reports:
627 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
628 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
629 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
630 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
632 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
634 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
636 - Debugger: Split debugger initialization/termination interfaces. Lv
638 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
640 - AcpiExec: Add debug message during _REG method phase during table
642 - AcpiNames: Fix a regression where some output was missing and no longer
644 - Debugger: General cleanup and simplification. Lv Zheng.
645 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
647 Example Code and Data Size: These are the sizes for the OS-independent
648 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
649 debug version of the code includes the debug output trace mechanism and
650 has a much larger code and data size.
653 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
654 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
656 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
657 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
660 2) iASL Compiler/Disassembler and Tools:
662 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
663 were not handled properly and caused load errors. Now, properly invoke
664 and use the ACPICA auto-reallocate mechanism for ACPI table data
665 structures. ACPICA BZ 1188
667 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
670 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
671 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
672 executed during initialization. ACPICA BZ 1187, 1189.
674 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
675 that corresponds to each disassembled ASL statement, to simplify
676 debugging. ACPICA BZ 1191.
678 Debugger: Add option to the "objects" command to display a summary of the
679 current namespace objects (Object type and count). This is displayed if
680 the command is entered with no arguments.
682 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
685 ----------------------------------------
686 17 July 2015. Summary of changes for version 20150717:
688 1) ACPICA kernel-resident subsystem:
690 Improved the partitioning between the Debugger and Disassembler
691 components. This allows the Debugger to be used standalone within kernel
692 code without the Disassembler (which is used for single stepping also).
693 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
695 Debugger: Implemented a new command to trace the execution of control
696 methods (Trace). This is especially useful for the in-kernel version of
697 the debugger when file I/O may not be available for method trace output.
698 See the ACPICA reference for more information. Lv Zheng.
700 Moved all C library prototypes (used for the local versions of these
701 functions when requested) to a new header, acclib.h
702 Cleaned up the use of non-ANSI C library functions. These functions are
703 implemented locally in ACPICA. Moved all such functions to a common
704 source file, utnonansi.c
706 Debugger: Fixed a problem with the "!!" command (get last command
707 executed) where the debugger could enter an infinite loop and eventually
710 Removed the use of local macros that were used for some of the standard C
711 library functions to automatically cast input parameters. This mostly
712 affected the is* functions where the input parameter is defined to be an
713 int. This required a few modifications to the main ACPICA source code to
714 provide casting for these functions and eliminate possible compiler
715 warnings for these parameters.
717 Across the source code, added additional status/error checking to resolve
718 issues discovered by static source code analysis tools such as Coverity.
720 Example Code and Data Size: These are the sizes for the OS-independent
721 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
722 debug version of the code includes the debug output trace mechanism and
723 has a much larger code and data size.
726 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
727 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
729 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
730 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
733 2) iASL Compiler/Disassembler and Tools:
735 iASL: Fixed a regression where the device map file feature no longer
736 worked properly when used in conjunction with the disassembler. It only
737 worked properly with the compiler itself.
739 iASL: Implemented a new warning for method LocalX variables that are set
740 but never used (similar to a C compiler such as gcc). This also applies
741 to ArgX variables that are not defined by the parent method, and are
742 instead (legally) used as local variables.
744 iASL/Preprocessor: Finished the pass-through of line numbers from the
745 preprocessor to the compiler. This ensures that compiler errors/warnings
746 have the correct original line numbers and filenames, regardless of any
749 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
750 pass-through of comments to the preprocessor output file (which becomes
751 the compiler input file). Also fixed a problem with // comments that
752 appear after a math expression.
754 iASL: Added support for the TCPA server table to the table compiler and
755 template generator. (The client table was already previously supported)
757 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
758 identify the iASL compiler.
760 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
761 multiple times. The new names are ACPI_SIGN_NEGATIVE and
764 AcpiHelp: Update to expand help messages for the iASL preprocessor
768 ----------------------------------------
769 19 June 2015. Summary of changes for version 20150619:
771 Two regressions in version 20150616 have been addressed:
773 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
774 etc.) This update changes ACPICA to only use the standard headers for
775 functions, or the prototypes for the local versions of the C library
776 functions. Across the source code, this required some additional casts
777 for some Clib invocations for portability. Moved all local prototypes to
780 Fixes several problems with recent changes to the handling of the FACS
781 table that could cause some systems not to boot.
784 ----------------------------------------
785 16 June 2015. Summary of changes for version 20150616:
788 1) ACPICA kernel-resident subsystem:
790 Across the entire ACPICA source code base, the various macros for the C
791 library functions (such as ACPI_STRLEN, etc.) have been removed and
792 replaced by the standard C library names (strlen, etc.) The original
793 purpose for these macros is no longer applicable. This simplification
794 reduces the number of macros used in the ACPICA source code
795 significantly, improving readability and maintainability.
797 Implemented support for a new ACPI table, the OSDT. This table, the
798 "override" SDT, can be loaded directly by the host OS at boot time. It
799 enables the replacement of existing namespace objects that were installed
800 via the DSDT and/or SSDTs. The primary purpose for this is to replace
801 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
802 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
805 Added support for systems with (improperly) two FACS tables -- a "32-bit"
806 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
807 X field). This change will support both automatically. There continues to
808 be systems found with this issue. This support requires a change to the
809 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
810 been added to allow the host to select which FACS is desired
811 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
814 Added a new feature to allow for systems that do not contain an FACS.
815 Although this is already supported on hardware-reduced platforms, the
816 feature has been extended for all platforms. The reasoning is that we do
817 not want to abort the entire ACPICA initialization just because the
818 system is seriously buggy and has no FACS.
820 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
821 not correctly transcribed from the ACPI specification in ACPICA version
824 Implemented support for the _CLS object in the AcpiGetObjectInfo external
827 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
828 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
829 compiler also updated. Note: The TCPA "server" table is not supported by
830 the disassembler/table-compiler at this time.
832 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
834 Example Code and Data Size: These are the sizes for the OS-independent
835 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
836 debug version of the code includes the debug output trace mechanism and
837 has a much larger code and data size.
840 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
841 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
843 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
844 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
847 2) iASL Compiler/Disassembler and Tools:
849 Disassembler: Fixed a problem with the new symbolic operator disassembler
850 where incorrect ASL code could be emitted in some cases for the "non-
851 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
852 ShiftRight. The actual problem cases seem to be rather unusual in common
853 ASL code, however. David Box.
855 Modified the linux version of acpidump to obtain ACPI tables from not
856 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
859 iASL: Fixed a problem where the user preprocessor output file (.i)
860 contained extra data that was not expected. The compiler was using this
861 file as a temporary file and passed through #line directives in order to
862 keep compiler error messages in sync with the input file and line number
863 across multiple include files. The (.i) is no longer a temporary file as
864 the compiler uses a new, different file for the original purpose.
866 iASL: Fixed a problem where comments within the original ASL source code
867 file were not passed through to the preprocessor output file, nor any
870 iASL: Fixed some issues for the handling of the "#include" preprocessor
871 directive and the similar (but not the same) "Include" ASL operator.
873 iASL: Add support for the new OSDT in both the disassembler and compiler.
875 iASL: Fixed a problem with the constant folding support where a Buffer
876 object could be incorrectly generated (incorrectly formed) during a
877 conversion to a Store() operator.
879 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
880 description text for the _REV predefined name. _REV now permanently
881 returns 2, as per the ACPI 6.0 specification.
883 Debugger: Enhanced the output of the Debug ASL object for references
884 produced by the Index operator. For Buffers and strings, only output the
885 actual byte pointed to by the index. For packages, only print the single
886 package element decoded by the index. Previously, the entire
887 buffer/string/package was emitted.
889 iASL/Table-compiler: Fixed a regression where the "generic" data types
890 were no longer recognized, causing errors.
893 ----------------------------------------
894 15 May 2015. Summary of changes for version 20150515:
896 This release implements most of ACPI 6.0 as described below.
898 1) ACPICA kernel-resident subsystem:
900 Implemented runtime argument checking and return value checking for all
901 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
902 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
904 Example Code and Data Size: These are the sizes for the OS-independent
905 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
906 debug version of the code includes the debug output trace mechanism and
907 has a much larger code and data size.
910 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
911 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
913 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
914 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
917 2) iASL Compiler/Disassembler and Tools:
919 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
920 names (argument count validation and return value typechecking.)
922 iASL disassembler and table compiler: implemented support for all new
923 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
925 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
928 iASL preprocessor: Added a new directive to enable inclusion of binary
929 blobs into ASL code. The new directive is #includebuffer. It takes a
930 binary file as input and emits a named ascii buffer object into the ASL
933 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
935 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
938 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
942 ----------------------------------------
943 10 April 2015. Summary of changes for version 20150410:
945 Reverted a change introduced in version 20150408 that caused
946 a regression in the disassembler where incorrect operator
947 symbols could be emitted.
950 ----------------------------------------
951 08 April 2015. Summary of changes for version 20150408:
954 1) ACPICA kernel-resident subsystem:
956 Permanently set the return value for the _REV predefined name. It now
957 returns 2 (was 5). This matches other ACPI implementations. _REV will be
958 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
959 for ACPI 2.0 and later. It should never be used to differentiate or
960 identify operating systems.
962 Added the "Windows 2015" string to the _OSI support. ACPICA will now
963 return TRUE to a query with this string.
965 Fixed several issues with the local version of the printf function.
967 Added the C99 compiler option (-std=c99) to the Unix makefiles.
970 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
971 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
973 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
974 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
977 2) iASL Compiler/Disassembler and Tools:
979 iASL: Implemented an enhancement to the constant folding feature to
980 transform the parse tree to a simple Store operation whenever possible:
981 Add (2, 3, X) ==> is converted to: Store (5, X)
982 X = 2 + 3 ==> is converted to: Store (5, X)
984 Updated support for the SLIC table (Software Licensing Description Table)
985 in both the Data Table compiler and the disassembler. The SLIC table
986 support now conforms to "Microsoft Software Licensing Tables (SLIC and
987 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
988 following the ACPI header is now defined to be "Proprietary Data", and as
989 such, can only be entered or displayed as a hex data block.
991 Implemented full support for the MSDM table as described in the document
992 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
993 following the ACPI header is defined to be "Proprietary Data", and can
994 only be entered or displayed as a hex data block.
996 Implemented the -Pn option for the iASL Table Compiler (was only
997 implemented for the ASL compiler). This option disables the iASL
1000 Disassembler: For disassembly of Data Tables, added a comment field
1001 around the Ascii equivalent data that is emitted as part of the "Raw
1002 Table Data" block. This prevents the iASL Preprocessor from possible
1003 confusion if/when the table is compiled.
1005 Disassembler: Added an option (-df) to force the disassembler to assume
1006 that the table being disassembled contains valid AML. This feature is
1007 useful for disassembling AML files that contain ACPI signatures other
1008 than DSDT or SSDT (such as OEMx or other signatures).
1010 Changes for the EFI version of the tools:
1011 1) Fixed a build error/issue
1012 2) Fixed a cast warning
1014 iASL: Fixed a path issue with the __FILE__ operator by making the
1015 directory prefix optional within the internal SplitInputFilename
1018 Debugger: Removed some unused global variables.
1020 Tests: Updated the makefile for proper generation of the AAPITS suite.
1023 ----------------------------------------
1024 04 February 2015. Summary of changes for version 20150204:
1026 ACPICA kernel-resident subsystem:
1028 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1029 copyright to all module headers and signons, including the standard Linux
1030 header. This affects virtually every file in the ACPICA core subsystem,
1031 iASL compiler, all ACPICA utilities, and the test suites.
1033 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
1034 A raw gpe handling mechanism was created to allow better handling of GPE
1035 storms that aren't easily managed by the normal handler. The raw handler
1036 allows disabling/renabling of the the GPE so that interrupt storms can be
1037 avoided in cases where events cannot be timely serviced. In this
1038 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
1039 GPE. This API will leave the reference counts undisturbed, thereby
1040 preventing unintentional clearing of the GPE when the intent in only to
1041 temporarily disable it. Raw handlers allow enabling and disabling of a
1042 GPE by removing GPE register locking. As such, raw handlers much provide
1043 their own locks while using GPE API's to protect access to GPE data
1047 Events: Always modify GPE registers under the GPE lock.
1048 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
1049 values. Reported as bug by joe.liu@apple.com.
1051 Unix makefiles: Separate option to disable optimizations and
1052 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
1053 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
1054 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
1055 errors when building ACPICA. This allows disabling the option without
1056 also having to disable optimazations.
1060 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1061 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
1064 --------------------------------------
1065 07 November 2014. Summary of changes for version 20141107:
1067 This release is available at https://acpica.org/downloads
1069 This release introduces and implements language extensions to ASL that
1070 provide support for symbolic ("C-style") operators and expressions. These
1071 language extensions are known collectively as ASL+.
1074 1) iASL Compiler/Disassembler and Tools:
1076 Disassembler: Fixed a problem with disassembly of the UartSerialBus
1077 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
1080 Disassembler: Fixed the Unicode macro support to add escape sequences.
1081 All non-printable ASCII values are emitted as escape sequences, as well
1082 as the standard escapes for quote and backslash. Ensures that the
1083 disassembled macro can be correctly recompiled.
1085 iASL: Added Printf/Fprintf macros for formatted output. These macros are
1086 translated to existing AML Concatenate and Store operations. Printf
1087 writes to the ASL Debug object. Fprintf allows the specification of an
1088 ASL name as the target. Only a single format specifier is required, %o,
1089 since the AML interpreter dynamically converts objects to the required
1092 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1093 (Concatenate (Concatenate (Concatenate ("", Arg0),
1094 ": Unexpected value for "), Arg1), ", "), Arg2),
1095 " at line "), Arg3), Debug)
1097 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
1098 Arg0, Arg1, Arg2, Arg3)
1100 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
1101 ("", Arg1), ": "), Arg0), " Successful"), STR1)
1103 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
1105 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
1106 ASL parse tree before the AML code is generated. This allows blocks of
1107 ASL code to be removed in order to help locate and identify problem
1108 devices and/or code. David E. Box.
1110 AcpiExec: Added support (-fi) for an optional namespace object
1111 initialization file. This file specifies initial values for namespace
1112 objects as necessary for debugging and testing different ASL code paths
1113 that may be taken as a result of BIOS options.
1116 2) Overview of symbolic operator support for ASL (ASL+)
1117 -------------------------------------------------------
1119 As an extension to the ASL language, iASL implements support for symbolic
1120 (C-style) operators for math and logical expressions. This can greatly
1121 simplify ASL code as well as improve both readability and
1122 maintainability. These language extensions can exist concurrently with
1123 all legacy ASL code and expressions.
1125 The symbolic extensions are 100% compatible with existing AML
1126 interpreters, since no new AML opcodes are created. To implement the
1127 extensions, the iASL compiler transforms the symbolic expressions into
1128 the legacy ASL/AML equivalents at compile time.
1130 Full symbolic expressions are supported, along with the standard C
1131 precedence and associativity rules.
1133 Full disassembler support for the symbolic expressions is provided, and
1134 creates an automatic migration path for existing ASL code to ASL+ code
1135 via the disassembly process. By default, the disassembler now emits ASL+
1136 code with symbolic expressions. An option (-dl) is provided to force the
1137 disassembler to emit legacy ASL code if desired.
1139 Below is the complete list of the currently supported symbolic operators
1140 with examples. See the iASL User Guide for additional information.
1143 ASL+ Syntax Legacy ASL Equivalent
1144 ----------- ---------------------
1148 Z = X + Y Add (X, Y, Z)
1149 Z = X - Y Subtract (X, Y, Z)
1150 Z = X * Y Multiply (X, Y, Z)
1151 Z = X / Y Divide (X, Y, , Z)
1152 Z = X % Y Mod (X, Y, Z)
1153 Z = X << Y ShiftLeft (X, Y, Z)
1154 Z = X >> Y ShiftRight (X, Y, Z)
1155 Z = X & Y And (X, Y, Z)
1156 Z = X | Y Or (X, Y, Z)
1157 Z = X ^ Y Xor (X, Y, Z)
1162 // Logical operators
1164 (X == Y) LEqual (X, Y)
1165 (X != Y) LNotEqual (X, Y)
1166 (X < Y) LLess (X, Y)
1167 (X > Y) LGreater (X, Y)
1168 (X <= Y) LLessEqual (X, Y)
1169 (X >= Y) LGreaterEqual (X, Y)
1170 (X && Y) LAnd (X, Y)
1174 // Assignment and compound assignment operations
1177 X += Y Add (X, Y, X)
1178 X -= Y Subtract (X, Y, X)
1179 X *= Y Multiply (X, Y, X)
1180 X /= Y Divide (X, Y, , X)
1181 X %= Y Mod (X, Y, X)
1182 X <<= Y ShiftLeft (X, Y, X)
1183 X >>= Y ShiftRight (X, Y, X)
1184 X &= Y And (X, Y, X)
1186 X ^= Y Xor (X, Y, X)
1193 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
1194 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
1196 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
1198 And (MEMB, 0xFFFFFFF0, SRMB)
1199 Store (MEMB, Local2)
1200 Store (PDBM, Local1)
1201 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
1203 Or (PDBM, 0x02, PDBM)
1207 If (((R510 & 0x03FB) == 0x02E0) ||
1208 ((R520 & 0x03FB) == 0x02E0) ||
1209 ((R530 & 0x03FB) == 0x02E0) ||
1210 ((R540 & 0x03FB) == 0x02E0))
1212 SRMB = (MEMB & 0xFFFFFFF0)
1215 PDBM &= 0xFFFFFFFFFFFFFFF9
1221 Store (0x1234, Local1)
1222 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
1223 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
1224 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
1225 Store (Index (PKG1, 0x03), Local6)
1226 Store (Add (Local3, Local2), Debug)
1227 Add (Local1, 0x0F, Local2)
1228 Add (Local1, Multiply (Local2, Local3), Local2)
1229 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
1233 Local3 = (((Local1 + TEST) + 0x20) * Local2)
1234 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
1235 Local3 = (Local1 + (TEST + (0x20 * Local2)))
1236 Local6 = Index (PKG1, 0x03)
1237 Debug = (Local3 + Local2)
1238 Local2 = (Local1 + 0x0F)
1239 Local2 = (Local1 + (Local2 * Local3))
1240 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
1243 ----------------------------------------
1244 26 September 2014. Summary of changes for version 20140926:
1246 1) ACPICA kernel-resident subsystem:
1248 Updated the GPIO operation region handler interface (GeneralPurposeIo).
1249 In order to support GPIO Connection objects with multiple pins, along
1250 with the related Field objects, the following changes to the interface
1251 have been made: The Address is now defined to be the offset in bits of
1252 the field unit from the previous invocation of a Connection. It can be
1253 viewed as a "Pin Number Index" into the connection resource descriptor.
1254 The BitWidth is the exact bit width of the field. It is usually one bit,
1255 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
1256 additional information and examples.
1258 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
1259 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
1260 by the firmware), so that they cannot fire until they are enabled via
1261 AcpiUpdateAllGpes. Rafael J. Wysocki.
1263 Added a new return flag for the Event/GPE status interfaces --
1264 AcpiGetEventStatus and AcpiGetGpeStatus. The new
1265 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
1266 GPE currently has a handler associated with it, and can thus actually
1267 affect the system. Lv Zheng.
1269 Example Code and Data Size: These are the sizes for the OS-independent
1270 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1271 debug version of the code includes the debug output trace mechanism and
1272 has a much larger code and data size.
1275 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1276 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1278 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1279 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1281 2) iASL Compiler/Disassembler and Tools:
1283 iASL: Fixed a memory allocation/free regression introduced in 20140828
1284 that could cause the compiler to crash. This was introduced inadvertently
1285 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
1288 iASL: Removed two error messages that have been found to create false
1289 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
1290 1) Illegal forward reference within a method
1291 2) Illegal reference across two methods
1293 iASL: Implemented a new option (-lm) to create a hardware mapping file
1294 that summarizes all GPIO, I2C, SPI, and UART connections. This option
1295 works for both the compiler and disassembler. See the iASL compiler user
1296 guide for additional information and examples (section 6.4.6).
1298 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
1299 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
1300 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
1302 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
1303 unless STDIN is actually a terminal. Assists with batch-mode processing.
1306 Disassembler/AcpiHelp: Added another large group of recognized _HID
1310 ----------------------------------------
1311 28 August 2014. Summary of changes for version 20140828:
1313 1) ACPICA kernel-resident subsystem:
1315 Fixed a problem related to the internal use of the Timer() operator where
1316 a 64-bit divide could cause an attempted link to a double-precision math
1317 library. This divide is not actually necessary, so the code was
1318 restructured to eliminate it. Lv Zheng.
1320 ACPI 5.1: Added support for the runtime validation of the _DSD package
1321 (similar to the iASL support).
1323 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
1324 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
1326 Example Code and Data Size: These are the sizes for the OS-independent
1327 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1328 debug version of the code includes the debug output trace mechanism and
1329 has a much larger code and data size.
1332 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
1333 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
1335 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
1336 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1338 2) iASL Compiler/Disassembler and Tools:
1340 AcpiExec: Fixed a problem on unix systems where the original terminal
1341 state was not always properly restored upon exit. Seen when using the -v
1342 option. ACPICA BZ 1104.
1344 iASL: Fixed a problem with the validation of the ranges/length within the
1345 Memory24 resource descriptor. There was a boundary condition when the
1346 range was equal to the (length -1) caused by the fact that these values
1347 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
1349 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
1351 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
1353 now supported properly.
1355 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
1356 in the disassembler, data table compiler, and table template generator.
1358 iASL: Added a requirement for Device() objects that one of either a _HID
1359 or _ADR must exist within the scope of a Device, as per the ACPI
1360 specification. Remove a similar requirement that was incorrectly in place
1361 for the _DSD object.
1363 iASL: Added error detection for illegal named references within control
1364 methods that would cause runtime failures. Now trapped as errors are: 1)
1365 References to objects within a non-parent control method. 2) Forward
1366 references (within a method) -- for control methods, AML interpreters use
1367 a one-pass parse of control methods. ACPICA BZ 1008.
1369 iASL: Added error checking for dependencies related to the _PSx power
1370 methods. ACPICA BZ 1029.
1371 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
1373 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
1376 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
1377 deploying the existing object and string caches and adding new caches for
1380 iASL: Split the huge parser source file into multiple subfiles to improve
1381 manageability. Generation now requires the M4 macro preprocessor, which
1382 is part of the Bison distribution on both unix and windows platforms.
1384 AcpiSrc: Fixed and removed all extraneous warnings generated during
1385 entire ACPICA source code scan and/or conversion.
1388 ----------------------------------------
1390 24 July 2014. Summary of changes for version 20140724:
1392 The ACPI 5.1 specification has been released and is available at:
1393 http://uefi.org/specs/access
1396 0) ACPI 5.1 support in ACPICA:
1398 ACPI 5.1 is fully supported in ACPICA as of this release.
1400 New predefined names. Support includes iASL and runtime ACPICA
1402 _CCA (Cache Coherency Attribute).
1403 _DSD (Device-Specific Data). David Box.
1405 Modifications to existing ACPI tables. Support includes headers, iASL
1406 Data Table compiler, disassembler, and the template generator.
1407 FADT - New fields and flags. Graeme Gregory.
1408 GTDT - One new subtable and new fields. Tomasz Nowicki.
1409 MADT - Two new subtables. Tomasz Nowicki.
1410 PCCT - One new subtable.
1413 New notification type for System Resource Affinity change events.
1416 1) ACPICA kernel-resident subsystem:
1418 Fixed a regression introduced in 20140627 where a fault can happen during
1419 the deletion of Alias AML namespace objects. The problem affected both
1420 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
1422 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
1423 simple mechanism to enable wake GPEs that have no associated handler or
1424 control method. Rafael Wysocki.
1426 Updated the AcpiEnableGpe interface to disallow the enable if there is no
1427 handler or control method associated with the particular GPE. This will
1428 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
1430 Updated GPE handling and dispatch by disabling the GPE before clearing
1431 the status bit for edge-triggered GPEs. Lv Zheng.
1433 Added Timer() support to the AML Debug object. The current timer value is
1434 now displayed with each invocation of (Store to) the debug object to
1435 enable simple generation of execution times for AML code (method
1436 execution for example.) ACPICA BZ 1093.
1438 Example Code and Data Size: These are the sizes for the OS-independent
1439 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1440 debug version of the code includes the debug output trace mechanism and
1441 has a much larger code and data size.
1444 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
1445 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
1447 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1448 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1451 2) iASL Compiler/Disassembler and Tools:
1453 Fixed an issue with the recently added local printf implementation,
1454 concerning width/precision specifiers that could cause incorrect output.
1455 Lv Zheng. ACPICA BZ 1094.
1457 Disassembler: Added support to detect buffers that contain UUIDs and
1458 disassemble them to an invocation of the ToUUID operator. Also emit
1459 commented descriptions of known ACPI-related UUIDs.
1461 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
1462 -u. Adds three new files.
1464 iASL: Update table compiler and disassembler for DMAR table changes that
1465 were introduced in September 2013. With assistance by David Woodhouse.
1467 ----------------------------------------
1468 27 June 2014. Summary of changes for version 20140627:
1470 1) ACPICA kernel-resident subsystem:
1472 Formatted Output: Implemented local versions of standard formatted output
1473 utilities such as printf, etc. Over time, it has been discovered that
1474 there are in fact many portability issues with printf, and the addition
1475 of this feature will fix/prevent these issues once and for all. Some
1476 known issues are summarized below:
1478 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
1479 for the Linux kernel and is %uI64 for some MSVC versions.
1480 2) Invoking printf consistently in a manner that is portable across both
1481 32-bit and 64-bit platforms is difficult at best in many situations.
1482 3) The output format for pointers varies from system to system (leading
1483 zeros especially), and leads to inconsistent output from ACPICA across
1485 4) Certain platform-specific printf formats may conflict with ACPICA use.
1486 5) If there is no local C library available, ACPICA now has local support
1489 -- To address these printf issues in a complete manner, ACPICA now
1490 directly implements a small subset of printf format specifiers, only
1491 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
1493 Implemented support for ACPICA generation within the EFI environment.
1494 Initially, the AcpiDump utility is supported in the UEFI shell
1495 environment. Lv Zheng.
1497 Added a new external interface, AcpiLogError, to improve ACPICA
1498 portability. This allows the host to redirect error messages from the
1499 ACPICA utilities. Lv Zheng.
1501 Added and deployed new OSL file I/O interfaces to improve ACPICA
1509 There are C library implementations of these functions in the new file
1510 service_layers/oslibcfs.c -- however, the functions can be implemented by
1511 the local host in any way necessary. Lv Zheng.
1513 Implemented a mechanism to disable/enable ACPI table checksum validation
1514 at runtime. This can be useful when loading tables very early during OS
1515 initialization when it may not be possible to map the entire table in
1516 order to compute the checksum. Lv Zheng.
1518 Fixed a buffer allocation issue for the Generic Serial Bus support.
1519 Originally, a fixed buffer length was used. This change allows for
1520 variable-length buffers based upon the protocol indicated by the field
1521 access attributes. Reported by Lan Tianyu. Lv Zheng.
1523 Fixed a problem where an object detached from a namespace node was not
1524 properly terminated/cleared and could cause a circular list problem if
1525 reattached. ACPICA BZ 1063. David Box.
1527 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
1529 Fixed a possible memory leak in an error return path within the function
1530 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
1532 Example Code and Data Size: These are the sizes for the OS-independent
1533 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1534 debug version of the code includes the debug output trace mechanism and
1535 has a much larger code and data size.
1538 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
1539 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
1541 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1542 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1545 2) iASL Compiler/Disassembler and Tools:
1547 Disassembler: Add dump of ASCII equivalent text within a comment at the
1548 end of each line of the output for the Buffer() ASL operator.
1550 AcpiDump: Miscellaneous changes:
1551 Fixed repetitive table dump in -n mode.
1552 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
1553 the ACPI 2.0 GUID fails.
1555 iASL: Fixed a problem where the compiler could fault if incorrectly given
1556 an acpidump output file as input. ACPICA BZ 1088. David Box.
1558 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
1559 they are invoked without any arguments.
1561 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
1562 1086. Colin Ian King.
1564 Disassembler: Cleaned up a block of code that extracts a parent Op
1565 object. Added a comment that explains that the parent is guaranteed to be
1566 valid in this case. ACPICA BZ 1069.
1569 ----------------------------------------
1570 24 April 2014. Summary of changes for version 20140424:
1572 1) ACPICA kernel-resident subsystem:
1574 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
1575 Some of these tables are known to contain a trailing NULL entry. Lv
1578 Removed an extraneous error message for the case where there are a large
1579 number of system GPEs (> 124). This was the "32-bit FADT register is too
1580 long to convert to GAS struct" message, which is irrelevant for GPEs
1581 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
1582 (limited capacity) GAS bit length. Also, several changes to ensure proper
1583 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
1586 Implemented and deployed additional configuration support for the public
1587 ACPICA external interfaces. Entire classes of interfaces can now be
1588 easily modified or configured out, replaced by stubbed inline functions
1589 by default. Lv Zheng.
1591 Moved all public ACPICA runtime configuration globals to the public
1592 ACPICA external interface file for convenience. Also, removed some
1593 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
1595 Documentation: Added a new section to the ACPICA reference describing the
1596 maximum number of GPEs that can be supported by the FADT-defined GPEs in
1597 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
1600 Example Code and Data Size: These are the sizes for the OS-independent
1601 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1602 debug version of the code includes the debug output trace mechanism and
1603 has a much larger code and data size.
1606 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
1607 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
1609 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1610 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1613 2) iASL Compiler/Disassembler and Tools:
1615 iASL and disassembler: Add full support for the LPIT table (Low Power
1616 Idle Table). Includes support in the disassembler, data table compiler,
1617 and template generator.
1620 1) Add option to force the use of the RSDT (over the XSDT).
1621 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
1623 iASL: Add check for predefined packages that are too large. For
1624 predefined names that contain subpackages, check if each subpackage is
1625 too large. (Check for too small already exists.)
1627 Debugger: Updated the GPE command (which simulates a GPE by executing the
1628 GPE code paths in ACPICA). The GPE device is now optional, and defaults
1629 to the GPE 0/1 FADT-defined blocks.
1631 Unix application OSL: Update line-editing support. Add additional error
1632 checking and take care not to reset terminal attributes on exit if they
1633 were never set. This should help guarantee that the terminal is always
1634 left in the previous state on program exit.
1637 ----------------------------------------
1638 25 March 2014. Summary of changes for version 20140325:
1640 1) ACPICA kernel-resident subsystem:
1642 Updated the auto-serialize feature for control methods. This feature
1643 automatically serializes all methods that create named objects in order
1644 to prevent runtime errors. The update adds support to ignore the
1645 currently executing AML SyncLevel when invoking such a method, in order
1646 to prevent disruption of any existing SyncLevel priorities that may exist
1647 in the AML code. Although the use of SyncLevels is relatively rare, this
1648 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
1649 appear on some machines starting with the 20140214 release.
1651 Added a new external interface to allow the host to install ACPI tables
1652 very early, before the namespace is even created. AcpiInstallTable gives
1653 the host additional flexibility for ACPI table management. Tables can be
1654 installed directly by the host as if they had originally appeared in the
1655 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
1656 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
1657 with additional internal restructuring and cleanup. See the ACPICA
1658 Reference for interface details. Lv Zheng.
1660 Added validation of the checksum for all incoming dynamically loaded
1661 tables (via external interfaces or via AML Load/LoadTable operators). Lv
1664 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
1665 and GPE handler removal. Restructured calls to eliminate possible race
1666 conditions. Lv Zheng.
1668 Added a warning for the use/execution of the ASL/AML Unload (table)
1669 operator. This will help detect and identify machines that use this
1670 operator if and when it is ever used. This operator has never been seen
1671 in the field and the usage model and possible side-effects of the drastic
1672 runtime action of a full table removal are unknown.
1674 Reverted the use of #pragma push/pop which was introduced in the 20140214
1675 release. It appears that push and pop are not implemented by enough
1676 compilers to make the use of this feature feasible for ACPICA at this
1677 time. However, these operators may be deployed in a future ACPICA
1680 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
1683 Source code generation:
1684 1) Disabled the use of the "strchr" macro for the gcc-specific
1685 generation. For some versions of gcc, this macro can periodically expose
1686 a compiler bug which in turn causes compile-time error(s).
1687 2) Added support for PPC64 compilation. Colin Ian King.
1689 Example Code and Data Size: These are the sizes for the OS-independent
1690 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1691 debug version of the code includes the debug output trace mechanism and
1692 has a much larger code and data size.
1695 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1696 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1698 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1699 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1702 2) iASL Compiler/Disassembler and Tools:
1704 Disassembler: Added several new features to improve the readability of
1705 the resulting ASL code. Extra information is emitted within comment
1706 fields in the ASL code:
1707 1) Known _HID/_CID values are decoded to descriptive text.
1708 2) Standard values for the Notify() operator are decoded to descriptive
1710 3) Target operands are expanded to full pathnames (in a comment) when
1713 Disassembler: Miscellaneous updates for extern() handling:
1714 1) Abort compiler if file specified by -fe option does not exist.
1715 2) Silence unnecessary warnings about argument count mismatches.
1716 3) Update warning messages concerning unresolved method externals.
1717 4) Emit "UnknownObj" keyword for externals whose type cannot be
1721 1) Added the -a option to display both the ASL syntax and the AML
1722 encoding for an input ASL operator. This effectively displays all known
1723 information about an ASL operator with one AcpiHelp invocation.
1724 2) Added substring match support (similar to a wildcard) for the -i
1725 (_HID/PNP IDs) option.
1727 iASL/Disassembler: Since this tool does not yet support execution on big-
1728 endian machines, added detection of endianness and an error message if
1729 execution is attempted on big-endian. Support for big-endian within iASL
1730 is a feature that is on the ACPICA to-be-done list.
1733 1) Remove option to extract binary files from an acpidump; this function
1734 is made obsolete by the AcpiXtract utility.
1735 2) General cleanup of open files and allocated buffers.
1738 ----------------------------------------
1739 14 February 2014. Summary of changes for version 20140214:
1741 1) ACPICA kernel-resident subsystem:
1743 Implemented a new mechanism to proactively prevent problems with ill-
1744 behaved reentrant control methods that create named ACPI objects. This
1745 behavior is illegal as per the ACPI specification, but is nonetheless
1746 frequently seen in the field. Previously, this could lead to an
1747 AE_ALREADY_EXISTS exception if the method was actually entered by more
1748 than one thread. This new mechanism detects such methods at table load
1749 time and marks them "serialized" to prevent reentrancy. A new global
1750 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
1751 feature if desired. This mechanism and global option obsoletes and
1752 supersedes the previous AcpiGbl_SerializeAllMethods option.
1754 Added the "Windows 2013" string to the _OSI support. ACPICA will now
1755 respond TRUE to _OSI queries with this string. It is the stated policy of
1756 ACPICA to add new strings to the _OSI support as soon as possible after
1757 they are defined. See the full ACPICA _OSI policy which has been added to
1758 the utilities/utosi.c file.
1760 Hardened/updated the _PRT return value auto-repair code:
1761 1) Do not abort the repair on a single subpackage failure, continue to
1762 check all subpackages.
1763 2) Add check for the minimum subpackage length (4).
1764 3) Properly handle extraneous NULL package elements.
1766 Added support to avoid the possibility of infinite loops when traversing
1767 object linked lists. Never allow an infinite loop, even in the face of
1768 corrupted object lists.
1770 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
1771 pack(pop) directives to ensure that the ACPICA headers are independent of
1772 compiler settings or other host headers.
1774 Example Code and Data Size: These are the sizes for the OS-independent
1775 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1776 debug version of the code includes the debug output trace mechanism and
1777 has a much larger code and data size.
1780 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1781 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1783 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1784 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1787 2) iASL Compiler/Disassembler and Tools:
1789 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
1790 first reserved field was incorrectly forced to have a value of zero. This
1791 change correctly forces the field to have a value of one. ACPICA BZ 1081.
1793 Debugger: Added missing support for the "Extra" and "Data" subobjects
1794 when displaying object data.
1796 Debugger: Added support to display entire object linked lists when
1797 displaying object data.
1799 iASL: Removed the obsolete -g option to obtain ACPI tables from the
1800 Windows registry. This feature has been superseded by the acpidump
1804 ----------------------------------------
1805 14 January 2014. Summary of changes for version 20140114:
1807 1) ACPICA kernel-resident subsystem:
1809 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1810 copyright to all module headers and signons, including the standard Linux
1811 header. This affects virtually every file in the ACPICA core subsystem,
1812 iASL compiler, all ACPICA utilities, and the test suites.
1814 Improved parameter validation for AcpiInstallGpeBlock. Added the
1816 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
1817 2) There is not already a GPE block attached to the device.
1818 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
1821 Correctly support "references" in the ACPI_OBJECT. This change fixes the
1822 support to allow references (namespace nodes) to be passed as arguments
1823 to control methods via the evaluate object interface. This is probably
1824 most useful for testing purposes, however.
1826 Improved support for 32/64 bit physical addresses in printf()-like
1827 output. This change improves the support for physical addresses in printf
1828 debug statements and other output on both 32-bit and 64-bit hosts. It
1829 consistently outputs the appropriate number of bytes for each host. The
1830 %p specifier is unsatisfactory since it does not emit uniform output on
1831 all hosts/clib implementations (on some, leading zeros are not supported,
1832 leading to difficult-to-read output).
1834 Example Code and Data Size: These are the sizes for the OS-independent
1835 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1836 debug version of the code includes the debug output trace mechanism and
1837 has a much larger code and data size.
1840 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1841 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1843 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1844 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1847 2) iASL Compiler/Disassembler and Tools:
1849 iASL: Fix a possible fault when using the Connection() operator. Fixes a
1850 problem if the parent Field definition for the Connection operator refers
1851 to an operation region that does not exist. ACPICA BZ 1064.
1853 AcpiExec: Load of local test tables is now optional. The utility has the
1854 capability to load some various tables to test features of ACPICA.
1855 However, there are enough of them that the output of the utility became
1856 confusing. With this change, only the required local tables are displayed
1857 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
1858 line specification. This makes the default output simler and easier to
1859 understand. The -el command line option restores the original behavior
1860 for testing purposes.
1862 AcpiExec: Added support for overlapping operation regions. This change
1863 expands the simulation of operation regions by supporting regions that
1864 overlap within the given address space. Supports SystemMemory and
1865 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
1867 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
1868 allows AcpiExec to simulate these address spaces, similar to the current
1869 support for SystemMemory and SystemIO.
1871 Debugger: Added new command to read/write/compare all namespace objects.
1872 The command "test objects" will exercise the entire namespace by writing
1873 new values to each data object, and ensuring that the write was
1874 successful. The original value is then restored and verified.
1876 Debugger: Added the "test predefined" command. This change makes this
1877 test public and puts it under the new "test" command. The test executes
1878 each and every predefined name within the current namespace.
1881 ----------------------------------------
1882 18 December 2013. Summary of changes for version 20131218:
1884 Global note: The ACPI 5.0A specification was released this month. There
1885 are no changes needed for ACPICA since this release of ACPI is an
1886 errata/clarification release. The specification is available at
1890 1) ACPICA kernel-resident subsystem:
1892 Added validation of the XSDT root table if it is present. Some older
1893 platforms contain an XSDT that is ill-formed or otherwise invalid (such
1894 as containing some or all entries that are NULL pointers). This change
1895 adds a new function to validate the XSDT before actually using it. If the
1896 XSDT is found to be invalid, ACPICA will now automatically fall back to
1897 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
1898 ACPICA and enhanced by Lv Zheng and Bob Moore.
1900 Added a runtime option to ignore the XSDT and force the use of the RSDT.
1901 This change adds a runtime option that will force ACPICA to use the RSDT
1902 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
1903 requires that an XSDT be used instead of the RSDT, the XSDT has been
1904 found to be corrupt or ill-formed on some machines. Lv Zheng.
1906 Added a runtime option to favor 32-bit FADT register addresses over the
1907 64-bit addresses. This change adds an option to favor 32-bit FADT
1908 addresses when there is a conflict between the 32-bit and 64-bit versions
1909 of the same register. The default behavior is to use the 64-bit version
1910 in accordance with the ACPI specification. This can now be overridden via
1911 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
1913 During the change above, the internal "Convert FADT" and "Verify FADT"
1914 functions have been merged to simplify the code, making it easier to
1915 understand and maintain. ACPICA BZ 933.
1917 Improve exception reporting and handling for GPE block installation.
1918 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
1919 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
1921 Added helper macros to extract bus/segment numbers from the HEST table.
1922 This change adds two macros to extract the encoded bus and segment
1923 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
1924 Betty Dall <betty.dall@hp.com>
1926 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
1927 by ACPICA. It is not a public macro, so it should have no effect on
1928 existing OSV code. Lv Zheng.
1930 Example Code and Data Size: These are the sizes for the OS-independent
1931 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1932 debug version of the code includes the debug output trace mechanism and
1933 has a much larger code and data size.
1936 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1937 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1939 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1940 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1943 2) iASL Compiler/Disassembler and Tools:
1945 Disassembler: Improved pathname support for emitted External()
1946 statements. This change adds full pathname support for external names
1947 that have been resolved internally by the inclusion of additional ACPI
1948 tables (via the iASL -e option). Without this change, the disassembler
1949 can emit multiple externals for the same object, or it become confused
1950 when the Scope() operator is used on an external object. Overall, greatly
1951 improves the ability to actually recompile the emitted ASL code when
1952 objects a referenced across multiple ACPI tables. Reported by Michael
1953 Tsirkin (mst@redhat.com).
1955 Tests/ASLTS: Updated functional control suite to execute with no errors.
1956 David Box. Fixed several errors related to the testing of the interpreter
1957 slack mode. Lv Zheng.
1959 iASL: Added support to detect names that are declared within a control
1960 method, but are unused (these are temporary names that are only valid
1961 during the time the method is executing). A remark is issued for these
1962 cases. ACPICA BZ 1022.
1964 iASL: Added full support for the DBG2 table. Adds full disassembler,
1965 table compiler, and template generator support for the DBG2 table (Debug
1968 iASL: Added full support for the PCCT table, update the table definition.
1969 Updates the PCCT table definition in the actbl3.h header and adds table
1970 compiler and template generator support.
1972 iASL: Added an option to emit only error messages (no warnings/remarks).
1973 The -ve option will enable only error messages, warnings and remarks are
1974 suppressed. This can simplify debugging when only the errors are
1975 important, such as when an ACPI table is disassembled and there are many
1976 warnings and remarks -- but only the actual errors are of real interest.
1978 Example ACPICA code (source/tools/examples): Updated the example code so
1979 that it builds to an actual working program, not just example code. Added
1980 ACPI tables and execution of an example control method in the DSDT. Added
1981 makefile support for Unix generation.
1984 ----------------------------------------
1985 15 November 2013. Summary of changes for version 20131115:
1987 This release is available at https://acpica.org/downloads
1990 1) ACPICA kernel-resident subsystem:
1992 Resource Manager: Fixed loop termination for the "get AML length"
1993 function. The loop previously had an error termination on a NULL resource
1994 pointer, which can never happen since the loop simply increments a valid
1995 resource pointer. This fix changes the loop to terminate with an error on
1996 an invalid end-of-buffer condition. The problem can be seen as an
1997 infinite loop by callers to AcpiSetCurrentResources with an invalid or
1998 corrupted resource descriptor, or a resource descriptor that is missing
1999 an END_TAG descriptor. Reported by Dan Carpenter
2000 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
2002 Table unload and ACPICA termination: Delete all attached data objects
2003 during namespace node deletion. This fix updates namespace node deletion
2004 to delete the entire list of attached objects (attached via
2005 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
2006 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
2008 ACPICA termination: Added support to delete all objects attached to the
2009 root namespace node. This fix deletes any and all objects that have been
2010 attached to the root node via AcpiAttachData. Previously, none of these
2011 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
2013 Debug output: Do not emit the function nesting level for the in-kernel
2014 build. The nesting level is really only useful during a single-thread
2015 execution. Therefore, only enable this output for the AcpiExec utility.
2016 Also, only emit the thread ID when executing under AcpiExec (Context
2017 switches are still always detected and a message is emitted). ACPICA BZ
2020 Example Code and Data Size: These are the sizes for the OS-independent
2021 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2022 debug version of the code includes the debug output trace mechanism and
2023 has a much larger code and data size.
2026 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
2027 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
2029 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2030 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2033 2) iASL Compiler/Disassembler and Tools:
2035 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
2036 correct portable POSIX header for terminal control functions.
2038 Disassembler: Fixed control method invocation issues related to the use
2039 of the CondRefOf() operator. The problem is seen in the disassembly where
2040 control method invocations may not be disassembled properly if the
2041 control method name has been used previously as an argument to CondRefOf.
2042 The solution is to not attempt to emit an external declaration for the
2043 CondRefOf target (it is not necessary in the first place). This prevents
2044 disassembler object type confusion. ACPICA BZ 988.
2046 Unix Makefiles: Added an option to disable compiler optimizations and the
2047 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
2048 with optimizations (reportedly, gcc 4.4 for example). This change adds a
2049 command line option for make (NOOPT) that disables all compiler
2050 optimizations and the _FORTIFY_SOURCE compiler flag. The default
2051 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
2052 1034. Lv Zheng, Bob Moore.
2054 Tests/ASLTS: Added options to specify individual test cases and modes.
2055 This allows testers running aslts.sh to optionally specify individual
2056 test modes and test cases. Also added an option to disable the forced
2057 generation of the ACPICA tools from source if desired. Lv Zheng.
2059 ----------------------------------------
2060 27 September 2013. Summary of changes for version 20130927:
2062 This release is available at https://acpica.org/downloads
2065 1) ACPICA kernel-resident subsystem:
2067 Fixed a problem with store operations to reference objects. This change
2068 fixes a problem where a Store operation to an ArgX object that contained
2070 reference to a field object did not complete the automatic dereference
2072 then write to the actual field object. Instead, the object type of the
2073 field object was inadvertently changed to match the type of the source
2074 operand. The new behavior will actually write to the field object (buffer
2075 field or field unit), thus matching the correct ACPI-defined behavior.
2077 Implemented support to allow the host to redefine individual OSL
2078 prototypes. This change enables the host to redefine OSL prototypes found
2079 in the acpiosxf.h file. This allows the host to implement OSL interfaces
2080 with a macro or inlined function. Further, it allows the host to add any
2081 additional required modifiers such as __iomem, __init, __exit, etc., as
2082 necessary on a per-interface basis. Enables maximum flexibility for the
2083 OSL interfaces. Lv Zheng.
2085 Hardcoded the access width for the FADT-defined reset register. The ACPI
2086 specification requires the reset register width to be 8 bits. ACPICA now
2087 hardcodes the width to 8 and ignores the FADT width value. This provides
2088 compatibility with other ACPI implementations that have allowed BIOS code
2089 with bad register width values to go unnoticed. Matthew Garett, Bob
2093 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
2095 in the OSL header (acpiosxf). The change modifies the position of this
2096 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
2097 build issues if the OSL defines the implementation of the interface to be
2098 an inline stub function. Lv Zheng.
2100 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
2101 initialization interfaces. This change adds a new macro for the main init
2102 and terminate external interfaces in order to support hosts that require
2103 additional or different processing for these functions. Changed from
2104 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
2107 Cleaned up the memory allocation macros for configurability. In the
2109 case, the ACPI_ALLOCATE and related macros now resolve directly to their
2110 respective AcpiOs* OSL interfaces. Two options:
2111 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
2112 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2113 2) For AcpiExec (and for debugging), the macros can optionally be
2115 to the local ACPICA interfaces that track each allocation (local tracking
2116 is used to immediately detect memory leaks).
2119 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
2120 to predefine this macro to either TRUE or FALSE during the system build.
2122 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
2124 Example Code and Data Size: These are the sizes for the OS-independent
2125 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2126 debug version of the code includes the debug output trace mechanism and
2127 has a much larger code and data size.
2130 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
2131 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
2133 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2134 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2137 2) iASL Compiler/Disassembler and Tools:
2139 iASL: Implemented wildcard support for the -e option. This simplifies use
2140 when there are many SSDTs that must be included to resolve external
2142 declarations. ACPICA BZ 1041. Example:
2143 iasl -e ssdt*.dat -d dsdt.dat
2145 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
2146 adds a portable module that implements full history and limited line
2147 editing for Unix and Linux systems. It does not use readline() due to
2148 portability issues. Instead it uses the POSIX termio interface to put the
2149 terminal in raw input mode so that the various special keys can be
2151 (such as up/down-arrow for history support and left/right-arrow for line
2152 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
2154 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
2155 one or more spaces. This provides compatible with early or different
2156 versions of the AcpiDump utility. ACPICA BZ 1044.
2158 AcpiDump: Do not ignore tables that contain only an ACPI table header.
2159 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
2160 no other data. This change adds support to dump these tables. Any tables
2161 shorter than the length of an ACPI table header remain in error (an error
2162 message is emitted). Reported by Yi Li.
2164 Debugger: Echo actual command along with the "unknown command" message.
2166 ----------------------------------------
2167 23 August 2013. Summary of changes for version 20130823:
2169 1) ACPICA kernel-resident subsystem:
2171 Implemented support for host-installed System Control Interrupt (SCI)
2172 handlers. Certain ACPI functionality requires the host to handle raw
2173 SCIs. For example, the "SCI Doorbell" that is defined for memory power
2174 state support requires the host device driver to handle SCIs to examine
2175 if the doorbell has been activated. Multiple SCI handlers can be
2176 installed to allow for future expansion. New external interfaces are
2177 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
2178 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
2180 Operation region support: Never locally free the handler "context"
2181 pointer. This change removes some dangerous code that attempts to free
2182 the handler context pointer in some (rare) circumstances. The owner of
2183 the handler owns this pointer and the ACPICA code should never touch it.
2184 Although not seen to be an issue in any kernel, it did show up as a
2185 problem (fault) under AcpiExec. Also, set the internal storage field for
2186 the context pointer to zero when the region is deactivated, simply for
2187 sanity. David Box. ACPICA BZ 1039.
2189 AcpiRead: On error, do not modify the return value target location. If an
2190 error happens in the middle of a split 32/32 64-bit I/O operation, do not
2191 modify the target of the return value pointer. Makes the code consistent
2192 with the rest of ACPICA. Bjorn Helgaas.
2194 Example Code and Data Size: These are the sizes for the OS-independent
2195 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2196 debug version of the code includes the debug output trace mechanism and
2197 has a much larger code and data size.
2200 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
2201 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2203 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2204 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
2207 2) iASL Compiler/Disassembler and Tools:
2209 AcpiDump: Implemented several new features and fixed some problems:
2210 1) Added support to dump the RSDP, RSDT, and XSDT tables.
2211 2) Added support for multiple table instances (SSDT, UEFI).
2212 3) Added option to dump "customized" (overridden) tables (-c).
2213 4) Fixed a problem where some table filenames were improperly
2215 5) Improved some error messages, removed some unnecessary messages.
2217 iASL: Implemented additional support for disassembly of ACPI tables that
2218 contain invocations of external control methods. The -fe<file> option
2219 allows the import of a file that specifies the external methods along
2220 with the required number of arguments for each -- allowing for the
2221 correct disassembly of the table. This is a workaround for a limitation
2222 of AML code where the disassembler often cannot determine the number of
2223 arguments required for an external control method and generates incorrect
2224 ASL code. See the iASL reference for details. ACPICA BZ 1030.
2226 Debugger: Implemented a new command (paths) that displays the full
2227 pathnames (namepaths) and object types of all objects in the namespace.
2228 This is an alternative to the namespace command.
2230 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
2231 mechanism and any installed handlers.
2233 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
2234 This can occur if there are too many parent prefixes in a namepath (for
2235 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
2237 Application OSLs: Set the return value for the PCI read functions. These
2238 functions simply return AE_OK, but should set the return value to zero
2239 also. This change implements this. ACPICA BZ 1038.
2241 Debugger: Prevent possible command line buffer overflow. Increase the
2242 size of a couple of the debugger line buffers, and ensure that overflow
2243 cannot happen. ACPICA BZ 1037.
2245 iASL: Changed to abort immediately on serious errors during the parsing
2246 phase. Due to the nature of ASL, there is no point in attempting to
2247 compile these types of errors, and they typically end up causing a
2248 cascade of hundreds of errors which obscure the original problem.
2250 ----------------------------------------
2251 25 July 2013. Summary of changes for version 20130725:
2253 1) ACPICA kernel-resident subsystem:
2255 Fixed a problem with the DerefOf operator where references to FieldUnits
2256 and BufferFields incorrectly returned the parent object, not the actual
2257 value of the object. After this change, a dereference of a FieldUnit
2258 reference results in a read operation on the field to get the value, and
2259 likewise, the appropriate BufferField value is extracted from the target
2262 Fixed a problem where the _WAK method could cause a fault under these
2263 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
2264 method returned no value. The problem is rarely seen because most kernels
2265 run ACPICA in slack mode.
2267 For the DerefOf operator, a fatal error now results if an attempt is made
2268 to dereference a reference (created by the Index operator) to a NULL
2269 package element. Provides compatibility with other ACPI implementations,
2270 and this behavior will be added to a future version of the ACPI
2273 The ACPI Power Management Timer (defined in the FADT) is now optional.
2274 This provides compatibility with other ACPI implementations and will
2275 appear in the next version of the ACPI specification. If there is no PM
2276 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
2277 zero in the FADT indicates no PM timer.
2279 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
2280 allows the host to globally enable/disable all vendor strings, all
2281 feature strings, or both. Intended to be primarily used for debugging
2282 purposes only. Lv Zheng.
2284 Expose the collected _OSI data to the host via a global variable. This
2285 data tracks the highest level vendor ID that has been invoked by the BIOS
2286 so that the host (and potentially ACPICA itself) can change behaviors
2287 based upon the age of the BIOS.
2289 Example Code and Data Size: These are the sizes for the OS-independent
2290 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2291 debug version of the code includes the debug output trace mechanism and
2292 has a much larger code and data size.
2295 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
2296 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
2298 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2299 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2302 2) iASL Compiler/Disassembler and Tools:
2304 iASL: Created the following enhancements for the -so option (create
2306 1)Add offsets for the last nameseg in each namepath for every supported
2308 2)Add support for Processor, Device, Thermal Zone, and Scope objects
2309 3)Add the actual AML opcode for the parent object of every supported
2311 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
2313 Disassembler: Emit all unresolved external symbols in a single block.
2314 These are external references to control methods that could not be
2315 resolved, and thus, the disassembler had to make a guess at the number of
2318 iASL: The argument to the -T option (create table template) is now
2319 optional. If not specified, the default table is a DSDT, typically the
2322 ----------------------------------------
2323 26 June 2013. Summary of changes for version 20130626:
2325 1) ACPICA kernel-resident subsystem:
2327 Fixed an issue with runtime repair of the _CST object. Null or invalid
2328 elements were not always removed properly. Lv Zheng.
2330 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
2331 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
2332 the maximum number of GPEs is 1016. Use of multiple GPE block devices
2333 makes the system-wide number of GPEs essentially unlimited.
2335 Example Code and Data Size: These are the sizes for the OS-independent
2336 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2337 debug version of the code includes the debug output trace mechanism and
2338 has a much larger code and data size.
2341 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
2342 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
2344 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2345 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2348 2) iASL Compiler/Disassembler and Tools:
2350 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
2351 hosts. Now supports Linux, FreeBSD, and Windows.
2353 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
2354 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
2356 iASL/Preprocessor: Implemented full support for nested
2357 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
2359 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
2360 max. The original purpose of this constraint was to limit the amount of
2361 debug output. However, the string function in question (UtPrintString) is
2362 now used for the disassembler also, where 256 bytes is insufficient.
2363 Reported by RehabMan@GitHub.
2365 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
2366 tables. ACPICA BZ 999. Lv Zheng.
2368 iASL: Fixed a couple of error exit issues that could result in a "Could
2369 not delete <file>" message during ASL compilation.
2371 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
2372 the actual signatures for these tables are "FACP" and "APIC",
2375 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
2376 tables are allowed to have multiple instances.
2378 ----------------------------------------
2379 17 May 2013. Summary of changes for version 20130517:
2381 1) ACPICA kernel-resident subsystem:
2383 Fixed a regression introduced in version 20130328 for _INI methods. This
2384 change fixes a problem introduced in 20130328 where _INI methods are no
2385 longer executed properly because of a memory block that was not
2386 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
2387 <tomasz.nowicki@linaro.org>.
2389 Fixed a possible problem with the new extended sleep registers in the
2391 5.0 FADT. Do not use these registers (even if populated) unless the HW-
2392 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
2395 Implemented return value repair code for _CST predefined objects: Sort
2397 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
2399 Implemented a debug-only option to disable loading of SSDTs from the
2400 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
2401 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
2402 acglobal.h - ACPICA BZ 1005. Lv Zheng.
2404 Fixed some issues in the ACPICA initialization and termination code:
2405 Tomasz Nowicki <tomasz.nowicki@linaro.org>
2406 1) Clear events initialized flag upon event component termination. ACPICA
2408 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
2409 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
2410 4) Clear debug buffer global on termination to prevent possible multiple
2411 delete. ACPICA BZ 1010.
2413 Standardized all switch() blocks across the entire source base. After
2415 years, different formatting for switch() had crept in. This change makes
2416 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
2418 Split some files to enhance ACPICA modularity and configurability:
2419 1) Split buffer dump routines into utilities/utbuffer.c
2420 2) Split internal error message routines into utilities/uterror.c
2421 3) Split table print utilities into tables/tbprint.c
2422 4) Split iASL command-line option processing into asloptions.c
2424 Makefile enhancements:
2425 1) Support for all new files above.
2426 2) Abort make on errors from any subcomponent. Chao Guan.
2427 3) Add build support for Apple Mac OS X. Liang Qi.
2429 Example Code and Data Size: These are the sizes for the OS-independent
2430 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2431 debug version of the code includes the debug output trace mechanism and
2432 has a much larger code and data size.
2435 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
2436 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
2438 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2439 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2442 2) iASL Compiler/Disassembler and Tools:
2444 New utility: Implemented an easily portable version of the acpidump
2445 utility to extract ACPI tables from the system (or a file) in an ASCII
2447 dump format. The top-level code implements the various command line
2448 options, file I/O, and table dump routines. To port to a new host, only
2449 three functions need to be implemented to get tables -- since this
2450 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
2451 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
2452 1) The Windows version obtains the ACPI tables from the Registry.
2453 2) The Linux version is under development.
2454 3) Other hosts - If an OS-dependent module is submitted, it will be
2455 distributed with ACPICA.
2457 iASL: Fixed a regression for -D preprocessor option (define symbol). A
2458 restructuring/change to the initialization sequence caused this option to
2459 no longer work properly.
2461 iASL: Implemented a mechanism to disable specific warnings and remarks.
2462 Adds a new command line option, "-vw <messageid> as well as "#pragma
2463 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
2465 iASL: Fix for too-strict package object validation. The package object
2466 validation for return values from the predefined names is a bit too
2467 strict, it does not allow names references within the package (which will
2468 be resolved at runtime.) These types of references cannot be validated at
2469 compile time. This change ignores named references within package objects
2470 for names that return or define static packages.
2472 Debugger: Fixed the 80-character command line limitation for the History
2473 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
2475 iASL: Added control method and package support for the -so option
2476 (generates AML offset table for BIOS support.)
2478 iASL: issue a remark if a non-serialized method creates named objects. If
2479 a thread blocks within the method for any reason, and another thread
2480 enters the method, the method will fail because an attempt will be made
2482 create the same (named) object twice. In this case, issue a remark that
2483 the method should be marked serialized. NOTE: may become a warning later.
2486 ----------------------------------------
2487 18 April 2013. Summary of changes for version 20130418:
2489 1) ACPICA kernel-resident subsystem:
2491 Fixed a possible buffer overrun during some rare but specific field unit
2492 read operations. This overrun can only happen if the DSDT version is 1 --
2493 meaning that all AML integers are 32 bits -- and the field length is
2494 between 33 and 55 bits long. During the read, an internal buffer object
2496 created for the field unit because the field is larger than an integer
2498 bits). However, in this case, the buffer will be incorrectly written
2499 beyond the end because the buffer length is less than the internal
2501 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
2502 long, but a full 8 bytes will be written.
2504 Updated the Embedded Controller "orphan" _REG method support. This refers
2505 to _REG methods under the EC device that have no corresponding operation
2506 region. This is allowed by the ACPI specification. This update removes a
2507 dependency on the existence an ECDT table. It will execute an orphan _REG
2508 method as long as the operation region handler for the EC is installed at
2509 the EC device node and not the namespace root. Rui Zhang (original
2510 update), Bob Moore (update/integrate).
2512 Implemented run-time argument typechecking for all predefined ACPI names
2513 (_STA, _BIF, etc.) This change performs object typechecking on all
2514 incoming arguments for all predefined names executed via
2515 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
2516 passing correct object types as well as the correct number of arguments
2517 (therefore identifying any issues immediately). Also, the ASL/namespace
2518 definition of the predefined name is checked against the ACPI
2519 specification for the proper argument count. Adds one new file,
2522 Changed an exception code for the ASL UnLoad() operator. Changed the
2523 exception code for the case where the input DdbHandle is invalid, from
2524 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
2526 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
2527 global makefile. The use of this flag causes compiler errors on earlier
2528 versions of GCC, so it has been removed for compatibility.
2530 Miscellaneous cleanup:
2531 1) Removed some unused/obsolete macros
2532 2) Fixed a possible memory leak in the _OSI support
2533 3) Removed an unused variable in the predefined name support
2534 4) Windows OSL: remove obsolete reference to a memory list field
2536 Example Code and Data Size: These are the sizes for the OS-independent
2537 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2538 debug version of the code includes the debug output trace mechanism and
2539 has a much larger code and data size.
2542 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2543 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2545 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
2546 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
2549 2) iASL Compiler/Disassembler and Tools:
2551 AcpiExec: Added installation of a handler for the SystemCMOS address
2552 space. This prevents control method abort if a method accesses this
2555 AcpiExec: Added support for multiple EC devices, and now install EC
2556 operation region handler(s) at the actual EC device instead of the
2557 namespace root. This reflects the typical behavior of host operating
2560 AcpiExec: Updated to ensure that all operation region handlers are
2561 installed before the _REG methods are executed. This prevents a _REG
2562 method from aborting if it accesses an address space has no handler.
2563 AcpiExec installs a handler for every possible address space.
2565 Debugger: Enhanced the "handlers" command to display non-root handlers.
2566 This change enhances the handlers command to display handlers associated
2567 with individual devices throughout the namespace, in addition to the
2568 currently supported display of handlers associated with the root
2572 ASL Test Suite: Several test suite errors have been identified and
2573 resolved, reducing the total error count during execution. Chao Guan.
2575 ----------------------------------------
2576 28 March 2013. Summary of changes for version 20130328:
2578 1) ACPICA kernel-resident subsystem:
2580 Fixed several possible race conditions with the internal object reference
2581 counting mechanism. Some of the external ACPICA interfaces update object
2582 reference counts without holding the interpreter or namespace lock. This
2583 change adds a spinlock to protect reference count updates on the internal
2584 ACPICA objects. Reported by and with assistance from Andriy Gapon
2587 FADT support: Removed an extraneous warning for very large GPE register
2588 sets. This change removes a size mismatch warning if the legacy length
2589 field for a GPE register set is larger than the 64-bit GAS structure can
2590 accommodate. GPE register sets can be larger than the 255-bit width
2591 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
2593 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
2594 return from this interface. Handles a possible timeout case if
2595 ACPI_WAIT_FOREVER is modified by the host to be a value less than
2596 "forever". Jung-uk Kim.
2598 Predefined name support: Add allowed/required argument type information
2600 the master predefined info table. This change adds the infrastructure to
2601 enable typechecking on incoming arguments for all predefined
2602 methods/objects. It does not actually contain the code that will fully
2603 utilize this information, this is still under development. Also condenses
2604 some duplicate code for the predefined names into a new module,
2605 utilities/utpredef.c
2607 Example Code and Data Size: These are the sizes for the OS-independent
2608 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2609 debug version of the code includes the debug output trace mechanism and
2610 has a much larger code and data size.
2613 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2614 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2616 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
2617 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
2620 2) iASL Compiler/Disassembler and Tools:
2622 iASL: Implemented a new option to simplify the development of ACPI-
2624 BIOS code. Adds support for a new "offset table" output file. The -so
2625 option will create a C table containing the AML table offsets of various
2626 named objects in the namespace so that BIOS code can modify them easily
2628 boot time. This can simplify BIOS runtime code by eliminating expensive
2629 searches for "magic values", enhancing boot times and adding greater
2630 reliability. With assistance from Lee Hamel.
2632 iASL: Allow additional predefined names to return zero-length packages.
2633 Now, all predefined names that are defined by the ACPI specification to
2634 return a "variable-length package of packages" are allowed to return a
2635 zero length top-level package. This allows the BIOS to tell the host that
2636 the requested feature is not supported, and supports existing BIOS/ASL
2639 iASL: Changed the "result not used" warning to an error. This is the case
2640 where an ASL operator is effectively a NOOP because the result of the
2641 operation is not stored anywhere. For example:
2643 There is no target (missing 3rd argument), nor is the function return
2644 value used. This is potentially a very serious problem -- since the code
2645 was probably intended to do something, but for whatever reason, the value
2646 was not stored. Therefore, this issue has been upgraded from a warning to
2649 AcpiHelp: Added allowable/required argument types to the predefined names
2650 info display. This feature utilizes the recent update to the predefined
2651 names table (above).
2653 ----------------------------------------
2654 14 February 2013. Summary of changes for version 20130214:
2656 1) ACPICA Kernel-resident Subsystem:
2658 Fixed a possible regression on some hosts: Reinstated the safe return
2659 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
2660 evaluated only once. Although these macros are not needed for the ACPICA
2661 code itself, they are often used by ACPI-related host device drivers
2663 the safe feature may be necessary.
2665 Fixed several issues related to the ACPI 5.0 reduced hardware support
2666 (SOC): Now ensure that if the platform declares itself as hardware-
2668 via the FADT, the following functions become NOOPs (and always return
2669 AE_OK) because ACPI is always enabled by definition on these machines:
2675 Dynamic Object Repair: Implemented additional runtime repairs for
2676 predefined name return values. Both of these repairs can simplify code in
2677 the related device drivers that invoke these methods:
2678 1) For the _STR and _MLS names, automatically repair/convert an ASCII
2679 string to a Unicode buffer.
2680 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
2682 lone end tag descriptor in the following cases: A Return(0) was executed,
2683 a null buffer was returned, or no object at all was returned (non-slack
2684 mode only). Adds a new file, nsconvert.c
2685 ACPICA BZ 998. Bob Moore, Lv Zheng.
2687 Resource Manager: Added additional code to prevent possible infinite
2689 while traversing corrupted or ill-formed resource template buffers. Check
2690 for zero-length resource descriptors in all code that loops through
2691 resource templates (the length field is used to index through the
2692 template). This change also hardens the external AcpiWalkResources and
2693 AcpiWalkResourceBuffer interfaces.
2695 Local Cache Manager: Enhanced the main data structure to eliminate an
2696 unnecessary mechanism to access the next object in the list. Actually
2697 provides a small performance enhancement for hosts that use the local
2698 ACPICA cache manager. Jung-uk Kim.
2700 Example Code and Data Size: These are the sizes for the OS-independent
2701 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2702 debug version of the code includes the debug output trace mechanism and
2703 has a much larger code and data size.
2706 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2707 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2709 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2710 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2713 2) iASL Compiler/Disassembler and Tools:
2715 iASL/Disassembler: Fixed several issues with the definition of the ACPI
2716 5.0 RASF table (RAS Feature Table). This change incorporates late changes
2717 that were made to the ACPI 5.0 specification.
2719 iASL/Disassembler: Added full support for the following new ACPI tables:
2720 1) The MTMR table (MID Timer Table)
2721 2) The VRTC table (Virtual Real Time Clock Table).
2722 Includes header file, disassembler, table compiler, and template support
2725 iASL: Implemented compile-time validation of package objects returned by
2726 predefined names. This new feature validates static package objects
2727 returned by the various predefined names defined to return packages. Both
2728 object types and package lengths are validated, for both parent packages
2729 and sub-packages, if any. The code is similar in structure and behavior
2731 the runtime repair mechanism within the AML interpreter and uses the
2732 existing predefined name information table. Adds a new file, aslprepkg.c.
2735 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
2736 This feature detects a binary file with a valid ACPI table header and
2737 invokes the disassembler automatically. Eliminates the need to
2738 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
2740 iASL/Disassembler: Added several warnings for the case where there are
2741 unresolved control methods during the disassembly. This can potentially
2742 cause errors when the output file is compiled, because the disassembler
2743 assumes zero method arguments in these cases (it cannot determine the
2744 actual number of arguments without resolution/definition of the method).
2746 Debugger: Added support to display all resources with a single command.
2747 Invocation of the resources command with no arguments will now display
2749 resources within the current namespace.
2751 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
2754 ----------------------------------------
2755 17 January 2013. Summary of changes for version 20130117:
2757 1) ACPICA Kernel-resident Subsystem:
2759 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
2760 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
2761 objects to return a package containing one integer, most BIOS code
2763 two integers and the previous code reflects that. However, we also need
2765 support BIOS code that actually implements to the ACPI spec, and this
2766 change reflects this.
2768 Fixed two issues with the ACPI_DEBUG_PRINT macros:
2769 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
2770 C compilers that require this support.
2771 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
2772 ACPI_DEBUG is already used by many of the various hosts.
2774 Updated all ACPICA copyrights and signons to 2013. Added the 2013
2775 copyright to all module headers and signons, including the standard Linux
2776 header. This affects virtually every file in the ACPICA core subsystem,
2777 iASL compiler, all ACPICA utilities, and the test suites.
2779 Example Code and Data Size: These are the sizes for the OS-independent
2780 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2781 debug version of the code includes the debug output trace mechanism and
2782 has a much larger code and data size.
2785 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2786 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2788 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2789 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2792 2) iASL Compiler/Disassembler and Tools:
2794 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
2795 prevent a possible fault on some hosts. Some C libraries modify the arg
2796 pointer parameter to vfprintf making it difficult to call it twice in the
2797 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
2798 does not affect the Windows OSL since the Win C library does not modify
2799 the arg pointer. Chao Guan, Bob Moore.
2801 iASL: Fixed a possible infinite loop when the maximum error count is
2802 reached. If an output file other than the .AML file is specified (such as
2803 a listing file), and the maximum number of errors is reached, do not
2804 attempt to flush data to the output file(s) as the compiler is aborting.
2805 This can cause an infinite loop as the max error count code essentially
2806 keeps calling itself.
2808 iASL/Disassembler: Added an option (-in) to ignore NOOP
2810 Implemented for both the compiler and the disassembler. Often, the NOOP
2811 opcode is used as padding for packages that are changed dynamically by
2813 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
2814 errors. This option causes the disassembler to ignore all NOOP opcodes
2815 (0xA3), and it also causes the compiler to ignore all ASL source code
2819 Debugger: Enhanced the Sleep command to execute all sleep states. This
2820 change allows Sleep to be invoked with no arguments and causes the
2821 debugger to execute all of the sleep states, 0-5, automatically.
2823 ----------------------------------------
2824 20 December 2012. Summary of changes for version 20121220:
2826 1) ACPICA Kernel-resident Subsystem:
2828 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
2829 alternate entry point for AcpiWalkResources and improves the usability of
2830 the resource manager by accepting as input a buffer containing the output
2831 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
2832 input buffer is not deleted by this interface so that it can be used by
2833 the host later. See the ACPICA reference for details.
2835 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
2836 (DSDT version < 2). The constant will be truncated and this warning
2837 reflects that behavior.
2839 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
2840 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
2841 both get and set the new wake bit in these descriptors, separately from
2842 the existing share bit. Reported by Aaron Lu.
2844 Interpreter: Fix Store() when an implicit conversion is not possible. For
2845 example, in the cases such as a store of a string to an existing package
2846 object, implement the store as a CopyObject(). This is a small departure
2847 from the ACPI specification which states that the control method should
2849 aborted in this case. However, the ASLTS suite depends on this behavior.
2851 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
2852 macros: check if debug output is currently enabled as soon as possible to
2853 minimize performance impact if debug is in fact not enabled.
2855 Source code restructuring: Cleanup to improve modularity. The following
2856 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
2857 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
2858 Associated makefiles and project files have been updated.
2860 Changed an exception code for LoadTable operator. For the case where one
2861 of the input strings is too long, change the returned exception code from
2862 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
2864 Fixed a possible memory leak in dispatcher error path. On error, delete
2865 the mutex object created during method mutex creation. Reported by
2866 tim.gardner@canonical.com.
2868 Example Code and Data Size: These are the sizes for the OS-independent
2869 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2870 debug version of the code includes the debug output trace mechanism and
2871 has a much larger code and data size.
2874 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2875 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2877 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2878 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2881 2) iASL Compiler/Disassembler and Tools:
2883 iASL: Disallow a method call as argument to the ObjectType ASL operator.
2884 This change tracks an errata to the ACPI 5.0 document. The AML grammar
2885 will not allow the interpreter to differentiate between a method and a
2886 method invocation when these are used as an argument to the ObjectType
2887 operator. The ACPI specification change is to disallow a method
2889 (UserTerm) for the ObjectType operator.
2891 Finish support for the TPM2 and CSRT tables in the headers, table
2892 compiler, and disassembler.
2894 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
2895 always expires immediately if the semaphore is not available. The
2897 code was using a relative-time timeout, but sem_timedwait requires the
2899 of an absolute time.
2901 iASL: Added a remark if the Timer() operator is used within a 32-bit
2902 table. This operator returns a 64-bit time value that will be truncated
2903 within a 32-bit table.
2905 iASL Source code restructuring: Cleanup to improve modularity. The
2906 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
2907 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
2911 ----------------------------------------
2912 14 November 2012. Summary of changes for version 20121114:
2914 1) ACPICA Kernel-resident Subsystem:
2916 Implemented a performance enhancement for ACPI/AML Package objects. This
2917 change greatly increases the performance of Package objects within the
2918 interpreter. It changes the processing of reference counts for packages
2920 optimizing for the most common case where the package sub-objects are
2921 either Integers, Strings, or Buffers. Increases the overall performance
2923 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
2925 Chao Guan. ACPICA BZ 943.
2927 Implemented and deployed common macros to extract flag bits from resource
2928 descriptors. Improves readability and maintainability of the code. Fixes
2930 problem with the UART serial bus descriptor for the number of data bits
2931 flags (was incorrectly 2 bits, should be 3).
2933 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
2934 of the macros and changed the SETx macros to the style of (destination,
2935 source). Also added ACPI_CASTx companion macros. Lv Zheng.
2937 Example Code and Data Size: These are the sizes for the OS-independent
2938 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2939 debug version of the code includes the debug output trace mechanism and
2940 has a much larger code and data size.
2943 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2944 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2946 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2947 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2950 2) iASL Compiler/Disassembler and Tools:
2952 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
2953 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
2954 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
2956 Disassembler: Fixed a problem with external declaration generation. Fixes
2957 a problem where an incorrect pathname could be generated for an external
2958 declaration if the original reference to the object includes leading
2959 carats (^). ACPICA BZ 984.
2961 Debugger: Completed a major update for the Disassemble<method> command.
2962 This command was out-of-date and did not properly disassemble control
2963 methods that had any reasonable complexity. This fix brings the command
2965 to the same level as the rest of the disassembler. Adds one new file,
2966 dmdeferred.c, which is existing code that is now common with the main
2967 disassembler and the debugger disassemble command. ACPICA MZ 978.
2969 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
2970 Newer versions of Bison emit this prototype, so moved the prototype out
2972 the iASL header to where it is actually used in order to avoid a
2976 iASL/Tools: Standardized use of the stream I/O functions:
2977 1) Ensure check for I/O error after every fopen/fread/fwrite
2978 2) Ensure proper order of size/count arguments for fread/fwrite
2979 3) Use test of (Actual != Requested) after all fwrite, and most fread
2980 4) Standardize I/O error messages
2981 Improves reliability and maintainability of the code. Bob Moore, Lv
2985 Disassembler: Prevent duplicate External() statements. During generation
2986 of external statements, detect similar pathnames that are actually
2987 duplicates such as these:
2990 Remove all leading '\' characters from pathnames during the external
2991 statement generation so that duplicates will be detected and tossed.
2994 Tools: Replace low-level I/O with stream I/O functions. Replace
2995 open/read/write/close with the stream I/O equivalents
2996 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
2999 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
3000 name header so that AcpiXtract recognizes the output file/table.
3002 iASL: Remove obsolete -2 option flag. Originally intended to force the
3003 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
3004 and the entire concept is now obsolete.
3006 ----------------------------------------
3007 18 October 2012. Summary of changes for version 20121018:
3010 1) ACPICA Kernel-resident Subsystem:
3012 Updated support for the ACPI 5.0 MPST table. Fixes some problems
3013 introduced by late changes to the table as it was added to the ACPI 5.0
3014 specification. Includes header, disassembler, and data table compiler
3015 support as well as a new version of the MPST template.
3017 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
3018 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
3019 methods: _HID, _CID, and _UID.
3021 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
3022 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
3023 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
3024 names for their various drivers. Affects the AcpiGetObjectInfo external
3025 interface, and other internal interfaces as well.
3027 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
3028 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
3029 on machines that support non-aligned transfers. Optimizes for this case
3030 rather than using a strncpy. With assistance from Zheng Lv.
3032 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
3033 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
3035 Added a new debug print message for AML mutex objects that are force-
3036 released. At control method termination, any currently acquired mutex
3037 objects are force-released. Adds a new debug-only message for each one
3040 Audited/updated all ACPICA return macros and the function debug depth
3041 counter: 1) Ensure that all functions that use the various TRACE macros
3042 also use the appropriate ACPICA return macros. 2) Ensure that all normal
3043 return statements surround the return expression (value) with parens to
3044 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
3045 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
3047 Global source code changes/maintenance: All extra lines at the start and
3048 end of each source file have been removed for consistency. Also, within
3049 comments, all new sentences start with a single space instead of a double
3050 space, again for consistency across the code base.
3052 Example Code and Data Size: These are the sizes for the OS-independent
3053 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3054 debug version of the code includes the debug output trace mechanism and
3055 has a much larger code and data size.
3058 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3059 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3061 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
3062 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3065 2) iASL Compiler/Disassembler and Tools:
3067 AcpiExec: Improved the algorithm used for memory leak/corruption
3068 detection. Added some intelligence to the code that maintains the global
3069 list of allocated memory. The list is now ordered by allocated memory
3070 address, significantly improving performance. When running AcpiExec on
3071 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
3072 on the platform and/or the environment. Note, this performance
3073 enhancement affects the AcpiExec utility only, not the kernel-resident
3076 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
3077 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
3078 incorrect table offset reported for invalid opcodes. Report the original
3079 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
3081 Disassembler: Enhanced the -vt option to emit the binary table data in
3082 hex format to assist with debugging.
3084 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
3085 size of file structure. Colin Ian King.
3087 ----------------------------------------
3088 13 September 2012. Summary of changes for version 20120913:
3091 1) ACPICA Kernel-resident Subsystem:
3093 ACPI 5.0: Added two new notify types for the Hardware Error Notification
3094 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
3098 Table Manager: Merged/removed duplicate code in the root table resize
3099 functions. One function is external, the other is internal. Lv Zheng,
3103 Makefiles: Completely removed the obsolete "Linux" makefiles under
3104 acpica/generate/linux. These makefiles are obsolete and have been
3107 the generic unix makefiles under acpica/generate/unix.
3109 Makefiles: Ensure that binary files always copied properly. Minor rule
3111 to ensure that the final binary output files are always copied up to the
3112 appropriate binary directory (bin32 or bin64.)
3114 Example Code and Data Size: These are the sizes for the OS-independent
3115 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3117 version of the code includes the debug output trace mechanism and has a
3119 larger code and data size.
3122 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3123 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3125 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
3126 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
3129 2) iASL Compiler/Disassembler and Tools:
3131 Disassembler: Fixed a possible fault during the disassembly of resource
3132 descriptors when a second parse is required because of the invocation of
3133 external control methods within the table. With assistance from
3134 adq@lidskialf.net. ACPICA BZ 976.
3136 iASL: Fixed a namepath optimization problem. An error can occur if the
3138 node that contains the namepath to be optimized does not have a parent
3140 that is a named object. This change fixes the problem.
3142 iASL: Fixed a regression where the AML file is not deleted on errors. The
3144 output file should be deleted if there are any errors during the
3147 only exception is if the -f (force output) option is used. ACPICA BZ 974.
3149 iASL: Added a feature to automatically increase internal line buffer
3151 Via realloc(), automatically increase the internal line buffer sizes as
3152 necessary to support very long source code lines. The current version of
3154 preprocessor requires a buffer long enough to contain full source code
3156 This change increases the line buffer(s) if the input lines go beyond the
3157 current buffer size. This eliminates errors that occurred when a source
3159 line was longer than the buffer.
3161 iASL: Fixed a problem with constant folding in method declarations. The
3162 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
3164 Type3 opcode was used.
3166 Debugger: Improved command help support. For incorrect argument count,
3168 full help for the command. For help command itself, allow an argument to
3171 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
3172 errors during execution of the suite. Guan Chao.
3174 ----------------------------------------
3175 16 August 2012. Summary of changes for version 20120816:
3178 1) ACPICA Kernel-resident Subsystem:
3180 Removed all use of the deprecated _GTS and _BFS predefined methods. The
3182 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
3183 deprecated and will probably be removed from the ACPI specification.
3185 does not invoke them, and reportedly never will. The final nail in the
3187 is that the ACPI specification states that these methods must be run with
3188 interrupts off, which is not going to happen in a kernel interpreter.
3190 Linux has removed all use of the methods also. It was discovered that
3191 invoking these functions caused failures on some machines, probably
3193 they were never tested since Windows does not call them. Affects two
3195 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
3198 Implemented support for complex bit-packed buffers returned from the _PLD
3199 (Physical Location of Device) predefined method. Adds a new external
3200 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
3202 structure. Note: C Bitfields cannot be used for this type of predefined
3203 structure since the memory layout of individual bitfields is not defined
3205 the C language. In addition, there are endian concerns where a compiler
3207 change the bitfield ordering based on the machine type. The new ACPICA
3208 interface eliminates these issues, and should be called after _PLD is
3209 executed. ACPICA BZ 954.
3211 Implemented a change to allow a scope change to root (via "Scope (\)")
3213 execution of module-level ASL code (code that is executed at table load
3216 Added the Windows8/Server2012 string for the _OSI method. This change
3219 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
3222 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
3224 and CSRT (Core System Resource Table).
3226 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
3227 names. This simplifies access to the buffers returned by these predefined
3228 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
3230 GPE support: Removed an extraneous parameter from the various low-level
3231 internal GPE functions. Tang Feng.
3233 Removed the linux makefiles from the unix packages. The generate/linux
3234 makefiles are obsolete and have been removed from the unix tarball
3236 packages. The replacement makefiles are under generate/unix, and there is
3238 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
3240 Updates for Unix makefiles:
3241 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
3242 2) Update linker flags (move to end of command line) for AcpiExec
3246 Split ACPICA initialization functions to new file, utxfinit.c. Split from
3247 utxface.c to improve modularity and reduce file size.
3249 Example Code and Data Size: These are the sizes for the OS-independent
3250 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3251 debug version of the code includes the debug output trace mechanism and
3253 much larger code and data size.
3256 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3257 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3259 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
3260 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
3263 2) iASL Compiler/Disassembler and Tools:
3265 iASL: Fixed a problem with constant folding for fixed-length constant
3266 expressions. The constant-folding code was not being invoked for constant
3267 expressions that allow the use of type 3/4/5 opcodes to generate
3269 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
3271 in the generation of invalid AML bytecode. ACPICA BZ 970.
3273 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
3274 apparently automatically emit some of the necessary externals. This
3276 handles these versions in order to eliminate generation warnings.
3278 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
3280 Disassembler: Add support to decode _PLD buffers. The decoded buffer
3282 within comments in the output file.
3284 Debugger: Fixed a regression with the "Threads" command where
3285 AE_BAD_PARAMETER was always returned.
3287 ----------------------------------------
3288 11 July 2012. Summary of changes for version 20120711:
3290 1) ACPICA Kernel-resident Subsystem:
3292 Fixed a possible fault in the return package object repair code. Fixes a
3293 problem that can occur when a lone package object is wrapped with an
3295 package object in order to force conformance to the ACPI specification.
3297 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
3301 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
3302 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
3303 ARB_DIS bit must be implemented in the host-dependent C3 processor power
3305 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
3307 Intel and other vendors. (for Intel: ICH4-M and earlier)
3309 This change removes the code to disable/enable bus master arbitration
3311 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
3313 resume problems on some machines. The change has been in use for over
3317 Implemented two new external interfaces to support host-directed dynamic
3319 table load and unload. They are intended to simplify the host
3321 of hot-plug support:
3322 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
3323 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
3325 See the ACPICA reference for additional details. Adds one new file,
3326 components/tables/tbxfload.c
3328 Implemented and deployed two new interfaces for errors and warnings that
3330 known to be caused by BIOS/firmware issues:
3331 AcpiBiosError: Prints "ACPI Firmware Error" message.
3332 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
3333 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
3335 and FADT errors. Additional deployment to be completed as appropriate in
3337 future. The associated conditional macros are ACPI_BIOS_ERROR and
3338 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
3343 Implicit notify support: ensure that no memory allocation occurs within a
3344 critical region. This fix moves a memory allocation outside of the time
3346 spinlock is held. Fixes issues on systems that do not allow this
3350 Split exception code utilities and tables into a new file,
3353 Example Code and Data Size: These are the sizes for the OS-independent
3354 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3356 version of the code includes the debug output trace mechanism and has a
3358 larger code and data size.
3361 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3362 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3364 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
3365 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
3368 2) iASL Compiler/Disassembler and Tools:
3370 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
3374 Debugger: Enhanced the "tables" command to emit additional information
3376 the current set of ACPI tables, including the owner ID and flags decode.
3378 Debugger: Reimplemented the "unload" command to use the new
3379 AcpiUnloadParentTable external interface. This command was disable
3381 due to need for an unload interface.
3383 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
3385 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
3387 ----------------------------------------
3388 20 June 2012. Summary of changes for version 20120620:
3391 1) ACPICA Kernel-resident Subsystem:
3393 Implemented support to expand the "implicit notify" feature to allow
3395 devices to be notified by a single GPE. This feature automatically
3397 runtime device notification in the absence of a BIOS-provided GPE control
3398 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
3400 provided by ACPICA for Windows compatibility, and is a workaround for
3403 code errors. See the description of the AcpiSetupGpeForWake interface in
3405 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
3407 Changed some comments and internal function names to simplify and ensure
3408 correctness of the Linux code translation. No functional changes.
3410 Example Code and Data Size: These are the sizes for the OS-independent
3411 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3413 version of the code includes the debug output trace mechanism and has a
3415 larger code and data size.
3418 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3419 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3421 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
3422 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
3425 2) iASL Compiler/Disassembler and Tools:
3427 Disassembler: Added support to emit short, commented descriptions for the
3429 predefined names in order to improve the readability of the disassembled
3430 output. ACPICA BZ 959. Changes include:
3431 1) Emit descriptions for all standard predefined names (_INI, _STA,
3434 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
3435 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
3438 AcpiSrc: Fixed several long-standing Linux code translation issues.
3440 descriptions in function headers are now translated properly to lower
3443 underscores. ACPICA BZ 961. Also fixes translation problems such as
3449 local_fADT -> local_FADT
3450 execute_oSI -> execute_OSI
3452 iASL: Fixed a problem where null bytes were inadvertently emitted into
3456 iASL: Added the existing debug options to the standard help screen. There
3458 no longer two different help screens. ACPICA BZ 957.
3460 AcpiHelp: Fixed some typos in the various predefined name descriptions.
3462 expand some of the descriptions where appropriate.
3464 iASL: Fixed the -ot option (display compile times/statistics). Was not
3466 properly for standard output; only worked for the debug file case.
3468 ----------------------------------------
3469 18 May 2012. Summary of changes for version 20120518:
3472 1) ACPICA Core Subsystem:
3474 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
3476 to block until asynchronous events such as notifies and GPEs have
3478 Within ACPICA, it is only called before a notify or GPE handler is
3479 removed/uninstalled. It also may be useful for the host OS within related
3480 drivers such as the Embedded Controller driver. See the ACPICA reference
3482 additional information. ACPICA BZ 868.
3484 ACPI Tables: Added a new error message for a possible overflow failure
3486 the conversion of FADT 32-bit legacy register addresses to internal
3489 bit GAS structure representation. The GAS has a one-byte "bit length"
3491 thus limiting the register length to 255 bits. ACPICA BZ 953.
3493 Example Code and Data Size: These are the sizes for the OS-independent
3494 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3496 version of the code includes the debug output trace mechanism and has a
3498 larger code and data size.
3501 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3502 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3504 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
3505 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
3508 2) iASL Compiler/Disassembler and Tools:
3510 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
3512 This keyword was added late in the ACPI 5.0 release cycle and was not
3513 implemented until now.
3515 Disassembler: Added support for Operation Region externals. Adds missing
3516 support for operation regions that are defined in another table, and
3517 referenced locally via a Field or BankField ASL operator. Now generates
3519 correct External statement.
3521 Disassembler: Several additional fixes for the External() statement
3523 related to some ASL operators. Also, order the External() statements
3524 alphabetically in the disassembler output. Fixes the External()
3527 the Create* field, Alias, and Scope operators:
3528 1) Create* buffer field operators - fix type mismatch warning on
3530 2) Alias - implement missing External support
3531 3) Scope - fix to make sure all necessary externals are emitted.
3533 iASL: Improved pathname support. For include files, merge the prefix
3535 with the file pathname and eliminate unnecessary components. Convert
3536 backslashes in all pathnames to forward slashes, for readability. Include
3538 pathname changes affect both #include and Include() type operators.
3540 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
3542 of a valid line by inserting a newline and then returning the EOF during
3544 next call to GetNextLine. Prevents the line from being ignored due to EOF
3547 iASL: Implemented some changes to enhance the IDE support (-vi option.)
3549 and Warning messages are now correctly recognized for both the source
3551 browser and the global error and warning counts.
3553 ----------------------------------------
3554 20 April 2012. Summary of changes for version 20120420:
3557 1) ACPICA Core Subsystem:
3559 Implemented support for multiple notify handlers. This change adds
3562 allow multiple system and device notify handlers on Device, Thermal Zone,
3564 Processor objects. This can simplify the host OS notification
3566 Also re-worked and restructured the entire notify support code to
3568 handler installation, handler removal, notify event queuing, and notify
3569 dispatch to handler(s). Note: there can still only be two global notify
3570 handlers - one for system notifies and one for device notifies. There are
3572 changes to the existing handler install/remove interfaces. Lin Ming, Bob
3573 Moore, Rafael Wysocki.
3575 Fixed a regression in the package repair code where the object reference
3576 count was calculated incorrectly. Regression was introduced in the commit
3577 "Support to add Package wrappers".
3579 Fixed a couple possible memory leaks in the AML parser, in the error
3581 path. Jesper Juhl, Lin Ming.
3583 Example Code and Data Size: These are the sizes for the OS-independent
3584 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3585 debug version of the code includes the debug output trace mechanism and
3587 much larger code and data size.
3590 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3591 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3593 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3594 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
3597 2) iASL Compiler/Disassembler and Tools:
3599 iASL: Fixed a problem with the resource descriptor support where the
3601 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
3602 included in cumulative descriptor offset, resulting in incorrect values
3604 resource tags within resource descriptors appearing after a
3606 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
3608 iASL and Preprocessor: Implemented full support for the #line directive
3610 correctly track original source file line numbers through the .i
3612 output file - for error and warning messages.
3614 iASL: Expand the allowable byte constants for address space IDs.
3616 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
3617 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
3619 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
3621 iASL: Add option to completely disable the preprocessor (-Pn).
3623 iASL: Now emit all error/warning messages to standard error (stderr) by
3624 default (instead of the previous stdout).
3626 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
3628 for resource descriptor offset fix above. Update/cleanup error output
3629 routines. Enable and send iASL errors/warnings to an error logfile
3630 (error.txt). Send all other iASL output to a logfile (compiler.txt).
3632 several extraneous "unrecognized operator" messages.
3634 ----------------------------------------
3635 20 March 2012. Summary of changes for version 20120320:
3638 1) ACPICA Core Subsystem:
3640 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
3641 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
3643 does not execute these methods, and therefore these methods are often
3644 untested. It has been seen on some systems where the execution of these
3645 methods causes errors and also prevents the machine from entering S5. It
3647 therefore suggested that host operating systems do not execute these
3649 by default. In the future, perhaps these methods can be optionally
3651 based on the age of the system and/or what is the newest version of
3653 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
3655 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
3658 Fixed a problem where the length of the local/common FADT was set too
3660 The local FADT table length cannot be set to the common length until the
3661 original length has been examined. There is code that checks the table
3663 and sets various fields appropriately. This can affect older machines
3665 early FADT versions. For example, this can cause inadvertent writes to
3667 CST_CNT register. Julian Anastasov.
3669 Fixed a mapping issue related to a physical table override. Use the
3671 mapping mechanism for tables loaded via the physical override OSL
3673 This allows for early mapping before the virtual memory manager is
3675 Thomas Renninger, Bob Moore.
3677 Enhanced the automatic return-object repair code: Repair a common problem
3679 predefined methods that are defined to return a variable-length Package
3681 sub-objects. If there is only one sub-object, some BIOS ASL code
3683 simply returns the single object instead of a Package with one sub-
3685 This new support will repair this error by wrapping a Package object
3687 the original object, creating the correct and expected Package with one
3689 object. Names that can be repaired in this manner include: _ALR, _CSD,
3691 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
3694 Changed the exception code returned for invalid ACPI paths passed as
3695 parameters to external interfaces such as AcpiEvaluateObject. Was
3696 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
3698 Example Code and Data Size: These are the sizes for the OS-independent
3699 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3701 version of the code includes the debug output trace mechanism and has a
3703 larger code and data size.
3706 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3707 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3709 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3710 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3713 2) iASL Compiler/Disassembler and Tools:
3715 iASL: Added the infrastructure and initial implementation of a integrated
3717 like preprocessor. This will simplify BIOS development process by
3719 the need for a separate preprocessing step during builds. On Windows, it
3721 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
3722 features including full #define() macro support are still under
3724 These preprocessor directives are supported:
3737 In addition, these new command line options are supported:
3738 -D <symbol> Define symbol for preprocessor use
3739 -li Create preprocessed output file (*.i)
3740 -P Preprocess only and create preprocessor output file (*.i)
3742 Table Compiler: Fixed a problem where the equals operator within an
3744 did not work properly.
3746 Updated iASL to use the current versions of Bison/Flex. Updated the
3748 project file to invoke these tools from the standard location. ACPICA BZ
3751 Flex for Windows: V2.5.4
3752 Bison for Windows: V2.4.1
3754 ----------------------------------------
3755 15 February 2012. Summary of changes for version 20120215:
3758 1) ACPICA Core Subsystem:
3760 There have been some major changes to the sleep/wake support code, as
3761 described below (a - e).
3763 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
3764 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
3765 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
3767 time the _BFS method is called and the _WAK method is called. NOTE: all
3769 must update their wake/resume code or else sleep/wake will not work
3773 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
3775 method. Some machines require that the GPEs are enabled before the _WAK
3777 is executed. Thomas Renninger.
3779 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
3781 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
3783 determine whether the system is rebooting or resuming. Matthew Garrett.
3785 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
3787 match the ACPI specification requirement. Rafael Wysocki.
3789 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
3790 registers within the V5 FADT. This support adds two new files:
3791 hardware/hwesleep.c implements the support for the new registers. Moved
3793 sleep/wake external interfaces to hardware/hwxfsleep.c.
3796 Added a new OSL interface for ACPI table overrides,
3797 AcpiOsPhysicalTableOverride. This interface allows the host to override a
3798 table via a physical address, instead of the logical address required by
3799 AcpiOsTableOverride. This simplifies the host implementation. Initial
3800 implementation by Thomas Renninger. The ACPICA implementation creates a
3802 shared function for table overrides that attempts both a logical and a
3805 Expanded the OSL memory read/write interfaces to 64-bit data
3806 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
3807 transfer support for GAS register structures passed to AcpiRead and
3810 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
3812 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
3814 See the ACPICA reference for details. ACPICA BZ 942. This option removes
3816 10% of the code and 5% of the static data, and the following hardware
3818 features become unavailable:
3819 PM Event and Control registers
3820 SCI interrupt (and handler)
3822 General Purpose Events (GPEs)
3825 FACS table (Waking vectors and Global Lock)
3827 Updated the unix tarball directory structure to match the ACPICA git
3829 tree. This ensures that the generic unix makefiles work properly (in
3830 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
3833 Updated the return value of the _REV predefined method to integer value 5
3835 reflect ACPI 5.0 support.
3837 Moved the external ACPI PM timer interface prototypes to the public
3839 file where they belong.
3841 Example Code and Data Size: These are the sizes for the OS-independent
3842 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3844 version of the code includes the debug output trace mechanism and has a
3846 larger code and data size.
3849 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3850 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3852 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3853 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3856 2) iASL Compiler/Disassembler and Tools:
3858 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
3859 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
3860 incorrectly displayed.
3862 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
3865 ----------------------------------------
3866 11 January 2012. Summary of changes for version 20120111:
3869 1) ACPICA Core Subsystem:
3871 Implemented a new mechanism to allow host device drivers to check for
3873 range conflicts with ACPI Operation Regions. Both SystemMemory and
3875 address spaces are supported. A new external interface,
3876 AcpiCheckAddressRange,
3877 allows drivers to check an address range against the ACPI namespace. See
3879 ACPICA reference for additional details. Adds one new file,
3880 utilities/utaddress.c. Lin Ming, Bob Moore.
3882 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
3885 Status registers, update the ACPI 5.0 flags, and update internal data
3886 structures to handle an FADT larger than 256 bytes. The size of the ACPI
3890 Updated all ACPICA copyrights and signons to 2012. Added the 2012
3892 all module headers and signons, including the standard Linux header. This
3893 affects virtually every file in the ACPICA core subsystem, iASL compiler,
3895 all ACPICA utilities.
3897 Example Code and Data Size: These are the sizes for the OS-independent
3898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3900 version of the code includes the debug output trace mechanism and has a
3902 larger code and data size.
3905 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3906 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3908 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3909 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3912 2) iASL Compiler/Disassembler and Tools:
3914 Disassembler: fixed a problem with the automatic resource tag generation
3915 support. Fixes a problem where the resource tags are inadvertently not
3916 constructed if the table being disassembled contains external references
3918 control methods. Moved the actual construction of the tags to after the
3920 namespace is constructed (after 2nd parse is invoked due to external
3922 method references.) ACPICA BZ 941.
3924 Table Compiler: Make all "generic" operators caseless. These are the
3926 like UINT8, String, etc. Making these caseless improves ease-of-use.
3930 ----------------------------------------
3931 23 November 2011. Summary of changes for version 20111123:
3933 0) ACPI 5.0 Support:
3935 This release contains full support for the ACPI 5.0 specification, as
3938 Reduced Hardware Support:
3939 -------------------------
3941 This support allows for ACPI systems without the usual ACPI hardware.
3943 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
3945 not attempt to initialize or use any of the usual ACPI hardware. Note,
3947 this flag is set, all of the following ACPI hardware is assumed to be not
3948 present and is not initialized or accessed:
3950 General Purpose Events (GPEs)
3951 Fixed Events (PM1a/PM1b and PM Control)
3952 Power Management Timer and Console Buttons (power/sleep)
3953 Real-time Clock Alarm
3955 System Control Interrupt (SCI)
3956 The FACS is assumed to be non-existent
3961 All new tables and updates to existing tables are fully supported in the
3962 ACPICA headers (for use by device drivers), the disassembler, and the
3964 Data Table Compiler. ACPI 5.0 defines these new tables:
3966 BGRT /* Boot Graphics Resource Table */
3967 DRTM /* Dynamic Root of Trust for Measurement table */
3968 FPDT /* Firmware Performance Data Table */
3969 GTDT /* Generic Timer Description Table */
3970 MPST /* Memory Power State Table */
3971 PCCT /* Platform Communications Channel Table */
3972 PMTT /* Platform Memory Topology Table */
3973 RASF /* RAS Feature table */
3975 Operation Regions/SpaceIDs:
3976 ---------------------------
3978 All new operation regions are fully supported by the iASL compiler, the
3979 disassembler, and the ACPICA runtime code (for dispatch to region
3981 The new operation region Space IDs are:
3986 Resource Descriptors:
3987 ---------------------
3989 All new ASL resource descriptors are fully supported by the iASL
3992 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
3994 all new predefined resource tags). New descriptors are:
4003 ASL/AML Operators, New and Modified:
4004 ------------------------------------
4006 One new operator is added, the Connection operator, which is used to
4008 a GeneralPurposeIo or GenericSerialBus resource descriptor with
4010 field objects within an operation region. Several new protocols are
4012 with the AccessAs operator. All are fully supported by the iASL compiler,
4013 disassembler, and runtime ACPICA AML interpreter:
4015 Connection // Declare Field Connection
4017 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
4018 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
4020 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
4021 RawDataBuffer // Data type for Vendor Data
4024 Predefined ASL/AML Objects:
4025 ---------------------------
4027 All new predefined objects/control-methods are supported by the iASL
4029 and the ACPICA runtime validation/repair (arguments and return values.)
4031 predefined names include the following:
4033 Standard Predefined Names (Objects or Control Methods):
4034 _AEI, _CLS, _CPC, _CWS, _DEP,
4035 _DLM, _EVT, _GCP, _CRT, _GWS,
4036 _HRV, _PRE, _PSE, _SRT, _SUB.
4038 Resource Tags (Names used to access individual fields within resource
4040 _DBT, _DPL, _DRS, _END, _FLC,
4041 _IOR, _LIN, _MOD, _PAR, _PHA,
4042 _PIN, _PPI, _POL, _RXL, _SLV,
4043 _SPE, _STB, _TXL, _VEN.
4045 ACPICA External Interfaces:
4046 ---------------------------
4048 Several new interfaces have been defined for use by ACPI-related device
4049 drivers and other host OS services:
4051 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
4053 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
4054 provided by the BIOS. They are intended to be used in conjunction with
4056 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
4057 mutual exclusion with the AML code/interpreter.
4059 AcpiGetEventResources: Returns the (formatted) resource descriptors as
4061 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
4063 resource descriptors associated with hardware-reduced platform events,
4065 to the AcpiGetCurrentResources interface.
4067 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
4068 operation regions, information about the Connection() object and any
4070 length information is passed to the region handler within the Context
4073 AcpiBufferToResource: This interface converts a raw AML buffer containing
4075 resource template or resource descriptor to the ACPI_RESOURCE internal
4077 suitable for use by device drivers. Can be used by an operation region
4079 to convert the Connection() buffer object into a ACPI_RESOURCE.
4081 Miscellaneous/Tools/TestSuites:
4082 -------------------------------
4084 Support for extended _HID names (Four alpha characters instead of three).
4085 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
4086 Support for ACPI 5.0 features in the ASLTS test suite.
4087 Fully updated documentation (ACPICA and iASL reference documents.)
4089 ACPI Table Definition Language:
4090 -------------------------------
4092 Support for this language was implemented and released as a subsystem of
4094 iASL compiler in 2010. (See the iASL compiler User Guide.)
4097 Non-ACPI 5.0 changes for this release:
4098 --------------------------------------
4100 1) ACPICA Core Subsystem:
4102 Fix a problem with operation region declarations where a failure can
4105 the region name and an argument that evaluates to an object (such as the
4106 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
4109 Do not abort an ACPI table load if an invalid space ID is found within.
4111 will be caught later if the offending method is executed. ACPICA BZ 925.
4113 Fixed an issue with the FFixedHW space ID where the ID was not always
4114 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
4116 Fixed a problem with the 32-bit generation of the unix-specific OSL
4117 (osunixxf.c). Lin Ming, ACPICA BZ 936.
4119 Several changes made to enable generation with the GCC 4.6 compiler.
4123 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
4125 field registers out-of-range.
4127 2) iASL Compiler/Disassembler and Tools:
4129 iASL: Implemented the __PATH__ operator, which returns the full pathname
4131 the current source file.
4133 AcpiHelp: Automatically display expanded keyword information for all ASL
4136 Debugger: Add "Template" command to disassemble/dump resource template
4139 Added a new master script to generate and execute the ASLTS test suite.
4140 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
4142 iASL: Fix problem with listing generation during processing of the
4144 operator where AML listing was disabled until the entire Switch block was
4147 iASL: Improve support for semicolon statement terminators. Fix "invalid
4148 character" message for some cases when the semicolon is used. Semicolons
4150 now allowed after every <Term> grammar element. ACPICA BZ 927.
4152 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
4155 Disassembler: Fix problem with disassembly of the DataTableRegion
4157 where an inadvertent "Unhandled deferred opcode" message could be
4160 3) Example Code and Data Size
4162 These are the sizes for the OS-independent acpica.lib produced by the
4163 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4164 includes the debug output trace mechanism and has a much larger code and
4169 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4170 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4172 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4173 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4175 ----------------------------------------
4176 22 September 2011. Summary of changes for version 20110922:
4180 Support for ACPI 5.0 in ACPICA has been underway for several months and
4182 be released at the same time that ACPI 5.0 is officially released.
4184 The ACPI 5.0 specification is on track for release in the next few
4187 1) ACPICA Core Subsystem:
4189 Fixed a problem where the maximum sleep time for the Sleep() operator was
4190 intended to be limited to two seconds, but was inadvertently limited to
4194 Linux and Unix makefiles: Added header file dependencies to ensure
4196 generation of ACPICA core code and utilities. Also simplified the
4198 considerably through the use of the vpath variable to specify search
4202 2) iASL Compiler/Disassembler and Tools:
4204 iASL: Implemented support to check the access length for all fields
4206 access named Resource Descriptor fields. For example, if a resource field
4208 defined to be two bits, a warning is issued if a CreateXxxxField() is
4210 with an incorrect bit length. This is implemented for all current
4212 descriptor names. ACPICA BZ 930.
4214 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
4218 iASL: Fixed a couple of issues associated with variable-length package
4219 objects. 1) properly handle constants like One, Ones, Zero -- do not make
4221 VAR_PACKAGE when these are used as a package length. 2) Allow the
4223 opcode (in addition to PACKAGE) when validating object types for
4227 iASL: Emit statistics for all output files (instead of just the ASL input
4229 AML output). Includes listings, hex files, etc.
4231 iASL: Added -G option to the table compiler to allow the compilation of
4233 ACPI tables. The only part of a table that is required is the standard
4238 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
4240 which also adds correct 64-bit support. Also, now all output filenames
4242 completely lower case.
4244 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
4245 loading table files. A warning is issued for any such tables. The only
4246 exception is an FADT. This also fixes a possible fault when attempting to
4248 non-AML tables. ACPICA BZ 932.
4250 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
4252 missing table terminator could cause a fault when using the -p option.
4254 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
4257 3) Example Code and Data Size
4259 These are the sizes for the OS-independent acpica.lib produced by the
4260 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
4261 includes the debug output trace mechanism and has a much larger code and
4265 Previous Release (VC 9.0):
4266 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4267 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4268 Current Release (VC 9.0):
4269 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4270 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4273 ----------------------------------------
4274 23 June 2011. Summary of changes for version 20110623:
4276 1) ACPI CA Core Subsystem:
4278 Updated the predefined name repair mechanism to not attempt repair of a
4280 return object if a _PSS object is present. We can only sort the _TSS
4282 package if there is no _PSS within the same scope. This is because if
4285 present, the ACPI specification dictates that the _TSS Power Dissipation
4287 is to be ignored, and therefore some BIOSs leave garbage values in the
4289 Power field(s). In this case, it is best to just return the _TSS package
4291 is. Reported by, and fixed with assistance from Fenghua Yu.
4293 Added an option to globally disable the control method return value
4295 and repair. This runtime option can be used to disable return value
4298 this is causing a problem on a particular machine. Also added an option
4300 AcpiExec (-dr) to set this disable flag.
4302 All makefiles and project files: Major changes to improve generation of
4304 tools. ACPICA BZ 912:
4305 Reduce default optimization levels to improve compatibility
4306 For Linux, add strict-aliasing=0 for gcc 4
4307 Cleanup and simplify use of command line defines
4308 Cleanup multithread library support
4309 Improve usage messages
4311 Linux-specific header: update handling of THREAD_ID and pthread. For the
4313 bit case, improve casting to eliminate possible warnings, especially with
4317 Example Code and Data Size: These are the sizes for the OS-independent
4318 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4320 version of the code includes the debug output trace mechanism and has a
4322 larger code and data size.
4324 Previous Release (VC 9.0):
4325 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4326 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4327 Current Release (VC 9.0):
4328 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
4329 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4331 2) iASL Compiler/Disassembler and Tools:
4333 With this release, a new utility named "acpihelp" has been added to the
4335 package. This utility summarizes the ACPI specification chapters for the
4337 and AML languages. It generates under Linux/Unix as well as Windows, and
4338 provides the following functionality:
4339 Find/display ASL operator(s) -- with description and syntax.
4340 Find/display ASL keyword(s) -- with exact spelling and descriptions.
4341 Find/display ACPI predefined name(s) -- with description, number
4342 of arguments, and the return value data type.
4343 Find/display AML opcode name(s) -- with opcode, arguments, and
4345 Decode/display AML opcode -- with opcode name, arguments, and
4348 Service Layers: Make multi-thread support configurable. Conditionally
4350 the multi-thread support so that threading libraries will not be linked
4353 necessary. The only tool that requires multi-thread support is AcpiExec.
4355 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
4357 Bison appear to want the interface to yyerror to be a const char * (or at
4358 least this is a problem when generating iASL on some systems.) ACPICA BZ
4362 Tools: Fix for systems where O_BINARY is not defined. Only used for
4364 versions of the tools.
4366 ----------------------------------------
4367 27 May 2011. Summary of changes for version 20110527:
4369 1) ACPI CA Core Subsystem:
4371 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
4373 signature. Now, only allow SSDT, OEMx, and a null signature. History:
4374 1) Originally, we checked the table signature for "SSDT" or "PSDT".
4375 (PSDT is now obsolete.)
4376 2) We added support for OEMx tables, signature "OEM" plus a fourth
4377 "don't care" character.
4378 3) Valid tables were encountered with a null signature, so we just
4379 gave up on validating the signature, (05/2008).
4380 4) We encountered non-AML tables such as the MADT, which caused
4381 interpreter errors and kernel faults. So now, we once again allow
4382 only SSDT, OEMx, and now, also a null signature. (05/2011).
4384 Added the missing _TDL predefined name to the global name list in order
4386 enable validation. Affects both the core ACPICA code and the iASL
4389 Example Code and Data Size: These are the sizes for the OS-independent
4390 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4392 version of the code includes the debug output trace mechanism and has a
4394 larger code and data size.
4396 Previous Release (VC 9.0):
4397 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4398 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4399 Current Release (VC 9.0):
4400 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
4401 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
4403 2) iASL Compiler/Disassembler and Tools:
4405 Debugger/AcpiExec: Implemented support for "complex" method arguments on
4407 debugger command line. This adds support beyond simple integers --
4409 Strings, Buffers, and Packages. Includes support for nested packages.
4410 Increased the default command line buffer size to accommodate these
4412 See the ACPICA reference for details and syntax. ACPICA BZ 917.
4414 Debugger/AcpiExec: Implemented support for "default" method arguments for
4416 Execute/Debug command. Now, the debugger will always invoke a control
4418 with the required number of arguments -- even if the command line
4420 none or insufficient arguments. It uses default integer values for any
4422 arguments. Also fixes a bug where only six method arguments maximum were
4423 supported instead of the required seven.
4425 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
4427 also return status in order to prevent buffer overruns. See the ACPICA
4428 reference for details and syntax. ACPICA BZ 921
4430 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
4431 makefiles to simplify support for the two different but similar parser
4432 generators, bison and yacc.
4434 Updated the generic unix makefile for gcc 4. The default gcc version is
4436 expected to be 4 or greater, since options specific to gcc 4 are used.
4438 ----------------------------------------
4439 13 April 2011. Summary of changes for version 20110413:
4441 1) ACPI CA Core Subsystem:
4443 Implemented support to execute a so-called "orphan" _REG method under the
4445 device. This change will force the execution of a _REG method underneath
4448 device even if there is no corresponding operation region of type
4449 EmbeddedControl. Fixes a problem seen on some machines and apparently is
4450 compatible with Windows behavior. ACPICA BZ 875.
4452 Added more predefined methods that are eligible for automatic NULL
4454 element removal. This change adds another group of predefined names to
4457 of names that can be repaired by having NULL package elements dynamically
4458 removed. This group are those methods that return a single variable-
4460 package containing simple data types such as integers, buffers, strings.
4462 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
4465 and _TZD. ACPICA BZ 914.
4467 Split and segregated all internal global lock functions to a new file,
4470 Updated internal address SpaceID for DataTable regions. Moved this
4473 id in preparation for ACPI 5.0 changes that will include some new space
4476 change should not affect user/host code.
4478 Example Code and Data Size: These are the sizes for the OS-independent
4480 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4482 the code includes the debug output trace mechanism and has a much larger
4487 Previous Release (VC 9.0):
4488 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4489 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4490 Current Release (VC 9.0):
4491 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
4492 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
4494 2) iASL Compiler/Disassembler and Tools:
4496 iASL/DTC: Major update for new grammar features. Allow generic data types
4498 custom ACPI tables. Field names are now optional. Any line can be split
4500 multiple lines using the continuation char (\). Large buffers now use
4502 continuation character(s) and no colon on the continuation lines. See the
4504 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
4507 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
4509 Since the parser stuffs a "zero" as the return value for these statements
4512 the underlying AML grammar), they were seen as "return with value" by the
4514 semantic checking. They are now seen correctly as "null" return
4517 iASL: Check if a_REG declaration has a corresponding Operation Region.
4519 check for each _REG to ensure that there is in fact a corresponding
4521 region declaration in the same scope. If not, the _REG method is not very
4523 since it probably won't be executed. ACPICA BZ 915.
4525 iASL/DTC: Finish support for expression evaluation. Added a new
4528 that implements c-style operator precedence and parenthesization. ACPICA
4532 Disassembler/DTC: Remove support for () and <> style comments in data
4535 that DTC has full expression support, we don't want to have comment
4538 start with a parentheses or a less-than symbol. Now, only the standard /*
4541 comments are supported, as well as the bracket [] comments.
4543 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
4545 headers in the acpidump file. Update the header validation to support
4547 tables. Problem introduced in previous AcpiXtract version in the change
4549 support "wrong checksum" error messages emitted by acpidump utility.
4551 iASL: Add a * option to generate all template files (as a synonym for
4555 "iasl -T *" or "iasl -T ALL".
4557 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
4559 abort the compiler on "fatal" errors, simply should abort the current
4561 This allows multiple compiles with a single (possibly wildcard) compiler
4564 ----------------------------------------
4565 16 March 2011. Summary of changes for version 20110316:
4567 1) ACPI CA Core Subsystem:
4569 Fixed a problem caused by a _PRW method appearing at the namespace root
4571 during the setup of wake GPEs. A fault could occur if a _PRW directly
4574 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
4576 Implemented support for "spurious" Global Lock interrupts. On some
4578 global lock interrupt can occur without the pending flag being set. Upon
4581 interrupt, we now ensure that a thread is actually waiting for the lock
4583 signaling GL availability. Rafael Wysocki, Bob Moore.
4585 Example Code and Data Size: These are the sizes for the OS-independent
4587 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
4589 the code includes the debug output trace mechanism and has a much larger
4594 Previous Release (VC 9.0):
4595 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4596 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4597 Current Release (VC 9.0):
4598 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
4599 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
4601 2) iASL Compiler/Disassembler and Tools:
4603 Implemented full support for the "SLIC" ACPI table. Includes support in
4605 header files, disassembler, table compiler, and template generator. Bob
4609 AcpiXtract: Correctly handle embedded comments and messages from
4611 Apparently some or all versions of acpidump will occasionally emit a
4614 "Wrong checksum", etc., into the dump file. This was causing problems for
4615 AcpiXtract. ACPICA BZ 905.
4617 iASL: Fix the Linux makefile by removing an inadvertent double file
4621 AcpiExec: Update installation of operation region handlers. Install one
4623 for a user-defined address space. This is used by the ASL test suite
4626 ----------------------------------------
4627 11 February 2011. Summary of changes for version 20110211:
4629 1) ACPI CA Core Subsystem:
4631 Added a mechanism to defer _REG methods for some early-installed
4633 Most user handlers should be installed before call to
4634 AcpiEnableSubsystem.
4635 However, Event handlers and region handlers should be installed after
4636 AcpiInitializeObjects. Override handlers for the "default" regions should
4638 installed early, however. This change executes all _REG methods for the
4639 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
4640 chicken/egg issues between them. ACPICA BZ 848.
4642 Implemented an optimization for GPE detection. This optimization will
4644 ignore GPE registers that contain no enabled GPEs -- there is no need to
4645 read the register since this information is available internally. This
4646 becomes more important on machines with a large GPE space. ACPICA
4648 884. Lin Ming. Suggestion from Joe Liu.
4650 Removed all use of the highly unreliable FADT revision field. The
4652 number in the FADT has been found to be completely unreliable and cannot
4654 trusted. Only the actual table length can be used to infer the version.
4656 change updates the ACPICA core and the disassembler so that both no
4658 even look at the FADT version and instead depend solely upon the FADT
4661 Fix an unresolved name issue for the no-debug and no-error-message source
4662 generation cases. The _AcpiModuleName was left undefined in these cases,
4664 it is actually needed as a parameter to some interfaces. Define
4665 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
4667 Split several large files (makefiles and project files updated)
4668 utglobal.c -> utdecode.c
4669 dbcomds.c -> dbmethod.c dbnames.c
4670 dsopcode.c -> dsargs.c dscontrol.c
4671 dsload.c -> dsload2.c
4672 aslanalyze.c -> aslbtypes.c aslwalks.c
4674 Example Code and Data Size: These are the sizes for the OS-independent
4675 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4676 debug version of the code includes the debug output trace mechanism and
4678 a much larger code and data size.
4680 Previous Release (VC 9.0):
4681 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4682 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4683 Current Release (VC 9.0):
4684 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4685 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4687 2) iASL Compiler/Disassembler and Tools:
4689 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
4690 These are useful C-style macros with the standard definitions. ACPICA
4693 iASL/DTC: Added support for integer expressions and labels. Support for
4695 expressions for all integer fields in all ACPI tables. Support for labels
4697 "generic" portions of tables such as UEFI. See the iASL reference manual.
4699 Debugger: Added a command to display the status of global handlers. The
4700 "handlers" command will display op region, fixed event, and miscellaneous
4701 global handlers. installation status -- and for op regions, whether
4703 or user-installed handler will be used.
4705 iASL: Warn if reserved method incorrectly returns a value. Many
4707 names are defined such that they do not return a value. If implemented as
4709 method, issue a warning if such a name explicitly returns a value. ACPICA
4712 iASL: Added detection of GPE method name conflicts. Detects a conflict
4714 there are two GPE methods of the form _Lxy and _Exy in the same scope.
4716 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
4718 iASL/DTC: Fixed a couple input scanner issues with comments and line
4719 numbers. Comment remover could get confused and miss a comment ending.
4721 a problem with line counter maintenance.
4723 iASL/DTC: Reduced the severity of some errors from fatal to error. There
4725 no need to abort on simple errors within a field definition.
4727 Debugger: Simplified the output of the help command. All help output now
4729 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
4731 ----------------------------------------
4732 12 January 2011. Summary of changes for version 20110112:
4734 1) ACPI CA Core Subsystem:
4736 Fixed a race condition between method execution and namespace walks that
4738 possibly cause a fault. The problem was apparently introduced in version
4739 20100528 as a result of a performance optimization that reduces the
4742 namespace walks upon method exit by using the delete_namespace_subtree
4743 function instead of the delete_namespace_by_owner function used
4745 Bug is a missing namespace lock in the delete_namespace_subtree function.
4746 dana.myers@oracle.com
4748 Fixed several issues and a possible fault with the automatic "serialized"
4749 method support. History: This support changes a method to "serialized" on
4751 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
4752 possibility that it cannot handle reentrancy. This fix repairs a couple
4754 issues seen in the field, especially on machines with many cores:
4756 1) Delete method children only upon the exit of the last thread,
4757 so as to not delete objects out from under other running threads
4758 (and possibly causing a fault.)
4759 2) Set the "serialized" bit for the method only upon the exit of the
4760 Last thread, so as to not cause deadlock when running threads
4762 3) Cleanup the use of the AML "MethodFlags" and internal method flags
4763 so that there is no longer any confusion between the two.
4765 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
4767 Debugger: Now lock the namespace for duration of a namespace dump.
4769 issues if the namespace is changing dynamically underneath the debugger.
4770 Especially affects temporary namespace nodes, since the debugger displays
4773 Updated the ordering of include files. The ACPICA headers should appear
4774 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
4776 any necessary compiler-specific defines, etc. Affects the ACPI-related
4780 Updated all ACPICA copyrights and signons to 2011. Added the 2011
4782 to all module headers and signons, including the Linux header. This
4784 virtually every file in the ACPICA core subsystem, iASL compiler, and all
4787 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
4788 project files for VC++ 6.0 are now obsolete. New project files can be
4790 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
4793 Example Code and Data Size: These are the sizes for the OS-independent
4794 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4795 debug version of the code includes the debug output trace mechanism and
4797 much larger code and data size.
4799 Previous Release (VC 6.0):
4800 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4801 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4802 Current Release (VC 9.0):
4803 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4804 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4806 2) iASL Compiler/Disassembler and Tools:
4808 iASL: Added generic data types to the Data Table compiler. Add "generic"
4810 types such as UINT32, String, Unicode, etc., to simplify the generation
4812 platform-defined tables such as UEFI. Lin Ming.
4814 iASL: Added listing support for the Data Table Compiler. Adds listing
4816 (-l) to display actual binary output for each line of input code.
4818 ----------------------------------------
4819 09 December 2010. Summary of changes for version 20101209:
4821 1) ACPI CA Core Subsystem:
4823 Completed the major overhaul of the GPE support code that was begun in
4825 2010. Major features include: removal of _PRW execution in ACPICA (host
4826 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
4827 changes to existing interfaces, simplification of GPE handler operation,
4829 a handful of new interfaces:
4835 One new file, evxfgpe.c to consolidate all external GPE interfaces.
4837 See the ACPICA Programmer Reference for full details and programming
4838 information. See the new section 4.4 "General Purpose Event (GPE)
4840 for a full overview, and section 8.7 "ACPI General Purpose Event
4842 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
4844 Bob Moore, Rafael Wysocki.
4846 Implemented a new GPE feature for Windows compatibility, the "Implicit
4848 GPE Notify". This feature will automatically issue a Notify(2) on a
4850 when a Wake GPE is received if there is no corresponding GPE method or
4851 handler. ACPICA BZ 870.
4853 Fixed a problem with the Scope() operator during table parse and load
4855 During load phase (table load or method execution), the scope operator
4857 not enter the target into the namespace. Instead, it should open a new
4859 at the target location. Linux BZ 19462, ACPICA BZ 882.
4861 Example Code and Data Size: These are the sizes for the OS-independent
4862 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4863 debug version of the code includes the debug output trace mechanism and
4865 much larger code and data size.
4868 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4869 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4871 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4872 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4874 2) iASL Compiler/Disassembler and Tools:
4876 iASL: Relax the alphanumeric restriction on _CID strings. These strings
4878 "bus-specific" per the ACPI specification, and therefore any characters
4880 acceptable. The only checks that can be performed are for a null string
4882 perhaps for a leading asterisk. ACPICA BZ 886.
4884 iASL: Fixed a problem where a syntax error that caused a premature EOF
4885 condition on the source file emitted a very confusing error message. The
4886 premature EOF is now detected correctly. ACPICA BZ 891.
4888 Disassembler: Decode the AccessSize within a Generic Address Structure
4890 access, word access, etc.) Note, this field does not allow arbitrary bit
4891 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
4893 New: AcpiNames utility - Example namespace dump utility. Shows an example
4895 ACPICA configuration for a minimal namespace dump utility. Uses table and
4896 namespace managers, but no AML interpreter. Does not add any
4898 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
4899 partition and configure ACPICA. ACPICA BZ 883.
4901 AML Debugger: Increased the debugger buffer size for method return
4903 Was 4K, increased to 16K. Also enhanced error messages for debugger
4905 execution, including the buffer overflow case.
4907 ----------------------------------------
4908 13 October 2010. Summary of changes for version 20101013:
4910 1) ACPI CA Core Subsystem:
4912 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
4914 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
4915 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
4917 Changed the type of the predefined namespace object _TZ from ThermalZone
4919 Device. This was found to be confusing to the host software that
4921 the various thermal zones, since _TZ is not really a ThermalZone.
4924 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
4927 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
4928 string is "Windows 2006 SP2".
4930 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
4932 code automatically repairs _HID-related strings, this type of code is no
4933 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
4936 Example Code and Data Size: These are the sizes for the OS-independent
4937 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4938 debug version of the code includes the debug output trace mechanism and
4940 much larger code and data size.
4943 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4944 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4946 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4947 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4949 2) iASL Compiler/Disassembler and Tools:
4951 iASL: Implemented additional compile-time validation for _HID strings.
4953 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
4956 the string must be exactly seven or eight characters. For both _HID and
4958 strings, all characters must be alphanumeric. ACPICA BZ 874.
4960 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
4961 descriptors that are mostly or all zeros, with the expectation that they
4963 be filled in at runtime. iASL now allows this as long as there is a
4965 tag" (name) associated with the descriptor, which gives the ASL a handle
4966 needed to modify the descriptor. ACPICA BZ 873.
4968 Added single-thread support to the generic Unix application OSL.
4970 for iASL support, this change removes the use of semaphores in the
4972 threaded ACPICA tools/applications - increasing performance. The
4973 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
4974 option. ACPICA BZ 879.
4976 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
4978 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
4980 iASL: Moved all compiler messages to a new file, aslmessages.h.
4982 ----------------------------------------
4983 15 September 2010. Summary of changes for version 20100915:
4985 1) ACPI CA Core Subsystem:
4987 Removed the AcpiOsDerivePciId OSL interface. The various host
4989 of this function were not OS-dependent and are now obsolete and can be
4990 removed from all host OSLs. This function has been replaced by
4991 AcpiHwDerivePciId, which is now part of the ACPICA core code.
4992 AcpiHwDerivePciId has been implemented without recursion. Adds one new
4993 module, hwpci.c. ACPICA BZ 857.
4995 Implemented a dynamic repair for _HID and _CID strings. The following
4996 problems are now repaired at runtime: 1) Remove a leading asterisk in the
4997 string, and 2) the entire string is uppercased. Both repairs are in
4998 accordance with the ACPI specification and will simplify host driver
5002 The ACPI_THREAD_ID type is no longer configurable, internally it is now
5003 always UINT64. This simplifies the ACPICA code, especially any printf
5005 UINT64 is the only common data type for all thread_id types across all
5006 operating systems. It is now up to the host OSL to cast the native
5008 type to UINT64 before returning the value to ACPICA (via
5010 Lin Ming, Bob Moore.
5012 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
5014 keyword is not standard across compilers, and this type allows inline to
5016 configured on a per-compiler basis. Lin Ming.
5018 Made the system global AcpiGbl_SystemAwakeAndRunning publically
5020 Added an extern for this boolean in acpixf.h. Some hosts utilize this
5022 during suspend/restore operations. ACPICA BZ 869.
5024 All code that implements error/warning messages with the "ACPI:" prefix
5026 been moved to a new module, utxferror.c.
5028 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
5030 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
5032 Example Code and Data Size: These are the sizes for the OS-independent
5033 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5034 debug version of the code includes the debug output trace mechanism and
5036 much larger code and data size.
5039 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5040 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5042 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5043 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5045 2) iASL Compiler/Disassembler and Tools:
5047 iASL/Disassembler: Write ACPI errors to stderr instead of the output
5049 This keeps the output files free of random error messages that may
5051 from within the namespace/interpreter code. Used this opportunity to
5053 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
5054 866. Lin Ming, Bob Moore.
5056 Tools: update some printfs for ansi warnings on size_t. Handle width
5058 of size_t on 32-bit versus 64-bit generations. Lin Ming.
5060 ----------------------------------------
5061 06 August 2010. Summary of changes for version 20100806:
5063 1) ACPI CA Core Subsystem:
5065 Designed and implemented a new host interface to the _OSI support code.
5067 will allow the host to dynamically add or remove multiple _OSI strings,
5069 well as install an optional handler that is called for each _OSI
5071 Also added a new AML debugger command, 'osi' to display and modify the
5073 _OSI string table, and test support in the AcpiExec utility. See the
5075 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
5077 AcpiInstallInterface - Add an _OSI string.
5078 AcpiRemoveInterface - Delete an _OSI string.
5079 AcpiInstallInterfaceHandler - Install optional _OSI handler.
5081 AcpiOsValidateInterface - no longer used.
5083 source/components/utilities/utosi.c
5085 Re-introduced the support to enable multi-byte transfers for Embedded
5086 Controller (EC) operation regions. A reported problem was found to be a
5088 in the host OS, not in the multi-byte support. Previously, the maximum
5090 size passed to the EC operation region handler was a single byte. There
5092 often EC Fields larger than one byte that need to be transferred, and it
5094 useful for the EC driver to lock these as a single transaction. This
5096 enables single transfers larger than 8 bits. This effectively changes the
5097 access to the EC space from ByteAcc to AnyAcc, and will probably require
5098 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
5100 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
5102 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
5103 prototype in acpiosxf.h had the output value pointer as a (void *).
5104 It should be a (UINT64 *). This may affect some host OSL code.
5106 Fixed a couple problems with the recently modified Linux makefiles for
5108 and AcpiExec. These new makefiles place the generated object files in the
5109 local directory so that there can be no collisions between the files that
5111 shared between them that are compiled with different options.
5113 Example Code and Data Size: These are the sizes for the OS-independent
5114 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5115 debug version of the code includes the debug output trace mechanism and
5117 much larger code and data size.
5120 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5121 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5123 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
5124 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
5126 2) iASL Compiler/Disassembler and Tools:
5128 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
5130 namespace from and disassemble an entire group of AML files. Useful for
5131 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
5133 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
5135 iASL: Allow multiple invocations of -e option. This change allows
5137 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
5141 ----------------------------------------
5142 02 July 2010. Summary of changes for version 20100702:
5144 1) ACPI CA Core Subsystem:
5146 Implemented several updates to the recently added GPE reference count
5147 support. The model for "wake" GPEs is changing to give the host OS
5149 control of these GPEs. Eventually, the ACPICA core will not execute any
5151 methods, since the host already must execute them. Also, additional
5153 were made to help ensure that the reference counts are kept in proper
5154 synchronization with reality. Rafael J. Wysocki.
5156 1) Ensure that GPEs are not enabled twice during initialization.
5157 2) Ensure that GPE enable masks stay in sync with the reference count.
5158 3) Do not inadvertently enable GPEs when writing GPE registers.
5159 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
5160 interface. This interface will set or clear individual GPEs for wakeup.
5161 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
5163 are now used for "runtime" GPEs only.
5165 Changed the behavior of the GPE install/remove handler interfaces. The
5168 no longer disabled during this process, as it was found to cause problems
5170 some machines. Rafael J. Wysocki.
5172 Reverted a change introduced in version 20100528 to enable Embedded
5173 Controller multi-byte transfers. This change was found to cause problems
5175 Index Fields and possibly Bank Fields. It will be reintroduced when these
5176 problems have been resolved.
5178 Fixed a problem with references to Alias objects within Package Objects.
5180 reference to an Alias within the definition of a Package was not always
5181 resolved properly. Aliases to objects like Processors, Thermal zones,
5183 were resolved to the actual object instead of a reference to the object
5186 should be. Package objects are only allowed to contain integer, string,
5187 buffer, package, and reference objects. Redhat bugzilla 608648.
5189 Example Code and Data Size: These are the sizes for the OS-independent
5190 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5191 debug version of the code includes the debug output trace mechanism and
5193 much larger code and data size.
5196 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5197 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5199 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5200 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
5202 2) iASL Compiler/Disassembler and Tools:
5204 iASL: Implemented a new compiler subsystem to allow definition and
5205 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
5207 are called "ACPI Data Tables", and the new compiler is the "Data Table
5208 Compiler". This compiler is intended to simplify the existing error-prone
5209 process of creating these tables for the BIOS, as well as allowing the
5210 disassembly, modification, recompilation, and override of existing ACPI
5212 tables. See the iASL User Guide for detailed information.
5214 iASL: Implemented a new Template Generator option in support of the new
5216 Table Compiler. This option will create examples of all known ACPI tables
5217 that can be used as the basis for table development. See the iASL
5218 documentation and the -T option.
5220 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
5223 Updated the Linux makefiles for iASL and AcpiExec to place the generated
5224 object files in the local directory so that there can be no collisions
5225 between the shared files between them that are generated with different
5228 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
5230 the #define __APPLE__ to enable this support.
5232 ----------------------------------------
5233 28 May 2010. Summary of changes for version 20100528:
5235 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
5236 available at www.acpi.info. This is primarily an errata release.
5238 1) ACPI CA Core Subsystem:
5240 Undefined ACPI tables: We are looking for the definitions for the
5242 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
5244 Implemented support to enable multi-byte transfers for Embedded
5246 (EC) operation regions. Previously, the maximum data size passed to the
5248 operation region handler was a single byte. There are often EC Fields
5250 than one byte that need to be transferred, and it is useful for the EC
5252 to lock these as a single transaction. This change enables single
5254 larger than 8 bits. This effectively changes the access to the EC space
5256 ByteAcc to AnyAcc, and will probably require changes to the host OS
5258 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
5260 transfers. Alexey Starikovskiy, Lin Ming
5262 Implemented a performance enhancement for namespace search and access.
5264 change enhances the performance of namespace searches and walks by adding
5266 backpointer to the parent in each namespace node. On large namespaces,
5268 change can improve overall ACPI performance by up to 9X. Adding a pointer
5270 each namespace node increases the overall size of the internal namespace
5272 about 5%, since each namespace entry usually consists of both a namespace
5273 node and an ACPI operand object. However, this is the first growth of the
5274 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
5276 Implemented a performance optimization that reduces the number of
5278 walks. On control method exit, only walk the namespace if the method is
5280 to have created namespace objects outside of its local scope. Previously,
5282 entire namespace was traversed on each control method exit. This change
5284 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
5287 Added support to truncate I/O addresses to 16 bits for Windows
5289 Some ASL code has been seen in the field that inadvertently has bits set
5290 above bit 15. This feature is optional and is enabled if the BIOS
5292 any Windows OSI strings. It can also be enabled by the host OS. Matthew
5295 Added support to limit the maximum time for the ASL Sleep() operator. To
5296 prevent accidental deep sleeps, limit the maximum time that Sleep() will
5297 actually sleep. Configurable, the default maximum is two seconds. ACPICA
5300 Added run-time validation support for the _WDG and_WED Microsoft
5302 methods. These objects are defined by "Windows Instrumentation", and are
5304 part of the ACPI spec. ACPICA BZ 860.
5306 Expanded all statistic counters used during namespace and device
5307 initialization from 16 to 32 bits in order to support very large
5310 Replaced all instances of %d in printf format specifiers with %u since
5312 all integers in ACPICA are unsigned.
5314 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
5318 Example Code and Data Size: These are the sizes for the OS-independent
5319 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5320 debug version of the code includes the debug output trace mechanism and
5322 much larger code and data size.
5325 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5326 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5328 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
5329 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
5331 2) iASL Compiler/Disassembler and Tools:
5333 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
5334 methods. These objects are defined by "Windows Instrumentation", and are
5336 part of the ACPI spec. ACPICA BZ 860.
5338 AcpiExec: added option to disable the memory tracking mechanism. The -dt
5339 option will disable the tracking mechanism, which improves performance
5342 AcpiExec: Restructured the command line options into -d (disable) and -e
5345 ----------------------------------------
5346 28 April 2010. Summary of changes for version 20100428:
5348 1) ACPI CA Core Subsystem:
5350 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
5351 including FADT-based and GPE Block Devices, execute any _PRW methods in
5353 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
5354 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
5355 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
5356 Devices. Provides compatibility with other ACPI implementations. Two new
5357 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
5360 Fixed a regression introduced in version 20100331 within the table
5362 where initial table loading could fail. This was introduced in the fix
5364 AcpiReallocateRootTable. Also, renamed some of fields in the table
5366 data structures to clarify their meaning and use.
5368 Fixed a possible allocation overrun during internal object copy in
5369 AcpiUtCopySimpleObject. The original code did not correctly handle the
5371 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
5374 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
5375 possible access beyond end-of-allocation. Also, now fully validate
5377 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
5379 Example Code and Data Size: These are the sizes for the OS-independent
5380 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5381 debug version of the code includes the debug output trace mechanism and
5383 much larger code and data size.
5386 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5387 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5389 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
5390 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
5392 2) iASL Compiler/Disassembler and Tools:
5394 iASL: Implemented Min/Max/Len/Gran validation for address resource
5395 descriptors. This change implements validation for the address fields
5397 are common to all address-type resource descriptors. These checks are
5398 implemented: Checks for valid Min/Max, length within the Min/Max window,
5399 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
5401 table 6-40 in the ACPI 4.0a specification. Also split the large
5403 and aslrestype2.c files into five new files. ACPICA BZ 840.
5405 iASL: Added support for the _Wxx predefined names. This support was
5407 and these names were not recognized by the compiler as valid predefined
5408 names. ACPICA BZ 851.
5410 iASL: Added an error for all predefined names that are defined to return
5412 value and thus must be implemented as Control Methods. These include all
5414 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
5415 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
5417 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
5419 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
5421 dynamically loaded via the Load() operator. Also cleaned up output for
5424 ta and -tc options. ACPICA BZ 853.
5426 Tests: Added a new file with examples of extended iASL error checking.
5427 Demonstrates the advanced error checking ability of the iASL compiler.
5428 Available at tests/misc/badcode.asl.
5430 ----------------------------------------
5431 31 March 2010. Summary of changes for version 20100331:
5433 1) ACPI CA Core Subsystem:
5435 Completed a major update for the GPE support in order to improve support
5437 shared GPEs and to simplify both host OS and ACPICA code. Added a
5439 count mechanism to support shared GPEs that require multiple device
5441 Several external interfaces have changed. One external interface has been
5442 removed. One new external interface was added. Most of the GPE external
5443 interfaces now use the GPE spinlock instead of the events mutex (and the
5444 Flags parameter for many GPE interfaces has been removed.) See the
5446 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
5448 Wysocki. ACPICA BZ 831.
5451 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
5457 Implemented write support for DataTable operation regions. These regions
5459 defined via the DataTableRegion() operator. Previously, only read support
5461 implemented. The ACPI specification allows DataTableRegions to be
5465 Implemented a new subsystem option to force a copy of the DSDT to local
5466 memory. Optionally copy the entire DSDT to local memory (instead of
5468 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
5470 the original DSDT, creating the need for this option. Default is FALSE,
5474 Implemented detection of a corrupted or replaced DSDT. This change adds
5475 support to detect a DSDT that has been corrupted and/or replaced from
5477 the OS (by firmware). This is typically catastrophic for the system, but
5479 been seen on some machines. Once this problem has been detected, the DSDT
5480 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
5482 Fixed two problems with AcpiReallocateRootTable during the root table
5484 When copying the root table to the new allocation, the length used was
5485 incorrect. The new size was used instead of the current table size,
5487 too much data was copied. Also, the count of available slots for ACPI
5489 was not set correctly. Alexey Starikovskiy, Bob Moore.
5491 Example Code and Data Size: These are the sizes for the OS-independent
5492 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5493 debug version of the code includes the debug output trace mechanism and
5495 much larger code and data size.
5498 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5499 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5501 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
5502 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
5504 2) iASL Compiler/Disassembler and Tools:
5506 iASL: Implement limited typechecking for values returned from predefined
5507 control methods. The type of any returned static (unnamed) object is now
5508 validated. For example, Return(1). ACPICA BZ 786.
5510 iASL: Fixed a predefined name object verification regression. Fixes a
5512 introduced in version 20100304. An error is incorrectly generated if a
5513 predefined name is declared as a static named object with a value defined
5514 using the keywords "Zero", "One", or "Ones". Lin Ming.
5516 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
5518 reducing the requested registry access rights. ACPICA BZ 842.
5520 Disassembler: fixed a possible fault when generating External()
5522 Introduced in commit ae7d6fd: Properly handle externals with parent-
5524 (carat). Fixes a string length allocation calculation. Lin Ming.
5526 ----------------------------------------
5527 04 March 2010. Summary of changes for version 20100304:
5529 1) ACPI CA Core Subsystem:
5531 Fixed a possible problem with the AML Mutex handling function
5532 AcpiExReleaseMutex where the function could fault under the very rare
5533 condition when the interpreter has blocked, the interpreter lock is
5535 the interpreter is then reentered via the same thread, and attempts to
5536 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
5540 Implemented additional configuration support for the AML "Debug Object".
5541 Output from the debug object can now be enabled via a global variable,
5542 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
5544 This debug output is now available in the release version of ACPICA
5546 of just the debug version. Also, the entire debug output module can now
5548 configured out of the ACPICA build if desired. One new file added,
5549 executer/exdebug.c. Lin Ming, Bob Moore.
5551 Added header support for the ACPI MCHI table (Management Controller Host
5552 Interface Table). This table was added in ACPI 4.0, but the defining
5554 has only recently become available.
5556 Standardized output of integer values for ACPICA warnings/errors. Always
5558 0x prefix for hex output, always use %u for unsigned integer decimal
5560 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
5562 invocations.) These invocations were converted from the original
5563 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
5565 Example Code and Data Size: These are the sizes for the OS-independent
5566 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5567 debug version of the code includes the debug output trace mechanism and
5569 much larger code and data size.
5572 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5573 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5575 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
5576 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
5578 2) iASL Compiler/Disassembler and Tools:
5580 iASL: Implemented typechecking support for static (non-control method)
5581 predefined named objects that are declared with the Name() operator. For
5582 example, the type of this object is now validated to be of type Integer:
5583 Name(_BBN, 1). This change migrates the compiler to using the core
5585 name table instead of maintaining a local version. Added a new file,
5586 aslpredef.c. ACPICA BZ 832.
5588 Disassembler: Added support for the ACPI 4.0 MCHI table.
5590 ----------------------------------------
5591 21 January 2010. Summary of changes for version 20100121:
5593 1) ACPI CA Core Subsystem:
5595 Added the 2010 copyright to all module headers and signons. This affects
5596 virtually every file in the ACPICA core subsystem, the iASL compiler, the
5597 tools/utilities, and the test suites.
5599 Implemented a change to the AcpiGetDevices interface to eliminate
5601 invocations of the _STA method. In the case where a specific _HID is
5602 requested, do not run _STA until a _HID match is found. This eliminates
5603 potentially dozens of _STA calls during a search for a particular
5605 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
5607 Implemented an additional repair for predefined method return values.
5609 to repair unexpected NULL elements within returned Package objects.
5612 Integer of value zero, a NULL String, or a zero-length Buffer as
5614 ACPICA BZ 818. Lin Ming, Bob Moore.
5616 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
5618 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
5620 64-bit AML integers). It is now obsolete and this change removes it from
5622 ACPICA code base, replaced by UINT64. The original typedef has been
5624 for now for compatibility with existing device driver code. ACPICA BZ
5627 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
5629 the parse tree object.
5631 Added additional warning options for the gcc-4 generation. Updated the
5633 accordingly. This includes some code restructuring to eliminate
5635 code, elimination of some gotos, elimination of unused return values,
5637 additional casting, and removal of redundant declarations.
5639 Example Code and Data Size: These are the sizes for the OS-independent
5640 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5641 debug version of the code includes the debug output trace mechanism and
5643 much larger code and data size.
5646 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
5647 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
5649 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
5650 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
5652 2) iASL Compiler/Disassembler and Tools:
5654 No functional changes for this release.
5656 ----------------------------------------
5657 14 December 2009. Summary of changes for version 20091214:
5659 1) ACPI CA Core Subsystem:
5661 Enhanced automatic data type conversions for predefined name repairs.
5663 change expands the automatic repairs/conversions for predefined name
5665 values to make Integers, Strings, and Buffers fully interchangeable.
5668 Buffer can be converted to a Package of Integers if necessary. The
5670 module was completely restructured. Lin Ming, Bob Moore.
5672 Implemented automatic removal of null package elements during predefined
5674 repairs. This change will automatically remove embedded and trailing NULL
5675 package elements from returned package objects that are defined to
5678 variable number of sub-packages. The driver is then presented with a
5680 with no null elements to deal with. ACPICA BZ 819.
5682 Implemented a repair for the predefined _FDE and _GTM names. The expected
5683 return value for both names is a Buffer of 5 DWORDs. This repair fixes
5685 possible problems (both seen in the field), where a package of integers
5687 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
5690 Implemented additional module-level code support. This change will
5692 execute module-level code that is not at the root of the namespace (under
5694 Device object, etc.). Now executes the code within the current scope
5696 of the root. ACPICA BZ 762. Lin Ming.
5698 Fixed possible mutex acquisition errors when running _REG methods. Fixes
5700 problem where mutex errors can occur when running a _REG method that is
5702 the same scope as a method-defined operation region or an operation
5704 under a module-level IF block. This type of code is rare, so the problem
5706 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
5708 Fixed a possible memory leak during module-level code execution. An
5710 could be leaked for each block of executed module-level code if the
5711 interpreter slack mode is enabled This change deletes any implicitly
5713 object from the module-level code block. Lin Ming.
5715 Removed messages for successful predefined repair(s). The repair
5717 was considered too wordy. Now, messages are only unconditionally emitted
5719 the return object cannot be repaired. Existing messages for successful
5720 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
5723 Example Code and Data Size: These are the sizes for the OS-independent
5724 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5725 debug version of the code includes the debug output trace mechanism and
5727 much larger code and data size.
5730 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
5731 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
5733 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
5734 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
5736 2) iASL Compiler/Disassembler and Tools:
5738 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
5740 were no longer automatically removed at the termination of the compile.
5742 acpiexec: Implemented the -f option to specify default region fill value.
5743 This option specifies the value used to initialize buffers that simulate
5744 operation regions. Default value is zero. Useful for debugging problems
5746 depend on a specific initial value for a region or field.
5748 ----------------------------------------
5749 12 November 2009. Summary of changes for version 20091112:
5751 1) ACPI CA Core Subsystem:
5753 Implemented a post-order callback to AcpiWalkNamespace. The existing
5754 interface only has a pre-order callback. This change adds an additional
5755 parameter for a post-order callback which will be more useful for bus
5757 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
5759 Modified the behavior of the operation region memory mapping cache for
5760 SystemMemory. Ensure that the memory mappings created for operation
5762 do not cross 4K page boundaries. Crossing a page boundary while mapping
5763 regions can cause kernel warnings on some hosts if the pages have
5765 attributes. Such regions are probably BIOS bugs, and this is the
5767 Linux BZ 14445. Lin Ming.
5769 Implemented an automatic repair for predefined methods that must return
5770 sorted lists. This change will repair (by sorting) packages returned by
5772 _PSS, and _TSS. Drivers can now assume that the packages are correctly
5774 and do not contain NULL package elements. Adds one new file,
5775 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
5777 Fixed a possible fault during predefined name validation if a return
5779 object contains NULL elements. Also adds a warning if a NULL element is
5780 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
5782 include repair or removal of all such NULL elements where possible.
5784 Implemented additional module-level executable AML code support. This
5786 will execute module-level code that is not at the root of the namespace
5787 (under a Device object, etc.) at table load time. Module-level executable
5789 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
5791 Implemented a new internal function to create Integer objects. This
5793 simplifies miscellaneous object creation code. ACPICA BZ 823.
5795 Reduced the severity of predefined repair messages, Warning to Info.
5797 the object was successfully repaired, a warning is too severe. Reduced to
5799 info message for now. These messages may eventually be changed to debug-
5803 Example Code and Data Size: These are the sizes for the OS-independent
5804 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5805 debug version of the code includes the debug output trace mechanism and
5807 much larger code and data size.
5810 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5811 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5813 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
5814 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
5816 2) iASL Compiler/Disassembler and Tools:
5818 iASL: Implemented Switch() with While(1) so that Break works correctly.
5820 change correctly implements the Switch operator with a surrounding
5822 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
5824 iASL: Added a message if a package initializer list is shorter than
5826 length. Adds a new remark for a Package() declaration if an initializer
5828 exists, but is shorter than the declared length of the package. Although
5829 technically legal, this is probably a coding error and it is seen in the
5830 field. ACPICA BZ 815. Lin Ming, Bob Moore.
5832 iASL: Fixed a problem where the compiler could fault after the maximum
5834 of errors was reached (200).
5836 acpixtract: Fixed a possible warning for pointer cast if the compiler
5838 level set very high.
5840 ----------------------------------------
5841 13 October 2009. Summary of changes for version 20091013:
5843 1) ACPI CA Core Subsystem:
5845 Fixed a problem where an Operation Region _REG method could be executed
5847 than once. If a custom address space handler is installed by the host
5849 the "initialize operation regions" phase of the ACPICA initialization,
5851 _REG methods for that address space could be executed twice. This change
5852 fixes the problem. ACPICA BZ 427. Lin Ming.
5854 Fixed a possible memory leak for the Scope() ASL operator. When the exact
5855 invocation of "Scope(\)" is executed (change scope to root), one internal
5856 operand object was leaked. Lin Ming.
5858 Implemented a run-time repair for the _MAT predefined method. If the _MAT
5859 return value is defined as a Field object in the AML, and the field
5860 size is less than or equal to the default width of an integer (32 or
5862 can incorrectly return an Integer instead of a Buffer. ACPICA now
5863 automatically repairs this problem. ACPICA BZ 810.
5865 Implemented a run-time repair for the _BIF and _BIX predefined methods.
5867 "OEM Information" field is often incorrectly returned as an Integer with
5868 value zero if the field is not supported by the platform. This is due to
5870 ambiguity in the ACPI specification. The field should always be a string.
5871 ACPICA now automatically repairs this problem by returning a NULL string
5872 within the returned Package. ACPICA BZ 807.
5874 Example Code and Data Size: These are the sizes for the OS-independent
5875 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5876 debug version of the code includes the debug output trace mechanism and
5878 much larger code and data size.
5881 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5882 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5884 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5885 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5887 2) iASL Compiler/Disassembler and Tools:
5889 Disassembler: Fixed a problem where references to external symbols that
5890 contained one or more parent-prefixes (carats) were not handled
5892 possibly causing a fault. ACPICA BZ 806. Lin Ming.
5894 Disassembler: Restructured the code so that all functions that handle
5895 external symbols are in a single module. One new file is added,
5898 AML Debugger: Added a max count argument for the Batch command (which
5899 executes multiple predefined methods within the namespace.)
5901 iASL: Updated the compiler documentation (User Reference.) Available at
5902 http://www.acpica.org/documentation/. ACPICA BZ 750.
5904 AcpiXtract: Updated for Lint and other formatting changes. Close all open
5907 ----------------------------------------
5908 03 September 2009. Summary of changes for version 20090903:
5910 1) ACPI CA Core Subsystem:
5912 For Windows Vista compatibility, added the automatic execution of an _INI
5913 method located at the namespace root (\_INI). This method is executed at
5914 table load time. This support is in addition to the automatic execution
5916 \_SB._INI. Lin Ming.
5918 Fixed a possible memory leak in the interpreter for AML package objects
5920 the package initializer list is longer than the defined size of the
5922 This apparently can only happen if the BIOS changes the package size on
5924 fly (seen in a _PSS object), as ASL compilers do not allow this. The
5925 interpreter will truncate the package to the defined size (and issue an
5927 message), but previously could leave the extra objects undeleted if they
5929 pre-created during the argument processing (such is the case if the
5931 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
5933 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
5934 This has been reported in the field. Previously, ACPICA would zero out
5936 buffer/string. Now, the operation is treated as a noop. Provides Windows
5937 compatibility. ACPICA BZ 803. Lin Ming.
5939 Removed an extraneous error message for ASL constructs of the form
5940 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
5942 are seen in many BIOSs and are once again treated as NOOPs and no error
5944 emitted when they are encountered. ACPICA BZ 785.
5946 Fixed an extraneous warning message if a _DSM reserved method returns a
5947 Package object. _DSM can return any type of object, so validation on the
5948 return type cannot be performed. ACPICA BZ 802.
5950 Example Code and Data Size: These are the sizes for the OS-independent
5951 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5952 debug version of the code includes the debug output trace mechanism and
5954 much larger code and data size.
5957 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5958 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5960 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5961 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5963 2) iASL Compiler/Disassembler and Tools:
5965 iASL: Fixed a problem with the use of the Alias operator and Resource
5966 Templates. The correct alias is now constructed and no error is emitted.
5969 iASL: Implemented the -I option to specify additional search directories
5971 include files. Allows multiple additional search paths for include files.
5972 Directories are searched in the order specified on the command line
5974 the local directory is searched.) ACPICA BZ 800.
5976 iASL: Fixed a problem where the full pathname for include files was not
5977 emitted for warnings/errors. This caused the IDE support to not work
5978 properly. ACPICA BZ 765.
5980 iASL: Implemented the -@ option to specify a Windows-style response file
5981 containing additional command line options. ACPICA BZ 801.
5983 AcpiExec: Added support to load multiple AML files simultaneously (such
5986 DSDT and multiple SSDTs). Also added support for wildcards within the AML
5987 pathname. These features allow all machine tables to be easily loaded and
5988 debugged together. ACPICA BZ 804.
5990 Disassembler: Added missing support for disassembly of HEST table Error
5994 ----------------------------------------
5995 30 July 2009. Summary of changes for version 20090730:
5997 The ACPI 4.0 implementation for ACPICA is complete with this release.
5999 1) ACPI CA Core Subsystem:
6001 ACPI 4.0: Added header file support for all new and changed ACPI tables.
6002 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
6004 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
6006 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
6008 have been some ACPI 4.0 changes to other existing tables. Split the large
6009 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
6011 ACPI 4.0: Implemented predefined name validation for all new names. There
6013 31 new names in ACPI 4.0. The predefined validation module was split into
6015 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
6017 Implemented support for so-called "module-level executable code". This is
6018 executable AML code that exists outside of any control method and is
6020 to be executed at table load time. Although illegal since ACPI 2.0, this
6022 of code still exists and is apparently still being created. Blocks of
6024 code are now detected and executed as intended. Currently, the code
6026 must exist under either an If, Else, or While construct; these are the
6027 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
6029 Implemented an automatic dynamic repair for predefined names that return
6030 nested Package objects. This applies to predefined names that are defined
6032 return a variable-length Package of sub-packages. If the number of sub-
6033 packages is one, BIOS code is occasionally seen that creates a simple
6035 package with no sub-packages. This code attempts to fix the problem by
6036 wrapping a new package object around the existing package. These methods
6038 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
6042 Fixed a regression introduced in 20090625 for the AcpiGetDevices
6044 The _HID/_CID matching was broken and no longer matched IDs correctly.
6048 Fixed a problem with AcpiReset where the reset would silently fail if the
6049 register was one of the protected I/O ports. AcpiReset now bypasses the
6051 validation mechanism. This may eventually be driven into the
6055 Fixed a regression related to the recent update of the AcpiRead/Write
6056 interfaces. A sleep/suspend could fail if the optional PM2 Control
6058 does not exist during an attempt to write the Bus Master Arbitration bit.
6059 (However, some hosts already delete the code that writes this bit, and
6061 code may in fact be obsolete at this date.) ACPICA BZ 799.
6063 Fixed a problem where AcpiTerminate could fault if inadvertently called
6065 in succession. ACPICA BZ 795.
6067 Example Code and Data Size: These are the sizes for the OS-independent
6068 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6069 debug version of the code includes the debug output trace mechanism and
6071 much larger code and data size.
6074 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6075 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6077 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
6078 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
6080 2) iASL Compiler/Disassembler and Tools:
6082 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
6083 changes to existing tables. ACPICA BZ 775.
6085 ----------------------------------------
6086 25 June 2009. Summary of changes for version 20090625:
6088 The ACPI 4.0 Specification was released on June 16 and is available at
6089 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
6090 continue for the next few releases.
6092 1) ACPI CA Core Subsystem:
6094 ACPI 4.0: Implemented interpreter support for the IPMI operation region
6095 address space. Includes support for bi-directional data buffers and an
6097 address space handler (to be installed by an IPMI device driver.) ACPICA
6101 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
6103 support in both the header files and the disassembler.
6105 Completed a major update for the AcpiGetObjectInfo external interface.
6107 - Support for variable, unlimited length HID, UID, and CID strings.
6108 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
6110 - Call the _SxW power methods on behalf of a device object.
6111 - Determine if a device is a PCI root bridge.
6112 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
6113 These changes will require an update to all callers of this interface.
6115 the updated ACPICA Programmer Reference for details. One new source file
6117 been added - utilities/utids.c. ACPICA BZ 368, 780.
6119 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
6120 transfers. The Value parameter has been extended from 32 bits to 64 bits
6122 order to support new ACPI 4.0 tables. These changes will require an
6125 all callers of these interfaces. See the ACPICA Programmer Reference for
6126 details. ACPICA BZ 768.
6128 Fixed several problems with AcpiAttachData. The handler was not invoked
6130 the host node was deleted. The data sub-object was not automatically
6132 when the host node was deleted. The interface to the handler had an
6134 parameter, this was removed. ACPICA BZ 778.
6136 Enhanced the function that dumps ACPI table headers. All non-printable
6137 characters in the string fields are now replaced with '?' (Signature,
6139 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
6140 these fields are occasionally seen in the field. ACPICA BZ 788.
6142 Fixed a problem with predefined method repair code where the code that
6143 attempts to repair/convert an object of incorrect type is only executed
6145 the first time the predefined method is called. The mechanism that
6147 warnings on subsequent calls was interfering with the repair mechanism.
6150 Fixed a possible memory leak in the predefined validation/repair code
6153 buffer is automatically converted to an expected string object.
6155 Removed obsolete 16-bit files from the distribution and from the current
6157 tree head. ACPICA BZ 776.
6159 Example Code and Data Size: These are the sizes for the OS-independent
6160 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6161 debug version of the code includes the debug output trace mechanism and
6163 much larger code and data size.
6166 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6167 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6169 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
6170 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
6172 2) iASL Compiler/Disassembler and Tools:
6174 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
6175 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
6177 ACPI 4.0: iASL - implemented compile-time validation support for all new
6178 predefined names and control methods (31 total). ACPICA BZ 769.
6180 ----------------------------------------
6181 21 May 2009. Summary of changes for version 20090521:
6183 1) ACPI CA Core Subsystem:
6185 Disabled the preservation of the SCI enable bit in the PM1 control
6187 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
6190 a "preserved" bit - "OSPM always preserves this bit position", section
6191 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
6192 because the bit needs to be explicitly set by the OS as a workaround. No
6193 machines fail if the bit is not preserved. Therefore, ACPICA no longer
6194 attempts to preserve this bit.
6196 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
6197 incorrectly formed _PRT package could cause a fault. Added validation to
6198 ensure that each package element is actually a sub-package.
6200 Implemented a new interface to install or override a single control
6202 AcpiInstallMethod. This interface is useful when debugging in order to
6204 an existing method or to install a missing method without having to
6206 the entire ACPI table. See the ACPICA Programmer Reference for use and
6207 examples. Lin Ming, Bob Moore.
6209 Fixed several reference count issues with the DdbHandle object that is
6210 created from a Load or LoadTable operator. Prevent premature deletion of
6212 object. Also, mark the object as invalid once the table has been
6214 This is needed because the handle itself may not be deleted after the
6216 unload, depending on whether it has been stored in a named object by the
6219 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
6220 mutexes of the same sync level are acquired but then not released in
6222 opposite order, the internally maintained Current Sync Level becomes
6224 and can cause subsequent execution errors. ACPICA BZ 471.
6226 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
6227 specification has been changed to make the SyncLevel for mutex objects
6229 useful. When releasing a mutex, the SyncLevel of the mutex must now be
6231 same as the current sync level. This makes more sense than the previous
6233 (SyncLevel less than or equal). This change updates the code to match the
6236 Fixed a problem with the local version of the AcpiOsPurgeCache function.
6238 (local) cache must be locked during all cache object deletions. Andrew
6241 Updated the Load operator to use operation region interfaces. This
6243 direct memory mapping with region access calls. Now, all region accesses
6245 through the installed region handler as they should.
6247 Simplified and optimized the NsGetNextNode function. Reduced parameter
6249 and reduced code for this frequently used function.
6251 Example Code and Data Size: These are the sizes for the OS-independent
6252 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6253 debug version of the code includes the debug output trace mechanism and
6255 much larger code and data size.
6258 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6259 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6261 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
6262 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
6264 2) iASL Compiler/Disassembler and Tools:
6266 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
6268 with sub-table disassembly and handling invalid sub-tables. Attempt
6270 after an invalid sub-table ID.
6272 ----------------------------------------
6273 22 April 2009. Summary of changes for version 20090422:
6275 1) ACPI CA Core Subsystem:
6277 Fixed a compatibility issue with the recently released I/O port
6279 mechanism. For windows compatibility, 1) On a port protection violation,
6280 simply ignore the request and do not return an exception (allow the
6282 method to continue execution.) 2) If only part of the request overlaps a
6283 protected port, read/write the individual ports that are not protected.
6287 Enhanced the execution of the ASL/AML BreakPoint operator so that it
6289 breaks into the AML debugger if the debugger is present. This matches the
6290 ACPI-defined behavior.
6292 Fixed several possible warnings related to the use of the configurable
6293 ACPI_THREAD_ID. This type can now be configured as either an integer or a
6294 pointer with no warnings. Also fixes several warnings in printf-like
6295 statements for the 64-bit build when the type is configured as a pointer.
6298 Fixed a number of possible warnings when compiling with gcc 4+ (depending
6300 warning options.) Examples include printf formats, aliasing, unused
6302 missing prototypes, missing switch default statements, use of non-ANSI
6303 library functions, use of non-ANSI constructs. See generate/unix/Makefile
6305 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
6307 Example Code and Data Size: These are the sizes for the OS-independent
6308 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6309 debug version of the code includes the debug output trace mechanism and
6311 much larger code and data size.
6314 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6315 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6317 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
6318 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
6320 2) iASL Compiler/Disassembler and Tools:
6322 iASL: Fixed a generation warning from Bison 2.3 and fixed several
6327 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
6329 correctly digest Windows/DOS formatted files (with CR/LF).
6331 iASL: Added a new option for "quiet mode" (-va) that produces only the
6332 compilation summary, not individual errors and warnings. Useful for large
6335 AcpiExec: Implemented a new option (-z) to enable a forced
6337 timeout that can be used to detect hang conditions during execution of
6339 code (includes both internal semaphores and AML-defined mutexes and
6342 Added new makefiles for the generation of acpica in a generic unix-like
6343 environment. These makefiles are intended to generate the acpica tools
6345 utilities from the original acpica git source tree structure.
6347 Test Suites: Updated and cleaned up the documentation files. Updated the
6348 copyrights to 2009, affecting all source files. Use the new version of
6350 with quiet mode. Increased the number of available semaphores in the
6352 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
6354 an alternate implementation of the semaphore timeout to allow aslts to
6355 execute fully on Cygwin.
6357 ----------------------------------------
6358 20 March 2009. Summary of changes for version 20090320:
6360 1) ACPI CA Core Subsystem:
6362 Fixed a possible race condition between AcpiWalkNamespace and dynamic
6364 unloads. Added a reader/writer locking mechanism to allow multiple
6366 namespace walks (readers), but block a dynamic table unload until it can
6368 exclusive write access to the namespace. This fixes a problem where a
6370 unload could (possibly catastrophically) delete the portion of the
6372 that is currently being examined by a walk. Adds a new file, utlock.c,
6374 implements the reader/writer lock mechanism. ACPICA BZ 749.
6376 Fixed a regression introduced in version 20090220 where a change to the
6378 handling could cause the ACPICA subsystem to access non-existent I/O
6381 Modified the handling of FADT register and table (FACS/DSDT) addresses.
6383 FADT can contain both 32-bit and 64-bit versions of these addresses.
6384 Previously, the 64-bit versions were favored, meaning that if both 32 and
6386 versions were valid, but not equal, the 64-bit version was used. This was
6387 found to cause some machines to fail. Now, in this case, the 32-bit
6389 is used instead. This now matches the Windows behavior.
6391 Implemented a new mechanism to protect certain I/O ports. Provides
6393 compatibility and protects the standard PC I/O ports from access via AML
6394 code. Adds a new file, hwvalid.c
6396 Fixed a possible extraneous warning message from the FADT support. The
6397 message warns of a 32/64 length mismatch between the legacy and GAS
6398 definitions for a register.
6400 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
6402 made obsolete by the port protection mechanism above. It was previously
6404 to validate the entire address range of an operation region, which could
6406 incorrect if the range included illegal ports, but fields within the
6407 operation region did not actually access those ports. Validation is now
6408 performed on a per-field basis instead of the entire region.
6410 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
6411 Ignored bits must be "preserved" according to the ACPI spec. Usually,
6413 means a read/modify/write when writing to the register. However, for
6415 registers, writing a one means clear the event. Writing a zero means
6417 the event (do not clear.) This behavior is clarified in the ACPI 4.0
6419 and the ACPICA code now simply always writes a zero to the ignored bit.
6421 Modified the handling of ignored bits for the PM1 A/B Control Registers.
6423 per the ACPI specification, for the control registers, preserve
6424 (read/modify/write) all bits that are defined as either reserved or
6427 Updated the handling of write-only bits in the PM1 A/B Control Registers.
6428 When reading the register, zero the write-only bits as per the ACPI spec.
6429 ACPICA BZ 443. Lin Ming.
6431 Removed "Linux" from the list of supported _OSI strings. Linux no longer
6432 wants to reply true to this request. The Windows strings are the only
6434 through the AML that are tested and known to work properly.
6437 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6438 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6440 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
6441 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
6443 2) iASL Compiler/Disassembler and Tools:
6445 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
6449 ----------------------------------------
6450 20 February 2009. Summary of changes for version 20090220:
6452 1) ACPI CA Core Subsystem:
6454 Optimized the ACPI register locking. Removed locking for reads from the
6456 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
6458 not required when reading the single-bit registers. The
6459 AcpiGetRegisterUnlocked function is no longer needed and has been
6461 This will improve performance for reads on these registers. ACPICA BZ
6464 Fixed the parameter validation for AcpiRead/Write. Now return
6465 AE_BAD_PARAMETER if the input register pointer is null, and
6468 the register has an address of zero. Previously, these cases simply
6470 AE_OK. For optional registers such as PM1B status/enable/control, the
6472 should check for a valid register address before calling. ACPICA BZ 748.
6474 Renamed the external ACPI bit register access functions. Renamed
6475 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
6476 functions. The new names are AcpiReadBitRegister and
6477 AcpiWriteBitRegister.
6478 Also, restructured the code for these functions by simplifying the code
6480 and condensing duplicate code to reduce code size.
6482 Added new functions to transparently handle the possibly split PM1 A/B
6483 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
6485 now handle the split registers for PM1 Status, Enable, and Control.
6490 Added a function to handle the PM1 control registers,
6491 AcpiHwWritePm1Control.
6492 This function writes both of the PM1 control registers (A/B). These
6494 are different than the PM1 A/B status and enable registers in that
6496 values can be written to the A/B registers. Most notably, the SLP_TYP
6498 can be different, as per the values returned from the _Sx predefined
6501 Removed an extra register write within AcpiHwClearAcpiStatus. This
6503 was writing an optional PM1B status register twice. The existing call to
6505 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
6507 register. ACPICA BZ 751.
6509 Split out the PM1 Status registers from the FADT. Added new globals for
6511 registers (A/B), similar to the way the PM1 Enable registers are handled.
6512 Instead of overloading the FADT Event Register blocks. This makes the
6514 clearer and less prone to error.
6516 Fixed the warning message for when the platform contains too many ACPI
6518 for the default size of the global root table data structure. The
6520 for the truncation value was incorrect.
6522 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
6523 obsolete macro, since it is now a simple reference to ->common.type.
6525 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
6527 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
6528 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
6529 simply SLEEP_TYPE. ACPICA BZ 754.
6531 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
6532 function is only needed on 64-bit host operating systems and is thus not
6533 included for 32-bit hosts.
6535 Debug output: print the input and result for invocations of the _OSI
6537 control method via the ACPI_LV_INFO debug level. Also, reduced some of
6539 verbosity of this debug level. Len Brown.
6541 Example Code and Data Size: These are the sizes for the OS-independent
6542 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6543 debug version of the code includes the debug output trace mechanism and
6545 much larger code and data size.
6548 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6549 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6551 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
6552 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
6554 2) iASL Compiler/Disassembler and Tools:
6556 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
6557 various legal performance profiles.
6559 ----------------------------------------
6560 23 January 2009. Summary of changes for version 20090123:
6562 1) ACPI CA Core Subsystem:
6564 Added the 2009 copyright to all module headers and signons. This affects
6565 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6566 the tools/utilities.
6568 Implemented a change to allow the host to override any ACPI table,
6570 dynamically loaded tables. Previously, only the DSDT could be replaced by
6572 host. With this change, the AcpiOsTableOverride interface is called for
6574 table found in the RSDT/XSDT during ACPICA initialization, and also
6576 a table is dynamically loaded via the AML Load operator.
6578 Updated FADT flag definitions, especially the Boot Architecture flags.
6580 Debugger: For the Find command, automatically pad the input ACPI name
6582 underscores if the name is shorter than 4 characters. This enables a
6584 with the actual namespace entry which is itself padded with underscores.
6586 Example Code and Data Size: These are the sizes for the OS-independent
6587 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6588 debug version of the code includes the debug output trace mechanism and
6590 much larger code and data size.
6593 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6594 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6596 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
6597 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
6599 2) iASL Compiler/Disassembler and Tools:
6601 Fix build error under Bison-2.4.
6603 Dissasembler: Enhanced FADT support. Added decoding of the Boot
6605 flags. Now decode all flags, regardless of the FADT version. Flag output
6606 includes the FADT version which first defined each flag.
6608 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
6610 DSDT). Windows only.
6612 ----------------------------------------
6613 04 December 2008. Summary of changes for version 20081204:
6615 1) ACPI CA Core Subsystem:
6617 The ACPICA Programmer Reference has been completely updated and revamped
6619 this release. This includes updates to the external interfaces, OSL
6620 interfaces, the overview sections, and the debugger reference.
6622 Several new ACPICA interfaces have been implemented and documented in the
6623 programmer reference:
6624 AcpiReset - Writes the reset value to the FADT-defined reset register.
6625 AcpiDisableAllGpes - Disable all available GPEs.
6626 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
6627 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
6628 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
6629 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
6630 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
6632 Most of the public ACPI hardware-related interfaces have been moved to a
6634 file, components/hardware/hwxface.c
6636 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
6637 register lengths within the FADT are now used, and the low level ACPI
6638 register access no longer hardcodes the ACPI register lengths. Given that
6639 there may be some risk in actually trusting the FADT register lengths, a
6641 time option was added to fall back to the default hardcoded lengths if
6643 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
6644 option is set to true for now, and a warning is issued if a suspicious
6646 register length is overridden with the default value.
6648 Fixed a reference count issue in NsRepairObject. This problem was
6650 in version 20081031 as part of a fix to repair Buffer objects within
6653 Added semaphore support to the Linux/Unix application OS-services layer
6654 (OSL). ACPICA BZ 448. Lin Ming.
6656 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
6658 be implemented in the OSL, or will binary semaphores be used instead.
6660 Example Code and Data Size: These are the sizes for the OS-independent
6661 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6662 debug version of the code includes the debug output trace mechanism and
6664 much larger code and data size.
6667 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6668 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6670 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
6671 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
6673 2) iASL Compiler/Disassembler and Tools:
6675 iASL: Completed the '-e' option to include additional ACPI tables in
6678 aid with disassembly and External statement generation. ACPICA BZ 742.
6682 iASL: Removed the "named object in while loop" error. The compiler cannot
6683 determine how many times a loop will execute. ACPICA BZ 730.
6685 Disassembler: Implemented support for FADT revision 2 (MS extension).
6689 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
6692 ----------------------------------------
6693 31 October 2008. Summary of changes for version 20081031:
6695 1) ACPI CA Core Subsystem:
6697 Restructured the ACPICA header files into public/private. acpi.h now
6699 only the "public" acpica headers. All other acpica headers are "private"
6701 should not be included by acpica users. One new file, accommon.h is used
6703 include the commonly used private headers for acpica code generation.
6705 plans include moving all private headers to a new subdirectory.
6707 Implemented an automatic Buffer->String return value conversion for
6708 predefined ACPI methods. For these methods (such as _BIF), added
6710 conversion for return objects that are required to be a String, but a
6712 was found instead. This can happen when reading string battery data from
6714 operation region, because it used to be difficult to convert the data
6716 buffer to string from within the ASL. Ensures that the host OS is
6718 with a valid null-terminated string. Linux BZ 11822.
6720 Updated the FACS waking vector interfaces. Split
6721 AcpiSetFirmwareWakingVector
6722 into two: one for the 32-bit vector, another for the 64-bit vector. This
6724 required because the host OS must setup the wake much differently for
6726 vector (real vs. protected mode, etc.) and the interface itself should
6729 deciding which vector to use. Also, eliminated the
6730 GetFirmwareWakingVector
6731 interface, as it served no purpose (only the firmware reads the vector,
6733 only writes the vector.) ACPICA BZ 731.
6735 Implemented a mechanism to escape infinite AML While() loops. Added a
6737 counter to force exit from AML While loops if the count becomes too
6739 This can occur in poorly written AML when the hardware does not respond
6740 within a while loop and the loop does not implement a timeout. The
6742 loop count is configurable. A new exception code is returned when a loop
6744 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
6746 Optimized the execution of AML While loops. Previously, a control state
6747 object was allocated and freed for each execution of the loop. The
6748 optimization is to simply reuse the control state for each iteration.
6750 speeds up the raw loop execution time by about 5%.
6752 Enhanced the implicit return mechanism. For Windows compatibility, return
6754 implicit integer of value zero for methods that contain no executable
6756 Such methods are seen in the field as stubs (presumably), and can cause
6757 drivers to fail if they expect a return value. Lin Ming.
6759 Allow multiple backslashes as root prefixes in namepaths. In a fully
6760 qualified namepath, allow multiple backslash prefixes. This can happen
6762 is seen in the field) because of the use of a double-backslash in strings
6763 (since backslash is the escape character) causing confusion. ACPICA BZ
6767 Emit a warning if two different FACS or DSDT tables are discovered in the
6768 FADT. Checks if there are two valid but different addresses for the FACS
6770 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
6772 Consolidated the method argument count validation code. Merged the code
6774 validates control method argument counts into the predefined validation
6775 module. Eliminates possible multiple warnings for incorrect argument
6778 Implemented ACPICA example code. Includes code for ACPICA initialization,
6779 handler installation, and calling a control method. Available at
6780 source/tools/examples.
6782 Added a global pointer for FACS table to simplify internal FACS access.
6784 the global pointer instead of using AcpiGetTableByIndex for each FACS
6786 This simplifies the code for the Global Lock and the Firmware Waking
6789 Example Code and Data Size: These are the sizes for the OS-independent
6790 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6791 debug version of the code includes the debug output trace mechanism and
6793 much larger code and data size.
6796 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6797 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6799 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6800 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6802 2) iASL Compiler/Disassembler and Tools:
6804 iASL: Improved disassembly of external method calls. Added the -e option
6806 allow the inclusion of additional ACPI tables to help with the
6809 method invocations and the generation of external declarations during the
6810 disassembly. Certain external method invocations cannot be disassembled
6811 properly without the actual declaration of the method. Use the -e option
6813 include the table where the external method(s) are actually declared.
6815 useful for disassembling SSDTs that make method calls back to the master
6816 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
6818 -e dsdt.aml ssdt1.aml
6820 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
6821 problem where the use of an alias within a namepath would result in a not
6822 found error or cause the compiler to fault. Also now allows forward
6823 references from the Alias operator itself. ACPICA BZ 738.
6825 ----------------------------------------
6826 26 September 2008. Summary of changes for version 20080926:
6828 1) ACPI CA Core Subsystem:
6830 Designed and implemented a mechanism to validate predefined ACPI methods
6832 objects. This code validates the predefined ACPI objects (objects whose
6834 start with underscore) that appear in the namespace, at the time they are
6835 evaluated. The argument count and the type of the returned object are
6836 validated against the ACPI specification. The purpose of this validation
6838 to detect problems with the BIOS-implemented predefined ACPI objects
6840 the results are returned to the ACPI-related drivers. Future enhancements
6842 include actual repair of incorrect return objects where possible. Two new
6843 files are nspredef.c and acpredef.h.
6845 Fixed a fault in the AML parser if a memory allocation fails during the
6847 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
6849 Fixed an issue with implicit return compatibility. This change improves
6851 implicit return mechanism to be more compatible with the MS interpreter.
6853 Ming, ACPICA BZ 349.
6855 Implemented support for zero-length buffer-to-string conversions. Allow
6857 length strings during interpreter buffer-to-string conversions. For
6859 during the ToDecimalString and ToHexString operators, as well as implicit
6860 conversions. Fiodor Suietov, ACPICA BZ 585.
6862 Fixed two possible memory leaks in the error exit paths of
6863 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
6865 similar in that they use a stack of state objects in order to eliminate
6866 recursion. The stack must be fully unwound and deallocated if an error
6867 occurs. Lin Ming. ACPICA BZ 383.
6869 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
6871 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
6872 Moore ACPICA BZ 442.
6874 Removed the obsolete version number in module headers. Removed the
6875 "$Revision" number that appeared in each module header. This version
6877 was useful under SourceSafe and CVS, but has no meaning under git. It is
6879 only incorrect, it could also be misleading.
6881 Example Code and Data Size: These are the sizes for the OS-independent
6882 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6883 debug version of the code includes the debug output trace mechanism and
6885 much larger code and data size.
6888 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6889 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6891 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6892 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6894 ----------------------------------------
6895 29 August 2008. Summary of changes for version 20080829:
6897 1) ACPI CA Core Subsystem:
6899 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
6900 Reference. Changes include the elimination of cheating on the Object
6902 for the DdbHandle subtype, addition of a reference class field to
6903 differentiate the various reference types (instead of an AML opcode), and
6905 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
6907 Reduce an error to a warning for an incorrect method argument count.
6908 Previously aborted with an error if too few arguments were passed to a
6909 control method via the external ACPICA interface. Now issue a warning
6911 and continue. Handles the case where the method inadvertently declares
6913 many arguments, but does not actually use the extra ones. Applies mainly
6915 the predefined methods. Lin Ming. Linux BZ 11032.
6917 Disallow the evaluation of named object types with no intrinsic value.
6919 AE_TYPE for objects that have no value and therefore evaluation is
6921 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
6923 these types were allowed, but an exception would be generated at some
6925 during the evaluation. Now, the error is generated up front.
6927 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
6928 (nsnames.c). Fixes a leak in the error exit path.
6930 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
6932 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
6934 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
6937 Removed obsolete and/or unused exception codes from the acexcep.h header.
6938 There is the possibility that certain device drivers may be affected if
6940 use any of these exceptions.
6942 The ACPICA documentation has been added to the public git source tree,
6944 acpica/documents. Included are the ACPICA programmer reference, the iASL
6945 compiler reference, and the changes.txt release logfile.
6947 Example Code and Data Size: These are the sizes for the OS-independent
6948 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6949 debug version of the code includes the debug output trace mechanism and
6951 much larger code and data size.
6954 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6955 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6957 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6958 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6960 2) iASL Compiler/Disassembler and Tools:
6962 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
6963 defines _SCP with 3 arguments. Previous versions defined it with only 1
6964 argument. iASL now allows both definitions.
6966 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
6968 length subtables when disassembling ACPI tables. Also fixed a couple of
6969 errors where a full 16-bit table type field was not extracted from the
6973 acpisrc: Improve comment counting mechanism for generating source code
6974 statistics. Count first and last lines of multi-line comments as
6976 not comment lines. Handle Linux legal header in addition to standard
6980 ----------------------------------------
6982 29 July 2008. Summary of changes for version 20080729:
6984 1) ACPI CA Core Subsystem:
6986 Fix a possible deadlock in the GPE dispatch. Remove call to
6987 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
6989 to acquire the GPE lock but can deadlock since the GPE lock is already
6991 at dispatch time. This code was introduced in version 20060831 as a
6993 to Linux BZ 6881 and has since been removed from Linux.
6995 Add a function to dereference returned reference objects. Examines the
6997 object from a call to AcpiEvaluateObject. Any Index or RefOf references
6999 automatically dereferenced in an attempt to return something useful
7001 reference types cannot be converted into an external ACPI_OBJECT.)
7003 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
7005 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
7006 subtables for the MADT and one new subtable for the SRAT. Includes
7007 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
7009 Specification, June 2008.
7011 Additional error checking for pathname utilities. Add error check after
7013 calls to AcpiNsGetPathnameLength. Add status return from
7014 AcpiNsBuildExternalPath and check after all calls. Add parameter
7016 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
7018 Return status from the global init function AcpiUtGlobalInitialize. This
7020 used by both the kernel subsystem and the utilities such as iASL
7022 The function could possibly fail when the caches are initialized. Yang
7025 Add a function to decode reference object types to strings. Created for
7026 improved error messages.
7028 Improve object conversion error messages. Better error messages during
7030 conversion from internal to the external ACPI_OBJECT. Used for external
7032 to AcpiEvaluateObject.
7034 Example Code and Data Size: These are the sizes for the OS-independent
7035 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7036 debug version of the code includes the debug output trace mechanism and
7038 much larger code and data size.
7041 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7042 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7044 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7045 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
7047 2) iASL Compiler/Disassembler and Tools:
7049 Debugger: fix a possible hang when evaluating non-methods. Fixes a
7051 introduced in version 20080701. If the object being evaluated (via
7053 command) is not a method, the debugger can hang while trying to obtain
7055 existent parameters.
7057 iASL: relax error for using reserved "_T_x" identifiers. These names can
7058 appear in a disassembled ASL file if they were emitted by the original
7059 compiler. Instead of issuing an error or warning and forcing the user to
7060 manually change these names, issue a remark instead.
7062 iASL: error if named object created in while loop. Emit an error if any
7064 object is created within a While loop. If allowed, this code will
7067 run-time error on the second iteration of the loop when an attempt is
7070 create the same named object twice. ACPICA bugzilla 730.
7072 iASL: Support absolute pathnames for include files. Add support for
7074 pathnames within the Include operator. previously, only relative
7078 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
7080 The ACPI spec requires one interrupt minimum. BZ 423
7082 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
7083 Handles the case for the Interrupt Resource Descriptor where
7084 the ResourceSource argument is omitted but ResourceSourceIndex
7085 is present. Now leave room for the Index. BZ 426
7087 iASL: Prevent error message if CondRefOf target does not exist. Fixes
7089 where an error message is emitted if the target does not exist. BZ 516
7091 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
7092 (get ACPI tables on Windows). This was apparently broken in version
7095 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
7097 the EOF happens immediately after the last table in the input file. Print
7098 completion message. Previously, no message was displayed in this case.
7100 ----------------------------------------
7101 01 July 2008. Summary of changes for version 20080701:
7103 0) Git source tree / acpica.org
7105 Fixed a problem where a git-clone from http would not transfer the entire
7108 1) ACPI CA Core Subsystem:
7110 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
7111 enable bit. Now performs a read-change-write of the enable register
7113 of simply writing out the cached enable mask. This will prevent
7115 enabling of GPEs if a rogue GPE is received during initialization (before
7117 handlers are installed.)
7119 Implemented a copy for dynamically loaded tables. Previously, dynamically
7120 loaded tables were simply mapped - but on some machines this memory is
7121 corrupted after suspend. Now copy the table to a local buffer. For the
7122 OpRegion case, added checksum verify. Use the table length from the table
7123 header, not the region length. For the Buffer case, use the table length
7124 also. Dennis Noordsij, Bob Moore. BZ 10734
7126 Fixed a problem where the same ACPI table could not be dynamically loaded
7128 unloaded more than once. Without this change, a table cannot be loaded
7130 once it has been loaded/unloaded one time. The current mechanism does not
7131 unregister a table upon an unload. During a load, if the same table is
7133 this no longer returns an exception. BZ 722
7135 Fixed a problem where the wrong descriptor length was calculated for the
7136 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
7138 are calculated as 12 bytes long, but the actual length in the internal
7139 descriptor is 16 because of the round-up to 8 on the 64-bit build.
7141 by Linn Crosetto. BZ 728
7143 Fixed a possible memory leak in the Unload operator. The DdbHandle
7145 by Load() did not have its reference count decremented during unload,
7147 to a memory leak. Lin Ming. BZ 727
7149 Fixed a possible memory leak when deleting thermal/processor objects. Any
7150 associated notify handlers (and objects) were not being deleted. Fiodor
7153 Fixed the ordering of the ASCII names in the global mutex table to match
7155 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
7157 Vegard Nossum. BZ 726
7159 Enhanced the AcpiGetObjectInfo interface to return the number of required
7160 arguments if the object is a control method. Added this call to the
7162 so the proper number of default arguments are passed to a method. This
7163 prevents a warning when executing methods from AcpiExec.
7165 Added a check for an invalid handle in AcpiGetObjectInfo. Return
7166 AE_BAD_PARAMETER if input handle is invalid. BZ 474
7168 Fixed an extraneous warning from exconfig.c on the 64-bit build.
7170 Example Code and Data Size: These are the sizes for the OS-independent
7171 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7172 debug version of the code includes the debug output trace mechanism and
7174 much larger code and data size.
7177 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7178 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7180 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
7181 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
7183 2) iASL Compiler/Disassembler and Tools:
7185 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
7186 resource descriptor names.
7188 iASL: Detect invalid ASCII characters in input (windows version). Removed
7190 "-CF" flag from the flex compile, enables correct detection of non-ASCII
7191 characters in the input. BZ 441
7193 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
7195 "result of operation not used" warning when the DDB handle returned from
7196 LoadTable is not used. The warning is not needed. BZ 590
7198 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
7201 pass address of table to the AML. Added option to disable OpRegion
7203 to allow creation of an OpRegion with a real address that was passed to
7205 All of this allows testing of the Load and Unload operators from
7208 Debugger: update tables command for unloaded tables. Handle unloaded
7210 and use the standard table header output routine.
7212 ----------------------------------------
7213 09 June 2008. Summary of changes for version 20080609:
7215 1) ACPI CA Core Subsystem:
7217 Implemented a workaround for reversed _PRT entries. A significant number
7219 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
7220 change dynamically detects and repairs this problem. Provides
7222 with MS ACPI. BZ 6859
7224 Simplified the internal ACPI hardware interfaces to eliminate the locking
7225 flag parameter from Register Read/Write. Added a new external interface,
7226 AcpiGetRegisterUnlocked.
7228 Fixed a problem where the invocation of a GPE control method could hang.
7230 was a regression introduced in 20080514. The new method argument count
7231 validation mechanism can enter an infinite loop when a GPE method is
7232 dispatched. Problem fixed by removing the obsolete code that passed GPE
7234 information to the notify handler via the control method parameter
7237 Fixed a problem where the _SST execution status was incorrectly returned
7239 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
7241 20080514. _SST is optional and a NOT_FOUND exception should never be
7244 Fixed a problem where a deleted object could be accessed from within the
7246 parser. This was a regression introduced in version 20080123 as a fix for
7248 Unload operator. Lin Ming. BZ 10669
7250 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
7252 and eliminated the use of a negative index in a loop. Operands are now
7253 displayed in the correct order, not backwards. This also fixes a
7255 introduced in 20080514 on 64-bit systems where the elimination of
7256 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
7259 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
7261 path did not delete a locally allocated structure.
7263 Updated definitions for the DMAR and SRAT tables to synchronize with the
7264 current specifications. Includes disassembler support.
7266 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
7267 loop termination value was used. Loop terminated on iteration early,
7269 one mutex. Linn Crosetto
7271 Example Code and Data Size: These are the sizes for the OS-independent
7272 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7273 debug version of the code includes the debug output trace mechanism and
7275 much larger code and data size.
7278 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7279 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7281 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
7282 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
7284 2) iASL Compiler/Disassembler and Tools:
7286 Disassembler: Implemented support for EisaId() within _CID objects. Now
7287 disassemble integer _CID objects back to EisaId invocations, including
7288 multiple integers within _CID packages. Includes single-step support for
7291 Disassembler: Added support for DMAR and SRAT table definition changes.
7293 ----------------------------------------
7294 14 May 2008. Summary of changes for version 20080514:
7296 1) ACPI CA Core Subsystem:
7298 Fixed a problem where GPEs were enabled too early during the ACPICA
7299 initialization. This could lead to "handler not installed" errors on some
7300 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
7302 ensures that all operation regions and devices throughout the namespace
7304 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
7306 Implemented a change to the enter sleep code. Moved execution of the _GTS
7307 method to just before setting sleep enable bit. The execution was moved
7309 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
7310 immediately before the SLP_EN bit is set, as per the ACPI specification.
7313 Implemented a fix to disable unknown GPEs (2nd version). Now always
7315 the GPE, even if ACPICA thinks that that it is already disabled. It is
7316 possible that the AML or some other code has enabled the GPE unbeknownst
7320 Fixed a problem with the Field operator where zero-length fields would
7322 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
7324 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
7326 Implemented a fix for the Load operator, now load the table at the
7328 root. This reverts a change introduced in version 20071019. The table is
7330 loaded at the namespace root even though this goes against the ACPI
7331 specification. This provides compatibility with other ACPI
7333 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
7336 Fixed a problem where ACPICA would not Load() tables with unusual
7338 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
7339 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
7340 Therefore, signature validation is worthless. Apparently MS ACPI accepts
7342 signatures, ACPICA must be compatible. BZ 10454.
7344 Fixed a possible negative array index in AcpiUtValidateException. Added
7346 fields to the exception string arrays to eliminate a -1 subtraction on
7350 Updated the debug tracking macros to reduce overall code and data size.
7351 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
7352 instead of pointers to static strings. Jan Beulich and Bob Moore.
7354 Implemented argument count checking in control method invocation via
7355 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
7357 many. This applies only to extern programmatic control method execution,
7359 method-to-method calls within the AML. Lin Ming.
7361 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
7363 longer needed, especially with the removal of 16-bit support. It was
7365 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
7368 32/64-bit platforms is required.
7370 Added the C const qualifier for appropriate string constants -- mostly
7371 MODULE_NAME and printf format strings. Jan Beulich.
7373 Example Code and Data Size: These are the sizes for the OS-independent
7374 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7375 debug version of the code includes the debug output trace mechanism and
7377 much larger code and data size.
7380 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7381 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7383 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
7384 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
7386 2) iASL Compiler/Disassembler and Tools:
7388 Implemented ACPI table revision ID validation in the disassembler. Zero
7390 always invalid. For DSDTs, the ID controls the interpreter integer width.
7392 means 32-bit and this is unusual. 2 or greater is 64-bit.
7394 ----------------------------------------
7395 21 March 2008. Summary of changes for version 20080321:
7397 1) ACPI CA Core Subsystem:
7399 Implemented an additional change to the GPE support in order to suppress
7400 spurious or stray GPEs. The AcpiEvDisableGpe function will now
7402 disable incoming GPEs that are neither enabled nor disabled -- meaning
7404 the GPE is unknown to the system. This should prevent future interrupt
7406 from that GPE. BZ 6217 (Zhang Rui)
7408 Fixed a problem where NULL package elements were not returned to the
7409 AcpiEvaluateObject interface correctly. The element was simply ignored
7410 instead of returning a NULL ACPI_OBJECT package element, potentially
7412 a buffer overflow and/or confusing the caller who expected a fixed number
7414 elements. BZ 10132 (Lin Ming, Bob Moore)
7416 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
7418 Qword), Field, BankField, and IndexField operators when invoked from
7420 an executing control method. In this case, these operators created
7422 nodes that were incorrectly left marked as permanent nodes instead of
7423 temporary nodes. This could cause a problem if there is race condition
7424 between an exiting control method and a running namespace walk. (Reported
7428 Fixed a problem where the CreateField and CreateXXXField operators would
7429 incorrectly allow duplicate names (the name of the field) with no
7433 Implemented several changes for Notify handling. Added support for new
7435 values (ACPI 2.0+) and improved the Notify debug output. Notify on
7436 PowerResource objects is no longer allowed, as per the ACPI
7438 (Bob Moore, Zhang Rui)
7440 All Reference Objects returned via the AcpiEvaluateObject interface are
7442 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
7444 NULL objects - either NULL package elements or unresolved named
7447 Fixed a problem where an extraneous debug message was produced for
7449 objects (when debugging enabled). The message "Package List length larger
7450 than NumElements count" is now produced in the correct case, and is now
7452 error message rather than a debug message. Added a debug message for the
7453 opposite case, where NumElements is larger than the Package List (the
7455 will be padded out with NULL elements as per the ACPI spec.)
7457 Implemented several improvements for the output of the ASL "Debug" object
7459 clarify and keep all data for a given object on one output line.
7461 Fixed two size calculation issues with the variable-length Start
7463 resource descriptor.
7465 Example Code and Data Size: These are the sizes for the OS-independent
7466 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7467 debug version of the code includes the debug output trace mechanism and
7469 a much larger code and data size.
7472 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7473 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7475 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
7476 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
7478 2) iASL Compiler/Disassembler and Tools:
7480 Fixed a problem with the use of the Switch operator where execution of
7482 containing method by multiple concurrent threads could cause an
7483 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
7484 actual Switch opcode, it must be simulated with local named temporary
7485 variables and if/else pairs. The solution chosen was to mark any method
7487 uses Switch as Serialized, thus preventing multiple thread entries. BZ
7490 ----------------------------------------
7491 13 February 2008. Summary of changes for version 20080213:
7493 1) ACPI CA Core Subsystem:
7495 Implemented another MS compatibility design change for GPE/Notify
7497 GPEs are now cleared/enabled asynchronously to allow all pending notifies
7499 complete first. It is expected that the OSL will queue the enable request
7500 behind all pending notify requests (may require changes to the local host
7502 in AcpiOsExecute). Alexey Starikovskiy.
7504 Fixed a problem where buffer and package objects passed as arguments to a
7505 control method via the external AcpiEvaluateObject interface could cause
7507 AE_AML_INTERNAL exception depending on the order and type of operators
7508 executed by the target control method.
7510 Fixed a problem where resource descriptor size optimization could cause a
7511 problem when a _CRS resource template is passed to a _SRS method. The
7513 resource template must use the same descriptors (with the same size) as
7514 returned from _CRS. This change affects the following resource
7516 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
7519 Fixed a problem where a CopyObject to RegionField, BankField, and
7521 objects did not perform an implicit conversion as it should. These types
7523 retain their initial type permanently as per the ACPI specification.
7525 a CopyObject to all other object types should not perform an implicit
7526 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
7528 Fixed a problem with the AcpiGetDevices interface where the mechanism to
7529 match device CIDs did not examine the entire list of available CIDs, but
7530 instead aborted on the first non-matching CID. Andrew Patterson.
7532 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
7534 inadvertently changed to return a 16-bit value instead of a 32-bit value,
7535 truncating the upper dword of a 64-bit value. This macro is only used to
7536 display debug output, so no incorrect calculations were made. Also,
7537 reimplemented the macro so that a 64-bit shift is not performed by
7538 inefficient compilers.
7540 Added missing va_end statements that should correspond with each va_start
7543 Example Code and Data Size: These are the sizes for the OS-independent
7544 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7545 debug version of the code includes the debug output trace mechanism and
7547 a much larger code and data size.
7550 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7551 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7553 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
7554 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
7556 2) iASL Compiler/Disassembler and Tools:
7558 Implemented full disassembler support for the following new ACPI tables:
7559 BERT, EINJ, and ERST. Implemented partial disassembler support for the
7560 complicated HEST table. These tables support the Windows Hardware Error
7561 Architecture (WHEA).
7563 ----------------------------------------
7564 23 January 2008. Summary of changes for version 20080123:
7566 1) ACPI CA Core Subsystem:
7568 Added the 2008 copyright to all module headers and signons. This affects
7569 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7570 the tools/utilities.
7572 Fixed a problem with the SizeOf operator when used with Package and
7574 objects. These objects have deferred execution for some arguments, and
7576 execution is now completed before the SizeOf is executed. This problem
7578 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
7582 Implemented an enhancement to the interpreter "slack mode". In the
7585 an explicit return or an implicitly returned object from the last
7587 opcode, a control method will now implicitly return an integer of value 0
7589 Microsoft compatibility. (Lin Ming) BZ 392
7591 Fixed a problem with the Load operator where an exception was not
7594 the case where the table is already loaded. (Lin Ming) BZ 463
7596 Implemented support for the use of DDBHandles as an Indexed Reference, as
7598 the ACPI spec. (Lin Ming) BZ 486
7600 Implemented support for UserTerm (Method invocation) for the Unload
7602 as per the ACPI spec. (Lin Ming) BZ 580
7604 Fixed a problem with the LoadTable operator where the OemId and
7606 input strings could cause unexpected failures if they were shorter than
7608 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
7610 Implemented support for UserTerm (Method invocation) for the Unload
7612 as per the ACPI spec. (Lin Ming) BZ 580
7614 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
7616 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
7618 Example Code and Data Size: These are the sizes for the OS-independent
7619 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7620 debug version of the code includes the debug output trace mechanism and
7622 a much larger code and data size.
7625 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7626 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7628 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
7629 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
7631 2) iASL Compiler/Disassembler and Tools:
7633 Implemented support in the disassembler for checksum validation on
7635 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
7637 header dump at the start of the disassembly.
7639 Implemented additional debugging information in the namespace listing
7641 created during compilation. In addition to the namespace hierarchy, the
7643 pathname to each namespace object is displayed.
7645 Fixed a problem with the disassembler where invalid ACPI tables could
7647 faults or infinite loops.
7649 Fixed an unexpected parse error when using the optional "parameter types"
7650 list in a control method declaration. (Lin Ming) BZ 397
7652 Fixed a problem where two External declarations with the same name did
7654 cause an error (Lin Ming) BZ 509
7656 Implemented support for full TermArgs (adding Argx, Localx and method
7657 invocation) for the ParameterData parameter to the LoadTable operator.
7661 ----------------------------------------
7662 19 December 2007. Summary of changes for version 20071219:
7664 1) ACPI CA Core Subsystem:
7666 Implemented full support for deferred execution for the TermArg string
7667 arguments for DataTableRegion. This enables forward references and full
7668 operand resolution for the three string arguments. Similar to
7670 deferred argument execution.) Lin Ming. BZ 430
7672 Implemented full argument resolution support for the BankValue argument
7674 BankField. Previously, only constants were supported, now any TermArg may
7676 used. Lin Ming BZ 387, 393
7678 Fixed a problem with AcpiGetDevices where the search of a branch of the
7679 device tree could be terminated prematurely. In accordance with the ACPI
7680 specification, the search down the current branch is terminated if a
7682 is both not present and not functional (instead of just not present.)
7686 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
7688 the underlying AML code changed the GPE enable registers. Now, any
7690 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
7692 instead of simply ignored. Rui Zhang.
7694 Fixed a problem with Index Fields where the Index register was
7696 limited to a maximum of 32 bits. Now any size may be used.
7698 Fixed a couple memory leaks associated with "implicit return" objects
7700 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
7702 Example Code and Data Size: These are the sizes for the OS-independent
7703 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7704 debug version of the code includes the debug output trace mechanism and
7706 a much larger code and data size.
7709 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7710 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7712 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7713 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7715 ----------------------------------------
7716 14 November 2007. Summary of changes for version 20071114:
7718 1) ACPI CA Core Subsystem:
7720 Implemented event counters for each of the Fixed Events, the ACPI SCI
7721 (interrupt) itself, and control methods executed. Named
7722 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
7724 should be useful for debugging and statistics.
7726 Implemented a new external interface, AcpiGetStatistics, to retrieve the
7727 contents of the various event counters. Returns the current values for
7728 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
7729 AcpiMethodCount. The interface can be expanded in the future if new
7731 are added. Device drivers should use this interface rather than access
7735 Fixed a problem with the FromBCD and ToBCD operators. With some
7737 the ShortDivide function worked incorrectly, causing problems with the
7739 functions with large input values. A truncation from 64-bit to 32-bit
7740 inadvertently occurred. Internal BZ 435. Lin Ming
7742 Fixed a problem with Index references passed as method arguments.
7744 passed as arguments to control methods were dereferenced immediately
7746 control was passed to the called method). The references are now
7748 passed directly to the called method. BZ 5389. Lin Ming
7750 Fixed a problem with CopyObject used in conjunction with the Index
7752 The reference was incorrectly dereferenced before the copy. The reference
7754 now correctly copied. BZ 5391. Lin Ming
7756 Fixed a problem with Control Method references within Package objects.
7758 references are now correctly generated. This completes the package
7759 construction overhaul that began in version 20071019.
7761 Example Code and Data Size: These are the sizes for the OS-independent
7762 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7763 debug version of the code includes the debug output trace mechanism and
7765 a much larger code and data size.
7768 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7769 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7771 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7772 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7775 2) iASL Compiler/Disassembler and Tools:
7777 The AcpiExec utility now installs handlers for all of the predefined
7778 Operation Region types. New types supported are: PCI_Config, CMOS, and
7781 Fixed a problem with the 64-bit version of AcpiExec where the extended
7783 bit) address fields for the DSDT and FACS within the FADT were not being
7784 used, causing truncation of the upper 32-bits of these addresses. Lin
7788 ----------------------------------------
7789 19 October 2007. Summary of changes for version 20071019:
7791 1) ACPI CA Core Subsystem:
7793 Fixed a problem with the Alias operator when the target of the alias is a
7794 named ASL operator that opens a new scope -- Scope, Device,
7796 Processor, and ThermalZone. In these cases, any children of the original
7797 operator could not be accessed via the alias, potentially causing
7799 AE_NOT_FOUND exceptions. (BZ 9067)
7801 Fixed a problem with the Package operator where all named references were
7802 created as object references and left otherwise unresolved. According to
7804 ACPI specification, a Package can only contain Data Objects or references
7806 control methods. The implication is that named references to Data Objects
7807 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
7808 immediately upon package creation. This is the approach taken with this
7809 change. References to all other named objects (Methods, Devices, Scopes,
7810 etc.) are all now properly created as reference objects. (BZ 5328)
7812 Reverted a change to Notify handling that was introduced in version
7813 20070508. This version changed the Notify handling from asynchronous to
7814 fully synchronous (Device driver Notify handling with respect to the
7816 ASL operator). It was found that this change caused more problems than it
7817 solved and was removed by most users.
7819 Fixed a problem with the Increment and Decrement operators where the type
7821 the target object could be unexpectedly and incorrectly changed. (BZ 353)
7824 Fixed a problem with the Load and LoadTable operators where the table
7825 location within the namespace was ignored. Instead, the table was always
7826 loaded into the root or current scope. Lin Ming.
7828 Fixed a problem with the Load operator when loading a table from a buffer
7829 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
7831 Fixed a problem with the Debug object where a store of a DdbHandle
7833 object to the Debug object could cause a fault.
7835 Added a table checksum verification for the Load operator, in the case
7837 the load is from a buffer. (BZ 578).
7839 Implemented additional parameter validation for the LoadTable operator.
7841 length of the input strings SignatureString, OemIdString, and OemTableId
7843 now checked for maximum lengths. (BZ 582) Lin Ming.
7845 Example Code and Data Size: These are the sizes for the OS-independent
7846 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7847 debug version of the code includes the debug output trace mechanism and
7849 a much larger code and data size.
7852 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7853 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7855 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7856 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7859 2) iASL Compiler/Disassembler:
7861 Fixed a problem where if a single file was specified and the file did not
7862 exist, no error message was emitted. (Introduced with wildcard support in
7865 ----------------------------------------
7866 19 September 2007. Summary of changes for version 20070919:
7868 1) ACPI CA Core Subsystem:
7870 Designed and implemented new external interfaces to install and remove
7871 handlers for ACPI table-related events. Current events that are defined
7873 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
7874 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
7875 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
7877 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
7878 (acpi_serialized option on Linux) could cause some systems to hang during
7879 initialization. (Bob Moore) BZ 8171
7881 Fixed a problem where objects of certain types (Device, ThermalZone,
7882 Processor, PowerResource) can be not found if they are declared and
7883 referenced from within the same control method (Lin Ming) BZ 341
7885 Example Code and Data Size: These are the sizes for the OS-independent
7886 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7887 debug version of the code includes the debug output trace mechanism and
7889 a much larger code and data size.
7892 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7893 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7895 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7896 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7899 2) iASL Compiler/Disassembler:
7901 Implemented support to allow multiple files to be compiled/disassembled
7904 single invocation. This includes command line wildcard support for both
7906 Windows and Unix versions of the compiler. This feature simplifies the
7907 disassembly and compilation of multiple ACPI tables in a single
7910 ----------------------------------------
7911 08 May 2007. Summary of changes for version 20070508:
7913 1) ACPI CA Core Subsystem:
7915 Implemented a Microsoft compatibility design change for the handling of
7917 Notify AML operator. Previously, notify handlers were dispatched and
7918 executed completely asynchronously in a deferred thread. The new design
7919 still executes the notify handlers in a different thread, but the
7921 thread that executed the Notify() now waits at a synchronization point
7923 the notify handler to complete. Some machines depend on a synchronous
7925 operator in order to operate correctly.
7927 Implemented support to allow Package objects to be passed as method
7928 arguments to the external AcpiEvaluateObject interface. Previously, this
7929 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
7930 implemented since there were no reserved control methods that required it
7933 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
7935 contained invalid non-zero values in reserved fields could cause later
7936 failures because these fields have meaning in later revisions of the
7938 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
7940 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
7942 Fixed a problem where the Global Lock handle was not properly updated if
7944 thread that acquired the Global Lock via executing AML code then
7946 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
7950 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
7951 could be corrupted if the interrupt being removed was at the head of the
7952 list. Reported by Linn Crosetto.
7954 Example Code and Data Size: These are the sizes for the OS-independent
7955 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7956 debug version of the code includes the debug output trace mechanism and
7958 a much larger code and data size.
7961 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7962 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7964 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7965 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7967 ----------------------------------------
7968 20 March 2007. Summary of changes for version 20070320:
7970 1) ACPI CA Core Subsystem:
7972 Implemented a change to the order of interpretation and evaluation of AML
7973 operand objects within the AML interpreter. The interpreter now evaluates
7974 operands in the order that they appear in the AML stream (and the
7975 corresponding ASL code), instead of in the reverse order (after the
7977 operand list has been parsed). The previous behavior caused several
7979 incompatibilities with the Microsoft AML interpreter as well as being
7980 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
7982 Implemented a change to the ACPI Global Lock support. All interfaces to
7984 global lock now allow the same thread to acquire the lock multiple times.
7985 This affects the AcpiAcquireGlobalLock external interface to the global
7987 as well as the internal use of the global lock to support AML fields -- a
7988 control method that is holding the global lock can now simultaneously
7990 AML fields that require global lock protection. Previously, in both
7992 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
7994 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
7995 Controller. There is no change to the behavior of the AML Acquire
7997 as this can already be used to acquire a mutex multiple times by the same
7998 thread. BZ 8066. With assistance from Alexey Starikovskiy.
8000 Fixed a problem where invalid objects could be referenced in the AML
8001 Interpreter after error conditions. During operand evaluation, ensure
8003 the internal "Return Object" field is cleared on error and only valid
8004 pointers are stored there. Caused occasional access to deleted objects
8006 resulted in "large reference count" warning messages. Valery Podrezov.
8008 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
8010 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
8013 Fixed an internal problem with the handling of result objects on the
8014 interpreter result stack. BZ 7872. Valery Podrezov.
8016 Removed obsolete code that handled the case where AML_NAME_OP is the
8018 of a reference (Reference.Opcode). This code was no longer necessary. BZ
8019 7874. Valery Podrezov.
8021 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
8024 remnant from the previously discontinued 16-bit support.
8026 Example Code and Data Size: These are the sizes for the OS-independent
8027 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8028 debug version of the code includes the debug output trace mechanism and
8030 a much larger code and data size.
8033 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8034 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8036 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8037 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
8039 ----------------------------------------
8040 26 January 2007. Summary of changes for version 20070126:
8042 1) ACPI CA Core Subsystem:
8044 Added the 2007 copyright to all module headers and signons. This affects
8045 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8048 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
8049 during a table load. A bad pointer was passed in the case where the DSDT
8051 overridden, causing a fault in this case.
8053 Example Code and Data Size: These are the sizes for the OS-independent
8054 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8055 debug version of the code includes the debug output trace mechanism and
8057 a much larger code and data size.
8060 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8061 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8063 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8064 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8066 ----------------------------------------
8067 15 December 2006. Summary of changes for version 20061215:
8069 1) ACPI CA Core Subsystem:
8071 Support for 16-bit ACPICA has been completely removed since it is no
8073 necessary and it clutters the code. All 16-bit macros, types, and
8074 conditional compiles have been removed, cleaning up and simplifying the
8076 across the entire subsystem. DOS support is no longer needed since the
8077 bootable Linux firmware kit is now available.
8079 The handler for the Global Lock is now removed during AcpiTerminate to
8080 enable a clean subsystem restart, via the implementation of the
8081 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
8084 Implemented enhancements to the multithreading support within the
8086 to enable improved multithreading debugging and evaluation of the
8090 Debugger: Enhanced the Statistics/Memory command to emit the total
8092 memory used during the execution, as well as the maximum memory consumed
8094 each of the various object types. (Valery Podrezov)
8096 Example Code and Data Size: These are the sizes for the OS-independent
8097 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8098 debug version of the code includes the debug output trace mechanism and
8100 a much larger code and data size.
8103 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8104 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8106 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
8107 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
8110 2) iASL Compiler/Disassembler and Tools:
8112 AcpiExec: Implemented a new option (-m) to display full memory use
8113 statistics upon subsystem/program termination. (Valery Podrezov)
8115 ----------------------------------------
8116 09 November 2006. Summary of changes for version 20061109:
8118 1) ACPI CA Core Subsystem:
8120 Optimized the Load ASL operator in the case where the source operand is
8122 operation region. Simply map the operation region memory, instead of
8123 performing a bytewise read. (Region must be of type SystemMemory, see
8126 Fixed the Load ASL operator for the case where the source operand is a
8127 region field. A buffer object is also allowed as the source operand. BZ
8130 Fixed a problem where the Load ASL operator allowed the source operand to
8132 an operation region of any type. It is now restricted to regions of type
8133 SystemMemory, as per the ACPI specification. BZ 481
8135 Additional cleanup and optimizations for the new Table Manager code.
8137 AcpiEnable will now fail if all of the required ACPI tables are not
8139 (FADT, FACS, DSDT). BZ 477
8141 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
8143 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
8144 manually optimized to be aligned and will not work if it is byte-packed.
8146 Example Code and Data Size: These are the sizes for the OS-independent
8147 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8148 debug version of the code includes the debug output trace mechanism and
8150 a much larger code and data size.
8153 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8154 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8156 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
8157 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
8160 2) iASL Compiler/Disassembler and Tools:
8162 Fixed a problem where the presence of the _OSI predefined control method
8163 within complex expressions could cause an internal compiler error.
8165 AcpiExec: Implemented full region support for multiple address spaces.
8166 SpaceId is now part of the REGION object. BZ 429
8168 ----------------------------------------
8169 11 October 2006. Summary of changes for version 20061011:
8171 1) ACPI CA Core Subsystem:
8173 Completed an AML interpreter performance enhancement for control method
8174 execution. Previously a 2-pass parse/execution, control methods are now
8175 completely parsed and executed in a single pass. This improves overall
8176 interpreter performance by ~25%, reduces code size, and reduces CPU stack
8177 use. (Valery Podrezov + interpreter changes in version 20051202 that
8178 eliminated namespace loading during the pass one parse.)
8180 Implemented _CID support for PCI Root Bridge detection. If the _HID does
8182 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
8184 obtained and also checked for an ID match.
8186 Implemented additional support for the PCI _ADR execution: upsearch until
8188 device scope is found before executing _ADR. This allows PCI_Config
8189 operation regions to be declared locally within control methods
8193 Fixed a problem with a possible race condition between threads executing
8194 AcpiWalkNamespace and the AML interpreter. This condition was removed by
8195 modifying AcpiWalkNamespace to (by default) ignore all temporary
8197 entries created during any concurrent control method execution. An
8198 additional namespace race condition is known to exist between
8199 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
8202 Restructured the AML ParseLoop function, breaking it into several
8203 subfunctions in order to reduce CPU stack use and improve
8207 AcpiGetHandle: Fix for parameter validation to detect invalid
8209 of prefix handle and pathname. BZ 478
8211 Example Code and Data Size: These are the sizes for the OS-independent
8212 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8213 debug version of the code includes the debug output trace mechanism and
8215 a much larger code and data size.
8218 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8219 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8221 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
8222 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
8224 2) iASL Compiler/Disassembler and Tools:
8226 Ported the -g option (get local ACPI tables) to the new ACPICA Table
8228 to restore original behavior.
8230 ----------------------------------------
8231 27 September 2006. Summary of changes for version 20060927:
8233 1) ACPI CA Core Subsystem:
8235 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
8236 These functions now use a spinlock for mutual exclusion and the interrupt
8237 level indication flag is not needed.
8239 Fixed a problem with the Global Lock where the lock could appear to be
8240 obtained before it is actually obtained. The global lock semaphore was
8241 inadvertently created with one unit instead of zero units. (BZ 464)
8245 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
8247 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
8249 Example Code and Data Size: These are the sizes for the OS-independent
8250 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8251 debug version of the code includes the debug output trace mechanism and
8253 a much larger code and data size.
8256 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8257 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8259 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8260 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
8263 2) iASL Compiler/Disassembler and Tools:
8265 Fixed a compilation problem with the pre-defined Resource Descriptor
8267 names where an "object does not exist" error could be incorrectly
8269 if the parent ResourceTemplate pathname places the template within a
8270 different namespace scope than the current scope. (BZ 7212)
8272 Fixed a problem where the compiler could hang after syntax errors
8274 in an ElseIf construct. (BZ 453)
8276 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
8277 operator. An incorrect output filename was produced when this parameter
8279 a null string (""). Now, the original input filename is used as the AML
8280 output filename, with an ".aml" extension.
8282 Implemented a generic batch command mode for the AcpiExec utility
8284 any AML debugger command) (Valery Podrezov).
8286 ----------------------------------------
8287 12 September 2006. Summary of changes for version 20060912:
8289 1) ACPI CA Core Subsystem:
8291 Enhanced the implementation of the "serialized mode" of the interpreter
8292 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
8293 specified, instead of creating a serialization semaphore per control
8295 the interpreter lock is simply no longer released before a blocking
8296 operation during control method execution. This effectively makes the AML
8297 Interpreter single-threaded. The overhead of a semaphore per-method is
8300 Fixed a regression where an error was no longer emitted if a control
8302 attempts to create 2 objects of the same name. This once again returns
8303 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
8305 will dynamically serialize the control method to possible prevent future
8308 Integrated a fix for a problem with PCI Express HID detection in the PCI
8309 Config Space setup procedure. (BZ 7145)
8311 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
8312 AcpiHwInitialize function - the FADT registers are now validated when the
8315 Added two new warnings during FADT verification - 1) if the FADT is
8317 than the largest known FADT version, and 2) if there is a mismatch
8320 32-bit block address and the 64-bit X counterpart (when both are non-
8323 Example Code and Data Size: These are the sizes for the OS-independent
8324 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8325 debug version of the code includes the debug output trace mechanism and
8327 a much larger code and data size.
8330 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8331 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8333 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
8334 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
8337 2) iASL Compiler/Disassembler and Tools:
8339 Fixed a problem with the implementation of the Switch() operator where
8341 temporary variable was declared too close to the actual Switch, instead
8343 at method level. This could cause a problem if the Switch() operator is
8344 within a while loop, causing an error on the second iteration. (BZ 460)
8346 Disassembler - fix for error emitted for unknown type for target of scope
8347 operator. Now, ignore it and continue.
8349 Disassembly of an FADT now verifies the input FADT and reports any errors
8350 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
8352 Disassembly of raw data buffers with byte initialization data now
8354 each output line with the current buffer offset.
8356 Disassembly of ASF! table now includes all variable-length data fields at
8357 the end of some of the subtables.
8359 The disassembler now emits a comment if a buffer appears to be a
8360 ResourceTemplate, but cannot be disassembled as such because the EndTag
8362 not appear at the very end of the buffer.
8364 AcpiExec - Added the "-t" command line option to enable the serialized
8366 of the AML interpreter.
8368 ----------------------------------------
8369 31 August 2006. Summary of changes for version 20060831:
8371 1) ACPI CA Core Subsystem:
8373 Miscellaneous fixes for the Table Manager:
8374 - Correctly initialize internal common FADT for all 64-bit "X" fields
8375 - Fixed a couple table mapping issues during table load
8376 - Fixed a couple alignment issues for IA64
8377 - Initialize input array to zero in AcpiInitializeTables
8378 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
8381 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
8383 immediately disabled to prevent the waking GPE from firing again and to
8384 prevent other wake GPEs from interrupting the wake process.
8386 Added the AcpiGpeCount global that tracks the number of processed GPEs,
8388 be used for debugging systems with a large number of ACPI interrupts.
8390 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
8391 both the ACPICA headers and the disassembler.
8393 Example Code and Data Size: These are the sizes for the OS-independent
8394 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8395 debug version of the code includes the debug output trace mechanism and
8397 a much larger code and data size.
8400 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8401 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8403 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
8404 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
8407 2) iASL Compiler/Disassembler and Tools:
8409 Disassembler support for the DMAR ACPI table.
8411 ----------------------------------------
8412 23 August 2006. Summary of changes for version 20060823:
8414 1) ACPI CA Core Subsystem:
8416 The Table Manager component has been completely redesigned and
8417 reimplemented. The new design is much simpler, and reduces the overall
8419 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
8421 now possible to obtain the ACPI tables very early during kernel
8422 initialization, even before dynamic memory management is initialized.
8423 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
8425 Obsolete ACPICA interfaces:
8427 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
8430 - AcpiLoadTable: Not needed.
8431 - AcpiUnloadTable: Not needed.
8433 New ACPICA interfaces:
8435 - AcpiInitializeTables: Must be called before the table manager can be
8437 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
8438 allocated memory after it becomes available.
8439 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
8443 Other ACPICA changes:
8445 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
8447 AcpiOsUnmapMemory to free this mapping.
8448 - AcpiGetTable returns the actual mapped table. The mapping is managed
8449 internally and must not be deleted by the caller. Use of this interface
8450 causes no additional dynamic memory allocation.
8451 - AcpiFindRootPointer: Support for physical addressing has been
8453 it appeared to be unused.
8454 - The interface to AcpiOsMapMemory has changed to be consistent with the
8455 other allocation interfaces.
8456 - The interface to AcpiOsGetRootPointer has changed to eliminate
8459 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
8461 bit platforms. Was previously 64 bits on all platforms.
8462 - The interface to the ACPI Global Lock acquire/release macros have
8464 slightly since ACPICA no longer keeps a local copy of the FACS with a
8465 constructed pointer to the actual global lock.
8467 Porting to the new table manager:
8469 - AcpiInitializeTables: Must be called once, and can be called anytime
8470 during the OS initialization process. It allows the host to specify an
8472 of memory to be used to store the internal version of the RSDT/XSDT (root
8473 table). This allows the host to access ACPI tables before memory
8475 is initialized and running.
8476 - AcpiReallocateRootTable: Can be called after memory management is
8478 to copy the root table to a dynamically allocated array, freeing up the
8479 scratch memory specified in the call to AcpiInitializeTables.
8480 - AcpiSubsystemInitialize: This existing interface is independent of the
8481 Table Manager, and does not have to be called before the Table Manager
8483 be used, it only must be called before the rest of ACPICA can be used.
8484 - ACPI Tables: Some changes have been made to the names and structure of
8486 actbl.h and actbl1.h header files and may require changes to existing
8488 For example, bitfields have been completely removed because of their lack
8490 portability across C compilers.
8491 - Update interfaces to the Global Lock acquire/release macros if local
8492 versions are used. (see acwin.h)
8494 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
8498 Example Code and Data Size: These are the sizes for the OS-independent
8499 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8500 debug version of the code includes the debug output trace mechanism and
8502 a much larger code and data size.
8505 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8506 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8508 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
8509 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
8512 2) iASL Compiler/Disassembler and Tools:
8514 No changes for this release.
8516 ----------------------------------------
8517 21 July 2006. Summary of changes for version 20060721:
8519 1) ACPI CA Core Subsystem:
8521 The full source code for the ASL test suite used to validate the iASL
8522 compiler and the ACPICA core subsystem is being released with the ACPICA
8523 source for the first time. The source is contained in a separate package
8525 consists of over 1100 files that exercise all ASL/AML operators. The
8527 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
8531 Completed a new design and implementation for support of the ACPI Global
8532 Lock. On the OS side, the global lock is now treated as a standard AML
8533 mutex. Previously, multiple OS threads could "acquire" the global lock
8534 simultaneously. However, this could cause the BIOS to be starved out of
8536 lock - especially in cases such as the Embedded Controller driver where
8537 there is a tight coupling between the OS and the BIOS.
8539 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
8540 The Global Lock interrupt handler no longer queues the execution of a
8541 separate thread to signal the global lock semaphore. Instead, the
8543 is signaled directly from the interrupt handler.
8545 Implemented support within the AML interpreter for package objects that
8546 contain a larger AML length (package list length) than the package
8548 count. In this case, the length of the package is truncated to match the
8549 package element count. Some BIOS code apparently modifies the package
8551 on the fly, and this change supports this behavior. Provides
8553 with the MS AML interpreter. (With assistance from Fiodor Suietov)
8555 Implemented a temporary fix for the BankValue parameter of a Bank Field
8557 support all constant values, now including the Zero and One opcodes.
8558 Evaluation of this parameter must eventually be converted to a full
8560 evaluation. A not-implemented error is now returned (temporarily) for
8562 constant values for this parameter.
8564 Fixed problem reports (Fiodor Suietov) integrated:
8565 - Fix for premature object deletion after CopyObject on Operation Region
8569 Example Code and Data Size: These are the sizes for the OS-independent
8570 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8571 debug version of the code includes the debug output trace mechanism and
8573 a much larger code and data size.
8576 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
8577 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
8579 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8580 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8583 2) iASL Compiler/Disassembler and Tools:
8585 No changes for this release.
8587 ----------------------------------------
8588 07 July 2006. Summary of changes for version 20060707:
8590 1) ACPI CA Core Subsystem:
8592 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
8593 that do not allow the initialization of address pointers within packed
8594 structures - even though the hardware itself may support misaligned
8595 transfers. Some of the debug data structures are packed by default to
8598 Added an error message for the case where AcpiOsGetThreadId() returns
8600 A non-zero value is required by the core ACPICA code to ensure the proper
8601 operation of AML mutexes and recursive control methods.
8603 The DSDT is now the only ACPI table that determines whether the AML
8604 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
8606 the hooks for per-table 32/64 switching have been removed from the code.
8608 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
8610 Fixed a possible leak of an OwnerID in the error path of
8611 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
8612 deletion to a single place in AcpiTbUninstallTable to correct possible
8614 when using the AcpiTbDeleteTablesByType interface (with assistance from
8617 Fixed a problem with Serialized control methods where the semaphore
8618 associated with the method could be over-signaled after multiple method
8621 Fixed two issues with the locking of the internal namespace data
8623 Both the Unload() operator and AcpiUnloadTable interface now lock the
8624 namespace during the namespace deletion associated with the table unload
8625 (with assistance from Linn Crosetto.)
8627 Fixed problem reports (Valery Podrezov) integrated:
8628 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
8630 Fixed problem reports (Fiodor Suietov) integrated:
8631 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
8632 - On Address Space handler deletion, needless deactivation call (BZ 374)
8633 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
8635 - Possible memory leak, Notify sub-objects of Processor, Power,
8638 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
8639 - Minimum Length of RSDT should be validated (BZ 379)
8640 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
8642 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
8646 Example Code and Data Size: These are the sizes for the OS-independent
8647 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8648 debug version of the code includes the debug output trace mechanism and
8650 a much larger code and data size.
8653 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
8654 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
8656 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
8657 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
8660 2) iASL Compiler/Disassembler and Tools:
8662 Fixed problem reports:
8663 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
8666 ----------------------------------------
8667 23 June 2006. Summary of changes for version 20060623:
8669 1) ACPI CA Core Subsystem:
8671 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
8672 allows the type to be customized to the host OS for improved efficiency
8673 (since a spinlock is usually a very small object.)
8675 Implemented support for "ignored" bits in the ACPI registers. According
8677 the ACPI specification, these bits should be preserved when writing the
8678 registers via a read/modify/write cycle. There are 3 bits preserved in
8680 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
8682 Implemented the initial deployment of new OSL mutex interfaces. Since
8684 host operating systems have separate mutex and semaphore objects, this
8685 feature was requested. The base code now uses mutexes (and the new mutex
8686 interfaces) wherever a binary semaphore was used previously. However, for
8687 the current release, the mutex interfaces are defined as macros to map
8689 to the existing semaphore interfaces. Therefore, no OSL changes are
8691 at this time. (See acpiosxf.h)
8693 Fixed several problems with the support for the control method SyncLevel
8694 parameter. The SyncLevel now works according to the ACPI specification
8696 in concert with the Mutex SyncLevel parameter, since the current
8698 is a property of the executing thread. Mutual exclusion for control
8700 is now implemented with a mutex instead of a semaphore.
8702 Fixed three instances of the use of the C shift operator in the bitfield
8703 support code (exfldio.c) to avoid the use of a shift value larger than
8705 target data width. The behavior of C compilers is undefined in this case
8707 can cause unpredictable results, and therefore the case must be detected
8709 avoided. (Fiodor Suietov)
8711 Added an info message whenever an SSDT or OEM table is loaded dynamically
8712 via the Load() or LoadTable() ASL operators. This should improve
8714 capability since it will show exactly what tables have been loaded
8716 the tables present in the RSDT/XSDT.)
8718 Example Code and Data Size: These are the sizes for the OS-independent
8719 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8720 debug version of the code includes the debug output trace mechanism and
8722 a much larger code and data size.
8725 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8726 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8728 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
8729 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
8732 2) iASL Compiler/Disassembler and Tools:
8734 No changes for this release.
8736 ----------------------------------------
8737 08 June 2006. Summary of changes for version 20060608:
8739 1) ACPI CA Core Subsystem:
8741 Converted the locking mutex used for the ACPI hardware to a spinlock.
8743 change should eliminate all problems caused by attempting to acquire a
8744 semaphore at interrupt level, and it means that all ACPICA external
8745 interfaces that directly access the ACPI hardware can be safely called
8747 interrupt level. OSL code that implements the semaphore interfaces should
8749 able to eliminate any workarounds for being called at interrupt level.
8751 Fixed a regression introduced in 20060526 where the ACPI device
8752 initialization could be prematurely aborted with an AE_NOT_FOUND if a
8754 did not have an optional _INI method.
8756 Fixed an IndexField issue where a write to the Data Register should be
8757 limited in size to the AccessSize (width) of the IndexField itself. (BZ
8761 Fixed problem reports (Valery Podrezov) integrated:
8762 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
8764 Fixed problem reports (Fiodor Suietov) integrated:
8765 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
8767 Removed four global mutexes that were obsolete and were no longer being
8770 Example Code and Data Size: These are the sizes for the OS-independent
8771 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8772 debug version of the code includes the debug output trace mechanism and
8774 a much larger code and data size.
8777 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8778 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8780 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8781 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8784 2) iASL Compiler/Disassembler and Tools:
8786 Fixed a fault when using -g option (get tables from registry) on Windows
8789 Fixed problem reports integrated:
8790 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
8791 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
8793 - Global table revision override (-r) is ignored (BZ 413)
8795 ----------------------------------------
8796 26 May 2006. Summary of changes for version 20060526:
8798 1) ACPI CA Core Subsystem:
8800 Restructured, flattened, and simplified the internal interfaces for
8801 namespace object evaluation - resulting in smaller code, less CPU stack
8803 and fewer interfaces. (With assistance from Mikhail Kouzmich)
8805 Fixed a problem with the CopyObject operator where the first parameter
8807 not typed correctly for the parser, interpreter, compiler, and
8809 Caused various errors and unexpected behavior.
8811 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
8812 produced incorrect results with some C compilers. Since the behavior of C
8813 compilers when the shift value is larger than the datatype width is
8814 apparently not well defined, the interpreter now detects this condition
8816 simply returns zero as expected in all such cases. (BZ 395)
8818 Fixed problem reports (Valery Podrezov) integrated:
8819 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
8820 - Allow interpreter to handle nested method declarations (BZ 5361)
8822 Fixed problem reports (Fiodor Suietov) integrated:
8823 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
8825 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
8827 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
8828 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
8829 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
8830 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
8831 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
8832 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
8833 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
8835 - Status of the Global Initialization Handler call not used (BZ 366)
8836 - Incorrect object parameter to Global Initialization Handler (BZ 367)
8838 Example Code and Data Size: These are the sizes for the OS-independent
8839 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8840 debug version of the code includes the debug output trace mechanism and
8842 a much larger code and data size.
8845 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8846 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8848 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8849 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8852 2) iASL Compiler/Disassembler and Tools:
8854 Modified the parser to allow the names IO, DMA, and IRQ to be used as
8855 namespace identifiers with no collision with existing resource descriptor
8856 macro names. This provides compatibility with other ASL compilers and is
8857 most useful for disassembly/recompilation of existing tables without
8859 errors. (With assistance from Thomas Renninger)
8861 Disassembler: fixed an incorrect disassembly problem with the
8862 DataTableRegion and CopyObject operators. Fixed a possible fault during
8863 disassembly of some Alias operators.
8865 ----------------------------------------
8866 12 May 2006. Summary of changes for version 20060512:
8868 1) ACPI CA Core Subsystem:
8870 Replaced the AcpiOsQueueForExecution interface with a new interface named
8871 AcpiOsExecute. The major difference is that the new interface does not
8873 a Priority parameter, this appeared to be useless and has been replaced
8876 Type parameter. The Type tells the host what type of execution is being
8877 requested, such as global lock handler, notify handler, GPE handler, etc.
8878 This allows the host to queue and execute the request as appropriate for
8880 request type, possibly using different work queues and different
8882 for the various request types. This enables fixes for multithreading
8883 deadlock problems such as BZ #5534, and will require changes to all
8885 OS interface layers. (Alexey Starikovskiy and Bob Moore)
8887 Fixed a possible memory leak associated with the support for the so-
8889 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
8892 Fixed a problem with the Load() operator where a table load from an
8893 operation region could overwrite an internal table buffer by up to 7
8895 and cause alignment faults on IPF systems. (With assistance from Luming
8898 Example Code and Data Size: These are the sizes for the OS-independent
8899 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8900 debug version of the code includes the debug output trace mechanism and
8902 a much larger code and data size.
8905 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8906 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8908 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8909 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8913 2) iASL Compiler/Disassembler and Tools:
8915 Disassembler: Implemented support to cross reference the internal
8917 and automatically generate ASL External() statements for symbols not
8919 within the current table being disassembled. This will simplify the
8920 disassembly and recompilation of interdependent tables such as SSDTs
8922 these statements will no longer have to be added manually.
8924 Disassembler: Implemented experimental support to automatically detect
8925 invocations of external control methods and generate appropriate
8927 statements. This is problematic because the AML cannot be correctly
8929 until the number of arguments for each control method is known.
8931 standalone method invocations and invocations as the source operand of a
8932 Store() statement are supported.
8934 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
8935 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
8936 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
8937 more readable and likely closer to the original ASL source.
8939 ----------------------------------------
8940 21 April 2006. Summary of changes for version 20060421:
8942 1) ACPI CA Core Subsystem:
8944 Removed a device initialization optimization introduced in 20051216 where
8945 the _STA method was not run unless an _INI was also present for the same
8946 device. This optimization could cause problems because it could allow
8948 methods to be run within a not-present device subtree. (If a not-present
8949 device had no _INI, _STA would not be run, the not-present status would
8951 be discovered, and the children of the device would be incorrectly
8954 Implemented a new _STA optimization where namespace subtrees that do not
8955 contain _INI are identified and ignored during device initialization.
8956 Selectively running _STA can significantly improve boot time on large
8957 machines (with assistance from Len Brown.)
8959 Implemented support for the device initialization case where the returned
8960 _STA flags indicate a device not-present but functioning. In this case,
8962 is not run, but the device children are examined for presence, as per the
8965 Implemented an additional change to the IndexField support in order to
8966 conform to MS behavior. The value written to the Index Register is not
8967 simply a byte offset, it is a byte offset in units of the access width of
8968 the parent Index Field. (Fiodor Suietov)
8970 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
8971 interface is called during the creation of all AML operation regions, and
8972 allows the host OS to exert control over what addresses it will allow the
8973 AML code to access. Operation Regions whose addresses are disallowed will
8974 cause a runtime exception when they are actually accessed (will not
8976 or abort table loading.) See oswinxf or osunixxf for an example
8979 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
8980 interface allows the host OS to match the various "optional"
8981 interface/behavior strings for the _OSI predefined control method as
8982 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
8983 for an example implementation.
8985 Restructured and corrected various problems in the exception handling
8987 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
8988 (with assistance from Takayoshi Kochi.)
8990 Modified the Linux source converter to ignore quoted string literals
8992 converting identifiers from mixed to lower case. This will correct
8994 with the disassembler and other areas where such strings must not be
8997 The ACPI_FUNCTION_* macros no longer require quotes around the function
8998 name. This allows the Linux source converter to convert the names, now
9000 the converter ignores quoted strings.
9002 Example Code and Data Size: These are the sizes for the OS-independent
9003 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9004 debug version of the code includes the debug output trace mechanism and
9006 a much larger code and data size.
9010 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9011 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9013 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9014 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9017 2) iASL Compiler/Disassembler and Tools:
9019 Implemented 3 new warnings for iASL, and implemented multiple warning
9023 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
9025 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
9026 check for the possible timeout, a warning is issued.
9028 2) Useless operators: If an ASL operator does not specify an optional
9030 operand and it also does not use the function return value from the
9031 operator, a warning is issued since the operator effectively does
9034 3) Unreferenced objects: If a namespace object is created, but never
9035 referenced, a warning is issued. This is a warning level 2 since there
9037 cases where this is ok, such as when a secondary table is loaded that
9039 the unreferenced objects. Even so, care is taken to only flag objects
9041 don't look like they will ever be used. For example, the reserved methods
9042 (starting with an underscore) are usually not referenced because it is
9043 expected that the OS will invoke them.
9045 ----------------------------------------
9046 31 March 2006. Summary of changes for version 20060331:
9048 1) ACPI CA Core Subsystem:
9050 Implemented header file support for the following additional ACPI tables:
9051 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
9053 all current and known ACPI tables are now defined in the ACPICA headers
9055 are available for use by device drivers and other software.
9057 Implemented support to allow tables that contain ACPI names with invalid
9058 characters to be loaded. Previously, this would cause the table load to
9059 fail, but since there are several known cases of such tables on existing
9060 machines, this change was made to enable ACPI support for them. Also,
9062 matches the behavior of the Microsoft ACPI implementation.
9064 Fixed a couple regressions introduced during the memory optimization in
9066 20060317 release. The namespace node definition required additional
9067 reorganization and an internal datatype that had been changed to 8-bit
9069 restored to 32-bit. (Valery Podrezov)
9071 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
9072 could be passed through to AcpiOsReleaseObject which is unexpected. Such
9073 null pointers are now trapped and ignored, matching the behavior of the
9074 previous implementation before the deployment of AcpiOsReleaseObject.
9075 (Valery Podrezov, Fiodor Suietov)
9077 Fixed a memory mapping leak during the deletion of a SystemMemory
9079 region where a cached memory mapping was not deleted. This became a
9080 noticeable problem for operation regions that are defined within
9082 used control methods. (Dana Meyers)
9084 Reorganized the ACPI table header files into two main files: one for the
9085 ACPI tables consumed by the ACPICA core, and another for the
9087 ACPI tables that are consumed by the drivers and other software. The
9089 FADT definitions were merged into one common section and three different
9090 tables (ACPI 1.0, 1.0+, and 2.0)
9092 Example Code and Data Size: These are the sizes for the OS-independent
9093 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9094 debug version of the code includes the debug output trace mechanism and
9096 a much larger code and data size.
9099 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9100 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9102 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
9103 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
9106 2) iASL Compiler/Disassembler and Tools:
9108 Disassembler: Implemented support to decode and format all non-AML ACPI
9109 tables (tables other than DSDTs and SSDTs.) This includes the new tables
9110 added to the ACPICA headers, therefore all current and known ACPI tables
9114 Disassembler: The change to allow ACPI names with invalid characters also
9115 enables the disassembly of such tables. Invalid characters within names
9117 changed to '*' to make the name printable; the iASL compiler will still
9118 generate an error for such names, however, since this is an invalid ACPI
9121 Implemented an option for AcpiXtract (-a) to extract all tables found in
9123 input file. The default invocation extracts only the DSDTs and SSDTs.
9125 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
9126 makefile for the AcpiXtract utility.
9128 ----------------------------------------
9129 17 March 2006. Summary of changes for version 20060317:
9131 1) ACPI CA Core Subsystem:
9133 Implemented the use of a cache object for all internal namespace nodes.
9134 Since there are about 1000 static nodes in a typical system, this will
9135 decrease memory use for cache implementations that minimize per-
9137 overhead (such as a slab allocator.)
9139 Removed the reference count mechanism for internal namespace nodes, since
9141 was deemed unnecessary. This reduces the size of each namespace node by
9142 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
9144 and 32 bytes for the 64-bit case.
9146 Optimized several internal data structures to reduce object size on 64-
9148 platforms by packing data within the 64-bit alignment. This includes the
9149 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
9150 instances corresponding to the namespace objects.
9152 Added two new strings for the predefined _OSI method: "Windows 2001.1
9156 Split the allocation tracking mechanism out to a separate file, from
9157 utalloc.c to uttrack.c. This mechanism appears to be only useful for
9158 application-level code. Kernels may wish to not include uttrack.c in
9161 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
9163 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
9166 Code and Data Size: These are the sizes for the acpica.lib produced by
9168 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9170 driver or OSPM code. The debug version of the code includes the debug
9172 trace mechanism and has a much larger code and data size. Note that these
9173 values will vary depending on the efficiency of the compiler and the
9174 compiler options used during generation.
9177 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9178 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9180 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
9181 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
9184 2) iASL Compiler/Disassembler and Tools:
9186 Implemented an ANSI C version of the acpixtract utility. This version
9188 automatically extract the DSDT and all SSDTs from the input acpidump text
9189 file and dump the binary output to separate files. It can also display a
9190 summary of the input file including the headers for each table found and
9191 will extract any single ACPI table, with any signature. (See
9192 source/tools/acpixtract)
9194 ----------------------------------------
9195 10 March 2006. Summary of changes for version 20060310:
9197 1) ACPI CA Core Subsystem:
9199 Tagged all external interfaces to the subsystem with the new
9200 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
9202 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
9203 macro. The default definition is NULL.
9205 Added the ACPI_THREAD_ID type for the return value from
9207 This allows the host to define this as necessary to simplify kernel
9208 integration. The default definition is ACPI_NATIVE_UINT.
9210 Fixed two interpreter problems related to error processing, the deletion
9212 objects, and placing invalid pointers onto the internal operator result
9213 stack. BZ 6028, 6151 (Valery Podrezov)
9215 Increased the reference count threshold where a warning is emitted for
9217 reference counts in order to eliminate unnecessary warnings on systems
9219 large namespaces (especially 64-bit.) Increased the value from 0x400 to
9222 Due to universal disagreement as to the meaning of the 'c' in the
9224 function, the ACPI_MEM_CALLOCATE macro has been renamed to
9225 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
9226 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
9229 Code and Data Size: These are the sizes for the acpica.lib produced by
9231 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9233 driver or OSPM code. The debug version of the code includes the debug
9235 trace mechanism and has a much larger code and data size. Note that these
9236 values will vary depending on the efficiency of the compiler and the
9237 compiler options used during generation.
9240 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9241 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9243 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9244 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
9247 2) iASL Compiler/Disassembler:
9249 Disassembler: implemented support for symbolic resource descriptor
9250 references. If a CreateXxxxField operator references a fixed offset
9253 resource descriptor, a name is assigned to the descriptor and the offset
9255 translated to the appropriate resource tag and pathname. The addition of
9256 this support brings the disassembled code very close to the original ASL
9257 source code and helps eliminate run-time errors when the disassembled
9259 is modified (and recompiled) in such a way as to invalidate the original
9262 Implemented support for a Descriptor Name as the last parameter to the
9264 Register() macro. This parameter was inadvertently left out of the ACPI
9265 specification, and will be added for ACPI 3.0b.
9267 Fixed a problem where the use of the "_OSI" string (versus the full path
9268 "\_OSI") caused an internal compiler error. ("No back ptr to op")
9270 Fixed a problem with the error message that occurs when an invalid string
9272 used for a _HID object (such as one with an embedded asterisk:
9274 The correct message is now displayed.
9276 ----------------------------------------
9277 17 February 2006. Summary of changes for version 20060217:
9279 1) ACPI CA Core Subsystem:
9281 Implemented a change to the IndexField support to match the behavior of
9283 Microsoft AML interpreter. The value written to the Index register is now
9285 byte offset, no longer an index based upon the width of the Data
9287 This should fix IndexField problems seen on some machines where the Data
9288 register is not exactly one byte wide. The ACPI specification will be
9289 clarified on this point.
9291 Fixed a problem where several resource descriptor types could overrun the
9292 internal descriptor buffer due to size miscalculation: VendorShort,
9293 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
9294 affect all platforms.
9296 Fixed a problem where individual resource descriptors were misaligned
9298 the internal buffer, causing alignment faults on IA64 platforms.
9300 Code and Data Size: These are the sizes for the acpica.lib produced by
9302 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
9304 driver or OSPM code. The debug version of the code includes the debug
9306 trace mechanism and has a much larger code and data size. Note that these
9307 values will vary depending on the efficiency of the compiler and the
9308 compiler options used during generation.
9311 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9312 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9314 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
9315 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
9318 2) iASL Compiler/Disassembler:
9320 Implemented support for new reserved names: _WDG and _WED are Microsoft
9321 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
9322 defined method (Throttling Depth Limit.)
9324 Fixed a problem where a zero-length VendorShort or VendorLong resource
9325 descriptor was incorrectly emitted as a descriptor of length one.
9327 ----------------------------------------
9328 10 February 2006. Summary of changes for version 20060210:
9330 1) ACPI CA Core Subsystem:
9332 Removed a couple of extraneous ACPI_ERROR messages that appeared during
9333 normal execution. These became apparent after the conversion from
9336 Fixed a problem where the CreateField operator could hang if the BitIndex
9338 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
9340 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
9341 failed with an exception. This also fixes a couple of related RefOf and
9342 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
9344 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
9346 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
9350 Implemented a memory cleanup at the end of the execution of each
9352 of an AML While() loop, preventing the accumulation of outstanding
9354 (Valery Podrezov, BZ 5427)
9356 Eliminated a chunk of duplicate code in the object resolution code.
9360 Fixed several warnings during the 64-bit code generation.
9362 The AcpiSrc source code conversion tool now inserts one line of
9364 after an if() statement that is followed immediately by a comment,
9366 readability of the Linux code.
9368 Code and Data Size: The current and previous library sizes for the core
9369 subsystem are shown below. These are the code and data sizes for the
9370 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9372 values do not include any ACPI driver or OSPM code. The debug version of
9374 code includes the debug output trace mechanism and has a much larger code
9375 and data size. Note that these values will vary depending on the
9377 of the compiler and the compiler options used during generation.
9380 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9381 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9383 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
9384 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
9387 2) iASL Compiler/Disassembler:
9389 Fixed a problem with the disassembly of a BankField operator with a
9391 expression for the BankValue parameter.
9393 ----------------------------------------
9394 27 January 2006. Summary of changes for version 20060127:
9396 1) ACPI CA Core Subsystem:
9398 Implemented support in the Resource Manager to allow unresolved
9400 references within resource package objects for the _PRT method. This
9402 is in addition to the previously implemented unresolved reference support
9403 within the AML parser. If the interpreter slack mode is enabled, these
9404 unresolved references will be passed through to the caller as a NULL
9408 Implemented and deployed new macros and functions for error and warning
9409 messages across the subsystem. These macros are simpler and generate less
9410 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
9411 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
9412 macros remain defined to allow ACPI drivers time to migrate to the new
9415 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
9417 Acquire/Release Lock OSL interfaces.
9419 Fixed a problem where Alias ASL operators are sometimes not correctly
9420 resolved, in both the interpreter and the iASL compiler.
9422 Fixed several problems with the implementation of the
9423 ConcatenateResTemplate
9424 ASL operator. As per the ACPI specification, zero length buffers are now
9425 treated as a single EndTag. One-length buffers always cause a fatal
9426 exception. Non-zero length buffers that do not end with a full 2-byte
9428 cause a fatal exception.
9430 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
9431 interface. (With assistance from Thomas Renninger)
9433 Code and Data Size: The current and previous library sizes for the core
9434 subsystem are shown below. These are the code and data sizes for the
9435 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9437 values do not include any ACPI driver or OSPM code. The debug version of
9439 code includes the debug output trace mechanism and has a much larger code
9440 and data size. Note that these values will vary depending on the
9442 of the compiler and the compiler options used during generation.
9445 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9446 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9448 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
9449 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
9452 2) iASL Compiler/Disassembler:
9454 Fixed an internal error that was generated for any forward references to
9458 ----------------------------------------
9459 13 January 2006. Summary of changes for version 20060113:
9461 1) ACPI CA Core Subsystem:
9463 Added 2006 copyright to all module headers and signons. This affects
9464 virtually every file in the ACPICA core subsystem, iASL compiler, and the
9467 Enhanced the ACPICA error reporting in order to simplify user migration
9469 the non-debug version of ACPICA. Replaced all instances of the
9470 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
9472 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
9473 respectively. This preserves all error and warning messages in the non-
9475 version of the ACPICA code (this has been referred to as the "debug lite"
9476 option.) Over 200 cases were converted to create a total of over 380
9477 error/warning messages across the ACPICA code. This increases the code
9479 data size of the default non-debug version of the code somewhat (about
9481 but all error/warning reporting may be disabled if desired (and code
9482 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
9483 configuration option. The size of the debug version of ACPICA remains
9487 Fixed a memory leak within the AML Debugger "Set" command. One object was
9488 not properly deleted for every successful invocation of the command.
9490 Code and Data Size: The current and previous library sizes for the core
9491 subsystem are shown below. These are the code and data sizes for the
9492 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9494 values do not include any ACPI driver or OSPM code. The debug version of
9496 code includes the debug output trace mechanism and has a much larger code
9497 and data size. Note that these values will vary depending on the
9499 of the compiler and the compiler options used during generation.
9502 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9503 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9505 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
9506 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
9509 2) iASL Compiler/Disassembler:
9511 The compiler now officially supports the ACPI 3.0a specification that was
9512 released on December 30, 2005. (Specification is available at
9515 ----------------------------------------
9516 16 December 2005. Summary of changes for version 20051216:
9518 1) ACPI CA Core Subsystem:
9520 Implemented optional support to allow unresolved names within ASL Package
9521 objects. A null object is inserted in the package when a named reference
9522 cannot be located in the current namespace. Enabled via the interpreter
9523 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
9525 that contain such code.
9527 Implemented an optimization to the initialization sequence that can
9529 boot time. During ACPI device initialization, the _STA method is now run
9531 and only if the _INI method exists. The _STA method is used to determine
9533 the device is present; An _INI can only be run if _STA returns present,
9535 it is a waste of time to run the _STA method if the _INI does not exist.
9536 (Prototype and assistance from Dong Wei)
9538 Implemented use of the C99 uintptr_t for the pointer casting macros if it
9540 available in the current compiler. Otherwise, the default (void *) cast
9544 Fixed some possible memory leaks found within the execution path of the
9545 Break, Continue, If, and CreateField operators. (Valery Podrezov)
9547 Fixed a problem introduced in the 20051202 release where an exception is
9548 generated during method execution if a control method attempts to declare
9551 Moved resource descriptor string constants that are used by both the AML
9552 disassembler and AML debugger to the common utilities directory so that
9553 these components are independent.
9555 Implemented support in the AcpiExec utility (-e switch) to globally
9557 exceptions during control method execution (method is not aborted.)
9559 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
9562 Code and Data Size: The current and previous library sizes for the core
9563 subsystem are shown below. These are the code and data sizes for the
9564 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9566 values do not include any ACPI driver or OSPM code. The debug version of
9568 code includes the debug output trace mechanism and has a much larger code
9569 and data size. Note that these values will vary depending on the
9571 of the compiler and the compiler options used during generation.
9574 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9575 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9577 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
9578 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
9581 2) iASL Compiler/Disassembler:
9583 Fixed a problem where a CPU stack overflow fault could occur if a
9585 method call was made from within a Return statement.
9587 ----------------------------------------
9588 02 December 2005. Summary of changes for version 20051202:
9590 1) ACPI CA Core Subsystem:
9592 Modified the parsing of control methods to no longer create namespace
9593 objects during the first pass of the parse. Objects are now created only
9594 during the execute phase, at the moment the namespace creation operator
9596 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
9598 should eliminate ALREADY_EXISTS exceptions seen on some machines where
9599 reentrant control methods are protected by an AML mutex. The mutex will
9601 correctly block multiple threads from attempting to create the same
9605 Increased the number of available Owner Ids for namespace object tracking
9606 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
9608 some machines with a large number of ACPI tables (either static or
9611 Fixed a problem with the AcpiExec utility where a fault could occur when
9613 -b switch (batch mode) is used.
9615 Enhanced the namespace dump routine to output the owner ID for each
9618 Code and Data Size: The current and previous library sizes for the core
9619 subsystem are shown below. These are the code and data sizes for the
9620 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9622 values do not include any ACPI driver or OSPM code. The debug version of
9624 code includes the debug output trace mechanism and has a much larger code
9625 and data size. Note that these values will vary depending on the
9627 of the compiler and the compiler options used during generation.
9630 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9631 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9633 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9634 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
9637 2) iASL Compiler/Disassembler:
9639 Fixed a parse error during compilation of certain Switch/Case constructs.
9641 simplify the parse, the grammar now allows for multiple Default
9643 and this error is now detected and flagged during the analysis phase.
9645 Disassembler: The disassembly now includes the contents of the original
9646 table header within a comment at the start of the file. This includes the
9647 name and version of the original ASL compiler.
9649 ----------------------------------------
9650 17 November 2005. Summary of changes for version 20051117:
9652 1) ACPI CA Core Subsystem:
9654 Fixed a problem in the AML parser where the method thread count could be
9655 decremented below zero if any errors occurred during the method parse
9657 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
9659 This also fixed a related regression with the mechanism that detects and
9660 corrects methods that cannot properly handle reentrancy (related to the
9661 deployment of the new OwnerId mechanism.)
9663 Eliminated the pre-parsing of control methods (to detect errors) during
9664 table load. Related to the problem above, this was causing unwind issues
9666 any errors occurred during the parse, and it seemed to be overkill. A
9668 load should not be aborted if there are problems with any single control
9669 method, thus rendering this feature rather pointless.
9671 Fixed a problem with the new table-driven resource manager where an
9673 buffer overflow could occur for small resource templates.
9675 Implemented a new external interface, AcpiGetVendorResource. This
9677 will find and return a vendor-defined resource descriptor within a _CRS
9679 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
9682 Removed the length limit (200) on string objects as per the upcoming ACPI
9683 3.0A specification. This affects the following areas of the interpreter:
9685 any implicit conversion of a Buffer to a String, 2) a String object
9687 of the ASL Concatentate operator, 3) the String object result of the ASL
9690 Fixed a problem in the Windows OS interface layer (OSL) where a
9692 on a semaphore object would incorrectly timeout. This allows the
9693 multithreading features of the AcpiExec utility to work properly under
9696 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
9697 the recently added file named "utresrc.c".
9699 Code and Data Size: The current and previous library sizes for the core
9700 subsystem are shown below. These are the code and data sizes for the
9701 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9703 values do not include any ACPI driver or OSPM code. The debug version of
9705 code includes the debug output trace mechanism and has a much larger code
9706 and data size. Note that these values will vary depending on the
9708 of the compiler and the compiler options used during generation.
9711 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9712 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9714 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9715 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9718 2) iASL Compiler/Disassembler:
9720 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
9721 specification. For the iASL compiler, this means that string literals
9723 the source ASL can be of any length.
9725 Enhanced the listing output to dump the AML code for resource descriptors
9726 immediately after the ASL code for each descriptor, instead of in a block
9728 the end of the entire resource template.
9730 Enhanced the compiler debug output to dump the entire original parse tree
9731 constructed during the parse phase, before any transforms are applied to
9733 tree. The transformed tree is dumped also.
9735 ----------------------------------------
9736 02 November 2005. Summary of changes for version 20051102:
9738 1) ACPI CA Core Subsystem:
9740 Modified the subsystem initialization sequence to improve GPE support.
9742 GPE initialization has been split into two parts in order to defer
9744 of the _PRW methods (Power Resources for Wake) until after the hardware
9746 fully initialized and the SCI handler is installed. This allows the _PRW
9747 methods to access fields protected by the Global Lock. This will fix
9749 where a NO_GLOBAL_LOCK exception has been seen during initialization.
9751 Converted the ACPI internal object disassemble and display code within
9753 AML debugger to fully table-driven operation, reducing code size and
9754 increasing maintainability.
9756 Fixed a regression with the ConcatenateResTemplate() ASL operator
9758 in the 20051021 release.
9760 Implemented support for "local" internal ACPI object types within the
9761 debugger "Object" command and the AcpiWalkNamespace external interfaces.
9762 These local types include RegionFields, BankFields, IndexFields, Alias,
9766 Moved common AML resource handling code into a new file, "utresrc.c".
9768 code is shared by both the Resource Manager and the AML Debugger.
9770 Code and Data Size: The current and previous library sizes for the core
9771 subsystem are shown below. These are the code and data sizes for the
9772 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9774 values do not include any ACPI driver or OSPM code. The debug version of
9776 code includes the debug output trace mechanism and has a much larger code
9777 and data size. Note that these values will vary depending on the
9779 of the compiler and the compiler options used during generation.
9782 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9783 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9785 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9786 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9789 2) iASL Compiler/Disassembler:
9791 Fixed a problem with very large initializer lists (more than 4000
9793 for both Buffer and Package objects where the parse stack could overflow.
9795 Enhanced the pre-compile source code scan for non-ASCII characters to
9797 characters within comment fields. The scan is now always performed and is
9799 longer optional, detecting invalid characters within a source file
9800 immediately rather than during the parse phase or later.
9802 Enhanced the ASL grammar definition to force early reductions on all
9804 style grammar elements so that the overall parse stack usage is greatly
9805 reduced. This should improve performance and reduce the possibility of
9809 Eliminated all reduce/reduce conflicts in the iASL parser generation.
9811 with the addition of a %expected statement, the compiler generates from
9812 source with no warnings.
9814 Fixed a possible segment fault in the disassembler if the input filename
9815 does not contain a "dot" extension (Thomas Renninger).
9817 ----------------------------------------
9818 21 October 2005. Summary of changes for version 20051021:
9820 1) ACPI CA Core Subsystem:
9822 Implemented support for the EM64T and other x86-64 processors. This
9823 essentially entails recognizing that these processors support non-aligned
9824 memory transfers. Previously, all 64-bit processors were assumed to lack
9825 hardware support for non-aligned transfers.
9827 Completed conversion of the Resource Manager to nearly full table-driven
9828 operation. Specifically, the resource conversion code (convert AML to
9829 internal format and the reverse) and the debug code to dump internal
9830 resource descriptors are fully table-driven, reducing code and data size
9832 improving maintainability.
9834 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
9836 on 64-bit processors instead of a fixed 32-bit word. (With assistance
9838 Alexey Starikovskiy)
9840 Implemented support within the resource conversion code for the Type-
9841 Specific byte within the various ACPI 3.0 *WordSpace macros.
9843 Fixed some issues within the resource conversion code for the type-
9845 flags for both Memory and I/O address resource descriptors. For Memory,
9846 implemented support for the MTP and TTP flags. For I/O, split the TRS and
9847 TTP flags into two separate fields.
9849 Code and Data Size: The current and previous library sizes for the core
9850 subsystem are shown below. These are the code and data sizes for the
9851 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9853 values do not include any ACPI driver or OSPM code. The debug version of
9855 code includes the debug output trace mechanism and has a much larger code
9856 and data size. Note that these values will vary depending on the
9858 of the compiler and the compiler options used during generation.
9861 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9862 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9864 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9865 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9869 2) iASL Compiler/Disassembler:
9871 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
9873 corresponding ResourceSource string was not also present in a resource
9874 descriptor declaration. This restriction caused problems with existing
9875 AML/ASL code that includes the Index byte without the string. When such
9877 was disassembled, it could not be compiled without modification. Further,
9878 the modified code created a resource template with a different size than
9880 original, breaking code that used fixed offsets into the resource
9884 Removed a recent feature of the disassembler to ignore a lone
9886 byte. This byte is now emitted if present so that the exact AML can be
9887 reproduced when the disassembled code is recompiled.
9889 Improved comments and text alignment for the resource descriptor code
9890 emitted by the disassembler.
9892 Implemented disassembler support for the ACPI 3.0 AccessSize field within
9894 Register() resource descriptor.
9896 ----------------------------------------
9897 30 September 2005. Summary of changes for version 20050930:
9899 1) ACPI CA Core Subsystem:
9901 Completed a major overhaul of the Resource Manager code - specifically,
9902 optimizations in the area of the AML/internal resource conversion code.
9904 code has been optimized to simplify and eliminate duplicated code, CPU
9906 use has been decreased by optimizing function parameters and local
9907 variables, and naming conventions across the manager have been
9909 for clarity and ease of maintenance (this includes function, parameter,
9910 variable, and struct/typedef names.) The update may force changes in some
9911 driver code, depending on how resources are handled by the host OS.
9913 All Resource Manager dispatch and information tables have been moved to a
9914 single location for clarity and ease of maintenance. One new file was
9915 created, named "rsinfo.c".
9917 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
9918 guarantee that the argument is not evaluated twice, making them less
9920 to macro side-effects. However, since there exists the possibility of
9921 additional stack use if a particular compiler cannot optimize them (such
9923 in the debug generation case), the original macros are optionally
9925 Note that some invocations of the return_VALUE macro may now cause size
9926 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
9928 eliminate these. (From Randy Dunlap)
9930 Implemented a new mechanism to enable debug tracing for individual
9932 methods. A new external interface, AcpiDebugTrace, is provided to enable
9933 this mechanism. The intent is to allow the host OS to easily enable and
9934 disable tracing for problematic control methods. This interface can be
9935 easily exposed to a user or debugger interface if desired. See the file
9936 psxface.c for details.
9938 AcpiUtCallocate will now return a valid pointer if a length of zero is
9939 specified - a length of one is used and a warning is issued. This matches
9940 the behavior of AcpiUtAllocate.
9942 Code and Data Size: The current and previous library sizes for the core
9943 subsystem are shown below. These are the code and data sizes for the
9944 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9946 values do not include any ACPI driver or OSPM code. The debug version of
9948 code includes the debug output trace mechanism and has a much larger code
9949 and data size. Note that these values will vary depending on the
9951 of the compiler and the compiler options used during generation.
9954 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9955 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9957 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9958 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9961 2) iASL Compiler/Disassembler:
9963 A remark is issued if the effective compile-time length of a package or
9964 buffer is zero. Previously, this was a warning.
9966 ----------------------------------------
9967 16 September 2005. Summary of changes for version 20050916:
9969 1) ACPI CA Core Subsystem:
9971 Fixed a problem within the Resource Manager where support for the Generic
9972 Register descriptor was not fully implemented. This descriptor is now
9974 recognized, parsed, disassembled, and displayed.
9976 Completely restructured the Resource Manager code to utilize table-driven
9977 dispatch and lookup, eliminating many of the large switch() statements.
9979 reduces overall subsystem code size and code complexity. Affects the
9980 resource parsing and construction, disassembly, and debug dump output.
9982 Cleaned up and restructured the debug dump output for all resource
9983 descriptors. Improved readability of the output and reduced code size.
9985 Fixed a problem where changes to internal data structures caused the
9986 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
9988 Code and Data Size: The current and previous library sizes for the core
9989 subsystem are shown below. These are the code and data sizes for the
9990 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9992 values do not include any ACPI driver or OSPM code. The debug version of
9994 code includes the debug output trace mechanism and has a much larger code
9995 and data size. Note that these values will vary depending on the
9997 of the compiler and the compiler options used during generation.
10000 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10001 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10003 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
10004 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
10007 2) iASL Compiler/Disassembler:
10009 Updated the disassembler to automatically insert an EndDependentFn()
10011 into the ASL stream if this macro is missing in the original AML code,
10012 simplifying compilation of the resulting ASL module.
10014 Fixed a problem in the disassembler where a disassembled ResourceSource
10015 string (within a large resource descriptor) was not surrounded by quotes
10017 not followed by a comma, causing errors when the resulting ASL module was
10018 compiled. Also, escape sequences within a ResourceSource string are now
10019 handled correctly (especially "\\")
10021 ----------------------------------------
10022 02 September 2005. Summary of changes for version 20050902:
10024 1) ACPI CA Core Subsystem:
10026 Fixed a problem with the internal Owner ID allocation and deallocation
10027 mechanisms for control method execution and recursive method invocation.
10028 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
10029 messages seen on some systems. Recursive method invocation depth is
10030 currently limited to 255. (Alexey Starikovskiy)
10032 Completely eliminated all vestiges of support for the "module-level
10033 executable code" until this support is fully implemented and debugged.
10035 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
10036 some systems that invoke this support.
10038 Fixed a problem within the resource manager code where the transaction
10040 for a 64-bit address descriptor were handled incorrectly in the type-
10041 specific flag byte.
10043 Consolidated duplicate code within the address descriptor resource
10045 code, reducing overall subsystem code size.
10047 Fixed a fault when using the AML debugger "disassemble" command to
10048 disassemble individual control methods.
10050 Removed references to the "release_current" directory within the Unix
10053 Code and Data Size: The current and previous core subsystem library sizes
10054 are shown below. These are the code and data sizes for the acpica.lib
10055 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
10056 include any ACPI driver or OSPM code. The debug version of the code
10058 the debug output trace mechanism and has a much larger code and data
10060 Note that these values will vary depending on the efficiency of the
10062 and the compiler options used during generation.
10065 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10066 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10068 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
10069 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
10072 2) iASL Compiler/Disassembler:
10074 Implemented an error check for illegal duplicate values in the interrupt
10076 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
10079 Implemented error checking for the Irq() and IrqNoFlags() macros to
10081 too many values in the interrupt list (16 max) and invalid values in the
10082 list (range 0 - 15)
10084 The maximum length string literal within an ASL file is now restricted to
10085 200 characters as per the ACPI specification.
10087 Fixed a fault when using the -ln option (generate namespace listing).
10089 Implemented an error check to determine if a DescriptorName within a
10090 resource descriptor has already been used within the current scope.
10092 ----------------------------------------
10093 15 August 2005. Summary of changes for version 20050815:
10095 1) ACPI CA Core Subsystem:
10097 Implemented a full bytewise compare to determine if a table load request
10099 attempting to load a duplicate table. The compare is performed if the
10101 signatures and table lengths match. This will allow different tables with
10102 the same OEM Table ID and revision to be loaded - probably against the
10104 specification, but discovered in the field nonetheless.
10106 Added the changes.txt logfile to each of the zipped release packages.
10108 Code and Data Size: Current and previous core subsystem library sizes are
10109 shown below. These are the code and data sizes for the acpica.lib
10111 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10112 any ACPI driver or OSPM code. The debug version of the code includes the
10113 debug output trace mechanism and has a much larger code and data size.
10115 that these values will vary depending on the efficiency of the compiler
10117 the compiler options used during generation.
10120 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10121 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10123 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10124 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
10127 2) iASL Compiler/Disassembler:
10129 Fixed a problem where incorrect AML code could be generated for Package
10130 objects if optimization is disabled (via the -oa switch).
10132 Fixed a problem with where incorrect AML code is generated for variable-
10133 length packages when the package length is not specified and the number
10135 initializer values is greater than 255.
10138 ----------------------------------------
10139 29 July 2005. Summary of changes for version 20050729:
10141 1) ACPI CA Core Subsystem:
10143 Implemented support to ignore an attempt to install/load a particular
10145 table more than once. Apparently there exists BIOS code that repeatedly
10146 attempts to load the same SSDT upon certain events. With assistance from
10147 Venkatesh Pallipadi.
10149 Restructured the main interface to the AML parser in order to correctly
10150 handle all exceptional conditions. This will prevent leakage of the
10152 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
10154 machines. With assistance from Alexey Starikovskiy.
10156 Support for "module level code" has been disabled in this version due to
10158 number of issues that have appeared on various machines. The support can
10160 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
10161 compilation. When the issues are fully resolved, the code will be enabled
10165 Modified the internal functions for debug print support to define the
10166 FunctionName parameter as a (const char *) for compatibility with
10168 built-in macros such as __FUNCTION__, etc.
10170 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
10172 Implemented support to display an object count summary for the AML
10174 commands Object and Methods.
10176 Code and Data Size: Current and previous core subsystem library sizes are
10177 shown below. These are the code and data sizes for the acpica.lib
10179 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10180 any ACPI driver or OSPM code. The debug version of the code includes the
10181 debug output trace mechanism and has a much larger code and data size.
10183 that these values will vary depending on the efficiency of the compiler
10185 the compiler options used during generation.
10188 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10189 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10191 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
10192 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
10195 2) iASL Compiler/Disassembler:
10197 Fixed a regression that appeared in the 20050708 version of the compiler
10198 where an error message was inadvertently emitted for invocations of the
10200 reserved control method.
10202 ----------------------------------------
10203 08 July 2005. Summary of changes for version 20050708:
10205 1) ACPI CA Core Subsystem:
10207 The use of the CPU stack in the debug version of the subsystem has been
10208 considerably reduced. Previously, a debug structure was declared in every
10209 function that used the debug macros. This structure has been removed in
10210 favor of declaring the individual elements as parameters to the debug
10211 functions. This reduces the cumulative stack use during nested execution
10213 ACPI function calls at the cost of a small increase in the code size of
10215 debug version of the subsystem. With assistance from Alexey Starikovskiy
10219 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
10220 headers to define a macro that will return the current function name at
10221 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
10223 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
10224 compiler-dependent header, the function name is saved on the CPU stack
10226 pointer per function.) This mechanism is used because apparently there
10227 exists no standard ANSI-C defined macro that that returns the function
10230 Redesigned and reimplemented the "Owner ID" mechanism used to track
10231 namespace objects created/deleted by ACPI tables and control method
10232 execution. A bitmap is now used to allocate and free the IDs, thus
10234 the wraparound problem present in the previous implementation. The size
10236 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
10239 Removed the UINT32_BIT and UINT16_BIT types that were used for the
10241 flag definitions within the headers for the predefined ACPI tables. These
10242 have been replaced by UINT8_BIT in order to increase the code portability
10244 the subsystem. If the use of UINT8 remains a problem, we may be forced to
10245 eliminate bitfields entirely because of a lack of portability.
10247 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
10249 is a frequently used function and this improvement increases the
10251 of the entire subsystem (Alexey Starikovskiy).
10253 Fixed several possible memory leaks and the inverse - premature object
10254 deletion (Alexey Starikovskiy).
10256 Code and Data Size: Current and previous core subsystem library sizes are
10257 shown below. These are the code and data sizes for the acpica.lib
10259 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10260 any ACPI driver or OSPM code. The debug version of the code includes the
10261 debug output trace mechanism and has a much larger code and data size.
10263 that these values will vary depending on the efficiency of the compiler
10265 the compiler options used during generation.
10268 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10269 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10271 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
10272 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
10274 ----------------------------------------
10275 24 June 2005. Summary of changes for version 20050624:
10277 1) ACPI CA Core Subsystem:
10279 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
10280 the host-defined cache object. This allows the OSL implementation to
10282 and type this object in any manner desired, simplifying the OSL
10283 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
10284 Linux, and should be defined in the OS-specific header file for other
10285 operating systems as required.
10287 Changed the interface to AcpiOsAcquireObject to directly return the
10288 requested object as the function return (instead of ACPI_STATUS.) This
10289 change was made for performance reasons, since this is the purpose of the
10290 interface in the first place. AcpiOsAcquireObject is now similar to the
10291 AcpiOsAllocate interface.
10293 Implemented a new AML debugger command named Businfo. This command
10295 information about all devices that have an associate _PRT object. The
10297 _HID, _UID, and _CID are displayed for these devices.
10299 Modified the initialization sequence in AcpiInitializeSubsystem to call
10301 OSL interface AcpiOslInitialize first, before any local initialization.
10303 change was required because the global initialization now calls OSL
10306 Enhanced the Dump command to display the entire contents of Package
10308 (including all sub-objects and their values.)
10310 Restructured the code base to split some files because of size and/or
10311 because the code logically belonged in a separate file. New files are
10313 below. All makefiles and project files included in the ACPI CA release
10316 utilities/utcache.c /* Local cache interfaces */
10317 utilities/utmutex.c /* Local mutex support */
10318 utilities/utstate.c /* State object support */
10319 interpreter/parser/psloop.c /* Main AML parse loop */
10321 Code and Data Size: Current and previous core subsystem library sizes are
10322 shown below. These are the code and data sizes for the acpica.lib
10324 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10325 any ACPI driver or OSPM code. The debug version of the code includes the
10326 debug output trace mechanism and has a much larger code and data size.
10328 that these values will vary depending on the efficiency of the compiler
10330 the compiler options used during generation.
10333 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10334 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10336 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
10337 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
10340 2) iASL Compiler/Disassembler:
10342 Fixed a regression introduced in version 20050513 where the use of a
10344 object within a Case() statement caused a compile time exception. The
10345 original behavior has been restored (a Match() operator is emitted.)
10347 ----------------------------------------
10348 17 June 2005. Summary of changes for version 20050617:
10350 1) ACPI CA Core Subsystem:
10352 Moved the object cache operations into the OS interface layer (OSL) to
10354 the host OS to handle these operations if desired (for example, the Linux
10355 OSL will invoke the slab allocator). This support is optional; the
10357 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
10359 code in the ACPI CA core. The new OSL interfaces are shown below. See
10360 utalloc.c for an example implementation, and acpiosxf.h for the exact
10361 interface definitions. With assistance from Alexey Starikovskiy.
10365 AcpiOsAcquireObject
10366 AcpiOsReleaseObject
10368 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
10370 and restore a flags parameter. This fits better with many OS lock models.
10371 Note: the current execution state (interrupt handler or not) is no longer
10372 passed to these interfaces. If necessary, the OSL must determine this
10374 by itself, a simple and fast operation. With assistance from Alexey
10377 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
10378 present if the revision of the RSDP was 2 or greater. According to the
10380 specification, the XSDT is optional in all cases, and the table manager
10381 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
10382 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
10386 Fixed an interpreter problem with the Mid() operator in the case of an
10388 string where the resulting output string is of zero length. It now
10390 returns a valid, null terminated string object instead of a string object
10391 with a null pointer.
10393 Fixed a problem with the control method argument handling to allow a
10395 to an Arg object that already contains an object of type Device. The
10397 object is now correctly overwritten. Previously, an error was returned.
10400 Enhanced the debugger Find command to emit object values in addition to
10402 found object pathnames. The output format is the same as the dump
10406 Enhanced the debugger Set command. It now has the ability to set the
10408 of any Named integer object in the namespace (Previously, only method
10410 and args could be set.)
10412 Code and Data Size: Current and previous core subsystem library sizes are
10413 shown below. These are the code and data sizes for the acpica.lib
10415 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10416 any ACPI driver or OSPM code. The debug version of the code includes the
10417 debug output trace mechanism and has a much larger code and data size.
10419 that these values will vary depending on the efficiency of the compiler
10421 the compiler options used during generation.
10424 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10425 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10427 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
10428 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
10431 2) iASL Compiler/Disassembler:
10433 Fixed a regression in the disassembler where if/else/while constructs
10435 output incorrectly. This problem was introduced in the previous release
10436 (20050526). This problem also affected the single-step disassembly in the
10439 Fixed a problem where compiling the reserved _OSI method would randomly
10441 rarely) produce compile errors.
10443 Enhanced the disassembler to emit compilable code in the face of
10445 AML resource descriptors. If the optional ResourceSourceIndex is present,
10446 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
10447 disassembly. Otherwise, the resulting code cannot be compiled without
10450 ----------------------------------------
10451 26 May 2005. Summary of changes for version 20050526:
10453 1) ACPI CA Core Subsystem:
10455 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
10456 the module level (not within a control method.) These opcodes are
10458 exactly once at the time the table is loaded. This type of code was legal
10460 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
10462 order to provide backwards compatibility with earlier BIOS
10464 This eliminates the "Encountered executable code at module level" warning
10465 that was previously generated upon detection of such code.
10467 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
10468 inadvertently be generated during the lookup of namespace objects in the
10469 second pass parse of ACPI tables and control methods. It appears that
10471 problem could occur during the resolution of forward references to
10475 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
10476 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
10477 allows the deadlock detection debug code to be compiled out in the normal
10478 case, improving mutex performance (and overall subsystem performance)
10481 Implemented a handful of miscellaneous fixes for possible memory leaks on
10482 error conditions and error handling control paths. These fixes were
10483 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
10485 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
10487 to prevent a fault in this error case.
10489 Code and Data Size: Current and previous core subsystem library sizes are
10490 shown below. These are the code and data sizes for the acpica.lib
10492 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10493 any ACPI driver or OSPM code. The debug version of the code includes the
10494 debug output trace mechanism and has a much larger code and data size.
10496 that these values will vary depending on the efficiency of the compiler
10498 the compiler options used during generation.
10501 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10502 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10504 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
10505 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
10508 2) iASL Compiler/Disassembler:
10510 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
10511 the module level (not within a control method.) These operators will be
10512 executed once at the time the table is loaded. This type of code was
10514 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
10515 compiler in order to provide backwards compatibility with earlier BIOS
10519 The ACPI integer width (specified via the table revision ID or the -r
10520 override, 32 or 64 bits) is now used internally during compile-time
10522 folding to ensure that constants are truncated to 32 bits if necessary.
10523 Previously, the revision ID value was only emitted in the AML table
10526 An error message is now generated for the Mutex and Method operators if
10528 SyncLevel parameter is outside the legal range of 0 through 15.
10530 Fixed a problem with the Method operator ParameterTypes list handling
10532 3.0). Previously, more than 2 types or 2 arguments generated a syntax
10534 The actual underlying implementation of method argument typechecking is
10535 still under development, however.
10537 ----------------------------------------
10538 13 May 2005. Summary of changes for version 20050513:
10540 1) ACPI CA Core Subsystem:
10542 Implemented support for PCI Express root bridges -- added support for
10544 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
10546 The interpreter now automatically truncates incoming 64-bit constants to
10548 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
10550 also affects the iASL compiler constant folding. (Note: as per below, the
10551 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
10553 Fixed a problem where string and buffer objects with "static" pointers
10554 (pointers to initialization data within an ACPI table) were not handled
10555 consistently. The internal object copy operation now always copies the
10557 to a newly allocated buffer, regardless of whether the source object is
10560 Fixed a problem with the FromBCD operator where an implicit result
10561 conversion was improperly performed while storing the result to the
10563 operand. Since this is an "explicit conversion" operator, the implicit
10564 conversion should never be performed on the output.
10566 Fixed a problem with the CopyObject operator where a copy to an existing
10567 named object did not always completely overwrite the existing object
10569 at name. Specifically, a buffer-to-buffer copy did not delete the
10573 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
10575 structs for consistency.
10577 Code and Data Size: Current and previous core subsystem library sizes are
10578 shown below. These are the code and data sizes for the acpica.lib
10580 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10581 any ACPI driver or OSPM code. The debug version of the code includes the
10582 debug output trace mechanism and has a much larger code and data size.
10584 that these values will vary depending on the efficiency of the compiler
10586 the compiler options used during generation.
10589 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10590 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10591 Current Release: (Same sizes)
10592 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10593 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10596 2) iASL Compiler/Disassembler:
10598 The compiler now emits a warning if an attempt is made to generate a 64-
10600 integer constant from within a 32-bit ACPI table (Revision < 2). The
10602 is truncated to 32 bits.
10604 Fixed a problem with large package objects: if the static length of the
10605 package is greater than 255, the "variable length package" opcode is
10606 emitted. Previously, this caused an error. This requires an update to the
10607 ACPI spec, since it currently (incorrectly) states that packages larger
10609 255 elements are not allowed.
10611 The disassembler now correctly handles variable length packages and
10613 larger than 255 elements.
10615 ----------------------------------------
10616 08 April 2005. Summary of changes for version 20050408:
10618 1) ACPI CA Core Subsystem:
10620 Fixed three cases in the interpreter where an "index" argument to an ASL
10621 function was still (internally) 32 bits instead of the required 64 bits.
10622 This was the Index argument to the Index, Mid, and Match operators.
10624 The "strupr" function is now permanently local (AcpiUtStrupr), since this
10626 not a POSIX-defined function and not present in most kernel-level C
10627 libraries. All references to the C library strupr function have been
10631 Completed the deployment of static functions/prototypes. All prototypes
10633 the static attribute have been moved from the headers to the owning C
10636 Implemented an extract option (-e) for the AcpiBin utility (AML binary
10637 utility). This option allows the utility to extract individual ACPI
10639 from the output of AcpiDmp. It provides the same functionality of the
10640 acpixtract.pl perl script without the worry of setting the correct perl
10641 options. AcpiBin runs on Windows and has not yet been generated/validated
10643 the Linux/Unix environment (but should be soon).
10645 Updated and fixed the table dump option for AcpiBin (-d). This option
10646 converts a single ACPI table to a hex/ascii file, similar to the output
10650 Code and Data Size: Current and previous core subsystem library sizes are
10651 shown below. These are the code and data sizes for the acpica.lib
10653 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10654 any ACPI driver or OSPM code. The debug version of the code includes the
10655 debug output trace mechanism and has a much larger code and data size.
10657 that these values will vary depending on the efficiency of the compiler
10659 the compiler options used during generation.
10662 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
10663 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
10665 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
10666 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
10669 2) iASL Compiler/Disassembler:
10671 Disassembler fix: Added a check to ensure that the table length found in
10673 ACPI table header within the input file is not longer than the actual
10675 file size. This indicates some kind of file or table corruption.
10677 ----------------------------------------
10678 29 March 2005. Summary of changes for version 20050329:
10680 1) ACPI CA Core Subsystem:
10682 An error is now generated if an attempt is made to create a Buffer Field
10684 length zero (A CreateField with a length operand of zero.)
10686 The interpreter now issues a warning whenever executable code at the
10688 level is detected during ACPI table load. This will give some idea of the
10689 prevalence of this type of code.
10691 Implemented support for references to named objects (other than control
10692 methods) within package objects.
10694 Enhanced package object output for the debug object. Package objects are
10696 completely dumped, showing all elements.
10698 Enhanced miscellaneous object output for the debug object. Any object can
10699 now be written to the debug object (for example, a device object can be
10700 written, and the type of the object will be displayed.)
10702 The "static" qualifier has been added to all local functions across both
10704 core subsystem and the iASL compiler.
10706 The number of "long" lines (> 80 chars) within the source has been
10707 significantly reduced, by about 1/3.
10709 Cleaned up all header files to ensure that all CA/iASL functions are
10710 prototyped (even static functions) and the formatting is consistent.
10712 Two new header files have been added, acopcode.h and acnames.h.
10714 Removed several obsolete functions that were no longer used.
10716 Code and Data Size: Current and previous core subsystem library sizes are
10717 shown below. These are the code and data sizes for the acpica.lib
10719 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10720 any ACPI driver or OSPM code. The debug version of the code includes the
10721 debug output trace mechanism and has a much larger code and data size.
10723 that these values will vary depending on the efficiency of the compiler
10725 the compiler options used during generation.
10728 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10729 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10731 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
10732 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
10736 2) iASL Compiler/Disassembler:
10738 Fixed a problem with the resource descriptor generation/support. For the
10739 ResourceSourceIndex and the ResourceSource fields, both must be present,
10741 both must be not present - can't have one without the other.
10743 The compiler now returns non-zero from the main procedure if any errors
10745 occurred during the compilation.
10748 ----------------------------------------
10749 09 March 2005. Summary of changes for version 20050309:
10751 1) ACPI CA Core Subsystem:
10753 The string-to-buffer implicit conversion code has been modified again
10755 a change to the ACPI specification. In order to match the behavior of
10757 other major ACPI implementation, the target buffer is no longer truncated
10759 the source string is smaller than an existing target buffer. This change
10760 requires an update to the ACPI spec, and should eliminate the recent
10761 AE_AML_BUFFER_LIMIT issues.
10763 The "implicit return" support was rewritten to a new algorithm that
10765 the general case. Rather than attempt to determine when a method is about
10767 exit, the result of every ASL operator is saved momentarily until the
10769 next ASL operator is executed. Therefore, no matter how the method exits,
10770 there will always be a saved implicit return value. This feature is only
10771 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
10773 AE_AML_NO_RETURN_VALUE errors when enabled.
10775 Implemented implicit conversion support for the predicate (operand) of
10777 If, Else, and While operators. String and Buffer arguments are
10779 converted to Integers.
10781 Changed the string-to-integer conversion behavior to match the new ACPI
10782 errata: "If no integer object exists, a new integer is created. The ASCII
10783 string is interpreted as a hexadecimal constant. Each string character is
10784 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
10785 with the first character as the most significant digit, and ending with
10787 first non-hexadecimal character or end-of-string." This means that the
10789 non-hex character terminates the conversion and this is the code that was
10792 Fixed a problem where the ObjectType operator would fail (fault) when
10794 on an Index of a Package which pointed to a null package element. The
10795 operator now properly returns zero (Uninitialized) in this case.
10797 Fixed a problem where the While operator used excessive memory by not
10798 properly popping the result stack during execution. There was no memory
10800 after execution, however. (Code provided by Valery Podrezov.)
10802 Fixed a problem where references to control methods within Package
10804 caused the method to be invoked, instead of producing a reference object
10805 pointing to the method.
10807 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
10809 improve performance and reduce code size. (Code provided by Alexey
10812 Code and Data Size: Current and previous core subsystem library sizes are
10813 shown below. These are the code and data sizes for the acpica.lib
10815 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10816 any ACPI driver or OSPM code. The debug version of the code includes the
10817 debug output trace mechanism and has a much larger code and data size.
10819 that these values will vary depending on the efficiency of the compiler
10821 the compiler options used during generation.
10824 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10825 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10827 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10828 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10831 2) iASL Compiler/Disassembler:
10833 Fixed a problem with the Return operator with no arguments. Since the AML
10834 grammar for the byte encoding requires an operand for the Return opcode,
10836 compiler now emits a Return(Zero) for this case. An ACPI specification
10837 update has been written for this case.
10839 For tables other than the DSDT, namepath optimization is automatically
10840 disabled. This is because SSDTs can be loaded anywhere in the namespace,
10842 compiler has no knowledge of where, and thus cannot optimize namepaths.
10844 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
10845 inadvertently omitted from the ACPI specification, and will require an
10846 update to the spec.
10848 The source file scan for ASCII characters is now optional (-a). This
10850 was made because some vendors place non-ascii characters within comments.
10851 However, the scan is simply a brute-force byte compare to ensure all
10852 characters in the file are in the range 0x00 to 0x7F.
10854 Fixed a problem with the CondRefOf operator where the compiler was
10855 inappropriately checking for the existence of the target. Since the point
10857 the operator is to check for the existence of the target at run-time, the
10858 compiler no longer checks for the target existence.
10860 Fixed a problem where errors generated from the internal AML interpreter
10861 during constant folding were not handled properly, causing a fault.
10863 Fixed a problem with overly aggressive range checking for the Stall
10864 operator. The valid range (max 255) is now only checked if the operand is
10866 type Integer. All other operand types cannot be statically checked.
10868 Fixed a problem where control method references within the RefOf,
10870 and ObjectType operators were not treated properly. They are now treated
10872 actual references, not method invocations.
10874 Fixed and enhanced the "list namespace" option (-ln). This option was
10876 a number of releases ago.
10878 Improved error handling for the Field, IndexField, and BankField
10880 The compiler now cleanly reports and recovers from errors in the field
10881 component (FieldUnit) list.
10883 Fixed a disassembler problem where the optional ResourceDescriptor fields
10884 TRS and TTP were not always handled correctly.
10886 Disassembler - Comments in output now use "//" instead of "/*"
10888 ----------------------------------------
10889 28 February 2005. Summary of changes for version 20050228:
10891 1) ACPI CA Core Subsystem:
10893 Fixed a problem where the result of an Index() operator (an object
10894 reference) must increment the reference count on the target object for
10896 life of the object reference.
10898 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
10899 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
10901 resource descriptors.
10903 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
10904 Space Descriptor" string, indicating interpreter support for the
10908 Implemented header support for the new ACPI 3.0 FADT flag bits.
10910 Implemented header support for the new ACPI 3.0 PCI Express bits for the
10912 status/enable registers.
10914 Updated header support for the MADT processor local Apic struct and MADT
10915 platform interrupt source struct for new ACPI 3.0 fields.
10917 Implemented header support for the SRAT and SLIT ACPI tables.
10919 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
10923 Code and Data Size: Current and previous core subsystem library sizes are
10924 shown below. These are the code and data sizes for the acpica.lib
10926 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10927 any ACPI driver or OSPM code. The debug version of the code includes the
10928 debug output trace mechanism and has a much larger code and data size.
10930 that these values will vary depending on the efficiency of the compiler
10932 the compiler options used during generation.
10935 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10936 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10938 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10939 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10942 2) iASL Compiler/Disassembler:
10944 Fixed a problem with the internal 64-bit String-to-integer conversion
10946 strings less than two characters long.
10948 Fixed a problem with constant folding where the result of the Index()
10949 operator can not be considered a constant. This means that Index() cannot
10951 a type3 opcode and this will require an update to the ACPI specification.
10953 Disassembler: Implemented support for the TTP, MTP, and TRS resource
10954 descriptor fields. These fields were inadvertently ignored and not output
10956 the disassembly of the resource descriptor.
10959 ----------------------------------------
10960 11 February 2005. Summary of changes for version 20050211:
10962 1) ACPI CA Core Subsystem:
10964 Implemented ACPI 3.0 support for implicit conversion within the Match()
10965 operator. MatchObjects can now be of type integer, buffer, or string
10967 of just type integer. Package elements are implicitly converted to the
10969 of the MatchObject. This change aligns the behavior of Match() with the
10970 behavior of the other logical operators (LLess(), etc.) It also requires
10972 errata change to the ACPI specification as this support was intended for
10973 ACPI 3.0, but was inadvertently omitted.
10975 Fixed a problem with the internal implicit "to buffer" conversion.
10977 that are converted to buffers will cause buffer truncation if the string
10979 smaller than the target buffer. Integers that are converted to buffers
10981 not cause buffer truncation, only zero extension (both as per the ACPI
10982 spec.) The problem was introduced when code was added to truncate the
10983 buffer, but this should not be performed in all cases, only the string
10986 Fixed a problem with the Buffer and Package operators where the
10988 would get confused if two such operators were used as operands to an ASL
10989 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
10990 stack was not being popped after the execution of these operators,
10992 in an AE_NO_RETURN_VALUE exception.
10994 Fixed a problem with constructs of the form Store(Index(...),...). The
10995 reference object returned from Index was inadvertently resolved to an
10997 value. This problem was introduced in version 20050114 when the behavior
10999 Store() was modified to restrict the object types that can be used as the
11000 source operand (to match the ACPI specification.)
11002 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
11004 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
11006 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
11008 Code and Data Size: Current and previous core subsystem library sizes are
11009 shown below. These are the code and data sizes for the acpica.lib
11011 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11012 any ACPI driver or OSPM code. The debug version of the code includes the
11013 debug output trace mechanism and has a much larger code and data size.
11015 that these values will vary depending on the efficiency of the compiler
11017 the compiler options used during generation.
11020 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11021 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11023 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11024 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
11027 2) iASL Compiler/Disassembler:
11029 Fixed a code generation problem in the constant folding optimization code
11030 where incorrect code was generated if a constant was reduced to a buffer
11031 object (i.e., a reduced type 5 opcode.)
11033 Fixed a typechecking problem for the ToBuffer operator. Caused by an
11034 incorrect return type in the internal opcode information table.
11036 ----------------------------------------
11037 25 January 2005. Summary of changes for version 20050125:
11039 1) ACPI CA Core Subsystem:
11041 Fixed a recently introduced problem with the Global Lock where the
11042 underlying semaphore was not created. This problem was introduced in
11043 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
11044 Acquire() operation on _GL.
11046 The local object cache is now optional, and is disabled by default. Both
11047 AcpiExec and the iASL compiler enable the cache because they run in user
11048 mode and this enhances their performance. #define
11049 ACPI_ENABLE_OBJECT_CACHE
11050 to enable the local cache.
11052 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
11054 optional "implicit return" support where an error was returned if no
11056 object was expected, but one was implicitly returned. AE_OK is now
11058 in this case and the implicitly returned object is deleted.
11059 AcpiUtEvaluateObject is only occasionally used, and only to execute
11061 methods such as _STA and _INI where the return type is known up front.
11063 Fixed a few issues with the internal convert-to-integer code. It now
11065 an error if an attempt is made to convert a null string, a string of only
11066 blanks/tabs, or a zero-length buffer. This affects both implicit
11068 and explicit conversion via the ToInteger() operator.
11070 The internal debug code in AcpiUtAcquireMutex has been commented out. It
11072 not needed for normal operation and should increase the performance of
11074 entire subsystem. The code remains in case it is needed for debug
11078 The AcpiExec source and makefile are included in the Unix/Linux package
11082 Code and Data Size: Current and previous core subsystem library sizes are
11083 shown below. These are the code and data sizes for the acpica.lib
11085 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11086 any ACPI driver or OSPM code. The debug version of the code includes the
11087 debug output trace mechanism and has a much larger code and data size.
11089 that these values will vary depending on the efficiency of the compiler
11091 the compiler options used during generation.
11094 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11095 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11097 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
11098 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
11100 2) iASL Compiler/Disassembler:
11102 Switch/Case support: A warning is now issued if the type of the Switch
11104 cannot be determined at compile time. For example, Switch(Arg0) will
11105 generate the warning, and the type is assumed to be an integer. As per
11107 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
11111 Switch/Case support: Implemented support for buffer and string objects as
11112 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
11113 buffers and strings.
11115 Switch/Case support: The emitted code for the LEqual() comparisons now
11117 the switch value as the first operand, not the second. The case value is
11119 the second operand, and this allows the case value to be implicitly
11120 converted to the type of the switch value, not the other way around.
11122 Switch/Case support: Temporary variables are now emitted immediately
11124 the control method, not at the global level. This means that there are
11126 36 temps available per-method, not 36 temps per-module as was the case
11128 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
11130 ----------------------------------------
11131 14 January 2005. Summary of changes for version 20050114:
11133 Added 2005 copyright to all module headers. This affects every module in
11134 the core subsystem, iASL compiler, and the utilities.
11136 1) ACPI CA Core Subsystem:
11138 Fixed an issue with the String-to-Buffer conversion code where the string
11139 null terminator was not included in the buffer after conversion, but
11141 is existing ASL that assumes the string null terminator is included. This
11143 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
11144 introduced in the previous version when the code was updated to correctly
11145 set the converted buffer size as per the ACPI specification. The ACPI
11147 is ambiguous and will be updated to specify that the null terminator must
11149 included in the converted buffer. This also affects the ToBuffer() ASL
11152 Fixed a problem with the Mid() ASL/AML operator where it did not work
11153 correctly on Buffer objects. Newly created sub-buffers were not being
11158 Fixed a problem in AcpiTbFindTable where incorrect string compares were
11159 performed on the OemId and OemTableId table header fields. These fields
11161 not null terminated, so strncmp is now used instead of strcmp.
11163 Implemented a restriction on the Store() ASL/AML operator to align the
11164 behavior with the ACPI specification. Previously, any object could be
11166 as the source operand. Now, the only objects that may be used are
11168 Buffers, Strings, Packages, Object References, and DDB Handles. If
11169 necessary, the original behavior can be restored by enabling the
11170 EnableInterpreterSlack flag.
11172 Enhanced the optional "implicit return" support to allow an implicit
11174 value from methods that are invoked externally via the AcpiEvaluateObject
11175 interface. This enables implicit returns from the _STA and _INI methods,
11178 Changed the Revision() ASL/AML operator to return the current version of
11180 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
11182 the supported ACPI version (This is the function of the _REV method).
11184 Updated the _REV predefined method to return the currently supported
11188 Implemented batch mode option for the AcpiExec utility (-b).
11190 Code and Data Size: Current and previous core subsystem library sizes are
11191 shown below. These are the code and data sizes for the acpica.lib
11193 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11194 any ACPI driver or OSPM code. The debug version of the code includes the
11195 debug output trace mechanism and has a much larger code and data size.
11197 that these values will vary depending on the efficiency of the compiler
11199 the compiler options used during generation.
11202 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11203 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11205 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
11206 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
11208 ----------------------------------------
11209 10 December 2004. Summary of changes for version 20041210:
11211 ACPI 3.0 support is nearing completion in both the iASL compiler and the
11212 ACPI CA core subsystem.
11214 1) ACPI CA Core Subsystem:
11216 Fixed a problem in the ToDecimalString operator where the resulting
11218 length was incorrectly calculated. The length is now calculated exactly,
11219 eliminating incorrect AE_STRING_LIMIT exceptions.
11221 Fixed a problem in the ToHexString operator to allow a maximum 200
11223 string to be produced.
11225 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
11227 routine where the length of the resulting buffer was not truncated to the
11228 new size (if the target buffer already existed).
11230 Code and Data Size: Current and previous core subsystem library sizes are
11231 shown below. These are the code and data sizes for the acpica.lib
11233 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11234 any ACPI driver or OSPM code. The debug version of the code includes the
11235 debug output trace mechanism and has a much larger code and data size.
11237 that these values will vary depending on the efficiency of the compiler
11239 the compiler options used during generation.
11242 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11243 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11245 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11246 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
11249 2) iASL Compiler/Disassembler:
11251 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
11252 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
11253 Includes support in the disassembler.
11255 Implemented support for the new (ACPI 3.0) parameter to the Register
11259 Fixed a problem where the _HE resource name for the Interrupt macro was
11260 referencing bit 0 instead of bit 1.
11262 Implemented check for maximum 255 interrupts in the Interrupt macro.
11264 Fixed a problem with the predefined resource descriptor names where
11265 incorrect AML code was generated if the offset within the resource buffer
11266 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
11267 but did not update the surrounding package lengths.
11269 Changes to the Dma macro: All channels within the channel list must be
11271 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
11272 optional (default is BusMaster).
11274 Implemented check for maximum 7 data bytes for the VendorShort macro.
11276 The ReadWrite parameter is now optional for the Memory32 and similar
11279 ----------------------------------------
11280 03 December 2004. Summary of changes for version 20041203:
11282 1) ACPI CA Core Subsystem:
11284 The low-level field insertion/extraction code (exfldio) has been
11286 rewritten to eliminate unnecessary complexity, bugs, and boundary
11289 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
11291 operators where the input operand could be inadvertently deleted if no
11292 conversion was necessary (e.g., if the input to ToInteger was an Integer
11295 Fixed a problem with the ToDecimalString and ToHexString where an
11297 exception code was returned if the resulting string would be > 200 chars.
11298 AE_STRING_LIMIT is now returned.
11300 Fixed a problem with the Concatenate operator where AE_OK was always
11301 returned, even if the operation failed.
11303 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
11304 semaphores to be allocated.
11306 Code and Data Size: Current and previous core subsystem library sizes are
11307 shown below. These are the code and data sizes for the acpica.lib
11309 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11310 any ACPI driver or OSPM code. The debug version of the code includes the
11311 debug output trace mechanism and has a much larger code and data size.
11313 that these values will vary depending on the efficiency of the compiler
11315 the compiler options used during generation.
11318 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11319 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11321 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11322 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
11325 2) iASL Compiler/Disassembler:
11327 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
11328 recently introduced in 20041119.
11330 Fixed a problem with the ToUUID macro where the upper nybble of each
11332 byte was inadvertently set to zero.
11334 ----------------------------------------
11335 19 November 2004. Summary of changes for version 20041119:
11337 1) ACPI CA Core Subsystem:
11339 Fixed a problem in the internal ConvertToInteger routine where new
11341 were not truncated to 32 bits for 32-bit ACPI tables. This routine
11343 buffers and strings to integers.
11345 Implemented support to store a value to an Index() on a String object.
11347 is an ACPI 2.0 feature that had not yet been implemented.
11349 Implemented new behavior for storing objects to individual package
11351 (via the Index() operator). The previous behavior was to invoke the
11353 conversion rules if an object was already present at the index. The new
11354 behavior is to simply delete any existing object and directly store the
11356 object. Although the ACPI specification seems unclear on this subject,
11358 ACPI implementations behave in this manner. (This is the root of the
11359 AE_BAD_HEX_CONSTANT issue.)
11361 Modified the RSDP memory scan mechanism to support the extended checksum
11363 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
11364 RSDP signature is found with a valid checksum.
11366 Code and Data Size: Current and previous core subsystem library sizes are
11367 shown below. These are the code and data sizes for the acpica.lib
11369 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11370 any ACPI driver or OSPM code. The debug version of the code includes the
11371 debug output trace mechanism and has a much larger code and data size.
11373 that these values will vary depending on the efficiency of the compiler
11375 the compiler options used during generation.
11378 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11379 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11381 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11382 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11385 2) iASL Compiler/Disassembler:
11387 Fixed a missing semicolon in the aslcompiler.y file.
11389 ----------------------------------------
11390 05 November 2004. Summary of changes for version 20041105:
11392 1) ACPI CA Core Subsystem:
11394 Implemented support for FADT revision 2. This was an interim table
11396 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
11398 Implemented optional support to allow uninitialized LocalX and ArgX
11399 variables in a control method. The variables are initialized to an
11401 object with a value of zero. This support is enabled by setting the
11402 AcpiGbl_EnableInterpreterSlack flag to TRUE.
11404 Implemented support for Integer objects for the SizeOf operator. Either
11406 or 8 is returned, depending on the current integer size (32-bit or 64-
11408 depending on the parent table revision).
11410 Fixed a problem in the implementation of the SizeOf and ObjectType
11412 where the operand was resolved to a value too early, causing incorrect
11413 return values for some objects.
11415 Fixed some possible memory leaks during exceptional conditions.
11417 Code and Data Size: Current and previous core subsystem library sizes are
11418 shown below. These are the code and data sizes for the acpica.lib
11420 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11421 any ACPI driver or OSPM code. The debug version of the code includes the
11422 debug output trace mechanism and has a much larger code and data size.
11424 that these values will vary depending on the efficiency of the compiler
11426 the compiler options used during generation.
11429 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11430 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11432 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
11433 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
11436 2) iASL Compiler/Disassembler:
11438 Implemented support for all ACPI 3.0 reserved names and methods.
11440 Implemented all ACPI 3.0 grammar elements in the front-end, including
11441 support for semicolons.
11443 Implemented the ACPI 3.0 Function() and ToUUID() macros
11445 Fixed a problem in the disassembler where a Scope() operator would not be
11446 emitted properly if the target of the scope was in another table.
11448 ----------------------------------------
11449 15 October 2004. Summary of changes for version 20041015:
11451 Note: ACPI CA is currently undergoing an in-depth and complete formal
11452 evaluation to test/verify the following areas. Other suggestions are
11453 welcome. This will result in an increase in the frequency of releases and
11454 the number of bug fixes in the next few months.
11455 - Functional tests for all ASL/AML operators
11456 - All implicit/explicit type conversions
11457 - Bit fields and operation regions
11458 - 64-bit math support and 32-bit-only "truncated" math support
11459 - Exceptional conditions, both compiler and interpreter
11460 - Dynamic object deletion and memory leaks
11461 - ACPI 3.0 support when implemented
11462 - External interfaces to the ACPI subsystem
11465 1) ACPI CA Core Subsystem:
11467 Fixed two alignment issues on 64-bit platforms - within debug statements
11469 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
11471 field within the non-aligned ACPI generic address structure.
11473 Fixed a problem in the Increment and Decrement operators where incorrect
11474 operand resolution could result in the inadvertent modification of the
11475 original integer when the integer is passed into another method as an
11476 argument and the arg is then incremented/decremented.
11478 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
11480 BCD number were truncated during conversion.
11482 Fixed a problem in the ToDecimal operator where the length of the
11484 string could be set incorrectly too long if the input operand was a
11488 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
11490 within a buffer would prematurely terminate a compare between buffer
11493 Added a check for string overflow (>200 characters as per the ACPI
11494 specification) during the Concatenate operator with two string operands.
11496 Code and Data Size: Current and previous core subsystem library sizes are
11497 shown below. These are the code and data sizes for the acpica.lib
11499 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11500 any ACPI driver or OSPM code. The debug version of the code includes the
11501 debug output trace mechanism and has a much larger code and data size.
11503 that these values will vary depending on the efficiency of the compiler
11505 the compiler options used during generation.
11508 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11509 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11511 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11512 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
11516 2) iASL Compiler/Disassembler:
11518 Allow the use of the ObjectType operator on uninitialized Locals and Args
11519 (returns 0 as per the ACPI specification).
11521 Fixed a problem where the compiler would fault if there was a syntax
11523 in the FieldName of all of the various CreateXXXField operators.
11525 Disallow the use of lower case letters within the EISAID macro, as per
11527 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
11529 U is an uppercase letter and N is a hex digit.
11532 ----------------------------------------
11533 06 October 2004. Summary of changes for version 20041006:
11535 1) ACPI CA Core Subsystem:
11537 Implemented support for the ACPI 3.0 Timer operator. This ASL function
11538 implements a 64-bit timer with 100 nanosecond granularity.
11540 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
11541 implement the ACPI 3.0 Timer operator. This allows the host OS to
11543 the timer with the best clock available. Also, it keeps the core
11545 out of the clock handling business, since the host OS (usually) performs
11548 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
11549 functions use a 64-bit address which is part of the packed ACPI Generic
11550 Address Structure. Since the structure is non-aligned, the alignment
11552 are now used to extract the address to a local variable before use.
11554 Fixed a problem where the ToInteger operator assumed all input strings
11556 hexadecimal. The operator now handles both decimal strings and hex
11558 (prefixed with "0x").
11560 Fixed a problem where the string length in the string object created as a
11561 result of the internal ConvertToString procedure could be incorrect. This
11562 potentially affected all implicit conversions and also the
11564 and ToHexString operators.
11566 Fixed two problems in the ToString operator. If the length parameter was
11567 zero, an incorrect string object was created and the value of the input
11568 length parameter was inadvertently changed from zero to Ones.
11570 Fixed a problem where the optional ResourceSource string in the
11572 resource macro was ignored.
11574 Simplified the interfaces to the internal division functions, reducing
11576 size and complexity.
11578 Code and Data Size: Current and previous core subsystem library sizes are
11579 shown below. These are the code and data sizes for the acpica.lib
11581 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11582 any ACPI driver or OSPM code. The debug version of the code includes the
11583 debug output trace mechanism and has a much larger code and data size.
11585 that these values will vary depending on the efficiency of the compiler
11587 the compiler options used during generation.
11590 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11591 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11593 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11594 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
11597 2) iASL Compiler/Disassembler:
11599 Implemented support for the ACPI 3.0 Timer operator.
11601 Fixed a problem where the Default() operator was inadvertently ignored in
11603 Switch/Case block. This was a problem in the translation of the Switch
11604 statement to If...Else pairs.
11606 Added support to allow a standalone Return operator, with no parentheses
11610 Fixed a problem with code generation for the ElseIf operator where the
11611 translated Else...If parse tree was improperly constructed leading to the
11614 ----------------------------------------
11615 22 September 2004. Summary of changes for version 20040922:
11617 1) ACPI CA Core Subsystem:
11619 Fixed a problem with the implementation of the LNot() operator where
11621 was not returned for the TRUE case. Changed the code to return Ones
11623 of (!Arg) which was usually 1. This change affects iASL constant folding
11625 this operator also.
11627 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
11629 initialized properly -- Now zero the entire buffer in this case where the
11630 buffer already exists.
11632 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
11633 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
11634 related code considerably. This will require changes/updates to all OS
11635 interface layers (OSLs.)
11637 Implemented a new external interface, AcpiInstallExceptionHandler, to
11639 a system exception handler to be installed. This handler is invoked upon
11641 run-time exception that occurs during control method execution.
11643 Added support for the DSDT in AcpiTbFindTable. This allows the
11644 DataTableRegion() operator to access the local copy of the DSDT.
11646 Code and Data Size: Current and previous core subsystem library sizes are
11647 shown below. These are the code and data sizes for the acpica.lib
11649 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11650 any ACPI driver or OSPM code. The debug version of the code includes the
11651 debug output trace mechanism and has a much larger code and data size.
11653 that these values will vary depending on the efficiency of the compiler
11655 the compiler options used during generation.
11658 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
11659 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
11661 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
11662 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
11665 2) iASL Compiler/Disassembler:
11667 Fixed a problem with constant folding and the LNot operator. LNot was
11668 returning 1 in the TRUE case, not Ones as per the ACPI specification.
11670 could result in the generation of an incorrect folded/reduced constant.
11672 End-Of-File is now allowed within a "//"-style comment. A parse error no
11673 longer occurs if such a comment is at the very end of the input ASL
11677 Implemented the "-r" option to override the Revision in the table header.
11678 The initial use of this option will be to simplify the evaluation of the
11680 interpreter by allowing a single ASL source module to be compiled for
11682 32-bit or 64-bit integers.
11685 ----------------------------------------
11686 27 August 2004. Summary of changes for version 20040827:
11688 1) ACPI CA Core Subsystem:
11690 - Implemented support for implicit object conversion in the non-numeric
11691 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
11693 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
11694 the second operand is implicitly converted on the fly to match the type
11696 the first operand. For example:
11698 LEqual (Source1, Source2)
11700 Source1 and Source2 must each evaluate to an integer, a string, or a
11702 The data type of Source1 dictates the required type of Source2. Source2
11704 implicitly converted if necessary to match the type of Source1.
11706 - Updated and corrected the behavior of the string conversion support.
11708 rules concerning conversion of buffers to strings (according to the ACPI
11709 specification) are as follows:
11711 ToDecimalString - explicit byte-wise conversion of buffer to string of
11712 decimal values (0-255) separated by commas. ToHexString - explicit byte-
11714 conversion of buffer to string of hex values (0-FF) separated by commas.
11715 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
11717 copy with no transform except NULL terminated. Any other implicit buffer-
11719 string conversion - byte-wise conversion of buffer to string of hex
11721 (0-FF) separated by spaces.
11723 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
11725 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
11727 one byte too short in the case of a node in the root scope. This could
11728 cause a fault during debug output.
11730 - Code and Data Size: Current and previous core subsystem library sizes
11732 shown below. These are the code and data sizes for the acpica.lib
11734 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11735 any ACPI driver or OSPM code. The debug version of the code includes the
11736 debug output trace mechanism and has a much larger code and data size.
11738 that these values will vary depending on the efficiency of the compiler
11740 the compiler options used during generation.
11743 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11744 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11746 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
11747 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
11750 2) iASL Compiler/Disassembler:
11752 - Fixed a Linux generation error.
11755 ----------------------------------------
11756 16 August 2004. Summary of changes for version 20040816:
11758 1) ACPI CA Core Subsystem:
11760 Designed and implemented support within the AML interpreter for the so-
11761 called "implicit return". This support returns the result of the last
11763 operation within a control method, in the absence of an explicit Return()
11764 operator. A few machines depend on this behavior, even though it is not
11765 explicitly supported by the ASL language. It is optional support that
11767 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
11769 Removed support for the PCI_Config address space from the internal low
11771 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
11772 support was not used internally, and would not work correctly anyway
11774 the PCI bus number and segment number were not supported. There are
11775 separate interfaces for PCI configuration space access because of the
11779 Code and Data Size: Current and previous core subsystem library sizes are
11780 shown below. These are the code and data sizes for the acpica.lib
11782 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11783 any ACPI driver or OSPM code. The debug version of the code includes the
11784 debug output trace mechanism and has a much larger code and data size.
11786 that these values will vary depending on the efficiency of the compiler
11788 the compiler options used during generation.
11791 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11792 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11794 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11795 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11798 2) iASL Compiler/Disassembler:
11800 Fixed a problem where constants in ASL expressions at the root level (not
11801 within a control method) could be inadvertently truncated during code
11802 generation. This problem was introduced in the 20040715 release.
11805 ----------------------------------------
11806 15 July 2004. Summary of changes for version 20040715:
11808 1) ACPI CA Core Subsystem:
11810 Restructured the internal HW GPE interfaces to pass/track the current
11812 of interrupts (enabled/disabled) in order to avoid possible deadlock and
11813 increase flexibility of the interfaces.
11815 Implemented a "lexicographical compare" for String and Buffer objects
11817 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
11819 as per further clarification to the ACPI specification. Behavior is
11821 to C library "strcmp".
11823 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
11824 external function. In the 32-bit non-debug case, the stack use has been
11825 reduced from 168 bytes to 32 bytes.
11827 Deployed a new run-time configuration flag,
11828 AcpiGbl_EnableInterpreterSlack,
11829 whose purpose is to allow the AML interpreter to forgive certain bad AML
11830 constructs. Default setting is FALSE.
11832 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
11834 support code. If enabled, it allows field access to go beyond the end of
11836 region definition if the field is within the region length rounded up to
11838 next access width boundary (a common coding error.)
11840 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
11841 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
11843 symbols are lowercased by the latest version of the AcpiSrc tool.
11845 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
11846 rename "Register" to simply "Reg" to prevent certain compilers from
11849 Code and Data Size: Current and previous core subsystem library sizes are
11850 shown below. These are the code and data sizes for the acpica.lib
11852 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11853 any ACPI driver or OSPM code. The debug version of the code includes the
11854 debug output trace mechanism and has a much larger code and data size.
11856 that these values will vary depending on the efficiency of the compiler
11858 the compiler options used during generation.
11861 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11862 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11864 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11865 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11868 2) iASL Compiler/Disassembler:
11870 Implemented full support for Package objects within the Case() operator.
11871 Note: The Break() operator is currently not supported within Case blocks
11872 (TermLists) as there is some question about backward compatibility with
11877 Fixed a problem where complex terms were not supported properly within
11881 Eliminated extraneous warning for compiler-emitted reserved names of the
11882 form "_T_x". (Used in Switch/Case operators.)
11884 Eliminated optimization messages for "_T_x" objects and small constants
11885 within the DefinitionBlock operator.
11888 ----------------------------------------
11889 15 June 2004. Summary of changes for version 20040615:
11891 1) ACPI CA Core Subsystem:
11893 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11895 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11898 All directory names in the entire source package are lower case, as they
11899 were in earlier releases.
11901 Implemented "Disassemble" command in the AML debugger that will
11903 a single control method.
11905 Code and Data Size: Current and previous core subsystem library sizes are
11906 shown below. These are the code and data sizes for the acpica.lib
11908 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11909 any ACPI driver or OSPM code. The debug version of the code includes the
11910 debug output trace mechanism and has a much larger code and data size.
11912 that these values will vary depending on the efficiency of the compiler
11914 the compiler options used during generation.
11917 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11918 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11921 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11922 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11925 2) iASL Compiler/Disassembler:
11927 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11929 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11932 All directory names in the entire source package are lower case, as they
11933 were in earlier releases.
11935 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
11938 Fixed an issue with the Windows version of the compiler where later
11940 of Windows place the FADT in the registry under the name "FADT" and not
11941 "FACP" as earlier versions did. This applies when using the -g or -
11942 d<nofilename> options. The compiler now looks for both strings as
11945 Fixed a problem with compiler namepath optimization where a namepath
11947 the Scope() operator could not be optimized if the namepath was a subpath
11949 the current scope path.
11951 ----------------------------------------
11952 27 May 2004. Summary of changes for version 20040527:
11954 1) ACPI CA Core Subsystem:
11956 Completed a new design and implementation for EBDA (Extended BIOS Data
11958 support in the RSDP scan code. The original code improperly scanned for
11960 EBDA by simply scanning from memory location 0 to 0x400. The correct
11962 is to first obtain the EBDA pointer from within the BIOS data area, then
11963 scan 1K of memory starting at the EBDA pointer. There appear to be few
11965 any machines that place the RSDP in the EBDA, however.
11967 Integrated a fix for a possible fault during evaluation of BufferField
11968 arguments. Obsolete code that was causing the problem was removed.
11970 Found and fixed a problem in the Field Support Code where data could be
11971 corrupted on a bit field read that starts on an aligned boundary but does
11972 not end on an aligned boundary. Merged the read/write "datum length"
11973 calculation code into a common procedure.
11975 Rolled in a couple of changes to the FreeBSD-specific header.
11978 Code and Data Size: Current and previous core subsystem library sizes are
11979 shown below. These are the code and data sizes for the acpica.lib
11981 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11982 any ACPI driver or OSPM code. The debug version of the code includes the
11983 debug output trace mechanism and has a much larger code and data size.
11985 that these values will vary depending on the efficiency of the compiler
11987 the compiler options used during generation.
11990 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11991 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11993 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11994 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11997 2) iASL Compiler/Disassembler:
11999 Fixed a generation warning produced by some overly-verbose compilers for
12003 ----------------------------------------
12004 14 May 2004. Summary of changes for version 20040514:
12006 1) ACPI CA Core Subsystem:
12008 Fixed a problem where hardware GPE enable bits sometimes not set properly
12009 during and after GPE method execution. Result of 04/27 changes.
12011 Removed extra "clear all GPEs" when sleeping/waking.
12013 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
12014 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
12016 the new AcpiEv* calls as appropriate.
12018 ACPI_OS_NAME was removed from the OS-specific headers. The default name
12020 now "Microsoft Windows NT" for maximum compatibility. However this can
12022 changed by modifying the acconfig.h file.
12024 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
12025 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
12027 Run _INI methods on ThermalZone objects. This is against the ACPI
12028 specification, but there is apparently ASL code in the field that has
12030 _INI methods, and apparently "other" AML interpreters execute them.
12032 Performed a full 16/32/64 bit lint that resulted in some small changes.
12034 Added a sleep simulation command to the AML debugger to test sleep code.
12036 Code and Data Size: Current and previous core subsystem library sizes are
12037 shown below. These are the code and data sizes for the acpica.lib
12039 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12040 any ACPI driver or OSPM code. The debug version of the code includes the
12041 debug output trace mechanism and has a much larger code and data size.
12043 that these values will vary depending on the efficiency of the compiler
12045 the compiler options used during generation.
12048 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12049 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12051 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12052 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
12054 ----------------------------------------
12055 27 April 2004. Summary of changes for version 20040427:
12057 1) ACPI CA Core Subsystem:
12059 Completed a major overhaul of the GPE handling within ACPI CA. There are
12060 now three types of GPEs: wake-only, runtime-only, and combination
12062 The only GPEs allowed to be combination wake/run are for button-style
12063 devices such as a control-method power button, control-method sleep
12065 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
12067 referenced by any _PRW methods are marked for "runtime" and hardware
12068 enabled. Any GPE that is referenced by a _PRW method is marked for
12070 (and disabled at runtime). However, at sleep time, only those GPEs that
12071 have been specifically enabled for wake via the AcpiEnableGpe interface
12073 actually be hardware enabled.
12075 A new external interface has been added, AcpiSetGpeType(), that is meant
12077 be used by device drivers to force a GPE to a particular type. It will
12079 especially useful for the drivers for the button devices mentioned above.
12081 Completed restructuring of the ACPI CA initialization sequence so that
12082 default operation region handlers are installed before GPEs are
12084 and the _PRW methods are executed. This will prevent errors when the
12086 methods attempt to access system memory or I/O space.
12088 GPE enable/disable no longer reads the GPE enable register. We now keep
12090 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
12091 thus no longer depend on the hardware to maintain these bits.
12093 Always clear the wake status and fixed/GPE status bits before sleep, even
12096 Improved the AML debugger output for displaying the GPE blocks and their
12099 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
12103 Fixed a problem where the physical address was incorrectly calculated
12105 the Load() operator was used to directly load from an Operation Region
12107 loading from a Field object.) Also added check for minimum table length
12111 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
12114 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
12115 consistency with the other fields returned.
12117 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
12118 structure for each GPE in the system, so the size of this structure is
12121 CPU stack requirement reduction: Cleaned up the method execution and
12123 evaluation paths so that now a parameter structure is passed, instead of
12124 copying the various method parameters over and over again.
12126 In evregion.c: Correctly exit and reenter the interpreter region if and
12127 only if dispatching an operation region request to a user-installed
12129 Do not exit/reenter when dispatching to a default handler (e.g., default
12130 system memory or I/O handlers)
12133 Notes for updating drivers for the new GPE support. The following
12135 must be made to ACPI-related device drivers that are attached to one or
12137 GPEs: (This information will be added to the ACPI CA Programmer
12140 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
12142 explicitly call AcpiEnableGpe.
12143 2) There is a new interface called AcpiSetGpeType. This should be called
12144 before enabling the GPE. Also, this interface will automatically disable
12145 the GPE if it is currently enabled.
12146 3) AcpiEnableGpe no longer supports a GPE type flag.
12148 Specific drivers that must be changed:
12150 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
12151 AeGpeHandler, NULL);
12152 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
12153 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
12155 2) Button Drivers (Power, Lid, Sleep):
12156 Run _PRW method under parent device
12157 If _PRW exists: /* This is a control-method button */
12158 Extract GPE number and possibly GpeDevice
12159 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
12160 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
12162 For all other devices that have _PRWs, we automatically set the GPE type
12164 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
12166 must be done on a selective basis, usually requiring some kind of user
12168 to allow the user to pick the wake devices.
12171 Code and Data Size: Current and previous core subsystem library sizes are
12172 shown below. These are the code and data sizes for the acpica.lib
12174 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12175 any ACPI driver or OSPM code. The debug version of the code includes the
12176 debug output trace mechanism and has a much larger code and data size.
12178 that these values will vary depending on the efficiency of the compiler
12180 the compiler options used during generation.
12183 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12184 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12187 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
12188 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
12192 ----------------------------------------
12193 02 April 2004. Summary of changes for version 20040402:
12195 1) ACPI CA Core Subsystem:
12197 Fixed an interpreter problem where an indirect store through an ArgX
12198 parameter was incorrectly applying the "implicit conversion rules" during
12199 the store. From the ACPI specification: "If the target is a method local
12201 argument (LocalX or ArgX), no conversion is performed and the result is
12202 stored directly to the target". The new behavior is to disable implicit
12203 conversion during ALL stores to an ArgX.
12205 Changed the behavior of the _PRW method scan to ignore any and all errors
12206 returned by a given _PRW. This prevents the scan from aborting from the
12207 failure of any single _PRW.
12209 Moved the runtime configuration parameters from the global init procedure
12211 static variables in acglobal.h. This will allow the host to override the
12212 default values easily.
12214 Code and Data Size: Current and previous core subsystem library sizes are
12215 shown below. These are the code and data sizes for the acpica.lib
12217 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12218 any ACPI driver or OSPM code. The debug version of the code includes the
12219 debug output trace mechanism and has a much larger code and data size.
12221 that these values will vary depending on the efficiency of the compiler
12223 the compiler options used during generation.
12226 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12227 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12229 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
12230 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
12233 2) iASL Compiler/Disassembler:
12235 iASL now fully disassembles SSDTs. However, External() statements are
12237 generated automatically for unresolved symbols at this time. This is a
12238 planned feature for future implementation.
12240 Fixed a scoping problem in the disassembler that occurs when the type of
12242 target of a Scope() operator is overridden. This problem caused an
12243 incorrectly nested internal namespace to be constructed.
12245 Any warnings or errors that are emitted during disassembly are now
12247 out automatically so that the resulting file can be recompiled without
12251 ----------------------------------------
12252 26 March 2004. Summary of changes for version 20040326:
12254 1) ACPI CA Core Subsystem:
12256 Implemented support for "wake" GPEs via interaction between GPEs and the
12257 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
12258 identified as a WAKE GPE and by default will no longer be enabled at
12259 runtime. Previously, we were blindly enabling all GPEs with a
12261 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
12263 believe this has been the cause of thousands of "spurious" GPEs on some
12266 This new GPE behavior is can be reverted to the original behavior (enable
12267 ALL GPEs at runtime) via a runtime flag.
12269 Fixed a problem where aliased control methods could not access objects
12270 properly. The proper scope within the namespace was not initialized
12271 (transferred to the target of the aliased method) before executing the
12274 Fixed a potential race condition on internal object deletion on the
12276 object in AcpiEvaluateObject.
12278 Integrated a fix for resource descriptors where both _MEM and _MTP were
12279 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
12280 wide, 0x0F instead of 0x03.)
12282 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
12285 fault in some cases.
12287 Updated Notify() values for debug statements in evmisc.c
12289 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
12291 Code and Data Size: Current and previous core subsystem library sizes are
12292 shown below. These are the code and data sizes for the acpica.lib
12294 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12295 any ACPI driver or OSPM code. The debug version of the code includes the
12296 debug output trace mechanism and has a much larger code and data size.
12298 that these values will vary depending on the efficiency of the compiler
12300 the compiler options used during generation.
12304 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12305 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12307 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
12308 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
12310 ----------------------------------------
12311 11 March 2004. Summary of changes for version 20040311:
12313 1) ACPI CA Core Subsystem:
12315 Fixed a problem where errors occurring during the parse phase of control
12316 method execution did not abort cleanly. For example, objects created and
12317 installed in the namespace were not deleted. This caused all subsequent
12318 invocations of the method to return the AE_ALREADY_EXISTS exception.
12320 Implemented a mechanism to force a control method to "Serialized"
12322 if the method attempts to create namespace objects. (The root of the
12323 AE_ALREADY_EXISTS problem.)
12325 Implemented support for the predefined _OSI "internal" control method.
12326 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
12328 "Windows 2001.1", and can be easily upgraded for new strings as
12330 This feature will allow "other" operating systems to execute the fully
12331 tested, "Windows" code path through the ASL code
12333 Global Lock Support: Now allows multiple acquires and releases with any
12334 internal thread. Removed concept of "owning thread" for this special
12337 Fixed two functions that were inappropriately declaring large objects on
12339 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
12341 method execution considerably.
12343 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
12344 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
12346 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
12347 defined on the machine.
12349 Implemented two runtime options: One to force all control method
12351 to "Serialized" to mimic Windows behavior, another to disable _OSI
12353 if it causes problems on a given machine.
12355 Code and Data Size: Current and previous core subsystem library sizes are
12356 shown below. These are the code and data sizes for the acpica.lib
12358 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12359 any ACPI driver or OSPM code. The debug version of the code includes the
12360 debug output trace mechanism and has a much larger code and data size.
12362 that these values will vary depending on the efficiency of the compiler
12364 the compiler options used during generation.
12367 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12368 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12370 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
12371 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
12373 2) iASL Compiler/Disassembler:
12375 Fixed an array size problem for FreeBSD that would cause the compiler to
12378 ----------------------------------------
12379 20 February 2004. Summary of changes for version 20040220:
12382 1) ACPI CA Core Subsystem:
12384 Implemented execution of _SxD methods for Device objects in the
12385 GetObjectInfo interface.
12387 Fixed calls to _SST method to pass the correct arguments.
12389 Added a call to _SST on wake to restore to "working" state.
12391 Check for End-Of-Buffer failure case in the WalkResources interface.
12393 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
12394 structures to the beginning of the file.
12396 After wake, clear GPE status register(s) before enabling GPEs.
12398 After wake, clear/enable power button. (Perhaps we should clear/enable
12400 fixed events upon wake.)
12402 Fixed a couple of possible memory leaks in the Namespace manager.
12404 Integrated latest acnetbsd.h file.
12406 ----------------------------------------
12407 11 February 2004. Summary of changes for version 20040211:
12410 1) ACPI CA Core Subsystem:
12412 Completed investigation and implementation of the call-by-reference
12413 mechanism for control method arguments.
12415 Fixed a problem where a store of an object into an indexed package could
12416 fail if the store occurs within a different method than the method that
12417 created the package.
12419 Fixed a problem where the ToDecimal operator could return incorrect
12422 Fixed a problem where the CopyObject operator could fail on some of the
12424 obscure objects (e.g., Reference objects.)
12426 Improved the output of the Debug object to display buffer, package, and
12429 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
12431 the expected result.
12433 Added permanent ACPI_REPORT_ERROR macros for all instances of the
12434 ACPI_AML_INTERNAL exception.
12436 Integrated latest version of acfreebsd.h
12438 ----------------------------------------
12439 16 January 2004. Summary of changes for version 20040116:
12441 The purpose of this release is primarily to update the copyright years in
12442 each module, thus causing a huge number of diffs. There are a few small
12443 functional changes, however.
12445 1) ACPI CA Core Subsystem:
12447 Improved error messages when there is a problem finding one or more of
12449 required base ACPI tables
12451 Reintroduced the definition of APIC_HEADER in actbl.h
12453 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
12455 Removed extraneous reference to NewObj in dsmthdat.c
12459 Fixed a problem introduced in December that disabled the correct
12461 of Resource Templates
12464 ----------------------------------------
12465 03 December 2003. Summary of changes for version 20031203:
12467 1) ACPI CA Core Subsystem:
12469 Changed the initialization of Operation Regions during subsystem
12470 init to perform two entire walks of the ACPI namespace; The first
12471 to initialize the regions themselves, the second to execute the
12472 _REG methods. This fixed some interdependencies across _REG
12473 methods found on some machines.
12475 Fixed a problem where a Store(Local0, Local1) could simply update
12476 the object reference count, and not create a new copy of the
12477 object if the Local1 is uninitialized.
12479 Implemented support for the _SST reserved method during sleep
12482 Implemented support to clear the SLP_TYP and SLP_EN bits when
12483 waking up, this is apparently required by some machines.
12485 When sleeping, clear the wake status only if SleepState is not S5.
12487 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
12488 pointer arithmetic advanced a string pointer too far.
12490 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
12491 could be returned if the requested table has not been loaded.
12493 Within the support for IRQ resources, restructured the handling of
12494 the active and edge/level bits.
12496 Fixed a few problems in AcpiPsxExecute() where memory could be
12497 leaked under certain error conditions.
12499 Improved error messages for the cases where the ACPI mode could
12502 Code and Data Size: Current and previous core subsystem library
12503 sizes are shown below. These are the code and data sizes for the
12504 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12505 these values do not include any ACPI driver or OSPM code. The
12506 debug version of the code includes the debug output trace
12507 mechanism and has a much larger code and data size. Note that
12508 these values will vary depending on the efficiency of the compiler
12509 and the compiler options used during generation.
12511 Previous Release (20031029):
12512 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12513 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12515 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
12516 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
12518 2) iASL Compiler/Disassembler:
12520 Implemented a fix for the iASL disassembler where a bad index was
12521 generated. This was most noticeable on 64-bit platforms
12524 ----------------------------------------
12525 29 October 2003. Summary of changes for version 20031029:
12527 1) ACPI CA Core Subsystem:
12530 Fixed a problem where a level-triggered GPE with an associated
12531 _Lxx control method was incorrectly cleared twice.
12533 Fixed a problem with the Field support code where an access can
12534 occur beyond the end-of-region if the field is non-aligned but
12535 extends to the very end of the parent region (resulted in an
12536 AE_AML_REGION_LIMIT exception.)
12538 Fixed a problem with ACPI Fixed Events where an RT Clock handler
12539 would not get invoked on an RTC event. The RTC event bitmasks for
12540 the PM1 registers were not being initialized properly.
12542 Implemented support for executing _STA and _INI methods for
12543 Processor objects. Although this is currently not part of the
12544 ACPI specification, there is existing ASL code that depends on the
12545 init-time execution of these methods.
12547 Implemented and deployed a GetDescriptorName function to decode
12548 the various types of internal descriptors. Guards against null
12549 descriptors during debug output also.
12551 Implemented and deployed a GetNodeName function to extract the 4-
12552 character namespace node name. This function simplifies the debug
12553 and error output, as well as guarding against null pointers during
12556 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
12557 simplify the debug and error output of 64-bit integers. This
12558 macro replaces the HIDWORD and LODWORD macros for dumping these
12561 Updated the implementation of the Stall() operator to only call
12562 AcpiOsStall(), and also return an error if the operand is larger
12563 than 255. This preserves the required behavior of not
12564 relinquishing the processor, as would happen if AcpiOsSleep() was
12565 called for "long stalls".
12567 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
12568 initialized are now treated as NOOPs.
12570 Cleaned up a handful of warnings during 64-bit generation.
12572 Fixed a reported error where and incorrect GPE number was passed
12573 to the GPE dispatch handler. This value is only used for error
12574 output, however. Used this opportunity to clean up and streamline
12575 the GPE dispatch code.
12577 Code and Data Size: Current and previous core subsystem library
12578 sizes are shown below. These are the code and data sizes for the
12579 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12580 these values do not include any ACPI driver or OSPM code. The
12582 debug version of the code includes the debug output trace
12583 mechanism and has a much larger code and data size. Note that
12584 these values will vary depending on the efficiency of the compiler
12585 and the compiler options used during generation.
12587 Previous Release (20031002):
12588 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12589 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12591 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
12592 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
12595 2) iASL Compiler/Disassembler:
12597 Updated the iASL compiler to return an error if the operand to the
12598 Stall() operator is larger than 255.
12601 ----------------------------------------
12602 02 October 2003. Summary of changes for version 20031002:
12605 1) ACPI CA Core Subsystem:
12607 Fixed a problem with Index Fields where the index was not
12608 incremented for fields that require multiple writes to the
12609 index/data registers (Fields that are wider than the data
12612 Fixed a problem with all Field objects where a write could go
12613 beyond the end-of-field if the field was larger than the access
12614 granularity and therefore required multiple writes to complete the
12615 request. An extra write beyond the end of the field could happen
12618 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
12619 would incorrectly be returned if the width of the Data Register
12620 was larger than the specified field access width.
12622 Completed fixes for LoadTable() and Unload() and verified their
12623 operation. Implemented full support for the "DdbHandle" object
12624 throughout the ACPI CA subsystem.
12626 Implemented full support for the MADT and ECDT tables in the ACPI
12627 CA header files. Even though these tables are not directly
12628 consumed by ACPI CA, the header definitions are useful for ACPI
12631 Integrated resource descriptor fixes posted to the Linux ACPI
12632 list. This included checks for minimum descriptor length, and
12633 support for trailing NULL strings within descriptors that have
12634 optional string elements.
12636 Code and Data Size: Current and previous core subsystem library
12637 sizes are shown below. These are the code and data sizes for the
12638 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12639 these values do not include any ACPI driver or OSPM code. The
12640 debug version of the code includes the debug output trace
12641 mechanism and has a much larger code and data size. Note that
12642 these values will vary depending on the efficiency of the compiler
12643 and the compiler options used during generation.
12645 Previous Release (20030918):
12646 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12647 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12649 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
12650 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
12655 Implemented detection of non-ASCII characters within the input
12656 source ASL file. This catches attempts to compile binary (AML)
12657 files early in the compile, with an informative error message.
12659 Fixed a problem where the disassembler would fault if the output
12660 filename could not be generated or if the output file could not be
12663 ----------------------------------------
12664 18 September 2003. Summary of changes for version 20030918:
12667 1) ACPI CA Core Subsystem:
12669 Found and fixed a longstanding problem with the late execution of
12670 the various deferred AML opcodes (such as Operation Regions,
12671 Buffer Fields, Buffers, and Packages). If the name string
12672 specified for the name of the new object placed the object in a
12673 scope other than the current scope, the initialization/execution
12674 of the opcode failed. The solution to this problem was to
12675 implement a mechanism where the late execution of such opcodes
12676 does not attempt to lookup/create the name a second time in an
12677 incorrect scope. This fixes the "region size computed
12678 incorrectly" problem.
12680 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
12681 Global Lock AE_BAD_PARAMETER error.
12683 Fixed several 64-bit issues with prototypes, casting and data
12686 Removed duplicate prototype from acdisasm.h
12688 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
12690 Code and Data Size: Current and previous core subsystem library
12691 sizes are shown below. These are the code and data sizes for the
12692 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12693 these values do not include any ACPI driver or OSPM code. The
12694 debug version of the code includes the debug output trace
12695 mechanism and has a much larger code and data size. Note that
12696 these values will vary depending on the efficiency of the compiler
12697 and the compiler options used during generation.
12701 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12702 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12704 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12705 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12710 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
12711 correct sleep time in seconds.
12713 ----------------------------------------
12714 14 July 2003. Summary of changes for version 20030619:
12716 1) ACPI CA Core Subsystem:
12718 Parse SSDTs in order discovered, as opposed to reverse order
12721 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
12728 Dynamically allocate SDT list (suggested by Andi Kleen)
12730 proc function return value cleanups (Andi Kleen)
12732 Correctly handle NMI watchdog during long stalls (Andrew Morton)
12734 Make it so acpismp=force works (reported by Andrew Morton)
12737 ----------------------------------------
12738 19 June 2003. Summary of changes for version 20030619:
12740 1) ACPI CA Core Subsystem:
12742 Fix To/FromBCD, eliminating the need for an arch-specific #define.
12744 Do not acquire a semaphore in the S5 shutdown path.
12746 Fix ex_digits_needed for 0. (Takayoshi Kochi)
12748 Fix sleep/stall code reversal. (Andi Kleen)
12750 Revert a change having to do with control method calling
12755 acpiphp update (Takayoshi Kochi)
12757 Export acpi_disabled for sonypi (Stelian Pop)
12759 Mention acpismp=force in config help
12761 Re-add acpitable.c and acpismp=force. This improves backwards
12763 compatibility and also cleans up the code to a significant degree.
12765 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
12767 ----------------------------------------
12768 22 May 2003. Summary of changes for version 20030522:
12770 1) ACPI CA Core Subsystem:
12772 Found and fixed a reported problem where an AE_NOT_FOUND error
12773 occurred occasionally during _BST evaluation. This turned out to
12774 be an Owner ID allocation issue where a called method did not get
12775 a new ID assigned to it. Eventually, (after 64k calls), the Owner
12776 ID UINT16 would wraparound so that the ID would be the same as the
12777 caller's and the called method would delete the caller's
12780 Implemented extended error reporting for control methods that are
12781 aborted due to a run-time exception. Output includes the exact
12782 AML instruction that caused the method abort, a dump of the method
12783 locals and arguments at the time of the abort, and a trace of all
12784 nested control method calls.
12786 Modified the interpreter to allow the creation of buffers of zero
12787 length from the AML code. Implemented new code to ensure that no
12788 attempt is made to actually allocate a memory buffer (of length
12789 zero) - instead, a simple buffer object with a NULL buffer pointer
12790 and length zero is created. A warning is no longer issued when
12791 the AML attempts to create a zero-length buffer.
12793 Implemented a workaround for the "leading asterisk issue" in
12794 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
12795 asterisk is automatically removed if present in any HID, UID, or
12796 CID strings. The iASL compiler will still flag this asterisk as
12799 Implemented full support for _CID methods that return a package of
12800 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
12801 now additionally returns a device _CID list if present. This
12802 required a change to the external interface in order to pass an
12803 ACPI_BUFFER object as a parameter since the _CID list is of
12806 Fixed a problem with the new AE_SAME_HANDLER exception where
12807 handler initialization code did not know about this exception.
12809 Code and Data Size: Current and previous core subsystem library
12810 sizes are shown below. These are the code and data sizes for the
12811 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12812 these values do not include any ACPI driver or OSPM code. The
12813 debug version of the code includes the debug output trace
12814 mechanism and has a much larger code and data size. Note that
12815 these values will vary depending on the efficiency of the compiler
12816 and the compiler options used during generation.
12818 Previous Release (20030509):
12819 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12820 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12822 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12823 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12828 Fixed a bug in which we would reinitialize the ACPI interrupt
12829 after it was already working, thus disabling all ACPI and the IRQs
12830 for any other device sharing the interrupt. (Thanks to Stian
12833 Toshiba driver update (John Belmonte)
12835 Return only 0 or 1 for our interrupt handler status (Andrew
12841 Fixed a reported problem where multiple (nested) ElseIf()
12842 statements were not handled correctly by the compiler, resulting
12843 in incorrect warnings and incorrect AML code. This was a problem
12844 in both the ASL parser and the code generator.
12849 Added changes to existing interfaces, new exception codes, and new
12850 text concerning reference count object management versus garbage
12853 ----------------------------------------
12854 09 May 2003. Summary of changes for version 20030509.
12857 1) ACPI CA Core Subsystem:
12859 Changed the subsystem initialization sequence to hold off
12860 installation of address space handlers until the hardware has been
12861 initialized and the system has entered ACPI mode. This is because
12862 the installation of space handlers can cause _REG methods to be
12863 run. Previously, the _REG methods could potentially be run before
12864 ACPI mode was enabled.
12866 Fixed some memory leak issues related to address space handler and
12867 notify handler installation. There were some problems with the
12868 reference count mechanism caused by the fact that the handler
12869 objects are shared across several namespace objects.
12871 Fixed a reported problem where reference counts within the
12872 namespace were not properly updated when named objects created by
12873 method execution were deleted.
12875 Fixed a reported problem where multiple SSDTs caused a deletion
12876 issue during subsystem termination. Restructured the table data
12877 structures to simplify the linked lists and the related code.
12879 Fixed a problem where the table ID associated with secondary
12880 tables (SSDTs) was not being propagated into the namespace objects
12881 created by those tables. This would only present a problem for
12882 tables that are unloaded at run-time, however.
12884 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
12885 type as the length parameter (instead of UINT32).
12887 Solved a long-standing problem where an ALREADY_EXISTS error
12888 appears on various systems. This problem could happen when there
12889 are multiple PCI_Config operation regions under a single PCI root
12890 bus. This doesn't happen very frequently, but there are some
12891 systems that do this in the ASL.
12893 Fixed a reported problem where the internal DeleteNode function
12894 was incorrectly handling the case where a namespace node was the
12895 first in the parent's child list, and had additional peers (not
12896 the only child, but first in the list of children.)
12898 Code and Data Size: Current core subsystem library sizes are shown
12899 below. These are the code and data sizes for the acpica.lib
12900 produced by the Microsoft Visual C++ 6.0 compiler, and these
12901 values do not include any ACPI driver or OSPM code. The debug
12902 version of the code includes the debug output trace mechanism and
12903 has a much larger code and data size. Note that these values will
12904 vary depending on the efficiency of the compiler and the compiler
12905 options used during generation.
12908 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12909 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12911 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12912 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12917 Allow ":" in OS override string (Ducrot Bruno)
12919 Kobject fix (Greg KH)
12922 3 iASL Compiler/Disassembler:
12924 Fixed a problem in the generation of the C source code files (AML
12925 is emitted in C source statements for BIOS inclusion) where the
12926 Ascii dump that appears within a C comment at the end of each line
12927 could cause a compile time error if the AML sequence happens to
12928 have an open comment or close comment sequence embedded.
12931 ----------------------------------------
12932 24 April 2003. Summary of changes for version 20030424.
12935 1) ACPI CA Core Subsystem:
12937 Support for big-endian systems has been implemented. Most of the
12938 support has been invisibly added behind big-endian versions of the
12939 ACPI_MOVE_* macros.
12941 Fixed a problem in AcpiHwDisableGpeBlock() and
12942 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
12943 low level hardware write routine. The offset parameter was
12944 actually eliminated from the low level read/write routines because
12945 they had become obsolete.
12947 Fixed a problem where a handler object was deleted twice during
12948 the removal of a fixed event handler.
12953 A fix for SMP systems with link devices was contributed by
12957 (2.5) Return whether we handled the interrupt in our IRQ handler.
12958 (Linux ISRs no longer return void, so we can propagate the handler
12959 return value from the ACPI CA core back to the OS.)
12965 The ACPI CA Programmer Reference has been updated to reflect new
12966 interfaces and changes to existing interfaces.
12968 ----------------------------------------
12969 28 March 2003. Summary of changes for version 20030328.
12971 1) ACPI CA Core Subsystem:
12973 The GPE Block Device support has been completed. New interfaces
12974 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
12975 interfaces (enable, disable, clear, getstatus) have been split
12976 into separate interfaces for Fixed Events and General Purpose
12977 Events (GPEs) in order to support GPE Block Devices properly.
12979 Fixed a problem where the error message "Failed to acquire
12980 semaphore" would appear during operations on the embedded
12983 Code and Data Size: Current core subsystem library sizes are shown
12984 below. These are the code and data sizes for the acpica.lib
12985 produced by the Microsoft Visual C++ 6.0 compiler, and these
12986 values do not include any ACPI driver or OSPM code. The debug
12987 version of the code includes the debug output trace mechanism and
12988 has a much larger code and data size. Note that these values will
12989 vary depending on the efficiency of the compiler and the compiler
12990 options used during generation.
12993 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12994 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12996 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12997 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13000 ----------------------------------------
13001 28 February 2003. Summary of changes for version 20030228.
13004 1) ACPI CA Core Subsystem:
13006 The GPE handling and dispatch code has been completely overhauled
13007 in preparation for support of GPE Block Devices (ID ACPI0006).
13008 This affects internal data structures and code only; there should
13009 be no differences visible externally. One new file has been
13012 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
13013 fields that are used to determine the GPE block lengths. The
13014 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
13015 structures are ignored. This is per the ACPI specification but it
13016 isn't very clear. The full 256 Block 0/1 GPEs are now supported
13017 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
13019 In the SCI interrupt handler, removed the read of the PM1_CONTROL
13020 register to look at the SCI_EN bit. On some machines, this read
13021 causes an SMI event and greatly slows down SCI events. (This may
13022 in fact be the cause of slow battery status response on some
13025 Fixed a problem where a store of a NULL string to a package object
13026 could cause the premature deletion of the object. This was seen
13027 during execution of the battery _BIF method on some systems,
13028 resulting in no battery data being returned.
13030 Added AcpiWalkResources interface to simplify parsing of resource
13033 Code and Data Size: Current core subsystem library sizes are shown
13034 below. These are the code and data sizes for the acpica.lib
13035 produced by the Microsoft Visual C++ 6.0 compiler, and these
13036 values do not include any ACPI driver or OSPM code. The debug
13037 version of the code includes the debug output trace mechanism and
13038 has a much larger code and data size. Note that these values will
13039 vary depending on the efficiency of the compiler and the compiler
13040 options used during generation.
13043 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13044 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13046 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
13047 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
13052 S3 fixes (Ole Rohne)
13054 Update ACPI PHP driver with to use new acpi_walk_resource API
13057 Add S4BIOS support (Pavel Machek)
13059 Map in entire table before performing checksum (John Stultz)
13061 Expand the mem= cmdline to allow the specification of reserved and
13062 ACPI DATA blocks (Pavel Machek)
13064 Never use ACPI on VISWS
13066 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
13068 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
13069 causing us to think that some systems support C2 when they really
13072 Do not count processor objects for non-present CPUs (Thanks to
13078 Fixed a problem where ASL include files could not be found and
13081 Added support for the _PDC reserved name.
13084 ----------------------------------------
13085 22 January 2003. Summary of changes for version 20030122.
13088 1) ACPI CA Core Subsystem:
13090 Added a check for constructs of the form: Store (Local0, Local0)
13091 where Local0 is not initialized. Apparently, some BIOS
13092 programmers believe that this is a NOOP. Since this store doesn't
13093 do anything anyway, the new prototype behavior will ignore this
13094 error. This is a case where we can relax the strict checking in
13095 the interpreter in the name of compatibility.
13100 The AcpiSrc Source Conversion Utility has been released with the
13101 Linux package for the first time. This is the utility that is
13102 used to convert the ACPI CA base source code to the Linux version.
13104 (Both) Handle P_BLK lengths shorter than 6 more gracefully
13106 (Both) Move more headers to include/acpi, and delete an unused
13109 (Both) Move drivers/acpi/include directory to include/acpi
13111 (Both) Boot functions don't use cmdline, so don't pass it around
13113 (Both) Remove include of unused header (Adrian Bunk)
13115 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
13117 former now also includes the latter, acpiphp.h only needs the one,
13120 (2.5) Make it possible to select method of bios restoring after S3
13121 resume. [=> no more ugly ifdefs] (Pavel Machek)
13123 (2.5) Make proc write interfaces work (Pavel Machek)
13125 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
13127 (2.5) Break out ACPI Perf code into its own module, under cpufreq
13128 (Dominik Brodowski)
13130 (2.4) S4BIOS support (Ducrot Bruno)
13132 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
13138 Added support to disassemble SSDT and PSDTs.
13140 Implemented support to obtain SSDTs from the Windows registry if
13144 ----------------------------------------
13145 09 January 2003. Summary of changes for version 20030109.
13147 1) ACPI CA Core Subsystem:
13149 Changed the behavior of the internal Buffer-to-String conversion
13150 function. The current ACPI specification states that the contents
13151 of the buffer are "converted to a string of two-character
13152 hexadecimal numbers, each separated by a space". Unfortunately,
13153 this definition is not backwards compatible with existing ACPI 1.0
13154 implementations (although the behavior was not defined in the ACPI
13155 1.0 specification). The new behavior simply copies data from the
13156 buffer to the string until a null character is found or the end of
13157 the buffer is reached. The new String object is always null
13158 terminated. This problem was seen during the generation of _BIF
13159 battery data where incorrect strings were returned for battery
13160 type, etc. This will also require an errata to the ACPI
13163 Renamed all instances of NATIVE_UINT and NATIVE_INT to
13164 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
13166 Copyright in all module headers (both Linux and non-Linux) has be
13169 Code and Data Size: Current core subsystem library sizes are shown
13170 below. These are the code and data sizes for the acpica.lib
13171 produced by the Microsoft Visual C++ 6.0 compiler, and these
13172 values do not include any ACPI driver or OSPM code. The debug
13173 version of the code includes the debug output trace mechanism and
13174 has a much larger code and data size. Note that these values will
13175 vary depending on the efficiency of the compiler and the compiler
13176 options used during generation.
13179 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13180 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13182 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13183 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13188 Fixed an oops on module insertion/removal (Matthew Tippett)
13190 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
13192 (2.5) Replace pr_debug (Randy Dunlap)
13194 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
13196 (Both) Eliminate spawning of thread from timer callback, in favor
13199 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
13201 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
13203 (Both) Add missing statics to button.c (Pavel Machek)
13205 Several changes have been made to the source code translation
13206 utility that generates the Linux Code in order to make the code
13209 All typedefs on structs and unions have been removed in keeping
13210 with the Linux coding style.
13212 Removed the non-Linux SourceSafe module revision number from each
13215 Completed major overhaul of symbols to be lowercased for linux.
13216 Doubled the number of symbols that are lowercased.
13218 Fixed a problem where identifiers within procedure headers and
13219 within quotes were not fully lower cased (they were left with a
13222 Some C macros whose only purpose is to allow the generation of 16-
13223 bit code are now completely removed in the Linux code, increasing
13224 readability and maintainability.
13226 ----------------------------------------
13228 12 December 2002. Summary of changes for version 20021212.
13231 1) ACPI CA Core Subsystem:
13233 Fixed a problem where the creation of a zero-length AML Buffer
13234 would cause a fault.
13236 Fixed a problem where a Buffer object that pointed to a static AML
13237 buffer (in an ACPI table) could inadvertently be deleted, causing
13240 Fixed a problem where a user buffer (passed in to the external
13241 ACPI CA interfaces) could be overwritten if the buffer was too
13242 small to complete the operation, causing memory corruption.
13244 Fixed a problem in the Buffer-to-String conversion code where a
13245 string of length one was always returned, regardless of the size
13246 of the input Buffer object.
13248 Removed the NATIVE_CHAR data type across the entire source due to
13249 lack of need and lack of consistent use.
13251 Code and Data Size: Current core subsystem library sizes are shown
13252 below. These are the code and data sizes for the acpica.lib
13253 produced by the Microsoft Visual C++ 6.0 compiler, and these
13254 values do not include any ACPI driver or OSPM code. The debug
13255 version of the code includes the debug output trace mechanism and
13256 has a much larger code and data size. Note that these values will
13257 vary depending on the efficiency of the compiler and the compiler
13258 options used during generation.
13261 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13262 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13264 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
13265 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
13268 ----------------------------------------
13269 05 December 2002. Summary of changes for version 20021205.
13271 1) ACPI CA Core Subsystem:
13273 Fixed a problem where a store to a String or Buffer object could
13274 cause corruption of the DSDT if the object type being stored was
13275 the same as the target object type and the length of the object
13276 being stored was equal to or smaller than the original (existing)
13277 target object. This was seen to cause corruption of battery _BIF
13278 buffers if the _BIF method modified the buffer on the fly.
13280 Fixed a problem where an internal error was generated if a control
13281 method invocation was used in an OperationRegion, Buffer, or
13282 Package declaration. This was caused by the deferred parsing of
13283 the control method and thus the deferred creation of the internal
13284 method object. The solution to this problem was to create the
13285 internal method object at the moment the method is encountered in
13286 the first pass - so that subsequent references to the method will
13287 able to obtain the required parameter count and thus properly
13288 parse the method invocation. This problem presented itself as an
13289 AE_AML_INTERNAL during the pass 1 parse phase during table load.
13291 Fixed a problem where the internal String object copy routine did
13292 not always allocate sufficient memory for the target String object
13293 and caused memory corruption. This problem was seen to cause
13294 "Allocation already present in list!" errors as memory allocation
13297 Implemented a new function for the evaluation of namespace objects
13298 that allows the specification of the allowable return object
13299 types. This simplifies a lot of code that checks for a return
13300 object of one or more specific objects returned from the
13301 evaluation (such as _STA, etc.) This may become and external
13302 function if it would be useful to ACPI-related drivers.
13304 Completed another round of prefixing #defines with "ACPI_" for
13307 Completed additional code restructuring to allow more modular
13308 linking for iASL compiler and AcpiExec. Several files were split
13309 creating new files. New files: nsparse.c dsinit.c evgpe.c
13311 Implemented an abort mechanism to terminate an executing control
13312 method via the AML debugger. This feature is useful for debugging
13313 control methods that depend (wait) for specific hardware
13316 Code and Data Size: Current core subsystem library sizes are shown
13317 below. These are the code and data sizes for the acpica.lib
13318 produced by the Microsoft Visual C++ 6.0 compiler, and these
13319 values do not include any ACPI driver or OSPM code. The debug
13320 version of the code includes the debug output trace mechanism and
13321 has a much larger code and data size. Note that these values will
13322 vary depending on the efficiency of the compiler and the compiler
13323 options used during generation.
13326 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13327 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13329 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
13330 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
13333 2) iASL Compiler/Disassembler
13335 Fixed a compiler code generation problem for "Interrupt" Resource
13336 Descriptors. If specified in the ASL, the optional "Resource
13337 Source Index" and "Resource Source" fields were not inserted into
13338 the correct location within the AML resource descriptor, creating
13339 an invalid descriptor.
13341 Fixed a disassembler problem for "Interrupt" resource descriptors.
13342 The optional "Resource Source Index" and "Resource Source" fields
13346 ----------------------------------------
13347 22 November 2002. Summary of changes for version 20021122.
13350 1) ACPI CA Core Subsystem:
13352 Fixed a reported problem where an object stored to a Method Local
13353 or Arg was not copied to a new object during the store - the
13354 object pointer was simply copied to the Local/Arg. This caused
13355 all subsequent operations on the Local/Arg to also affect the
13356 original source of the store operation.
13358 Fixed a problem where a store operation to a Method Local or Arg
13359 was not completed properly if the Local/Arg contained a reference
13360 (from RefOf) to a named field. The general-purpose store-to-
13361 namespace-node code is now used so that this case is handled
13364 Fixed a problem where the internal object copy routine would cause
13365 a protection fault if the object being copied was a Package and
13366 contained either 1) a NULL package element or 2) a nested sub-
13369 Fixed a problem with the GPE initialization that resulted from an
13370 ambiguity in the ACPI specification. One section of the
13371 specification states that both the address and length of the GPE
13372 block must be zero if the block is not supported. Another section
13373 implies that only the address need be zero if the block is not
13374 supported. The code has been changed so that both the address and
13375 the length must be non-zero to indicate a valid GPE block (i.e.,
13376 if either the address or the length is zero, the GPE block is
13379 Code and Data Size: Current core subsystem library sizes are shown
13380 below. These are the code and data sizes for the acpica.lib
13381 produced by the Microsoft Visual C++ 6.0 compiler, and these
13382 values do not include any ACPI driver or OSPM code. The debug
13383 version of the code includes the debug output trace mechanism and
13384 has a much larger code and data size. Note that these values will
13385 vary depending on the efficiency of the compiler and the compiler
13386 options used during generation.
13389 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13390 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13392 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13393 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
13398 Cleaned up EC driver. Exported an external EC read/write
13399 interface. By going through this, other drivers (most notably
13400 sonypi) will be able to serialize access to the EC.
13403 3) iASL Compiler/Disassembler
13405 Implemented support to optionally generate include files for both
13406 ASM and C (the -i switch). This simplifies BIOS development by
13407 automatically creating include files that contain external
13408 declarations for the symbols that are created within the
13410 (optionally generated) ASM and C AML source files.
13413 ----------------------------------------
13414 15 November 2002. Summary of changes for version 20021115.
13416 1) ACPI CA Core Subsystem:
13418 Fixed a memory leak problem where an error during resolution of
13420 method arguments during a method invocation from another method
13421 failed to cleanup properly by deleting all successfully resolved
13424 Fixed a problem where the target of the Index() operator was not
13425 correctly constructed if the source object was a package. This
13426 problem has not been detected because the use of a target operand
13427 with Index() is very rare.
13429 Fixed a problem with the Index() operator where an attempt was
13430 made to delete the operand objects twice.
13432 Fixed a problem where an attempt was made to delete an operand
13433 twice during execution of the CondRefOf() operator if the target
13436 Implemented the first of perhaps several internal create object
13437 functions that create and initialize a specific object type. This
13438 consolidates duplicated code wherever the object is created, thus
13439 shrinking the size of the subsystem.
13441 Implemented improved debug/error messages for errors that occur
13442 during nested method invocations. All executing method pathnames
13443 are displayed (with the error) as the call stack is unwound - thus
13446 Fixed a problem introduced in the 10/02 release that caused
13447 premature deletion of a buffer object if a buffer was used as an
13448 ASL operand where an integer operand is required (Thus causing an
13449 implicit object conversion from Buffer to Integer.) The change in
13450 the 10/02 release was attempting to fix a memory leak (albeit
13453 Code and Data Size: Current core subsystem library sizes are shown
13454 below. These are the code and data sizes for the acpica.lib
13455 produced by the Microsoft Visual C++ 6.0 compiler, and these
13456 values do not include any ACPI driver or OSPM code. The debug
13457 version of the code includes the debug output trace mechanism and
13458 has a much larger code and data size. Note that these values will
13459 vary depending on the efficiency of the compiler and the compiler
13460 options used during generation.
13463 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13464 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13466 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
13467 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
13472 Changed the implementation of the ACPI semaphores to use down()
13473 instead of down_interruptable(). It is important that the
13474 execution of ACPI control methods not be interrupted by signals.
13475 Methods must run to completion, or the system may be left in an
13476 unknown/unstable state.
13478 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
13482 3) iASL Compiler/Disassembler
13485 Changed the default location of output files. All output files
13486 are now placed in the current directory by default instead of in
13487 the directory of the source file. This change may affect some
13488 existing makefiles, but it brings the behavior of the compiler in
13489 line with other similar tools. The location of the output files
13490 can be overridden with the -p command line switch.
13493 ----------------------------------------
13494 11 November 2002. Summary of changes for version 20021111.
13497 0) ACPI Specification 2.0B is released and is now available at:
13498 http://www.acpi.info/index.html
13501 1) ACPI CA Core Subsystem:
13503 Implemented support for the ACPI 2.0 SMBus Operation Regions.
13504 This includes the early detection and handoff of the request to
13505 the SMBus region handler (avoiding all of the complex field
13506 support code), and support for the bidirectional return packet
13507 from an SMBus write operation. This paves the way for the
13508 development of SMBus drivers in each host operating system.
13510 Fixed a problem where the semaphore WAIT_FOREVER constant was
13511 defined as 32 bits, but must be 16 bits according to the ACPI
13512 specification. This had the side effect of causing ASL
13513 Mutex/Event timeouts even though the ASL code requested a wait
13514 forever. Changed all internal references to the ACPI timeout
13515 parameter to 16 bits to prevent future problems. Changed the name
13516 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
13518 Code and Data Size: Current core subsystem library sizes are shown
13519 below. These are the code and data sizes for the acpica.lib
13520 produced by the Microsoft Visual C++ 6.0 compiler, and these
13521 values do not include any ACPI driver or OSPM code. The debug
13522 version of the code includes the debug output trace mechanism and
13523 has a much larger code and data size. Note that these values will
13524 vary depending on the efficiency of the compiler and the compiler
13525 options used during generation.
13528 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13529 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13531 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
13532 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
13537 Module loading/unloading fixes (John Cagle)
13540 3) iASL Compiler/Disassembler
13542 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
13544 Implemented support for the disassembly of all SMBus protocol
13545 keywords (SMBQuick, SMBWord, etc.)
13547 ----------------------------------------
13548 01 November 2002. Summary of changes for version 20021101.
13551 1) ACPI CA Core Subsystem:
13553 Fixed a problem where platforms that have a GPE1 block but no GPE0
13554 block were not handled correctly. This resulted in a "GPE
13555 overlap" error message. GPE0 is no longer required.
13557 Removed code added in the previous release that inserted nodes
13558 into the namespace in alphabetical order. This caused some side-
13559 effects on various machines. The root cause of the problem is
13560 still under investigation since in theory, the internal ordering
13561 of the namespace nodes should not matter.
13564 Enhanced error reporting for the case where a named object is not
13565 found during control method execution. The full ACPI namepath
13566 (name reference) of the object that was not found is displayed in
13569 Note: as a result of the overhaul of the namespace object types in
13570 the previous release, the namespace nodes for the predefined
13571 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
13572 instead of ACPI_TYPE_ANY. This simplifies the namespace
13573 management code but may affect code that walks the namespace tree
13574 looking for specific object types.
13576 Code and Data Size: Current core subsystem library sizes are shown
13577 below. These are the code and data sizes for the acpica.lib
13578 produced by the Microsoft Visual C++ 6.0 compiler, and these
13579 values do not include any ACPI driver or OSPM code. The debug
13580 version of the code includes the debug output trace mechanism and
13581 has a much larger code and data size. Note that these values will
13582 vary depending on the efficiency of the compiler and the compiler
13583 options used during generation.
13586 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13587 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13589 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
13590 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
13595 Fixed a problem introduced in the previous release where the
13596 Processor and Thermal objects were not recognized and installed in
13597 /proc. This was related to the scope type change described above.
13600 3) iASL Compiler/Disassembler
13602 Implemented the -g option to get all of the required ACPI tables
13603 from the registry and save them to files (Windows version of the
13604 compiler only.) The required tables are the FADT, FACS, and DSDT.
13606 Added ACPI table checksum validation during table disassembly in
13607 order to catch corrupted tables.
13610 ----------------------------------------
13611 22 October 2002. Summary of changes for version 20021022.
13613 1) ACPI CA Core Subsystem:
13615 Implemented a restriction on the Scope operator that the target
13616 must already exist in the namespace at the time the operator is
13617 encountered (during table load or method execution). In other
13618 words, forward references are not allowed and Scope() cannot
13619 create a new object. This changes the previous behavior where the
13620 interpreter would create the name if not found. This new behavior
13621 correctly enables the search-to-root algorithm during namespace
13622 lookup of the target name. Because of this upsearch, this fixes
13623 the known Compaq _SB_.OKEC problem and makes both the AML
13624 interpreter and iASL compiler compatible with other ACPI
13627 Completed a major overhaul of the internal ACPI object types for
13628 the ACPI Namespace and the associated operand objects. Many of
13629 these types had become obsolete with the introduction of the two-
13630 pass namespace load. This cleanup simplifies the code and makes
13631 the entire namespace load mechanism much clearer and easier to
13634 Improved debug output for tracking scope opening/closing to help
13635 diagnose scoping issues. The old scope name as well as the new
13636 scope name are displayed. Also improved error messages for
13637 problems with ASL Mutex objects and error messages for GPE
13640 Cleaned up the namespace dump code, removed obsolete code.
13642 All string output (for all namespace/object dumps) now uses the
13643 common ACPI string output procedure which handles escapes properly
13644 and does not emit non-printable characters.
13646 Fixed some issues with constants in the 64-bit version of the
13647 local C library (utclib.c)
13652 EC Driver: No longer attempts to acquire the Global Lock at
13656 3) iASL Compiler/Disassembler
13658 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
13659 2 opcodes outside of a control method. This means that the
13660 "executable" operators (versus the "namespace" operators) cannot
13661 be used at the table level; they can only be used within a control
13664 Implemented the restriction on the Scope() operator where the
13665 target must already exist in the namespace at the time the
13666 operator is encountered (during ASL compilation). In other words,
13667 forward references are not allowed and Scope() cannot create a new
13668 object. This makes the iASL compiler compatible with other ACPI
13669 implementations and makes the Scope() implementation adhere to the
13670 ACPI specification.
13672 Fixed a problem where namepath optimization for the Alias operator
13673 was optimizing the wrong path (of the two namepaths.) This caused
13674 a "Missing alias link" error message.
13676 Fixed a problem where an "unknown reserved name" warning could be
13677 incorrectly generated for names like "_SB" when the trailing
13678 underscore is not used in the original ASL.
13680 Fixed a problem where the reserved name check did not handle
13681 NamePaths with multiple NameSegs correctly. The first nameseg of
13682 the NamePath was examined instead of the last NameSeg.
13685 ----------------------------------------
13687 02 October 2002. Summary of changes for this release.
13690 1) ACPI CA Core Subsystem version 20021002:
13692 Fixed a problem where a store/copy of a string to an existing
13693 string did not always set the string length properly in the String
13696 Fixed a reported problem with the ToString operator where the
13697 behavior was identical to the ToHexString operator instead of just
13698 simply converting a raw buffer to a string data type.
13700 Fixed a problem where CopyObject and the other "explicit"
13701 conversion operators were not updating the internal namespace node
13702 type as part of the store operation.
13704 Fixed a memory leak during implicit source operand conversion
13705 where the original object was not deleted if it was converted to a
13706 new object of a different type.
13708 Enhanced error messages for all problems associated with namespace
13709 lookups. Common procedure generates and prints the lookup name as
13710 well as the formatted status.
13712 Completed implementation of a new design for the Alias support
13713 within the namespace. The existing design did not handle the case
13714 where a new object was assigned to one of the two names due to the
13715 use of an explicit conversion operator, resulting in the two names
13716 pointing to two different objects. The new design simply points
13717 the Alias name to the original name node - not to the object.
13718 This results in a level of indirection that must be handled in the
13719 name resolution mechanism.
13721 Code and Data Size: Current core subsystem library sizes are shown
13722 below. These are the code and data sizes for the acpica.lib
13723 produced by the Microsoft Visual C++ 6.0 compiler, and these
13724 values do not include any ACPI driver or OSPM code. The debug
13725 version of the code includes the debug output trace mechanism and
13726 has a larger code and data size. Note that these values will vary
13727 depending on the efficiency of the compiler and the compiler
13728 options used during generation.
13731 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13732 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13734 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13735 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13740 Initialize thermal driver's timer before it is used. (Knut
13743 Allow handling negative celsius values. (Kochi Takayoshi)
13745 Fix thermal management and make trip points. R/W (Pavel Machek)
13747 Fix /proc/acpi/sleep. (P. Christeas)
13749 IA64 fixes. (David Mosberger)
13751 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
13753 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
13757 3) iASL Compiler/Disassembler
13759 Clarified some warning/error messages.
13762 ----------------------------------------
13763 18 September 2002. Summary of changes for this release.
13766 1) ACPI CA Core Subsystem version 20020918:
13768 Fixed a reported problem with reference chaining (via the Index()
13769 and RefOf() operators) in the ObjectType() and SizeOf() operators.
13770 The definition of these operators includes the dereferencing of
13771 all chained references to return information on the base object.
13773 Fixed a problem with stores to indexed package elements - the
13774 existing code would not complete the store if an "implicit
13775 conversion" was not performed. In other words, if the existing
13776 object (package element) was to be replaced completely, the code
13777 didn't handle this case.
13779 Relaxed typechecking on the ASL "Scope" operator to allow the
13780 target name to refer to an object of type Integer, String, or
13781 Buffer, in addition to the scoping object types (Device,
13782 predefined Scopes, Processor, PowerResource, and ThermalZone.)
13783 This allows existing AML code that has workarounds for a bug in
13784 Windows to function properly. A warning is issued, however. This
13785 affects both the AML interpreter and the iASL compiler. Below is
13786 an example of this type of ASL code:
13792 Fixed some reported problems with 64-bit integer support in the
13793 local implementation of C library functions (clib.c)
13798 Use ACPI fix map region instead of IOAPIC region, since it is
13799 undefined in non-SMP.
13801 Ensure that the SCI has the proper polarity and trigger, even on
13802 systems that do not have an interrupt override entry in the MADT.
13804 2.5 big driver reorganization (Pat Mochel)
13806 Use early table mapping code from acpitable.c (Andi Kleen)
13808 New blacklist entries (Andi Kleen)
13810 Blacklist improvements. Split blacklist code out into a separate
13811 file. Move checking the blacklist to very early. Previously, we
13812 would use ACPI tables, and then halfway through init, check the
13813 blacklist -- too late. Now, it's early enough to completely fall-
13817 3) iASL Compiler/Disassembler version 20020918:
13819 Fixed a problem where the typechecking code didn't know that an
13820 alias could point to a method. In other words, aliases were not
13821 being dereferenced during typechecking.
13824 ----------------------------------------
13825 29 August 2002. Summary of changes for this release.
13827 1) ACPI CA Core Subsystem Version 20020829:
13829 If the target of a Scope() operator already exists, it must be an
13830 object type that actually opens a scope -- such as a Device,
13831 Method, Scope, etc. This is a fatal runtime error. Similar error
13832 check has been added to the iASL compiler also.
13834 Tightened up the namespace load to disallow multiple names in the
13835 same scope. This previously was allowed if both objects were of
13836 the same type. (i.e., a lookup was the same as entering a new
13842 Ensure that the ACPI interrupt has the proper trigger and
13845 local_irq_disable is extraneous. (Matthew Wilcox)
13847 Make "acpi=off" actually do what it says, and not use the ACPI
13848 interpreter *or* the tables.
13850 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
13854 3) iASL Compiler/Disassembler Version 20020829:
13856 Implemented namepath optimization for name declarations. For
13857 example, a declaration like "Method (\_SB_.ABCD)" would get
13858 optimized to "Method (ABCD)" if the declaration is within the
13859 \_SB_ scope. This optimization is in addition to the named
13860 reference path optimization first released in the previous
13861 version. This would seem to complete all possible optimizations
13862 for namepaths within the ASL/AML.
13864 If the target of a Scope() operator already exists, it must be an
13865 object type that actually opens a scope -- such as a Device,
13866 Method, Scope, etc.
13868 Implemented a check and warning for unreachable code in the same
13869 block below a Return() statement.
13871 Fixed a problem where the listing file was not generated if the
13872 compiler aborted if the maximum error count was exceeded (200).
13874 Fixed a problem where the typechecking of method return values was
13875 broken. This includes the check for a return value when the
13876 method is invoked as a TermArg (a return value is expected.)
13878 Fixed a reported problem where EOF conditions during a quoted
13879 string or comment caused a fault.
13882 ----------------------------------------
13883 15 August 2002. Summary of changes for this release.
13885 1) ACPI CA Core Subsystem Version 20020815:
13887 Fixed a reported problem where a Store to a method argument that
13888 contains a reference did not perform the indirect store correctly.
13889 This problem was created during the conversion to the new
13890 reference object model - the indirect store to a method argument
13891 code was not updated to reflect the new model.
13893 Reworked the ACPI mode change code to better conform to ACPI 2.0,
13894 handle corner cases, and improve code legibility (Kochi Takayoshi)
13896 Fixed a problem with the pathname parsing for the carat (^)
13897 prefix. The heavy use of the carat operator by the new namepath
13898 optimization in the iASL compiler uncovered a problem with the AML
13899 interpreter handling of this prefix. In the case where one or
13900 more carats precede a single nameseg, the nameseg was treated as
13901 standalone and the search rule (to root) was inadvertently
13902 applied. This could cause both the iASL compiler and the
13903 interpreter to find the wrong object or to miss the error that
13904 should occur if the object does not exist at that exact pathname.
13906 Found and fixed the problem where the HP Pavilion DSDT would not
13907 load. This was a relatively minor tweak to the table loading code
13908 (a problem caused by the unexpected encounter with a method
13909 invocation not within a control method), but it does not solve the
13910 overall issue of the execution of AML code at the table level.
13911 This investigation is still ongoing.
13913 Code and Data Size: Current core subsystem library sizes are shown
13914 below. These are the code and data sizes for the acpica.lib
13915 produced by the Microsoft Visual C++ 6.0 compiler, and these
13916 values do not include any ACPI driver or OSPM code. The debug
13917 version of the code includes the debug output trace mechanism and
13918 has a larger code and data size. Note that these values will vary
13919 depending on the efficiency of the compiler and the compiler
13920 options used during generation.
13923 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13924 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13926 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13927 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13932 Remove redundant slab.h include (Brad Hards)
13934 Fix several bugs in thermal.c (Herbert Nachtnebel)
13936 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
13938 Change acpi_system_suspend to use updated irq functions (Pavel
13941 Export acpi_get_firmware_table (Matthew Wilcox)
13943 Use proper root proc entry for ACPI (Kochi Takayoshi)
13945 Fix early-boot table parsing (Bjorn Helgaas)
13948 3) iASL Compiler/Disassembler
13950 Reworked the compiler options to make them more consistent and to
13951 use two-letter options where appropriate. We were running out of
13952 sensible letters. This may break some makefiles, so check the
13953 current options list by invoking the compiler with no parameters.
13955 Completed the design and implementation of the ASL namepath
13956 optimization option for the compiler. This option optimizes all
13957 references to named objects to the shortest possible path. The
13958 first attempt tries to utilize a single nameseg (4 characters) and
13959 the "search-to-root" algorithm used by the interpreter. If that
13960 cannot be used (because either the name is not in the search path
13961 or there is a conflict with another object with the same name),
13962 the pathname is optimized using the carat prefix (usually a
13963 shorter string than specifying the entire path from the root.)
13965 Implemented support to obtain the DSDT from the Windows registry
13966 (when the disassembly option is specified with no input file).
13967 Added this code as the implementation for AcpiOsTableOverride in
13968 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
13969 utility) to scan memory for the DSDT to the AcpiOsTableOverride
13970 function in the DOS OSL to make the disassembler truly OS
13973 Implemented a new option to disassemble and compile in one step.
13974 When used without an input filename, this option will grab the
13975 DSDT from the local machine, disassemble it, and compile it in one
13978 Added a warning message for invalid escapes (a backslash followed
13979 by any character other than the allowable escapes). This catches
13980 the quoted string error "\_SB_" (which should be "\\_SB_" ).
13982 Also, there are numerous instances in the ACPI specification where
13985 Added a compiler option to disable all optimizations. This is
13986 basically the "compatibility mode" because by using this option,
13987 the AML code will come out exactly the same as other ASL
13990 Added error messages for incorrectly ordered dependent resource
13991 functions. This includes: missing EndDependentFn macro at end of
13992 dependent resource list, nested dependent function macros (both
13993 start and end), and missing StartDependentFn macro. These are
13994 common errors that should be caught at compile time.
13996 Implemented _OSI support for the disassembler and compiler. _OSI
13997 must be included in the namespace for proper disassembly (because
13998 the disassembler must know the number of arguments.)
14000 Added an "optimization" message type that is optional (off by
14001 default). This message is used for all optimizations - including
14002 constant folding, integer optimization, and namepath optimization.
14004 ----------------------------------------
14005 25 July 2002. Summary of changes for this release.
14008 1) ACPI CA Core Subsystem Version 20020725:
14010 The AML Disassembler has been enhanced to produce compilable ASL
14011 code and has been integrated into the iASL compiler (see below) as
14012 well as the single-step disassembly for the AML debugger and the
14013 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
14014 resource templates and macros are fully supported. The
14015 disassembler has been tested on over 30 different AML files,
14016 producing identical AML when the resulting disassembled ASL file
14017 is recompiled with the same ASL compiler.
14019 Modified the Resource Manager to allow zero interrupts and zero
14020 dma channels during the GetCurrentResources call. This was
14021 causing problems on some platforms.
14023 Added the AcpiOsRedirectOutput interface to the OSL to simplify
14024 output redirection for the AcpiOsPrintf and AcpiOsVprintf
14027 Code and Data Size: Current core subsystem library sizes are shown
14028 below. These are the code and data sizes for the acpica.lib
14029 produced by the Microsoft Visual C++ 6.0 compiler, and these
14030 values do not include any ACPI driver or OSPM code. The debug
14031 version of the code includes the debug output trace mechanism and
14032 has a larger code and data size. Note that these values will vary
14033 depending on the efficiency of the compiler and the compiler
14034 options used during generation.
14037 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14038 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14040 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14041 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14046 Fixed a panic in the EC driver (Dominik Brodowski)
14048 Implemented checksum of the R/XSDT itself during Linux table scan
14054 The AML disassembler is integrated into the compiler. The "-d"
14055 option invokes the disassembler to completely disassemble an
14056 input AML file, producing as output a text ASL file with the
14057 extension ".dsl" (to avoid name collisions with existing .asl
14058 source files.) A future enhancement will allow the disassembler
14059 to obtain the BIOS DSDT from the registry under Windows.
14061 Fixed a problem with the VendorShort and VendorLong resource
14062 descriptors where an invalid AML sequence was created.
14064 Implemented a fix for BufferData term in the ASL parser. It was
14065 inadvertently defined twice, allowing invalid syntax to pass and
14066 causing reduction conflicts.
14068 Fixed a problem where the Ones opcode could get converted to a
14069 value of zero if "Ones" was used where a byte, word or dword value
14070 was expected. The 64-bit value is now truncated to the correct
14071 size with the correct value.
14075 ----------------------------------------
14076 02 July 2002. Summary of changes for this release.
14079 1) ACPI CA Core Subsystem Version 20020702:
14081 The Table Manager code has been restructured to add several new
14082 features. Tables that are not required by the core subsystem
14083 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
14084 validated in any way and are returned from AcpiGetFirmwareTable if
14085 requested. The AcpiOsTableOverride interface is now called for
14086 each table that is loaded by the subsystem in order to allow the
14087 host to override any table it chooses. Previously, only the DSDT
14088 could be overridden. Added one new files, tbrsdt.c and
14091 Fixed a problem with the conversion of internal package objects to
14092 external objects (when a package is returned from a control
14093 method.) The return buffer length was set to zero instead of the
14094 proper length of the package object.
14096 Fixed a reported problem with the use of the RefOf and DeRefOf
14097 operators when passing reference arguments to control methods. A
14098 new type of Reference object is used internally for references
14099 produced by the RefOf operator.
14101 Added additional error messages in the Resource Manager to explain
14102 AE_BAD_DATA errors when they occur during resource parsing.
14104 Split the AcpiEnableSubsystem into two primitives to enable a
14105 finer granularity initialization sequence. These two calls should
14106 be called in this order: AcpiEnableSubsystem (flags),
14107 AcpiInitializeObjects (flags). The flags parameter remains the
14113 Updated the ACPI utilities module to understand the new style of
14114 fully resolved package objects that are now returned from the core
14115 subsystem. This eliminates errors of the form:
14117 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
14118 acpi_utils-0430 [145] acpi_evaluate_reference:
14119 Invalid element in package (not a device reference)
14121 The method evaluation utility uses the new buffer allocation
14122 scheme instead of calling AcpiEvaluate Object twice.
14124 Added support for ECDT. This allows the use of the Embedded
14126 Controller before the namespace has been fully initialized, which
14127 is necessary for ACPI 2.0 support, and for some laptops to
14128 initialize properly. (Laptops using ECDT are still rare, so only
14129 limited testing was performed of the added functionality.)
14131 Fixed memory leaks in the EC driver.
14133 Eliminated a brittle code structure in acpi_bus_init().
14135 Eliminated the acpi_evaluate() helper function in utils.c. It is
14136 no longer needed since acpi_evaluate_object can optionally
14137 allocate memory for the return object.
14139 Implemented fix for keyboard hang when getting battery readings on
14140 some systems (Stephen White)
14142 PCI IRQ routing update (Dominik Brodowski)
14144 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
14147 ----------------------------------------
14148 11 June 2002. Summary of changes for this release.
14151 1) ACPI CA Core Subsystem Version 20020611:
14153 Fixed a reported problem where constants such as Zero and One
14154 appearing within _PRT packages were not handled correctly within
14155 the resource manager code. Originally reported against the ASL
14156 compiler because the code generator now optimizes integers to
14157 their minimal AML representation (i.e. AML constants if possible.)
14158 The _PRT code now handles all AML constant opcodes correctly
14159 (Zero, One, Ones, Revision).
14161 Fixed a problem with the Concatenate operator in the AML
14162 interpreter where a buffer result object was incorrectly marked as
14163 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
14165 All package sub-objects are now fully resolved before they are
14166 returned from the external ACPI interfaces. This means that name
14167 strings are resolved to object handles, and constant operators
14168 (Zero, One, Ones, Revision) are resolved to Integers.
14170 Implemented immediate resolution of the AML Constant opcodes
14171 (Zero, One, Ones, Revision) to Integer objects upon detection
14172 within the AML stream. This has simplified and reduced the
14173 generated code size of the subsystem by eliminating about 10
14174 switch statements for these constants (which previously were
14175 contained in Reference objects.) The complicating issues are that
14176 the Zero opcode is used as a "placeholder" for unspecified
14177 optional target operands and stores to constants are defined to be
14180 Code and Data Size: Current core subsystem library sizes are shown
14181 below. These are the code and data sizes for the acpica.lib
14182 produced by the Microsoft Visual C++ 6.0 compiler, and these
14183 values do not include any ACPI driver or OSPM code. The debug
14184 version of the code includes the debug output trace mechanism and
14185 has a larger code and data size. Note that these values will vary
14186 depending on the efficiency of the compiler and the compiler
14187 options used during generation.
14190 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14191 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14193 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
14194 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
14200 Added preliminary support for obtaining _TRA data for PCI root
14201 bridges (Bjorn Helgaas).
14204 3) iASL Compiler Version X2046:
14206 Fixed a problem where the "_DDN" reserved name was defined to be a
14207 control method with one argument. There are no arguments, and
14208 _DDN does not have to be a control method.
14210 Fixed a problem with the Linux version of the compiler where the
14211 source lines printed with error messages were the wrong lines.
14212 This turned out to be the "LF versus CR/LF" difference between
14213 Windows and Unix. This appears to be the longstanding issue
14214 concerning listing output and error messages.
14216 Fixed a problem with the Linux version of compiler where opcode
14217 names within error messages were wrong. This was caused by a
14218 slight difference in the output of the Flex tool on Linux versus
14221 Fixed a problem with the Linux compiler where the hex output files
14222 contained some garbage data caused by an internal buffer overrun.
14225 ----------------------------------------
14226 17 May 2002. Summary of changes for this release.
14229 1) ACPI CA Core Subsystem Version 20020517:
14231 Implemented a workaround to an BIOS bug discovered on the HP
14232 OmniBook where the FADT revision number and the table size are
14233 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
14234 behavior is to fallback to using only the ACPI 1.0 fields of the
14235 FADT if the table is too small to be a ACPI 2.0 table as claimed
14236 by the revision number. Although this is a BIOS bug, this is a
14237 case where the workaround is simple enough and with no side
14238 effects, so it seemed prudent to add it. A warning message is
14241 Implemented minimum size checks for the fixed-length ACPI tables -
14242 - the FADT and FACS, as well as consistency checks between the
14243 revision number and the table size.
14245 Fixed a reported problem in the table override support where the
14246 new table pointer was incorrectly treated as a physical address
14247 instead of a logical address.
14249 Eliminated the use of the AE_AML_ERROR exception and replaced it
14250 with more descriptive codes.
14252 Fixed a problem where an exception would occur if an ASL Field was
14253 defined with no named Field Units underneath it (used by some
14256 Code and Data Size: Current core subsystem library sizes are shown
14257 below. These are the code and data sizes for the acpica.lib
14258 produced by the Microsoft Visual C++ 6.0 compiler, and these
14259 values do not include any ACPI driver or OSPM code. The debug
14260 version of the code includes the debug output trace mechanism and
14261 has a larger code and data size. Note that these values will vary
14262 depending on the efficiency of the compiler and the compiler
14263 options used during generation.
14266 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14267 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14269 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
14270 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
14276 Much work done on ACPI init (MADT and PCI IRQ routing support).
14277 (Paul D. and Dominik Brodowski)
14279 Fix PCI IRQ-related panic on boot (Sam Revitch)
14281 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
14283 Fix "MHz" typo (Dominik Brodowski)
14285 Fix RTC year 2000 issue (Dominik Brodowski)
14287 Preclude multiple button proc entries (Eric Brunet)
14289 Moved arch-specific code out of include/platform/aclinux.h
14291 3) iASL Compiler Version X2044:
14293 Implemented error checking for the string used in the EISAID macro
14294 (Usually used in the definition of the _HID object.) The code now
14295 strictly enforces the PnP format - exactly 7 characters, 3
14296 uppercase letters and 4 hex digits.
14298 If a raw string is used in the definition of the _HID object
14299 (instead of the EISAID macro), the string must contain all
14300 alphanumeric characters (e.g., "*PNP0011" is not allowed because
14303 Implemented checking for invalid use of ACPI reserved names for
14304 most of the name creation operators (Name, Device, Event, Mutex,
14305 OperationRegion, PowerResource, Processor, and ThermalZone.)
14306 Previously, this check was only performed for control methods.
14308 Implemented an additional check on the Name operator to emit an
14309 error if a reserved name that must be implemented in ASL as a
14310 control method is used. We know that a reserved name must be a
14311 method if it is defined with input arguments.
14313 The warning emitted when a namespace object reference is not found
14314 during the cross reference phase has been changed into an error.
14315 The "External" directive should be used for names defined in other
14319 4) Tools and Utilities
14321 The 16-bit tools (adump16 and aexec16) have been regenerated and
14324 Fixed a problem with the output of both acpidump and adump16 where
14325 the indentation of closing parentheses and brackets was not
14327 aligned properly with the parent block.
14330 ----------------------------------------
14331 03 May 2002. Summary of changes for this release.
14334 1) ACPI CA Core Subsystem Version 20020503:
14336 Added support a new OSL interface that allows the host operating
14338 system software to override the DSDT found in the firmware -
14339 AcpiOsTableOverride. With this interface, the OSL can examine the
14340 version of the firmware DSDT and replace it with a different one
14343 Added new external interfaces for accessing ACPI registers from
14344 device drivers and other system software - AcpiGetRegister and
14345 AcpiSetRegister. This was simply an externalization of the
14346 existing AcpiHwBitRegister interfaces.
14348 Fixed a regression introduced in the previous build where the
14349 ASL/AML CreateField operator always returned an error,
14350 "destination must be a NS Node".
14352 Extended the maximum time (before failure) to successfully enable
14353 ACPI mode to 3 seconds.
14355 Code and Data Size: Current core subsystem library sizes are shown
14356 below. These are the code and data sizes for the acpica.lib
14357 produced by the Microsoft Visual C++ 6.0 compiler, and these
14358 values do not include any ACPI driver or OSPM code. The debug
14359 version of the code includes the debug output trace mechanism and
14360 has a larger code and data size. Note that these values will vary
14361 depending on the efficiency of the compiler and the compiler
14362 options used during generation.
14365 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14366 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14368 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
14369 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
14374 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
14375 free. While 3 out of 4 of our in-house systems work fine, the last
14376 one still hangs when testing the LAPIC timer.
14378 Renamed many files in 2.5 kernel release to omit "acpi_" from the
14381 Added warning on boot for Presario 711FR.
14383 Sleep improvements (Pavel Machek)
14385 ACPI can now be built without CONFIG_PCI enabled.
14387 IA64: Fixed memory map functions (JI Lee)
14390 3) iASL Compiler Version X2043:
14392 Added support to allow the compiler to be integrated into the MS
14393 VC++ development environment for one-button compilation of single
14394 files or entire projects -- with error-to-source-line mapping.
14396 Implemented support for compile-time constant folding for the
14397 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
14398 specification. This allows the ASL writer to use expressions
14399 instead of Integer/Buffer/String constants in terms that must
14400 evaluate to constants at compile time and will also simplify the
14401 emitted AML in any such sub-expressions that can be folded
14402 (evaluated at compile-time.) This increases the size of the
14403 compiler significantly because a portion of the ACPI CA AML
14404 interpreter is included within the compiler in order to pre-
14405 evaluate constant expressions.
14408 Fixed a problem with the "Unicode" ASL macro that caused the
14409 compiler to fault. (This macro is used in conjunction with the
14410 _STR reserved name.)
14412 Implemented an AML opcode optimization to use the Zero, One, and
14413 Ones opcodes where possible to further reduce the size of integer
14414 constants and thus reduce the overall size of the generated AML
14417 Implemented error checking for new reserved terms for ACPI version
14420 Implemented the -qr option to display the current list of ACPI
14421 reserved names known to the compiler.
14423 Implemented the -qc option to display the current list of ASL
14424 operators that are allowed within constant expressions and can
14425 therefore be folded at compile time if the operands are constants.
14430 Updated the Programmer's Reference for new interfaces, data types,
14431 and memory allocation model options.
14433 Updated the iASL Compiler User Reference to apply new format and
14434 add information about new features and options.
14436 ----------------------------------------
14437 19 April 2002. Summary of changes for this release.
14439 1) ACPI CA Core Subsystem Version 20020419:
14441 The source code base for the Core Subsystem has been completely
14442 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
14443 versions. The Lint option files used are included in the
14444 /acpi/generate/lint directory.
14446 Implemented enhanced status/error checking across the entire
14447 Hardware manager subsystem. Any hardware errors (reported from
14448 the OSL) are now bubbled up and will abort a running control
14452 Fixed a problem where the per-ACPI-table integer width (32 or 64)
14453 was stored only with control method nodes, causing a fault when
14454 non-control method code was executed during table loading. The
14455 solution implemented uses a global variable to indicate table
14456 width across the entire ACPI subsystem. Therefore, ACPI CA does
14457 not support mixed integer widths across different ACPI tables
14460 Fixed a problem where NULL extended fields (X fields) in an ACPI
14461 2.0 ACPI FADT caused the table load to fail. Although the
14462 existing ACPI specification is a bit fuzzy on this topic, the new
14463 behavior is to fall back on a ACPI 1.0 field if the corresponding
14464 ACPI 2.0 X field is zero (even though the table revision indicates
14465 a full ACPI 2.0 table.) The ACPI specification will be updated to
14466 clarify this issue.
14468 Fixed a problem with the SystemMemory operation region handler
14469 where memory was always accessed byte-wise even if the AML-
14470 specified access width was larger than a byte. This caused
14471 problems on systems with memory-mapped I/O. Memory is now
14472 accessed with the width specified. On systems that do not support
14473 non-aligned transfers, a check is made to guarantee proper address
14474 alignment before proceeding in order to avoid an AML-caused
14475 alignment fault within the kernel.
14478 Fixed a problem with the ExtendedIrq resource where only one byte
14479 of the 4-byte Irq field was extracted.
14481 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
14482 function was out of date and required a rewrite.
14484 Code and Data Size: Current core subsystem library sizes are shown
14485 below. These are the code and data sizes for the acpica.lib
14486 produced by the Microsoft Visual C++ 6.0 compiler, and these
14487 values do not include any ACPI driver or OSPM code. The debug
14488 version of the code includes the debug output trace mechanism and
14489 has a larger code and data size. Note that these values will vary
14490 depending on the efficiency of the compiler and the compiler
14491 options used during generation.
14494 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14495 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14497 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
14498 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
14503 PCI IRQ routing fixes (Dominik Brodowski)
14506 3) iASL Compiler Version X2042:
14508 Implemented an additional compile-time error check for a field
14509 unit whose size + minimum access width would cause a run-time
14510 access beyond the end-of-region. Previously, only the field size
14511 itself was checked.
14513 The Core subsystem and iASL compiler now share a common parse
14514 object in preparation for compile-time evaluation of the type
14515 3/4/5 ASL operators.
14518 ----------------------------------------
14519 Summary of changes for this release: 03_29_02
14521 1) ACPI CA Core Subsystem Version 20020329:
14523 Implemented support for late evaluation of TermArg operands to
14524 Buffer and Package objects. This allows complex expressions to be
14525 used in the declarations of these object types.
14527 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
14528 1.0, if the field was larger than 32 bits, it was returned as a
14529 buffer - otherwise it was returned as an integer. In ACPI 2.0,
14530 the field is returned as a buffer only if the field is larger than
14531 64 bits. The TableRevision is now considered when making this
14532 conversion to avoid incompatibility with existing ASL code.
14534 Implemented logical addressing for AcpiOsGetRootPointer. This
14535 allows an RSDP with either a logical or physical address. With
14536 this support, the host OS can now override all ACPI tables with
14537 one logical RSDP. Includes implementation of "typed" pointer
14538 support to allow a common data type for both physical and logical
14539 pointers internally. This required a change to the
14540 AcpiOsGetRootPointer interface.
14542 Implemented the use of ACPI 2.0 Generic Address Structures for all
14543 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
14544 mapped I/O for these ACPI features.
14546 Initialization now ignores not only non-required tables (All
14547 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
14548 not validate the table headers of unrecognized tables.
14550 Fixed a problem where a notify handler could only be
14551 installed/removed on an object of type Device. All "notify"
14553 objects are now supported -- Devices, Processor, Power, and
14556 Removed most verbosity from the ACPI_DB_INFO debug level. Only
14557 critical information is returned when this debug level is enabled.
14559 Code and Data Size: Current core subsystem library sizes are shown
14560 below. These are the code and data sizes for the acpica.lib
14561 produced by the Microsoft Visual C++ 6.0 compiler, and these
14562 values do not include any ACPI driver or OSPM code. The debug
14563 version of the code includes the debug output trace mechanism and
14564 has a larger code and data size. Note that these values will vary
14565 depending on the efficiency of the compiler and the compiler
14566 options used during generation.
14569 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14570 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14572 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
14573 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
14578 The processor driver (acpi_processor.c) now fully supports ACPI
14579 2.0-based processor performance control (e.g. Intel(R)
14580 SpeedStep(TM) technology) Note that older laptops that only have
14581 the Intel "applet" interface are not supported through this. The
14582 'limit' and 'performance' interface (/proc) are fully functional.
14583 [Note that basic policy for controlling performance state
14584 transitions will be included in the next version of ospmd.] The
14585 idle handler was modified to more aggressively use C2, and PIIX4
14586 errata handling underwent a complete overhaul (big thanks to
14587 Dominik Brodowski).
14589 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
14590 based devices in the ACPI namespace are now dynamically bound
14591 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
14592 This allows, among other things, ACPI to resolve bus numbers for
14593 subordinate PCI bridges.
14595 Enhanced PCI IRQ routing to get the proper bus number for _PRT
14596 entries defined underneath PCI bridges.
14598 Added IBM 600E to bad bios list due to invalid _ADR value for
14599 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
14601 In the process of adding full MADT support (e.g. IOAPIC) for IA32
14602 (acpi.c, mpparse.c) -- stay tuned.
14604 Added back visual differentiation between fixed-feature and
14605 control-method buttons in dmesg. Buttons are also subtyped (e.g.
14606 button/power/PWRF) to simplify button identification.
14608 We no longer use -Wno-unused when compiling debug. Please ignore
14609 any "_THIS_MODULE defined but not used" messages.
14611 Can now shut down the system using "magic sysrq" key.
14614 3) iASL Compiler version 2041:
14616 Fixed a problem where conversion errors for hex/octal/decimal
14617 constants were not reported.
14619 Implemented a fix for the General Register template Address field.
14620 This field was 8 bits when it should be 64.
14622 Fixed a problem where errors/warnings were no longer being emitted
14623 within the listing output file.
14625 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
14626 exactly 4 characters, alphanumeric only.
14631 ----------------------------------------
14632 Summary of changes for this release: 03_08_02
14635 1) ACPI CA Core Subsystem Version 20020308:
14637 Fixed a problem with AML Fields where the use of the "AccessAny"
14638 keyword could cause an interpreter error due to attempting to read
14639 or write beyond the end of the parent Operation Region.
14641 Fixed a problem in the SystemMemory Operation Region handler where
14642 an attempt was made to map memory beyond the end of the region.
14643 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
14644 errors on some Linux systems.
14646 Fixed a problem where the interpreter/namespace "search to root"
14647 algorithm was not functioning for some object types. Relaxed the
14648 internal restriction on the search to allow upsearches for all
14649 external object types as well as most internal types.
14654 We now use safe_halt() macro versus individual calls to sti | hlt.
14656 Writing to the processor limit interface should now work. "echo 1"
14657 will increase the limit, 2 will decrease, and 0 will reset to the
14664 Fixed segfault on Linux version.
14667 ----------------------------------------
14668 Summary of changes for this release: 02_25_02
14670 1) ACPI CA Core Subsystem:
14673 Fixed a problem where the GPE bit masks were not initialized
14674 properly, causing erratic GPE behavior.
14676 Implemented limited support for multiple calling conventions. The
14677 code can be generated with either the VPL (variable parameter
14678 list, or "C") convention, or the FPL (fixed parameter list, or
14679 "Pascal") convention. The core subsystem is about 3.4% smaller
14680 when generated with FPL.
14685 Re-add some /proc/acpi/event functionality that was lost during
14688 Resolved issue with /proc events for fixed-feature buttons showing
14689 up as the system device.
14691 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
14693 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
14695 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
14697 Fixed limit interface & usage to fix bugs with passive cooling
14700 Restructured PRT support.
14703 ----------------------------------------
14704 Summary of changes for this label: 02_14_02
14707 1) ACPI CA Core Subsystem:
14709 Implemented support in AcpiLoadTable to allow loading of FACS and
14712 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
14713 been removed. All 64-bit platforms should be migrated to the ACPI
14714 2.0 tables. The actbl71.h header has been removed from the source
14717 All C macros defined within the subsystem have been prefixed with
14718 "ACPI_" to avoid collision with other system include files.
14720 Removed the return value for the two AcpiOsPrint interfaces, since
14721 it is never used and causes lint warnings for ignoring the return
14724 Added error checking to all internal mutex acquire and release
14725 calls. Although a failure from one of these interfaces is
14726 probably a fatal system error, these checks will cause the
14727 immediate abort of the currently executing method or interface.
14729 Fixed a problem where the AcpiSetCurrentResources interface could
14730 fault. This was a side effect of the deployment of the new memory
14733 Fixed a couple of problems with the Global Lock support introduced
14734 in the last major build. The "common" (1.0/2.0) internal FACS was
14735 being overwritten with the FACS signature and clobbering the
14736 Global Lock pointer. Also, the actual firmware FACS was being
14737 unmapped after construction of the "common" FACS, preventing
14738 access to the actual Global Lock field within it. The "common"
14739 internal FACS is no longer installed as an actual ACPI table; it
14740 is used simply as a global.
14742 Code and Data Size: Current core subsystem library sizes are shown
14743 below. These are the code and data sizes for the acpica.lib
14744 produced by the Microsoft Visual C++ 6.0 compiler, and these
14745 values do not include any ACPI driver or OSPM code. The debug
14746 version of the code includes the debug output trace mechanism and
14747 has a larger code and data size. Note that these values will vary
14748 depending on the efficiency of the compiler and the compiler
14749 options used during generation.
14751 Previous Release (02_07_01)
14752 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14753 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14755 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14756 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14761 Updated Linux-specific code for core macro and OSL interface
14762 changes described above.
14764 Improved /proc/acpi/event. It now can be opened only once and has
14765 proper poll functionality.
14767 Fixed and restructured power management (acpi_bus).
14769 Only create /proc "view by type" when devices of that class exist.
14771 Fixed "charging/discharging" bug (and others) in acpi_battery.
14773 Improved thermal zone code.
14776 3) ASL Compiler, version X2039:
14779 Implemented the new compiler restriction on ASL String hex/octal
14780 escapes to non-null, ASCII values. An error results if an invalid
14781 value is used. (This will require an ACPI 2.0 specification
14784 AML object labels that are output to the optional C and ASM source
14785 are now prefixed with both the ACPI table signature and table ID
14786 to help guarantee uniqueness within a large BIOS project.
14789 ----------------------------------------
14790 Summary of changes for this label: 02_01_02
14792 1) ACPI CA Core Subsystem:
14794 ACPI 2.0 support is complete in the entire Core Subsystem and the
14795 ASL compiler. All new ACPI 2.0 operators are implemented and all
14796 other changes for ACPI 2.0 support are complete. With
14797 simultaneous code and data optimizations throughout the subsystem,
14798 ACPI 2.0 support has been implemented with almost no additional
14799 cost in terms of code and data size.
14801 Implemented a new mechanism for allocation of return buffers. If
14802 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
14803 be allocated on behalf of the caller. Consolidated all return
14804 buffer validation and allocation to a common procedure. Return
14805 buffers will be allocated via the primary OSL allocation interface
14806 since it appears that a separate pool is not needed by most users.
14807 If a separate pool is required for these buffers, the caller can
14808 still use the original mechanism and pre-allocate the buffer(s).
14810 Implemented support for string operands within the DerefOf
14813 Restructured the Hardware and Event managers to be table driven,
14814 simplifying the source code and reducing the amount of generated
14817 Split the common read/write low-level ACPI register bitfield
14818 procedure into a separate read and write, simplifying the code
14821 Obsoleted the AcpiOsCallocate OSL interface. This interface was
14822 used only a handful of times and didn't have enough critical mass
14823 for a separate interface. Replaced with a common calloc procedure
14826 Fixed a reported problem with the GPE number mapping mechanism
14827 that allows GPE1 numbers to be non-contiguous with GPE0.
14828 Reorganized the GPE information and shrunk a large array that was
14829 originally large enough to hold info for all possible GPEs (256)
14830 to simply large enough to hold all GPEs up to the largest GPE
14831 number on the machine.
14833 Fixed a reported problem with resource structure alignment on 64-
14836 Changed the AcpiEnableEvent and AcpiDisableEvent external
14837 interfaces to not require any flags for the common case of
14838 enabling/disabling a GPE.
14840 Implemented support to allow a "Notify" on a Processor object.
14842 Most TBDs in comments within the source code have been resolved
14846 Fixed a problem in the interpreter where a standalone parent
14847 prefix (^) was not handled correctly in the interpreter and
14850 Removed obsolete and unnecessary GPE save/restore code.
14852 Implemented Field support in the ASL Load operator. This allows a
14853 table to be loaded from a named field, in addition to loading a
14854 table directly from an Operation Region.
14856 Implemented timeout and handle support in the external Global Lock
14859 Fixed a problem in the AcpiDump utility where pathnames were no
14860 longer being generated correctly during the dump of named objects.
14862 Modified the AML debugger to give a full display of if/while
14863 predicates instead of just one AML opcode at a time. (The
14864 predicate can have several nested ASL statements.) The old method
14865 was confusing during single stepping.
14867 Code and Data Size: Current core subsystem library sizes are shown
14868 below. These are the code and data sizes for the acpica.lib
14869 produced by the Microsoft Visual C++ 6.0 compiler, and these
14870 values do not include any ACPI driver or OSPM code. The debug
14871 version of the code includes the debug output trace mechanism and
14872 has a larger code and data size. Note that these values will vary
14873 depending on the efficiency of the compiler and the compiler
14874 options used during generation.
14876 Previous Release (12_18_01)
14877 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14878 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14880 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14881 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14885 Implemented fix for PIIX reverse throttling errata (Processor
14888 Added new Limit interface (Processor and Thermal drivers)
14890 New thermal policy (Thermal driver)
14892 Many updates to /proc
14894 Battery "low" event support (Battery driver)
14896 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
14898 IA32 - IA64 initialization unification, no longer experimental
14900 Menuconfig options redesigned
14902 3) ASL Compiler, version X2037:
14904 Implemented several new output features to simplify integration of
14905 AML code into firmware: 1) Output the AML in C source code with
14906 labels for each named ASL object. The original ASL source code
14907 is interleaved as C comments. 2) Output the AML in ASM source code
14908 with labels and interleaved ASL source. 3) Output the AML in
14909 raw hex table form, in either C or ASM.
14911 Implemented support for optional string parameters to the
14912 LoadTable operator.
14914 Completed support for embedded escape sequences within string
14915 literals. The compiler now supports all single character escapes
14916 as well as the Octal and Hex escapes. Note: the insertion of a
14917 null byte into a string literal (via the hex/octal escape) causes
14918 the string to be immediately terminated. A warning is issued.
14920 Fixed a problem where incorrect AML was generated for the case
14921 where an ASL namepath consists of a single parent prefix (
14923 ) with no trailing name segments.
14925 The compiler has been successfully generated with a 64-bit C
14931 ----------------------------------------
14932 Summary of changes for this label: 12_18_01
14936 Enhanced blacklist with reason and severity fields. Any table's
14937 signature may now be used to identify a blacklisted system.
14939 Call _PIC control method to inform the firmware which interrupt
14940 model the OS is using. Turn on any disabled link devices.
14942 Cleaned up busmgr /proc error handling (Andreas Dilger)
14944 2) ACPI CA Core Subsystem:
14946 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
14949 Completed implementation of the ACPI 2.0 "Continue",
14950 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
14951 operators. All new ACPI 2.0 operators are now implemented in both
14952 the ASL compiler and the AML interpreter. The only remaining ACPI
14953 2.0 task is support for the String data type in the DerefOf
14954 operator. Fixed a problem with AcquireMutex where the status code
14955 was lost if the caller had to actually wait for the mutex.
14957 Increased the maximum ASL Field size from 64K bits to 4G bits.
14959 Completed implementation of the external Global Lock interfaces --
14960 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
14961 Handler parameters were added.
14963 Completed another pass at removing warnings and issues when
14964 compiling with 64-bit compilers. The code now compiles cleanly
14965 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
14966 add and subtract (diff) macros have changed considerably.
14969 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
14970 64-bit platforms, 32-bits on all others. This type is used
14971 wherever memory allocation and/or the C sizeof() operator is used,
14972 and affects the OSL memory allocation interfaces AcpiOsAllocate
14973 and AcpiOsCallocate.
14975 Implemented sticky user breakpoints in the AML debugger.
14977 Code and Data Size: Current core subsystem library sizes are shown
14978 below. These are the code and data sizes for the acpica.lib
14979 produced by the Microsoft Visual C++ 6.0 compiler, and these
14980 values do not include any ACPI driver or OSPM code. The debug
14981 version of the code includes the debug output trace mechanism and
14982 has a larger code and data size. Note that these values will vary
14983 depending on the efficiency of the compiler and the compiler
14984 options used during generation.
14986 Previous Release (12_05_01)
14987 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14988 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14990 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14991 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14993 3) ASL Compiler, version X2034:
14995 Now checks for (and generates an error if detected) the use of a
14996 Break or Continue statement without an enclosing While statement.
14999 Successfully generated the compiler with the Intel 64-bit C
15002 ----------------------------------------
15003 Summary of changes for this label: 12_05_01
15005 1) ACPI CA Core Subsystem:
15007 The ACPI 2.0 CopyObject operator is fully implemented. This
15008 operator creates a new copy of an object (and is also used to
15009 bypass the "implicit conversion" mechanism of the Store operator.)
15011 The ACPI 2.0 semantics for the SizeOf operator are fully
15012 implemented. The change is that performing a SizeOf on a
15013 reference object causes an automatic dereference of the object to
15014 tha actual value before the size is evaluated. This behavior was
15015 undefined in ACPI 1.0.
15017 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
15018 have been implemented. The interrupt polarity and mode are now
15021 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
15022 appearing in Package objects were not properly converted to
15023 integers when the internal Package was converted to an external
15024 object (via the AcpiEvaluateObject interface.)
15026 Fixed a problem with the namespace object deletion mechanism for
15027 objects created by control methods. There were two parts to this
15028 problem: 1) Objects created during the initialization phase method
15029 parse were not being deleted, and 2) The object owner ID mechanism
15030 to track objects was broken.
15032 Fixed a problem where the use of the ASL Scope operator within a
15033 control method would result in an invalid opcode exception.
15035 Fixed a problem introduced in the previous label where the buffer
15036 length required for the _PRT structure was not being returned
15039 Code and Data Size: Current core subsystem library sizes are shown
15040 below. These are the code and data sizes for the acpica.lib
15041 produced by the Microsoft Visual C++ 6.0 compiler, and these
15042 values do not include any ACPI driver or OSPM code. The debug
15043 version of the code includes the debug output trace mechanism and
15044 has a larger code and data size. Note that these values will vary
15045 depending on the efficiency of the compiler and the compiler
15046 options used during generation.
15048 Previous Release (11_20_01)
15049 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15050 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15053 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
15054 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
15058 Updated all files to apply cleanly against 2.4.16.
15060 Added basic PCI Interrupt Routing Table (PRT) support for IA32
15061 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
15062 version supports both static and dyanmic PRT entries, but dynamic
15063 entries are treated as if they were static (not yet
15064 reconfigurable). Architecture- specific code to use this data is
15065 absent on IA32 but should be available shortly.
15067 Changed the initialization sequence to start the ACPI interpreter
15068 (acpi_init) prior to initialization of the PCI driver (pci_init)
15069 in init/main.c. This ordering is required to support PRT and
15070 facilitate other (future) enhancement. A side effect is that the
15071 ACPI bus driver and certain device drivers can no longer be loaded
15074 Modified the 'make menuconfig' options to allow PCI Interrupt
15075 Routing support to be included without the ACPI Bus and other
15078 3) ASL Compiler, version X2033:
15080 Fixed some issues with the use of the new CopyObject and
15081 DataTableRegion operators. Both are fully functional.
15083 ----------------------------------------
15084 Summary of changes for this label: 11_20_01
15086 20 November 2001. Summary of changes for this release.
15088 1) ACPI CA Core Subsystem:
15090 Updated Index support to match ACPI 2.0 semantics. Storing a
15091 Integer, String, or Buffer to an Index of a Buffer will store only
15092 the least-significant byte of the source to the Indexed buffer
15093 byte. Multiple writes are not performed.
15095 Fixed a problem where the access type used in an AccessAs ASL
15096 operator was not recorded correctly into the field object.
15098 Fixed a problem where ASL Event objects were created in a
15099 signalled state. Events are now created in an unsignalled state.
15101 The internal object cache is now purged after table loading and
15102 initialization to reduce the use of dynamic kernel memory -- on
15103 the assumption that object use is greatest during the parse phase
15104 of the entire table (versus the run-time use of individual control
15107 ACPI 2.0 variable-length packages are now fully operational.
15109 Code and Data Size: Code and Data optimizations have permitted new
15110 feature development with an actual reduction in the library size.
15111 Current core subsystem library sizes are shown below. These are
15112 the code and data sizes for the acpica.lib produced by the
15113 Microsoft Visual C++ 6.0 compiler, and these values do not include
15114 any ACPI driver or OSPM code. The debug version of the code
15115 includes the debug output trace mechanism and has a larger code
15116 and data size. Note that these values will vary depending on the
15117 efficiency of the compiler and the compiler options used during
15120 Previous Release (11_09_01):
15121 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15122 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15125 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
15126 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
15130 Enhanced the ACPI boot-time initialization code to allow the use
15131 of Local APIC tables for processor enumeration on IA-32, and to
15132 pave the way for a fully MPS-free boot (on SMP systems) in the
15133 near future. This functionality replaces
15134 arch/i386/kernel/acpitables.c, which was introduced in an earlier
15135 2.4.15-preX release. To enable this feature you must add
15136 "acpi_boot=on" to the kernel command line -- see the help entry
15137 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
15140 Restructured the configuration options to allow boot-time table
15141 parsing support without inclusion of the ACPI Interpreter (and
15144 NOTE: This release does not include fixes for the reported events,
15145 power-down, and thermal passive cooling issues (coming soon).
15149 Added additional typechecking for Fields within restricted access
15150 Operation Regions. All fields within EC and CMOS regions must be
15151 declared with ByteAcc. All fields withing SMBus regions must be
15152 declared with the BufferAcc access type.
15154 Fixed a problem where the listing file output of control methods
15155 no longer interleaved the actual AML code with the ASL source
15161 ----------------------------------------
15162 Summary of changes for this label: 11_09_01
15164 1) ACPI CA Core Subsystem:
15166 Implemented ACPI 2.0-defined support for writes to fields with a
15167 Buffer, String, or Integer source operand that is smaller than the
15168 target field. In these cases, the source operand is zero-extended
15169 to fill the target field.
15171 Fixed a problem where a Field starting bit offset (within the
15172 parent operation region) was calculated incorrectly if the
15174 alignment of the field differed from the access width. This
15175 affected CreateWordField, CreateDwordField, CreateQwordField, and
15176 possibly other fields that use the "AccessAny" keyword.
15178 Fixed a problem introduced in the 11_02_01 release where indirect
15179 stores through method arguments did not operate correctly.
15183 Implemented boot-time ACPI table parsing support
15184 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
15185 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
15186 legacy BIOS interfaces (e.g. MPS) for the configuration of system
15187 processors, memory, and interrupts during setup_arch(). Note that
15188 this patch does not include the required architecture-specific
15189 changes required to apply this information -- subsequent patches
15190 will be posted for both IA32 and IA64 to achieve this.
15192 Added low-level sleep support for IA32 platforms, courtesy of Pat
15193 Mochel. This allows IA32 systems to transition to/from various
15194 sleeping states (e.g. S1, S3), although the lack of a centralized
15195 driver model and power-manageable drivers will prevent its
15196 (successful) use on most systems.
15198 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
15199 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
15200 tables" option, etc.
15202 Increased the default timeout for the EC driver from 1ms to 10ms
15203 (1000 cycles of 10us) to try to address AE_TIME errors during EC
15206 ----------------------------------------
15207 Summary of changes for this label: 11_02_01
15209 1) ACPI CA Core Subsystem:
15211 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
15212 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
15215 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
15216 changes to support ACPI 2.0 Qword field access. Read/Write
15217 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
15218 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
15219 the value parameter for the address space handler interface is now
15220 an ACPI_INTEGER. OSL implementations of these interfaces must now
15221 handle the case where the Width parameter is 64.
15223 Index Fields: Fixed a problem where unaligned bit assembly and
15224 disassembly for IndexFields was not supported correctly.
15226 Index and Bank Fields: Nested Index and Bank Fields are now
15227 supported. During field access, a check is performed to ensure
15228 that the value written to an Index or Bank register is not out of
15229 the range of the register. The Index (or Bank) register is
15230 written before each access to the field data. Future support will
15231 include allowing individual IndexFields to be wider than the
15232 DataRegister width.
15234 Fields: Fixed a problem where the AML interpreter was incorrectly
15235 attempting to write beyond the end of a Field/OpRegion. This was
15236 a boundary case that occurred when a DWORD field was written to a
15237 BYTE access OpRegion, forcing multiple writes and causing the
15238 interpreter to write one datum too many.
15240 Fields: Fixed a problem with Field/OpRegion access where the
15241 starting bit address of a field was incorrectly calculated if the
15242 current access type was wider than a byte (WordAcc, DwordAcc, or
15245 Fields: Fixed a problem where forward references to individual
15246 FieldUnits (individual Field names within a Field definition) were
15247 not resolved during the AML table load.
15249 Fields: Fixed a problem where forward references from a Field
15250 definition to the parent Operation Region definition were not
15251 resolved during the AML table load.
15253 Fields: Duplicate FieldUnit names within a scope are now detected
15254 during AML table load.
15256 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
15257 returned an incorrect name for the root node.
15259 Code and Data Size: Code and Data optimizations have permitted new
15260 feature development with an actual reduction in the library size.
15261 Current core subsystem library sizes are shown below. These are
15262 the code and data sizes for the acpica.lib produced by the
15263 Microsoft Visual C++ 6.0 compiler, and these values do not include
15264 any ACPI driver or OSPM code. The debug version of the code
15265 includes the debug output trace mechanism and has a larger code
15266 and data size. Note that these values will vary depending on the
15267 efficiency of the compiler and the compiler options used during
15270 Previous Release (10_18_01):
15271 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15272 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15275 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
15276 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
15280 Improved /proc processor output (Pavel Machek) Re-added
15281 MODULE_LICENSE("GPL") to all modules.
15283 3) ASL Compiler version X2030:
15285 Duplicate FieldUnit names within a scope are now detected and
15290 Programmer Reference updated to reflect OSL and address space
15291 handler interface changes described above.
15293 ----------------------------------------
15294 Summary of changes for this label: 10_18_01
15296 ACPI CA Core Subsystem:
15298 Fixed a problem with the internal object reference count mechanism
15299 that occasionally caused premature object deletion. This resolves
15300 all of the outstanding problem reports where an object is deleted
15301 in the middle of an interpreter evaluation. Although this problem
15302 only showed up in rather obscure cases, the solution to the
15303 problem involved an adjustment of all reference counts involving
15304 objects attached to namespace nodes.
15306 Fixed a problem with Field support in the interpreter where
15307 writing to an aligned field whose length is an exact multiple (2
15308 or greater) of the field access granularity would cause an attempt
15309 to write beyond the end of the field.
15311 The top level AML opcode execution functions within the
15312 interpreter have been renamed with a more meaningful and
15313 consistent naming convention. The modules exmonad.c and
15314 exdyadic.c were eliminated. New modules are exoparg1.c,
15315 exoparg2.c, exoparg3.c, and exoparg6.c.
15317 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
15319 Fixed a problem where the AML debugger was causing some internal
15320 objects to not be deleted during subsystem termination.
15322 Fixed a problem with the external AcpiEvaluateObject interface
15323 where the subsystem would fault if the named object to be
15324 evaluated refered to a constant such as Zero, Ones, etc.
15326 Fixed a problem with IndexFields and BankFields where the
15327 subsystem would fault if the index, data, or bank registers were
15328 not defined in the same scope as the field itself.
15330 Added printf format string checking for compilers that support
15331 this feature. Corrected more than 50 instances of issues with
15332 format specifiers within invocations of ACPI_DEBUG_PRINT
15333 throughout the core subsystem code.
15335 The ASL "Revision" operator now returns the ACPI support level
15336 implemented in the core - the value "2" since the ACPI 2.0 support
15337 is more than 50% implemented.
15339 Enhanced the output of the AML debugger "dump namespace" command
15340 to output in a more human-readable form.
15342 Current core subsystem library code sizes are shown below. These
15344 are the code and data sizes for the acpica.lib produced by the
15345 Microsoft Visual C++ 6.0 compiler, and these values do not include
15346 any ACPI driver or OSPM code. The debug version of the code
15347 includes the full debug trace mechanism -- leading to a much
15349 larger code and data size. Note that these values will vary
15350 depending on the efficiency of the compiler and the compiler
15351 options used during generation.
15353 Previous Label (09_20_01):
15354 Non-Debug Version: 65K Code, 5K Data, 70K Total
15355 Debug Version: 138K Code, 58K Data, 196K Total
15359 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
15360 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
15364 Implemented a "Bad BIOS Blacklist" to track machines that have
15365 known ASL/AML problems.
15367 Enhanced the /proc interface for the thermal zone driver and added
15368 support for _HOT (the critical suspend trip point). The 'info'
15369 file now includes threshold/policy information, and allows setting
15370 of _SCP (cooling preference) and _TZP (polling frequency) values
15371 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
15372 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
15373 preference to the passive/quiet mode (if supported by the ASL).
15375 Implemented a workaround for a gcc bug that resuted in an OOPs
15376 when loading the control method battery driver.
15378 ----------------------------------------
15379 Summary of changes for this label: 09_20_01
15381 ACPI CA Core Subsystem:
15383 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
15384 modified to allow individual GPE levels to be flagged as wake-
15385 enabled (i.e., these GPEs are to remain enabled when the platform
15388 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
15389 support wake-enabled GPEs. This means that upon entering the
15390 sleep state, all GPEs that are not wake-enabled are disabled.
15391 When leaving the sleep state, these GPEs are reenabled.
15393 A local double-precision divide/modulo module has been added to
15394 enhance portability to OS kernels where a 64-bit math library is
15395 not available. The new module is "utmath.c".
15397 Several optimizations have been made to reduce the use of CPU
15398 stack. Originally over 2K, the maximum stack usage is now below
15399 2K at 1860 bytes (1.82k)
15401 Fixed a problem with the AcpiGetFirmwareTable interface where the
15402 root table pointer was not mapped into a logical address properly.
15404 Fixed a problem where a NULL pointer was being dereferenced in the
15405 interpreter code for the ASL Notify operator.
15407 Fixed a problem where the use of the ASL Revision operator
15408 returned an error. This operator now returns the current version
15409 of the ACPI CA core subsystem.
15411 Fixed a problem where objects passed as control method parameters
15412 to AcpiEvaluateObject were always deleted at method termination.
15413 However, these objects may end up being stored into the namespace
15414 by the called method. The object reference count mechanism was
15415 applied to these objects instead of a force delete.
15417 Fixed a problem where static strings or buffers (contained in the
15418 AML code) that are declared as package elements within the ASL
15419 code could cause a fault because the interpreter would attempt to
15420 delete them. These objects are now marked with the "static
15421 object" flag to prevent any attempt to delete them.
15423 Implemented an interpreter optimization to use operands directly
15424 from the state object instead of extracting the operands to local
15425 variables. This reduces stack use and code size, and improves
15428 The module exxface.c was eliminated as it was an unnecessary extra
15431 Current core subsystem library code sizes are shown below. These
15432 are the code and data sizes for the acpica.lib produced by the
15433 Microsoft Visual C++ 6.0 compiler, and these values do not include
15434 any ACPI driver or OSPM code. The debug version of the code
15435 includes the full debug trace mechanism -- leading to a much
15436 larger code and data size. Note that these values will vary
15437 depending on the efficiency of the compiler and the compiler
15438 options used during generation.
15440 Non-Debug Version: 65K Code, 5K Data, 70K Total
15441 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
15442 Total (Previously 195K)
15446 Support for ACPI 2.0 64-bit integers has been added. All ACPI
15447 Integer objects are now 64 bits wide
15449 All Acpi data types and structures are now in lower case. Only
15450 Acpi macros are upper case for differentiation.
15454 Changes to the external interfaces as described above.
15456 ----------------------------------------
15457 Summary of changes for this label: 08_31_01
15459 ACPI CA Core Subsystem:
15461 A bug with interpreter implementation of the ASL Divide operator
15462 was found and fixed. The implicit function return value (not the
15463 explicit store operands) was returning the remainder instead of
15464 the quotient. This was a longstanding bug and it fixes several
15465 known outstanding issues on various platforms.
15467 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
15468 been further optimized for size. There are 700 invocations of the
15469 DEBUG_PRINT macro alone, so each optimization reduces the size of
15470 the debug version of the subsystem significantly.
15472 A stack trace mechanism has been implemented. The maximum stack
15473 usage is about 2K on 32-bit platforms. The debugger command "stat
15474 stack" will display the current maximum stack usage.
15476 All public symbols and global variables within the subsystem are
15477 now prefixed with the string "Acpi". This keeps all of the
15478 symbols grouped together in a kernel map, and avoids conflicts
15479 with other kernel subsystems.
15481 Most of the internal fixed lookup tables have been moved into the
15482 code segment via the const operator.
15484 Several enhancements have been made to the interpreter to both
15485 reduce the code size and improve performance.
15487 Current core subsystem library code sizes are shown below. These
15488 are the code and data sizes for the acpica.lib produced by the
15489 Microsoft Visual C++ 6.0 compiler, and these values do not include
15490 any ACPI driver or OSPM code. The debug version of the code
15491 includes the full debug trace mechanism which contains over 700
15492 invocations of the DEBUG_PRINT macro, 500 function entry macro
15493 invocations, and over 900 function exit macro invocations --
15494 leading to a much larger code and data size. Note that these
15495 values will vary depending on the efficiency of the compiler and
15496 the compiler options used during generation.
15498 Non-Debug Version: 64K Code, 5K Data, 69K Total
15499 Debug Version: 137K Code, 58K Data, 195K Total
15503 Implemented wbinvd() macro, pending a kernel-wide definition.
15505 Fixed /proc/acpi/event to handle poll() and short reads.
15507 ASL Compiler, version X2026:
15509 Fixed a problem introduced in the previous label where the AML
15511 code emitted for package objects produced packages with zero
15514 ----------------------------------------
15515 Summary of changes for this label: 08_16_01
15517 ACPI CA Core Subsystem:
15519 The following ACPI 2.0 ASL operators have been implemented in the
15520 AML interpreter (These are already supported by the Intel ASL
15521 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
15522 ToBuffer. Support for 64-bit AML constants is implemented in the
15523 AML parser, debugger, and disassembler.
15525 The internal memory tracking mechanism (leak detection code) has
15526 been upgraded to reduce the memory overhead (a separate tracking
15527 block is no longer allocated for each memory allocation), and now
15528 supports all of the internal object caches.
15530 The data structures and code for the internal object caches have
15531 been coelesced and optimized so that there is a single cache and
15532 memory list data structure and a single group of functions that
15533 implement generic cache management. This has reduced the code
15534 size in both the debug and release versions of the subsystem.
15536 The DEBUG_PRINT macro(s) have been optimized for size and replaced
15537 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
15538 different, because it generates a single call to an internal
15539 function. This results in a savings of about 90 bytes per
15540 invocation, resulting in an overall code and data savings of about
15541 16% in the debug version of the subsystem.
15545 Fixed C3 disk corruption problems and re-enabled C3 on supporting
15548 Integrated low-level sleep code by Patrick Mochel.
15550 Further tweaked source code Linuxization.
15556 Support for ACPI 2.0 variable length packages is fixed/completed.
15558 Fixed a problem where the optional length parameter for the ACPI
15559 2.0 ToString operator.
15561 Fixed multiple extraneous error messages when a syntax error is
15562 detected within the declaration line of a control method.
15564 ----------------------------------------
15565 Summary of changes for this label: 07_17_01
15567 ACPI CA Core Subsystem:
15569 Added a new interface named AcpiGetFirmwareTable to obtain any
15570 ACPI table via the ACPI signature. The interface can be called at
15571 any time during kernel initialization, even before the kernel
15572 virtual memory manager is initialized and paging is enabled. This
15573 allows kernel subsystems to obtain ACPI tables very early, even
15574 before the ACPI CA subsystem is initialized.
15576 Fixed a problem where Fields defined with the AnyAcc attribute
15577 could be resolved to the incorrect address under the following
15578 conditions: 1) the field width is larger than 8 bits and 2) the
15579 parent operation region is not defined on a DWORD boundary.
15581 Fixed a problem where the interpreter is not being locked during
15582 namespace initialization (during execution of the _INI control
15583 methods), causing an error when an attempt is made to release it
15586 ACPI 2.0 support in the AML Interpreter has begun and will be
15587 ongoing throughout the rest of this year. In this label, The Mod
15588 operator is implemented.
15590 Added a new data type to contain full PCI addresses named
15591 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
15592 and Function values.
15596 Enhanced the Linux version of the source code to change most
15597 capitalized ACPI type names to lowercase. For example, all
15598 instances of ACPI_STATUS are changed to acpi_status. This will
15599 result in a large diff, but the change is strictly cosmetic and
15600 aligns the CA code closer to the Linux coding standard.
15604 The interfaces to the PCI configuration space have been changed to
15605 add the PCI Segment number and to split the single 32-bit combined
15606 DeviceFunction field into two 16-bit fields. This was
15607 accomplished by moving the four values that define an address in
15608 PCI configuration space (segment, bus, device, and function) to
15609 the new ACPI_PCI_ID structure.
15611 The changes to the PCI configuration space interfaces led to a
15612 reexamination of the complete set of address space access
15613 interfaces for PCI, I/O, and Memory. The previously existing 18
15614 interfaces have proven difficult to maintain (any small change
15615 must be propagated across at least 6 interfaces) and do not easily
15616 allow for future expansion to 64 bits if necessary. Also, on some
15617 systems, it would not be appropriate to demultiplex the access
15618 width (8, 16, 32,or 64) before calling the OSL if the
15619 corresponding native OS interfaces contain a similar access width
15620 parameter. For these reasons, the 18 address space interfaces
15621 have been replaced by these 6 new ones:
15623 AcpiOsReadPciConfiguration
15624 AcpiOsWritePciConfiguration
15630 Added a new interface named AcpiOsGetRootPointer to allow the OSL
15631 to perform the platform and/or OS-specific actions necessary to
15632 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
15633 interface will simply call down to the CA core to perform the low-
15634 memory search for the table. On IA-64, the RSDP is obtained from
15635 EFI. Migrating this interface to the OSL allows the CA core to
15637 remain OS and platform independent.
15639 Added a new interface named AcpiOsSignal to provide a generic
15640 "function code and pointer" interface for various miscellaneous
15641 signals and notifications that must be made to the host OS. The
15642 first such signals are intended to support the ASL Fatal and
15643 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
15644 interface has been obsoleted.
15646 The definition of the AcpiFormatException interface has been
15647 changed to simplify its use. The caller no longer must supply a
15648 buffer to the call; A pointer to a const string is now returned
15649 directly. This allows the call to be easily used in printf
15650 statements, etc. since the caller does not have to manage a local
15654 ASL Compiler, Version X2025:
15656 The ACPI 2.0 Switch/Case/Default operators have been implemented
15657 and are fully functional. They will work with all ACPI 1.0
15658 interpreters, since the operators are simply translated to If/Else
15661 The ACPI 2.0 ElseIf operator is implemented and will also work
15662 with 1.0 interpreters, for the same reason.
15664 Implemented support for ACPI 2.0 variable-length packages. These
15665 packages have a separate opcode, and their size is determined by
15666 the interpreter at run-time.
15668 Documentation The ACPI CA Programmer Reference has been updated to
15669 reflect the new interfaces and changes to existing interfaces.
15671 ------------------------------------------
15672 Summary of changes for this label: 06_15_01
15674 ACPI CA Core Subsystem:
15676 Fixed a problem where a DWORD-accessed field within a Buffer
15677 object would get its byte address inadvertently rounded down to
15678 the nearest DWORD. Buffers are always Byte-accessible.
15680 ASL Compiler, version X2024:
15682 Fixed a problem where the Switch() operator would either fault or
15683 hang the compiler. Note however, that the AML code for this ACPI
15684 2.0 operator is not yet implemented.
15686 Compiler uses the new AcpiOsGetTimer interface to obtain compile
15689 Implementation of the CreateField operator automatically converts
15690 a reference to a named field within a resource descriptor from a
15691 byte offset to a bit offset if required.
15693 Added some missing named fields from the resource descriptor
15694 support. These are the names that are automatically created by the
15695 compiler to reference fields within a descriptor. They are only
15696 valid at compile time and are not passed through to the AML
15699 Resource descriptor named fields are now typed as Integers and
15700 subject to compile-time typechecking when used in expressions.
15702 ------------------------------------------
15703 Summary of changes for this label: 05_18_01
15705 ACPI CA Core Subsystem:
15707 Fixed a couple of problems in the Field support code where bits
15708 from adjacent fields could be returned along with the proper field
15709 bits. Restructured the field support code to improve performance,
15710 readability and maintainability.
15712 New DEBUG_PRINTP macro automatically inserts the procedure name
15713 into the output, saving hundreds of copies of procedure name
15714 strings within the source, shrinking the memory footprint of the
15715 debug version of the core subsystem.
15717 Source Code Structure:
15719 The source code directory tree was restructured to reflect the
15720 current organization of the component architecture. Some files
15721 and directories have been moved and/or renamed.
15725 Fixed leaking kacpidpc processes.
15727 Fixed queueing event data even when /proc/acpi/event is not
15730 ASL Compiler, version X2020:
15732 Memory allocation performance enhancement - over 24X compile time
15733 improvement on large ASL files. Parse nodes and namestring
15734 buffers are now allocated from a large internal compiler buffer.
15736 The temporary .SRC file is deleted unless the "-s" option is
15739 The "-d" debug output option now sends all output to the .DBG file
15740 instead of the console.
15742 "External" second parameter is now optional
15744 "ElseIf" syntax now properly allows the predicate
15746 Last operand to "Load" now recognized as a Target operand
15748 Debug object can now be used anywhere as a normal object.
15750 ResourceTemplate now returns an object of type BUFFER
15752 EISAID now returns an object of type INTEGER
15754 "Index" now works with a STRING operand
15756 "LoadTable" now accepts optional parameters
15758 "ToString" length parameter is now optional
15760 "Interrupt (ResourceType," parse error fixed.
15762 "Register" with a user-defined region space parse error fixed
15764 Escaped backslash at the end of a string ("\\") scan/parse error
15767 "Revision" is now an object of type INTEGER.
15771 ------------------------------------------
15772 Summary of changes for this label: 05_02_01
15776 /proc/acpi/event now blocks properly.
15778 Removed /proc/sys/acpi. You can still dump your DSDT from
15781 ACPI CA Core Subsystem:
15783 Fixed a problem introduced in the previous label where some of the
15784 "small" resource descriptor types were not recognized.
15786 Improved error messages for the case where an ASL Field is outside
15787 the range of the parent operation region.
15789 ASL Compiler, version X2018:
15792 Added error detection for ASL Fields that extend beyond the length
15793 of the parent operation region (only if the length of the region
15794 is known at compile time.) This includes fields that have a
15795 minimum access width that is smaller than the parent region, and
15796 individual field units that are partially or entirely beyond the
15797 extent of the parent.
15801 ------------------------------------------
15802 Summary of changes for this label: 04_27_01
15804 ACPI CA Core Subsystem:
15806 Fixed a problem where the namespace mutex could be released at the
15807 wrong time during execution of AcpiRemoveAddressSpaceHandler.
15809 Added optional thread ID output for debug traces, to simplify
15810 debugging of multiple threads. Added context switch notification
15811 when the debug code realizes that a different thread is now
15812 executing ACPI code.
15814 Some additional external data types have been prefixed with the
15815 string "ACPI_" for consistency. This may effect existing code.
15816 The data types affected are the external callback typedefs - e.g.,
15818 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
15822 Fixed an issue with the OSL semaphore implementation where a
15823 thread was waking up with an error from receiving a SIGCHLD
15826 Linux version of ACPI CA now uses the system C library for string
15827 manipulation routines instead of a local implementation.
15829 Cleaned up comments and removed TBDs.
15831 ASL Compiler, version X2017:
15833 Enhanced error detection and reporting for all file I/O
15838 Programmer Reference updated to version 1.06.
15842 ------------------------------------------
15843 Summary of changes for this label: 04_13_01
15845 ACPI CA Core Subsystem:
15847 Restructured support for BufferFields and RegionFields.
15848 BankFields support is now fully operational. All known 32-bit
15849 limitations on field sizes have been removed. Both BufferFields
15850 and (Operation) RegionFields are now supported by the same field
15853 Resource support now supports QWORD address and IO resources. The
15854 16/32/64 bit address structures and the Extended IRQ structure
15855 have been changed to properly handle Source Resource strings.
15857 A ThreadId of -1 is now used to indicate a "mutex not acquired"
15858 condition internally and must never be returned by AcpiOsThreadId.
15859 This reserved value was changed from 0 since Unix systems allow a
15864 Driver code reorganized to enhance portability
15866 Added a kernel configuration option to control ACPI_DEBUG
15868 Fixed the EC driver to honor _GLK.
15870 ASL Compiler, version X2016:
15872 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
15873 address space was set to 0, not 0x7f as it should be.
15875 ------------------------------------------
15876 Summary of changes for this label: 03_13_01
15878 ACPI CA Core Subsystem:
15880 During ACPI initialization, the _SB_._INI method is now run if
15883 Notify handler fix - notifies are deferred until the parent method
15884 completes execution. This fixes the "mutex already acquired"
15885 issue seen occasionally.
15887 Part of the "implicit conversion" rules in ACPI 2.0 have been
15888 found to cause compatibility problems with existing ASL/AML. The
15889 convert "result-to-target-type" implementation has been removed
15890 for stores to method Args and Locals. Source operand conversion
15891 is still fully implemented. Possible changes to ACPI 2.0
15892 specification pending.
15894 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
15897 Fix for compiler warnings for 64-bit compiles.
15901 /proc output aligned for easier parsing.
15903 Release-version compile problem fixed.
15905 New kernel configuration options documented in Configure.help.
15907 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
15912 Power resource driver integrated with bus manager.
15914 Fixed kernel fault during active cooling for thermal zones.
15918 The source code tree has been restructured.
15922 ------------------------------------------
15923 Summary of changes for this label: 03_02_01
15925 Linux OS Services Layer (OSL):
15927 Major revision of all Linux-specific code.
15929 Modularized all ACPI-specific drivers.
15931 Added new thermal zone and power resource drivers.
15933 Revamped /proc interface (new functionality is under /proc/acpi).
15935 New kernel configuration options.
15937 Linux known issues:
15939 New kernel configuration options not documented in Configure.help
15943 Module dependencies not currently implemented. If used, they
15944 should be loaded in this order: busmgr, power, ec, system,
15945 processor, battery, ac_adapter, button, thermal.
15947 Modules will not load if CONFIG_MODVERSION is set.
15949 IBM 600E - entering S5 may reboot instead of shutting down.
15951 IBM 600E - Sleep button may generate "Invalid <NULL> context"
15954 Some systems may fail with "execution mutex already acquired"
15957 ACPI CA Core Subsystem:
15959 Added a new OSL Interface, AcpiOsGetThreadId. This was required
15960 for the deadlock detection code. Defined to return a non-zero, 32-
15961 bit thread ID for the currently executing thread. May be a non-
15962 zero constant integer on single-thread systems.
15964 Implemented deadlock detection for internal subsystem mutexes. We
15965 may add conditional compilation for this code (debug only) later.
15967 ASL/AML Mutex object semantics are now fully supported. This
15968 includes multiple acquires/releases by owner and support for the
15970 Mutex SyncLevel parameter.
15972 A new "Force Release" mechanism automatically frees all ASL
15973 Mutexes that have been acquired but not released when a thread
15974 exits the interpreter. This forces conformance to the ACPI spec
15975 ("All mutexes must be released when an invocation exits") and
15976 prevents deadlocked ASL threads. This mechanism can be expanded
15977 (later) to monitor other resource acquisitions if OEM ASL code
15978 continues to misbehave (which it will).
15980 Several new ACPI exception codes have been added for the Mutex
15983 Recursive method calls are now allowed and supported (the ACPI
15984 spec does in fact allow recursive method calls.) The number of
15985 recursive calls is subject to the restrictions imposed by the
15986 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
15989 Implemented support for the SyncLevel parameter for control
15990 methods (ACPI 2.0 feature)
15992 Fixed a deadlock problem when multiple threads attempted to use
15995 Fixed a problem where the string length of a String package
15996 element was not always set in a package returned from
15997 AcpiEvaluateObject.
15999 Fixed a problem where the length of a String package element was
16000 not always included in the length of the overall package returned
16001 from AcpiEvaluateObject.
16003 Added external interfaces (Acpi*) to the ACPI debug memory
16004 manager. This manager keeps a list of all outstanding
16005 allocations, and can therefore detect memory leaks and attempts to
16006 free memory blocks more than once. Useful for code such as the
16007 power manager, etc. May not be appropriate for device drivers.
16008 Performance with the debug code enabled is slow.
16010 The ACPI Global Lock is now an optional hardware element.
16012 ASL Compiler Version X2015:
16014 Integrated changes to allow the compiler to be generated on
16015 multiple platforms.
16017 Linux makefile added to generate the compiler on Linux
16021 All platform-specific headers have been moved to their own
16022 subdirectory, Include/Platform.
16024 New source file added, Interpreter/ammutex.c
16026 New header file, Include/acstruct.h
16030 The programmer reference has been updated for the following new
16031 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
16033 ------------------------------------------
16034 Summary of changes for this label: 02_08_01
16036 Core ACPI CA Subsystem: Fixed a problem where an error was
16037 incorrectly returned if the return resource buffer was larger than
16038 the actual data (in the resource interfaces).
16040 References to named objects within packages are resolved to the
16042 full pathname string before packages are returned directly (via
16043 the AcpiEvaluateObject interface) or indirectly via the resource
16046 Linux OS Services Layer (OSL):
16048 Improved /proc battery interface.
16051 Added C-state debugging output and other miscellaneous fixes.
16053 ASL Compiler Version X2014:
16055 All defined method arguments can now be used as local variables,
16056 including the ones that are not actually passed in as parameters.
16057 The compiler tracks initialization of the arguments and issues an
16058 exception if they are used without prior assignment (just like
16061 The -o option now specifies a filename prefix that is used for all
16062 output files, including the AML output file. Otherwise, the
16063 default behavior is as follows: 1) the AML goes to the file
16064 specified in the DSDT. 2) all other output files use the input
16065 source filename as the base.
16067 ------------------------------------------
16068 Summary of changes for this label: 01_25_01
16070 Core ACPI CA Subsystem: Restructured the implementation of object
16071 store support within the interpreter. This includes support for
16072 the Store operator as well as any ASL operators that include a
16075 Partially implemented support for Implicit Result-to-Target
16076 conversion. This is when a result object is converted on the fly
16077 to the type of an existing target object. Completion of this
16078 support is pending further analysis of the ACPI specification
16079 concerning this matter.
16081 CPU-specific code has been removed from the subsystem (hardware
16084 New Power Management Timer functions added
16086 Linux OS Services Layer (OSL): Moved system state transition code
16087 to the core, fixed it, and modified Linux OSL accordingly.
16089 Fixed C2 and C3 latency calculations.
16092 We no longer use the compilation date for the version message on
16093 initialization, but retrieve the version from AcpiGetSystemInfo().
16095 Incorporated for fix Sony VAIO machines.
16097 Documentation: The Programmer Reference has been updated and
16101 ASL Compiler: Version X2013: Fixed a problem where the line
16102 numbering and error reporting could get out of sync in the
16103 presence of multiple include files.
16105 ------------------------------------------
16106 Summary of changes for this label: 01_15_01
16108 Core ACPI CA Subsystem:
16110 Implemented support for type conversions in the execution of the
16111 ASL Concatenate operator (The second operand is converted to
16112 match the type of the first operand before concatenation.)
16114 Support for implicit source operand conversion is partially
16115 implemented. The ASL source operand types Integer, Buffer, and
16116 String are freely interchangeable for most ASL operators and are
16117 converted by the interpreter on the fly as required. Implicit
16118 Target operand conversion (where the result is converted to the
16119 target type before storing) is not yet implemented.
16121 Support for 32-bit and 64-bit BCD integers is implemented.
16123 Problem fixed where a field read on an aligned field could cause a
16124 read past the end of the field.
16126 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
16127 does not return a value, but the caller expects one. (The ASL
16128 compiler flags this as a warning.)
16133 1. Static typechecking of all operands is implemented. This
16134 prevents the use of invalid objects (such as using a Package where
16135 an Integer is required) at compile time instead of at interpreter
16137 2. The ASL source line is printed with ALL errors and warnings.
16138 3. Bug fix for source EOF without final linefeed.
16139 4. Debug option is split into a parse trace and a namespace trace.
16140 5. Namespace output option (-n) includes initial values for
16141 integers and strings.
16142 6. Parse-only option added for quick syntax checking.
16143 7. Compiler checks for duplicate ACPI name declarations
16146 1. Relaxed typechecking to allow interchangeability between
16147 strings, integers, and buffers. These types are now converted by
16148 the interpreter at runtime.
16149 2. Compiler reports time taken by each internal subsystem in the
16153 ------------------------------------------
16154 Summary of changes for this label: 12_14_00
16158 This is the first official release of the compiler. Since the
16159 compiler requires elements of the Core Subsystem, this label
16160 synchronizes everything.
16162 ------------------------------------------
16163 Summary of changes for this label: 12_08_00
16166 Fixed a problem where named references within the ASL definition
16167 of both OperationRegions and CreateXXXFields did not work
16168 properly. The symptom was an AE_AML_OPERAND_TYPE during
16169 initialization of the region/field. This is similar (but not
16170 related internally) to the problem that was fixed in the last
16173 Implemented both 32-bit and 64-bit support for the BCD ASL
16174 functions ToBCD and FromBCD.
16176 Updated all legal headers to include "2000" in the copyright
16179 ------------------------------------------
16180 Summary of changes for this label: 12_01_00
16182 Fixed a problem where method invocations within the ASL definition
16183 of both OperationRegions and CreateXXXFields did not work
16184 properly. The symptom was an AE_AML_OPERAND_TYPE during
16185 initialization of the region/field:
16187 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
16188 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
16191 Fixed a problem where operators with more than one nested
16192 subexpression would fail. The symptoms were varied, by mostly
16193 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
16194 problem that has gone unnoticed until now.
16196 Subtract (Add (1,2), Multiply (3,4))
16198 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
16199 previous build (The prefix part of a relative path was handled
16202 Fixed a problem where Operation Region initialization failed if
16203 the operation region name was a "namepath" instead of a simple
16204 "nameseg". Symptom was an AE_NO_OPERAND error.
16206 Fixed a problem where an assignment to a local variable via the
16207 indirect RefOf mechanism only worked for the first such
16208 assignment. Subsequent assignments were ignored.
16210 ------------------------------------------
16211 Summary of changes for this label: 11_15_00
16213 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
16214 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
16215 the AML interpreter does NOT have support for the new 2.0 ASL
16216 grammar terms at this time.
16218 All ACPI hardware access is via the GAS structures in the ACPI 2.0
16221 All physical memory addresses across all platforms are now 64 bits
16222 wide. Logical address width remains dependent on the platform
16225 AcpiOsMapMemory interface changed to a 64-bit physical address.
16227 The AML interpreter integer size is now 64 bits, as per the ACPI
16230 For backwards compatibility with ACPI 1.0, ACPI tables with a
16231 revision number less than 2 use 32-bit integers only.
16233 Fixed a problem where the evaluation of OpRegion operands did not
16234 always resolve them to numbers properly.
16236 ------------------------------------------
16237 Summary of changes for this label: 10_20_00
16239 Fix for CBN_._STA issue. This fix will allow correct access to
16240 CBN_ OpRegions when the _STA returns 0x8.
16242 Support to convert ACPI constants (Ones, Zeros, One) to actual
16243 values before a package object is returned
16245 Fix for method call as predicate to if/while construct causing
16246 incorrect if/while behavior
16248 Fix for Else block package lengths sometimes calculated wrong (if
16251 Fix for Processor object length field, was always zero
16253 Table load abort if FACP sanity check fails
16255 Fix for problem with Scope(name) if name already exists
16257 Warning emitted if a named object referenced cannot be found
16258 (resolved) during method execution.
16264 ------------------------------------------
16265 Summary of changes for this label: 9_29_00
16267 New table initialization interfaces: AcpiInitializeSubsystem no
16268 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
16269 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
16270 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
16273 Note: These interface changes require changes to all existing OSDs
16275 The PCI_Config default address space handler is always installed
16276 at the root namespace object.
16278 -------------------------------------------
16279 Summary of changes for this label: 09_15_00
16281 The new initialization architecture is implemented. New
16282 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
16283 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
16285 (Namespace is automatically loaded when a table is loaded)
16287 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
16288 52 bytes to 32 bytes. There is usually one of these for every
16289 namespace object, so the memory savings is significant.
16291 Implemented just-in-time evaluation of the CreateField operators.
16293 Bug fixes for IA-64 support have been integrated.
16295 Additional code review comments have been implemented
16297 The so-called "third pass parse" has been replaced by a final walk
16298 through the namespace to initialize all operation regions (address
16299 spaces) and fields that have not yet been initialized during the
16300 execution of the various _INI and REG methods.
16302 New file - namespace/nsinit.c
16304 -------------------------------------------
16305 Summary of changes for this label: 09_01_00
16307 Namespace manager data structures have been reworked to change the
16308 primary object from a table to a single object. This has
16309 resulted in dynamic memory savings of 3X within the namespace and
16310 2X overall in the ACPI CA subsystem.
16312 Fixed problem where the call to AcpiEvFindPciRootBuses was
16313 inadvertently left commented out.
16315 Reduced the warning count when generating the source with the GCC
16318 Revision numbers added to each module header showing the
16319 SourceSafe version of the file. Please refer to this version
16320 number when giving us feedback or comments on individual modules.
16322 The main object types within the subsystem have been renamed to
16323 clarify their purpose:
16325 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
16326 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
16327 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
16329 NOTE: no changes to the initialization sequence are included in
16332 -------------------------------------------
16333 Summary of changes for this label: 08_23_00
16335 Fixed problem where TerminateControlMethod was being called
16336 multiple times per method
16338 Fixed debugger problem where single stepping caused a semaphore to
16341 Improved performance through additional parse object caching -
16342 added ACPI_EXTENDED_OP type
16344 -------------------------------------------
16345 Summary of changes for this label: 08_10_00
16347 Parser/Interpreter integration: Eliminated the creation of
16348 complete parse trees for ACPI tables and control methods.
16349 Instead, parse subtrees are created and then deleted as soon as
16350 they are processed (Either entered into the namespace or executed
16351 by the interpreter). This reduces the use of dynamic kernel
16352 memory significantly. (about 10X)
16354 Exception codes broken into classes and renumbered. Be sure to
16355 recompile all code that includes acexcep.h. Hopefully we won't
16356 have to renumber the codes again now that they are split into
16357 classes (environment, programmer, AML code, ACPI table, and
16360 Fixed some additional alignment issues in the Resource Manager
16363 Implemented semaphore tracking in the AcpiExec utility, and fixed
16364 several places where mutexes/semaphores were being unlocked
16365 without a corresponding lock operation. There are no known
16366 semaphore or mutex "leaks" at this time.
16368 Fixed the case where an ASL Return operator is used to return an
16371 -------------------------------------------
16372 Summary of changes for this label: 07_28_00
16374 Fixed a problem with the way addresses were calculated in
16375 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
16376 manifested itself when a Field was created with WordAccess or
16377 DwordAccess, but the field unit defined within the Field was less
16379 than a Word or Dword.
16381 Fixed a problem in AmlDumpOperands() module's loop to pull
16382 operands off of the operand stack to display information. The
16383 problem manifested itself as a TLB error on 64-bit systems when
16384 accessing an operand stack with two or more operands.
16386 Fixed a problem with the PCI configuration space handlers where
16387 context was getting confused between accesses. This required a
16388 change to the generic address space handler and address space
16389 setup definitions. Handlers now get both a global handler context
16390 (this is the one passed in by the user when executing
16391 AcpiInstallAddressSpaceHandler() and a specific region context
16392 that is unique to each region (For example, the _ADR, _SEG and
16393 _BBN values associated with a specific region). The generic
16394 function definitions have changed to the following:
16396 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
16397 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
16398 *HandlerContext, // This used to be void *Context void
16399 *RegionContext); // This is an additional parameter
16401 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
16402 RegionHandle, UINT32 Function, void *HandlerContext, void
16403 **RegionContext); // This used to be **ReturnContext
16405 -------------------------------------------
16406 Summary of changes for this label: 07_21_00
16408 Major file consolidation and rename. All files within the
16409 interpreter have been renamed as well as most header files. This
16410 was done to prevent collisions with existing files in the host
16411 OSs -- filenames such as "config.h" and "global.h" seem to be
16412 quite common. The VC project files have been updated. All
16413 makefiles will require modification.
16415 The parser/interpreter integration continues in Phase 5 with the
16416 implementation of a complete 2-pass parse (the AML is parsed
16417 twice) for each table; This avoids the construction of a huge
16418 parse tree and therefore reduces the amount of dynamic memory
16419 required by the subsystem. Greater use of the parse object cache
16420 means that performance is unaffected.
16422 Many comments from the two code reviews have been rolled in.
16424 The 64-bit alignment support is complete.
16426 -------------------------------------------
16427 Summary of changes for this label: 06_30_00
16429 With a nod and a tip of the hat to the technology of yesteryear,
16430 we've added support in the source code for 80 column output
16431 devices. The code is now mostly constrained to 80 columns or
16432 less to support environments and editors that 1) cannot display
16433 or print more than 80 characters on a single line, and 2) cannot
16434 disable line wrapping.
16436 A major restructuring of the namespace data structure has been
16437 completed. The result is 1) cleaner and more
16438 understandable/maintainable code, and 2) a significant reduction
16439 in the dynamic memory requirement for each named ACPI object
16442 -------------------------------------------
16443 Summary of changes for this label: 06_23_00
16445 Linux support has been added. In order to obtain approval to get
16446 the ACPI CA subsystem into the Linux kernel, we've had to make
16447 quite a few changes to the base subsystem that will affect all
16448 users (all the changes are generic and OS- independent). The
16449 effects of these global changes have been somewhat far reaching.
16450 Files have been merged and/or renamed and interfaces have been
16451 renamed. The major changes are described below.
16453 Osd* interfaces renamed to AcpiOs* to eliminate namespace
16454 pollution/confusion within our target kernels. All OSD
16455 interfaces must be modified to match the new naming convention.
16457 Files merged across the subsystem. A number of the smaller source
16458 and header files have been merged to reduce the file count and
16459 increase the density of the existing files. There are too many
16460 to list here. In general, makefiles that call out individual
16461 files will require rebuilding.
16463 Interpreter files renamed. All interpreter files now have the
16464 prefix am* instead of ie* and is*.
16466 Header files renamed: The acapi.h file is now acpixf.h. The
16467 acpiosd.h file is now acpiosxf.h. We are removing references to
16468 the acronym "API" since it is somewhat windowsy. The new name is
16469 "external interface" or xface or xf in the filenames.j
16472 All manifest constants have been forced to upper case (some were
16473 mixed case.) Also, the string "ACPI_" has been prepended to many
16474 (not all) of the constants, typedefs, and structs.
16476 The globals "DebugLevel" and "DebugLayer" have been renamed
16477 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
16479 All other globals within the subsystem are now prefixed with
16480 "AcpiGbl_" Internal procedures within the subsystem are now
16481 prefixed with "Acpi" (with only a few exceptions). The original
16482 two-letter abbreviation for the subcomponent remains after "Acpi"
16483 - for example, CmCallocate became AcpiCmCallocate.
16485 Added a source code translation/conversion utility. Used to
16486 generate the Linux source code, it can be modified to generate
16487 other types of source as well. Can also be used to cleanup
16488 existing source by removing extraneous spaces and blank lines.
16489 Found in tools/acpisrc/*
16491 OsdUnMapMemory was renamed to OsdUnmapMemory and then
16492 AcpiOsUnmapMemory. (UnMap became Unmap).
16494 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
16495 When set to one, this indicates that the caller wants to use the
16497 semaphore as a mutex, not a counting semaphore. ACPI CA uses
16498 both types. However, implementers of this call may want to use
16499 different OS primitives depending on the type of semaphore
16500 requested. For example, some operating systems provide separate
16502 "mutex" and "semaphore" interfaces - where the mutex interface is
16503 much faster because it doesn't have all the overhead of a full
16504 semaphore implementation.
16506 Fixed a deadlock problem where a method that accesses the PCI
16507 address space can block forever if it is the first access to the
16510 -------------------------------------------
16511 Summary of changes for this label: 06_02_00
16513 Support for environments that cannot handle unaligned data
16514 accesses (e.g. firmware and OS environments devoid of alignment
16515 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
16516 been added (via configurable macros) in these three areas: -
16517 Transfer of data from the raw AML byte stream is done via byte
16518 moves instead of word/dword/qword moves. - External objects are
16519 aligned within the user buffer, including package elements (sub-
16520 objects). - Conversion of name strings to UINT32 Acpi Names is now
16523 The Store operator was modified to mimic Microsoft's
16524 implementation when storing to a Buffer Field.
16526 Added a check of the BM_STS bit before entering C3.
16528 The methods subdirectory has been obsoleted and removed. A new
16529 file, cmeval.c subsumes the functionality.
16531 A 16-bit (DOS) version of AcpiExec has been developed. The
16532 makefile is under the acpiexec directory.