1 ----------------------------------------
2 14 December 2017. Summary of changes for version 20171214:
5 1) ACPICA kernel-resident subsystem:
7 Fixed a regression in the external (public) AcpiEvaluateObjectTyped
8 interface where the optional "pathname" argument had inadvertently become
9 a required argument returning an error if omitted (NULL pointer
12 Fixed two possible memory leaks related to the recently developed "late
13 resolution" of reference objects within ASL Package Object definitions.
15 Added two recently defined _OSI strings: "Windows 2016" and "Windows
16 2017". Mario Limonciello.
18 Implemented and deployed a safer version of the C library function
19 strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the
20 creation of unterminated strings as a possible result of a standard
23 Cleaned up and restructured the global variable file (acglobal.h). There
24 are many changes, but no functional changes.
27 2) iASL Compiler/Disassembler and Tools:
29 iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the
30 optional OemData field at the end of the table was incorrectly required
31 for proper compilation. It is now correctly an optional field.
33 ASLTS: The entire suite was converted from standard ASL to the ASL+
34 language, using the ASL-to-ASL+ converter which is integrated into the
35 iASL compiler. A binary compare of all output files has verified the
36 correctness of the conversion.
38 iASL: Fixed the source code build for platforms where "char" is unsigned.
39 This affected the iASL lexer only. Jung-uk Kim.
41 ----------------------------------------
42 10 November 2017. Summary of changes for version 20171110:
45 1) ACPICA kernel-resident subsystem:
47 This release implements full support for ACPI 6.2A:
48 NFIT - Added a new subtable, "Platform Capabilities Structure"
49 No other changes to ACPICA were required, since ACPI 6.2A is primarily an
50 errata release of the specification.
52 Other ACPI table changes:
53 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo
54 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy
57 Utilities: Modified the string/integer conversion functions to use
58 internal 64-bit divide support instead of a native divide. On 32-bit
59 platforms, a 64-bit divide typically requires a library function which
60 may not be present in the build (kernel or otherwise).
62 Implemented a targeted error message for timeouts returned from the
63 Embedded Controller device driver. This is seen frequently enough to
64 special-case an AE_TIME returned from an EC operation region access:
65 "Timeout from EC hardware or EC device driver"
67 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all
68 runtime error messages have the identical prefix.
71 2) iASL Compiler/Disassembler and Tools:
73 AcpiXtract: Fixed a problem with table header detection within the
74 acpidump file. Processing a table could be ended early if a 0x40 (@)
75 appears in the original binary table, resulting in the @ symbol appearing
76 in the decoded ASCII field at the end of the acpidump text line. The
77 symbol caused acpixtract to incorrectly think it had reached the end of
78 the current table and the beginning of a new table.
80 AcpiXtract: Added an option (-f) to ignore some errors during table
81 extraction. This initial implementation ignores non-ASCII and non-
82 printable characters found in the acpidump text file.
84 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics
85 for ASLTS. This feature is used to track memory allocations from
86 different memory caches within the ACPICA code. At the end of an ASLTS
87 run, these memory statistics are recorded and stored in a log file.
89 Debugger (user-space version): Implemented a simple "Background" command.
90 Creates a new thread to execute a control method in the background, while
91 control returns to the debugger prompt to allow additional commands.
92 Syntax: Background <Namepath> [Arguments]
94 ----------------------------------------
95 29 September 2017. Summary of changes for version 20170929:
98 1) ACPICA kernel-resident subsystem:
100 Redesigned and implemented an improved ASL While() loop timeout
101 mechanism. This mechanism is used to prevent infinite loops in the kernel
102 AML interpreter caused by either non-responsive hardware or incorrect AML
103 code. The new implementation uses AcpiOsGetTimer instead of a simple
104 maximum loop count, and is thus more accurate and constant across
105 different machines. The default timeout is currently 30 seconds, but this
106 may be adjusted later.
108 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to
109 better reflect the new implementation of the loop timeout mechanism.
111 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support
112 and to fix an off-by-one error. Jung-uk Kim.
114 Fixed an EFI build problem by updating the makefiles to for a new file
115 that was added, utstrsuppt.c
118 2) iASL Compiler/Disassembler and Tools:
120 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This
121 includes support in the table disassembler, compiler, and template
124 iASL: Added an exception for an illegal type of recursive method
125 invocation. If a method creates named objects, the first recursive call
126 will fail at runtime. This change adds an error detection at compile time
127 to catch the problem up front. Note: Marking such a method as
128 "serialized" will not help with this problem, because the same thread can
129 acquire the method mutex more than once. Example compiler and runtime
139 Error 6152 - ^ Illegal recursive call to method
140 that creates named objects (MTH1)
142 Previous runtime exception:
143 ACPI Error: [INT1] Namespace lookup failure,
144 AE_ALREADY_EXISTS (20170831/dswload2-465)
146 iASL: Updated support for External() opcodes to improve namespace
147 management and error detection. These changes are related to issues seen
148 with multiple-segment namespace pathnames within External declarations,
151 External(\_SB.PCI0.GFX0, DeviceObj)
152 External(\_SB.PCI0.GFX0.ALSI)
154 iASL: Implemented support for multi-line error/warning messages. This
155 enables more detailed and helpful error messages as below, from the
156 initial deployment for the duplicate names error:
158 DSDT.iiii 1692: Device(PEG2) {
159 Error 6074 - ^ Name already exists in scope
162 Original name creation/declaration below:
163 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj)
165 AcpiXtract: Added additional flexibility to support differing input hex
166 dump formats. Specifically, hex dumps that contain partial disassembly
167 and/or comments within the ACPI table data definition. There exist some
168 dump utilities seen in the field that create this type of hex dump (such
169 as Simics). For example:
171 DSDT @ 0xdfffd0c0 (10999 bytes)
179 Creator_id 1280593481
180 Creator_revision 537399345
181 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00
183 2af0: 5f 4c 30 46 00 a4 01
185 Test suite: Miscellaneous changes/fixes:
186 More cleanup and simplification of makefiles
187 Continue compilation of test cases after a compile failure
188 Do not perform binary compare unless both files actually exist
190 iASL: Performed some code/module restructuring. Moved all memory
191 allocation functions to new modules. Two new files, aslallocate.c and
194 ----------------------------------------
195 31 August 2017. Summary of changes for version 20170831:
198 1) ACPICA kernel-resident subsystem:
200 Implemented internal support for full 64-bit addresses that appear in all
201 Generic Address Structure (GAS) structures. Previously, only the lower 32
202 bits were used. Affects the use of GAS structures in the FADT and other
203 tables, as well as the GAS structures passed to the AcpiRead and
204 AcpiWrite public external interfaces that are used by drivers. Lv Zheng.
206 Added header support for the PDTT ACPI table (Processor Debug Trigger
207 Table). Full support in the iASL Data Table Compiler and disassembler is
211 2) iASL Compiler/Disassembler and Tools:
213 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor
214 Properties Topology Table) where a flag bit was specified in the wrong
215 bit position ("Line Size Valid", bit 6).
217 iASL: Implemented support for Octal integer constants as defined by the
218 ASL language grammar, per the ACPI specification. Any integer constant
219 that starts with a zero is an octal constant. For example,
220 Store (037777, Local0) /* Octal constant */
221 Store (0x3FFF, Local0) /* Hex equivalent */
222 Store (16383, Local0) /* Decimal equivalent */
224 iASL: Improved overflow detection for 64-bit string conversions during
225 compilation of integer constants. "Overflow" in this case means a string
226 that represents an integer that is too large to fit into a 64-bit value.
227 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to
228 the low-order 32 bits with a warning, as previously implemented. Several
229 new exceptions are defined that indicate a 64-bit overflow, as well as
230 the base (radix) that was used during the attempted conversion. Examples:
231 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW
232 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW
233 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW
235 iASL: Added a warning for the case where a ResourceTemplate is declared
236 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In
237 this case, the resulting template is created with a single END_TAG
238 descriptor, which is essentially useless.
240 iASL: Expanded the -vw option (ignore specific warnings/remarks) to
241 include compilation error codes as well.
243 ----------------------------------------
244 28 July 2017. Summary of changes for version 20170728:
247 1) ACPICA kernel-resident subsystem:
249 Fixed a regression seen with small resource descriptors that could cause
250 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
252 AML interpreter: Implemented a new feature that allows forward references
253 from individual named references within package objects that are
254 contained within blocks of "module-level code". This provides
255 compatibility with other ACPI implementations and supports existing
256 firmware that depends on this feature. Example:
259 If (ABCD) /* An If() at module-level */
261 Name (PKG1, Package()
263 INT1 /* Forward reference to object INT1
269 AML Interpreter: Fixed a problem with the Alias() operator where aliases
270 to some ASL objects were not handled properly. Objects affected are:
271 Mutex, Event, and OperationRegion.
273 AML Debugger: Enhanced to properly handle AML Alias objects. These
274 objects have one level of indirection which was not fully supported by
277 Table Manager: Added support to detect and ignore duplicate SSDTs within
278 the XSDT/RSDT. This error in the XSDT has been seen in the field.
280 EFI and EDK2 support:
281 Enabled /WX flag for MSVC builds
282 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
283 Added local support for 64-bit multiply and shift operations
284 Added support to compile acpidump.efi on Windows
285 Added OSL function stubs for interfaces not used under EFI
287 Added additional support for the _DMA predefined name. _DMA returns a
288 buffer containing a resource template. This change add support within the
289 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
290 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
293 2) iASL Compiler/Disassembler and Tools:
295 iASL: Fixed a problem where the internal input line buffer(s) could
296 overflow if there are very long lines in the input ASL source code file.
297 Implemented buffer management that automatically increases the size of
298 the buffers as necessary.
300 iASL: Added an option (-vx) to "expect" particular remarks, warnings and
301 errors. If the specified exception is not raised during compilation, the
302 compiler emits an error. This is intended to support the ASL test suite,
303 but may be useful in other contexts.
305 iASL: Implemented a new predefined macro, __METHOD__, which returns a
306 string containing the name of the current control method that is being
309 iASL: Implemented debugger and table compiler support for the SDEI ACPI
310 table (Software Delegated Exception Interface). James Morse
311 <james.morse@arm.com>
313 Unix/Linux makefiles: Added an option to disable compile optimizations.
314 The disable occurs when the NOOPT flag is set to TRUE.
315 theracermaster@gmail.com
317 Acpidump: Added support for multiple DSDT and FACS tables. This can occur
318 when there are different tables for 32-bit versus 64-bit.
320 Enhanced error reporting for the ASL test suite (ASLTS) by removing
321 unnecessary/verbose text, and emit the actual line number where an error
322 has occurred. These changes are intended to improve the usefulness of the
325 ----------------------------------------
326 29 June 2017. Summary of changes for version 20170629:
329 1) ACPICA kernel-resident subsystem:
331 Tables: Implemented a deferred ACPI table verification. This is useful
332 for operating systems where the tables cannot be verified in the early
333 initialization stage due to early memory mapping limitations on some
334 architectures. Lv Zheng.
336 Tables: Removed the signature validation for dynamically loaded tables.
337 Provides compatibility with other ACPI implementations. Previously, only
338 SSDT tables were allowed, as per the ACPI specification. Now, any table
339 signature can be used via the Load() operator. Lv Zheng.
341 Tables: Fixed several mutex issues that could cause errors during table
342 acquisition. Lv Zheng.
344 Tables: Fixed a problem where an ACPI warning could be generated if a
345 null pointer was passed to the AcpiPutTable interface. Lv Zheng.
347 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
348 AcpiPutTable interfaces. This applies to the "late stage" table loading
349 when the use of AcpiPutTable is no longer required (since the system
350 memory manager is fully running and available). Lv Zheng.
352 Fixed/Reverted a regression during processing of resource descriptors
353 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
354 exception in this case.
356 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
357 I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
359 Interpreter: Fixed a possible fault if an Alias operator with an invalid
360 or duplicate target is encountered during Alias creation in
361 AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
363 Added an option to use designated initializers for function pointers.
364 Kees Cook <keescook@google.com>
367 2) iASL Compiler/Disassembler and Tools:
369 iASL: Allow compilation of External declarations with target pathnames
370 that refer to existing named objects within the table. Erik Schmauss.
372 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
373 FieldUnit name also is declared via External in the same table. Erik
376 iASL: Allow existing scope names within pathnames used in External
377 statements. For example:
378 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
381 iASL: IORT ACPI table: Implemented changes required to decode the new
382 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
383 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
385 Disassembler: Don't abort disassembly on errors from External()
386 statements. Erik Schmauss.
388 Disassembler: fixed a possible fault when one of the Create*Field
389 operators references a Resource Template. ACPICA Bugzilla 1396.
391 iASL: In the source code, resolved some naming inconsistences across the
392 parsing support. Fixes confusion between "Parse Op" and "Parse Node".
393 Adds a new file, aslparseop.c
395 ----------------------------------------
396 31 May 2017. Summary of changes for version 20170531:
401 The ACPI specification version 6.2 has been released and is available at
402 http://uefi.org/specifications
404 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
405 are summarized below.
407 New ACPI tables (Table Compiler/Disassembler/Templates):
408 HMAT (Heterogeneous Memory Attributes Table)
409 WSMT (Windows SMM Security Mitigation Table)
410 PPTT (Processor Properties Topology Table)
412 New subtables for existing ACPI tables:
413 HEST (New subtable, Arch-deferred machine check)
414 SRAT (New subtable, Arch-specific affinity structure)
415 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
417 Simple updates for existing ACPI tables:
418 BGRT (two new flag bits)
419 HEST (New bit defined for several subtables, GHES_ASSIST)
421 New Resource Descriptors and Resource macros (Compiler/Disassembler):
427 New type for hardware error notification (section 18.3.2.9)
429 New predefined names/methods (Compiler/Interpreter):
430 _HMA (Heterogeneous Memory Attributes)
431 _LSI (Label Storage Information)
432 _LSR (Label Storage Read)
433 _LSW (Label Storage Write)
435 ASL grammar/macro changes (Compiler):
436 For() ASL macro, implemented with the AML while operator
437 Extensions to Concatenate operator
438 Support for multiple definition blocks in same ASL file
439 Clarification for Buffer operator
440 Allow executable AML code underneath all scopes (Devices, etc.)
441 Clarification/change for the _OSI return value
442 ASL grammar update for reference operators
443 Allow a zero-length string for AML filename in DefinitionBlock
446 New device object notification value
447 Remove a notify value (0x0C) for graceful shutdown
448 New UUIDs for processor/cache properties and
449 physical package property
450 New _HID, ACPI0014 (Wireless Power Calibration Device)
453 1) ACPICA kernel-resident subsystem:
455 Added support to disable ACPI events on hardware-reduced platforms.
456 Eliminates error messages of the form "Could not enable fixed event". Lv
459 Fixed a problem using Device/Thermal objects with the ObjectType and
460 DerefOf ASL operators. This support had not been fully/properly
463 Fixed a problem where if a Buffer object containing a resource template
464 was longer than the actual resource template, an error was generated --
465 even though the AML is legal. This case has been seen in the field.
467 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
468 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
470 Added header file changes for the TPM2 ACPI table. Update to new version
471 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
473 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
474 These interfaces are intended to be used only in conjunction with the
475 predefined _DLM method (Device Lock Method). "This object appears in a
476 device scope when AML access to the device must be synchronized with the
479 Example Code and Data Size: These are the sizes for the OS-independent
480 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
481 debug version of the code includes the debug output trace mechanism and
482 has a much larger code and data size.
485 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
486 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
488 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
489 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
492 2) iASL Compiler/Disassembler and Tools:
494 iASL: Fixed a problem where an External() declaration could not refer to
495 a Field Unit. Erik Schmauss.
497 Disassembler: Improved support for the Switch/Case operators. This
498 feature will disassemble AML code back to the original Switch operators
499 when possible, instead of an If..Else sequence. David Box
501 iASL and disassembler: Improved the handling of multiple extraneous
502 parentheses for both ASL input and disassembled ASL output.
504 Improved the behavior of the iASL compiler and disassembler to detect
505 improper use of external declarations
507 Disassembler: Now aborts immediately upon detection of an unknown AML
508 opcode. The AML parser has no real way to recover from this, and can
509 result in the creation of an ill-formed parse tree that causes errors
510 later during the disassembly.
512 All tools: Fixed a problem where the Unix application OSL did not handle
513 control-c correctly. For example, a control-c could incorrectly wake the
516 AcpiExec: Improved the Control-C handling and added a handler for
517 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
520 Reduced the verbosity of the generic unix makefiles. Previously, each
521 compilation displayed the full set of compiler options. This has been
522 eliminated as the options are easily inspected within the makefiles. Each
523 compilation now results in a single line of output.
525 ----------------------------------------
526 03 March 2017. Summary of changes for version 20170303:
531 The licensing information at the start of each source code module has
532 been updated. In addition to the Intel license, the dual GPLv2/BSD
533 license has been added for completeness. Now, a single version of the
534 source code should be suitable for all ACPICA customers. This is the
535 major change for this release since it affects all source code modules.
538 1) ACPICA kernel-resident subsystem:
540 Fixed two issues with the common asltypes.h header that could cause
541 problems in some environments: (Kim Jung-uk)
542 Removed typedef for YY_BUFFER_STATE ?
543 Fixes an error with earlier versions of Flex.
544 Removed use of FILE typedef (which is only defined in stdio.h)
547 2) iASL Compiler/Disassembler and Tools:
549 Disassembler: fixed a regression introduced in 20170224. A fix for a
550 memory leak related to resource descriptor tags (names) could fault when
551 the disassembler was generated with 64-bit compilers.
553 The ASLTS test suite has been updated to implement a new testing
554 architecture. During generation of the suite from ASL source, both the
555 ASL and ASL+ compilers are now validated, as well as the disassembler
556 itself (Erik Schmauss). The architecture executes as follows:
558 For every ASL source module:
559 Compile (legacy ASL compilation)
560 Disassemble the resulting AML to ASL+ source code
561 Compile the new ASL+ module
562 Perform a binary compare on the legacy AML and the new ASL+ AML
563 The ASLTS suite then executes normally using the AML binaries.
565 ----------------------------------------
566 24 February 2017. Summary of changes for version 20170224:
569 1) ACPICA kernel-resident subsystem:
571 Interpreter: Fixed two issues with the control method return value auto-
572 repair feature, where an attempt to double-delete an internal object
573 could result in an ACPICA warning (for _CID repair and others). No fault
574 occurs, however, because the attempted deletion (actually a release to an
575 internal cache) is detected and ignored via object poisoning.
577 Debugger: Fixed an AML interpreter mutex issue during the single stepping
578 of control methods. If certain debugger commands are executed during
579 stepping, a mutex aquire/release error could occur. Lv Zheng.
581 Fixed some issues generating ACPICA with the Intel C compiler by
582 restoring the original behavior and compiler-specific include file in
585 Example Code and Data Size: These are the sizes for the OS-independent
586 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
587 debug version of the code includes the debug output trace mechanism and
588 has a much larger code and data size.
591 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
592 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
594 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
595 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
598 2) iASL Compiler/Disassembler and Tools:
600 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
601 tool has been designed, implemented, and included in this release. The
602 key feature of this utility is that the original comments within the
603 input ASL file are preserved during the conversion process, and included
604 within the converted ASL+ file -- thus creating a transparent conversion
605 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
607 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
610 iASL/Disassembler: Improved the detection and correct disassembly of
611 Switch/Case operators. This feature detects sequences of if/elseif/else
612 operators that originated from ASL Switch/Case/Default operators and
613 emits the original operators. David Box.
615 iASL: Improved the IORT ACPI table support in the following areas. Lv
617 Clear MappingOffset if the MappingCount is zero.
618 Fix the disassembly of the SMMU GSU interrupt offset.
619 Update the template file for the IORT table.
621 Disassembler: Enhanced the detection and disassembly of resource
622 template/descriptor within a Buffer object. An EndTag descriptor is now
623 required to have a zero second byte, since all known ASL compilers emit
624 this. This helps eliminate incorrect decisions when a buffer is
625 disassembled (false positives on resource templates).
627 ----------------------------------------
628 19 January 2017. Summary of changes for version 20170119:
631 1) General ACPICA software:
633 Entire source code base: Added the 2017 copyright to all source code
634 legal/licensing module headers and utility/tool signons. This includes
635 the standard Linux dual-license header. This affects virtually every file
636 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
637 the ACPICA test suite.
640 2) iASL Compiler/Disassembler and Tools:
642 iASL: Removed/fixed an inadvertent remark when a method argument
643 containing a reference is used as a target operand within the method (and
644 never used as a simple argument), as in the example below. Jeffrey Hugo.
646 dsdt.asl 1507: Store(0x1, Arg0)
647 Remark 2146 - ^ Method Argument is never used (Arg0)
649 All tools: Removed the bit width of the compiler that generated the tool
650 from the common signon for all user space tools. This proved to be
651 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
652 from the generic makefiles (Thomas Petazzoni). Example below.
655 ASL+ Optimizing Compiler version 20170119-32
656 ASL+ Optimizing Compiler version 20170119-64
659 ASL+ Optimizing Compiler version 20170119
661 ----------------------------------------
662 22 December 2016. Summary of changes for version 20161222:
665 1) ACPICA kernel-resident subsystem:
667 AML Debugger: Implemented a new mechanism to simplify and enhance
668 debugger integration into all environments, including kernel debuggers
669 and user-space utilities, as well as remote debug services. This
670 mechanism essentially consists of new OSL interfaces to support debugger
671 initialization/termination, as well as wait/notify interfaces to perform
672 the debugger handshake with the host. Lv Zheng.
675 AcpiOsInitializeDebugger (void)
676 AcpiOsTerminateDebugger (void)
677 AcpiOsWaitCommandReady (void)
678 AcpiOsNotifyCommandComplete (void)
680 New OS services layer:
681 osgendbg.c -- Example implementation, and used for AcpiExec
683 Update for Generic Address Space (GAS) support: Although the AccessWidth
684 and/or BitOffset fields of the GAS are not often used, this change now
685 fully supports these fields. This affects the internal support for FADT
686 registers, registers in other ACPI data tables, and the AcpiRead and
687 AcpiWrite public interfaces. Lv Zheng.
689 Sleep support: In order to simplify integration of ACPI sleep for the
690 various host operating systems, a new OSL interface has been introduced.
691 AcpiOsEnterSleep allows the host to perform any required operations
692 before the final write to the sleep control register(s) is performed by
696 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
698 Called from these internal interfaces:
702 EFI support: Added a very small EFI/ACPICA example application. Provides
703 a simple demo for EFI integration, as well as assisting with resolution
704 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
706 source/tools/efihello/efihello.c
708 Local C library: Implemented several new functions to enhance ACPICA
709 portability, for environments where these clib functions are not
710 available (such as EFI). Lv Zheng:
717 Fixed a regression where occasionally a valid resource descriptor was
718 incorrectly detected as invalid at runtime, and a
719 AE_AML_NO_RESOURCE_END_TAG was returned.
721 Fixed a problem with the recently implemented support that enables
722 control method invocations as Target operands to many ASL operators.
723 Warnings of this form: "Needed type [Reference], found [Processor]" were
724 seen at runtime for some method invocations.
726 Example Code and Data Size: These are the sizes for the OS-independent
727 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
728 debug version of the code includes the debug output trace mechanism and
729 has a much larger code and data size.
732 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
733 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
735 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
736 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
739 2) iASL Compiler/Disassembler and Tools:
741 Disassembler: Enhanced output by adding the capability to detect and
742 disassemble ASL Switch/Case statements back to the original ASL source
743 code instead of if/else blocks. David Box.
745 AcpiHelp: Split a large file into separate files based upon
746 functionality/purpose. New files are:
750 ----------------------------------------
751 17 November 2016. Summary of changes for version 20161117:
754 1) ACPICA kernel-resident subsystem:
756 Table Manager: Fixed a regression introduced in 20160729, "FADT support
757 cleanup". This was an attempt to remove all references in the source to
758 the FADT version 2, which never was a legal version number. It was
759 skipped because it was an early version of 64-bit support that was
760 eventually abandoned for the current 64-bit support.
762 Interpreter: Fixed a problem where runtime implicit conversion was
763 incorrectly disabled for the ASL operators below. This brings the
764 behavior into compliance with the ACPI specification:
772 Table Manager: Added a new public interface, AcpiPutTable, used to
773 release and free an ACPI table returned by AcpiGetTable and related
774 interfaces. Lv Zheng.
776 Example Code and Data Size: These are the sizes for the OS-independent
777 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
778 debug version of the code includes the debug output trace mechanism and
779 has a much larger code and data size.
782 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
783 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
785 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
786 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
789 2) iASL Compiler/Disassembler and Tools:
791 Disassembler: Fixed a regression for disassembly of Resource Template.
792 Detection of templates in the AML stream missed some types of templates.
794 iASL: Fixed a problem where an Access Size error was returned for the PCC
795 address space when the AccessSize of the GAS register is greater than a
798 iASL: Implemented several grammar changes for the operators below. These
799 changes are slated for the next version of the ACPI specification:
800 RefOf - Disallow method invocation as an operand
801 CondRefOf - Disallow method invocation as an operand
802 DerefOf - Disallow operands that use the result from operators
804 do not return a reference (Changed TermArg to
807 iASL: Control method invocations are now allowed for Target operands, as
808 per the ACPI specification. Removed error for using a control method
809 invocation as a Target operand.
811 Disassembler: Improved detection of Resource Templates, Unicode, and
812 Strings within Buffer objects. These subtypes do not contain a specific
813 opcode to indicate the originating ASL code, and they must be detected by
814 other means within the disassembler.
816 iASL: Implemented an optimization improvement for 32-bit ACPI tables
817 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
818 only after 64-bit to 32-bit truncation. A truncation warning message is
819 still emitted, however.
821 AcpiXtract: Implemented handling for both types of line terminators (LF
822 or CR/LF) so that it can accept AcpiDump output files from any system.
825 AcpiBin: Added two new options for comparing AML files:
826 -a: compare and display ALL mismatches
827 -o: start compare at this offset into the second file
829 ----------------------------------------
830 30 September 2016. Summary of changes for version 20160930:
833 1) ACPICA kernel-resident subsystem:
835 Fixed a regression in the internal AcpiTbFindTable function where a non
836 AE_OK exception could inadvertently be returned even if the function did
837 not fail. This problem affects the following operators:
841 Fixed a regression in the LoadTable operator where a load to any
842 namespace location other than the root no longer worked properly.
844 Increased the maximum loop count value that will result in the
845 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
846 prevent infinite loops within the AML interpreter and thus the host OS
847 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
850 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
851 acpixf.h file. This allows hosts to easily configure the maximum loop
854 Removed an illegal character in the strtoul64.c file. This character
855 caused errors with some C compilers.
857 Example Code and Data Size: These are the sizes for the OS-independent
858 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
859 debug version of the code includes the debug output trace mechanism and
860 has a much larger code and data size.
863 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
864 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
866 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
867 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
870 2) iASL Compiler/Disassembler and Tools:
872 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
873 the simpler ASL ElseIf keyword. During the conversion, a trailing If
874 block could be lost and missing from the disassembled output.
876 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
877 the missing rule caused a parse error when using the Index operator as an
878 operand to ObjectType. This construct now compiles properly. Example:
881 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
882 option). Previously, unresolved symbols could cause a protection fault.
883 Such symbols are now marked as unresolved in the map file.
885 iASL: Implemented support to allow control method invocations as an
886 operand to the ASL DeRefOf operator. Example:
887 DeRefOf(MTH1(Local0))
889 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
890 possible _PLD buffer now includes examination of both the normal buffer
891 length (16 or 20) as well as the surrounding AML package length.
893 Disassembler: Fixed a problem with the decoding of complex expressions
894 within the Divide operator for ASL+. For the case where both the quotient
895 and remainder targets are specified, the entire statement cannot be
896 disassembled. Previously, the output incorrectly contained a mix of ASL-
897 and ASL+ operators. This mixed statement causes a syntax error when
899 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
901 Divide (INT1 + 6, 128, RSLT, QUOT)
903 iASL/Tools: Added support to process AML and non-AML ACPI tables
904 consistently. For the disassembler and AcpiExec, allow all types of ACPI
905 tables (AML and data tables). For the iASL -e option, allow only AML
908 ----------------------------------------
909 31 August 2016. Summary of changes for version 20160831:
912 1) ACPICA kernel-resident subsystem:
914 Improve support for the so-called "module-level code", which is defined
915 to be math, logical and control AML opcodes that appear outside of any
916 control method. This change improves the support by adding more opcodes
917 that can be executed in the manner. Some other issues have been solved,
918 and the ASL grammar changes to support such code under all scope
919 operators (Device, etc.) are complete. Lv Zheng.
921 UEFI support: these OSL functions have been implemented. This is an
922 additional step toward supporting the AcpiExec utility natively (with
923 full hardware access) under UEFI. Marcelo Ferreira.
924 AcpiOsReadPciConfiguration
925 AcpiOsWritePciConfiguration
927 Fixed a possible mutex error during control method auto-serialization. Lv
930 Updated support for the Generic Address Structure by fully implementing
931 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
934 Updated the return value for the internal _OSI method. Instead of
935 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
936 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
937 implementations, and will be reflected and clarified in the next version
938 of the ACPI specification.
940 Implemented two new table events that can be passed to an ACPICA table
941 handler. These events are used to indicate a table installation or
942 uninstallation. These events are used in addition to existed table load
943 and unload events. Lv Zheng.
945 Implemented a cleanup for all internal string-to-integer conversions.
946 Consolidate multiple versions of this functionality and limit possible
947 bases to either 10 or 16 to simplify the code. Adds a new file,
950 Cleanup the inclusion order of the various compiler-specific headers.
951 This simplifies build configuration management. The compiler-specific
952 headers are now split out from the host-specific headers. Lv Zheng.
954 Example Code and Data Size: These are the sizes for the OS-independent
955 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
956 debug version of the code includes the debug output trace mechanism and
957 has a much larger code and data size.
960 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
961 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
964 2) iASL Compiler/Disassembler and Tools:
966 iASL/AcpiExec: Added a command line option to display the build date/time
967 of the tool (-vd). This can be useful to verify that the correct version
968 of the tools are being used.
970 AML Debugger: Implemented a new subcommand ("execute predef") to execute
971 all predefined control methods and names within the current namespace.
972 This can be useful for debugging problems with ACPI tables and the ACPI
975 ----------------------------------------
976 29 July 2016. Summary of changes for version 20160729:
979 1) ACPICA kernel-resident subsystem:
981 Implemented basic UEFI support for the various ACPICA tools. This
983 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
984 2) Support to obtain the ACPI tables on UEFI.
985 3) Local implementation of required C library functions not available on
987 4) A front-end (main) function for the tools for UEFI-related
990 The initial deployment of this support is the AcpiDump utility executing
991 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
992 Current environments supported are Linux/Unix. MSVC generation is not
993 supported at this time. See the generate/efi/README file for build
994 instructions. Lv Zheng.
996 Future plans include porting the AcpiExec utility to execute natively on
997 the platform with I/O and memory access. This will allow viewing/dump of
998 the platform namespace and native execution of ACPI control methods that
999 access the actual hardware. To fully implement this support, the OSL
1000 functions below must be implemented with UEFI interfaces. Any community
1001 help in the implementation of these functions would be appreciated:
1006 AcpiOsReadPciConfiguration
1007 AcpiOsWritePciConfiguration
1009 Restructured and standardized the C library configuration for ACPICA,
1010 resulting in the various configuration options below. This includes a
1011 global restructuring of the compiler-dependent and platform-dependent
1012 include files. These changes may affect the existing platform-dependent
1013 configuration files on some hosts. Lv Zheng.
1015 The current C library configuration options appear below. For any issues,
1016 it may be helpful to examine the existing compiler-dependent and
1017 platform-dependent files as examples. Lv Zheng.
1020 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1022 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1023 2) Unix/Windows/BSD applications:
1024 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
1026 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
1027 3) UEFI applications:
1028 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
1030 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
1031 4) UEFI applications (EDK2/StdLib):
1032 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
1033 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
1036 AML interpreter: "module-level code" support. Allows for execution of so-
1037 called "executable" AML code (math/logical operations, etc.) outside of
1038 control methods not just at the module level (top level) but also within
1039 any scope declared outside of a control method - Scope{}, Device{},
1040 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
1042 Simplified the configuration of the "maximum AML loops" global option by
1043 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
1044 modified at runtime.
1047 Example Code and Data Size: These are the sizes for the OS-independent
1048 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1049 debug version of the code includes the debug output trace mechanism and
1050 has a much larger code and data size.
1053 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
1054 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
1057 2) iASL Compiler/Disassembler and Tools:
1059 iASL: Add full support for the RASF ACPI table (RAS Features Table).
1060 Includes disassembler, data table compiler, and header support.
1062 iASL Expand "module-level code" support. Allows for
1063 compilation/disassembly of so-called "executable" AML code (math/logical
1064 operations, etc.) outside of control methods not just at the module level
1065 (top level) but also within any scope declared outside of a control
1066 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
1069 AcpiDump: Added support for dumping all SSDTs on newer versions of
1070 Windows. These tables are now easily available -- SSDTs are not available
1071 through the registry on older versions.
1073 ----------------------------------------
1074 27 May 2016. Summary of changes for version 20160527:
1077 1) ACPICA kernel-resident subsystem:
1079 Temporarily reverted the new arbitrary bit length/alignment support in
1080 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
1081 a number of regressions with the new code that need to be fully resolved
1082 and tested before this support can be finally integrated into ACPICA.
1083 Apologies for any inconveniences these issues may have caused.
1085 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
1086 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
1087 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
1089 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
1090 option. Adds a new return macro, return_STR. Junk-uk Kim.
1092 Example Code and Data Size: These are the sizes for the OS-independent
1093 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1094 debug version of the code includes the debug output trace mechanism and
1095 has a much larger code and data size.
1098 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
1099 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1101 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1102 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
1104 ----------------------------------------
1105 22 April 2016. Summary of changes for version 20160422:
1107 1) ACPICA kernel-resident subsystem:
1109 Fixed a regression in the GAS (generic address structure) arbitrary bit
1110 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
1111 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
1113 ACPI 6.0: Added support for new/renamed resource macros. One new argument
1114 was added to each of these macros, and the original name has been
1115 deprecated. The AML disassembler will always disassemble to the new
1116 names. Support for the new macros was added to iASL, disassembler,
1117 resource manager, and the acpihelp utility. ACPICA BZ 1274.
1119 I2cSerialBus -> I2cSerialBusV2
1120 SpiSerialBus -> SpiSerialBusV2
1121 UartSerialBus -> UartSerialBusV2
1123 ACPI 6.0: Added support for a new integer field that was appended to the
1124 package object returned by the _BIX method. This adds iASL compile-time
1125 and AML runtime error checking. ACPICA BZ 1273.
1127 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
1128 Subspace Type2" (Headers, Disassembler, and data table compiler).
1130 Example Code and Data Size: These are the sizes for the OS-independent
1131 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1132 debug version of the code includes the debug output trace mechanism and
1133 has a much larger code and data size.
1136 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1137 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1139 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1140 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1143 2) iASL Compiler/Disassembler and Tools:
1145 iASL: Implemented an ASL grammar extension to allow/enable executable
1146 "module-level code" to be created and executed under the various
1147 operators that create new scopes. This type of AML code is already
1148 supported in all known AML interpreters, and the grammar change will
1149 appear in the next version of the ACPI specification. Simplifies the
1150 conditional runtime creation of named objects under these object types:
1158 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
1159 ease-of-use to the ASL language. The syntax is similar to the
1160 corresponding C operator, and is implemented with the existing AML While
1161 opcode -- thus requiring no changes to existing AML interpreters.
1163 For (Initialize, Predicate, Update) {TermList}
1168 Initializer // Nothing | TermArg => ComputationalData
1169 Predicate // Nothing | TermArg => ComputationalData
1170 Update // Nothing | TermArg => ComputationalData
1174 iASL: The _HID/_ADR detection and validation has been enhanced to search
1175 under conditionals in order to allow these objects to be conditionally
1178 iASL: Fixed several issues with the constant folding feature. The
1179 improvement allows better detection and resolution of statements that can
1180 be folded at compile time. ACPICA BZ 1266.
1182 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
1183 conversion to the ASL ElseIf operator where incorrect ASL code could be
1186 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
1187 sometimes an extra (and extraneous) set of parentheses were emitted for
1188 some combinations of operators. Although this did not cause any problems
1189 with recompilation of the disassembled code, it made the code more
1190 difficult to read. David Box. ACPICA BZ 1231.
1192 iASL: Changed to ignore the unreferenced detection for predefined names
1193 of resource descriptor elements, when the resource descriptor is
1194 created/defined within a control method.
1196 iASL: Disassembler: Fix a possible fault with externally declared Buffer
1199 ----------------------------------------
1200 18 March 2016. Summary of changes for version 20160318:
1202 1) ACPICA kernel-resident subsystem:
1204 Added support for arbitrary bit lengths and bit offsets for registers
1205 defined by the Generic Address Structure. Previously, only aligned bit
1206 lengths of 8/16/32/64 were supported. This was sufficient for many years,
1207 but recently some machines have been seen that require arbitrary bit-
1208 level support. ACPICA BZ 1240. Lv Zheng.
1210 Fixed an issue where the \_SB._INI method sometimes must be evaluated
1211 before any _REG methods are evaluated. Lv Zheng.
1213 Implemented several changes related to ACPI table support
1214 (Headers/Disassembler/TableCompiler):
1215 NFIT: For ACPI 6.1, updated to add some additional new fields and
1217 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
1219 DMAR: Added new constants per the 10/2014 DMAR spec.
1220 IORT: Added new subtable per the 10/2015 IORT spec.
1221 HEST: For ACPI 6.1, added new constants and new subtable.
1222 DBG2: Added new constants per the 12/2015 DBG2 spec.
1223 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
1225 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
1227 Updated header support for the DMAR table to match the current version of
1230 Added extensions to the ASL Concatenate operator to allow any ACPI object
1231 to be passed as an operand. Any object other than Integer/String/Buffer
1232 simply returns a string containing the object type. This extends the
1233 usefulness of the Printf macros. Previously, Concatenate would abort the
1234 control method if a non-data object was encountered.
1236 ACPICA source code: Deployed the C "const" keyword across the source code
1237 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
1239 Example Code and Data Size: These are the sizes for the OS-independent
1240 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1241 debug version of the code includes the debug output trace mechanism and
1242 has a much larger code and data size.
1245 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1246 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1248 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1249 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1252 2) iASL Compiler/Disassembler and Tools:
1254 iASL/Disassembler: Improved the heuristic used to determine the number of
1255 arguments for an externally defined control method (a method in another
1256 table). Although this is an improvement, there is no deterministic way to
1257 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
1258 will completely solve this problem as it is deployed (automatically) in
1261 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
1262 statements that could cause errors when the disassembled file is
1263 compiled. ACPICA BZ 1243. David Box.
1265 iASL: Fixed a regression caused by the merger of the two versions of the
1266 local strtoul64. Because of a dependency on a global variable, strtoul64
1267 could return an error for integers greater than a 32-bit value. ACPICA BZ
1270 iASL: Fixed a regression where a fault could occur for an ASL Return
1271 statement if it invokes a control method that is not resolved. ACPICA BZ
1274 AcpiXtract: Improved input file validation: detection of binary files and
1275 non-acpidump text files.
1277 ----------------------------------------
1278 12 February 2016. Summary of changes for version 20160212:
1280 1) ACPICA kernel-resident subsystem:
1282 Implemented full support for the ACPI 6.1 specification (released in
1283 January). This version of the specification is available at:
1284 http://www.uefi.org/specifications
1286 Only a relatively small number of changes were required in ACPICA to
1287 support ACPI 6.1, in these areas:
1288 - New predefined names
1290 - A new subtable for HEST
1291 - A few other header changes for new values
1293 Ensure \_SB_._INI is executed before any _REG methods are executed. There
1294 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
1296 Reverted a change made in version 20151218 which enabled method
1297 invocations to be targets of various ASL operators (SuperName and Target
1298 grammar elements). While the new behavior is supported by the ACPI
1299 specification, other AML interpreters do not support this behavior and
1300 never will. The ACPI specification will be updated for ACPI 6.2 to remove
1301 this support. Therefore, the change was reverted to the original ACPICA
1304 ACPICA now supports the GCC 6 compiler.
1306 Current Release: (Note: build changes increased sizes)
1307 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1308 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1310 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1311 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
1314 2) iASL Compiler/Disassembler and Tools:
1316 Completed full support for the ACPI 6.0 External() AML opcode. The
1317 compiler emits an external AML opcode for each ASL External statement.
1318 This opcode is used by the disassembler to assist with the disassembly of
1319 external control methods by specifying the required number of arguments
1320 for the method. AML interpreters do not use this opcode. To ensure that
1321 interpreters do not even see the opcode, a block of one or more external
1322 opcodes is surrounded by an "If(0)" construct. As this feature becomes
1323 commonly deployed in BIOS code, the ability of disassemblers to correctly
1324 disassemble AML code will be greatly improved. David Box.
1326 iASL: Implemented support for an optional cross-reference output file.
1327 The -lx option will create a the cross-reference file with the suffix
1328 "xrf". Three different types of cross-reference are created in this file:
1329 - List of object references made from within each control method
1330 - Invocation (caller) list for each user-defined control method
1331 - List of references to each non-method object in the namespace
1333 iASL: Method invocations as ASL Target operands are now disallowed and
1334 flagged as errors in preparation for ACPI 6.2 (see the description of the
1337 ----------------------------------------
1338 8 January 2016. Summary of changes for version 20160108:
1340 1) ACPICA kernel-resident subsystem:
1342 Updated all ACPICA copyrights and signons to 2016: Added the 2016
1343 copyright to all source code module headers and utility/tool signons.
1344 This includes the standard Linux dual-license header. This affects
1345 virtually every file in the ACPICA core subsystem, iASL compiler, all
1346 ACPICA utilities, and the ACPICA test suite.
1348 Fixed a regression introduced in version 20151218 concerning the
1349 execution of so-called module-level ASL/AML code. Namespace objects
1350 created under a module-level If() construct were not properly/fully
1351 entered into the namespace and could cause an interpreter fault when
1354 Example Code and Data Size: These are the sizes for the OS-independent
1355 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1356 debug version of the code includes the debug output trace mechanism and
1357 has a much larger code and data size.
1360 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1361 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
1363 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1364 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1367 2) iASL Compiler/Disassembler and Tools:
1369 Fixed a problem with the compilation of the GpioIo and GpioInt resource
1370 descriptors. The _PIN field name was incorrectly defined to be an array
1371 of 32-bit values, but the _PIN values are in fact 16 bits each. This
1372 would cause incorrect bit width warnings when using Word (16-bit) fields
1373 to access the descriptors.
1376 ----------------------------------------
1377 18 December 2015. Summary of changes for version 20151218:
1379 1) ACPICA kernel-resident subsystem:
1381 Implemented per-AML-table execution of "module-level code" as individual
1382 ACPI tables are loaded into the namespace during ACPICA initialization.
1383 In other words, any module-level code within an AML table is executed
1384 immediately after the table is loaded, instead of batched and executed
1385 after all of the tables have been loaded. This provides compatibility
1386 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
1389 To fully support the feature above, the default operation region handlers
1390 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
1391 installed before any ACPI tables are loaded. This enables module-level
1392 code to access these address spaces during the table load and module-
1393 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1396 Implemented several changes to the internal _REG support in conjunction
1397 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1398 utilities for the changes above. Although these tools were changed, host
1399 operating systems that simply use the default handlers for SystemMemory,
1400 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1402 For example, in the code below, DEV1 is conditionally added to the
1403 namespace by the DSDT via module-level code that accesses an operation
1404 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1405 created immediately after the DSDT is loaded in order for the SSDT to
1406 successfully reference DEV1. Previously, this code would cause an
1407 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1408 fully supported by ACPICA.
1410 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1412 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1413 Field (OPR1, AnyAcc, NoLock, Preserve)
1424 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1426 External (\DEV1, DeviceObj)
1432 Fixed an AML interpreter problem where control method invocations were
1433 not handled correctly when the invocation was itself a SuperName argument
1434 to another ASL operator. In these cases, the method was not invoked.
1435 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1440 Decrement, Increment
1443 Signal, Release, Reset
1446 Implemented automatic String-to-ObjectReference conversion support for
1447 packages returned by predefined names (such as _DEP). A common BIOS error
1448 is to add double quotes around an ObjectReference namepath, which turns
1449 the reference into an unexpected string object. This support detects the
1450 problem and corrects it before the package is returned to the caller that
1451 invoked the method. Lv Zheng.
1453 Implemented extensions to the Concatenate operator. Concatenate now
1454 accepts any type of object, it is not restricted to simply
1455 Integer/String/Buffer. For objects other than these 3 basic data types,
1456 the argument is treated as a string containing the name of the object
1457 type. This expands the utility of Concatenate and the Printf/Fprintf
1458 macros. ACPICA BZ 1222.
1460 Cleaned up the output of the ASL Debug object. The timer() value is now
1461 optional and no longer emitted by default. Also, the basic data types of
1462 Integer/String/Buffer are simply emitted as their values, without a data
1463 type string -- since the data type is obvious from the output. ACPICA BZ
1466 Example Code and Data Size: These are the sizes for the OS-independent
1467 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1468 debug version of the code includes the debug output trace mechanism and
1469 has a much larger code and data size.
1472 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1473 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1475 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1476 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1479 2) iASL Compiler/Disassembler and Tools:
1481 iASL: Fixed some issues with the ASL Include() operator. This operator
1482 was incorrectly defined in the iASL parser rules, causing a new scope to
1483 be opened for the code within the include file. This could lead to
1484 several issues, including allowing ASL code that is technically illegal
1485 and not supported by AML interpreters. Note, this does not affect the
1486 related #include preprocessor operator. ACPICA BZ 1212.
1488 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
1489 operator is essentially an ASL macro since there is no AML opcode
1490 associated with it. The code emitted by the iASL compiler for ElseIf is
1491 an Else opcode followed immediately by an If opcode. The disassembler
1492 will now emit an ElseIf if it finds an Else immediately followed by an
1493 If. This simplifies the decoded ASL, especially for deeply nested
1494 If..Else and large Switch constructs. Thus, the disassembled code more
1495 closely follows the original source ASL. ACPICA BZ 1211. Example:
1507 ElseIf (Arg0 == 0x02)
1512 AcpiExec: Added support for the new module level code behavior and the
1513 early region installation. This required a small change to the
1514 initialization, since AcpiExec must install its own operation region
1517 AcpiExec: Added support to make the debug object timer optional. Default
1518 is timer disabled. This cleans up the debug object output -- the timer
1519 data is rarely used.
1521 AcpiExec: Multiple ACPI tables are now loaded in the order that they
1522 appear on the command line. This can be important when there are
1523 interdependencies/references between the tables.
1525 iASL/Templates. Add support to generate template files with multiple
1526 SSDTs within a single output file. Also added ommand line support to
1527 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1531 ----------------------------------------
1532 24 November 2015. Summary of changes for version 20151124:
1534 1) ACPICA kernel-resident subsystem:
1536 Fixed a possible regression for a previous update to FADT handling. The
1537 FADT no longer has a fixed table ID, causing some issues with code that
1538 was hardwired to a specific ID. Lv Zheng.
1540 Fixed a problem where the method auto-serialization could interfere with
1541 the current SyncLevel. This change makes the auto-serialization support
1542 transparent to the SyncLevel support and management.
1544 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
1545 interface is intended for early access to the namespace during the
1546 initial namespace device discovery walk. The _SUB method has been seen to
1547 access operation regions in some cases, causing errors because the
1548 operation regions are not fully initialized.
1550 AML Debugger: Fixed some issues with the terminate/quit/exit commands
1551 that can cause faults. Lv Zheng.
1553 AML Debugger: Add thread ID support so that single-step mode only applies
1554 to the AML Debugger thread. This prevents runtime errors within some
1557 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
1558 methods that are invoked by this interface are optional, removed warnings
1559 emitted for the case where one or more of these methods do not exist.
1560 ACPICA BZ 1208, original change by Prarit Bhargava.
1562 Made a major pass through the entire ACPICA source code base to
1563 standardize formatting that has diverged a bit over time. There are no
1564 functional changes, but this will of course cause quite a few code
1565 differences from the previous ACPICA release.
1567 Example Code and Data Size: These are the sizes for the OS-independent
1568 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1569 debug version of the code includes the debug output trace mechanism and
1570 has a much larger code and data size.
1573 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1574 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1576 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1577 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1580 2) iASL Compiler/Disassembler and Tools:
1582 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
1583 definition blocks within a single ASL file and the resulting AML file.
1584 Support for this type of file was also added to the various tools that
1585 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
1586 example code below shows two definition blocks within the same file:
1588 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
1592 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
1596 iASL: Enhanced typechecking for the Name() operator. All expressions for
1597 the value of the named object must be reduced/folded to a single constant
1598 at compile time, as per the ACPI specification (the AML definition of
1601 iASL: Fixed some code indentation issues for the -ic and -ia options (C
1602 and assembly headers). Now all emitted code correctly begins in column 1.
1604 iASL: Added an error message for an attempt to open a Scope() on an
1605 object defined in an SSDT. The DSDT is always loaded into the namespace
1606 first, so any attempt to open a Scope on an SSDT object will fail at
1610 ----------------------------------------
1611 30 September 2015. Summary of changes for version 20150930:
1613 1) ACPICA kernel-resident subsystem:
1615 Debugger: Implemented several changes and bug fixes to assist support for
1616 the in-kernel version of the AML debugger. Lv Zheng.
1617 - Fix the "predefined" command for in-kernel debugger.
1618 - Do not enter debug command loop for the help and version commands.
1619 - Disallow "execute" command during execution/single-step of a method.
1621 Interpreter: Updated runtime typechecking for all operators that have
1622 target operands. The operand is resolved and validated that it is legal.
1623 For example, the target cannot be a non-data object such as a Device,
1624 Mutex, ThermalZone, etc., as per the ACPI specification.
1626 Debugger: Fixed the double-mutex user I/O handshake to work when local
1627 deadlock detection is enabled.
1629 Debugger: limited display of method locals and arguments (LocalX and
1630 ArgX) to only those that have actually been initialized. This prevents
1631 lines of extraneous output.
1633 Updated the definition of the NFIT table to correct the bit polarity of
1634 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1636 Example Code and Data Size: These are the sizes for the OS-independent
1637 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1638 debug version of the code includes the debug output trace mechanism and
1639 has a much larger code and data size.
1642 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1643 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1645 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1646 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1649 2) iASL Compiler/Disassembler and Tools:
1651 iASL: Improved the compile-time typechecking for operands of many of the
1654 -- Added an option to disable compiler operand/operator typechecking (-
1657 -- For the following operators, the TermArg operands are now validated
1658 when possible to be Integer data objects: BankField, OperationRegion,
1659 DataTableRegion, Buffer, and Package.
1661 -- Store (Source, Target): Both the source and target operands are
1662 resolved and checked that the operands are both legal. For example,
1663 neither operand can be a non-data object such as a Device, Mutex,
1664 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1665 operator can be used to store an object to any type of target object.
1667 -- Store (Source, Target): If the source is a Package object, the target
1668 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1669 is a Package, the source must also be a Package.
1671 -- Store (Source, Target): A warning is issued if the source and target
1672 resolve to the identical named object.
1674 -- Store (Source, <method invocation>): An error is generated for the
1675 target method invocation, as this construct is not supported by the AML
1678 -- For all ASL math and logic operators, the target operand must be a
1679 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1680 includes the function return value also.
1682 -- External declarations are also included in the typechecking where
1683 possible. External objects defined using the UnknownObj keyword cannot be
1684 typechecked, however.
1686 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1688 - Legacy code: Index(PKG1, 3)
1689 - New ASL+ code: PKG1[3]
1690 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1693 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1694 spaces were inadvertently appended to the filename, causing file access
1695 and deletion problems on some systems.
1697 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1698 possible compiler output files when building the test suite -- thus
1699 exercising these features of the compiler. These files are automatically
1700 deleted when the test suite exits.
1703 ----------------------------------------
1704 18 August 2015. Summary of changes for version 20150818:
1706 1) ACPICA kernel-resident subsystem:
1708 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1709 Zheng. ACPICA BZ 1186.
1711 Completed development to ensure that the ACPICA Disassembler and Debugger
1712 are fully standalone components of ACPICA. Removed cross-component
1713 dependences. Lv Zheng.
1715 The max-number-of-AML-loops is now runtime configurable (previously was
1716 compile-time only). This is essentially a loop timeout to force-abort
1717 infinite AML loops. ACPCIA BZ 1192.
1719 Debugger: Cleanup output to dump ACPI names and namepaths without any
1720 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1722 Removed unnecessary conditional compilations across the Debugger and
1723 Disassembler components where entire modules could be left uncompiled.
1725 The aapits test is deprecated and has been removed from the ACPICA git
1726 tree. The test has never been completed and has not been maintained, thus
1727 becoming rather useless. ACPICA BZ 1015, 794.
1729 A batch of small changes to close bugzilla and other reports:
1730 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1731 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1732 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1733 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1735 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1737 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1739 - Debugger: Split debugger initialization/termination interfaces. Lv
1741 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1743 - AcpiExec: Add debug message during _REG method phase during table
1745 - AcpiNames: Fix a regression where some output was missing and no longer
1747 - Debugger: General cleanup and simplification. Lv Zheng.
1748 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1750 Example Code and Data Size: These are the sizes for the OS-independent
1751 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1752 debug version of the code includes the debug output trace mechanism and
1753 has a much larger code and data size.
1756 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1757 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1759 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1760 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1763 2) iASL Compiler/Disassembler and Tools:
1765 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1766 were not handled properly and caused load errors. Now, properly invoke
1767 and use the ACPICA auto-reallocate mechanism for ACPI table data
1768 structures. ACPICA BZ 1188
1770 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1773 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1774 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1775 executed during initialization. ACPICA BZ 1187, 1189.
1777 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1778 that corresponds to each disassembled ASL statement, to simplify
1779 debugging. ACPICA BZ 1191.
1781 Debugger: Add option to the "objects" command to display a summary of the
1782 current namespace objects (Object type and count). This is displayed if
1783 the command is entered with no arguments.
1785 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1788 ----------------------------------------
1789 17 July 2015. Summary of changes for version 20150717:
1791 1) ACPICA kernel-resident subsystem:
1793 Improved the partitioning between the Debugger and Disassembler
1794 components. This allows the Debugger to be used standalone within kernel
1795 code without the Disassembler (which is used for single stepping also).
1796 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1798 Debugger: Implemented a new command to trace the execution of control
1799 methods (Trace). This is especially useful for the in-kernel version of
1800 the debugger when file I/O may not be available for method trace output.
1801 See the ACPICA reference for more information. Lv Zheng.
1803 Moved all C library prototypes (used for the local versions of these
1804 functions when requested) to a new header, acclib.h
1805 Cleaned up the use of non-ANSI C library functions. These functions are
1806 implemented locally in ACPICA. Moved all such functions to a common
1807 source file, utnonansi.c
1809 Debugger: Fixed a problem with the "!!" command (get last command
1810 executed) where the debugger could enter an infinite loop and eventually
1813 Removed the use of local macros that were used for some of the standard C
1814 library functions to automatically cast input parameters. This mostly
1815 affected the is* functions where the input parameter is defined to be an
1816 int. This required a few modifications to the main ACPICA source code to
1817 provide casting for these functions and eliminate possible compiler
1818 warnings for these parameters.
1820 Across the source code, added additional status/error checking to resolve
1821 issues discovered by static source code analysis tools such as Coverity.
1823 Example Code and Data Size: These are the sizes for the OS-independent
1824 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1825 debug version of the code includes the debug output trace mechanism and
1826 has a much larger code and data size.
1829 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1830 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1832 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1833 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1836 2) iASL Compiler/Disassembler and Tools:
1838 iASL: Fixed a regression where the device map file feature no longer
1839 worked properly when used in conjunction with the disassembler. It only
1840 worked properly with the compiler itself.
1842 iASL: Implemented a new warning for method LocalX variables that are set
1843 but never used (similar to a C compiler such as gcc). This also applies
1844 to ArgX variables that are not defined by the parent method, and are
1845 instead (legally) used as local variables.
1847 iASL/Preprocessor: Finished the pass-through of line numbers from the
1848 preprocessor to the compiler. This ensures that compiler errors/warnings
1849 have the correct original line numbers and filenames, regardless of any
1852 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1853 pass-through of comments to the preprocessor output file (which becomes
1854 the compiler input file). Also fixed a problem with // comments that
1855 appear after a math expression.
1857 iASL: Added support for the TCPA server table to the table compiler and
1858 template generator. (The client table was already previously supported)
1860 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1861 identify the iASL compiler.
1863 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1864 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1867 AcpiHelp: Update to expand help messages for the iASL preprocessor
1871 ----------------------------------------
1872 19 June 2015. Summary of changes for version 20150619:
1874 Two regressions in version 20150616 have been addressed:
1876 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1877 etc.) This update changes ACPICA to only use the standard headers for
1878 functions, or the prototypes for the local versions of the C library
1879 functions. Across the source code, this required some additional casts
1880 for some Clib invocations for portability. Moved all local prototypes to
1881 a new file, acclib.h
1883 Fixes several problems with recent changes to the handling of the FACS
1884 table that could cause some systems not to boot.
1887 ----------------------------------------
1888 16 June 2015. Summary of changes for version 20150616:
1891 1) ACPICA kernel-resident subsystem:
1893 Across the entire ACPICA source code base, the various macros for the C
1894 library functions (such as ACPI_STRLEN, etc.) have been removed and
1895 replaced by the standard C library names (strlen, etc.) The original
1896 purpose for these macros is no longer applicable. This simplification
1897 reduces the number of macros used in the ACPICA source code
1898 significantly, improving readability and maintainability.
1900 Implemented support for a new ACPI table, the OSDT. This table, the
1901 "override" SDT, can be loaded directly by the host OS at boot time. It
1902 enables the replacement of existing namespace objects that were installed
1903 via the DSDT and/or SSDTs. The primary purpose for this is to replace
1904 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
1905 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
1908 Added support for systems with (improperly) two FACS tables -- a "32-bit"
1909 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
1910 X field). This change will support both automatically. There continues to
1911 be systems found with this issue. This support requires a change to the
1912 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
1913 been added to allow the host to select which FACS is desired
1914 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
1917 Added a new feature to allow for systems that do not contain an FACS.
1918 Although this is already supported on hardware-reduced platforms, the
1919 feature has been extended for all platforms. The reasoning is that we do
1920 not want to abort the entire ACPICA initialization just because the
1921 system is seriously buggy and has no FACS.
1923 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
1924 not correctly transcribed from the ACPI specification in ACPICA version
1927 Implemented support for the _CLS object in the AcpiGetObjectInfo external
1930 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
1931 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
1932 compiler also updated. Note: The TCPA "server" table is not supported by
1933 the disassembler/table-compiler at this time.
1935 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
1937 Example Code and Data Size: These are the sizes for the OS-independent
1938 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1939 debug version of the code includes the debug output trace mechanism and
1940 has a much larger code and data size.
1943 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1944 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1946 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1947 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1950 2) iASL Compiler/Disassembler and Tools:
1952 Disassembler: Fixed a problem with the new symbolic operator disassembler
1953 where incorrect ASL code could be emitted in some cases for the "non-
1954 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
1955 ShiftRight. The actual problem cases seem to be rather unusual in common
1956 ASL code, however. David Box.
1958 Modified the linux version of acpidump to obtain ACPI tables from not
1959 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
1962 iASL: Fixed a problem where the user preprocessor output file (.i)
1963 contained extra data that was not expected. The compiler was using this
1964 file as a temporary file and passed through #line directives in order to
1965 keep compiler error messages in sync with the input file and line number
1966 across multiple include files. The (.i) is no longer a temporary file as
1967 the compiler uses a new, different file for the original purpose.
1969 iASL: Fixed a problem where comments within the original ASL source code
1970 file were not passed through to the preprocessor output file, nor any
1973 iASL: Fixed some issues for the handling of the "#include" preprocessor
1974 directive and the similar (but not the same) "Include" ASL operator.
1976 iASL: Add support for the new OSDT in both the disassembler and compiler.
1978 iASL: Fixed a problem with the constant folding support where a Buffer
1979 object could be incorrectly generated (incorrectly formed) during a
1980 conversion to a Store() operator.
1982 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
1983 description text for the _REV predefined name. _REV now permanently
1984 returns 2, as per the ACPI 6.0 specification.
1986 Debugger: Enhanced the output of the Debug ASL object for references
1987 produced by the Index operator. For Buffers and strings, only output the
1988 actual byte pointed to by the index. For packages, only print the single
1989 package element decoded by the index. Previously, the entire
1990 buffer/string/package was emitted.
1992 iASL/Table-compiler: Fixed a regression where the "generic" data types
1993 were no longer recognized, causing errors.
1996 ----------------------------------------
1997 15 May 2015. Summary of changes for version 20150515:
1999 This release implements most of ACPI 6.0 as described below.
2001 1) ACPICA kernel-resident subsystem:
2003 Implemented runtime argument checking and return value checking for all
2004 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
2005 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
2007 Example Code and Data Size: These are the sizes for the OS-independent
2008 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2009 debug version of the code includes the debug output trace mechanism and
2010 has a much larger code and data size.
2013 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
2014 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
2016 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2017 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2020 2) iASL Compiler/Disassembler and Tools:
2022 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
2023 names (argument count validation and return value typechecking.)
2025 iASL disassembler and table compiler: implemented support for all new
2026 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
2028 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
2031 iASL preprocessor: Added a new directive to enable inclusion of binary
2032 blobs into ASL code. The new directive is #includebuffer. It takes a
2033 binary file as input and emits a named ascii buffer object into the ASL
2036 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
2038 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
2041 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
2045 ----------------------------------------
2046 10 April 2015. Summary of changes for version 20150410:
2048 Reverted a change introduced in version 20150408 that caused
2049 a regression in the disassembler where incorrect operator
2050 symbols could be emitted.
2053 ----------------------------------------
2054 08 April 2015. Summary of changes for version 20150408:
2057 1) ACPICA kernel-resident subsystem:
2059 Permanently set the return value for the _REV predefined name. It now
2060 returns 2 (was 5). This matches other ACPI implementations. _REV will be
2061 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
2062 for ACPI 2.0 and later. It should never be used to differentiate or
2063 identify operating systems.
2065 Added the "Windows 2015" string to the _OSI support. ACPICA will now
2066 return TRUE to a query with this string.
2068 Fixed several issues with the local version of the printf function.
2070 Added the C99 compiler option (-std=c99) to the Unix makefiles.
2073 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
2074 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
2076 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2077 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2080 2) iASL Compiler/Disassembler and Tools:
2082 iASL: Implemented an enhancement to the constant folding feature to
2083 transform the parse tree to a simple Store operation whenever possible:
2084 Add (2, 3, X) ==> is converted to: Store (5, X)
2085 X = 2 + 3 ==> is converted to: Store (5, X)
2087 Updated support for the SLIC table (Software Licensing Description Table)
2088 in both the Data Table compiler and the disassembler. The SLIC table
2089 support now conforms to "Microsoft Software Licensing Tables (SLIC and
2090 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
2091 following the ACPI header is now defined to be "Proprietary Data", and as
2092 such, can only be entered or displayed as a hex data block.
2094 Implemented full support for the MSDM table as described in the document
2095 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
2096 following the ACPI header is defined to be "Proprietary Data", and can
2097 only be entered or displayed as a hex data block.
2099 Implemented the -Pn option for the iASL Table Compiler (was only
2100 implemented for the ASL compiler). This option disables the iASL
2103 Disassembler: For disassembly of Data Tables, added a comment field
2104 around the Ascii equivalent data that is emitted as part of the "Raw
2105 Table Data" block. This prevents the iASL Preprocessor from possible
2106 confusion if/when the table is compiled.
2108 Disassembler: Added an option (-df) to force the disassembler to assume
2109 that the table being disassembled contains valid AML. This feature is
2110 useful for disassembling AML files that contain ACPI signatures other
2111 than DSDT or SSDT (such as OEMx or other signatures).
2113 Changes for the EFI version of the tools:
2114 1) Fixed a build error/issue
2115 2) Fixed a cast warning
2117 iASL: Fixed a path issue with the __FILE__ operator by making the
2118 directory prefix optional within the internal SplitInputFilename
2121 Debugger: Removed some unused global variables.
2123 Tests: Updated the makefile for proper generation of the AAPITS suite.
2126 ----------------------------------------
2127 04 February 2015. Summary of changes for version 20150204:
2129 ACPICA kernel-resident subsystem:
2131 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2132 copyright to all module headers and signons, including the standard Linux
2133 header. This affects virtually every file in the ACPICA core subsystem,
2134 iASL compiler, all ACPICA utilities, and the test suites.
2136 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
2137 A raw gpe handling mechanism was created to allow better handling of GPE
2138 storms that aren't easily managed by the normal handler. The raw handler
2139 allows disabling/renabling of the the GPE so that interrupt storms can be
2140 avoided in cases where events cannot be timely serviced. In this
2141 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
2142 GPE. This API will leave the reference counts undisturbed, thereby
2143 preventing unintentional clearing of the GPE when the intent in only to
2144 temporarily disable it. Raw handlers allow enabling and disabling of a
2145 GPE by removing GPE register locking. As such, raw handlers much provide
2146 their own locks while using GPE API's to protect access to GPE data
2150 Events: Always modify GPE registers under the GPE lock.
2151 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
2152 values. Reported as bug by joe.liu@apple.com.
2154 Unix makefiles: Separate option to disable optimizations and
2155 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
2156 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
2157 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
2158 errors when building ACPICA. This allows disabling the option without
2159 also having to disable optimazations.
2163 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2164 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
2167 --------------------------------------
2168 07 November 2014. Summary of changes for version 20141107:
2170 This release is available at https://acpica.org/downloads
2172 This release introduces and implements language extensions to ASL that
2173 provide support for symbolic ("C-style") operators and expressions. These
2174 language extensions are known collectively as ASL+.
2177 1) iASL Compiler/Disassembler and Tools:
2179 Disassembler: Fixed a problem with disassembly of the UartSerialBus
2180 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
2183 Disassembler: Fixed the Unicode macro support to add escape sequences.
2184 All non-printable ASCII values are emitted as escape sequences, as well
2185 as the standard escapes for quote and backslash. Ensures that the
2186 disassembled macro can be correctly recompiled.
2188 iASL: Added Printf/Fprintf macros for formatted output. These macros are
2189 translated to existing AML Concatenate and Store operations. Printf
2190 writes to the ASL Debug object. Fprintf allows the specification of an
2191 ASL name as the target. Only a single format specifier is required, %o,
2192 since the AML interpreter dynamically converts objects to the required
2195 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2196 (Concatenate (Concatenate (Concatenate ("", Arg0),
2197 ": Unexpected value for "), Arg1), ", "), Arg2),
2198 " at line "), Arg3), Debug)
2200 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
2201 Arg0, Arg1, Arg2, Arg3)
2203 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2204 ("", Arg1), ": "), Arg0), " Successful"), STR1)
2206 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
2208 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
2209 ASL parse tree before the AML code is generated. This allows blocks of
2210 ASL code to be removed in order to help locate and identify problem
2211 devices and/or code. David E. Box.
2213 AcpiExec: Added support (-fi) for an optional namespace object
2214 initialization file. This file specifies initial values for namespace
2215 objects as necessary for debugging and testing different ASL code paths
2216 that may be taken as a result of BIOS options.
2219 2) Overview of symbolic operator support for ASL (ASL+)
2220 -------------------------------------------------------
2222 As an extension to the ASL language, iASL implements support for symbolic
2223 (C-style) operators for math and logical expressions. This can greatly
2224 simplify ASL code as well as improve both readability and
2225 maintainability. These language extensions can exist concurrently with
2226 all legacy ASL code and expressions.
2228 The symbolic extensions are 100% compatible with existing AML
2229 interpreters, since no new AML opcodes are created. To implement the
2230 extensions, the iASL compiler transforms the symbolic expressions into
2231 the legacy ASL/AML equivalents at compile time.
2233 Full symbolic expressions are supported, along with the standard C
2234 precedence and associativity rules.
2236 Full disassembler support for the symbolic expressions is provided, and
2237 creates an automatic migration path for existing ASL code to ASL+ code
2238 via the disassembly process. By default, the disassembler now emits ASL+
2239 code with symbolic expressions. An option (-dl) is provided to force the
2240 disassembler to emit legacy ASL code if desired.
2242 Below is the complete list of the currently supported symbolic operators
2243 with examples. See the iASL User Guide for additional information.
2246 ASL+ Syntax Legacy ASL Equivalent
2247 ----------- ---------------------
2251 Z = X + Y Add (X, Y, Z)
2252 Z = X - Y Subtract (X, Y, Z)
2253 Z = X * Y Multiply (X, Y, Z)
2254 Z = X / Y Divide (X, Y, , Z)
2255 Z = X % Y Mod (X, Y, Z)
2256 Z = X << Y ShiftLeft (X, Y, Z)
2257 Z = X >> Y ShiftRight (X, Y, Z)
2258 Z = X & Y And (X, Y, Z)
2259 Z = X | Y Or (X, Y, Z)
2260 Z = X ^ Y Xor (X, Y, Z)
2265 // Logical operators
2267 (X == Y) LEqual (X, Y)
2268 (X != Y) LNotEqual (X, Y)
2269 (X < Y) LLess (X, Y)
2270 (X > Y) LGreater (X, Y)
2271 (X <= Y) LLessEqual (X, Y)
2272 (X >= Y) LGreaterEqual (X, Y)
2273 (X && Y) LAnd (X, Y)
2277 // Assignment and compound assignment operations
2280 X += Y Add (X, Y, X)
2281 X -= Y Subtract (X, Y, X)
2282 X *= Y Multiply (X, Y, X)
2283 X /= Y Divide (X, Y, , X)
2284 X %= Y Mod (X, Y, X)
2285 X <<= Y ShiftLeft (X, Y, X)
2286 X >>= Y ShiftRight (X, Y, X)
2287 X &= Y And (X, Y, X)
2289 X ^= Y Xor (X, Y, X)
2296 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
2297 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
2299 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
2301 And (MEMB, 0xFFFFFFF0, SRMB)
2302 Store (MEMB, Local2)
2303 Store (PDBM, Local1)
2304 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
2306 Or (PDBM, 0x02, PDBM)
2310 If (((R510 & 0x03FB) == 0x02E0) ||
2311 ((R520 & 0x03FB) == 0x02E0) ||
2312 ((R530 & 0x03FB) == 0x02E0) ||
2313 ((R540 & 0x03FB) == 0x02E0))
2315 SRMB = (MEMB & 0xFFFFFFF0)
2318 PDBM &= 0xFFFFFFFFFFFFFFF9
2324 Store (0x1234, Local1)
2325 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
2326 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
2327 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
2328 Store (Index (PKG1, 0x03), Local6)
2329 Store (Add (Local3, Local2), Debug)
2330 Add (Local1, 0x0F, Local2)
2331 Add (Local1, Multiply (Local2, Local3), Local2)
2332 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
2336 Local3 = (((Local1 + TEST) + 0x20) * Local2)
2337 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
2338 Local3 = (Local1 + (TEST + (0x20 * Local2)))
2339 Local6 = Index (PKG1, 0x03)
2340 Debug = (Local3 + Local2)
2341 Local2 = (Local1 + 0x0F)
2342 Local2 = (Local1 + (Local2 * Local3))
2343 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
2346 ----------------------------------------
2347 26 September 2014. Summary of changes for version 20140926:
2349 1) ACPICA kernel-resident subsystem:
2351 Updated the GPIO operation region handler interface (GeneralPurposeIo).
2352 In order to support GPIO Connection objects with multiple pins, along
2353 with the related Field objects, the following changes to the interface
2354 have been made: The Address is now defined to be the offset in bits of
2355 the field unit from the previous invocation of a Connection. It can be
2356 viewed as a "Pin Number Index" into the connection resource descriptor.
2357 The BitWidth is the exact bit width of the field. It is usually one bit,
2358 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
2359 additional information and examples.
2361 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
2362 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
2363 by the firmware), so that they cannot fire until they are enabled via
2364 AcpiUpdateAllGpes. Rafael J. Wysocki.
2366 Added a new return flag for the Event/GPE status interfaces --
2367 AcpiGetEventStatus and AcpiGetGpeStatus. The new
2368 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
2369 GPE currently has a handler associated with it, and can thus actually
2370 affect the system. Lv Zheng.
2372 Example Code and Data Size: These are the sizes for the OS-independent
2373 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2374 debug version of the code includes the debug output trace mechanism and
2375 has a much larger code and data size.
2378 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2379 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2381 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2382 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2384 2) iASL Compiler/Disassembler and Tools:
2386 iASL: Fixed a memory allocation/free regression introduced in 20140828
2387 that could cause the compiler to crash. This was introduced inadvertently
2388 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
2391 iASL: Removed two error messages that have been found to create false
2392 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
2393 1) Illegal forward reference within a method
2394 2) Illegal reference across two methods
2396 iASL: Implemented a new option (-lm) to create a hardware mapping file
2397 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2398 works for both the compiler and disassembler. See the iASL compiler user
2399 guide for additional information and examples (section 6.4.6).
2401 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2402 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2403 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2405 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2406 unless STDIN is actually a terminal. Assists with batch-mode processing.
2409 Disassembler/AcpiHelp: Added another large group of recognized _HID
2413 ----------------------------------------
2414 28 August 2014. Summary of changes for version 20140828:
2416 1) ACPICA kernel-resident subsystem:
2418 Fixed a problem related to the internal use of the Timer() operator where
2419 a 64-bit divide could cause an attempted link to a double-precision math
2420 library. This divide is not actually necessary, so the code was
2421 restructured to eliminate it. Lv Zheng.
2423 ACPI 5.1: Added support for the runtime validation of the _DSD package
2424 (similar to the iASL support).
2426 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2427 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
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: 98.8K Code, 27.3K Data, 126.1K Total
2436 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2438 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2439 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2441 2) iASL Compiler/Disassembler and Tools:
2443 AcpiExec: Fixed a problem on unix systems where the original terminal
2444 state was not always properly restored upon exit. Seen when using the -v
2445 option. ACPICA BZ 1104.
2447 iASL: Fixed a problem with the validation of the ranges/length within the
2448 Memory24 resource descriptor. There was a boundary condition when the
2449 range was equal to the (length -1) caused by the fact that these values
2450 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
2452 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
2454 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
2456 now supported properly.
2458 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
2459 in the disassembler, data table compiler, and table template generator.
2461 iASL: Added a requirement for Device() objects that one of either a _HID
2462 or _ADR must exist within the scope of a Device, as per the ACPI
2463 specification. Remove a similar requirement that was incorrectly in place
2464 for the _DSD object.
2466 iASL: Added error detection for illegal named references within control
2467 methods that would cause runtime failures. Now trapped as errors are: 1)
2468 References to objects within a non-parent control method. 2) Forward
2469 references (within a method) -- for control methods, AML interpreters use
2470 a one-pass parse of control methods. ACPICA BZ 1008.
2472 iASL: Added error checking for dependencies related to the _PSx power
2473 methods. ACPICA BZ 1029.
2474 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
2476 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
2479 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
2480 deploying the existing object and string caches and adding new caches for
2483 iASL: Split the huge parser source file into multiple subfiles to improve
2484 manageability. Generation now requires the M4 macro preprocessor, which
2485 is part of the Bison distribution on both unix and windows platforms.
2487 AcpiSrc: Fixed and removed all extraneous warnings generated during
2488 entire ACPICA source code scan and/or conversion.
2491 ----------------------------------------
2493 24 July 2014. Summary of changes for version 20140724:
2495 The ACPI 5.1 specification has been released and is available at:
2496 http://uefi.org/specs/access
2499 0) ACPI 5.1 support in ACPICA:
2501 ACPI 5.1 is fully supported in ACPICA as of this release.
2503 New predefined names. Support includes iASL and runtime ACPICA
2505 _CCA (Cache Coherency Attribute).
2506 _DSD (Device-Specific Data). David Box.
2508 Modifications to existing ACPI tables. Support includes headers, iASL
2509 Data Table compiler, disassembler, and the template generator.
2510 FADT - New fields and flags. Graeme Gregory.
2511 GTDT - One new subtable and new fields. Tomasz Nowicki.
2512 MADT - Two new subtables. Tomasz Nowicki.
2513 PCCT - One new subtable.
2516 New notification type for System Resource Affinity change events.
2519 1) ACPICA kernel-resident subsystem:
2521 Fixed a regression introduced in 20140627 where a fault can happen during
2522 the deletion of Alias AML namespace objects. The problem affected both
2523 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
2525 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
2526 simple mechanism to enable wake GPEs that have no associated handler or
2527 control method. Rafael Wysocki.
2529 Updated the AcpiEnableGpe interface to disallow the enable if there is no
2530 handler or control method associated with the particular GPE. This will
2531 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
2533 Updated GPE handling and dispatch by disabling the GPE before clearing
2534 the status bit for edge-triggered GPEs. Lv Zheng.
2536 Added Timer() support to the AML Debug object. The current timer value is
2537 now displayed with each invocation of (Store to) the debug object to
2538 enable simple generation of execution times for AML code (method
2539 execution for example.) ACPICA BZ 1093.
2541 Example Code and Data Size: These are the sizes for the OS-independent
2542 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2543 debug version of the code includes the debug output trace mechanism and
2544 has a much larger code and data size.
2547 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
2548 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2550 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2551 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2554 2) iASL Compiler/Disassembler and Tools:
2556 Fixed an issue with the recently added local printf implementation,
2557 concerning width/precision specifiers that could cause incorrect output.
2558 Lv Zheng. ACPICA BZ 1094.
2560 Disassembler: Added support to detect buffers that contain UUIDs and
2561 disassemble them to an invocation of the ToUUID operator. Also emit
2562 commented descriptions of known ACPI-related UUIDs.
2564 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
2565 -u. Adds three new files.
2567 iASL: Update table compiler and disassembler for DMAR table changes that
2568 were introduced in September 2013. With assistance by David Woodhouse.
2570 ----------------------------------------
2571 27 June 2014. Summary of changes for version 20140627:
2573 1) ACPICA kernel-resident subsystem:
2575 Formatted Output: Implemented local versions of standard formatted output
2576 utilities such as printf, etc. Over time, it has been discovered that
2577 there are in fact many portability issues with printf, and the addition
2578 of this feature will fix/prevent these issues once and for all. Some
2579 known issues are summarized below:
2581 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
2582 for the Linux kernel and is %uI64 for some MSVC versions.
2583 2) Invoking printf consistently in a manner that is portable across both
2584 32-bit and 64-bit platforms is difficult at best in many situations.
2585 3) The output format for pointers varies from system to system (leading
2586 zeros especially), and leads to inconsistent output from ACPICA across
2588 4) Certain platform-specific printf formats may conflict with ACPICA use.
2589 5) If there is no local C library available, ACPICA now has local support
2592 -- To address these printf issues in a complete manner, ACPICA now
2593 directly implements a small subset of printf format specifiers, only
2594 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
2596 Implemented support for ACPICA generation within the EFI environment.
2597 Initially, the AcpiDump utility is supported in the UEFI shell
2598 environment. Lv Zheng.
2600 Added a new external interface, AcpiLogError, to improve ACPICA
2601 portability. This allows the host to redirect error messages from the
2602 ACPICA utilities. Lv Zheng.
2604 Added and deployed new OSL file I/O interfaces to improve ACPICA
2612 There are C library implementations of these functions in the new file
2613 service_layers/oslibcfs.c -- however, the functions can be implemented by
2614 the local host in any way necessary. Lv Zheng.
2616 Implemented a mechanism to disable/enable ACPI table checksum validation
2617 at runtime. This can be useful when loading tables very early during OS
2618 initialization when it may not be possible to map the entire table in
2619 order to compute the checksum. Lv Zheng.
2621 Fixed a buffer allocation issue for the Generic Serial Bus support.
2622 Originally, a fixed buffer length was used. This change allows for
2623 variable-length buffers based upon the protocol indicated by the field
2624 access attributes. Reported by Lan Tianyu. Lv Zheng.
2626 Fixed a problem where an object detached from a namespace node was not
2627 properly terminated/cleared and could cause a circular list problem if
2628 reattached. ACPICA BZ 1063. David Box.
2630 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2632 Fixed a possible memory leak in an error return path within the function
2633 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2635 Example Code and Data Size: These are the sizes for the OS-independent
2636 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2637 debug version of the code includes the debug output trace mechanism and
2638 has a much larger code and data size.
2641 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2642 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2644 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2645 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2648 2) iASL Compiler/Disassembler and Tools:
2650 Disassembler: Add dump of ASCII equivalent text within a comment at the
2651 end of each line of the output for the Buffer() ASL operator.
2653 AcpiDump: Miscellaneous changes:
2654 Fixed repetitive table dump in -n mode.
2655 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
2656 the ACPI 2.0 GUID fails.
2658 iASL: Fixed a problem where the compiler could fault if incorrectly given
2659 an acpidump output file as input. ACPICA BZ 1088. David Box.
2661 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2662 they are invoked without any arguments.
2664 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2665 1086. Colin Ian King.
2667 Disassembler: Cleaned up a block of code that extracts a parent Op
2668 object. Added a comment that explains that the parent is guaranteed to be
2669 valid in this case. ACPICA BZ 1069.
2672 ----------------------------------------
2673 24 April 2014. Summary of changes for version 20140424:
2675 1) ACPICA kernel-resident subsystem:
2677 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2678 Some of these tables are known to contain a trailing NULL entry. Lv
2681 Removed an extraneous error message for the case where there are a large
2682 number of system GPEs (> 124). This was the "32-bit FADT register is too
2683 long to convert to GAS struct" message, which is irrelevant for GPEs
2684 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2685 (limited capacity) GAS bit length. Also, several changes to ensure proper
2686 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2689 Implemented and deployed additional configuration support for the public
2690 ACPICA external interfaces. Entire classes of interfaces can now be
2691 easily modified or configured out, replaced by stubbed inline functions
2692 by default. Lv Zheng.
2694 Moved all public ACPICA runtime configuration globals to the public
2695 ACPICA external interface file for convenience. Also, removed some
2696 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2698 Documentation: Added a new section to the ACPICA reference describing the
2699 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2700 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2703 Example Code and Data Size: These are the sizes for the OS-independent
2704 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2705 debug version of the code includes the debug output trace mechanism and
2706 has a much larger code and data size.
2709 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2710 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2712 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2713 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2716 2) iASL Compiler/Disassembler and Tools:
2718 iASL and disassembler: Add full support for the LPIT table (Low Power
2719 Idle Table). Includes support in the disassembler, data table compiler,
2720 and template generator.
2723 1) Add option to force the use of the RSDT (over the XSDT).
2724 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2726 iASL: Add check for predefined packages that are too large. For
2727 predefined names that contain subpackages, check if each subpackage is
2728 too large. (Check for too small already exists.)
2730 Debugger: Updated the GPE command (which simulates a GPE by executing the
2731 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2732 to the GPE 0/1 FADT-defined blocks.
2734 Unix application OSL: Update line-editing support. Add additional error
2735 checking and take care not to reset terminal attributes on exit if they
2736 were never set. This should help guarantee that the terminal is always
2737 left in the previous state on program exit.
2740 ----------------------------------------
2741 25 March 2014. Summary of changes for version 20140325:
2743 1) ACPICA kernel-resident subsystem:
2745 Updated the auto-serialize feature for control methods. This feature
2746 automatically serializes all methods that create named objects in order
2747 to prevent runtime errors. The update adds support to ignore the
2748 currently executing AML SyncLevel when invoking such a method, in order
2749 to prevent disruption of any existing SyncLevel priorities that may exist
2750 in the AML code. Although the use of SyncLevels is relatively rare, this
2751 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2752 appear on some machines starting with the 20140214 release.
2754 Added a new external interface to allow the host to install ACPI tables
2755 very early, before the namespace is even created. AcpiInstallTable gives
2756 the host additional flexibility for ACPI table management. Tables can be
2757 installed directly by the host as if they had originally appeared in the
2758 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2759 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2760 with additional internal restructuring and cleanup. See the ACPICA
2761 Reference for interface details. Lv Zheng.
2763 Added validation of the checksum for all incoming dynamically loaded
2764 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2767 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2768 and GPE handler removal. Restructured calls to eliminate possible race
2769 conditions. Lv Zheng.
2771 Added a warning for the use/execution of the ASL/AML Unload (table)
2772 operator. This will help detect and identify machines that use this
2773 operator if and when it is ever used. This operator has never been seen
2774 in the field and the usage model and possible side-effects of the drastic
2775 runtime action of a full table removal are unknown.
2777 Reverted the use of #pragma push/pop which was introduced in the 20140214
2778 release. It appears that push and pop are not implemented by enough
2779 compilers to make the use of this feature feasible for ACPICA at this
2780 time. However, these operators may be deployed in a future ACPICA
2783 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2786 Source code generation:
2787 1) Disabled the use of the "strchr" macro for the gcc-specific
2788 generation. For some versions of gcc, this macro can periodically expose
2789 a compiler bug which in turn causes compile-time error(s).
2790 2) Added support for PPC64 compilation. Colin Ian King.
2792 Example Code and Data Size: These are the sizes for the OS-independent
2793 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2794 debug version of the code includes the debug output trace mechanism and
2795 has a much larger code and data size.
2798 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2799 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2801 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2802 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2805 2) iASL Compiler/Disassembler and Tools:
2807 Disassembler: Added several new features to improve the readability of
2808 the resulting ASL code. Extra information is emitted within comment
2809 fields in the ASL code:
2810 1) Known _HID/_CID values are decoded to descriptive text.
2811 2) Standard values for the Notify() operator are decoded to descriptive
2813 3) Target operands are expanded to full pathnames (in a comment) when
2816 Disassembler: Miscellaneous updates for extern() handling:
2817 1) Abort compiler if file specified by -fe option does not exist.
2818 2) Silence unnecessary warnings about argument count mismatches.
2819 3) Update warning messages concerning unresolved method externals.
2820 4) Emit "UnknownObj" keyword for externals whose type cannot be
2824 1) Added the -a option to display both the ASL syntax and the AML
2825 encoding for an input ASL operator. This effectively displays all known
2826 information about an ASL operator with one AcpiHelp invocation.
2827 2) Added substring match support (similar to a wildcard) for the -i
2828 (_HID/PNP IDs) option.
2830 iASL/Disassembler: Since this tool does not yet support execution on big-
2831 endian machines, added detection of endianness and an error message if
2832 execution is attempted on big-endian. Support for big-endian within iASL
2833 is a feature that is on the ACPICA to-be-done list.
2836 1) Remove option to extract binary files from an acpidump; this function
2837 is made obsolete by the AcpiXtract utility.
2838 2) General cleanup of open files and allocated buffers.
2841 ----------------------------------------
2842 14 February 2014. Summary of changes for version 20140214:
2844 1) ACPICA kernel-resident subsystem:
2846 Implemented a new mechanism to proactively prevent problems with ill-
2847 behaved reentrant control methods that create named ACPI objects. This
2848 behavior is illegal as per the ACPI specification, but is nonetheless
2849 frequently seen in the field. Previously, this could lead to an
2850 AE_ALREADY_EXISTS exception if the method was actually entered by more
2851 than one thread. This new mechanism detects such methods at table load
2852 time and marks them "serialized" to prevent reentrancy. A new global
2853 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2854 feature if desired. This mechanism and global option obsoletes and
2855 supersedes the previous AcpiGbl_SerializeAllMethods option.
2857 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2858 respond TRUE to _OSI queries with this string. It is the stated policy of
2859 ACPICA to add new strings to the _OSI support as soon as possible after
2860 they are defined. See the full ACPICA _OSI policy which has been added to
2861 the utilities/utosi.c file.
2863 Hardened/updated the _PRT return value auto-repair code:
2864 1) Do not abort the repair on a single subpackage failure, continue to
2865 check all subpackages.
2866 2) Add check for the minimum subpackage length (4).
2867 3) Properly handle extraneous NULL package elements.
2869 Added support to avoid the possibility of infinite loops when traversing
2870 object linked lists. Never allow an infinite loop, even in the face of
2871 corrupted object lists.
2873 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2874 pack(pop) directives to ensure that the ACPICA headers are independent of
2875 compiler settings or other host headers.
2877 Example Code and Data Size: These are the sizes for the OS-independent
2878 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2879 debug version of the code includes the debug output trace mechanism and
2880 has a much larger code and data size.
2883 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2884 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2886 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2887 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2890 2) iASL Compiler/Disassembler and Tools:
2892 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2893 first reserved field was incorrectly forced to have a value of zero. This
2894 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2896 Debugger: Added missing support for the "Extra" and "Data" subobjects
2897 when displaying object data.
2899 Debugger: Added support to display entire object linked lists when
2900 displaying object data.
2902 iASL: Removed the obsolete -g option to obtain ACPI tables from the
2903 Windows registry. This feature has been superseded by the acpidump
2907 ----------------------------------------
2908 14 January 2014. Summary of changes for version 20140114:
2910 1) ACPICA kernel-resident subsystem:
2912 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2913 copyright to all module headers and signons, including the standard Linux
2914 header. This affects virtually every file in the ACPICA core subsystem,
2915 iASL compiler, all ACPICA utilities, and the test suites.
2917 Improved parameter validation for AcpiInstallGpeBlock. Added the
2919 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
2920 2) There is not already a GPE block attached to the device.
2921 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
2924 Correctly support "references" in the ACPI_OBJECT. This change fixes the
2925 support to allow references (namespace nodes) to be passed as arguments
2926 to control methods via the evaluate object interface. This is probably
2927 most useful for testing purposes, however.
2929 Improved support for 32/64 bit physical addresses in printf()-like
2930 output. This change improves the support for physical addresses in printf
2931 debug statements and other output on both 32-bit and 64-bit hosts. It
2932 consistently outputs the appropriate number of bytes for each host. The
2933 %p specifier is unsatisfactory since it does not emit uniform output on
2934 all hosts/clib implementations (on some, leading zeros are not supported,
2935 leading to difficult-to-read output).
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: 96.2K Code, 27.0K Data, 123.2K Total
2944 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2946 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2947 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2950 2) iASL Compiler/Disassembler and Tools:
2952 iASL: Fix a possible fault when using the Connection() operator. Fixes a
2953 problem if the parent Field definition for the Connection operator refers
2954 to an operation region that does not exist. ACPICA BZ 1064.
2956 AcpiExec: Load of local test tables is now optional. The utility has the
2957 capability to load some various tables to test features of ACPICA.
2958 However, there are enough of them that the output of the utility became
2959 confusing. With this change, only the required local tables are displayed
2960 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
2961 line specification. This makes the default output simler and easier to
2962 understand. The -el command line option restores the original behavior
2963 for testing purposes.
2965 AcpiExec: Added support for overlapping operation regions. This change
2966 expands the simulation of operation regions by supporting regions that
2967 overlap within the given address space. Supports SystemMemory and
2968 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
2970 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
2971 allows AcpiExec to simulate these address spaces, similar to the current
2972 support for SystemMemory and SystemIO.
2974 Debugger: Added new command to read/write/compare all namespace objects.
2975 The command "test objects" will exercise the entire namespace by writing
2976 new values to each data object, and ensuring that the write was
2977 successful. The original value is then restored and verified.
2979 Debugger: Added the "test predefined" command. This change makes this
2980 test public and puts it under the new "test" command. The test executes
2981 each and every predefined name within the current namespace.
2984 ----------------------------------------
2985 18 December 2013. Summary of changes for version 20131218:
2987 Global note: The ACPI 5.0A specification was released this month. There
2988 are no changes needed for ACPICA since this release of ACPI is an
2989 errata/clarification release. The specification is available at
2993 1) ACPICA kernel-resident subsystem:
2995 Added validation of the XSDT root table if it is present. Some older
2996 platforms contain an XSDT that is ill-formed or otherwise invalid (such
2997 as containing some or all entries that are NULL pointers). This change
2998 adds a new function to validate the XSDT before actually using it. If the
2999 XSDT is found to be invalid, ACPICA will now automatically fall back to
3000 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
3001 ACPICA and enhanced by Lv Zheng and Bob Moore.
3003 Added a runtime option to ignore the XSDT and force the use of the RSDT.
3004 This change adds a runtime option that will force ACPICA to use the RSDT
3005 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
3006 requires that an XSDT be used instead of the RSDT, the XSDT has been
3007 found to be corrupt or ill-formed on some machines. Lv Zheng.
3009 Added a runtime option to favor 32-bit FADT register addresses over the
3010 64-bit addresses. This change adds an option to favor 32-bit FADT
3011 addresses when there is a conflict between the 32-bit and 64-bit versions
3012 of the same register. The default behavior is to use the 64-bit version
3013 in accordance with the ACPI specification. This can now be overridden via
3014 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
3016 During the change above, the internal "Convert FADT" and "Verify FADT"
3017 functions have been merged to simplify the code, making it easier to
3018 understand and maintain. ACPICA BZ 933.
3020 Improve exception reporting and handling for GPE block installation.
3021 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
3022 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
3024 Added helper macros to extract bus/segment numbers from the HEST table.
3025 This change adds two macros to extract the encoded bus and segment
3026 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
3027 Betty Dall <betty.dall@hp.com>
3029 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
3030 by ACPICA. It is not a public macro, so it should have no effect on
3031 existing OSV code. Lv Zheng.
3033 Example Code and Data Size: These are the sizes for the OS-independent
3034 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3035 debug version of the code includes the debug output trace mechanism and
3036 has a much larger code and data size.
3039 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3040 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3042 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3043 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3046 2) iASL Compiler/Disassembler and Tools:
3048 Disassembler: Improved pathname support for emitted External()
3049 statements. This change adds full pathname support for external names
3050 that have been resolved internally by the inclusion of additional ACPI
3051 tables (via the iASL -e option). Without this change, the disassembler
3052 can emit multiple externals for the same object, or it become confused
3053 when the Scope() operator is used on an external object. Overall, greatly
3054 improves the ability to actually recompile the emitted ASL code when
3055 objects a referenced across multiple ACPI tables. Reported by Michael
3056 Tsirkin (mst@redhat.com).
3058 Tests/ASLTS: Updated functional control suite to execute with no errors.
3059 David Box. Fixed several errors related to the testing of the interpreter
3060 slack mode. Lv Zheng.
3062 iASL: Added support to detect names that are declared within a control
3063 method, but are unused (these are temporary names that are only valid
3064 during the time the method is executing). A remark is issued for these
3065 cases. ACPICA BZ 1022.
3067 iASL: Added full support for the DBG2 table. Adds full disassembler,
3068 table compiler, and template generator support for the DBG2 table (Debug
3071 iASL: Added full support for the PCCT table, update the table definition.
3072 Updates the PCCT table definition in the actbl3.h header and adds table
3073 compiler and template generator support.
3075 iASL: Added an option to emit only error messages (no warnings/remarks).
3076 The -ve option will enable only error messages, warnings and remarks are
3077 suppressed. This can simplify debugging when only the errors are
3078 important, such as when an ACPI table is disassembled and there are many
3079 warnings and remarks -- but only the actual errors are of real interest.
3081 Example ACPICA code (source/tools/examples): Updated the example code so
3082 that it builds to an actual working program, not just example code. Added
3083 ACPI tables and execution of an example control method in the DSDT. Added
3084 makefile support for Unix generation.
3087 ----------------------------------------
3088 15 November 2013. Summary of changes for version 20131115:
3090 This release is available at https://acpica.org/downloads
3093 1) ACPICA kernel-resident subsystem:
3095 Resource Manager: Fixed loop termination for the "get AML length"
3096 function. The loop previously had an error termination on a NULL resource
3097 pointer, which can never happen since the loop simply increments a valid
3098 resource pointer. This fix changes the loop to terminate with an error on
3099 an invalid end-of-buffer condition. The problem can be seen as an
3100 infinite loop by callers to AcpiSetCurrentResources with an invalid or
3101 corrupted resource descriptor, or a resource descriptor that is missing
3102 an END_TAG descriptor. Reported by Dan Carpenter
3103 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
3105 Table unload and ACPICA termination: Delete all attached data objects
3106 during namespace node deletion. This fix updates namespace node deletion
3107 to delete the entire list of attached objects (attached via
3108 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
3109 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
3111 ACPICA termination: Added support to delete all objects attached to the
3112 root namespace node. This fix deletes any and all objects that have been
3113 attached to the root node via AcpiAttachData. Previously, none of these
3114 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
3116 Debug output: Do not emit the function nesting level for the in-kernel
3117 build. The nesting level is really only useful during a single-thread
3118 execution. Therefore, only enable this output for the AcpiExec utility.
3119 Also, only emit the thread ID when executing under AcpiExec (Context
3120 switches are still always detected and a message is emitted). ACPICA BZ
3123 Example Code and Data Size: These are the sizes for the OS-independent
3124 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3125 debug version of the code includes the debug output trace mechanism and
3126 has a much larger code and data size.
3129 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3130 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3132 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3133 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3136 2) iASL Compiler/Disassembler and Tools:
3138 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
3139 correct portable POSIX header for terminal control functions.
3141 Disassembler: Fixed control method invocation issues related to the use
3142 of the CondRefOf() operator. The problem is seen in the disassembly where
3143 control method invocations may not be disassembled properly if the
3144 control method name has been used previously as an argument to CondRefOf.
3145 The solution is to not attempt to emit an external declaration for the
3146 CondRefOf target (it is not necessary in the first place). This prevents
3147 disassembler object type confusion. ACPICA BZ 988.
3149 Unix Makefiles: Added an option to disable compiler optimizations and the
3150 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
3151 with optimizations (reportedly, gcc 4.4 for example). This change adds a
3152 command line option for make (NOOPT) that disables all compiler
3153 optimizations and the _FORTIFY_SOURCE compiler flag. The default
3154 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
3155 1034. Lv Zheng, Bob Moore.
3157 Tests/ASLTS: Added options to specify individual test cases and modes.
3158 This allows testers running aslts.sh to optionally specify individual
3159 test modes and test cases. Also added an option to disable the forced
3160 generation of the ACPICA tools from source if desired. Lv Zheng.
3162 ----------------------------------------
3163 27 September 2013. Summary of changes for version 20130927:
3165 This release is available at https://acpica.org/downloads
3168 1) ACPICA kernel-resident subsystem:
3170 Fixed a problem with store operations to reference objects. This change
3171 fixes a problem where a Store operation to an ArgX object that contained
3173 reference to a field object did not complete the automatic dereference
3175 then write to the actual field object. Instead, the object type of the
3176 field object was inadvertently changed to match the type of the source
3177 operand. The new behavior will actually write to the field object (buffer
3178 field or field unit), thus matching the correct ACPI-defined behavior.
3180 Implemented support to allow the host to redefine individual OSL
3181 prototypes. This change enables the host to redefine OSL prototypes found
3182 in the acpiosxf.h file. This allows the host to implement OSL interfaces
3183 with a macro or inlined function. Further, it allows the host to add any
3184 additional required modifiers such as __iomem, __init, __exit, etc., as
3185 necessary on a per-interface basis. Enables maximum flexibility for the
3186 OSL interfaces. Lv Zheng.
3188 Hardcoded the access width for the FADT-defined reset register. The ACPI
3189 specification requires the reset register width to be 8 bits. ACPICA now
3190 hardcodes the width to 8 and ignores the FADT width value. This provides
3191 compatibility with other ACPI implementations that have allowed BIOS code
3192 with bad register width values to go unnoticed. Matthew Garett, Bob
3196 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
3198 in the OSL header (acpiosxf). The change modifies the position of this
3199 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
3200 build issues if the OSL defines the implementation of the interface to be
3201 an inline stub function. Lv Zheng.
3203 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
3204 initialization interfaces. This change adds a new macro for the main init
3205 and terminate external interfaces in order to support hosts that require
3206 additional or different processing for these functions. Changed from
3207 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
3210 Cleaned up the memory allocation macros for configurability. In the
3212 case, the ACPI_ALLOCATE and related macros now resolve directly to their
3213 respective AcpiOs* OSL interfaces. Two options:
3214 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
3215 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
3216 2) For AcpiExec (and for debugging), the macros can optionally be
3218 to the local ACPICA interfaces that track each allocation (local tracking
3219 is used to immediately detect memory leaks).
3222 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
3223 to predefine this macro to either TRUE or FALSE during the system build.
3225 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
3227 Example Code and Data Size: These are the sizes for the OS-independent
3228 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3229 debug version of the code includes the debug output trace mechanism and
3230 has a much larger code and data size.
3233 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3234 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3236 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3237 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3240 2) iASL Compiler/Disassembler and Tools:
3242 iASL: Implemented wildcard support for the -e option. This simplifies use
3243 when there are many SSDTs that must be included to resolve external
3245 declarations. ACPICA BZ 1041. Example:
3246 iasl -e ssdt*.dat -d dsdt.dat
3248 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
3249 adds a portable module that implements full history and limited line
3250 editing for Unix and Linux systems. It does not use readline() due to
3251 portability issues. Instead it uses the POSIX termio interface to put the
3252 terminal in raw input mode so that the various special keys can be
3254 (such as up/down-arrow for history support and left/right-arrow for line
3255 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
3257 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
3258 one or more spaces. This provides compatible with early or different
3259 versions of the AcpiDump utility. ACPICA BZ 1044.
3261 AcpiDump: Do not ignore tables that contain only an ACPI table header.
3262 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
3263 no other data. This change adds support to dump these tables. Any tables
3264 shorter than the length of an ACPI table header remain in error (an error
3265 message is emitted). Reported by Yi Li.
3267 Debugger: Echo actual command along with the "unknown command" message.
3269 ----------------------------------------
3270 23 August 2013. Summary of changes for version 20130823:
3272 1) ACPICA kernel-resident subsystem:
3274 Implemented support for host-installed System Control Interrupt (SCI)
3275 handlers. Certain ACPI functionality requires the host to handle raw
3276 SCIs. For example, the "SCI Doorbell" that is defined for memory power
3277 state support requires the host device driver to handle SCIs to examine
3278 if the doorbell has been activated. Multiple SCI handlers can be
3279 installed to allow for future expansion. New external interfaces are
3280 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
3281 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
3283 Operation region support: Never locally free the handler "context"
3284 pointer. This change removes some dangerous code that attempts to free
3285 the handler context pointer in some (rare) circumstances. The owner of
3286 the handler owns this pointer and the ACPICA code should never touch it.
3287 Although not seen to be an issue in any kernel, it did show up as a
3288 problem (fault) under AcpiExec. Also, set the internal storage field for
3289 the context pointer to zero when the region is deactivated, simply for
3290 sanity. David Box. ACPICA BZ 1039.
3292 AcpiRead: On error, do not modify the return value target location. If an
3293 error happens in the middle of a split 32/32 64-bit I/O operation, do not
3294 modify the target of the return value pointer. Makes the code consistent
3295 with the rest of ACPICA. Bjorn Helgaas.
3297 Example Code and Data Size: These are the sizes for the OS-independent
3298 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3299 debug version of the code includes the debug output trace mechanism and
3300 has a much larger code and data size.
3303 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3304 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3306 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3307 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
3310 2) iASL Compiler/Disassembler and Tools:
3312 AcpiDump: Implemented several new features and fixed some problems:
3313 1) Added support to dump the RSDP, RSDT, and XSDT tables.
3314 2) Added support for multiple table instances (SSDT, UEFI).
3315 3) Added option to dump "customized" (overridden) tables (-c).
3316 4) Fixed a problem where some table filenames were improperly
3318 5) Improved some error messages, removed some unnecessary messages.
3320 iASL: Implemented additional support for disassembly of ACPI tables that
3321 contain invocations of external control methods. The -fe<file> option
3322 allows the import of a file that specifies the external methods along
3323 with the required number of arguments for each -- allowing for the
3324 correct disassembly of the table. This is a workaround for a limitation
3325 of AML code where the disassembler often cannot determine the number of
3326 arguments required for an external control method and generates incorrect
3327 ASL code. See the iASL reference for details. ACPICA BZ 1030.
3329 Debugger: Implemented a new command (paths) that displays the full
3330 pathnames (namepaths) and object types of all objects in the namespace.
3331 This is an alternative to the namespace command.
3333 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
3334 mechanism and any installed handlers.
3336 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
3337 This can occur if there are too many parent prefixes in a namepath (for
3338 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
3340 Application OSLs: Set the return value for the PCI read functions. These
3341 functions simply return AE_OK, but should set the return value to zero
3342 also. This change implements this. ACPICA BZ 1038.
3344 Debugger: Prevent possible command line buffer overflow. Increase the
3345 size of a couple of the debugger line buffers, and ensure that overflow
3346 cannot happen. ACPICA BZ 1037.
3348 iASL: Changed to abort immediately on serious errors during the parsing
3349 phase. Due to the nature of ASL, there is no point in attempting to
3350 compile these types of errors, and they typically end up causing a
3351 cascade of hundreds of errors which obscure the original problem.
3353 ----------------------------------------
3354 25 July 2013. Summary of changes for version 20130725:
3356 1) ACPICA kernel-resident subsystem:
3358 Fixed a problem with the DerefOf operator where references to FieldUnits
3359 and BufferFields incorrectly returned the parent object, not the actual
3360 value of the object. After this change, a dereference of a FieldUnit
3361 reference results in a read operation on the field to get the value, and
3362 likewise, the appropriate BufferField value is extracted from the target
3365 Fixed a problem where the _WAK method could cause a fault under these
3366 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
3367 method returned no value. The problem is rarely seen because most kernels
3368 run ACPICA in slack mode.
3370 For the DerefOf operator, a fatal error now results if an attempt is made
3371 to dereference a reference (created by the Index operator) to a NULL
3372 package element. Provides compatibility with other ACPI implementations,
3373 and this behavior will be added to a future version of the ACPI
3376 The ACPI Power Management Timer (defined in the FADT) is now optional.
3377 This provides compatibility with other ACPI implementations and will
3378 appear in the next version of the ACPI specification. If there is no PM
3379 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
3380 zero in the FADT indicates no PM timer.
3382 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
3383 allows the host to globally enable/disable all vendor strings, all
3384 feature strings, or both. Intended to be primarily used for debugging
3385 purposes only. Lv Zheng.
3387 Expose the collected _OSI data to the host via a global variable. This
3388 data tracks the highest level vendor ID that has been invoked by the BIOS
3389 so that the host (and potentially ACPICA itself) can change behaviors
3390 based upon the age of the BIOS.
3392 Example Code and Data Size: These are the sizes for the OS-independent
3393 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3394 debug version of the code includes the debug output trace mechanism and
3395 has a much larger code and data size.
3398 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3399 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3401 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3402 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3405 2) iASL Compiler/Disassembler and Tools:
3407 iASL: Created the following enhancements for the -so option (create
3409 1)Add offsets for the last nameseg in each namepath for every supported
3411 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3412 3)Add the actual AML opcode for the parent object of every supported
3414 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3416 Disassembler: Emit all unresolved external symbols in a single block.
3417 These are external references to control methods that could not be
3418 resolved, and thus, the disassembler had to make a guess at the number of
3421 iASL: The argument to the -T option (create table template) is now
3422 optional. If not specified, the default table is a DSDT, typically the
3425 ----------------------------------------
3426 26 June 2013. Summary of changes for version 20130626:
3428 1) ACPICA kernel-resident subsystem:
3430 Fixed an issue with runtime repair of the _CST object. Null or invalid
3431 elements were not always removed properly. Lv Zheng.
3433 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3434 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3435 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3436 makes the system-wide number of GPEs essentially unlimited.
3438 Example Code and Data Size: These are the sizes for the OS-independent
3439 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3440 debug version of the code includes the debug output trace mechanism and
3441 has a much larger code and data size.
3444 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3445 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3447 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3448 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3451 2) iASL Compiler/Disassembler and Tools:
3453 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
3454 hosts. Now supports Linux, FreeBSD, and Windows.
3456 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
3457 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
3459 iASL/Preprocessor: Implemented full support for nested
3460 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
3462 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
3463 max. The original purpose of this constraint was to limit the amount of
3464 debug output. However, the string function in question (UtPrintString) is
3465 now used for the disassembler also, where 256 bytes is insufficient.
3466 Reported by RehabMan@GitHub.
3468 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
3469 tables. ACPICA BZ 999. Lv Zheng.
3471 iASL: Fixed a couple of error exit issues that could result in a "Could
3472 not delete <file>" message during ASL compilation.
3474 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
3475 the actual signatures for these tables are "FACP" and "APIC",
3478 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
3479 tables are allowed to have multiple instances.
3481 ----------------------------------------
3482 17 May 2013. Summary of changes for version 20130517:
3484 1) ACPICA kernel-resident subsystem:
3486 Fixed a regression introduced in version 20130328 for _INI methods. This
3487 change fixes a problem introduced in 20130328 where _INI methods are no
3488 longer executed properly because of a memory block that was not
3489 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
3490 <tomasz.nowicki@linaro.org>.
3492 Fixed a possible problem with the new extended sleep registers in the
3494 5.0 FADT. Do not use these registers (even if populated) unless the HW-
3495 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
3498 Implemented return value repair code for _CST predefined objects: Sort
3500 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
3502 Implemented a debug-only option to disable loading of SSDTs from the
3503 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
3504 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
3505 acglobal.h - ACPICA BZ 1005. Lv Zheng.
3507 Fixed some issues in the ACPICA initialization and termination code:
3508 Tomasz Nowicki <tomasz.nowicki@linaro.org>
3509 1) Clear events initialized flag upon event component termination. ACPICA
3511 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
3512 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
3513 4) Clear debug buffer global on termination to prevent possible multiple
3514 delete. ACPICA BZ 1010.
3516 Standardized all switch() blocks across the entire source base. After
3518 years, different formatting for switch() had crept in. This change makes
3519 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
3521 Split some files to enhance ACPICA modularity and configurability:
3522 1) Split buffer dump routines into utilities/utbuffer.c
3523 2) Split internal error message routines into utilities/uterror.c
3524 3) Split table print utilities into tables/tbprint.c
3525 4) Split iASL command-line option processing into asloptions.c
3527 Makefile enhancements:
3528 1) Support for all new files above.
3529 2) Abort make on errors from any subcomponent. Chao Guan.
3530 3) Add build support for Apple Mac OS X. Liang Qi.
3532 Example Code and Data Size: These are the sizes for the OS-independent
3533 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3534 debug version of the code includes the debug output trace mechanism and
3535 has a much larger code and data size.
3538 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3539 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3541 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3542 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3545 2) iASL Compiler/Disassembler and Tools:
3547 New utility: Implemented an easily portable version of the acpidump
3548 utility to extract ACPI tables from the system (or a file) in an ASCII
3550 dump format. The top-level code implements the various command line
3551 options, file I/O, and table dump routines. To port to a new host, only
3552 three functions need to be implemented to get tables -- since this
3553 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
3554 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
3555 1) The Windows version obtains the ACPI tables from the Registry.
3556 2) The Linux version is under development.
3557 3) Other hosts - If an OS-dependent module is submitted, it will be
3558 distributed with ACPICA.
3560 iASL: Fixed a regression for -D preprocessor option (define symbol). A
3561 restructuring/change to the initialization sequence caused this option to
3562 no longer work properly.
3564 iASL: Implemented a mechanism to disable specific warnings and remarks.
3565 Adds a new command line option, "-vw <messageid> as well as "#pragma
3566 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
3568 iASL: Fix for too-strict package object validation. The package object
3569 validation for return values from the predefined names is a bit too
3570 strict, it does not allow names references within the package (which will
3571 be resolved at runtime.) These types of references cannot be validated at
3572 compile time. This change ignores named references within package objects
3573 for names that return or define static packages.
3575 Debugger: Fixed the 80-character command line limitation for the History
3576 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
3578 iASL: Added control method and package support for the -so option
3579 (generates AML offset table for BIOS support.)
3581 iASL: issue a remark if a non-serialized method creates named objects. If
3582 a thread blocks within the method for any reason, and another thread
3583 enters the method, the method will fail because an attempt will be made
3585 create the same (named) object twice. In this case, issue a remark that
3586 the method should be marked serialized. NOTE: may become a warning later.
3589 ----------------------------------------
3590 18 April 2013. Summary of changes for version 20130418:
3592 1) ACPICA kernel-resident subsystem:
3594 Fixed a possible buffer overrun during some rare but specific field unit
3595 read operations. This overrun can only happen if the DSDT version is 1 --
3596 meaning that all AML integers are 32 bits -- and the field length is
3597 between 33 and 55 bits long. During the read, an internal buffer object
3599 created for the field unit because the field is larger than an integer
3601 bits). However, in this case, the buffer will be incorrectly written
3602 beyond the end because the buffer length is less than the internal
3604 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
3605 long, but a full 8 bytes will be written.
3607 Updated the Embedded Controller "orphan" _REG method support. This refers
3608 to _REG methods under the EC device that have no corresponding operation
3609 region. This is allowed by the ACPI specification. This update removes a
3610 dependency on the existence an ECDT table. It will execute an orphan _REG
3611 method as long as the operation region handler for the EC is installed at
3612 the EC device node and not the namespace root. Rui Zhang (original
3613 update), Bob Moore (update/integrate).
3615 Implemented run-time argument typechecking for all predefined ACPI names
3616 (_STA, _BIF, etc.) This change performs object typechecking on all
3617 incoming arguments for all predefined names executed via
3618 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
3619 passing correct object types as well as the correct number of arguments
3620 (therefore identifying any issues immediately). Also, the ASL/namespace
3621 definition of the predefined name is checked against the ACPI
3622 specification for the proper argument count. Adds one new file,
3625 Changed an exception code for the ASL UnLoad() operator. Changed the
3626 exception code for the case where the input DdbHandle is invalid, from
3627 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3629 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3630 global makefile. The use of this flag causes compiler errors on earlier
3631 versions of GCC, so it has been removed for compatibility.
3633 Miscellaneous cleanup:
3634 1) Removed some unused/obsolete macros
3635 2) Fixed a possible memory leak in the _OSI support
3636 3) Removed an unused variable in the predefined name support
3637 4) Windows OSL: remove obsolete reference to a memory list field
3639 Example Code and Data Size: These are the sizes for the OS-independent
3640 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3641 debug version of the code includes the debug output trace mechanism and
3642 has a much larger code and data size.
3645 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3646 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3648 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3649 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3652 2) iASL Compiler/Disassembler and Tools:
3654 AcpiExec: Added installation of a handler for the SystemCMOS address
3655 space. This prevents control method abort if a method accesses this
3658 AcpiExec: Added support for multiple EC devices, and now install EC
3659 operation region handler(s) at the actual EC device instead of the
3660 namespace root. This reflects the typical behavior of host operating
3663 AcpiExec: Updated to ensure that all operation region handlers are
3664 installed before the _REG methods are executed. This prevents a _REG
3665 method from aborting if it accesses an address space has no handler.
3666 AcpiExec installs a handler for every possible address space.
3668 Debugger: Enhanced the "handlers" command to display non-root handlers.
3669 This change enhances the handlers command to display handlers associated
3670 with individual devices throughout the namespace, in addition to the
3671 currently supported display of handlers associated with the root
3675 ASL Test Suite: Several test suite errors have been identified and
3676 resolved, reducing the total error count during execution. Chao Guan.
3678 ----------------------------------------
3679 28 March 2013. Summary of changes for version 20130328:
3681 1) ACPICA kernel-resident subsystem:
3683 Fixed several possible race conditions with the internal object reference
3684 counting mechanism. Some of the external ACPICA interfaces update object
3685 reference counts without holding the interpreter or namespace lock. This
3686 change adds a spinlock to protect reference count updates on the internal
3687 ACPICA objects. Reported by and with assistance from Andriy Gapon
3690 FADT support: Removed an extraneous warning for very large GPE register
3691 sets. This change removes a size mismatch warning if the legacy length
3692 field for a GPE register set is larger than the 64-bit GAS structure can
3693 accommodate. GPE register sets can be larger than the 255-bit width
3694 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3696 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3697 return from this interface. Handles a possible timeout case if
3698 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3699 "forever". Jung-uk Kim.
3701 Predefined name support: Add allowed/required argument type information
3703 the master predefined info table. This change adds the infrastructure to
3704 enable typechecking on incoming arguments for all predefined
3705 methods/objects. It does not actually contain the code that will fully
3706 utilize this information, this is still under development. Also condenses
3707 some duplicate code for the predefined names into a new module,
3708 utilities/utpredef.c
3710 Example Code and Data Size: These are the sizes for the OS-independent
3711 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3712 debug version of the code includes the debug output trace mechanism and
3713 has a much larger code and data size.
3716 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3717 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3719 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3720 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3723 2) iASL Compiler/Disassembler and Tools:
3725 iASL: Implemented a new option to simplify the development of ACPI-
3727 BIOS code. Adds support for a new "offset table" output file. The -so
3728 option will create a C table containing the AML table offsets of various
3729 named objects in the namespace so that BIOS code can modify them easily
3731 boot time. This can simplify BIOS runtime code by eliminating expensive
3732 searches for "magic values", enhancing boot times and adding greater
3733 reliability. With assistance from Lee Hamel.
3735 iASL: Allow additional predefined names to return zero-length packages.
3736 Now, all predefined names that are defined by the ACPI specification to
3737 return a "variable-length package of packages" are allowed to return a
3738 zero length top-level package. This allows the BIOS to tell the host that
3739 the requested feature is not supported, and supports existing BIOS/ASL
3742 iASL: Changed the "result not used" warning to an error. This is the case
3743 where an ASL operator is effectively a NOOP because the result of the
3744 operation is not stored anywhere. For example:
3746 There is no target (missing 3rd argument), nor is the function return
3747 value used. This is potentially a very serious problem -- since the code
3748 was probably intended to do something, but for whatever reason, the value
3749 was not stored. Therefore, this issue has been upgraded from a warning to
3752 AcpiHelp: Added allowable/required argument types to the predefined names
3753 info display. This feature utilizes the recent update to the predefined
3754 names table (above).
3756 ----------------------------------------
3757 14 February 2013. Summary of changes for version 20130214:
3759 1) ACPICA Kernel-resident Subsystem:
3761 Fixed a possible regression on some hosts: Reinstated the safe return
3762 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3763 evaluated only once. Although these macros are not needed for the ACPICA
3764 code itself, they are often used by ACPI-related host device drivers
3766 the safe feature may be necessary.
3768 Fixed several issues related to the ACPI 5.0 reduced hardware support
3769 (SOC): Now ensure that if the platform declares itself as hardware-
3771 via the FADT, the following functions become NOOPs (and always return
3772 AE_OK) because ACPI is always enabled by definition on these machines:
3778 Dynamic Object Repair: Implemented additional runtime repairs for
3779 predefined name return values. Both of these repairs can simplify code in
3780 the related device drivers that invoke these methods:
3781 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3782 string to a Unicode buffer.
3783 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3785 lone end tag descriptor in the following cases: A Return(0) was executed,
3786 a null buffer was returned, or no object at all was returned (non-slack
3787 mode only). Adds a new file, nsconvert.c
3788 ACPICA BZ 998. Bob Moore, Lv Zheng.
3790 Resource Manager: Added additional code to prevent possible infinite
3792 while traversing corrupted or ill-formed resource template buffers. Check
3793 for zero-length resource descriptors in all code that loops through
3794 resource templates (the length field is used to index through the
3795 template). This change also hardens the external AcpiWalkResources and
3796 AcpiWalkResourceBuffer interfaces.
3798 Local Cache Manager: Enhanced the main data structure to eliminate an
3799 unnecessary mechanism to access the next object in the list. Actually
3800 provides a small performance enhancement for hosts that use the local
3801 ACPICA cache manager. Jung-uk Kim.
3803 Example Code and Data Size: These are the sizes for the OS-independent
3804 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3805 debug version of the code includes the debug output trace mechanism and
3806 has a much larger code and data size.
3809 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3810 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3812 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3813 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3816 2) iASL Compiler/Disassembler and Tools:
3818 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3819 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3820 that were made to the ACPI 5.0 specification.
3822 iASL/Disassembler: Added full support for the following new ACPI tables:
3823 1) The MTMR table (MID Timer Table)
3824 2) The VRTC table (Virtual Real Time Clock Table).
3825 Includes header file, disassembler, table compiler, and template support
3828 iASL: Implemented compile-time validation of package objects returned by
3829 predefined names. This new feature validates static package objects
3830 returned by the various predefined names defined to return packages. Both
3831 object types and package lengths are validated, for both parent packages
3832 and sub-packages, if any. The code is similar in structure and behavior
3834 the runtime repair mechanism within the AML interpreter and uses the
3835 existing predefined name information table. Adds a new file, aslprepkg.c.
3838 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3839 This feature detects a binary file with a valid ACPI table header and
3840 invokes the disassembler automatically. Eliminates the need to
3841 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3843 iASL/Disassembler: Added several warnings for the case where there are
3844 unresolved control methods during the disassembly. This can potentially
3845 cause errors when the output file is compiled, because the disassembler
3846 assumes zero method arguments in these cases (it cannot determine the
3847 actual number of arguments without resolution/definition of the method).
3849 Debugger: Added support to display all resources with a single command.
3850 Invocation of the resources command with no arguments will now display
3852 resources within the current namespace.
3854 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3857 ----------------------------------------
3858 17 January 2013. Summary of changes for version 20130117:
3860 1) ACPICA Kernel-resident Subsystem:
3862 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3863 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3864 objects to return a package containing one integer, most BIOS code
3866 two integers and the previous code reflects that. However, we also need
3868 support BIOS code that actually implements to the ACPI spec, and this
3869 change reflects this.
3871 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3872 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3873 C compilers that require this support.
3874 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3875 ACPI_DEBUG is already used by many of the various hosts.
3877 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3878 copyright to all module headers and signons, including the standard Linux
3879 header. This affects virtually every file in the ACPICA core subsystem,
3880 iASL compiler, all ACPICA utilities, and the test suites.
3882 Example Code and Data Size: These are the sizes for the OS-independent
3883 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3884 debug version of the code includes the debug output trace mechanism and
3885 has a much larger code and data size.
3888 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3889 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3891 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3892 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3895 2) iASL Compiler/Disassembler and Tools:
3897 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3898 prevent a possible fault on some hosts. Some C libraries modify the arg
3899 pointer parameter to vfprintf making it difficult to call it twice in the
3900 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
3901 does not affect the Windows OSL since the Win C library does not modify
3902 the arg pointer. Chao Guan, Bob Moore.
3904 iASL: Fixed a possible infinite loop when the maximum error count is
3905 reached. If an output file other than the .AML file is specified (such as
3906 a listing file), and the maximum number of errors is reached, do not
3907 attempt to flush data to the output file(s) as the compiler is aborting.
3908 This can cause an infinite loop as the max error count code essentially
3909 keeps calling itself.
3911 iASL/Disassembler: Added an option (-in) to ignore NOOP
3913 Implemented for both the compiler and the disassembler. Often, the NOOP
3914 opcode is used as padding for packages that are changed dynamically by
3916 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
3917 errors. This option causes the disassembler to ignore all NOOP opcodes
3918 (0xA3), and it also causes the compiler to ignore all ASL source code
3922 Debugger: Enhanced the Sleep command to execute all sleep states. This
3923 change allows Sleep to be invoked with no arguments and causes the
3924 debugger to execute all of the sleep states, 0-5, automatically.
3926 ----------------------------------------
3927 20 December 2012. Summary of changes for version 20121220:
3929 1) ACPICA Kernel-resident Subsystem:
3931 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
3932 alternate entry point for AcpiWalkResources and improves the usability of
3933 the resource manager by accepting as input a buffer containing the output
3934 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
3935 input buffer is not deleted by this interface so that it can be used by
3936 the host later. See the ACPICA reference for details.
3938 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
3939 (DSDT version < 2). The constant will be truncated and this warning
3940 reflects that behavior.
3942 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
3943 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
3944 both get and set the new wake bit in these descriptors, separately from
3945 the existing share bit. Reported by Aaron Lu.
3947 Interpreter: Fix Store() when an implicit conversion is not possible. For
3948 example, in the cases such as a store of a string to an existing package
3949 object, implement the store as a CopyObject(). This is a small departure
3950 from the ACPI specification which states that the control method should
3952 aborted in this case. However, the ASLTS suite depends on this behavior.
3954 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
3955 macros: check if debug output is currently enabled as soon as possible to
3956 minimize performance impact if debug is in fact not enabled.
3958 Source code restructuring: Cleanup to improve modularity. The following
3959 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
3960 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
3961 Associated makefiles and project files have been updated.
3963 Changed an exception code for LoadTable operator. For the case where one
3964 of the input strings is too long, change the returned exception code from
3965 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
3967 Fixed a possible memory leak in dispatcher error path. On error, delete
3968 the mutex object created during method mutex creation. Reported by
3969 tim.gardner@canonical.com.
3971 Example Code and Data Size: These are the sizes for the OS-independent
3972 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3973 debug version of the code includes the debug output trace mechanism and
3974 has a much larger code and data size.
3977 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3978 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3980 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3981 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3984 2) iASL Compiler/Disassembler and Tools:
3986 iASL: Disallow a method call as argument to the ObjectType ASL operator.
3987 This change tracks an errata to the ACPI 5.0 document. The AML grammar
3988 will not allow the interpreter to differentiate between a method and a
3989 method invocation when these are used as an argument to the ObjectType
3990 operator. The ACPI specification change is to disallow a method
3992 (UserTerm) for the ObjectType operator.
3994 Finish support for the TPM2 and CSRT tables in the headers, table
3995 compiler, and disassembler.
3997 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
3998 always expires immediately if the semaphore is not available. The
4000 code was using a relative-time timeout, but sem_timedwait requires the
4002 of an absolute time.
4004 iASL: Added a remark if the Timer() operator is used within a 32-bit
4005 table. This operator returns a 64-bit time value that will be truncated
4006 within a 32-bit table.
4008 iASL Source code restructuring: Cleanup to improve modularity. The
4009 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
4010 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
4014 ----------------------------------------
4015 14 November 2012. Summary of changes for version 20121114:
4017 1) ACPICA Kernel-resident Subsystem:
4019 Implemented a performance enhancement for ACPI/AML Package objects. This
4020 change greatly increases the performance of Package objects within the
4021 interpreter. It changes the processing of reference counts for packages
4023 optimizing for the most common case where the package sub-objects are
4024 either Integers, Strings, or Buffers. Increases the overall performance
4026 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
4028 Chao Guan. ACPICA BZ 943.
4030 Implemented and deployed common macros to extract flag bits from resource
4031 descriptors. Improves readability and maintainability of the code. Fixes
4033 problem with the UART serial bus descriptor for the number of data bits
4034 flags (was incorrectly 2 bits, should be 3).
4036 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
4037 of the macros and changed the SETx macros to the style of (destination,
4038 source). Also added ACPI_CASTx companion macros. Lv Zheng.
4040 Example Code and Data Size: These are the sizes for the OS-independent
4041 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4042 debug version of the code includes the debug output trace mechanism and
4043 has a much larger code and data size.
4046 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4047 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4049 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4050 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4053 2) iASL Compiler/Disassembler and Tools:
4055 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
4056 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
4057 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
4059 Disassembler: Fixed a problem with external declaration generation. Fixes
4060 a problem where an incorrect pathname could be generated for an external
4061 declaration if the original reference to the object includes leading
4062 carats (^). ACPICA BZ 984.
4064 Debugger: Completed a major update for the Disassemble<method> command.
4065 This command was out-of-date and did not properly disassemble control
4066 methods that had any reasonable complexity. This fix brings the command
4068 to the same level as the rest of the disassembler. Adds one new file,
4069 dmdeferred.c, which is existing code that is now common with the main
4070 disassembler and the debugger disassemble command. ACPICA MZ 978.
4072 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
4073 Newer versions of Bison emit this prototype, so moved the prototype out
4075 the iASL header to where it is actually used in order to avoid a
4079 iASL/Tools: Standardized use of the stream I/O functions:
4080 1) Ensure check for I/O error after every fopen/fread/fwrite
4081 2) Ensure proper order of size/count arguments for fread/fwrite
4082 3) Use test of (Actual != Requested) after all fwrite, and most fread
4083 4) Standardize I/O error messages
4084 Improves reliability and maintainability of the code. Bob Moore, Lv
4088 Disassembler: Prevent duplicate External() statements. During generation
4089 of external statements, detect similar pathnames that are actually
4090 duplicates such as these:
4093 Remove all leading '\' characters from pathnames during the external
4094 statement generation so that duplicates will be detected and tossed.
4097 Tools: Replace low-level I/O with stream I/O functions. Replace
4098 open/read/write/close with the stream I/O equivalents
4099 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
4102 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
4103 name header so that AcpiXtract recognizes the output file/table.
4105 iASL: Remove obsolete -2 option flag. Originally intended to force the
4106 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
4107 and the entire concept is now obsolete.
4109 ----------------------------------------
4110 18 October 2012. Summary of changes for version 20121018:
4113 1) ACPICA Kernel-resident Subsystem:
4115 Updated support for the ACPI 5.0 MPST table. Fixes some problems
4116 introduced by late changes to the table as it was added to the ACPI 5.0
4117 specification. Includes header, disassembler, and data table compiler
4118 support as well as a new version of the MPST template.
4120 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
4121 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
4122 methods: _HID, _CID, and _UID.
4124 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
4125 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
4126 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
4127 names for their various drivers. Affects the AcpiGetObjectInfo external
4128 interface, and other internal interfaces as well.
4130 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
4131 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
4132 on machines that support non-aligned transfers. Optimizes for this case
4133 rather than using a strncpy. With assistance from Zheng Lv.
4135 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
4136 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
4138 Added a new debug print message for AML mutex objects that are force-
4139 released. At control method termination, any currently acquired mutex
4140 objects are force-released. Adds a new debug-only message for each one
4143 Audited/updated all ACPICA return macros and the function debug depth
4144 counter: 1) Ensure that all functions that use the various TRACE macros
4145 also use the appropriate ACPICA return macros. 2) Ensure that all normal
4146 return statements surround the return expression (value) with parens to
4147 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
4148 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
4150 Global source code changes/maintenance: All extra lines at the start and
4151 end of each source file have been removed for consistency. Also, within
4152 comments, all new sentences start with a single space instead of a double
4153 space, again for consistency across the code base.
4155 Example Code and Data Size: These are the sizes for the OS-independent
4156 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4157 debug version of the code includes the debug output trace mechanism and
4158 has a much larger code and data size.
4161 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4162 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4164 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4165 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4168 2) iASL Compiler/Disassembler and Tools:
4170 AcpiExec: Improved the algorithm used for memory leak/corruption
4171 detection. Added some intelligence to the code that maintains the global
4172 list of allocated memory. The list is now ordered by allocated memory
4173 address, significantly improving performance. When running AcpiExec on
4174 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
4175 on the platform and/or the environment. Note, this performance
4176 enhancement affects the AcpiExec utility only, not the kernel-resident
4179 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
4180 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
4181 incorrect table offset reported for invalid opcodes. Report the original
4182 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
4184 Disassembler: Enhanced the -vt option to emit the binary table data in
4185 hex format to assist with debugging.
4187 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
4188 size of file structure. Colin Ian King.
4190 ----------------------------------------
4191 13 September 2012. Summary of changes for version 20120913:
4194 1) ACPICA Kernel-resident Subsystem:
4196 ACPI 5.0: Added two new notify types for the Hardware Error Notification
4197 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
4201 Table Manager: Merged/removed duplicate code in the root table resize
4202 functions. One function is external, the other is internal. Lv Zheng,
4206 Makefiles: Completely removed the obsolete "Linux" makefiles under
4207 acpica/generate/linux. These makefiles are obsolete and have been
4210 the generic unix makefiles under acpica/generate/unix.
4212 Makefiles: Ensure that binary files always copied properly. Minor rule
4214 to ensure that the final binary output files are always copied up to the
4215 appropriate binary directory (bin32 or bin64.)
4217 Example Code and Data Size: These are the sizes for the OS-independent
4218 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4220 version of the code includes the debug output trace mechanism and has a
4222 larger code and data size.
4225 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4226 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4228 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4229 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4232 2) iASL Compiler/Disassembler and Tools:
4234 Disassembler: Fixed a possible fault during the disassembly of resource
4235 descriptors when a second parse is required because of the invocation of
4236 external control methods within the table. With assistance from
4237 adq@lidskialf.net. ACPICA BZ 976.
4239 iASL: Fixed a namepath optimization problem. An error can occur if the
4241 node that contains the namepath to be optimized does not have a parent
4243 that is a named object. This change fixes the problem.
4245 iASL: Fixed a regression where the AML file is not deleted on errors. The
4247 output file should be deleted if there are any errors during the
4250 only exception is if the -f (force output) option is used. ACPICA BZ 974.
4252 iASL: Added a feature to automatically increase internal line buffer
4254 Via realloc(), automatically increase the internal line buffer sizes as
4255 necessary to support very long source code lines. The current version of
4257 preprocessor requires a buffer long enough to contain full source code
4259 This change increases the line buffer(s) if the input lines go beyond the
4260 current buffer size. This eliminates errors that occurred when a source
4262 line was longer than the buffer.
4264 iASL: Fixed a problem with constant folding in method declarations. The
4265 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
4267 Type3 opcode was used.
4269 Debugger: Improved command help support. For incorrect argument count,
4271 full help for the command. For help command itself, allow an argument to
4274 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
4275 errors during execution of the suite. Guan Chao.
4277 ----------------------------------------
4278 16 August 2012. Summary of changes for version 20120816:
4281 1) ACPICA Kernel-resident Subsystem:
4283 Removed all use of the deprecated _GTS and _BFS predefined methods. The
4285 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
4286 deprecated and will probably be removed from the ACPI specification.
4288 does not invoke them, and reportedly never will. The final nail in the
4290 is that the ACPI specification states that these methods must be run with
4291 interrupts off, which is not going to happen in a kernel interpreter.
4293 Linux has removed all use of the methods also. It was discovered that
4294 invoking these functions caused failures on some machines, probably
4296 they were never tested since Windows does not call them. Affects two
4298 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
4301 Implemented support for complex bit-packed buffers returned from the _PLD
4302 (Physical Location of Device) predefined method. Adds a new external
4303 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
4305 structure. Note: C Bitfields cannot be used for this type of predefined
4306 structure since the memory layout of individual bitfields is not defined
4308 the C language. In addition, there are endian concerns where a compiler
4310 change the bitfield ordering based on the machine type. The new ACPICA
4311 interface eliminates these issues, and should be called after _PLD is
4312 executed. ACPICA BZ 954.
4314 Implemented a change to allow a scope change to root (via "Scope (\)")
4316 execution of module-level ASL code (code that is executed at table load
4319 Added the Windows8/Server2012 string for the _OSI method. This change
4322 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
4325 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
4327 and CSRT (Core System Resource Table).
4329 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
4330 names. This simplifies access to the buffers returned by these predefined
4331 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
4333 GPE support: Removed an extraneous parameter from the various low-level
4334 internal GPE functions. Tang Feng.
4336 Removed the linux makefiles from the unix packages. The generate/linux
4337 makefiles are obsolete and have been removed from the unix tarball
4339 packages. The replacement makefiles are under generate/unix, and there is
4341 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
4343 Updates for Unix makefiles:
4344 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
4345 2) Update linker flags (move to end of command line) for AcpiExec
4349 Split ACPICA initialization functions to new file, utxfinit.c. Split from
4350 utxface.c to improve modularity and reduce file size.
4352 Example Code and Data Size: These are the sizes for the OS-independent
4353 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4354 debug version of the code includes the debug output trace mechanism and
4356 much larger code and data size.
4359 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4360 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4362 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4363 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4366 2) iASL Compiler/Disassembler and Tools:
4368 iASL: Fixed a problem with constant folding for fixed-length constant
4369 expressions. The constant-folding code was not being invoked for constant
4370 expressions that allow the use of type 3/4/5 opcodes to generate
4372 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
4374 in the generation of invalid AML bytecode. ACPICA BZ 970.
4376 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
4377 apparently automatically emit some of the necessary externals. This
4379 handles these versions in order to eliminate generation warnings.
4381 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
4383 Disassembler: Add support to decode _PLD buffers. The decoded buffer
4385 within comments in the output file.
4387 Debugger: Fixed a regression with the "Threads" command where
4388 AE_BAD_PARAMETER was always returned.
4390 ----------------------------------------
4391 11 July 2012. Summary of changes for version 20120711:
4393 1) ACPICA Kernel-resident Subsystem:
4395 Fixed a possible fault in the return package object repair code. Fixes a
4396 problem that can occur when a lone package object is wrapped with an
4398 package object in order to force conformance to the ACPI specification.
4400 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4404 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4405 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4406 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4408 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4410 Intel and other vendors. (for Intel: ICH4-M and earlier)
4412 This change removes the code to disable/enable bus master arbitration
4414 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4416 resume problems on some machines. The change has been in use for over
4420 Implemented two new external interfaces to support host-directed dynamic
4422 table load and unload. They are intended to simplify the host
4424 of hot-plug support:
4425 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4426 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4428 See the ACPICA reference for additional details. Adds one new file,
4429 components/tables/tbxfload.c
4431 Implemented and deployed two new interfaces for errors and warnings that
4433 known to be caused by BIOS/firmware issues:
4434 AcpiBiosError: Prints "ACPI Firmware Error" message.
4435 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4436 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4438 and FADT errors. Additional deployment to be completed as appropriate in
4440 future. The associated conditional macros are ACPI_BIOS_ERROR and
4441 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
4446 Implicit notify support: ensure that no memory allocation occurs within a
4447 critical region. This fix moves a memory allocation outside of the time
4449 spinlock is held. Fixes issues on systems that do not allow this
4453 Split exception code utilities and tables into a new file,
4456 Example Code and Data Size: These are the sizes for the OS-independent
4457 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4459 version of the code includes the debug output trace mechanism and has a
4461 larger code and data size.
4464 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4465 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4467 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4468 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4471 2) iASL Compiler/Disassembler and Tools:
4473 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
4477 Debugger: Enhanced the "tables" command to emit additional information
4479 the current set of ACPI tables, including the owner ID and flags decode.
4481 Debugger: Reimplemented the "unload" command to use the new
4482 AcpiUnloadParentTable external interface. This command was disable
4484 due to need for an unload interface.
4486 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
4488 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
4490 ----------------------------------------
4491 20 June 2012. Summary of changes for version 20120620:
4494 1) ACPICA Kernel-resident Subsystem:
4496 Implemented support to expand the "implicit notify" feature to allow
4498 devices to be notified by a single GPE. This feature automatically
4500 runtime device notification in the absence of a BIOS-provided GPE control
4501 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
4503 provided by ACPICA for Windows compatibility, and is a workaround for
4506 code errors. See the description of the AcpiSetupGpeForWake interface in
4508 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
4510 Changed some comments and internal function names to simplify and ensure
4511 correctness of the Linux code translation. No functional changes.
4513 Example Code and Data Size: These are the sizes for the OS-independent
4514 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4516 version of the code includes the debug output trace mechanism and has a
4518 larger code and data size.
4521 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4522 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4524 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4525 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4528 2) iASL Compiler/Disassembler and Tools:
4530 Disassembler: Added support to emit short, commented descriptions for the
4532 predefined names in order to improve the readability of the disassembled
4533 output. ACPICA BZ 959. Changes include:
4534 1) Emit descriptions for all standard predefined names (_INI, _STA,
4537 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
4538 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
4541 AcpiSrc: Fixed several long-standing Linux code translation issues.
4543 descriptions in function headers are now translated properly to lower
4546 underscores. ACPICA BZ 961. Also fixes translation problems such as
4552 local_fADT -> local_FADT
4553 execute_oSI -> execute_OSI
4555 iASL: Fixed a problem where null bytes were inadvertently emitted into
4559 iASL: Added the existing debug options to the standard help screen. There
4561 no longer two different help screens. ACPICA BZ 957.
4563 AcpiHelp: Fixed some typos in the various predefined name descriptions.
4565 expand some of the descriptions where appropriate.
4567 iASL: Fixed the -ot option (display compile times/statistics). Was not
4569 properly for standard output; only worked for the debug file case.
4571 ----------------------------------------
4572 18 May 2012. Summary of changes for version 20120518:
4575 1) ACPICA Core Subsystem:
4577 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
4579 to block until asynchronous events such as notifies and GPEs have
4581 Within ACPICA, it is only called before a notify or GPE handler is
4582 removed/uninstalled. It also may be useful for the host OS within related
4583 drivers such as the Embedded Controller driver. See the ACPICA reference
4585 additional information. ACPICA BZ 868.
4587 ACPI Tables: Added a new error message for a possible overflow failure
4589 the conversion of FADT 32-bit legacy register addresses to internal
4592 bit GAS structure representation. The GAS has a one-byte "bit length"
4594 thus limiting the register length to 255 bits. ACPICA BZ 953.
4596 Example Code and Data Size: These are the sizes for the OS-independent
4597 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4599 version of the code includes the debug output trace mechanism and has a
4601 larger code and data size.
4604 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4605 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4607 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4608 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4611 2) iASL Compiler/Disassembler and Tools:
4613 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
4615 This keyword was added late in the ACPI 5.0 release cycle and was not
4616 implemented until now.
4618 Disassembler: Added support for Operation Region externals. Adds missing
4619 support for operation regions that are defined in another table, and
4620 referenced locally via a Field or BankField ASL operator. Now generates
4622 correct External statement.
4624 Disassembler: Several additional fixes for the External() statement
4626 related to some ASL operators. Also, order the External() statements
4627 alphabetically in the disassembler output. Fixes the External()
4630 the Create* field, Alias, and Scope operators:
4631 1) Create* buffer field operators - fix type mismatch warning on
4633 2) Alias - implement missing External support
4634 3) Scope - fix to make sure all necessary externals are emitted.
4636 iASL: Improved pathname support. For include files, merge the prefix
4638 with the file pathname and eliminate unnecessary components. Convert
4639 backslashes in all pathnames to forward slashes, for readability. Include
4641 pathname changes affect both #include and Include() type operators.
4643 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4645 of a valid line by inserting a newline and then returning the EOF during
4647 next call to GetNextLine. Prevents the line from being ignored due to EOF
4650 iASL: Implemented some changes to enhance the IDE support (-vi option.)
4652 and Warning messages are now correctly recognized for both the source
4654 browser and the global error and warning counts.
4656 ----------------------------------------
4657 20 April 2012. Summary of changes for version 20120420:
4660 1) ACPICA Core Subsystem:
4662 Implemented support for multiple notify handlers. This change adds
4665 allow multiple system and device notify handlers on Device, Thermal Zone,
4667 Processor objects. This can simplify the host OS notification
4669 Also re-worked and restructured the entire notify support code to
4671 handler installation, handler removal, notify event queuing, and notify
4672 dispatch to handler(s). Note: there can still only be two global notify
4673 handlers - one for system notifies and one for device notifies. There are
4675 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4676 Moore, Rafael Wysocki.
4678 Fixed a regression in the package repair code where the object reference
4679 count was calculated incorrectly. Regression was introduced in the commit
4680 "Support to add Package wrappers".
4682 Fixed a couple possible memory leaks in the AML parser, in the error
4684 path. Jesper Juhl, Lin Ming.
4686 Example Code and Data Size: These are the sizes for the OS-independent
4687 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4688 debug version of the code includes the debug output trace mechanism and
4690 much larger code and data size.
4693 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4694 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4696 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4697 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4700 2) iASL Compiler/Disassembler and Tools:
4702 iASL: Fixed a problem with the resource descriptor support where the
4704 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4705 included in cumulative descriptor offset, resulting in incorrect values
4707 resource tags within resource descriptors appearing after a
4709 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4711 iASL and Preprocessor: Implemented full support for the #line directive
4713 correctly track original source file line numbers through the .i
4715 output file - for error and warning messages.
4717 iASL: Expand the allowable byte constants for address space IDs.
4719 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4720 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4722 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4724 iASL: Add option to completely disable the preprocessor (-Pn).
4726 iASL: Now emit all error/warning messages to standard error (stderr) by
4727 default (instead of the previous stdout).
4729 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4731 for resource descriptor offset fix above. Update/cleanup error output
4732 routines. Enable and send iASL errors/warnings to an error logfile
4733 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4735 several extraneous "unrecognized operator" messages.
4737 ----------------------------------------
4738 20 March 2012. Summary of changes for version 20120320:
4741 1) ACPICA Core Subsystem:
4743 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4744 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4746 does not execute these methods, and therefore these methods are often
4747 untested. It has been seen on some systems where the execution of these
4748 methods causes errors and also prevents the machine from entering S5. It
4750 therefore suggested that host operating systems do not execute these
4752 by default. In the future, perhaps these methods can be optionally
4754 based on the age of the system and/or what is the newest version of
4756 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4758 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4761 Fixed a problem where the length of the local/common FADT was set too
4763 The local FADT table length cannot be set to the common length until the
4764 original length has been examined. There is code that checks the table
4766 and sets various fields appropriately. This can affect older machines
4768 early FADT versions. For example, this can cause inadvertent writes to
4770 CST_CNT register. Julian Anastasov.
4772 Fixed a mapping issue related to a physical table override. Use the
4774 mapping mechanism for tables loaded via the physical override OSL
4776 This allows for early mapping before the virtual memory manager is
4778 Thomas Renninger, Bob Moore.
4780 Enhanced the automatic return-object repair code: Repair a common problem
4782 predefined methods that are defined to return a variable-length Package
4784 sub-objects. If there is only one sub-object, some BIOS ASL code
4786 simply returns the single object instead of a Package with one sub-
4788 This new support will repair this error by wrapping a Package object
4790 the original object, creating the correct and expected Package with one
4792 object. Names that can be repaired in this manner include: _ALR, _CSD,
4794 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4797 Changed the exception code returned for invalid ACPI paths passed as
4798 parameters to external interfaces such as AcpiEvaluateObject. Was
4799 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
4801 Example Code and Data Size: These are the sizes for the OS-independent
4802 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4804 version of the code includes the debug output trace mechanism and has a
4806 larger code and data size.
4809 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4810 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4812 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4813 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4816 2) iASL Compiler/Disassembler and Tools:
4818 iASL: Added the infrastructure and initial implementation of a integrated
4820 like preprocessor. This will simplify BIOS development process by
4822 the need for a separate preprocessing step during builds. On Windows, it
4824 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4825 features including full #define() macro support are still under
4827 These preprocessor directives are supported:
4840 In addition, these new command line options are supported:
4841 -D <symbol> Define symbol for preprocessor use
4842 -li Create preprocessed output file (*.i)
4843 -P Preprocess only and create preprocessor output file (*.i)
4845 Table Compiler: Fixed a problem where the equals operator within an
4847 did not work properly.
4849 Updated iASL to use the current versions of Bison/Flex. Updated the
4851 project file to invoke these tools from the standard location. ACPICA BZ
4854 Flex for Windows: V2.5.4
4855 Bison for Windows: V2.4.1
4857 ----------------------------------------
4858 15 February 2012. Summary of changes for version 20120215:
4861 1) ACPICA Core Subsystem:
4863 There have been some major changes to the sleep/wake support code, as
4864 described below (a - e).
4866 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4867 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4868 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4870 time the _BFS method is called and the _WAK method is called. NOTE: all
4872 must update their wake/resume code or else sleep/wake will not work
4876 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4878 method. Some machines require that the GPEs are enabled before the _WAK
4880 is executed. Thomas Renninger.
4882 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4884 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4886 determine whether the system is rebooting or resuming. Matthew Garrett.
4888 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4890 match the ACPI specification requirement. Rafael Wysocki.
4892 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4893 registers within the V5 FADT. This support adds two new files:
4894 hardware/hwesleep.c implements the support for the new registers. Moved
4896 sleep/wake external interfaces to hardware/hwxfsleep.c.
4899 Added a new OSL interface for ACPI table overrides,
4900 AcpiOsPhysicalTableOverride. This interface allows the host to override a
4901 table via a physical address, instead of the logical address required by
4902 AcpiOsTableOverride. This simplifies the host implementation. Initial
4903 implementation by Thomas Renninger. The ACPICA implementation creates a
4905 shared function for table overrides that attempts both a logical and a
4908 Expanded the OSL memory read/write interfaces to 64-bit data
4909 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
4910 transfer support for GAS register structures passed to AcpiRead and
4913 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
4915 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
4917 See the ACPICA reference for details. ACPICA BZ 942. This option removes
4919 10% of the code and 5% of the static data, and the following hardware
4921 features become unavailable:
4922 PM Event and Control registers
4923 SCI interrupt (and handler)
4925 General Purpose Events (GPEs)
4928 FACS table (Waking vectors and Global Lock)
4930 Updated the unix tarball directory structure to match the ACPICA git
4932 tree. This ensures that the generic unix makefiles work properly (in
4933 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
4936 Updated the return value of the _REV predefined method to integer value 5
4938 reflect ACPI 5.0 support.
4940 Moved the external ACPI PM timer interface prototypes to the public
4942 file where they belong.
4944 Example Code and Data Size: These are the sizes for the OS-independent
4945 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4947 version of the code includes the debug output trace mechanism and has a
4949 larger code and data size.
4952 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4953 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4955 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4956 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4959 2) iASL Compiler/Disassembler and Tools:
4961 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
4962 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
4963 incorrectly displayed.
4965 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
4968 ----------------------------------------
4969 11 January 2012. Summary of changes for version 20120111:
4972 1) ACPICA Core Subsystem:
4974 Implemented a new mechanism to allow host device drivers to check for
4976 range conflicts with ACPI Operation Regions. Both SystemMemory and
4978 address spaces are supported. A new external interface,
4979 AcpiCheckAddressRange,
4980 allows drivers to check an address range against the ACPI namespace. See
4982 ACPICA reference for additional details. Adds one new file,
4983 utilities/utaddress.c. Lin Ming, Bob Moore.
4985 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
4988 Status registers, update the ACPI 5.0 flags, and update internal data
4989 structures to handle an FADT larger than 256 bytes. The size of the ACPI
4993 Updated all ACPICA copyrights and signons to 2012. Added the 2012
4995 all module headers and signons, including the standard Linux header. This
4996 affects virtually every file in the ACPICA core subsystem, iASL compiler,
4998 all ACPICA utilities.
5000 Example Code and Data Size: These are the sizes for the OS-independent
5001 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5003 version of the code includes the debug output trace mechanism and has a
5005 larger code and data size.
5008 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5009 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5011 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
5012 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
5015 2) iASL Compiler/Disassembler and Tools:
5017 Disassembler: fixed a problem with the automatic resource tag generation
5018 support. Fixes a problem where the resource tags are inadvertently not
5019 constructed if the table being disassembled contains external references
5021 control methods. Moved the actual construction of the tags to after the
5023 namespace is constructed (after 2nd parse is invoked due to external
5025 method references.) ACPICA BZ 941.
5027 Table Compiler: Make all "generic" operators caseless. These are the
5029 like UINT8, String, etc. Making these caseless improves ease-of-use.
5033 ----------------------------------------
5034 23 November 2011. Summary of changes for version 20111123:
5036 0) ACPI 5.0 Support:
5038 This release contains full support for the ACPI 5.0 specification, as
5041 Reduced Hardware Support:
5042 -------------------------
5044 This support allows for ACPI systems without the usual ACPI hardware.
5046 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
5048 not attempt to initialize or use any of the usual ACPI hardware. Note,
5050 this flag is set, all of the following ACPI hardware is assumed to be not
5051 present and is not initialized or accessed:
5053 General Purpose Events (GPEs)
5054 Fixed Events (PM1a/PM1b and PM Control)
5055 Power Management Timer and Console Buttons (power/sleep)
5056 Real-time Clock Alarm
5058 System Control Interrupt (SCI)
5059 The FACS is assumed to be non-existent
5064 All new tables and updates to existing tables are fully supported in the
5065 ACPICA headers (for use by device drivers), the disassembler, and the
5067 Data Table Compiler. ACPI 5.0 defines these new tables:
5069 BGRT /* Boot Graphics Resource Table */
5070 DRTM /* Dynamic Root of Trust for Measurement table */
5071 FPDT /* Firmware Performance Data Table */
5072 GTDT /* Generic Timer Description Table */
5073 MPST /* Memory Power State Table */
5074 PCCT /* Platform Communications Channel Table */
5075 PMTT /* Platform Memory Topology Table */
5076 RASF /* RAS Feature table */
5078 Operation Regions/SpaceIDs:
5079 ---------------------------
5081 All new operation regions are fully supported by the iASL compiler, the
5082 disassembler, and the ACPICA runtime code (for dispatch to region
5084 The new operation region Space IDs are:
5089 Resource Descriptors:
5090 ---------------------
5092 All new ASL resource descriptors are fully supported by the iASL
5095 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
5097 all new predefined resource tags). New descriptors are:
5106 ASL/AML Operators, New and Modified:
5107 ------------------------------------
5109 One new operator is added, the Connection operator, which is used to
5111 a GeneralPurposeIo or GenericSerialBus resource descriptor with
5113 field objects within an operation region. Several new protocols are
5115 with the AccessAs operator. All are fully supported by the iASL compiler,
5116 disassembler, and runtime ACPICA AML interpreter:
5118 Connection // Declare Field Connection
5120 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
5121 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
5123 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
5124 RawDataBuffer // Data type for Vendor Data
5127 Predefined ASL/AML Objects:
5128 ---------------------------
5130 All new predefined objects/control-methods are supported by the iASL
5132 and the ACPICA runtime validation/repair (arguments and return values.)
5134 predefined names include the following:
5136 Standard Predefined Names (Objects or Control Methods):
5137 _AEI, _CLS, _CPC, _CWS, _DEP,
5138 _DLM, _EVT, _GCP, _CRT, _GWS,
5139 _HRV, _PRE, _PSE, _SRT, _SUB.
5141 Resource Tags (Names used to access individual fields within resource
5143 _DBT, _DPL, _DRS, _END, _FLC,
5144 _IOR, _LIN, _MOD, _PAR, _PHA,
5145 _PIN, _PPI, _POL, _RXL, _SLV,
5146 _SPE, _STB, _TXL, _VEN.
5148 ACPICA External Interfaces:
5149 ---------------------------
5151 Several new interfaces have been defined for use by ACPI-related device
5152 drivers and other host OS services:
5154 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
5156 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
5157 provided by the BIOS. They are intended to be used in conjunction with
5159 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
5160 mutual exclusion with the AML code/interpreter.
5162 AcpiGetEventResources: Returns the (formatted) resource descriptors as
5164 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
5166 resource descriptors associated with hardware-reduced platform events,
5168 to the AcpiGetCurrentResources interface.
5170 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
5171 operation regions, information about the Connection() object and any
5173 length information is passed to the region handler within the Context
5176 AcpiBufferToResource: This interface converts a raw AML buffer containing
5178 resource template or resource descriptor to the ACPI_RESOURCE internal
5180 suitable for use by device drivers. Can be used by an operation region
5182 to convert the Connection() buffer object into a ACPI_RESOURCE.
5184 Miscellaneous/Tools/TestSuites:
5185 -------------------------------
5187 Support for extended _HID names (Four alpha characters instead of three).
5188 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
5189 Support for ACPI 5.0 features in the ASLTS test suite.
5190 Fully updated documentation (ACPICA and iASL reference documents.)
5192 ACPI Table Definition Language:
5193 -------------------------------
5195 Support for this language was implemented and released as a subsystem of
5197 iASL compiler in 2010. (See the iASL compiler User Guide.)
5200 Non-ACPI 5.0 changes for this release:
5201 --------------------------------------
5203 1) ACPICA Core Subsystem:
5205 Fix a problem with operation region declarations where a failure can
5208 the region name and an argument that evaluates to an object (such as the
5209 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
5212 Do not abort an ACPI table load if an invalid space ID is found within.
5214 will be caught later if the offending method is executed. ACPICA BZ 925.
5216 Fixed an issue with the FFixedHW space ID where the ID was not always
5217 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
5219 Fixed a problem with the 32-bit generation of the unix-specific OSL
5220 (osunixxf.c). Lin Ming, ACPICA BZ 936.
5222 Several changes made to enable generation with the GCC 4.6 compiler.
5226 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
5228 field registers out-of-range.
5230 2) iASL Compiler/Disassembler and Tools:
5232 iASL: Implemented the __PATH__ operator, which returns the full pathname
5234 the current source file.
5236 AcpiHelp: Automatically display expanded keyword information for all ASL
5239 Debugger: Add "Template" command to disassemble/dump resource template
5242 Added a new master script to generate and execute the ASLTS test suite.
5243 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
5245 iASL: Fix problem with listing generation during processing of the
5247 operator where AML listing was disabled until the entire Switch block was
5250 iASL: Improve support for semicolon statement terminators. Fix "invalid
5251 character" message for some cases when the semicolon is used. Semicolons
5253 now allowed after every <Term> grammar element. ACPICA BZ 927.
5255 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
5258 Disassembler: Fix problem with disassembly of the DataTableRegion
5260 where an inadvertent "Unhandled deferred opcode" message could be
5263 3) Example Code and Data Size
5265 These are the sizes for the OS-independent acpica.lib produced by the
5266 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5267 includes the debug output trace mechanism and has a much larger code and
5272 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5273 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5275 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5276 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5278 ----------------------------------------
5279 22 September 2011. Summary of changes for version 20110922:
5283 Support for ACPI 5.0 in ACPICA has been underway for several months and
5285 be released at the same time that ACPI 5.0 is officially released.
5287 The ACPI 5.0 specification is on track for release in the next few
5290 1) ACPICA Core Subsystem:
5292 Fixed a problem where the maximum sleep time for the Sleep() operator was
5293 intended to be limited to two seconds, but was inadvertently limited to
5297 Linux and Unix makefiles: Added header file dependencies to ensure
5299 generation of ACPICA core code and utilities. Also simplified the
5301 considerably through the use of the vpath variable to specify search
5305 2) iASL Compiler/Disassembler and Tools:
5307 iASL: Implemented support to check the access length for all fields
5309 access named Resource Descriptor fields. For example, if a resource field
5311 defined to be two bits, a warning is issued if a CreateXxxxField() is
5313 with an incorrect bit length. This is implemented for all current
5315 descriptor names. ACPICA BZ 930.
5317 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
5321 iASL: Fixed a couple of issues associated with variable-length package
5322 objects. 1) properly handle constants like One, Ones, Zero -- do not make
5324 VAR_PACKAGE when these are used as a package length. 2) Allow the
5326 opcode (in addition to PACKAGE) when validating object types for
5330 iASL: Emit statistics for all output files (instead of just the ASL input
5332 AML output). Includes listings, hex files, etc.
5334 iASL: Added -G option to the table compiler to allow the compilation of
5336 ACPI tables. The only part of a table that is required is the standard
5341 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
5343 which also adds correct 64-bit support. Also, now all output filenames
5345 completely lower case.
5347 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
5348 loading table files. A warning is issued for any such tables. The only
5349 exception is an FADT. This also fixes a possible fault when attempting to
5351 non-AML tables. ACPICA BZ 932.
5353 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
5355 missing table terminator could cause a fault when using the -p option.
5357 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
5360 3) Example Code and Data Size
5362 These are the sizes for the OS-independent acpica.lib produced by the
5363 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5364 includes the debug output trace mechanism and has a much larger code and
5368 Previous Release (VC 9.0):
5369 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5370 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5371 Current Release (VC 9.0):
5372 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5373 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5376 ----------------------------------------
5377 23 June 2011. Summary of changes for version 20110623:
5379 1) ACPI CA Core Subsystem:
5381 Updated the predefined name repair mechanism to not attempt repair of a
5383 return object if a _PSS object is present. We can only sort the _TSS
5385 package if there is no _PSS within the same scope. This is because if
5388 present, the ACPI specification dictates that the _TSS Power Dissipation
5390 is to be ignored, and therefore some BIOSs leave garbage values in the
5392 Power field(s). In this case, it is best to just return the _TSS package
5394 is. Reported by, and fixed with assistance from Fenghua Yu.
5396 Added an option to globally disable the control method return value
5398 and repair. This runtime option can be used to disable return value
5401 this is causing a problem on a particular machine. Also added an option
5403 AcpiExec (-dr) to set this disable flag.
5405 All makefiles and project files: Major changes to improve generation of
5407 tools. ACPICA BZ 912:
5408 Reduce default optimization levels to improve compatibility
5409 For Linux, add strict-aliasing=0 for gcc 4
5410 Cleanup and simplify use of command line defines
5411 Cleanup multithread library support
5412 Improve usage messages
5414 Linux-specific header: update handling of THREAD_ID and pthread. For the
5416 bit case, improve casting to eliminate possible warnings, especially with
5420 Example Code and Data Size: These are the sizes for the OS-independent
5421 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5423 version of the code includes the debug output trace mechanism and has a
5425 larger code and data size.
5427 Previous Release (VC 9.0):
5428 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5429 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5430 Current Release (VC 9.0):
5431 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5432 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5434 2) iASL Compiler/Disassembler and Tools:
5436 With this release, a new utility named "acpihelp" has been added to the
5438 package. This utility summarizes the ACPI specification chapters for the
5440 and AML languages. It generates under Linux/Unix as well as Windows, and
5441 provides the following functionality:
5442 Find/display ASL operator(s) -- with description and syntax.
5443 Find/display ASL keyword(s) -- with exact spelling and descriptions.
5444 Find/display ACPI predefined name(s) -- with description, number
5445 of arguments, and the return value data type.
5446 Find/display AML opcode name(s) -- with opcode, arguments, and
5448 Decode/display AML opcode -- with opcode name, arguments, and
5451 Service Layers: Make multi-thread support configurable. Conditionally
5453 the multi-thread support so that threading libraries will not be linked
5456 necessary. The only tool that requires multi-thread support is AcpiExec.
5458 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
5460 Bison appear to want the interface to yyerror to be a const char * (or at
5461 least this is a problem when generating iASL on some systems.) ACPICA BZ
5465 Tools: Fix for systems where O_BINARY is not defined. Only used for
5467 versions of the tools.
5469 ----------------------------------------
5470 27 May 2011. Summary of changes for version 20110527:
5472 1) ACPI CA Core Subsystem:
5474 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
5476 signature. Now, only allow SSDT, OEMx, and a null signature. History:
5477 1) Originally, we checked the table signature for "SSDT" or "PSDT".
5478 (PSDT is now obsolete.)
5479 2) We added support for OEMx tables, signature "OEM" plus a fourth
5480 "don't care" character.
5481 3) Valid tables were encountered with a null signature, so we just
5482 gave up on validating the signature, (05/2008).
5483 4) We encountered non-AML tables such as the MADT, which caused
5484 interpreter errors and kernel faults. So now, we once again allow
5485 only SSDT, OEMx, and now, also a null signature. (05/2011).
5487 Added the missing _TDL predefined name to the global name list in order
5489 enable validation. Affects both the core ACPICA code and the iASL
5492 Example Code and Data Size: These are the sizes for the OS-independent
5493 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5495 version of the code includes the debug output trace mechanism and has a
5497 larger code and data size.
5499 Previous Release (VC 9.0):
5500 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5501 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5502 Current Release (VC 9.0):
5503 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5504 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5506 2) iASL Compiler/Disassembler and Tools:
5508 Debugger/AcpiExec: Implemented support for "complex" method arguments on
5510 debugger command line. This adds support beyond simple integers --
5512 Strings, Buffers, and Packages. Includes support for nested packages.
5513 Increased the default command line buffer size to accommodate these
5515 See the ACPICA reference for details and syntax. ACPICA BZ 917.
5517 Debugger/AcpiExec: Implemented support for "default" method arguments for
5519 Execute/Debug command. Now, the debugger will always invoke a control
5521 with the required number of arguments -- even if the command line
5523 none or insufficient arguments. It uses default integer values for any
5525 arguments. Also fixes a bug where only six method arguments maximum were
5526 supported instead of the required seven.
5528 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
5530 also return status in order to prevent buffer overruns. See the ACPICA
5531 reference for details and syntax. ACPICA BZ 921
5533 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
5534 makefiles to simplify support for the two different but similar parser
5535 generators, bison and yacc.
5537 Updated the generic unix makefile for gcc 4. The default gcc version is
5539 expected to be 4 or greater, since options specific to gcc 4 are used.
5541 ----------------------------------------
5542 13 April 2011. Summary of changes for version 20110413:
5544 1) ACPI CA Core Subsystem:
5546 Implemented support to execute a so-called "orphan" _REG method under the
5548 device. This change will force the execution of a _REG method underneath
5551 device even if there is no corresponding operation region of type
5552 EmbeddedControl. Fixes a problem seen on some machines and apparently is
5553 compatible with Windows behavior. ACPICA BZ 875.
5555 Added more predefined methods that are eligible for automatic NULL
5557 element removal. This change adds another group of predefined names to
5560 of names that can be repaired by having NULL package elements dynamically
5561 removed. This group are those methods that return a single variable-
5563 package containing simple data types such as integers, buffers, strings.
5565 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
5568 and _TZD. ACPICA BZ 914.
5570 Split and segregated all internal global lock functions to a new file,
5573 Updated internal address SpaceID for DataTable regions. Moved this
5576 id in preparation for ACPI 5.0 changes that will include some new space
5579 change should not affect user/host code.
5581 Example Code and Data Size: These are the sizes for the OS-independent
5583 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5585 the code includes the debug output trace mechanism and has a much larger
5590 Previous Release (VC 9.0):
5591 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5592 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5593 Current Release (VC 9.0):
5594 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5595 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5597 2) iASL Compiler/Disassembler and Tools:
5599 iASL/DTC: Major update for new grammar features. Allow generic data types
5601 custom ACPI tables. Field names are now optional. Any line can be split
5603 multiple lines using the continuation char (\). Large buffers now use
5605 continuation character(s) and no colon on the continuation lines. See the
5607 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
5610 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
5612 Since the parser stuffs a "zero" as the return value for these statements
5615 the underlying AML grammar), they were seen as "return with value" by the
5617 semantic checking. They are now seen correctly as "null" return
5620 iASL: Check if a_REG declaration has a corresponding Operation Region.
5622 check for each _REG to ensure that there is in fact a corresponding
5624 region declaration in the same scope. If not, the _REG method is not very
5626 since it probably won't be executed. ACPICA BZ 915.
5628 iASL/DTC: Finish support for expression evaluation. Added a new
5631 that implements c-style operator precedence and parenthesization. ACPICA
5635 Disassembler/DTC: Remove support for () and <> style comments in data
5638 that DTC has full expression support, we don't want to have comment
5641 start with a parentheses or a less-than symbol. Now, only the standard /*
5644 comments are supported, as well as the bracket [] comments.
5646 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
5648 headers in the acpidump file. Update the header validation to support
5650 tables. Problem introduced in previous AcpiXtract version in the change
5652 support "wrong checksum" error messages emitted by acpidump utility.
5654 iASL: Add a * option to generate all template files (as a synonym for
5658 "iasl -T *" or "iasl -T ALL".
5660 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5662 abort the compiler on "fatal" errors, simply should abort the current
5664 This allows multiple compiles with a single (possibly wildcard) compiler
5667 ----------------------------------------
5668 16 March 2011. Summary of changes for version 20110316:
5670 1) ACPI CA Core Subsystem:
5672 Fixed a problem caused by a _PRW method appearing at the namespace root
5674 during the setup of wake GPEs. A fault could occur if a _PRW directly
5677 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5679 Implemented support for "spurious" Global Lock interrupts. On some
5681 global lock interrupt can occur without the pending flag being set. Upon
5684 interrupt, we now ensure that a thread is actually waiting for the lock
5686 signaling GL availability. Rafael Wysocki, Bob Moore.
5688 Example Code and Data Size: These are the sizes for the OS-independent
5690 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5692 the code includes the debug output trace mechanism and has a much larger
5697 Previous Release (VC 9.0):
5698 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5699 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5700 Current Release (VC 9.0):
5701 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5702 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5704 2) iASL Compiler/Disassembler and Tools:
5706 Implemented full support for the "SLIC" ACPI table. Includes support in
5708 header files, disassembler, table compiler, and template generator. Bob
5712 AcpiXtract: Correctly handle embedded comments and messages from
5714 Apparently some or all versions of acpidump will occasionally emit a
5717 "Wrong checksum", etc., into the dump file. This was causing problems for
5718 AcpiXtract. ACPICA BZ 905.
5720 iASL: Fix the Linux makefile by removing an inadvertent double file
5724 AcpiExec: Update installation of operation region handlers. Install one
5726 for a user-defined address space. This is used by the ASL test suite
5729 ----------------------------------------
5730 11 February 2011. Summary of changes for version 20110211:
5732 1) ACPI CA Core Subsystem:
5734 Added a mechanism to defer _REG methods for some early-installed
5736 Most user handlers should be installed before call to
5737 AcpiEnableSubsystem.
5738 However, Event handlers and region handlers should be installed after
5739 AcpiInitializeObjects. Override handlers for the "default" regions should
5741 installed early, however. This change executes all _REG methods for the
5742 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5743 chicken/egg issues between them. ACPICA BZ 848.
5745 Implemented an optimization for GPE detection. This optimization will
5747 ignore GPE registers that contain no enabled GPEs -- there is no need to
5748 read the register since this information is available internally. This
5749 becomes more important on machines with a large GPE space. ACPICA
5751 884. Lin Ming. Suggestion from Joe Liu.
5753 Removed all use of the highly unreliable FADT revision field. The
5755 number in the FADT has been found to be completely unreliable and cannot
5757 trusted. Only the actual table length can be used to infer the version.
5759 change updates the ACPICA core and the disassembler so that both no
5761 even look at the FADT version and instead depend solely upon the FADT
5764 Fix an unresolved name issue for the no-debug and no-error-message source
5765 generation cases. The _AcpiModuleName was left undefined in these cases,
5767 it is actually needed as a parameter to some interfaces. Define
5768 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5770 Split several large files (makefiles and project files updated)
5771 utglobal.c -> utdecode.c
5772 dbcomds.c -> dbmethod.c dbnames.c
5773 dsopcode.c -> dsargs.c dscontrol.c
5774 dsload.c -> dsload2.c
5775 aslanalyze.c -> aslbtypes.c aslwalks.c
5777 Example Code and Data Size: These are the sizes for the OS-independent
5778 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5779 debug version of the code includes the debug output trace mechanism and
5781 a much larger code and data size.
5783 Previous Release (VC 9.0):
5784 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5785 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5786 Current Release (VC 9.0):
5787 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5788 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5790 2) iASL Compiler/Disassembler and Tools:
5792 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5793 These are useful C-style macros with the standard definitions. ACPICA
5796 iASL/DTC: Added support for integer expressions and labels. Support for
5798 expressions for all integer fields in all ACPI tables. Support for labels
5800 "generic" portions of tables such as UEFI. See the iASL reference manual.
5802 Debugger: Added a command to display the status of global handlers. The
5803 "handlers" command will display op region, fixed event, and miscellaneous
5804 global handlers. installation status -- and for op regions, whether
5806 or user-installed handler will be used.
5808 iASL: Warn if reserved method incorrectly returns a value. Many
5810 names are defined such that they do not return a value. If implemented as
5812 method, issue a warning if such a name explicitly returns a value. ACPICA
5815 iASL: Added detection of GPE method name conflicts. Detects a conflict
5817 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5819 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5821 iASL/DTC: Fixed a couple input scanner issues with comments and line
5822 numbers. Comment remover could get confused and miss a comment ending.
5824 a problem with line counter maintenance.
5826 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5828 no need to abort on simple errors within a field definition.
5830 Debugger: Simplified the output of the help command. All help output now
5832 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5834 ----------------------------------------
5835 12 January 2011. Summary of changes for version 20110112:
5837 1) ACPI CA Core Subsystem:
5839 Fixed a race condition between method execution and namespace walks that
5841 possibly cause a fault. The problem was apparently introduced in version
5842 20100528 as a result of a performance optimization that reduces the
5845 namespace walks upon method exit by using the delete_namespace_subtree
5846 function instead of the delete_namespace_by_owner function used
5848 Bug is a missing namespace lock in the delete_namespace_subtree function.
5849 dana.myers@oracle.com
5851 Fixed several issues and a possible fault with the automatic "serialized"
5852 method support. History: This support changes a method to "serialized" on
5854 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5855 possibility that it cannot handle reentrancy. This fix repairs a couple
5857 issues seen in the field, especially on machines with many cores:
5859 1) Delete method children only upon the exit of the last thread,
5860 so as to not delete objects out from under other running threads
5861 (and possibly causing a fault.)
5862 2) Set the "serialized" bit for the method only upon the exit of the
5863 Last thread, so as to not cause deadlock when running threads
5865 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5866 so that there is no longer any confusion between the two.
5868 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5870 Debugger: Now lock the namespace for duration of a namespace dump.
5872 issues if the namespace is changing dynamically underneath the debugger.
5873 Especially affects temporary namespace nodes, since the debugger displays
5876 Updated the ordering of include files. The ACPICA headers should appear
5877 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5879 any necessary compiler-specific defines, etc. Affects the ACPI-related
5883 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5885 to all module headers and signons, including the Linux header. This
5887 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5890 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5891 project files for VC++ 6.0 are now obsolete. New project files can be
5893 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5896 Example Code and Data Size: These are the sizes for the OS-independent
5897 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5898 debug version of the code includes the debug output trace mechanism and
5900 much larger code and data size.
5902 Previous Release (VC 6.0):
5903 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5904 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5905 Current Release (VC 9.0):
5906 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5907 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5909 2) iASL Compiler/Disassembler and Tools:
5911 iASL: Added generic data types to the Data Table compiler. Add "generic"
5913 types such as UINT32, String, Unicode, etc., to simplify the generation
5915 platform-defined tables such as UEFI. Lin Ming.
5917 iASL: Added listing support for the Data Table Compiler. Adds listing
5919 (-l) to display actual binary output for each line of input code.
5921 ----------------------------------------
5922 09 December 2010. Summary of changes for version 20101209:
5924 1) ACPI CA Core Subsystem:
5926 Completed the major overhaul of the GPE support code that was begun in
5928 2010. Major features include: removal of _PRW execution in ACPICA (host
5929 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
5930 changes to existing interfaces, simplification of GPE handler operation,
5932 a handful of new interfaces:
5938 One new file, evxfgpe.c to consolidate all external GPE interfaces.
5940 See the ACPICA Programmer Reference for full details and programming
5941 information. See the new section 4.4 "General Purpose Event (GPE)
5943 for a full overview, and section 8.7 "ACPI General Purpose Event
5945 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
5947 Bob Moore, Rafael Wysocki.
5949 Implemented a new GPE feature for Windows compatibility, the "Implicit
5951 GPE Notify". This feature will automatically issue a Notify(2) on a
5953 when a Wake GPE is received if there is no corresponding GPE method or
5954 handler. ACPICA BZ 870.
5956 Fixed a problem with the Scope() operator during table parse and load
5958 During load phase (table load or method execution), the scope operator
5960 not enter the target into the namespace. Instead, it should open a new
5962 at the target location. Linux BZ 19462, ACPICA BZ 882.
5964 Example Code and Data Size: These are the sizes for the OS-independent
5965 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5966 debug version of the code includes the debug output trace mechanism and
5968 much larger code and data size.
5971 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5972 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5974 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5975 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5977 2) iASL Compiler/Disassembler and Tools:
5979 iASL: Relax the alphanumeric restriction on _CID strings. These strings
5981 "bus-specific" per the ACPI specification, and therefore any characters
5983 acceptable. The only checks that can be performed are for a null string
5985 perhaps for a leading asterisk. ACPICA BZ 886.
5987 iASL: Fixed a problem where a syntax error that caused a premature EOF
5988 condition on the source file emitted a very confusing error message. The
5989 premature EOF is now detected correctly. ACPICA BZ 891.
5991 Disassembler: Decode the AccessSize within a Generic Address Structure
5993 access, word access, etc.) Note, this field does not allow arbitrary bit
5994 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
5996 New: AcpiNames utility - Example namespace dump utility. Shows an example
5998 ACPICA configuration for a minimal namespace dump utility. Uses table and
5999 namespace managers, but no AML interpreter. Does not add any
6001 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
6002 partition and configure ACPICA. ACPICA BZ 883.
6004 AML Debugger: Increased the debugger buffer size for method return
6006 Was 4K, increased to 16K. Also enhanced error messages for debugger
6008 execution, including the buffer overflow case.
6010 ----------------------------------------
6011 13 October 2010. Summary of changes for version 20101013:
6013 1) ACPI CA Core Subsystem:
6015 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
6017 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
6018 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
6020 Changed the type of the predefined namespace object _TZ from ThermalZone
6022 Device. This was found to be confusing to the host software that
6024 the various thermal zones, since _TZ is not really a ThermalZone.
6027 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
6030 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
6031 string is "Windows 2006 SP2".
6033 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
6035 code automatically repairs _HID-related strings, this type of code is no
6036 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
6039 Example Code and Data Size: These are the sizes for the OS-independent
6040 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6041 debug version of the code includes the debug output trace mechanism and
6043 much larger code and data size.
6046 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6047 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6049 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6050 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6052 2) iASL Compiler/Disassembler and Tools:
6054 iASL: Implemented additional compile-time validation for _HID strings.
6056 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
6059 the string must be exactly seven or eight characters. For both _HID and
6061 strings, all characters must be alphanumeric. ACPICA BZ 874.
6063 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
6064 descriptors that are mostly or all zeros, with the expectation that they
6066 be filled in at runtime. iASL now allows this as long as there is a
6068 tag" (name) associated with the descriptor, which gives the ASL a handle
6069 needed to modify the descriptor. ACPICA BZ 873.
6071 Added single-thread support to the generic Unix application OSL.
6073 for iASL support, this change removes the use of semaphores in the
6075 threaded ACPICA tools/applications - increasing performance. The
6076 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
6077 option. ACPICA BZ 879.
6079 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
6081 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
6083 iASL: Moved all compiler messages to a new file, aslmessages.h.
6085 ----------------------------------------
6086 15 September 2010. Summary of changes for version 20100915:
6088 1) ACPI CA Core Subsystem:
6090 Removed the AcpiOsDerivePciId OSL interface. The various host
6092 of this function were not OS-dependent and are now obsolete and can be
6093 removed from all host OSLs. This function has been replaced by
6094 AcpiHwDerivePciId, which is now part of the ACPICA core code.
6095 AcpiHwDerivePciId has been implemented without recursion. Adds one new
6096 module, hwpci.c. ACPICA BZ 857.
6098 Implemented a dynamic repair for _HID and _CID strings. The following
6099 problems are now repaired at runtime: 1) Remove a leading asterisk in the
6100 string, and 2) the entire string is uppercased. Both repairs are in
6101 accordance with the ACPI specification and will simplify host driver
6105 The ACPI_THREAD_ID type is no longer configurable, internally it is now
6106 always UINT64. This simplifies the ACPICA code, especially any printf
6108 UINT64 is the only common data type for all thread_id types across all
6109 operating systems. It is now up to the host OSL to cast the native
6111 type to UINT64 before returning the value to ACPICA (via
6113 Lin Ming, Bob Moore.
6115 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
6117 keyword is not standard across compilers, and this type allows inline to
6119 configured on a per-compiler basis. Lin Ming.
6121 Made the system global AcpiGbl_SystemAwakeAndRunning publically
6123 Added an extern for this boolean in acpixf.h. Some hosts utilize this
6125 during suspend/restore operations. ACPICA BZ 869.
6127 All code that implements error/warning messages with the "ACPI:" prefix
6129 been moved to a new module, utxferror.c.
6131 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
6133 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
6135 Example Code and Data Size: These are the sizes for the OS-independent
6136 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6137 debug version of the code includes the debug output trace mechanism and
6139 much larger code and data size.
6142 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6143 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6145 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6146 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6148 2) iASL Compiler/Disassembler and Tools:
6150 iASL/Disassembler: Write ACPI errors to stderr instead of the output
6152 This keeps the output files free of random error messages that may
6154 from within the namespace/interpreter code. Used this opportunity to
6156 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
6157 866. Lin Ming, Bob Moore.
6159 Tools: update some printfs for ansi warnings on size_t. Handle width
6161 of size_t on 32-bit versus 64-bit generations. Lin Ming.
6163 ----------------------------------------
6164 06 August 2010. Summary of changes for version 20100806:
6166 1) ACPI CA Core Subsystem:
6168 Designed and implemented a new host interface to the _OSI support code.
6170 will allow the host to dynamically add or remove multiple _OSI strings,
6172 well as install an optional handler that is called for each _OSI
6174 Also added a new AML debugger command, 'osi' to display and modify the
6176 _OSI string table, and test support in the AcpiExec utility. See the
6178 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
6180 AcpiInstallInterface - Add an _OSI string.
6181 AcpiRemoveInterface - Delete an _OSI string.
6182 AcpiInstallInterfaceHandler - Install optional _OSI handler.
6184 AcpiOsValidateInterface - no longer used.
6186 source/components/utilities/utosi.c
6188 Re-introduced the support to enable multi-byte transfers for Embedded
6189 Controller (EC) operation regions. A reported problem was found to be a
6191 in the host OS, not in the multi-byte support. Previously, the maximum
6193 size passed to the EC operation region handler was a single byte. There
6195 often EC Fields larger than one byte that need to be transferred, and it
6197 useful for the EC driver to lock these as a single transaction. This
6199 enables single transfers larger than 8 bits. This effectively changes the
6200 access to the EC space from ByteAcc to AnyAcc, and will probably require
6201 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
6203 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
6205 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
6206 prototype in acpiosxf.h had the output value pointer as a (void *).
6207 It should be a (UINT64 *). This may affect some host OSL code.
6209 Fixed a couple problems with the recently modified Linux makefiles for
6211 and AcpiExec. These new makefiles place the generated object files in the
6212 local directory so that there can be no collisions between the files that
6214 shared between them that are compiled with different options.
6216 Example Code and Data Size: These are the sizes for the OS-independent
6217 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6218 debug version of the code includes the debug output trace mechanism and
6220 much larger code and data size.
6223 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6224 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6226 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6227 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6229 2) iASL Compiler/Disassembler and Tools:
6231 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
6233 namespace from and disassemble an entire group of AML files. Useful for
6234 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
6236 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
6238 iASL: Allow multiple invocations of -e option. This change allows
6240 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
6244 ----------------------------------------
6245 02 July 2010. Summary of changes for version 20100702:
6247 1) ACPI CA Core Subsystem:
6249 Implemented several updates to the recently added GPE reference count
6250 support. The model for "wake" GPEs is changing to give the host OS
6252 control of these GPEs. Eventually, the ACPICA core will not execute any
6254 methods, since the host already must execute them. Also, additional
6256 were made to help ensure that the reference counts are kept in proper
6257 synchronization with reality. Rafael J. Wysocki.
6259 1) Ensure that GPEs are not enabled twice during initialization.
6260 2) Ensure that GPE enable masks stay in sync with the reference count.
6261 3) Do not inadvertently enable GPEs when writing GPE registers.
6262 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
6263 interface. This interface will set or clear individual GPEs for wakeup.
6264 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
6266 are now used for "runtime" GPEs only.
6268 Changed the behavior of the GPE install/remove handler interfaces. The
6271 no longer disabled during this process, as it was found to cause problems
6273 some machines. Rafael J. Wysocki.
6275 Reverted a change introduced in version 20100528 to enable Embedded
6276 Controller multi-byte transfers. This change was found to cause problems
6278 Index Fields and possibly Bank Fields. It will be reintroduced when these
6279 problems have been resolved.
6281 Fixed a problem with references to Alias objects within Package Objects.
6283 reference to an Alias within the definition of a Package was not always
6284 resolved properly. Aliases to objects like Processors, Thermal zones,
6286 were resolved to the actual object instead of a reference to the object
6289 should be. Package objects are only allowed to contain integer, string,
6290 buffer, package, and reference objects. Redhat bugzilla 608648.
6292 Example Code and Data Size: These are the sizes for the OS-independent
6293 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6294 debug version of the code includes the debug output trace mechanism and
6296 much larger code and data size.
6299 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6300 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6302 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6303 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6305 2) iASL Compiler/Disassembler and Tools:
6307 iASL: Implemented a new compiler subsystem to allow definition and
6308 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
6310 are called "ACPI Data Tables", and the new compiler is the "Data Table
6311 Compiler". This compiler is intended to simplify the existing error-prone
6312 process of creating these tables for the BIOS, as well as allowing the
6313 disassembly, modification, recompilation, and override of existing ACPI
6315 tables. See the iASL User Guide for detailed information.
6317 iASL: Implemented a new Template Generator option in support of the new
6319 Table Compiler. This option will create examples of all known ACPI tables
6320 that can be used as the basis for table development. See the iASL
6321 documentation and the -T option.
6323 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
6326 Updated the Linux makefiles for iASL and AcpiExec to place the generated
6327 object files in the local directory so that there can be no collisions
6328 between the shared files between them that are generated with different
6331 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
6333 the #define __APPLE__ to enable this support.
6335 ----------------------------------------
6336 28 May 2010. Summary of changes for version 20100528:
6338 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
6339 available at www.acpi.info. This is primarily an errata release.
6341 1) ACPI CA Core Subsystem:
6343 Undefined ACPI tables: We are looking for the definitions for the
6345 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
6347 Implemented support to enable multi-byte transfers for Embedded
6349 (EC) operation regions. Previously, the maximum data size passed to the
6351 operation region handler was a single byte. There are often EC Fields
6353 than one byte that need to be transferred, and it is useful for the EC
6355 to lock these as a single transaction. This change enables single
6357 larger than 8 bits. This effectively changes the access to the EC space
6359 ByteAcc to AnyAcc, and will probably require changes to the host OS
6361 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
6363 transfers. Alexey Starikovskiy, Lin Ming
6365 Implemented a performance enhancement for namespace search and access.
6367 change enhances the performance of namespace searches and walks by adding
6369 backpointer to the parent in each namespace node. On large namespaces,
6371 change can improve overall ACPI performance by up to 9X. Adding a pointer
6373 each namespace node increases the overall size of the internal namespace
6375 about 5%, since each namespace entry usually consists of both a namespace
6376 node and an ACPI operand object. However, this is the first growth of the
6377 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
6379 Implemented a performance optimization that reduces the number of
6381 walks. On control method exit, only walk the namespace if the method is
6383 to have created namespace objects outside of its local scope. Previously,
6385 entire namespace was traversed on each control method exit. This change
6387 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
6390 Added support to truncate I/O addresses to 16 bits for Windows
6392 Some ASL code has been seen in the field that inadvertently has bits set
6393 above bit 15. This feature is optional and is enabled if the BIOS
6395 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6398 Added support to limit the maximum time for the ASL Sleep() operator. To
6399 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6400 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6403 Added run-time validation support for the _WDG and_WED Microsoft
6405 methods. These objects are defined by "Windows Instrumentation", and are
6407 part of the ACPI spec. ACPICA BZ 860.
6409 Expanded all statistic counters used during namespace and device
6410 initialization from 16 to 32 bits in order to support very large
6413 Replaced all instances of %d in printf format specifiers with %u since
6415 all integers in ACPICA are unsigned.
6417 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
6421 Example Code and Data Size: These are the sizes for the OS-independent
6422 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6423 debug version of the code includes the debug output trace mechanism and
6425 much larger code and data size.
6428 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6429 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6431 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6432 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6434 2) iASL Compiler/Disassembler and Tools:
6436 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6437 methods. These objects are defined by "Windows Instrumentation", and are
6439 part of the ACPI spec. ACPICA BZ 860.
6441 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6442 option will disable the tracking mechanism, which improves performance
6445 AcpiExec: Restructured the command line options into -d (disable) and -e
6448 ----------------------------------------
6449 28 April 2010. Summary of changes for version 20100428:
6451 1) ACPI CA Core Subsystem:
6453 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
6454 including FADT-based and GPE Block Devices, execute any _PRW methods in
6456 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
6457 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
6458 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
6459 Devices. Provides compatibility with other ACPI implementations. Two new
6460 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
6463 Fixed a regression introduced in version 20100331 within the table
6465 where initial table loading could fail. This was introduced in the fix
6467 AcpiReallocateRootTable. Also, renamed some of fields in the table
6469 data structures to clarify their meaning and use.
6471 Fixed a possible allocation overrun during internal object copy in
6472 AcpiUtCopySimpleObject. The original code did not correctly handle the
6474 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
6477 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
6478 possible access beyond end-of-allocation. Also, now fully validate
6480 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
6482 Example Code and Data Size: These are the sizes for the OS-independent
6483 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6484 debug version of the code includes the debug output trace mechanism and
6486 much larger code and data size.
6489 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6490 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6492 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6493 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6495 2) iASL Compiler/Disassembler and Tools:
6497 iASL: Implemented Min/Max/Len/Gran validation for address resource
6498 descriptors. This change implements validation for the address fields
6500 are common to all address-type resource descriptors. These checks are
6501 implemented: Checks for valid Min/Max, length within the Min/Max window,
6502 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
6504 table 6-40 in the ACPI 4.0a specification. Also split the large
6506 and aslrestype2.c files into five new files. ACPICA BZ 840.
6508 iASL: Added support for the _Wxx predefined names. This support was
6510 and these names were not recognized by the compiler as valid predefined
6511 names. ACPICA BZ 851.
6513 iASL: Added an error for all predefined names that are defined to return
6515 value and thus must be implemented as Control Methods. These include all
6517 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
6518 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
6520 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
6522 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
6524 dynamically loaded via the Load() operator. Also cleaned up output for
6527 ta and -tc options. ACPICA BZ 853.
6529 Tests: Added a new file with examples of extended iASL error checking.
6530 Demonstrates the advanced error checking ability of the iASL compiler.
6531 Available at tests/misc/badcode.asl.
6533 ----------------------------------------
6534 31 March 2010. Summary of changes for version 20100331:
6536 1) ACPI CA Core Subsystem:
6538 Completed a major update for the GPE support in order to improve support
6540 shared GPEs and to simplify both host OS and ACPICA code. Added a
6542 count mechanism to support shared GPEs that require multiple device
6544 Several external interfaces have changed. One external interface has been
6545 removed. One new external interface was added. Most of the GPE external
6546 interfaces now use the GPE spinlock instead of the events mutex (and the
6547 Flags parameter for many GPE interfaces has been removed.) See the
6549 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
6551 Wysocki. ACPICA BZ 831.
6554 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
6560 Implemented write support for DataTable operation regions. These regions
6562 defined via the DataTableRegion() operator. Previously, only read support
6564 implemented. The ACPI specification allows DataTableRegions to be
6568 Implemented a new subsystem option to force a copy of the DSDT to local
6569 memory. Optionally copy the entire DSDT to local memory (instead of
6571 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
6573 the original DSDT, creating the need for this option. Default is FALSE,
6577 Implemented detection of a corrupted or replaced DSDT. This change adds
6578 support to detect a DSDT that has been corrupted and/or replaced from
6580 the OS (by firmware). This is typically catastrophic for the system, but
6582 been seen on some machines. Once this problem has been detected, the DSDT
6583 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
6585 Fixed two problems with AcpiReallocateRootTable during the root table
6587 When copying the root table to the new allocation, the length used was
6588 incorrect. The new size was used instead of the current table size,
6590 too much data was copied. Also, the count of available slots for ACPI
6592 was not set correctly. Alexey Starikovskiy, Bob Moore.
6594 Example Code and Data Size: These are the sizes for the OS-independent
6595 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6596 debug version of the code includes the debug output trace mechanism and
6598 much larger code and data size.
6601 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6602 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6604 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6605 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6607 2) iASL Compiler/Disassembler and Tools:
6609 iASL: Implement limited typechecking for values returned from predefined
6610 control methods. The type of any returned static (unnamed) object is now
6611 validated. For example, Return(1). ACPICA BZ 786.
6613 iASL: Fixed a predefined name object verification regression. Fixes a
6615 introduced in version 20100304. An error is incorrectly generated if a
6616 predefined name is declared as a static named object with a value defined
6617 using the keywords "Zero", "One", or "Ones". Lin Ming.
6619 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
6621 reducing the requested registry access rights. ACPICA BZ 842.
6623 Disassembler: fixed a possible fault when generating External()
6625 Introduced in commit ae7d6fd: Properly handle externals with parent-
6627 (carat). Fixes a string length allocation calculation. Lin Ming.
6629 ----------------------------------------
6630 04 March 2010. Summary of changes for version 20100304:
6632 1) ACPI CA Core Subsystem:
6634 Fixed a possible problem with the AML Mutex handling function
6635 AcpiExReleaseMutex where the function could fault under the very rare
6636 condition when the interpreter has blocked, the interpreter lock is
6638 the interpreter is then reentered via the same thread, and attempts to
6639 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6643 Implemented additional configuration support for the AML "Debug Object".
6644 Output from the debug object can now be enabled via a global variable,
6645 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6647 This debug output is now available in the release version of ACPICA
6649 of just the debug version. Also, the entire debug output module can now
6651 configured out of the ACPICA build if desired. One new file added,
6652 executer/exdebug.c. Lin Ming, Bob Moore.
6654 Added header support for the ACPI MCHI table (Management Controller Host
6655 Interface Table). This table was added in ACPI 4.0, but the defining
6657 has only recently become available.
6659 Standardized output of integer values for ACPICA warnings/errors. Always
6661 0x prefix for hex output, always use %u for unsigned integer decimal
6663 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6665 invocations.) These invocations were converted from the original
6666 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6668 Example Code and Data Size: These are the sizes for the OS-independent
6669 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6670 debug version of the code includes the debug output trace mechanism and
6672 much larger code and data size.
6675 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6676 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6678 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6679 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6681 2) iASL Compiler/Disassembler and Tools:
6683 iASL: Implemented typechecking support for static (non-control method)
6684 predefined named objects that are declared with the Name() operator. For
6685 example, the type of this object is now validated to be of type Integer:
6686 Name(_BBN, 1). This change migrates the compiler to using the core
6688 name table instead of maintaining a local version. Added a new file,
6689 aslpredef.c. ACPICA BZ 832.
6691 Disassembler: Added support for the ACPI 4.0 MCHI table.
6693 ----------------------------------------
6694 21 January 2010. Summary of changes for version 20100121:
6696 1) ACPI CA Core Subsystem:
6698 Added the 2010 copyright to all module headers and signons. This affects
6699 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6700 tools/utilities, and the test suites.
6702 Implemented a change to the AcpiGetDevices interface to eliminate
6704 invocations of the _STA method. In the case where a specific _HID is
6705 requested, do not run _STA until a _HID match is found. This eliminates
6706 potentially dozens of _STA calls during a search for a particular
6708 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6710 Implemented an additional repair for predefined method return values.
6712 to repair unexpected NULL elements within returned Package objects.
6715 Integer of value zero, a NULL String, or a zero-length Buffer as
6717 ACPICA BZ 818. Lin Ming, Bob Moore.
6719 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6721 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6723 64-bit AML integers). It is now obsolete and this change removes it from
6725 ACPICA code base, replaced by UINT64. The original typedef has been
6727 for now for compatibility with existing device driver code. ACPICA BZ
6730 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6732 the parse tree object.
6734 Added additional warning options for the gcc-4 generation. Updated the
6736 accordingly. This includes some code restructuring to eliminate
6738 code, elimination of some gotos, elimination of unused return values,
6740 additional casting, and removal of redundant declarations.
6742 Example Code and Data Size: These are the sizes for the OS-independent
6743 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6744 debug version of the code includes the debug output trace mechanism and
6746 much larger code and data size.
6749 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6750 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6752 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6753 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6755 2) iASL Compiler/Disassembler and Tools:
6757 No functional changes for this release.
6759 ----------------------------------------
6760 14 December 2009. Summary of changes for version 20091214:
6762 1) ACPI CA Core Subsystem:
6764 Enhanced automatic data type conversions for predefined name repairs.
6766 change expands the automatic repairs/conversions for predefined name
6768 values to make Integers, Strings, and Buffers fully interchangeable.
6771 Buffer can be converted to a Package of Integers if necessary. The
6773 module was completely restructured. Lin Ming, Bob Moore.
6775 Implemented automatic removal of null package elements during predefined
6777 repairs. This change will automatically remove embedded and trailing NULL
6778 package elements from returned package objects that are defined to
6781 variable number of sub-packages. The driver is then presented with a
6783 with no null elements to deal with. ACPICA BZ 819.
6785 Implemented a repair for the predefined _FDE and _GTM names. The expected
6786 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6788 possible problems (both seen in the field), where a package of integers
6790 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6793 Implemented additional module-level code support. This change will
6795 execute module-level code that is not at the root of the namespace (under
6797 Device object, etc.). Now executes the code within the current scope
6799 of the root. ACPICA BZ 762. Lin Ming.
6801 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6803 problem where mutex errors can occur when running a _REG method that is
6805 the same scope as a method-defined operation region or an operation
6807 under a module-level IF block. This type of code is rare, so the problem
6809 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6811 Fixed a possible memory leak during module-level code execution. An
6813 could be leaked for each block of executed module-level code if the
6814 interpreter slack mode is enabled This change deletes any implicitly
6816 object from the module-level code block. Lin Ming.
6818 Removed messages for successful predefined repair(s). The repair
6820 was considered too wordy. Now, messages are only unconditionally emitted
6822 the return object cannot be repaired. Existing messages for successful
6823 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6826 Example Code and Data Size: These are the sizes for the OS-independent
6827 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6828 debug version of the code includes the debug output trace mechanism and
6830 much larger code and data size.
6833 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6834 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6836 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6837 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6839 2) iASL Compiler/Disassembler and Tools:
6841 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6843 were no longer automatically removed at the termination of the compile.
6845 acpiexec: Implemented the -f option to specify default region fill value.
6846 This option specifies the value used to initialize buffers that simulate
6847 operation regions. Default value is zero. Useful for debugging problems
6849 depend on a specific initial value for a region or field.
6851 ----------------------------------------
6852 12 November 2009. Summary of changes for version 20091112:
6854 1) ACPI CA Core Subsystem:
6856 Implemented a post-order callback to AcpiWalkNamespace. The existing
6857 interface only has a pre-order callback. This change adds an additional
6858 parameter for a post-order callback which will be more useful for bus
6860 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6862 Modified the behavior of the operation region memory mapping cache for
6863 SystemMemory. Ensure that the memory mappings created for operation
6865 do not cross 4K page boundaries. Crossing a page boundary while mapping
6866 regions can cause kernel warnings on some hosts if the pages have
6868 attributes. Such regions are probably BIOS bugs, and this is the
6870 Linux BZ 14445. Lin Ming.
6872 Implemented an automatic repair for predefined methods that must return
6873 sorted lists. This change will repair (by sorting) packages returned by
6875 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6877 and do not contain NULL package elements. Adds one new file,
6878 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6880 Fixed a possible fault during predefined name validation if a return
6882 object contains NULL elements. Also adds a warning if a NULL element is
6883 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6885 include repair or removal of all such NULL elements where possible.
6887 Implemented additional module-level executable AML code support. This
6889 will execute module-level code that is not at the root of the namespace
6890 (under a Device object, etc.) at table load time. Module-level executable
6892 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6894 Implemented a new internal function to create Integer objects. This
6896 simplifies miscellaneous object creation code. ACPICA BZ 823.
6898 Reduced the severity of predefined repair messages, Warning to Info.
6900 the object was successfully repaired, a warning is too severe. Reduced to
6902 info message for now. These messages may eventually be changed to debug-
6906 Example Code and Data Size: These are the sizes for the OS-independent
6907 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6908 debug version of the code includes the debug output trace mechanism and
6910 much larger code and data size.
6913 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6914 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6916 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6917 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6919 2) iASL Compiler/Disassembler and Tools:
6921 iASL: Implemented Switch() with While(1) so that Break works correctly.
6923 change correctly implements the Switch operator with a surrounding
6925 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
6927 iASL: Added a message if a package initializer list is shorter than
6929 length. Adds a new remark for a Package() declaration if an initializer
6931 exists, but is shorter than the declared length of the package. Although
6932 technically legal, this is probably a coding error and it is seen in the
6933 field. ACPICA BZ 815. Lin Ming, Bob Moore.
6935 iASL: Fixed a problem where the compiler could fault after the maximum
6937 of errors was reached (200).
6939 acpixtract: Fixed a possible warning for pointer cast if the compiler
6941 level set very high.
6943 ----------------------------------------
6944 13 October 2009. Summary of changes for version 20091013:
6946 1) ACPI CA Core Subsystem:
6948 Fixed a problem where an Operation Region _REG method could be executed
6950 than once. If a custom address space handler is installed by the host
6952 the "initialize operation regions" phase of the ACPICA initialization,
6954 _REG methods for that address space could be executed twice. This change
6955 fixes the problem. ACPICA BZ 427. Lin Ming.
6957 Fixed a possible memory leak for the Scope() ASL operator. When the exact
6958 invocation of "Scope(\)" is executed (change scope to root), one internal
6959 operand object was leaked. Lin Ming.
6961 Implemented a run-time repair for the _MAT predefined method. If the _MAT
6962 return value is defined as a Field object in the AML, and the field
6963 size is less than or equal to the default width of an integer (32 or
6965 can incorrectly return an Integer instead of a Buffer. ACPICA now
6966 automatically repairs this problem. ACPICA BZ 810.
6968 Implemented a run-time repair for the _BIF and _BIX predefined methods.
6970 "OEM Information" field is often incorrectly returned as an Integer with
6971 value zero if the field is not supported by the platform. This is due to
6973 ambiguity in the ACPI specification. The field should always be a string.
6974 ACPICA now automatically repairs this problem by returning a NULL string
6975 within the returned Package. ACPICA BZ 807.
6977 Example Code and Data Size: These are the sizes for the OS-independent
6978 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6979 debug version of the code includes the debug output trace mechanism and
6981 much larger code and data size.
6984 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6985 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6987 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6988 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6990 2) iASL Compiler/Disassembler and Tools:
6992 Disassembler: Fixed a problem where references to external symbols that
6993 contained one or more parent-prefixes (carats) were not handled
6995 possibly causing a fault. ACPICA BZ 806. Lin Ming.
6997 Disassembler: Restructured the code so that all functions that handle
6998 external symbols are in a single module. One new file is added,
7001 AML Debugger: Added a max count argument for the Batch command (which
7002 executes multiple predefined methods within the namespace.)
7004 iASL: Updated the compiler documentation (User Reference.) Available at
7005 http://www.acpica.org/documentation/. ACPICA BZ 750.
7007 AcpiXtract: Updated for Lint and other formatting changes. Close all open
7010 ----------------------------------------
7011 03 September 2009. Summary of changes for version 20090903:
7013 1) ACPI CA Core Subsystem:
7015 For Windows Vista compatibility, added the automatic execution of an _INI
7016 method located at the namespace root (\_INI). This method is executed at
7017 table load time. This support is in addition to the automatic execution
7019 \_SB._INI. Lin Ming.
7021 Fixed a possible memory leak in the interpreter for AML package objects
7023 the package initializer list is longer than the defined size of the
7025 This apparently can only happen if the BIOS changes the package size on
7027 fly (seen in a _PSS object), as ASL compilers do not allow this. The
7028 interpreter will truncate the package to the defined size (and issue an
7030 message), but previously could leave the extra objects undeleted if they
7032 pre-created during the argument processing (such is the case if the
7034 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
7036 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
7037 This has been reported in the field. Previously, ACPICA would zero out
7039 buffer/string. Now, the operation is treated as a noop. Provides Windows
7040 compatibility. ACPICA BZ 803. Lin Ming.
7042 Removed an extraneous error message for ASL constructs of the form
7043 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
7045 are seen in many BIOSs and are once again treated as NOOPs and no error
7047 emitted when they are encountered. ACPICA BZ 785.
7049 Fixed an extraneous warning message if a _DSM reserved method returns a
7050 Package object. _DSM can return any type of object, so validation on the
7051 return type cannot be performed. ACPICA BZ 802.
7053 Example Code and Data Size: These are the sizes for the OS-independent
7054 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7055 debug version of the code includes the debug output trace mechanism and
7057 much larger code and data size.
7060 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7061 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7063 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7064 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7066 2) iASL Compiler/Disassembler and Tools:
7068 iASL: Fixed a problem with the use of the Alias operator and Resource
7069 Templates. The correct alias is now constructed and no error is emitted.
7072 iASL: Implemented the -I option to specify additional search directories
7074 include files. Allows multiple additional search paths for include files.
7075 Directories are searched in the order specified on the command line
7077 the local directory is searched.) ACPICA BZ 800.
7079 iASL: Fixed a problem where the full pathname for include files was not
7080 emitted for warnings/errors. This caused the IDE support to not work
7081 properly. ACPICA BZ 765.
7083 iASL: Implemented the -@ option to specify a Windows-style response file
7084 containing additional command line options. ACPICA BZ 801.
7086 AcpiExec: Added support to load multiple AML files simultaneously (such
7089 DSDT and multiple SSDTs). Also added support for wildcards within the AML
7090 pathname. These features allow all machine tables to be easily loaded and
7091 debugged together. ACPICA BZ 804.
7093 Disassembler: Added missing support for disassembly of HEST table Error
7097 ----------------------------------------
7098 30 July 2009. Summary of changes for version 20090730:
7100 The ACPI 4.0 implementation for ACPICA is complete with this release.
7102 1) ACPI CA Core Subsystem:
7104 ACPI 4.0: Added header file support for all new and changed ACPI tables.
7105 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
7107 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
7109 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
7111 have been some ACPI 4.0 changes to other existing tables. Split the large
7112 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
7114 ACPI 4.0: Implemented predefined name validation for all new names. There
7116 31 new names in ACPI 4.0. The predefined validation module was split into
7118 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
7120 Implemented support for so-called "module-level executable code". This is
7121 executable AML code that exists outside of any control method and is
7123 to be executed at table load time. Although illegal since ACPI 2.0, this
7125 of code still exists and is apparently still being created. Blocks of
7127 code are now detected and executed as intended. Currently, the code
7129 must exist under either an If, Else, or While construct; these are the
7130 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
7132 Implemented an automatic dynamic repair for predefined names that return
7133 nested Package objects. This applies to predefined names that are defined
7135 return a variable-length Package of sub-packages. If the number of sub-
7136 packages is one, BIOS code is occasionally seen that creates a simple
7138 package with no sub-packages. This code attempts to fix the problem by
7139 wrapping a new package object around the existing package. These methods
7141 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
7145 Fixed a regression introduced in 20090625 for the AcpiGetDevices
7147 The _HID/_CID matching was broken and no longer matched IDs correctly.
7151 Fixed a problem with AcpiReset where the reset would silently fail if the
7152 register was one of the protected I/O ports. AcpiReset now bypasses the
7154 validation mechanism. This may eventually be driven into the
7158 Fixed a regression related to the recent update of the AcpiRead/Write
7159 interfaces. A sleep/suspend could fail if the optional PM2 Control
7161 does not exist during an attempt to write the Bus Master Arbitration bit.
7162 (However, some hosts already delete the code that writes this bit, and
7164 code may in fact be obsolete at this date.) ACPICA BZ 799.
7166 Fixed a problem where AcpiTerminate could fault if inadvertently called
7168 in succession. ACPICA BZ 795.
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: 84.7K Code, 17.8K Data, 102.5K Total
7178 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7180 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7181 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7183 2) iASL Compiler/Disassembler and Tools:
7185 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
7186 changes to existing tables. ACPICA BZ 775.
7188 ----------------------------------------
7189 25 June 2009. Summary of changes for version 20090625:
7191 The ACPI 4.0 Specification was released on June 16 and is available at
7192 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
7193 continue for the next few releases.
7195 1) ACPI CA Core Subsystem:
7197 ACPI 4.0: Implemented interpreter support for the IPMI operation region
7198 address space. Includes support for bi-directional data buffers and an
7200 address space handler (to be installed by an IPMI device driver.) ACPICA
7204 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
7206 support in both the header files and the disassembler.
7208 Completed a major update for the AcpiGetObjectInfo external interface.
7210 - Support for variable, unlimited length HID, UID, and CID strings.
7211 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
7213 - Call the _SxW power methods on behalf of a device object.
7214 - Determine if a device is a PCI root bridge.
7215 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
7216 These changes will require an update to all callers of this interface.
7218 the updated ACPICA Programmer Reference for details. One new source file
7220 been added - utilities/utids.c. ACPICA BZ 368, 780.
7222 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
7223 transfers. The Value parameter has been extended from 32 bits to 64 bits
7225 order to support new ACPI 4.0 tables. These changes will require an
7228 all callers of these interfaces. See the ACPICA Programmer Reference for
7229 details. ACPICA BZ 768.
7231 Fixed several problems with AcpiAttachData. The handler was not invoked
7233 the host node was deleted. The data sub-object was not automatically
7235 when the host node was deleted. The interface to the handler had an
7237 parameter, this was removed. ACPICA BZ 778.
7239 Enhanced the function that dumps ACPI table headers. All non-printable
7240 characters in the string fields are now replaced with '?' (Signature,
7242 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
7243 these fields are occasionally seen in the field. ACPICA BZ 788.
7245 Fixed a problem with predefined method repair code where the code that
7246 attempts to repair/convert an object of incorrect type is only executed
7248 the first time the predefined method is called. The mechanism that
7250 warnings on subsequent calls was interfering with the repair mechanism.
7253 Fixed a possible memory leak in the predefined validation/repair code
7256 buffer is automatically converted to an expected string object.
7258 Removed obsolete 16-bit files from the distribution and from the current
7260 tree head. ACPICA BZ 776.
7262 Example Code and Data Size: These are the sizes for the OS-independent
7263 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7264 debug version of the code includes the debug output trace mechanism and
7266 much larger code and data size.
7269 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7270 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7272 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7273 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7275 2) iASL Compiler/Disassembler and Tools:
7277 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
7278 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
7280 ACPI 4.0: iASL - implemented compile-time validation support for all new
7281 predefined names and control methods (31 total). ACPICA BZ 769.
7283 ----------------------------------------
7284 21 May 2009. Summary of changes for version 20090521:
7286 1) ACPI CA Core Subsystem:
7288 Disabled the preservation of the SCI enable bit in the PM1 control
7290 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
7293 a "preserved" bit - "OSPM always preserves this bit position", section
7294 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
7295 because the bit needs to be explicitly set by the OS as a workaround. No
7296 machines fail if the bit is not preserved. Therefore, ACPICA no longer
7297 attempts to preserve this bit.
7299 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
7300 incorrectly formed _PRT package could cause a fault. Added validation to
7301 ensure that each package element is actually a sub-package.
7303 Implemented a new interface to install or override a single control
7305 AcpiInstallMethod. This interface is useful when debugging in order to
7307 an existing method or to install a missing method without having to
7309 the entire ACPI table. See the ACPICA Programmer Reference for use and
7310 examples. Lin Ming, Bob Moore.
7312 Fixed several reference count issues with the DdbHandle object that is
7313 created from a Load or LoadTable operator. Prevent premature deletion of
7315 object. Also, mark the object as invalid once the table has been
7317 This is needed because the handle itself may not be deleted after the
7319 unload, depending on whether it has been stored in a named object by the
7322 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
7323 mutexes of the same sync level are acquired but then not released in
7325 opposite order, the internally maintained Current Sync Level becomes
7327 and can cause subsequent execution errors. ACPICA BZ 471.
7329 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
7330 specification has been changed to make the SyncLevel for mutex objects
7332 useful. When releasing a mutex, the SyncLevel of the mutex must now be
7334 same as the current sync level. This makes more sense than the previous
7336 (SyncLevel less than or equal). This change updates the code to match the
7339 Fixed a problem with the local version of the AcpiOsPurgeCache function.
7341 (local) cache must be locked during all cache object deletions. Andrew
7344 Updated the Load operator to use operation region interfaces. This
7346 direct memory mapping with region access calls. Now, all region accesses
7348 through the installed region handler as they should.
7350 Simplified and optimized the NsGetNextNode function. Reduced parameter
7352 and reduced code for this frequently used function.
7354 Example Code and Data Size: These are the sizes for the OS-independent
7355 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7356 debug version of the code includes the debug output trace mechanism and
7358 much larger code and data size.
7361 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7362 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7364 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7365 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7367 2) iASL Compiler/Disassembler and Tools:
7369 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
7371 with sub-table disassembly and handling invalid sub-tables. Attempt
7373 after an invalid sub-table ID.
7375 ----------------------------------------
7376 22 April 2009. Summary of changes for version 20090422:
7378 1) ACPI CA Core Subsystem:
7380 Fixed a compatibility issue with the recently released I/O port
7382 mechanism. For windows compatibility, 1) On a port protection violation,
7383 simply ignore the request and do not return an exception (allow the
7385 method to continue execution.) 2) If only part of the request overlaps a
7386 protected port, read/write the individual ports that are not protected.
7390 Enhanced the execution of the ASL/AML BreakPoint operator so that it
7392 breaks into the AML debugger if the debugger is present. This matches the
7393 ACPI-defined behavior.
7395 Fixed several possible warnings related to the use of the configurable
7396 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7397 pointer with no warnings. Also fixes several warnings in printf-like
7398 statements for the 64-bit build when the type is configured as a pointer.
7401 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7403 warning options.) Examples include printf formats, aliasing, unused
7405 missing prototypes, missing switch default statements, use of non-ANSI
7406 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7408 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7410 Example Code and Data Size: These are the sizes for the OS-independent
7411 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7412 debug version of the code includes the debug output trace mechanism and
7414 much larger code and data size.
7417 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7418 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7420 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7421 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7423 2) iASL Compiler/Disassembler and Tools:
7425 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7430 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7432 correctly digest Windows/DOS formatted files (with CR/LF).
7434 iASL: Added a new option for "quiet mode" (-va) that produces only the
7435 compilation summary, not individual errors and warnings. Useful for large
7438 AcpiExec: Implemented a new option (-z) to enable a forced
7440 timeout that can be used to detect hang conditions during execution of
7442 code (includes both internal semaphores and AML-defined mutexes and
7445 Added new makefiles for the generation of acpica in a generic unix-like
7446 environment. These makefiles are intended to generate the acpica tools
7448 utilities from the original acpica git source tree structure.
7450 Test Suites: Updated and cleaned up the documentation files. Updated the
7451 copyrights to 2009, affecting all source files. Use the new version of
7453 with quiet mode. Increased the number of available semaphores in the
7455 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
7457 an alternate implementation of the semaphore timeout to allow aslts to
7458 execute fully on Cygwin.
7460 ----------------------------------------
7461 20 March 2009. Summary of changes for version 20090320:
7463 1) ACPI CA Core Subsystem:
7465 Fixed a possible race condition between AcpiWalkNamespace and dynamic
7467 unloads. Added a reader/writer locking mechanism to allow multiple
7469 namespace walks (readers), but block a dynamic table unload until it can
7471 exclusive write access to the namespace. This fixes a problem where a
7473 unload could (possibly catastrophically) delete the portion of the
7475 that is currently being examined by a walk. Adds a new file, utlock.c,
7477 implements the reader/writer lock mechanism. ACPICA BZ 749.
7479 Fixed a regression introduced in version 20090220 where a change to the
7481 handling could cause the ACPICA subsystem to access non-existent I/O
7484 Modified the handling of FADT register and table (FACS/DSDT) addresses.
7486 FADT can contain both 32-bit and 64-bit versions of these addresses.
7487 Previously, the 64-bit versions were favored, meaning that if both 32 and
7489 versions were valid, but not equal, the 64-bit version was used. This was
7490 found to cause some machines to fail. Now, in this case, the 32-bit
7492 is used instead. This now matches the Windows behavior.
7494 Implemented a new mechanism to protect certain I/O ports. Provides
7496 compatibility and protects the standard PC I/O ports from access via AML
7497 code. Adds a new file, hwvalid.c
7499 Fixed a possible extraneous warning message from the FADT support. The
7500 message warns of a 32/64 length mismatch between the legacy and GAS
7501 definitions for a register.
7503 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
7505 made obsolete by the port protection mechanism above. It was previously
7507 to validate the entire address range of an operation region, which could
7509 incorrect if the range included illegal ports, but fields within the
7510 operation region did not actually access those ports. Validation is now
7511 performed on a per-field basis instead of the entire region.
7513 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
7514 Ignored bits must be "preserved" according to the ACPI spec. Usually,
7516 means a read/modify/write when writing to the register. However, for
7518 registers, writing a one means clear the event. Writing a zero means
7520 the event (do not clear.) This behavior is clarified in the ACPI 4.0
7522 and the ACPICA code now simply always writes a zero to the ignored bit.
7524 Modified the handling of ignored bits for the PM1 A/B Control Registers.
7526 per the ACPI specification, for the control registers, preserve
7527 (read/modify/write) all bits that are defined as either reserved or
7530 Updated the handling of write-only bits in the PM1 A/B Control Registers.
7531 When reading the register, zero the write-only bits as per the ACPI spec.
7532 ACPICA BZ 443. Lin Ming.
7534 Removed "Linux" from the list of supported _OSI strings. Linux no longer
7535 wants to reply true to this request. The Windows strings are the only
7537 through the AML that are tested and known to work properly.
7540 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7541 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7543 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7544 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7546 2) iASL Compiler/Disassembler and Tools:
7548 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
7552 ----------------------------------------
7553 20 February 2009. Summary of changes for version 20090220:
7555 1) ACPI CA Core Subsystem:
7557 Optimized the ACPI register locking. Removed locking for reads from the
7559 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
7561 not required when reading the single-bit registers. The
7562 AcpiGetRegisterUnlocked function is no longer needed and has been
7564 This will improve performance for reads on these registers. ACPICA BZ
7567 Fixed the parameter validation for AcpiRead/Write. Now return
7568 AE_BAD_PARAMETER if the input register pointer is null, and
7571 the register has an address of zero. Previously, these cases simply
7573 AE_OK. For optional registers such as PM1B status/enable/control, the
7575 should check for a valid register address before calling. ACPICA BZ 748.
7577 Renamed the external ACPI bit register access functions. Renamed
7578 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
7579 functions. The new names are AcpiReadBitRegister and
7580 AcpiWriteBitRegister.
7581 Also, restructured the code for these functions by simplifying the code
7583 and condensing duplicate code to reduce code size.
7585 Added new functions to transparently handle the possibly split PM1 A/B
7586 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
7588 now handle the split registers for PM1 Status, Enable, and Control.
7593 Added a function to handle the PM1 control registers,
7594 AcpiHwWritePm1Control.
7595 This function writes both of the PM1 control registers (A/B). These
7597 are different than the PM1 A/B status and enable registers in that
7599 values can be written to the A/B registers. Most notably, the SLP_TYP
7601 can be different, as per the values returned from the _Sx predefined
7604 Removed an extra register write within AcpiHwClearAcpiStatus. This
7606 was writing an optional PM1B status register twice. The existing call to
7608 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
7610 register. ACPICA BZ 751.
7612 Split out the PM1 Status registers from the FADT. Added new globals for
7614 registers (A/B), similar to the way the PM1 Enable registers are handled.
7615 Instead of overloading the FADT Event Register blocks. This makes the
7617 clearer and less prone to error.
7619 Fixed the warning message for when the platform contains too many ACPI
7621 for the default size of the global root table data structure. The
7623 for the truncation value was incorrect.
7625 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7626 obsolete macro, since it is now a simple reference to ->common.type.
7628 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7630 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7631 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7632 simply SLEEP_TYPE. ACPICA BZ 754.
7634 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7635 function is only needed on 64-bit host operating systems and is thus not
7636 included for 32-bit hosts.
7638 Debug output: print the input and result for invocations of the _OSI
7640 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7642 verbosity of this debug level. Len Brown.
7644 Example Code and Data Size: These are the sizes for the OS-independent
7645 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7646 debug version of the code includes the debug output trace mechanism and
7648 much larger code and data size.
7651 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7652 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7654 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7655 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7657 2) iASL Compiler/Disassembler and Tools:
7659 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7660 various legal performance profiles.
7662 ----------------------------------------
7663 23 January 2009. Summary of changes for version 20090123:
7665 1) ACPI CA Core Subsystem:
7667 Added the 2009 copyright to all module headers and signons. This affects
7668 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7669 the tools/utilities.
7671 Implemented a change to allow the host to override any ACPI table,
7673 dynamically loaded tables. Previously, only the DSDT could be replaced by
7675 host. With this change, the AcpiOsTableOverride interface is called for
7677 table found in the RSDT/XSDT during ACPICA initialization, and also
7679 a table is dynamically loaded via the AML Load operator.
7681 Updated FADT flag definitions, especially the Boot Architecture flags.
7683 Debugger: For the Find command, automatically pad the input ACPI name
7685 underscores if the name is shorter than 4 characters. This enables a
7687 with the actual namespace entry which is itself padded with underscores.
7689 Example Code and Data Size: These are the sizes for the OS-independent
7690 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7691 debug version of the code includes the debug output trace mechanism and
7693 much larger code and data size.
7696 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7697 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7699 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7700 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7702 2) iASL Compiler/Disassembler and Tools:
7704 Fix build error under Bison-2.4.
7706 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7708 flags. Now decode all flags, regardless of the FADT version. Flag output
7709 includes the FADT version which first defined each flag.
7711 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7713 DSDT). Windows only.
7715 ----------------------------------------
7716 04 December 2008. Summary of changes for version 20081204:
7718 1) ACPI CA Core Subsystem:
7720 The ACPICA Programmer Reference has been completely updated and revamped
7722 this release. This includes updates to the external interfaces, OSL
7723 interfaces, the overview sections, and the debugger reference.
7725 Several new ACPICA interfaces have been implemented and documented in the
7726 programmer reference:
7727 AcpiReset - Writes the reset value to the FADT-defined reset register.
7728 AcpiDisableAllGpes - Disable all available GPEs.
7729 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7730 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7731 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7732 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7733 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7735 Most of the public ACPI hardware-related interfaces have been moved to a
7737 file, components/hardware/hwxface.c
7739 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7740 register lengths within the FADT are now used, and the low level ACPI
7741 register access no longer hardcodes the ACPI register lengths. Given that
7742 there may be some risk in actually trusting the FADT register lengths, a
7744 time option was added to fall back to the default hardcoded lengths if
7746 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7747 option is set to true for now, and a warning is issued if a suspicious
7749 register length is overridden with the default value.
7751 Fixed a reference count issue in NsRepairObject. This problem was
7753 in version 20081031 as part of a fix to repair Buffer objects within
7756 Added semaphore support to the Linux/Unix application OS-services layer
7757 (OSL). ACPICA BZ 448. Lin Ming.
7759 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7761 be implemented in the OSL, or will binary semaphores be used instead.
7763 Example Code and Data Size: These are the sizes for the OS-independent
7764 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7765 debug version of the code includes the debug output trace mechanism and
7767 much larger code and data size.
7770 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7771 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7773 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7774 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7776 2) iASL Compiler/Disassembler and Tools:
7778 iASL: Completed the '-e' option to include additional ACPI tables in
7781 aid with disassembly and External statement generation. ACPICA BZ 742.
7785 iASL: Removed the "named object in while loop" error. The compiler cannot
7786 determine how many times a loop will execute. ACPICA BZ 730.
7788 Disassembler: Implemented support for FADT revision 2 (MS extension).
7792 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7795 ----------------------------------------
7796 31 October 2008. Summary of changes for version 20081031:
7798 1) ACPI CA Core Subsystem:
7800 Restructured the ACPICA header files into public/private. acpi.h now
7802 only the "public" acpica headers. All other acpica headers are "private"
7804 should not be included by acpica users. One new file, accommon.h is used
7806 include the commonly used private headers for acpica code generation.
7808 plans include moving all private headers to a new subdirectory.
7810 Implemented an automatic Buffer->String return value conversion for
7811 predefined ACPI methods. For these methods (such as _BIF), added
7813 conversion for return objects that are required to be a String, but a
7815 was found instead. This can happen when reading string battery data from
7817 operation region, because it used to be difficult to convert the data
7819 buffer to string from within the ASL. Ensures that the host OS is
7821 with a valid null-terminated string. Linux BZ 11822.
7823 Updated the FACS waking vector interfaces. Split
7824 AcpiSetFirmwareWakingVector
7825 into two: one for the 32-bit vector, another for the 64-bit vector. This
7827 required because the host OS must setup the wake much differently for
7829 vector (real vs. protected mode, etc.) and the interface itself should
7832 deciding which vector to use. Also, eliminated the
7833 GetFirmwareWakingVector
7834 interface, as it served no purpose (only the firmware reads the vector,
7836 only writes the vector.) ACPICA BZ 731.
7838 Implemented a mechanism to escape infinite AML While() loops. Added a
7840 counter to force exit from AML While loops if the count becomes too
7842 This can occur in poorly written AML when the hardware does not respond
7843 within a while loop and the loop does not implement a timeout. The
7845 loop count is configurable. A new exception code is returned when a loop
7847 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7849 Optimized the execution of AML While loops. Previously, a control state
7850 object was allocated and freed for each execution of the loop. The
7851 optimization is to simply reuse the control state for each iteration.
7853 speeds up the raw loop execution time by about 5%.
7855 Enhanced the implicit return mechanism. For Windows compatibility, return
7857 implicit integer of value zero for methods that contain no executable
7859 Such methods are seen in the field as stubs (presumably), and can cause
7860 drivers to fail if they expect a return value. Lin Ming.
7862 Allow multiple backslashes as root prefixes in namepaths. In a fully
7863 qualified namepath, allow multiple backslash prefixes. This can happen
7865 is seen in the field) because of the use of a double-backslash in strings
7866 (since backslash is the escape character) causing confusion. ACPICA BZ
7870 Emit a warning if two different FACS or DSDT tables are discovered in the
7871 FADT. Checks if there are two valid but different addresses for the FACS
7873 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7875 Consolidated the method argument count validation code. Merged the code
7877 validates control method argument counts into the predefined validation
7878 module. Eliminates possible multiple warnings for incorrect argument
7881 Implemented ACPICA example code. Includes code for ACPICA initialization,
7882 handler installation, and calling a control method. Available at
7883 source/tools/examples.
7885 Added a global pointer for FACS table to simplify internal FACS access.
7887 the global pointer instead of using AcpiGetTableByIndex for each FACS
7889 This simplifies the code for the Global Lock and the Firmware Waking
7892 Example Code and Data Size: These are the sizes for the OS-independent
7893 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7894 debug version of the code includes the debug output trace mechanism and
7896 much larger code and data size.
7899 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7900 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7902 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7903 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7905 2) iASL Compiler/Disassembler and Tools:
7907 iASL: Improved disassembly of external method calls. Added the -e option
7909 allow the inclusion of additional ACPI tables to help with the
7912 method invocations and the generation of external declarations during the
7913 disassembly. Certain external method invocations cannot be disassembled
7914 properly without the actual declaration of the method. Use the -e option
7916 include the table where the external method(s) are actually declared.
7918 useful for disassembling SSDTs that make method calls back to the master
7919 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
7921 -e dsdt.aml ssdt1.aml
7923 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
7924 problem where the use of an alias within a namepath would result in a not
7925 found error or cause the compiler to fault. Also now allows forward
7926 references from the Alias operator itself. ACPICA BZ 738.
7928 ----------------------------------------
7929 26 September 2008. Summary of changes for version 20080926:
7931 1) ACPI CA Core Subsystem:
7933 Designed and implemented a mechanism to validate predefined ACPI methods
7935 objects. This code validates the predefined ACPI objects (objects whose
7937 start with underscore) that appear in the namespace, at the time they are
7938 evaluated. The argument count and the type of the returned object are
7939 validated against the ACPI specification. The purpose of this validation
7941 to detect problems with the BIOS-implemented predefined ACPI objects
7943 the results are returned to the ACPI-related drivers. Future enhancements
7945 include actual repair of incorrect return objects where possible. Two new
7946 files are nspredef.c and acpredef.h.
7948 Fixed a fault in the AML parser if a memory allocation fails during the
7950 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
7952 Fixed an issue with implicit return compatibility. This change improves
7954 implicit return mechanism to be more compatible with the MS interpreter.
7956 Ming, ACPICA BZ 349.
7958 Implemented support for zero-length buffer-to-string conversions. Allow
7960 length strings during interpreter buffer-to-string conversions. For
7962 during the ToDecimalString and ToHexString operators, as well as implicit
7963 conversions. Fiodor Suietov, ACPICA BZ 585.
7965 Fixed two possible memory leaks in the error exit paths of
7966 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
7968 similar in that they use a stack of state objects in order to eliminate
7969 recursion. The stack must be fully unwound and deallocated if an error
7970 occurs. Lin Ming. ACPICA BZ 383.
7972 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
7974 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
7975 Moore ACPICA BZ 442.
7977 Removed the obsolete version number in module headers. Removed the
7978 "$Revision" number that appeared in each module header. This version
7980 was useful under SourceSafe and CVS, but has no meaning under git. It is
7982 only incorrect, it could also be misleading.
7984 Example Code and Data Size: These are the sizes for the OS-independent
7985 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7986 debug version of the code includes the debug output trace mechanism and
7988 much larger code and data size.
7991 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7992 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7994 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7995 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7997 ----------------------------------------
7998 29 August 2008. Summary of changes for version 20080829:
8000 1) ACPI CA Core Subsystem:
8002 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
8003 Reference. Changes include the elimination of cheating on the Object
8005 for the DdbHandle subtype, addition of a reference class field to
8006 differentiate the various reference types (instead of an AML opcode), and
8008 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
8010 Reduce an error to a warning for an incorrect method argument count.
8011 Previously aborted with an error if too few arguments were passed to a
8012 control method via the external ACPICA interface. Now issue a warning
8014 and continue. Handles the case where the method inadvertently declares
8016 many arguments, but does not actually use the extra ones. Applies mainly
8018 the predefined methods. Lin Ming. Linux BZ 11032.
8020 Disallow the evaluation of named object types with no intrinsic value.
8022 AE_TYPE for objects that have no value and therefore evaluation is
8024 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
8026 these types were allowed, but an exception would be generated at some
8028 during the evaluation. Now, the error is generated up front.
8030 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
8031 (nsnames.c). Fixes a leak in the error exit path.
8033 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
8035 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
8037 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
8040 Removed obsolete and/or unused exception codes from the acexcep.h header.
8041 There is the possibility that certain device drivers may be affected if
8043 use any of these exceptions.
8045 The ACPICA documentation has been added to the public git source tree,
8047 acpica/documents. Included are the ACPICA programmer reference, the iASL
8048 compiler reference, and the changes.txt release logfile.
8050 Example Code and Data Size: These are the sizes for the OS-independent
8051 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8052 debug version of the code includes the debug output trace mechanism and
8054 much larger code and data size.
8057 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8058 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8060 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8061 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8063 2) iASL Compiler/Disassembler and Tools:
8065 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
8066 defines _SCP with 3 arguments. Previous versions defined it with only 1
8067 argument. iASL now allows both definitions.
8069 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
8071 length subtables when disassembling ACPI tables. Also fixed a couple of
8072 errors where a full 16-bit table type field was not extracted from the
8076 acpisrc: Improve comment counting mechanism for generating source code
8077 statistics. Count first and last lines of multi-line comments as
8079 not comment lines. Handle Linux legal header in addition to standard
8083 ----------------------------------------
8085 29 July 2008. Summary of changes for version 20080729:
8087 1) ACPI CA Core Subsystem:
8089 Fix a possible deadlock in the GPE dispatch. Remove call to
8090 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
8092 to acquire the GPE lock but can deadlock since the GPE lock is already
8094 at dispatch time. This code was introduced in version 20060831 as a
8096 to Linux BZ 6881 and has since been removed from Linux.
8098 Add a function to dereference returned reference objects. Examines the
8100 object from a call to AcpiEvaluateObject. Any Index or RefOf references
8102 automatically dereferenced in an attempt to return something useful
8104 reference types cannot be converted into an external ACPI_OBJECT.)
8106 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
8108 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
8109 subtables for the MADT and one new subtable for the SRAT. Includes
8110 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
8112 Specification, June 2008.
8114 Additional error checking for pathname utilities. Add error check after
8116 calls to AcpiNsGetPathnameLength. Add status return from
8117 AcpiNsBuildExternalPath and check after all calls. Add parameter
8119 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
8121 Return status from the global init function AcpiUtGlobalInitialize. This
8123 used by both the kernel subsystem and the utilities such as iASL
8125 The function could possibly fail when the caches are initialized. Yang
8128 Add a function to decode reference object types to strings. Created for
8129 improved error messages.
8131 Improve object conversion error messages. Better error messages during
8133 conversion from internal to the external ACPI_OBJECT. Used for external
8135 to AcpiEvaluateObject.
8137 Example Code and Data Size: These are the sizes for the OS-independent
8138 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8139 debug version of the code includes the debug output trace mechanism and
8141 much larger code and data size.
8144 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8145 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8147 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8148 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8150 2) iASL Compiler/Disassembler and Tools:
8152 Debugger: fix a possible hang when evaluating non-methods. Fixes a
8154 introduced in version 20080701. If the object being evaluated (via
8156 command) is not a method, the debugger can hang while trying to obtain
8158 existent parameters.
8160 iASL: relax error for using reserved "_T_x" identifiers. These names can
8161 appear in a disassembled ASL file if they were emitted by the original
8162 compiler. Instead of issuing an error or warning and forcing the user to
8163 manually change these names, issue a remark instead.
8165 iASL: error if named object created in while loop. Emit an error if any
8167 object is created within a While loop. If allowed, this code will
8170 run-time error on the second iteration of the loop when an attempt is
8173 create the same named object twice. ACPICA bugzilla 730.
8175 iASL: Support absolute pathnames for include files. Add support for
8177 pathnames within the Include operator. previously, only relative
8181 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
8183 The ACPI spec requires one interrupt minimum. BZ 423
8185 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
8186 Handles the case for the Interrupt Resource Descriptor where
8187 the ResourceSource argument is omitted but ResourceSourceIndex
8188 is present. Now leave room for the Index. BZ 426
8190 iASL: Prevent error message if CondRefOf target does not exist. Fixes
8192 where an error message is emitted if the target does not exist. BZ 516
8194 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
8195 (get ACPI tables on Windows). This was apparently broken in version
8198 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
8200 the EOF happens immediately after the last table in the input file. Print
8201 completion message. Previously, no message was displayed in this case.
8203 ----------------------------------------
8204 01 July 2008. Summary of changes for version 20080701:
8206 0) Git source tree / acpica.org
8208 Fixed a problem where a git-clone from http would not transfer the entire
8211 1) ACPI CA Core Subsystem:
8213 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
8214 enable bit. Now performs a read-change-write of the enable register
8216 of simply writing out the cached enable mask. This will prevent
8218 enabling of GPEs if a rogue GPE is received during initialization (before
8220 handlers are installed.)
8222 Implemented a copy for dynamically loaded tables. Previously, dynamically
8223 loaded tables were simply mapped - but on some machines this memory is
8224 corrupted after suspend. Now copy the table to a local buffer. For the
8225 OpRegion case, added checksum verify. Use the table length from the table
8226 header, not the region length. For the Buffer case, use the table length
8227 also. Dennis Noordsij, Bob Moore. BZ 10734
8229 Fixed a problem where the same ACPI table could not be dynamically loaded
8231 unloaded more than once. Without this change, a table cannot be loaded
8233 once it has been loaded/unloaded one time. The current mechanism does not
8234 unregister a table upon an unload. During a load, if the same table is
8236 this no longer returns an exception. BZ 722
8238 Fixed a problem where the wrong descriptor length was calculated for the
8239 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
8241 are calculated as 12 bytes long, but the actual length in the internal
8242 descriptor is 16 because of the round-up to 8 on the 64-bit build.
8244 by Linn Crosetto. BZ 728
8246 Fixed a possible memory leak in the Unload operator. The DdbHandle
8248 by Load() did not have its reference count decremented during unload,
8250 to a memory leak. Lin Ming. BZ 727
8252 Fixed a possible memory leak when deleting thermal/processor objects. Any
8253 associated notify handlers (and objects) were not being deleted. Fiodor
8256 Fixed the ordering of the ASCII names in the global mutex table to match
8258 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
8260 Vegard Nossum. BZ 726
8262 Enhanced the AcpiGetObjectInfo interface to return the number of required
8263 arguments if the object is a control method. Added this call to the
8265 so the proper number of default arguments are passed to a method. This
8266 prevents a warning when executing methods from AcpiExec.
8268 Added a check for an invalid handle in AcpiGetObjectInfo. Return
8269 AE_BAD_PARAMETER if input handle is invalid. BZ 474
8271 Fixed an extraneous warning from exconfig.c on the 64-bit build.
8273 Example Code and Data Size: These are the sizes for the OS-independent
8274 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8275 debug version of the code includes the debug output trace mechanism and
8277 much larger code and data size.
8280 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8281 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8283 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8284 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8286 2) iASL Compiler/Disassembler and Tools:
8288 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
8289 resource descriptor names.
8291 iASL: Detect invalid ASCII characters in input (windows version). Removed
8293 "-CF" flag from the flex compile, enables correct detection of non-ASCII
8294 characters in the input. BZ 441
8296 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
8298 "result of operation not used" warning when the DDB handle returned from
8299 LoadTable is not used. The warning is not needed. BZ 590
8301 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
8304 pass address of table to the AML. Added option to disable OpRegion
8306 to allow creation of an OpRegion with a real address that was passed to
8308 All of this allows testing of the Load and Unload operators from
8311 Debugger: update tables command for unloaded tables. Handle unloaded
8313 and use the standard table header output routine.
8315 ----------------------------------------
8316 09 June 2008. Summary of changes for version 20080609:
8318 1) ACPI CA Core Subsystem:
8320 Implemented a workaround for reversed _PRT entries. A significant number
8322 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
8323 change dynamically detects and repairs this problem. Provides
8325 with MS ACPI. BZ 6859
8327 Simplified the internal ACPI hardware interfaces to eliminate the locking
8328 flag parameter from Register Read/Write. Added a new external interface,
8329 AcpiGetRegisterUnlocked.
8331 Fixed a problem where the invocation of a GPE control method could hang.
8333 was a regression introduced in 20080514. The new method argument count
8334 validation mechanism can enter an infinite loop when a GPE method is
8335 dispatched. Problem fixed by removing the obsolete code that passed GPE
8337 information to the notify handler via the control method parameter
8340 Fixed a problem where the _SST execution status was incorrectly returned
8342 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
8344 20080514. _SST is optional and a NOT_FOUND exception should never be
8347 Fixed a problem where a deleted object could be accessed from within the
8349 parser. This was a regression introduced in version 20080123 as a fix for
8351 Unload operator. Lin Ming. BZ 10669
8353 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
8355 and eliminated the use of a negative index in a loop. Operands are now
8356 displayed in the correct order, not backwards. This also fixes a
8358 introduced in 20080514 on 64-bit systems where the elimination of
8359 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
8362 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
8364 path did not delete a locally allocated structure.
8366 Updated definitions for the DMAR and SRAT tables to synchronize with the
8367 current specifications. Includes disassembler support.
8369 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
8370 loop termination value was used. Loop terminated on iteration early,
8372 one mutex. Linn Crosetto
8374 Example Code and Data Size: These are the sizes for the OS-independent
8375 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8376 debug version of the code includes the debug output trace mechanism and
8378 much larger code and data size.
8381 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8382 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8384 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8385 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8387 2) iASL Compiler/Disassembler and Tools:
8389 Disassembler: Implemented support for EisaId() within _CID objects. Now
8390 disassemble integer _CID objects back to EisaId invocations, including
8391 multiple integers within _CID packages. Includes single-step support for
8394 Disassembler: Added support for DMAR and SRAT table definition changes.
8396 ----------------------------------------
8397 14 May 2008. Summary of changes for version 20080514:
8399 1) ACPI CA Core Subsystem:
8401 Fixed a problem where GPEs were enabled too early during the ACPICA
8402 initialization. This could lead to "handler not installed" errors on some
8403 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8405 ensures that all operation regions and devices throughout the namespace
8407 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8409 Implemented a change to the enter sleep code. Moved execution of the _GTS
8410 method to just before setting sleep enable bit. The execution was moved
8412 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8413 immediately before the SLP_EN bit is set, as per the ACPI specification.
8416 Implemented a fix to disable unknown GPEs (2nd version). Now always
8418 the GPE, even if ACPICA thinks that that it is already disabled. It is
8419 possible that the AML or some other code has enabled the GPE unbeknownst
8423 Fixed a problem with the Field operator where zero-length fields would
8425 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8427 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8429 Implemented a fix for the Load operator, now load the table at the
8431 root. This reverts a change introduced in version 20071019. The table is
8433 loaded at the namespace root even though this goes against the ACPI
8434 specification. This provides compatibility with other ACPI
8436 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8439 Fixed a problem where ACPICA would not Load() tables with unusual
8441 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8442 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8443 Therefore, signature validation is worthless. Apparently MS ACPI accepts
8445 signatures, ACPICA must be compatible. BZ 10454.
8447 Fixed a possible negative array index in AcpiUtValidateException. Added
8449 fields to the exception string arrays to eliminate a -1 subtraction on
8453 Updated the debug tracking macros to reduce overall code and data size.
8454 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
8455 instead of pointers to static strings. Jan Beulich and Bob Moore.
8457 Implemented argument count checking in control method invocation via
8458 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
8460 many. This applies only to extern programmatic control method execution,
8462 method-to-method calls within the AML. Lin Ming.
8464 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
8466 longer needed, especially with the removal of 16-bit support. It was
8468 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
8471 32/64-bit platforms is required.
8473 Added the C const qualifier for appropriate string constants -- mostly
8474 MODULE_NAME and printf format strings. Jan Beulich.
8476 Example Code and Data Size: These are the sizes for the OS-independent
8477 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8478 debug version of the code includes the debug output trace mechanism and
8480 much larger code and data size.
8483 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8484 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8486 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8487 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8489 2) iASL Compiler/Disassembler and Tools:
8491 Implemented ACPI table revision ID validation in the disassembler. Zero
8493 always invalid. For DSDTs, the ID controls the interpreter integer width.
8495 means 32-bit and this is unusual. 2 or greater is 64-bit.
8497 ----------------------------------------
8498 21 March 2008. Summary of changes for version 20080321:
8500 1) ACPI CA Core Subsystem:
8502 Implemented an additional change to the GPE support in order to suppress
8503 spurious or stray GPEs. The AcpiEvDisableGpe function will now
8505 disable incoming GPEs that are neither enabled nor disabled -- meaning
8507 the GPE is unknown to the system. This should prevent future interrupt
8509 from that GPE. BZ 6217 (Zhang Rui)
8511 Fixed a problem where NULL package elements were not returned to the
8512 AcpiEvaluateObject interface correctly. The element was simply ignored
8513 instead of returning a NULL ACPI_OBJECT package element, potentially
8515 a buffer overflow and/or confusing the caller who expected a fixed number
8517 elements. BZ 10132 (Lin Ming, Bob Moore)
8519 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
8521 Qword), Field, BankField, and IndexField operators when invoked from
8523 an executing control method. In this case, these operators created
8525 nodes that were incorrectly left marked as permanent nodes instead of
8526 temporary nodes. This could cause a problem if there is race condition
8527 between an exiting control method and a running namespace walk. (Reported
8531 Fixed a problem where the CreateField and CreateXXXField operators would
8532 incorrectly allow duplicate names (the name of the field) with no
8536 Implemented several changes for Notify handling. Added support for new
8538 values (ACPI 2.0+) and improved the Notify debug output. Notify on
8539 PowerResource objects is no longer allowed, as per the ACPI
8541 (Bob Moore, Zhang Rui)
8543 All Reference Objects returned via the AcpiEvaluateObject interface are
8545 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
8547 NULL objects - either NULL package elements or unresolved named
8550 Fixed a problem where an extraneous debug message was produced for
8552 objects (when debugging enabled). The message "Package List length larger
8553 than NumElements count" is now produced in the correct case, and is now
8555 error message rather than a debug message. Added a debug message for the
8556 opposite case, where NumElements is larger than the Package List (the
8558 will be padded out with NULL elements as per the ACPI spec.)
8560 Implemented several improvements for the output of the ASL "Debug" object
8562 clarify and keep all data for a given object on one output line.
8564 Fixed two size calculation issues with the variable-length Start
8566 resource descriptor.
8568 Example Code and Data Size: These are the sizes for the OS-independent
8569 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8570 debug version of the code includes the debug output trace mechanism and
8572 a much larger code and data size.
8575 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8576 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8578 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8579 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8581 2) iASL Compiler/Disassembler and Tools:
8583 Fixed a problem with the use of the Switch operator where execution of
8585 containing method by multiple concurrent threads could cause an
8586 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
8587 actual Switch opcode, it must be simulated with local named temporary
8588 variables and if/else pairs. The solution chosen was to mark any method
8590 uses Switch as Serialized, thus preventing multiple thread entries. BZ
8593 ----------------------------------------
8594 13 February 2008. Summary of changes for version 20080213:
8596 1) ACPI CA Core Subsystem:
8598 Implemented another MS compatibility design change for GPE/Notify
8600 GPEs are now cleared/enabled asynchronously to allow all pending notifies
8602 complete first. It is expected that the OSL will queue the enable request
8603 behind all pending notify requests (may require changes to the local host
8605 in AcpiOsExecute). Alexey Starikovskiy.
8607 Fixed a problem where buffer and package objects passed as arguments to a
8608 control method via the external AcpiEvaluateObject interface could cause
8610 AE_AML_INTERNAL exception depending on the order and type of operators
8611 executed by the target control method.
8613 Fixed a problem where resource descriptor size optimization could cause a
8614 problem when a _CRS resource template is passed to a _SRS method. The
8616 resource template must use the same descriptors (with the same size) as
8617 returned from _CRS. This change affects the following resource
8619 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
8622 Fixed a problem where a CopyObject to RegionField, BankField, and
8624 objects did not perform an implicit conversion as it should. These types
8626 retain their initial type permanently as per the ACPI specification.
8628 a CopyObject to all other object types should not perform an implicit
8629 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8631 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8632 match device CIDs did not examine the entire list of available CIDs, but
8633 instead aborted on the first non-matching CID. Andrew Patterson.
8635 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8637 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8638 truncating the upper dword of a 64-bit value. This macro is only used to
8639 display debug output, so no incorrect calculations were made. Also,
8640 reimplemented the macro so that a 64-bit shift is not performed by
8641 inefficient compilers.
8643 Added missing va_end statements that should correspond with each va_start
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: 79.5K Code, 17.2K Data, 96.7K Total
8654 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8656 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8657 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8659 2) iASL Compiler/Disassembler and Tools:
8661 Implemented full disassembler support for the following new ACPI tables:
8662 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8663 complicated HEST table. These tables support the Windows Hardware Error
8664 Architecture (WHEA).
8666 ----------------------------------------
8667 23 January 2008. Summary of changes for version 20080123:
8669 1) ACPI CA Core Subsystem:
8671 Added the 2008 copyright to all module headers and signons. This affects
8672 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8673 the tools/utilities.
8675 Fixed a problem with the SizeOf operator when used with Package and
8677 objects. These objects have deferred execution for some arguments, and
8679 execution is now completed before the SizeOf is executed. This problem
8681 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8685 Implemented an enhancement to the interpreter "slack mode". In the
8688 an explicit return or an implicitly returned object from the last
8690 opcode, a control method will now implicitly return an integer of value 0
8692 Microsoft compatibility. (Lin Ming) BZ 392
8694 Fixed a problem with the Load operator where an exception was not
8697 the case where the table is already loaded. (Lin Ming) BZ 463
8699 Implemented support for the use of DDBHandles as an Indexed Reference, as
8701 the ACPI spec. (Lin Ming) BZ 486
8703 Implemented support for UserTerm (Method invocation) for the Unload
8705 as per the ACPI spec. (Lin Ming) BZ 580
8707 Fixed a problem with the LoadTable operator where the OemId and
8709 input strings could cause unexpected failures if they were shorter than
8711 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8713 Implemented support for UserTerm (Method invocation) for the Unload
8715 as per the ACPI spec. (Lin Ming) BZ 580
8717 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8719 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8721 Example Code and Data Size: These are the sizes for the OS-independent
8722 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8723 debug version of the code includes the debug output trace mechanism and
8725 a much larger code and data size.
8728 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8729 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8731 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8732 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8734 2) iASL Compiler/Disassembler and Tools:
8736 Implemented support in the disassembler for checksum validation on
8738 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8740 header dump at the start of the disassembly.
8742 Implemented additional debugging information in the namespace listing
8744 created during compilation. In addition to the namespace hierarchy, the
8746 pathname to each namespace object is displayed.
8748 Fixed a problem with the disassembler where invalid ACPI tables could
8750 faults or infinite loops.
8752 Fixed an unexpected parse error when using the optional "parameter types"
8753 list in a control method declaration. (Lin Ming) BZ 397
8755 Fixed a problem where two External declarations with the same name did
8757 cause an error (Lin Ming) BZ 509
8759 Implemented support for full TermArgs (adding Argx, Localx and method
8760 invocation) for the ParameterData parameter to the LoadTable operator.
8764 ----------------------------------------
8765 19 December 2007. Summary of changes for version 20071219:
8767 1) ACPI CA Core Subsystem:
8769 Implemented full support for deferred execution for the TermArg string
8770 arguments for DataTableRegion. This enables forward references and full
8771 operand resolution for the three string arguments. Similar to
8773 deferred argument execution.) Lin Ming. BZ 430
8775 Implemented full argument resolution support for the BankValue argument
8777 BankField. Previously, only constants were supported, now any TermArg may
8779 used. Lin Ming BZ 387, 393
8781 Fixed a problem with AcpiGetDevices where the search of a branch of the
8782 device tree could be terminated prematurely. In accordance with the ACPI
8783 specification, the search down the current branch is terminated if a
8785 is both not present and not functional (instead of just not present.)
8789 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8791 the underlying AML code changed the GPE enable registers. Now, any
8793 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8795 instead of simply ignored. Rui Zhang.
8797 Fixed a problem with Index Fields where the Index register was
8799 limited to a maximum of 32 bits. Now any size may be used.
8801 Fixed a couple memory leaks associated with "implicit return" objects
8803 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8805 Example Code and Data Size: These are the sizes for the OS-independent
8806 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8807 debug version of the code includes the debug output trace mechanism and
8809 a much larger code and data size.
8812 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8813 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8815 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8816 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8818 ----------------------------------------
8819 14 November 2007. Summary of changes for version 20071114:
8821 1) ACPI CA Core Subsystem:
8823 Implemented event counters for each of the Fixed Events, the ACPI SCI
8824 (interrupt) itself, and control methods executed. Named
8825 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8827 should be useful for debugging and statistics.
8829 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8830 contents of the various event counters. Returns the current values for
8831 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8832 AcpiMethodCount. The interface can be expanded in the future if new
8834 are added. Device drivers should use this interface rather than access
8838 Fixed a problem with the FromBCD and ToBCD operators. With some
8840 the ShortDivide function worked incorrectly, causing problems with the
8842 functions with large input values. A truncation from 64-bit to 32-bit
8843 inadvertently occurred. Internal BZ 435. Lin Ming
8845 Fixed a problem with Index references passed as method arguments.
8847 passed as arguments to control methods were dereferenced immediately
8849 control was passed to the called method). The references are now
8851 passed directly to the called method. BZ 5389. Lin Ming
8853 Fixed a problem with CopyObject used in conjunction with the Index
8855 The reference was incorrectly dereferenced before the copy. The reference
8857 now correctly copied. BZ 5391. Lin Ming
8859 Fixed a problem with Control Method references within Package objects.
8861 references are now correctly generated. This completes the package
8862 construction overhaul that began in version 20071019.
8864 Example Code and Data Size: These are the sizes for the OS-independent
8865 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8866 debug version of the code includes the debug output trace mechanism and
8868 a much larger code and data size.
8871 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8872 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8874 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8875 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8878 2) iASL Compiler/Disassembler and Tools:
8880 The AcpiExec utility now installs handlers for all of the predefined
8881 Operation Region types. New types supported are: PCI_Config, CMOS, and
8884 Fixed a problem with the 64-bit version of AcpiExec where the extended
8886 bit) address fields for the DSDT and FACS within the FADT were not being
8887 used, causing truncation of the upper 32-bits of these addresses. Lin
8891 ----------------------------------------
8892 19 October 2007. Summary of changes for version 20071019:
8894 1) ACPI CA Core Subsystem:
8896 Fixed a problem with the Alias operator when the target of the alias is a
8897 named ASL operator that opens a new scope -- Scope, Device,
8899 Processor, and ThermalZone. In these cases, any children of the original
8900 operator could not be accessed via the alias, potentially causing
8902 AE_NOT_FOUND exceptions. (BZ 9067)
8904 Fixed a problem with the Package operator where all named references were
8905 created as object references and left otherwise unresolved. According to
8907 ACPI specification, a Package can only contain Data Objects or references
8909 control methods. The implication is that named references to Data Objects
8910 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
8911 immediately upon package creation. This is the approach taken with this
8912 change. References to all other named objects (Methods, Devices, Scopes,
8913 etc.) are all now properly created as reference objects. (BZ 5328)
8915 Reverted a change to Notify handling that was introduced in version
8916 20070508. This version changed the Notify handling from asynchronous to
8917 fully synchronous (Device driver Notify handling with respect to the
8919 ASL operator). It was found that this change caused more problems than it
8920 solved and was removed by most users.
8922 Fixed a problem with the Increment and Decrement operators where the type
8924 the target object could be unexpectedly and incorrectly changed. (BZ 353)
8927 Fixed a problem with the Load and LoadTable operators where the table
8928 location within the namespace was ignored. Instead, the table was always
8929 loaded into the root or current scope. Lin Ming.
8931 Fixed a problem with the Load operator when loading a table from a buffer
8932 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
8934 Fixed a problem with the Debug object where a store of a DdbHandle
8936 object to the Debug object could cause a fault.
8938 Added a table checksum verification for the Load operator, in the case
8940 the load is from a buffer. (BZ 578).
8942 Implemented additional parameter validation for the LoadTable operator.
8944 length of the input strings SignatureString, OemIdString, and OemTableId
8946 now checked for maximum lengths. (BZ 582) Lin Ming.
8948 Example Code and Data Size: These are the sizes for the OS-independent
8949 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8950 debug version of the code includes the debug output trace mechanism and
8952 a much larger code and data size.
8955 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8956 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8958 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8959 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8962 2) iASL Compiler/Disassembler:
8964 Fixed a problem where if a single file was specified and the file did not
8965 exist, no error message was emitted. (Introduced with wildcard support in
8968 ----------------------------------------
8969 19 September 2007. Summary of changes for version 20070919:
8971 1) ACPI CA Core Subsystem:
8973 Designed and implemented new external interfaces to install and remove
8974 handlers for ACPI table-related events. Current events that are defined
8976 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
8977 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
8978 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
8980 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
8981 (acpi_serialized option on Linux) could cause some systems to hang during
8982 initialization. (Bob Moore) BZ 8171
8984 Fixed a problem where objects of certain types (Device, ThermalZone,
8985 Processor, PowerResource) can be not found if they are declared and
8986 referenced from within the same control method (Lin Ming) BZ 341
8988 Example Code and Data Size: These are the sizes for the OS-independent
8989 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8990 debug version of the code includes the debug output trace mechanism and
8992 a much larger code and data size.
8995 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
8996 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8998 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8999 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
9002 2) iASL Compiler/Disassembler:
9004 Implemented support to allow multiple files to be compiled/disassembled
9007 single invocation. This includes command line wildcard support for both
9009 Windows and Unix versions of the compiler. This feature simplifies the
9010 disassembly and compilation of multiple ACPI tables in a single
9013 ----------------------------------------
9014 08 May 2007. Summary of changes for version 20070508:
9016 1) ACPI CA Core Subsystem:
9018 Implemented a Microsoft compatibility design change for the handling of
9020 Notify AML operator. Previously, notify handlers were dispatched and
9021 executed completely asynchronously in a deferred thread. The new design
9022 still executes the notify handlers in a different thread, but the
9024 thread that executed the Notify() now waits at a synchronization point
9026 the notify handler to complete. Some machines depend on a synchronous
9028 operator in order to operate correctly.
9030 Implemented support to allow Package objects to be passed as method
9031 arguments to the external AcpiEvaluateObject interface. Previously, this
9032 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
9033 implemented since there were no reserved control methods that required it
9036 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
9038 contained invalid non-zero values in reserved fields could cause later
9039 failures because these fields have meaning in later revisions of the
9041 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
9043 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
9045 Fixed a problem where the Global Lock handle was not properly updated if
9047 thread that acquired the Global Lock via executing AML code then
9049 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
9053 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
9054 could be corrupted if the interrupt being removed was at the head of the
9055 list. Reported by Linn Crosetto.
9057 Example Code and Data Size: These are the sizes for the OS-independent
9058 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9059 debug version of the code includes the debug output trace mechanism and
9061 a much larger code and data size.
9064 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9065 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9067 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9068 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9070 ----------------------------------------
9071 20 March 2007. Summary of changes for version 20070320:
9073 1) ACPI CA Core Subsystem:
9075 Implemented a change to the order of interpretation and evaluation of AML
9076 operand objects within the AML interpreter. The interpreter now evaluates
9077 operands in the order that they appear in the AML stream (and the
9078 corresponding ASL code), instead of in the reverse order (after the
9080 operand list has been parsed). The previous behavior caused several
9082 incompatibilities with the Microsoft AML interpreter as well as being
9083 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
9085 Implemented a change to the ACPI Global Lock support. All interfaces to
9087 global lock now allow the same thread to acquire the lock multiple times.
9088 This affects the AcpiAcquireGlobalLock external interface to the global
9090 as well as the internal use of the global lock to support AML fields -- a
9091 control method that is holding the global lock can now simultaneously
9093 AML fields that require global lock protection. Previously, in both
9095 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
9097 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
9098 Controller. There is no change to the behavior of the AML Acquire
9100 as this can already be used to acquire a mutex multiple times by the same
9101 thread. BZ 8066. With assistance from Alexey Starikovskiy.
9103 Fixed a problem where invalid objects could be referenced in the AML
9104 Interpreter after error conditions. During operand evaluation, ensure
9106 the internal "Return Object" field is cleared on error and only valid
9107 pointers are stored there. Caused occasional access to deleted objects
9109 resulted in "large reference count" warning messages. Valery Podrezov.
9111 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
9113 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
9116 Fixed an internal problem with the handling of result objects on the
9117 interpreter result stack. BZ 7872. Valery Podrezov.
9119 Removed obsolete code that handled the case where AML_NAME_OP is the
9121 of a reference (Reference.Opcode). This code was no longer necessary. BZ
9122 7874. Valery Podrezov.
9124 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
9127 remnant from the previously discontinued 16-bit support.
9129 Example Code and Data Size: These are the sizes for the OS-independent
9130 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9131 debug version of the code includes the debug output trace mechanism and
9133 a much larger code and data size.
9136 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9137 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9139 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9140 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9142 ----------------------------------------
9143 26 January 2007. Summary of changes for version 20070126:
9145 1) ACPI CA Core Subsystem:
9147 Added the 2007 copyright to all module headers and signons. This affects
9148 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9151 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
9152 during a table load. A bad pointer was passed in the case where the DSDT
9154 overridden, causing a fault in this case.
9156 Example Code and Data Size: These are the sizes for the OS-independent
9157 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9158 debug version of the code includes the debug output trace mechanism and
9160 a much larger code and data size.
9163 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9164 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9166 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9167 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9169 ----------------------------------------
9170 15 December 2006. Summary of changes for version 20061215:
9172 1) ACPI CA Core Subsystem:
9174 Support for 16-bit ACPICA has been completely removed since it is no
9176 necessary and it clutters the code. All 16-bit macros, types, and
9177 conditional compiles have been removed, cleaning up and simplifying the
9179 across the entire subsystem. DOS support is no longer needed since the
9180 bootable Linux firmware kit is now available.
9182 The handler for the Global Lock is now removed during AcpiTerminate to
9183 enable a clean subsystem restart, via the implementation of the
9184 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
9187 Implemented enhancements to the multithreading support within the
9189 to enable improved multithreading debugging and evaluation of the
9193 Debugger: Enhanced the Statistics/Memory command to emit the total
9195 memory used during the execution, as well as the maximum memory consumed
9197 each of the various object types. (Valery Podrezov)
9199 Example Code and Data Size: These are the sizes for the OS-independent
9200 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9201 debug version of the code includes the debug output trace mechanism and
9203 a much larger code and data size.
9206 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9207 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9209 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9210 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9213 2) iASL Compiler/Disassembler and Tools:
9215 AcpiExec: Implemented a new option (-m) to display full memory use
9216 statistics upon subsystem/program termination. (Valery Podrezov)
9218 ----------------------------------------
9219 09 November 2006. Summary of changes for version 20061109:
9221 1) ACPI CA Core Subsystem:
9223 Optimized the Load ASL operator in the case where the source operand is
9225 operation region. Simply map the operation region memory, instead of
9226 performing a bytewise read. (Region must be of type SystemMemory, see
9229 Fixed the Load ASL operator for the case where the source operand is a
9230 region field. A buffer object is also allowed as the source operand. BZ
9233 Fixed a problem where the Load ASL operator allowed the source operand to
9235 an operation region of any type. It is now restricted to regions of type
9236 SystemMemory, as per the ACPI specification. BZ 481
9238 Additional cleanup and optimizations for the new Table Manager code.
9240 AcpiEnable will now fail if all of the required ACPI tables are not
9242 (FADT, FACS, DSDT). BZ 477
9244 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
9246 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
9247 manually optimized to be aligned and will not work if it is byte-packed.
9249 Example Code and Data Size: These are the sizes for the OS-independent
9250 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9251 debug version of the code includes the debug output trace mechanism and
9253 a much larger code and data size.
9256 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9257 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9259 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9260 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9263 2) iASL Compiler/Disassembler and Tools:
9265 Fixed a problem where the presence of the _OSI predefined control method
9266 within complex expressions could cause an internal compiler error.
9268 AcpiExec: Implemented full region support for multiple address spaces.
9269 SpaceId is now part of the REGION object. BZ 429
9271 ----------------------------------------
9272 11 October 2006. Summary of changes for version 20061011:
9274 1) ACPI CA Core Subsystem:
9276 Completed an AML interpreter performance enhancement for control method
9277 execution. Previously a 2-pass parse/execution, control methods are now
9278 completely parsed and executed in a single pass. This improves overall
9279 interpreter performance by ~25%, reduces code size, and reduces CPU stack
9280 use. (Valery Podrezov + interpreter changes in version 20051202 that
9281 eliminated namespace loading during the pass one parse.)
9283 Implemented _CID support for PCI Root Bridge detection. If the _HID does
9285 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
9287 obtained and also checked for an ID match.
9289 Implemented additional support for the PCI _ADR execution: upsearch until
9291 device scope is found before executing _ADR. This allows PCI_Config
9292 operation regions to be declared locally within control methods
9296 Fixed a problem with a possible race condition between threads executing
9297 AcpiWalkNamespace and the AML interpreter. This condition was removed by
9298 modifying AcpiWalkNamespace to (by default) ignore all temporary
9300 entries created during any concurrent control method execution. An
9301 additional namespace race condition is known to exist between
9302 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
9305 Restructured the AML ParseLoop function, breaking it into several
9306 subfunctions in order to reduce CPU stack use and improve
9310 AcpiGetHandle: Fix for parameter validation to detect invalid
9312 of prefix handle and pathname. BZ 478
9314 Example Code and Data Size: These are the sizes for the OS-independent
9315 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9316 debug version of the code includes the debug output trace mechanism and
9318 a much larger code and data size.
9321 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9322 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9324 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9325 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9327 2) iASL Compiler/Disassembler and Tools:
9329 Ported the -g option (get local ACPI tables) to the new ACPICA Table
9331 to restore original behavior.
9333 ----------------------------------------
9334 27 September 2006. Summary of changes for version 20060927:
9336 1) ACPI CA Core Subsystem:
9338 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
9339 These functions now use a spinlock for mutual exclusion and the interrupt
9340 level indication flag is not needed.
9342 Fixed a problem with the Global Lock where the lock could appear to be
9343 obtained before it is actually obtained. The global lock semaphore was
9344 inadvertently created with one unit instead of zero units. (BZ 464)
9348 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
9350 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
9352 Example Code and Data Size: These are the sizes for the OS-independent
9353 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9354 debug version of the code includes the debug output trace mechanism and
9356 a much larger code and data size.
9359 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9360 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9362 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9363 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9366 2) iASL Compiler/Disassembler and Tools:
9368 Fixed a compilation problem with the pre-defined Resource Descriptor
9370 names where an "object does not exist" error could be incorrectly
9372 if the parent ResourceTemplate pathname places the template within a
9373 different namespace scope than the current scope. (BZ 7212)
9375 Fixed a problem where the compiler could hang after syntax errors
9377 in an ElseIf construct. (BZ 453)
9379 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
9380 operator. An incorrect output filename was produced when this parameter
9382 a null string (""). Now, the original input filename is used as the AML
9383 output filename, with an ".aml" extension.
9385 Implemented a generic batch command mode for the AcpiExec utility
9387 any AML debugger command) (Valery Podrezov).
9389 ----------------------------------------
9390 12 September 2006. Summary of changes for version 20060912:
9392 1) ACPI CA Core Subsystem:
9394 Enhanced the implementation of the "serialized mode" of the interpreter
9395 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9396 specified, instead of creating a serialization semaphore per control
9398 the interpreter lock is simply no longer released before a blocking
9399 operation during control method execution. This effectively makes the AML
9400 Interpreter single-threaded. The overhead of a semaphore per-method is
9403 Fixed a regression where an error was no longer emitted if a control
9405 attempts to create 2 objects of the same name. This once again returns
9406 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9408 will dynamically serialize the control method to possible prevent future
9411 Integrated a fix for a problem with PCI Express HID detection in the PCI
9412 Config Space setup procedure. (BZ 7145)
9414 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9415 AcpiHwInitialize function - the FADT registers are now validated when the
9418 Added two new warnings during FADT verification - 1) if the FADT is
9420 than the largest known FADT version, and 2) if there is a mismatch
9423 32-bit block address and the 64-bit X counterpart (when both are non-
9426 Example Code and Data Size: These are the sizes for the OS-independent
9427 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9428 debug version of the code includes the debug output trace mechanism and
9430 a much larger code and data size.
9433 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9434 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9436 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9437 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9440 2) iASL Compiler/Disassembler and Tools:
9442 Fixed a problem with the implementation of the Switch() operator where
9444 temporary variable was declared too close to the actual Switch, instead
9446 at method level. This could cause a problem if the Switch() operator is
9447 within a while loop, causing an error on the second iteration. (BZ 460)
9449 Disassembler - fix for error emitted for unknown type for target of scope
9450 operator. Now, ignore it and continue.
9452 Disassembly of an FADT now verifies the input FADT and reports any errors
9453 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
9455 Disassembly of raw data buffers with byte initialization data now
9457 each output line with the current buffer offset.
9459 Disassembly of ASF! table now includes all variable-length data fields at
9460 the end of some of the subtables.
9462 The disassembler now emits a comment if a buffer appears to be a
9463 ResourceTemplate, but cannot be disassembled as such because the EndTag
9465 not appear at the very end of the buffer.
9467 AcpiExec - Added the "-t" command line option to enable the serialized
9469 of the AML interpreter.
9471 ----------------------------------------
9472 31 August 2006. Summary of changes for version 20060831:
9474 1) ACPI CA Core Subsystem:
9476 Miscellaneous fixes for the Table Manager:
9477 - Correctly initialize internal common FADT for all 64-bit "X" fields
9478 - Fixed a couple table mapping issues during table load
9479 - Fixed a couple alignment issues for IA64
9480 - Initialize input array to zero in AcpiInitializeTables
9481 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
9484 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
9486 immediately disabled to prevent the waking GPE from firing again and to
9487 prevent other wake GPEs from interrupting the wake process.
9489 Added the AcpiGpeCount global that tracks the number of processed GPEs,
9491 be used for debugging systems with a large number of ACPI interrupts.
9493 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
9494 both the ACPICA headers and the disassembler.
9496 Example Code and Data Size: These are the sizes for the OS-independent
9497 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9498 debug version of the code includes the debug output trace mechanism and
9500 a much larger code and data size.
9503 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9504 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9506 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9507 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9510 2) iASL Compiler/Disassembler and Tools:
9512 Disassembler support for the DMAR ACPI table.
9514 ----------------------------------------
9515 23 August 2006. Summary of changes for version 20060823:
9517 1) ACPI CA Core Subsystem:
9519 The Table Manager component has been completely redesigned and
9520 reimplemented. The new design is much simpler, and reduces the overall
9522 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
9524 now possible to obtain the ACPI tables very early during kernel
9525 initialization, even before dynamic memory management is initialized.
9526 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
9528 Obsolete ACPICA interfaces:
9530 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
9533 - AcpiLoadTable: Not needed.
9534 - AcpiUnloadTable: Not needed.
9536 New ACPICA interfaces:
9538 - AcpiInitializeTables: Must be called before the table manager can be
9540 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
9541 allocated memory after it becomes available.
9542 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
9546 Other ACPICA changes:
9548 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
9550 AcpiOsUnmapMemory to free this mapping.
9551 - AcpiGetTable returns the actual mapped table. The mapping is managed
9552 internally and must not be deleted by the caller. Use of this interface
9553 causes no additional dynamic memory allocation.
9554 - AcpiFindRootPointer: Support for physical addressing has been
9556 it appeared to be unused.
9557 - The interface to AcpiOsMapMemory has changed to be consistent with the
9558 other allocation interfaces.
9559 - The interface to AcpiOsGetRootPointer has changed to eliminate
9562 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
9564 bit platforms. Was previously 64 bits on all platforms.
9565 - The interface to the ACPI Global Lock acquire/release macros have
9567 slightly since ACPICA no longer keeps a local copy of the FACS with a
9568 constructed pointer to the actual global lock.
9570 Porting to the new table manager:
9572 - AcpiInitializeTables: Must be called once, and can be called anytime
9573 during the OS initialization process. It allows the host to specify an
9575 of memory to be used to store the internal version of the RSDT/XSDT (root
9576 table). This allows the host to access ACPI tables before memory
9578 is initialized and running.
9579 - AcpiReallocateRootTable: Can be called after memory management is
9581 to copy the root table to a dynamically allocated array, freeing up the
9582 scratch memory specified in the call to AcpiInitializeTables.
9583 - AcpiSubsystemInitialize: This existing interface is independent of the
9584 Table Manager, and does not have to be called before the Table Manager
9586 be used, it only must be called before the rest of ACPICA can be used.
9587 - ACPI Tables: Some changes have been made to the names and structure of
9589 actbl.h and actbl1.h header files and may require changes to existing
9591 For example, bitfields have been completely removed because of their lack
9593 portability across C compilers.
9594 - Update interfaces to the Global Lock acquire/release macros if local
9595 versions are used. (see acwin.h)
9597 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
9601 Example Code and Data Size: These are the sizes for the OS-independent
9602 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9603 debug version of the code includes the debug output trace mechanism and
9605 a much larger code and data size.
9608 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9609 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9611 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9612 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9615 2) iASL Compiler/Disassembler and Tools:
9617 No changes for this release.
9619 ----------------------------------------
9620 21 July 2006. Summary of changes for version 20060721:
9622 1) ACPI CA Core Subsystem:
9624 The full source code for the ASL test suite used to validate the iASL
9625 compiler and the ACPICA core subsystem is being released with the ACPICA
9626 source for the first time. The source is contained in a separate package
9628 consists of over 1100 files that exercise all ASL/AML operators. The
9630 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9634 Completed a new design and implementation for support of the ACPI Global
9635 Lock. On the OS side, the global lock is now treated as a standard AML
9636 mutex. Previously, multiple OS threads could "acquire" the global lock
9637 simultaneously. However, this could cause the BIOS to be starved out of
9639 lock - especially in cases such as the Embedded Controller driver where
9640 there is a tight coupling between the OS and the BIOS.
9642 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9643 The Global Lock interrupt handler no longer queues the execution of a
9644 separate thread to signal the global lock semaphore. Instead, the
9646 is signaled directly from the interrupt handler.
9648 Implemented support within the AML interpreter for package objects that
9649 contain a larger AML length (package list length) than the package
9651 count. In this case, the length of the package is truncated to match the
9652 package element count. Some BIOS code apparently modifies the package
9654 on the fly, and this change supports this behavior. Provides
9656 with the MS AML interpreter. (With assistance from Fiodor Suietov)
9658 Implemented a temporary fix for the BankValue parameter of a Bank Field
9660 support all constant values, now including the Zero and One opcodes.
9661 Evaluation of this parameter must eventually be converted to a full
9663 evaluation. A not-implemented error is now returned (temporarily) for
9665 constant values for this parameter.
9667 Fixed problem reports (Fiodor Suietov) integrated:
9668 - Fix for premature object deletion after CopyObject on Operation Region
9672 Example Code and Data Size: These are the sizes for the OS-independent
9673 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9674 debug version of the code includes the debug output trace mechanism and
9676 a much larger code and data size.
9679 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9680 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9682 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9683 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9686 2) iASL Compiler/Disassembler and Tools:
9688 No changes for this release.
9690 ----------------------------------------
9691 07 July 2006. Summary of changes for version 20060707:
9693 1) ACPI CA Core Subsystem:
9695 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9696 that do not allow the initialization of address pointers within packed
9697 structures - even though the hardware itself may support misaligned
9698 transfers. Some of the debug data structures are packed by default to
9701 Added an error message for the case where AcpiOsGetThreadId() returns
9703 A non-zero value is required by the core ACPICA code to ensure the proper
9704 operation of AML mutexes and recursive control methods.
9706 The DSDT is now the only ACPI table that determines whether the AML
9707 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9709 the hooks for per-table 32/64 switching have been removed from the code.
9711 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9713 Fixed a possible leak of an OwnerID in the error path of
9714 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9715 deletion to a single place in AcpiTbUninstallTable to correct possible
9717 when using the AcpiTbDeleteTablesByType interface (with assistance from
9720 Fixed a problem with Serialized control methods where the semaphore
9721 associated with the method could be over-signaled after multiple method
9724 Fixed two issues with the locking of the internal namespace data
9726 Both the Unload() operator and AcpiUnloadTable interface now lock the
9727 namespace during the namespace deletion associated with the table unload
9728 (with assistance from Linn Crosetto.)
9730 Fixed problem reports (Valery Podrezov) integrated:
9731 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9733 Fixed problem reports (Fiodor Suietov) integrated:
9734 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9735 - On Address Space handler deletion, needless deactivation call (BZ 374)
9736 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9738 - Possible memory leak, Notify sub-objects of Processor, Power,
9741 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9742 - Minimum Length of RSDT should be validated (BZ 379)
9743 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9745 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9749 Example Code and Data Size: These are the sizes for the OS-independent
9750 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9751 debug version of the code includes the debug output trace mechanism and
9753 a much larger code and data size.
9756 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9757 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9759 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9760 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9763 2) iASL Compiler/Disassembler and Tools:
9765 Fixed problem reports:
9766 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9769 ----------------------------------------
9770 23 June 2006. Summary of changes for version 20060623:
9772 1) ACPI CA Core Subsystem:
9774 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9775 allows the type to be customized to the host OS for improved efficiency
9776 (since a spinlock is usually a very small object.)
9778 Implemented support for "ignored" bits in the ACPI registers. According
9780 the ACPI specification, these bits should be preserved when writing the
9781 registers via a read/modify/write cycle. There are 3 bits preserved in
9783 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9785 Implemented the initial deployment of new OSL mutex interfaces. Since
9787 host operating systems have separate mutex and semaphore objects, this
9788 feature was requested. The base code now uses mutexes (and the new mutex
9789 interfaces) wherever a binary semaphore was used previously. However, for
9790 the current release, the mutex interfaces are defined as macros to map
9792 to the existing semaphore interfaces. Therefore, no OSL changes are
9794 at this time. (See acpiosxf.h)
9796 Fixed several problems with the support for the control method SyncLevel
9797 parameter. The SyncLevel now works according to the ACPI specification
9799 in concert with the Mutex SyncLevel parameter, since the current
9801 is a property of the executing thread. Mutual exclusion for control
9803 is now implemented with a mutex instead of a semaphore.
9805 Fixed three instances of the use of the C shift operator in the bitfield
9806 support code (exfldio.c) to avoid the use of a shift value larger than
9808 target data width. The behavior of C compilers is undefined in this case
9810 can cause unpredictable results, and therefore the case must be detected
9812 avoided. (Fiodor Suietov)
9814 Added an info message whenever an SSDT or OEM table is loaded dynamically
9815 via the Load() or LoadTable() ASL operators. This should improve
9817 capability since it will show exactly what tables have been loaded
9819 the tables present in the RSDT/XSDT.)
9821 Example Code and Data Size: These are the sizes for the OS-independent
9822 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9823 debug version of the code includes the debug output trace mechanism and
9825 a much larger code and data size.
9828 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9829 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9831 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9832 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9835 2) iASL Compiler/Disassembler and Tools:
9837 No changes for this release.
9839 ----------------------------------------
9840 08 June 2006. Summary of changes for version 20060608:
9842 1) ACPI CA Core Subsystem:
9844 Converted the locking mutex used for the ACPI hardware to a spinlock.
9846 change should eliminate all problems caused by attempting to acquire a
9847 semaphore at interrupt level, and it means that all ACPICA external
9848 interfaces that directly access the ACPI hardware can be safely called
9850 interrupt level. OSL code that implements the semaphore interfaces should
9852 able to eliminate any workarounds for being called at interrupt level.
9854 Fixed a regression introduced in 20060526 where the ACPI device
9855 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9857 did not have an optional _INI method.
9859 Fixed an IndexField issue where a write to the Data Register should be
9860 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9864 Fixed problem reports (Valery Podrezov) integrated:
9865 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9867 Fixed problem reports (Fiodor Suietov) integrated:
9868 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9870 Removed four global mutexes that were obsolete and were no longer being
9873 Example Code and Data Size: These are the sizes for the OS-independent
9874 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9875 debug version of the code includes the debug output trace mechanism and
9877 a much larger code and data size.
9880 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9881 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9883 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9884 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9887 2) iASL Compiler/Disassembler and Tools:
9889 Fixed a fault when using -g option (get tables from registry) on Windows
9892 Fixed problem reports integrated:
9893 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9894 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9896 - Global table revision override (-r) is ignored (BZ 413)
9898 ----------------------------------------
9899 26 May 2006. Summary of changes for version 20060526:
9901 1) ACPI CA Core Subsystem:
9903 Restructured, flattened, and simplified the internal interfaces for
9904 namespace object evaluation - resulting in smaller code, less CPU stack
9906 and fewer interfaces. (With assistance from Mikhail Kouzmich)
9908 Fixed a problem with the CopyObject operator where the first parameter
9910 not typed correctly for the parser, interpreter, compiler, and
9912 Caused various errors and unexpected behavior.
9914 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
9915 produced incorrect results with some C compilers. Since the behavior of C
9916 compilers when the shift value is larger than the datatype width is
9917 apparently not well defined, the interpreter now detects this condition
9919 simply returns zero as expected in all such cases. (BZ 395)
9921 Fixed problem reports (Valery Podrezov) integrated:
9922 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
9923 - Allow interpreter to handle nested method declarations (BZ 5361)
9925 Fixed problem reports (Fiodor Suietov) integrated:
9926 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
9928 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
9930 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
9931 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
9932 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
9933 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
9934 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
9935 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
9936 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
9938 - Status of the Global Initialization Handler call not used (BZ 366)
9939 - Incorrect object parameter to Global Initialization Handler (BZ 367)
9941 Example Code and Data Size: These are the sizes for the OS-independent
9942 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9943 debug version of the code includes the debug output trace mechanism and
9945 a much larger code and data size.
9948 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9949 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9951 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9952 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9955 2) iASL Compiler/Disassembler and Tools:
9957 Modified the parser to allow the names IO, DMA, and IRQ to be used as
9958 namespace identifiers with no collision with existing resource descriptor
9959 macro names. This provides compatibility with other ASL compilers and is
9960 most useful for disassembly/recompilation of existing tables without
9962 errors. (With assistance from Thomas Renninger)
9964 Disassembler: fixed an incorrect disassembly problem with the
9965 DataTableRegion and CopyObject operators. Fixed a possible fault during
9966 disassembly of some Alias operators.
9968 ----------------------------------------
9969 12 May 2006. Summary of changes for version 20060512:
9971 1) ACPI CA Core Subsystem:
9973 Replaced the AcpiOsQueueForExecution interface with a new interface named
9974 AcpiOsExecute. The major difference is that the new interface does not
9976 a Priority parameter, this appeared to be useless and has been replaced
9979 Type parameter. The Type tells the host what type of execution is being
9980 requested, such as global lock handler, notify handler, GPE handler, etc.
9981 This allows the host to queue and execute the request as appropriate for
9983 request type, possibly using different work queues and different
9985 for the various request types. This enables fixes for multithreading
9986 deadlock problems such as BZ #5534, and will require changes to all
9988 OS interface layers. (Alexey Starikovskiy and Bob Moore)
9990 Fixed a possible memory leak associated with the support for the so-
9992 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
9995 Fixed a problem with the Load() operator where a table load from an
9996 operation region could overwrite an internal table buffer by up to 7
9998 and cause alignment faults on IPF systems. (With assistance from Luming
10001 Example Code and Data Size: These are the sizes for the OS-independent
10002 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10003 debug version of the code includes the debug output trace mechanism and
10005 a much larger code and data size.
10008 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10009 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10011 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
10012 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
10016 2) iASL Compiler/Disassembler and Tools:
10018 Disassembler: Implemented support to cross reference the internal
10020 and automatically generate ASL External() statements for symbols not
10022 within the current table being disassembled. This will simplify the
10023 disassembly and recompilation of interdependent tables such as SSDTs
10025 these statements will no longer have to be added manually.
10027 Disassembler: Implemented experimental support to automatically detect
10028 invocations of external control methods and generate appropriate
10030 statements. This is problematic because the AML cannot be correctly
10032 until the number of arguments for each control method is known.
10034 standalone method invocations and invocations as the source operand of a
10035 Store() statement are supported.
10037 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
10038 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
10039 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
10040 more readable and likely closer to the original ASL source.
10042 ----------------------------------------
10043 21 April 2006. Summary of changes for version 20060421:
10045 1) ACPI CA Core Subsystem:
10047 Removed a device initialization optimization introduced in 20051216 where
10048 the _STA method was not run unless an _INI was also present for the same
10049 device. This optimization could cause problems because it could allow
10051 methods to be run within a not-present device subtree. (If a not-present
10052 device had no _INI, _STA would not be run, the not-present status would
10054 be discovered, and the children of the device would be incorrectly
10057 Implemented a new _STA optimization where namespace subtrees that do not
10058 contain _INI are identified and ignored during device initialization.
10059 Selectively running _STA can significantly improve boot time on large
10060 machines (with assistance from Len Brown.)
10062 Implemented support for the device initialization case where the returned
10063 _STA flags indicate a device not-present but functioning. In this case,
10065 is not run, but the device children are examined for presence, as per the
10066 ACPI specification.
10068 Implemented an additional change to the IndexField support in order to
10069 conform to MS behavior. The value written to the Index Register is not
10070 simply a byte offset, it is a byte offset in units of the access width of
10071 the parent Index Field. (Fiodor Suietov)
10073 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
10074 interface is called during the creation of all AML operation regions, and
10075 allows the host OS to exert control over what addresses it will allow the
10076 AML code to access. Operation Regions whose addresses are disallowed will
10077 cause a runtime exception when they are actually accessed (will not
10079 or abort table loading.) See oswinxf or osunixxf for an example
10082 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
10083 interface allows the host OS to match the various "optional"
10084 interface/behavior strings for the _OSI predefined control method as
10085 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
10086 for an example implementation.
10088 Restructured and corrected various problems in the exception handling
10090 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
10091 (with assistance from Takayoshi Kochi.)
10093 Modified the Linux source converter to ignore quoted string literals
10095 converting identifiers from mixed to lower case. This will correct
10097 with the disassembler and other areas where such strings must not be
10100 The ACPI_FUNCTION_* macros no longer require quotes around the function
10101 name. This allows the Linux source converter to convert the names, now
10103 the converter ignores quoted strings.
10105 Example Code and Data Size: These are the sizes for the OS-independent
10106 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10107 debug version of the code includes the debug output trace mechanism and
10109 a much larger code and data size.
10113 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10114 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10116 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10117 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10120 2) iASL Compiler/Disassembler and Tools:
10122 Implemented 3 new warnings for iASL, and implemented multiple warning
10126 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
10128 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
10129 check for the possible timeout, a warning is issued.
10131 2) Useless operators: If an ASL operator does not specify an optional
10133 operand and it also does not use the function return value from the
10134 operator, a warning is issued since the operator effectively does
10137 3) Unreferenced objects: If a namespace object is created, but never
10138 referenced, a warning is issued. This is a warning level 2 since there
10140 cases where this is ok, such as when a secondary table is loaded that
10142 the unreferenced objects. Even so, care is taken to only flag objects
10144 don't look like they will ever be used. For example, the reserved methods
10145 (starting with an underscore) are usually not referenced because it is
10146 expected that the OS will invoke them.
10148 ----------------------------------------
10149 31 March 2006. Summary of changes for version 20060331:
10151 1) ACPI CA Core Subsystem:
10153 Implemented header file support for the following additional ACPI tables:
10154 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
10156 all current and known ACPI tables are now defined in the ACPICA headers
10158 are available for use by device drivers and other software.
10160 Implemented support to allow tables that contain ACPI names with invalid
10161 characters to be loaded. Previously, this would cause the table load to
10162 fail, but since there are several known cases of such tables on existing
10163 machines, this change was made to enable ACPI support for them. Also,
10165 matches the behavior of the Microsoft ACPI implementation.
10167 Fixed a couple regressions introduced during the memory optimization in
10169 20060317 release. The namespace node definition required additional
10170 reorganization and an internal datatype that had been changed to 8-bit
10172 restored to 32-bit. (Valery Podrezov)
10174 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
10175 could be passed through to AcpiOsReleaseObject which is unexpected. Such
10176 null pointers are now trapped and ignored, matching the behavior of the
10177 previous implementation before the deployment of AcpiOsReleaseObject.
10178 (Valery Podrezov, Fiodor Suietov)
10180 Fixed a memory mapping leak during the deletion of a SystemMemory
10182 region where a cached memory mapping was not deleted. This became a
10183 noticeable problem for operation regions that are defined within
10185 used control methods. (Dana Meyers)
10187 Reorganized the ACPI table header files into two main files: one for the
10188 ACPI tables consumed by the ACPICA core, and another for the
10190 ACPI tables that are consumed by the drivers and other software. The
10192 FADT definitions were merged into one common section and three different
10193 tables (ACPI 1.0, 1.0+, and 2.0)
10195 Example Code and Data Size: These are the sizes for the OS-independent
10196 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10197 debug version of the code includes the debug output trace mechanism and
10199 a much larger code and data size.
10202 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10203 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10205 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10206 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10209 2) iASL Compiler/Disassembler and Tools:
10211 Disassembler: Implemented support to decode and format all non-AML ACPI
10212 tables (tables other than DSDTs and SSDTs.) This includes the new tables
10213 added to the ACPICA headers, therefore all current and known ACPI tables
10217 Disassembler: The change to allow ACPI names with invalid characters also
10218 enables the disassembly of such tables. Invalid characters within names
10220 changed to '*' to make the name printable; the iASL compiler will still
10221 generate an error for such names, however, since this is an invalid ACPI
10224 Implemented an option for AcpiXtract (-a) to extract all tables found in
10226 input file. The default invocation extracts only the DSDTs and SSDTs.
10228 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
10229 makefile for the AcpiXtract utility.
10231 ----------------------------------------
10232 17 March 2006. Summary of changes for version 20060317:
10234 1) ACPI CA Core Subsystem:
10236 Implemented the use of a cache object for all internal namespace nodes.
10237 Since there are about 1000 static nodes in a typical system, this will
10238 decrease memory use for cache implementations that minimize per-
10240 overhead (such as a slab allocator.)
10242 Removed the reference count mechanism for internal namespace nodes, since
10244 was deemed unnecessary. This reduces the size of each namespace node by
10245 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
10247 and 32 bytes for the 64-bit case.
10249 Optimized several internal data structures to reduce object size on 64-
10251 platforms by packing data within the 64-bit alignment. This includes the
10252 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
10253 instances corresponding to the namespace objects.
10255 Added two new strings for the predefined _OSI method: "Windows 2001.1
10257 and "Windows 2006".
10259 Split the allocation tracking mechanism out to a separate file, from
10260 utalloc.c to uttrack.c. This mechanism appears to be only useful for
10261 application-level code. Kernels may wish to not include uttrack.c in
10264 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
10266 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
10269 Code and Data Size: These are the sizes for the acpica.lib produced by
10271 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10273 driver or OSPM code. The debug version of the code includes the debug
10275 trace mechanism and has a much larger code and data size. Note that these
10276 values will vary depending on the efficiency of the compiler and the
10277 compiler options used during generation.
10280 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10281 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10283 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10284 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10287 2) iASL Compiler/Disassembler and Tools:
10289 Implemented an ANSI C version of the acpixtract utility. This version
10291 automatically extract the DSDT and all SSDTs from the input acpidump text
10292 file and dump the binary output to separate files. It can also display a
10293 summary of the input file including the headers for each table found and
10294 will extract any single ACPI table, with any signature. (See
10295 source/tools/acpixtract)
10297 ----------------------------------------
10298 10 March 2006. Summary of changes for version 20060310:
10300 1) ACPI CA Core Subsystem:
10302 Tagged all external interfaces to the subsystem with the new
10303 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
10305 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
10306 macro. The default definition is NULL.
10308 Added the ACPI_THREAD_ID type for the return value from
10310 This allows the host to define this as necessary to simplify kernel
10311 integration. The default definition is ACPI_NATIVE_UINT.
10313 Fixed two interpreter problems related to error processing, the deletion
10315 objects, and placing invalid pointers onto the internal operator result
10316 stack. BZ 6028, 6151 (Valery Podrezov)
10318 Increased the reference count threshold where a warning is emitted for
10320 reference counts in order to eliminate unnecessary warnings on systems
10322 large namespaces (especially 64-bit.) Increased the value from 0x400 to
10325 Due to universal disagreement as to the meaning of the 'c' in the
10327 function, the ACPI_MEM_CALLOCATE macro has been renamed to
10328 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
10329 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
10332 Code and Data Size: These are the sizes for the acpica.lib produced by
10334 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10336 driver or OSPM code. The debug version of the code includes the debug
10338 trace mechanism and has a much larger code and data size. Note that these
10339 values will vary depending on the efficiency of the compiler and the
10340 compiler options used during generation.
10343 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10344 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10346 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10347 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10350 2) iASL Compiler/Disassembler:
10352 Disassembler: implemented support for symbolic resource descriptor
10353 references. If a CreateXxxxField operator references a fixed offset
10356 resource descriptor, a name is assigned to the descriptor and the offset
10358 translated to the appropriate resource tag and pathname. The addition of
10359 this support brings the disassembled code very close to the original ASL
10360 source code and helps eliminate run-time errors when the disassembled
10362 is modified (and recompiled) in such a way as to invalidate the original
10365 Implemented support for a Descriptor Name as the last parameter to the
10367 Register() macro. This parameter was inadvertently left out of the ACPI
10368 specification, and will be added for ACPI 3.0b.
10370 Fixed a problem where the use of the "_OSI" string (versus the full path
10371 "\_OSI") caused an internal compiler error. ("No back ptr to op")
10373 Fixed a problem with the error message that occurs when an invalid string
10375 used for a _HID object (such as one with an embedded asterisk:
10377 The correct message is now displayed.
10379 ----------------------------------------
10380 17 February 2006. Summary of changes for version 20060217:
10382 1) ACPI CA Core Subsystem:
10384 Implemented a change to the IndexField support to match the behavior of
10386 Microsoft AML interpreter. The value written to the Index register is now
10388 byte offset, no longer an index based upon the width of the Data
10390 This should fix IndexField problems seen on some machines where the Data
10391 register is not exactly one byte wide. The ACPI specification will be
10392 clarified on this point.
10394 Fixed a problem where several resource descriptor types could overrun the
10395 internal descriptor buffer due to size miscalculation: VendorShort,
10396 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10397 affect all platforms.
10399 Fixed a problem where individual resource descriptors were misaligned
10401 the internal buffer, causing alignment faults on IA64 platforms.
10403 Code and Data Size: These are the sizes for the acpica.lib produced by
10405 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10407 driver or OSPM code. The debug version of the code includes the debug
10409 trace mechanism and has a much larger code and data size. Note that these
10410 values will vary depending on the efficiency of the compiler and the
10411 compiler options used during generation.
10414 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10415 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10417 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10418 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10421 2) iASL Compiler/Disassembler:
10423 Implemented support for new reserved names: _WDG and _WED are Microsoft
10424 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10425 defined method (Throttling Depth Limit.)
10427 Fixed a problem where a zero-length VendorShort or VendorLong resource
10428 descriptor was incorrectly emitted as a descriptor of length one.
10430 ----------------------------------------
10431 10 February 2006. Summary of changes for version 20060210:
10433 1) ACPI CA Core Subsystem:
10435 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10436 normal execution. These became apparent after the conversion from
10439 Fixed a problem where the CreateField operator could hang if the BitIndex
10441 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10443 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
10444 failed with an exception. This also fixes a couple of related RefOf and
10445 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
10447 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
10449 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
10453 Implemented a memory cleanup at the end of the execution of each
10455 of an AML While() loop, preventing the accumulation of outstanding
10457 (Valery Podrezov, BZ 5427)
10459 Eliminated a chunk of duplicate code in the object resolution code.
10463 Fixed several warnings during the 64-bit code generation.
10465 The AcpiSrc source code conversion tool now inserts one line of
10467 after an if() statement that is followed immediately by a comment,
10469 readability of the Linux code.
10471 Code and Data Size: The current and previous library sizes for the core
10472 subsystem are shown below. These are the code and data sizes for the
10473 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10475 values do not include any ACPI driver or OSPM code. The debug version of
10477 code includes the debug output trace mechanism and has a much larger code
10478 and data size. Note that these values will vary depending on the
10480 of the compiler and the compiler options used during generation.
10483 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10484 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10486 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10487 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10490 2) iASL Compiler/Disassembler:
10492 Fixed a problem with the disassembly of a BankField operator with a
10494 expression for the BankValue parameter.
10496 ----------------------------------------
10497 27 January 2006. Summary of changes for version 20060127:
10499 1) ACPI CA Core Subsystem:
10501 Implemented support in the Resource Manager to allow unresolved
10503 references within resource package objects for the _PRT method. This
10505 is in addition to the previously implemented unresolved reference support
10506 within the AML parser. If the interpreter slack mode is enabled, these
10507 unresolved references will be passed through to the caller as a NULL
10511 Implemented and deployed new macros and functions for error and warning
10512 messages across the subsystem. These macros are simpler and generate less
10513 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
10514 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
10515 macros remain defined to allow ACPI drivers time to migrate to the new
10518 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
10520 Acquire/Release Lock OSL interfaces.
10522 Fixed a problem where Alias ASL operators are sometimes not correctly
10523 resolved, in both the interpreter and the iASL compiler.
10525 Fixed several problems with the implementation of the
10526 ConcatenateResTemplate
10527 ASL operator. As per the ACPI specification, zero length buffers are now
10528 treated as a single EndTag. One-length buffers always cause a fatal
10529 exception. Non-zero length buffers that do not end with a full 2-byte
10531 cause a fatal exception.
10533 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
10534 interface. (With assistance from Thomas Renninger)
10536 Code and Data Size: The current and previous library sizes for the core
10537 subsystem are shown below. These are the code and data sizes for the
10538 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10540 values do not include any ACPI driver or OSPM code. The debug version of
10542 code includes the debug output trace mechanism and has a much larger code
10543 and data size. Note that these values will vary depending on the
10545 of the compiler and the compiler options used during generation.
10548 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10549 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10551 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10552 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10555 2) iASL Compiler/Disassembler:
10557 Fixed an internal error that was generated for any forward references to
10561 ----------------------------------------
10562 13 January 2006. Summary of changes for version 20060113:
10564 1) ACPI CA Core Subsystem:
10566 Added 2006 copyright to all module headers and signons. This affects
10567 virtually every file in the ACPICA core subsystem, iASL compiler, and the
10570 Enhanced the ACPICA error reporting in order to simplify user migration
10572 the non-debug version of ACPICA. Replaced all instances of the
10573 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
10575 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
10576 respectively. This preserves all error and warning messages in the non-
10578 version of the ACPICA code (this has been referred to as the "debug lite"
10579 option.) Over 200 cases were converted to create a total of over 380
10580 error/warning messages across the ACPICA code. This increases the code
10582 data size of the default non-debug version of the code somewhat (about
10584 but all error/warning reporting may be disabled if desired (and code
10585 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
10586 configuration option. The size of the debug version of ACPICA remains
10590 Fixed a memory leak within the AML Debugger "Set" command. One object was
10591 not properly deleted for every successful invocation of the command.
10593 Code and Data Size: The current and previous library sizes for the core
10594 subsystem are shown below. These are the code and data sizes for the
10595 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10597 values do not include any ACPI driver or OSPM code. The debug version of
10599 code includes the debug output trace mechanism and has a much larger code
10600 and data size. Note that these values will vary depending on the
10602 of the compiler and the compiler options used during generation.
10605 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10606 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10608 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10609 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10612 2) iASL Compiler/Disassembler:
10614 The compiler now officially supports the ACPI 3.0a specification that was
10615 released on December 30, 2005. (Specification is available at
10618 ----------------------------------------
10619 16 December 2005. Summary of changes for version 20051216:
10621 1) ACPI CA Core Subsystem:
10623 Implemented optional support to allow unresolved names within ASL Package
10624 objects. A null object is inserted in the package when a named reference
10625 cannot be located in the current namespace. Enabled via the interpreter
10626 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10628 that contain such code.
10630 Implemented an optimization to the initialization sequence that can
10632 boot time. During ACPI device initialization, the _STA method is now run
10634 and only if the _INI method exists. The _STA method is used to determine
10636 the device is present; An _INI can only be run if _STA returns present,
10638 it is a waste of time to run the _STA method if the _INI does not exist.
10639 (Prototype and assistance from Dong Wei)
10641 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10643 available in the current compiler. Otherwise, the default (void *) cast
10647 Fixed some possible memory leaks found within the execution path of the
10648 Break, Continue, If, and CreateField operators. (Valery Podrezov)
10650 Fixed a problem introduced in the 20051202 release where an exception is
10651 generated during method execution if a control method attempts to declare
10654 Moved resource descriptor string constants that are used by both the AML
10655 disassembler and AML debugger to the common utilities directory so that
10656 these components are independent.
10658 Implemented support in the AcpiExec utility (-e switch) to globally
10660 exceptions during control method execution (method is not aborted.)
10662 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10665 Code and Data Size: The current and previous library sizes for the core
10666 subsystem are shown below. These are the code and data sizes for the
10667 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10669 values do not include any ACPI driver or OSPM code. The debug version of
10671 code includes the debug output trace mechanism and has a much larger code
10672 and data size. Note that these values will vary depending on the
10674 of the compiler and the compiler options used during generation.
10677 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10678 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10680 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10681 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10684 2) iASL Compiler/Disassembler:
10686 Fixed a problem where a CPU stack overflow fault could occur if a
10688 method call was made from within a Return statement.
10690 ----------------------------------------
10691 02 December 2005. Summary of changes for version 20051202:
10693 1) ACPI CA Core Subsystem:
10695 Modified the parsing of control methods to no longer create namespace
10696 objects during the first pass of the parse. Objects are now created only
10697 during the execute phase, at the moment the namespace creation operator
10699 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10701 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10702 reentrant control methods are protected by an AML mutex. The mutex will
10704 correctly block multiple threads from attempting to create the same
10708 Increased the number of available Owner Ids for namespace object tracking
10709 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10711 some machines with a large number of ACPI tables (either static or
10714 Fixed a problem with the AcpiExec utility where a fault could occur when
10716 -b switch (batch mode) is used.
10718 Enhanced the namespace dump routine to output the owner ID for each
10721 Code and Data Size: The current and previous library sizes for the core
10722 subsystem are shown below. These are the code and data sizes for the
10723 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10725 values do not include any ACPI driver or OSPM code. The debug version of
10727 code includes the debug output trace mechanism and has a much larger code
10728 and data size. Note that these values will vary depending on the
10730 of the compiler and the compiler options used during generation.
10733 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10734 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10736 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10737 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10740 2) iASL Compiler/Disassembler:
10742 Fixed a parse error during compilation of certain Switch/Case constructs.
10744 simplify the parse, the grammar now allows for multiple Default
10746 and this error is now detected and flagged during the analysis phase.
10748 Disassembler: The disassembly now includes the contents of the original
10749 table header within a comment at the start of the file. This includes the
10750 name and version of the original ASL compiler.
10752 ----------------------------------------
10753 17 November 2005. Summary of changes for version 20051117:
10755 1) ACPI CA Core Subsystem:
10757 Fixed a problem in the AML parser where the method thread count could be
10758 decremented below zero if any errors occurred during the method parse
10760 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10762 This also fixed a related regression with the mechanism that detects and
10763 corrects methods that cannot properly handle reentrancy (related to the
10764 deployment of the new OwnerId mechanism.)
10766 Eliminated the pre-parsing of control methods (to detect errors) during
10767 table load. Related to the problem above, this was causing unwind issues
10769 any errors occurred during the parse, and it seemed to be overkill. A
10771 load should not be aborted if there are problems with any single control
10772 method, thus rendering this feature rather pointless.
10774 Fixed a problem with the new table-driven resource manager where an
10776 buffer overflow could occur for small resource templates.
10778 Implemented a new external interface, AcpiGetVendorResource. This
10780 will find and return a vendor-defined resource descriptor within a _CRS
10782 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10785 Removed the length limit (200) on string objects as per the upcoming ACPI
10786 3.0A specification. This affects the following areas of the interpreter:
10788 any implicit conversion of a Buffer to a String, 2) a String object
10790 of the ASL Concatentate operator, 3) the String object result of the ASL
10793 Fixed a problem in the Windows OS interface layer (OSL) where a
10795 on a semaphore object would incorrectly timeout. This allows the
10796 multithreading features of the AcpiExec utility to work properly under
10799 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10800 the recently added file named "utresrc.c".
10802 Code and Data Size: The current and previous library sizes for the core
10803 subsystem are shown below. These are the code and data sizes for the
10804 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10806 values do not include any ACPI driver or OSPM code. The debug version of
10808 code includes the debug output trace mechanism and has a much larger code
10809 and data size. Note that these values will vary depending on the
10811 of the compiler and the compiler options used during generation.
10814 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10815 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10817 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10818 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10821 2) iASL Compiler/Disassembler:
10823 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10824 specification. For the iASL compiler, this means that string literals
10826 the source ASL can be of any length.
10828 Enhanced the listing output to dump the AML code for resource descriptors
10829 immediately after the ASL code for each descriptor, instead of in a block
10831 the end of the entire resource template.
10833 Enhanced the compiler debug output to dump the entire original parse tree
10834 constructed during the parse phase, before any transforms are applied to
10836 tree. The transformed tree is dumped also.
10838 ----------------------------------------
10839 02 November 2005. Summary of changes for version 20051102:
10841 1) ACPI CA Core Subsystem:
10843 Modified the subsystem initialization sequence to improve GPE support.
10845 GPE initialization has been split into two parts in order to defer
10847 of the _PRW methods (Power Resources for Wake) until after the hardware
10849 fully initialized and the SCI handler is installed. This allows the _PRW
10850 methods to access fields protected by the Global Lock. This will fix
10852 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10854 Converted the ACPI internal object disassemble and display code within
10856 AML debugger to fully table-driven operation, reducing code size and
10857 increasing maintainability.
10859 Fixed a regression with the ConcatenateResTemplate() ASL operator
10861 in the 20051021 release.
10863 Implemented support for "local" internal ACPI object types within the
10864 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10865 These local types include RegionFields, BankFields, IndexFields, Alias,
10869 Moved common AML resource handling code into a new file, "utresrc.c".
10871 code is shared by both the Resource Manager and the AML Debugger.
10873 Code and Data Size: The current and previous library sizes for the core
10874 subsystem are shown below. These are the code and data sizes for the
10875 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10877 values do not include any ACPI driver or OSPM code. The debug version of
10879 code includes the debug output trace mechanism and has a much larger code
10880 and data size. Note that these values will vary depending on the
10882 of the compiler and the compiler options used during generation.
10885 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10886 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10888 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10889 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10892 2) iASL Compiler/Disassembler:
10894 Fixed a problem with very large initializer lists (more than 4000
10896 for both Buffer and Package objects where the parse stack could overflow.
10898 Enhanced the pre-compile source code scan for non-ASCII characters to
10900 characters within comment fields. The scan is now always performed and is
10902 longer optional, detecting invalid characters within a source file
10903 immediately rather than during the parse phase or later.
10905 Enhanced the ASL grammar definition to force early reductions on all
10907 style grammar elements so that the overall parse stack usage is greatly
10908 reduced. This should improve performance and reduce the possibility of
10912 Eliminated all reduce/reduce conflicts in the iASL parser generation.
10914 with the addition of a %expected statement, the compiler generates from
10915 source with no warnings.
10917 Fixed a possible segment fault in the disassembler if the input filename
10918 does not contain a "dot" extension (Thomas Renninger).
10920 ----------------------------------------
10921 21 October 2005. Summary of changes for version 20051021:
10923 1) ACPI CA Core Subsystem:
10925 Implemented support for the EM64T and other x86-64 processors. This
10926 essentially entails recognizing that these processors support non-aligned
10927 memory transfers. Previously, all 64-bit processors were assumed to lack
10928 hardware support for non-aligned transfers.
10930 Completed conversion of the Resource Manager to nearly full table-driven
10931 operation. Specifically, the resource conversion code (convert AML to
10932 internal format and the reverse) and the debug code to dump internal
10933 resource descriptors are fully table-driven, reducing code and data size
10935 improving maintainability.
10937 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
10939 on 64-bit processors instead of a fixed 32-bit word. (With assistance
10941 Alexey Starikovskiy)
10943 Implemented support within the resource conversion code for the Type-
10944 Specific byte within the various ACPI 3.0 *WordSpace macros.
10946 Fixed some issues within the resource conversion code for the type-
10948 flags for both Memory and I/O address resource descriptors. For Memory,
10949 implemented support for the MTP and TTP flags. For I/O, split the TRS and
10950 TTP flags into two separate fields.
10952 Code and Data Size: The current and previous library sizes for the core
10953 subsystem are shown below. These are the code and data sizes for the
10954 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10956 values do not include any ACPI driver or OSPM code. The debug version of
10958 code includes the debug output trace mechanism and has a much larger code
10959 and data size. Note that these values will vary depending on the
10961 of the compiler and the compiler options used during generation.
10964 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10965 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10967 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10968 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10972 2) iASL Compiler/Disassembler:
10974 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
10976 corresponding ResourceSource string was not also present in a resource
10977 descriptor declaration. This restriction caused problems with existing
10978 AML/ASL code that includes the Index byte without the string. When such
10980 was disassembled, it could not be compiled without modification. Further,
10981 the modified code created a resource template with a different size than
10983 original, breaking code that used fixed offsets into the resource
10987 Removed a recent feature of the disassembler to ignore a lone
10989 byte. This byte is now emitted if present so that the exact AML can be
10990 reproduced when the disassembled code is recompiled.
10992 Improved comments and text alignment for the resource descriptor code
10993 emitted by the disassembler.
10995 Implemented disassembler support for the ACPI 3.0 AccessSize field within
10997 Register() resource descriptor.
10999 ----------------------------------------
11000 30 September 2005. Summary of changes for version 20050930:
11002 1) ACPI CA Core Subsystem:
11004 Completed a major overhaul of the Resource Manager code - specifically,
11005 optimizations in the area of the AML/internal resource conversion code.
11007 code has been optimized to simplify and eliminate duplicated code, CPU
11009 use has been decreased by optimizing function parameters and local
11010 variables, and naming conventions across the manager have been
11012 for clarity and ease of maintenance (this includes function, parameter,
11013 variable, and struct/typedef names.) The update may force changes in some
11014 driver code, depending on how resources are handled by the host OS.
11016 All Resource Manager dispatch and information tables have been moved to a
11017 single location for clarity and ease of maintenance. One new file was
11018 created, named "rsinfo.c".
11020 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
11021 guarantee that the argument is not evaluated twice, making them less
11023 to macro side-effects. However, since there exists the possibility of
11024 additional stack use if a particular compiler cannot optimize them (such
11026 in the debug generation case), the original macros are optionally
11028 Note that some invocations of the return_VALUE macro may now cause size
11029 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
11031 eliminate these. (From Randy Dunlap)
11033 Implemented a new mechanism to enable debug tracing for individual
11035 methods. A new external interface, AcpiDebugTrace, is provided to enable
11036 this mechanism. The intent is to allow the host OS to easily enable and
11037 disable tracing for problematic control methods. This interface can be
11038 easily exposed to a user or debugger interface if desired. See the file
11039 psxface.c for details.
11041 AcpiUtCallocate will now return a valid pointer if a length of zero is
11042 specified - a length of one is used and a warning is issued. This matches
11043 the behavior of AcpiUtAllocate.
11045 Code and Data Size: The current and previous library sizes for the core
11046 subsystem are shown below. These are the code and data sizes for the
11047 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11049 values do not include any ACPI driver or OSPM code. The debug version of
11051 code includes the debug output trace mechanism and has a much larger code
11052 and data size. Note that these values will vary depending on the
11054 of the compiler and the compiler options used during generation.
11057 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11058 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11060 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11061 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11064 2) iASL Compiler/Disassembler:
11066 A remark is issued if the effective compile-time length of a package or
11067 buffer is zero. Previously, this was a warning.
11069 ----------------------------------------
11070 16 September 2005. Summary of changes for version 20050916:
11072 1) ACPI CA Core Subsystem:
11074 Fixed a problem within the Resource Manager where support for the Generic
11075 Register descriptor was not fully implemented. This descriptor is now
11077 recognized, parsed, disassembled, and displayed.
11079 Completely restructured the Resource Manager code to utilize table-driven
11080 dispatch and lookup, eliminating many of the large switch() statements.
11082 reduces overall subsystem code size and code complexity. Affects the
11083 resource parsing and construction, disassembly, and debug dump output.
11085 Cleaned up and restructured the debug dump output for all resource
11086 descriptors. Improved readability of the output and reduced code size.
11088 Fixed a problem where changes to internal data structures caused the
11089 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
11091 Code and Data Size: The current and previous library sizes for the core
11092 subsystem are shown below. These are the code and data sizes for the
11093 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11095 values do not include any ACPI driver or OSPM code. The debug version of
11097 code includes the debug output trace mechanism and has a much larger code
11098 and data size. Note that these values will vary depending on the
11100 of the compiler and the compiler options used during generation.
11103 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11104 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11106 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11107 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11110 2) iASL Compiler/Disassembler:
11112 Updated the disassembler to automatically insert an EndDependentFn()
11114 into the ASL stream if this macro is missing in the original AML code,
11115 simplifying compilation of the resulting ASL module.
11117 Fixed a problem in the disassembler where a disassembled ResourceSource
11118 string (within a large resource descriptor) was not surrounded by quotes
11120 not followed by a comma, causing errors when the resulting ASL module was
11121 compiled. Also, escape sequences within a ResourceSource string are now
11122 handled correctly (especially "\\")
11124 ----------------------------------------
11125 02 September 2005. Summary of changes for version 20050902:
11127 1) ACPI CA Core Subsystem:
11129 Fixed a problem with the internal Owner ID allocation and deallocation
11130 mechanisms for control method execution and recursive method invocation.
11131 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
11132 messages seen on some systems. Recursive method invocation depth is
11133 currently limited to 255. (Alexey Starikovskiy)
11135 Completely eliminated all vestiges of support for the "module-level
11136 executable code" until this support is fully implemented and debugged.
11138 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
11139 some systems that invoke this support.
11141 Fixed a problem within the resource manager code where the transaction
11143 for a 64-bit address descriptor were handled incorrectly in the type-
11144 specific flag byte.
11146 Consolidated duplicate code within the address descriptor resource
11148 code, reducing overall subsystem code size.
11150 Fixed a fault when using the AML debugger "disassemble" command to
11151 disassemble individual control methods.
11153 Removed references to the "release_current" directory within the Unix
11156 Code and Data Size: The current and previous core subsystem library sizes
11157 are shown below. These are the code and data sizes for the acpica.lib
11158 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
11159 include any ACPI driver or OSPM code. The debug version of the code
11161 the debug output trace mechanism and has a much larger code and data
11163 Note that these values will vary depending on the efficiency of the
11165 and the compiler options used during generation.
11168 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11169 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11171 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11172 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11175 2) iASL Compiler/Disassembler:
11177 Implemented an error check for illegal duplicate values in the interrupt
11179 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
11182 Implemented error checking for the Irq() and IrqNoFlags() macros to
11184 too many values in the interrupt list (16 max) and invalid values in the
11185 list (range 0 - 15)
11187 The maximum length string literal within an ASL file is now restricted to
11188 200 characters as per the ACPI specification.
11190 Fixed a fault when using the -ln option (generate namespace listing).
11192 Implemented an error check to determine if a DescriptorName within a
11193 resource descriptor has already been used within the current scope.
11195 ----------------------------------------
11196 15 August 2005. Summary of changes for version 20050815:
11198 1) ACPI CA Core Subsystem:
11200 Implemented a full bytewise compare to determine if a table load request
11202 attempting to load a duplicate table. The compare is performed if the
11204 signatures and table lengths match. This will allow different tables with
11205 the same OEM Table ID and revision to be loaded - probably against the
11207 specification, but discovered in the field nonetheless.
11209 Added the changes.txt logfile to each of the zipped release packages.
11211 Code and Data Size: Current and previous core subsystem library sizes are
11212 shown below. These are the code and data sizes for the acpica.lib
11214 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11215 any ACPI driver or OSPM code. The debug version of the code includes the
11216 debug output trace mechanism and has a much larger code and data size.
11218 that these values will vary depending on the efficiency of the compiler
11220 the compiler options used during generation.
11223 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11224 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11226 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11227 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11230 2) iASL Compiler/Disassembler:
11232 Fixed a problem where incorrect AML code could be generated for Package
11233 objects if optimization is disabled (via the -oa switch).
11235 Fixed a problem with where incorrect AML code is generated for variable-
11236 length packages when the package length is not specified and the number
11238 initializer values is greater than 255.
11241 ----------------------------------------
11242 29 July 2005. Summary of changes for version 20050729:
11244 1) ACPI CA Core Subsystem:
11246 Implemented support to ignore an attempt to install/load a particular
11248 table more than once. Apparently there exists BIOS code that repeatedly
11249 attempts to load the same SSDT upon certain events. With assistance from
11250 Venkatesh Pallipadi.
11252 Restructured the main interface to the AML parser in order to correctly
11253 handle all exceptional conditions. This will prevent leakage of the
11255 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
11257 machines. With assistance from Alexey Starikovskiy.
11259 Support for "module level code" has been disabled in this version due to
11261 number of issues that have appeared on various machines. The support can
11263 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
11264 compilation. When the issues are fully resolved, the code will be enabled
11268 Modified the internal functions for debug print support to define the
11269 FunctionName parameter as a (const char *) for compatibility with
11271 built-in macros such as __FUNCTION__, etc.
11273 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
11275 Implemented support to display an object count summary for the AML
11277 commands Object and Methods.
11279 Code and Data Size: Current and previous core subsystem library sizes are
11280 shown below. These are the code and data sizes for the acpica.lib
11282 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11283 any ACPI driver or OSPM code. The debug version of the code includes the
11284 debug output trace mechanism and has a much larger code and data size.
11286 that these values will vary depending on the efficiency of the compiler
11288 the compiler options used during generation.
11291 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11292 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11294 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11295 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11298 2) iASL Compiler/Disassembler:
11300 Fixed a regression that appeared in the 20050708 version of the compiler
11301 where an error message was inadvertently emitted for invocations of the
11303 reserved control method.
11305 ----------------------------------------
11306 08 July 2005. Summary of changes for version 20050708:
11308 1) ACPI CA Core Subsystem:
11310 The use of the CPU stack in the debug version of the subsystem has been
11311 considerably reduced. Previously, a debug structure was declared in every
11312 function that used the debug macros. This structure has been removed in
11313 favor of declaring the individual elements as parameters to the debug
11314 functions. This reduces the cumulative stack use during nested execution
11316 ACPI function calls at the cost of a small increase in the code size of
11318 debug version of the subsystem. With assistance from Alexey Starikovskiy
11322 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
11323 headers to define a macro that will return the current function name at
11324 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
11326 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
11327 compiler-dependent header, the function name is saved on the CPU stack
11329 pointer per function.) This mechanism is used because apparently there
11330 exists no standard ANSI-C defined macro that that returns the function
11333 Redesigned and reimplemented the "Owner ID" mechanism used to track
11334 namespace objects created/deleted by ACPI tables and control method
11335 execution. A bitmap is now used to allocate and free the IDs, thus
11337 the wraparound problem present in the previous implementation. The size
11339 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
11342 Removed the UINT32_BIT and UINT16_BIT types that were used for the
11344 flag definitions within the headers for the predefined ACPI tables. These
11345 have been replaced by UINT8_BIT in order to increase the code portability
11347 the subsystem. If the use of UINT8 remains a problem, we may be forced to
11348 eliminate bitfields entirely because of a lack of portability.
11350 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
11352 is a frequently used function and this improvement increases the
11354 of the entire subsystem (Alexey Starikovskiy).
11356 Fixed several possible memory leaks and the inverse - premature object
11357 deletion (Alexey Starikovskiy).
11359 Code and Data Size: Current and previous core subsystem library sizes are
11360 shown below. These are the code and data sizes for the acpica.lib
11362 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11363 any ACPI driver or OSPM code. The debug version of the code includes the
11364 debug output trace mechanism and has a much larger code and data size.
11366 that these values will vary depending on the efficiency of the compiler
11368 the compiler options used during generation.
11371 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11372 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11374 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11375 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11377 ----------------------------------------
11378 24 June 2005. Summary of changes for version 20050624:
11380 1) ACPI CA Core Subsystem:
11382 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
11383 the host-defined cache object. This allows the OSL implementation to
11385 and type this object in any manner desired, simplifying the OSL
11386 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
11387 Linux, and should be defined in the OS-specific header file for other
11388 operating systems as required.
11390 Changed the interface to AcpiOsAcquireObject to directly return the
11391 requested object as the function return (instead of ACPI_STATUS.) This
11392 change was made for performance reasons, since this is the purpose of the
11393 interface in the first place. AcpiOsAcquireObject is now similar to the
11394 AcpiOsAllocate interface.
11396 Implemented a new AML debugger command named Businfo. This command
11398 information about all devices that have an associate _PRT object. The
11400 _HID, _UID, and _CID are displayed for these devices.
11402 Modified the initialization sequence in AcpiInitializeSubsystem to call
11404 OSL interface AcpiOslInitialize first, before any local initialization.
11406 change was required because the global initialization now calls OSL
11409 Enhanced the Dump command to display the entire contents of Package
11411 (including all sub-objects and their values.)
11413 Restructured the code base to split some files because of size and/or
11414 because the code logically belonged in a separate file. New files are
11416 below. All makefiles and project files included in the ACPI CA release
11419 utilities/utcache.c /* Local cache interfaces */
11420 utilities/utmutex.c /* Local mutex support */
11421 utilities/utstate.c /* State object support */
11422 interpreter/parser/psloop.c /* Main AML parse loop */
11424 Code and Data Size: Current and previous core subsystem library sizes are
11425 shown below. These are the code and data sizes for the acpica.lib
11427 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11428 any ACPI driver or OSPM code. The debug version of the code includes the
11429 debug output trace mechanism and has a much larger code and data size.
11431 that these values will vary depending on the efficiency of the compiler
11433 the compiler options used during generation.
11436 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11437 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11439 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11440 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11443 2) iASL Compiler/Disassembler:
11445 Fixed a regression introduced in version 20050513 where the use of a
11447 object within a Case() statement caused a compile time exception. The
11448 original behavior has been restored (a Match() operator is emitted.)
11450 ----------------------------------------
11451 17 June 2005. Summary of changes for version 20050617:
11453 1) ACPI CA Core Subsystem:
11455 Moved the object cache operations into the OS interface layer (OSL) to
11457 the host OS to handle these operations if desired (for example, the Linux
11458 OSL will invoke the slab allocator). This support is optional; the
11460 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
11462 code in the ACPI CA core. The new OSL interfaces are shown below. See
11463 utalloc.c for an example implementation, and acpiosxf.h for the exact
11464 interface definitions. With assistance from Alexey Starikovskiy.
11468 AcpiOsAcquireObject
11469 AcpiOsReleaseObject
11471 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
11473 and restore a flags parameter. This fits better with many OS lock models.
11474 Note: the current execution state (interrupt handler or not) is no longer
11475 passed to these interfaces. If necessary, the OSL must determine this
11477 by itself, a simple and fast operation. With assistance from Alexey
11480 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
11481 present if the revision of the RSDP was 2 or greater. According to the
11483 specification, the XSDT is optional in all cases, and the table manager
11484 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
11485 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
11489 Fixed an interpreter problem with the Mid() operator in the case of an
11491 string where the resulting output string is of zero length. It now
11493 returns a valid, null terminated string object instead of a string object
11494 with a null pointer.
11496 Fixed a problem with the control method argument handling to allow a
11498 to an Arg object that already contains an object of type Device. The
11500 object is now correctly overwritten. Previously, an error was returned.
11503 Enhanced the debugger Find command to emit object values in addition to
11505 found object pathnames. The output format is the same as the dump
11509 Enhanced the debugger Set command. It now has the ability to set the
11511 of any Named integer object in the namespace (Previously, only method
11513 and args could be set.)
11515 Code and Data Size: Current and previous core subsystem library sizes are
11516 shown below. These are the code and data sizes for the acpica.lib
11518 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11519 any ACPI driver or OSPM code. The debug version of the code includes the
11520 debug output trace mechanism and has a much larger code and data size.
11522 that these values will vary depending on the efficiency of the compiler
11524 the compiler options used during generation.
11527 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11528 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11530 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11531 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11534 2) iASL Compiler/Disassembler:
11536 Fixed a regression in the disassembler where if/else/while constructs
11538 output incorrectly. This problem was introduced in the previous release
11539 (20050526). This problem also affected the single-step disassembly in the
11542 Fixed a problem where compiling the reserved _OSI method would randomly
11544 rarely) produce compile errors.
11546 Enhanced the disassembler to emit compilable code in the face of
11548 AML resource descriptors. If the optional ResourceSourceIndex is present,
11549 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
11550 disassembly. Otherwise, the resulting code cannot be compiled without
11553 ----------------------------------------
11554 26 May 2005. Summary of changes for version 20050526:
11556 1) ACPI CA Core Subsystem:
11558 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
11559 the module level (not within a control method.) These opcodes are
11561 exactly once at the time the table is loaded. This type of code was legal
11563 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
11565 order to provide backwards compatibility with earlier BIOS
11567 This eliminates the "Encountered executable code at module level" warning
11568 that was previously generated upon detection of such code.
11570 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
11571 inadvertently be generated during the lookup of namespace objects in the
11572 second pass parse of ACPI tables and control methods. It appears that
11574 problem could occur during the resolution of forward references to
11578 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
11579 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
11580 allows the deadlock detection debug code to be compiled out in the normal
11581 case, improving mutex performance (and overall subsystem performance)
11584 Implemented a handful of miscellaneous fixes for possible memory leaks on
11585 error conditions and error handling control paths. These fixes were
11586 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
11588 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
11590 to prevent a fault in this error case.
11592 Code and Data Size: Current and previous core subsystem library sizes are
11593 shown below. These are the code and data sizes for the acpica.lib
11595 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11596 any ACPI driver or OSPM code. The debug version of the code includes the
11597 debug output trace mechanism and has a much larger code and data size.
11599 that these values will vary depending on the efficiency of the compiler
11601 the compiler options used during generation.
11604 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11605 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11607 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11608 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11611 2) iASL Compiler/Disassembler:
11613 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
11614 the module level (not within a control method.) These operators will be
11615 executed once at the time the table is loaded. This type of code was
11617 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
11618 compiler in order to provide backwards compatibility with earlier BIOS
11622 The ACPI integer width (specified via the table revision ID or the -r
11623 override, 32 or 64 bits) is now used internally during compile-time
11625 folding to ensure that constants are truncated to 32 bits if necessary.
11626 Previously, the revision ID value was only emitted in the AML table
11629 An error message is now generated for the Mutex and Method operators if
11631 SyncLevel parameter is outside the legal range of 0 through 15.
11633 Fixed a problem with the Method operator ParameterTypes list handling
11635 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11637 The actual underlying implementation of method argument typechecking is
11638 still under development, however.
11640 ----------------------------------------
11641 13 May 2005. Summary of changes for version 20050513:
11643 1) ACPI CA Core Subsystem:
11645 Implemented support for PCI Express root bridges -- added support for
11647 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
11649 The interpreter now automatically truncates incoming 64-bit constants to
11651 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
11653 also affects the iASL compiler constant folding. (Note: as per below, the
11654 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
11656 Fixed a problem where string and buffer objects with "static" pointers
11657 (pointers to initialization data within an ACPI table) were not handled
11658 consistently. The internal object copy operation now always copies the
11660 to a newly allocated buffer, regardless of whether the source object is
11663 Fixed a problem with the FromBCD operator where an implicit result
11664 conversion was improperly performed while storing the result to the
11666 operand. Since this is an "explicit conversion" operator, the implicit
11667 conversion should never be performed on the output.
11669 Fixed a problem with the CopyObject operator where a copy to an existing
11670 named object did not always completely overwrite the existing object
11672 at name. Specifically, a buffer-to-buffer copy did not delete the
11676 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11678 structs for consistency.
11680 Code and Data Size: Current and previous core subsystem library sizes are
11681 shown below. These are the code and data sizes for the acpica.lib
11683 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11684 any ACPI driver or OSPM code. The debug version of the code includes the
11685 debug output trace mechanism and has a much larger code and data size.
11687 that these values will vary depending on the efficiency of the compiler
11689 the compiler options used during generation.
11692 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11693 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11694 Current Release: (Same sizes)
11695 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11696 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11699 2) iASL Compiler/Disassembler:
11701 The compiler now emits a warning if an attempt is made to generate a 64-
11703 integer constant from within a 32-bit ACPI table (Revision < 2). The
11705 is truncated to 32 bits.
11707 Fixed a problem with large package objects: if the static length of the
11708 package is greater than 255, the "variable length package" opcode is
11709 emitted. Previously, this caused an error. This requires an update to the
11710 ACPI spec, since it currently (incorrectly) states that packages larger
11712 255 elements are not allowed.
11714 The disassembler now correctly handles variable length packages and
11716 larger than 255 elements.
11718 ----------------------------------------
11719 08 April 2005. Summary of changes for version 20050408:
11721 1) ACPI CA Core Subsystem:
11723 Fixed three cases in the interpreter where an "index" argument to an ASL
11724 function was still (internally) 32 bits instead of the required 64 bits.
11725 This was the Index argument to the Index, Mid, and Match operators.
11727 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11729 not a POSIX-defined function and not present in most kernel-level C
11730 libraries. All references to the C library strupr function have been
11734 Completed the deployment of static functions/prototypes. All prototypes
11736 the static attribute have been moved from the headers to the owning C
11739 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11740 utility). This option allows the utility to extract individual ACPI
11742 from the output of AcpiDmp. It provides the same functionality of the
11743 acpixtract.pl perl script without the worry of setting the correct perl
11744 options. AcpiBin runs on Windows and has not yet been generated/validated
11746 the Linux/Unix environment (but should be soon).
11748 Updated and fixed the table dump option for AcpiBin (-d). This option
11749 converts a single ACPI table to a hex/ascii file, similar to the output
11753 Code and Data Size: Current and previous core subsystem library sizes are
11754 shown below. These are the code and data sizes for the acpica.lib
11756 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11757 any ACPI driver or OSPM code. The debug version of the code includes the
11758 debug output trace mechanism and has a much larger code and data size.
11760 that these values will vary depending on the efficiency of the compiler
11762 the compiler options used during generation.
11765 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11766 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11768 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11769 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11772 2) iASL Compiler/Disassembler:
11774 Disassembler fix: Added a check to ensure that the table length found in
11776 ACPI table header within the input file is not longer than the actual
11778 file size. This indicates some kind of file or table corruption.
11780 ----------------------------------------
11781 29 March 2005. Summary of changes for version 20050329:
11783 1) ACPI CA Core Subsystem:
11785 An error is now generated if an attempt is made to create a Buffer Field
11787 length zero (A CreateField with a length operand of zero.)
11789 The interpreter now issues a warning whenever executable code at the
11791 level is detected during ACPI table load. This will give some idea of the
11792 prevalence of this type of code.
11794 Implemented support for references to named objects (other than control
11795 methods) within package objects.
11797 Enhanced package object output for the debug object. Package objects are
11799 completely dumped, showing all elements.
11801 Enhanced miscellaneous object output for the debug object. Any object can
11802 now be written to the debug object (for example, a device object can be
11803 written, and the type of the object will be displayed.)
11805 The "static" qualifier has been added to all local functions across both
11807 core subsystem and the iASL compiler.
11809 The number of "long" lines (> 80 chars) within the source has been
11810 significantly reduced, by about 1/3.
11812 Cleaned up all header files to ensure that all CA/iASL functions are
11813 prototyped (even static functions) and the formatting is consistent.
11815 Two new header files have been added, acopcode.h and acnames.h.
11817 Removed several obsolete functions that were no longer used.
11819 Code and Data Size: Current and previous core subsystem library sizes are
11820 shown below. These are the code and data sizes for the acpica.lib
11822 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11823 any ACPI driver or OSPM code. The debug version of the code includes the
11824 debug output trace mechanism and has a much larger code and data size.
11826 that these values will vary depending on the efficiency of the compiler
11828 the compiler options used during generation.
11831 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11832 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11834 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11835 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11839 2) iASL Compiler/Disassembler:
11841 Fixed a problem with the resource descriptor generation/support. For the
11842 ResourceSourceIndex and the ResourceSource fields, both must be present,
11844 both must be not present - can't have one without the other.
11846 The compiler now returns non-zero from the main procedure if any errors
11848 occurred during the compilation.
11851 ----------------------------------------
11852 09 March 2005. Summary of changes for version 20050309:
11854 1) ACPI CA Core Subsystem:
11856 The string-to-buffer implicit conversion code has been modified again
11858 a change to the ACPI specification. In order to match the behavior of
11860 other major ACPI implementation, the target buffer is no longer truncated
11862 the source string is smaller than an existing target buffer. This change
11863 requires an update to the ACPI spec, and should eliminate the recent
11864 AE_AML_BUFFER_LIMIT issues.
11866 The "implicit return" support was rewritten to a new algorithm that
11868 the general case. Rather than attempt to determine when a method is about
11870 exit, the result of every ASL operator is saved momentarily until the
11872 next ASL operator is executed. Therefore, no matter how the method exits,
11873 there will always be a saved implicit return value. This feature is only
11874 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11876 AE_AML_NO_RETURN_VALUE errors when enabled.
11878 Implemented implicit conversion support for the predicate (operand) of
11880 If, Else, and While operators. String and Buffer arguments are
11882 converted to Integers.
11884 Changed the string-to-integer conversion behavior to match the new ACPI
11885 errata: "If no integer object exists, a new integer is created. The ASCII
11886 string is interpreted as a hexadecimal constant. Each string character is
11887 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11888 with the first character as the most significant digit, and ending with
11890 first non-hexadecimal character or end-of-string." This means that the
11892 non-hex character terminates the conversion and this is the code that was
11895 Fixed a problem where the ObjectType operator would fail (fault) when
11897 on an Index of a Package which pointed to a null package element. The
11898 operator now properly returns zero (Uninitialized) in this case.
11900 Fixed a problem where the While operator used excessive memory by not
11901 properly popping the result stack during execution. There was no memory
11903 after execution, however. (Code provided by Valery Podrezov.)
11905 Fixed a problem where references to control methods within Package
11907 caused the method to be invoked, instead of producing a reference object
11908 pointing to the method.
11910 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
11912 improve performance and reduce code size. (Code provided by Alexey
11915 Code and Data Size: Current and previous core subsystem library sizes are
11916 shown below. These are the code and data sizes for the acpica.lib
11918 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11919 any ACPI driver or OSPM code. The debug version of the code includes the
11920 debug output trace mechanism and has a much larger code and data size.
11922 that these values will vary depending on the efficiency of the compiler
11924 the compiler options used during generation.
11927 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11928 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11930 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11931 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11934 2) iASL Compiler/Disassembler:
11936 Fixed a problem with the Return operator with no arguments. Since the AML
11937 grammar for the byte encoding requires an operand for the Return opcode,
11939 compiler now emits a Return(Zero) for this case. An ACPI specification
11940 update has been written for this case.
11942 For tables other than the DSDT, namepath optimization is automatically
11943 disabled. This is because SSDTs can be loaded anywhere in the namespace,
11945 compiler has no knowledge of where, and thus cannot optimize namepaths.
11947 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
11948 inadvertently omitted from the ACPI specification, and will require an
11949 update to the spec.
11951 The source file scan for ASCII characters is now optional (-a). This
11953 was made because some vendors place non-ascii characters within comments.
11954 However, the scan is simply a brute-force byte compare to ensure all
11955 characters in the file are in the range 0x00 to 0x7F.
11957 Fixed a problem with the CondRefOf operator where the compiler was
11958 inappropriately checking for the existence of the target. Since the point
11960 the operator is to check for the existence of the target at run-time, the
11961 compiler no longer checks for the target existence.
11963 Fixed a problem where errors generated from the internal AML interpreter
11964 during constant folding were not handled properly, causing a fault.
11966 Fixed a problem with overly aggressive range checking for the Stall
11967 operator. The valid range (max 255) is now only checked if the operand is
11969 type Integer. All other operand types cannot be statically checked.
11971 Fixed a problem where control method references within the RefOf,
11973 and ObjectType operators were not treated properly. They are now treated
11975 actual references, not method invocations.
11977 Fixed and enhanced the "list namespace" option (-ln). This option was
11979 a number of releases ago.
11981 Improved error handling for the Field, IndexField, and BankField
11983 The compiler now cleanly reports and recovers from errors in the field
11984 component (FieldUnit) list.
11986 Fixed a disassembler problem where the optional ResourceDescriptor fields
11987 TRS and TTP were not always handled correctly.
11989 Disassembler - Comments in output now use "//" instead of "/*"
11991 ----------------------------------------
11992 28 February 2005. Summary of changes for version 20050228:
11994 1) ACPI CA Core Subsystem:
11996 Fixed a problem where the result of an Index() operator (an object
11997 reference) must increment the reference count on the target object for
11999 life of the object reference.
12001 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
12002 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
12004 resource descriptors.
12006 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
12007 Space Descriptor" string, indicating interpreter support for the
12011 Implemented header support for the new ACPI 3.0 FADT flag bits.
12013 Implemented header support for the new ACPI 3.0 PCI Express bits for the
12015 status/enable registers.
12017 Updated header support for the MADT processor local Apic struct and MADT
12018 platform interrupt source struct for new ACPI 3.0 fields.
12020 Implemented header support for the SRAT and SLIT ACPI tables.
12022 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
12026 Code and Data Size: Current and previous core subsystem library sizes are
12027 shown below. These are the code and data sizes for the acpica.lib
12029 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12030 any ACPI driver or OSPM code. The debug version of the code includes the
12031 debug output trace mechanism and has a much larger code and data size.
12033 that these values will vary depending on the efficiency of the compiler
12035 the compiler options used during generation.
12038 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12039 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12041 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12042 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12045 2) iASL Compiler/Disassembler:
12047 Fixed a problem with the internal 64-bit String-to-integer conversion
12049 strings less than two characters long.
12051 Fixed a problem with constant folding where the result of the Index()
12052 operator can not be considered a constant. This means that Index() cannot
12054 a type3 opcode and this will require an update to the ACPI specification.
12056 Disassembler: Implemented support for the TTP, MTP, and TRS resource
12057 descriptor fields. These fields were inadvertently ignored and not output
12059 the disassembly of the resource descriptor.
12062 ----------------------------------------
12063 11 February 2005. Summary of changes for version 20050211:
12065 1) ACPI CA Core Subsystem:
12067 Implemented ACPI 3.0 support for implicit conversion within the Match()
12068 operator. MatchObjects can now be of type integer, buffer, or string
12070 of just type integer. Package elements are implicitly converted to the
12072 of the MatchObject. This change aligns the behavior of Match() with the
12073 behavior of the other logical operators (LLess(), etc.) It also requires
12075 errata change to the ACPI specification as this support was intended for
12076 ACPI 3.0, but was inadvertently omitted.
12078 Fixed a problem with the internal implicit "to buffer" conversion.
12080 that are converted to buffers will cause buffer truncation if the string
12082 smaller than the target buffer. Integers that are converted to buffers
12084 not cause buffer truncation, only zero extension (both as per the ACPI
12085 spec.) The problem was introduced when code was added to truncate the
12086 buffer, but this should not be performed in all cases, only the string
12089 Fixed a problem with the Buffer and Package operators where the
12091 would get confused if two such operators were used as operands to an ASL
12092 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
12093 stack was not being popped after the execution of these operators,
12095 in an AE_NO_RETURN_VALUE exception.
12097 Fixed a problem with constructs of the form Store(Index(...),...). The
12098 reference object returned from Index was inadvertently resolved to an
12100 value. This problem was introduced in version 20050114 when the behavior
12102 Store() was modified to restrict the object types that can be used as the
12103 source operand (to match the ACPI specification.)
12105 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
12107 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
12109 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
12111 Code and Data Size: Current and previous core subsystem library sizes are
12112 shown below. These are the code and data sizes for the acpica.lib
12114 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12115 any ACPI driver or OSPM code. The debug version of the code includes the
12116 debug output trace mechanism and has a much larger code and data size.
12118 that these values will vary depending on the efficiency of the compiler
12120 the compiler options used during generation.
12123 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12124 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12126 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12127 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12130 2) iASL Compiler/Disassembler:
12132 Fixed a code generation problem in the constant folding optimization code
12133 where incorrect code was generated if a constant was reduced to a buffer
12134 object (i.e., a reduced type 5 opcode.)
12136 Fixed a typechecking problem for the ToBuffer operator. Caused by an
12137 incorrect return type in the internal opcode information table.
12139 ----------------------------------------
12140 25 January 2005. Summary of changes for version 20050125:
12142 1) ACPI CA Core Subsystem:
12144 Fixed a recently introduced problem with the Global Lock where the
12145 underlying semaphore was not created. This problem was introduced in
12146 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
12147 Acquire() operation on _GL.
12149 The local object cache is now optional, and is disabled by default. Both
12150 AcpiExec and the iASL compiler enable the cache because they run in user
12151 mode and this enhances their performance. #define
12152 ACPI_ENABLE_OBJECT_CACHE
12153 to enable the local cache.
12155 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
12157 optional "implicit return" support where an error was returned if no
12159 object was expected, but one was implicitly returned. AE_OK is now
12161 in this case and the implicitly returned object is deleted.
12162 AcpiUtEvaluateObject is only occasionally used, and only to execute
12164 methods such as _STA and _INI where the return type is known up front.
12166 Fixed a few issues with the internal convert-to-integer code. It now
12168 an error if an attempt is made to convert a null string, a string of only
12169 blanks/tabs, or a zero-length buffer. This affects both implicit
12171 and explicit conversion via the ToInteger() operator.
12173 The internal debug code in AcpiUtAcquireMutex has been commented out. It
12175 not needed for normal operation and should increase the performance of
12177 entire subsystem. The code remains in case it is needed for debug
12181 The AcpiExec source and makefile are included in the Unix/Linux package
12185 Code and Data Size: Current and previous core subsystem library sizes are
12186 shown below. These are the code and data sizes for the acpica.lib
12188 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12189 any ACPI driver or OSPM code. The debug version of the code includes the
12190 debug output trace mechanism and has a much larger code and data size.
12192 that these values will vary depending on the efficiency of the compiler
12194 the compiler options used during generation.
12197 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12198 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12200 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12201 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12203 2) iASL Compiler/Disassembler:
12205 Switch/Case support: A warning is now issued if the type of the Switch
12207 cannot be determined at compile time. For example, Switch(Arg0) will
12208 generate the warning, and the type is assumed to be an integer. As per
12210 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
12214 Switch/Case support: Implemented support for buffer and string objects as
12215 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
12216 buffers and strings.
12218 Switch/Case support: The emitted code for the LEqual() comparisons now
12220 the switch value as the first operand, not the second. The case value is
12222 the second operand, and this allows the case value to be implicitly
12223 converted to the type of the switch value, not the other way around.
12225 Switch/Case support: Temporary variables are now emitted immediately
12227 the control method, not at the global level. This means that there are
12229 36 temps available per-method, not 36 temps per-module as was the case
12231 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
12233 ----------------------------------------
12234 14 January 2005. Summary of changes for version 20050114:
12236 Added 2005 copyright to all module headers. This affects every module in
12237 the core subsystem, iASL compiler, and the utilities.
12239 1) ACPI CA Core Subsystem:
12241 Fixed an issue with the String-to-Buffer conversion code where the string
12242 null terminator was not included in the buffer after conversion, but
12244 is existing ASL that assumes the string null terminator is included. This
12246 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
12247 introduced in the previous version when the code was updated to correctly
12248 set the converted buffer size as per the ACPI specification. The ACPI
12250 is ambiguous and will be updated to specify that the null terminator must
12252 included in the converted buffer. This also affects the ToBuffer() ASL
12255 Fixed a problem with the Mid() ASL/AML operator where it did not work
12256 correctly on Buffer objects. Newly created sub-buffers were not being
12261 Fixed a problem in AcpiTbFindTable where incorrect string compares were
12262 performed on the OemId and OemTableId table header fields. These fields
12264 not null terminated, so strncmp is now used instead of strcmp.
12266 Implemented a restriction on the Store() ASL/AML operator to align the
12267 behavior with the ACPI specification. Previously, any object could be
12269 as the source operand. Now, the only objects that may be used are
12271 Buffers, Strings, Packages, Object References, and DDB Handles. If
12272 necessary, the original behavior can be restored by enabling the
12273 EnableInterpreterSlack flag.
12275 Enhanced the optional "implicit return" support to allow an implicit
12277 value from methods that are invoked externally via the AcpiEvaluateObject
12278 interface. This enables implicit returns from the _STA and _INI methods,
12281 Changed the Revision() ASL/AML operator to return the current version of
12283 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
12285 the supported ACPI version (This is the function of the _REV method).
12287 Updated the _REV predefined method to return the currently supported
12291 Implemented batch mode option for the AcpiExec utility (-b).
12293 Code and Data Size: Current and previous core subsystem library sizes are
12294 shown below. These are the code and data sizes for the acpica.lib
12296 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12297 any ACPI driver or OSPM code. The debug version of the code includes the
12298 debug output trace mechanism and has a much larger code and data size.
12300 that these values will vary depending on the efficiency of the compiler
12302 the compiler options used during generation.
12305 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12306 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12308 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12309 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12311 ----------------------------------------
12312 10 December 2004. Summary of changes for version 20041210:
12314 ACPI 3.0 support is nearing completion in both the iASL compiler and the
12315 ACPI CA core subsystem.
12317 1) ACPI CA Core Subsystem:
12319 Fixed a problem in the ToDecimalString operator where the resulting
12321 length was incorrectly calculated. The length is now calculated exactly,
12322 eliminating incorrect AE_STRING_LIMIT exceptions.
12324 Fixed a problem in the ToHexString operator to allow a maximum 200
12326 string to be produced.
12328 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
12330 routine where the length of the resulting buffer was not truncated to the
12331 new size (if the target buffer already existed).
12333 Code and Data Size: Current and previous core subsystem library sizes are
12334 shown below. These are the code and data sizes for the acpica.lib
12336 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12337 any ACPI driver or OSPM code. The debug version of the code includes the
12338 debug output trace mechanism and has a much larger code and data size.
12340 that these values will vary depending on the efficiency of the compiler
12342 the compiler options used during generation.
12345 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12346 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12348 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12349 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12352 2) iASL Compiler/Disassembler:
12354 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
12355 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
12356 Includes support in the disassembler.
12358 Implemented support for the new (ACPI 3.0) parameter to the Register
12362 Fixed a problem where the _HE resource name for the Interrupt macro was
12363 referencing bit 0 instead of bit 1.
12365 Implemented check for maximum 255 interrupts in the Interrupt macro.
12367 Fixed a problem with the predefined resource descriptor names where
12368 incorrect AML code was generated if the offset within the resource buffer
12369 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
12370 but did not update the surrounding package lengths.
12372 Changes to the Dma macro: All channels within the channel list must be
12374 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
12375 optional (default is BusMaster).
12377 Implemented check for maximum 7 data bytes for the VendorShort macro.
12379 The ReadWrite parameter is now optional for the Memory32 and similar
12382 ----------------------------------------
12383 03 December 2004. Summary of changes for version 20041203:
12385 1) ACPI CA Core Subsystem:
12387 The low-level field insertion/extraction code (exfldio) has been
12389 rewritten to eliminate unnecessary complexity, bugs, and boundary
12392 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12394 operators where the input operand could be inadvertently deleted if no
12395 conversion was necessary (e.g., if the input to ToInteger was an Integer
12398 Fixed a problem with the ToDecimalString and ToHexString where an
12400 exception code was returned if the resulting string would be > 200 chars.
12401 AE_STRING_LIMIT is now returned.
12403 Fixed a problem with the Concatenate operator where AE_OK was always
12404 returned, even if the operation failed.
12406 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12407 semaphores to be allocated.
12409 Code and Data Size: Current and previous core subsystem library sizes are
12410 shown below. These are the code and data sizes for the acpica.lib
12412 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12413 any ACPI driver or OSPM code. The debug version of the code includes the
12414 debug output trace mechanism and has a much larger code and data size.
12416 that these values will vary depending on the efficiency of the compiler
12418 the compiler options used during generation.
12421 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12422 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12424 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12425 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12428 2) iASL Compiler/Disassembler:
12430 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12431 recently introduced in 20041119.
12433 Fixed a problem with the ToUUID macro where the upper nybble of each
12435 byte was inadvertently set to zero.
12437 ----------------------------------------
12438 19 November 2004. Summary of changes for version 20041119:
12440 1) ACPI CA Core Subsystem:
12442 Fixed a problem in the internal ConvertToInteger routine where new
12444 were not truncated to 32 bits for 32-bit ACPI tables. This routine
12446 buffers and strings to integers.
12448 Implemented support to store a value to an Index() on a String object.
12450 is an ACPI 2.0 feature that had not yet been implemented.
12452 Implemented new behavior for storing objects to individual package
12454 (via the Index() operator). The previous behavior was to invoke the
12456 conversion rules if an object was already present at the index. The new
12457 behavior is to simply delete any existing object and directly store the
12459 object. Although the ACPI specification seems unclear on this subject,
12461 ACPI implementations behave in this manner. (This is the root of the
12462 AE_BAD_HEX_CONSTANT issue.)
12464 Modified the RSDP memory scan mechanism to support the extended checksum
12466 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
12467 RSDP signature is found with a valid checksum.
12469 Code and Data Size: Current and previous core subsystem library sizes are
12470 shown below. These are the code and data sizes for the acpica.lib
12472 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12473 any ACPI driver or OSPM code. The debug version of the code includes the
12474 debug output trace mechanism and has a much larger code and data size.
12476 that these values will vary depending on the efficiency of the compiler
12478 the compiler options used during generation.
12481 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12482 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12484 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12485 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12488 2) iASL Compiler/Disassembler:
12490 Fixed a missing semicolon in the aslcompiler.y file.
12492 ----------------------------------------
12493 05 November 2004. Summary of changes for version 20041105:
12495 1) ACPI CA Core Subsystem:
12497 Implemented support for FADT revision 2. This was an interim table
12499 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
12501 Implemented optional support to allow uninitialized LocalX and ArgX
12502 variables in a control method. The variables are initialized to an
12504 object with a value of zero. This support is enabled by setting the
12505 AcpiGbl_EnableInterpreterSlack flag to TRUE.
12507 Implemented support for Integer objects for the SizeOf operator. Either
12509 or 8 is returned, depending on the current integer size (32-bit or 64-
12511 depending on the parent table revision).
12513 Fixed a problem in the implementation of the SizeOf and ObjectType
12515 where the operand was resolved to a value too early, causing incorrect
12516 return values for some objects.
12518 Fixed some possible memory leaks during exceptional conditions.
12520 Code and Data Size: Current and previous core subsystem library sizes are
12521 shown below. These are the code and data sizes for the acpica.lib
12523 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12524 any ACPI driver or OSPM code. The debug version of the code includes the
12525 debug output trace mechanism and has a much larger code and data size.
12527 that these values will vary depending on the efficiency of the compiler
12529 the compiler options used during generation.
12532 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12533 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12535 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12536 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12539 2) iASL Compiler/Disassembler:
12541 Implemented support for all ACPI 3.0 reserved names and methods.
12543 Implemented all ACPI 3.0 grammar elements in the front-end, including
12544 support for semicolons.
12546 Implemented the ACPI 3.0 Function() and ToUUID() macros
12548 Fixed a problem in the disassembler where a Scope() operator would not be
12549 emitted properly if the target of the scope was in another table.
12551 ----------------------------------------
12552 15 October 2004. Summary of changes for version 20041015:
12554 Note: ACPI CA is currently undergoing an in-depth and complete formal
12555 evaluation to test/verify the following areas. Other suggestions are
12556 welcome. This will result in an increase in the frequency of releases and
12557 the number of bug fixes in the next few months.
12558 - Functional tests for all ASL/AML operators
12559 - All implicit/explicit type conversions
12560 - Bit fields and operation regions
12561 - 64-bit math support and 32-bit-only "truncated" math support
12562 - Exceptional conditions, both compiler and interpreter
12563 - Dynamic object deletion and memory leaks
12564 - ACPI 3.0 support when implemented
12565 - External interfaces to the ACPI subsystem
12568 1) ACPI CA Core Subsystem:
12570 Fixed two alignment issues on 64-bit platforms - within debug statements
12572 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
12574 field within the non-aligned ACPI generic address structure.
12576 Fixed a problem in the Increment and Decrement operators where incorrect
12577 operand resolution could result in the inadvertent modification of the
12578 original integer when the integer is passed into another method as an
12579 argument and the arg is then incremented/decremented.
12581 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
12583 BCD number were truncated during conversion.
12585 Fixed a problem in the ToDecimal operator where the length of the
12587 string could be set incorrectly too long if the input operand was a
12591 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
12593 within a buffer would prematurely terminate a compare between buffer
12596 Added a check for string overflow (>200 characters as per the ACPI
12597 specification) during the Concatenate operator with two string operands.
12599 Code and Data Size: Current and previous core subsystem library sizes are
12600 shown below. These are the code and data sizes for the acpica.lib
12602 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12603 any ACPI driver or OSPM code. The debug version of the code includes the
12604 debug output trace mechanism and has a much larger code and data size.
12606 that these values will vary depending on the efficiency of the compiler
12608 the compiler options used during generation.
12611 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12612 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12614 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12615 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12619 2) iASL Compiler/Disassembler:
12621 Allow the use of the ObjectType operator on uninitialized Locals and Args
12622 (returns 0 as per the ACPI specification).
12624 Fixed a problem where the compiler would fault if there was a syntax
12626 in the FieldName of all of the various CreateXXXField operators.
12628 Disallow the use of lower case letters within the EISAID macro, as per
12630 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12632 U is an uppercase letter and N is a hex digit.
12635 ----------------------------------------
12636 06 October 2004. Summary of changes for version 20041006:
12638 1) ACPI CA Core Subsystem:
12640 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12641 implements a 64-bit timer with 100 nanosecond granularity.
12643 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12644 implement the ACPI 3.0 Timer operator. This allows the host OS to
12646 the timer with the best clock available. Also, it keeps the core
12648 out of the clock handling business, since the host OS (usually) performs
12651 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
12652 functions use a 64-bit address which is part of the packed ACPI Generic
12653 Address Structure. Since the structure is non-aligned, the alignment
12655 are now used to extract the address to a local variable before use.
12657 Fixed a problem where the ToInteger operator assumed all input strings
12659 hexadecimal. The operator now handles both decimal strings and hex
12661 (prefixed with "0x").
12663 Fixed a problem where the string length in the string object created as a
12664 result of the internal ConvertToString procedure could be incorrect. This
12665 potentially affected all implicit conversions and also the
12667 and ToHexString operators.
12669 Fixed two problems in the ToString operator. If the length parameter was
12670 zero, an incorrect string object was created and the value of the input
12671 length parameter was inadvertently changed from zero to Ones.
12673 Fixed a problem where the optional ResourceSource string in the
12675 resource macro was ignored.
12677 Simplified the interfaces to the internal division functions, reducing
12679 size and complexity.
12681 Code and Data Size: Current and previous core subsystem library sizes are
12682 shown below. These are the code and data sizes for the acpica.lib
12684 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12685 any ACPI driver or OSPM code. The debug version of the code includes the
12686 debug output trace mechanism and has a much larger code and data size.
12688 that these values will vary depending on the efficiency of the compiler
12690 the compiler options used during generation.
12693 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12694 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12696 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12697 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12700 2) iASL Compiler/Disassembler:
12702 Implemented support for the ACPI 3.0 Timer operator.
12704 Fixed a problem where the Default() operator was inadvertently ignored in
12706 Switch/Case block. This was a problem in the translation of the Switch
12707 statement to If...Else pairs.
12709 Added support to allow a standalone Return operator, with no parentheses
12713 Fixed a problem with code generation for the ElseIf operator where the
12714 translated Else...If parse tree was improperly constructed leading to the
12717 ----------------------------------------
12718 22 September 2004. Summary of changes for version 20040922:
12720 1) ACPI CA Core Subsystem:
12722 Fixed a problem with the implementation of the LNot() operator where
12724 was not returned for the TRUE case. Changed the code to return Ones
12726 of (!Arg) which was usually 1. This change affects iASL constant folding
12728 this operator also.
12730 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12732 initialized properly -- Now zero the entire buffer in this case where the
12733 buffer already exists.
12735 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12736 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12737 related code considerably. This will require changes/updates to all OS
12738 interface layers (OSLs.)
12740 Implemented a new external interface, AcpiInstallExceptionHandler, to
12742 a system exception handler to be installed. This handler is invoked upon
12744 run-time exception that occurs during control method execution.
12746 Added support for the DSDT in AcpiTbFindTable. This allows the
12747 DataTableRegion() operator to access the local copy of the DSDT.
12749 Code and Data Size: Current and previous core subsystem library sizes are
12750 shown below. These are the code and data sizes for the acpica.lib
12752 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12753 any ACPI driver or OSPM code. The debug version of the code includes the
12754 debug output trace mechanism and has a much larger code and data size.
12756 that these values will vary depending on the efficiency of the compiler
12758 the compiler options used during generation.
12761 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12762 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12764 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12765 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12768 2) iASL Compiler/Disassembler:
12770 Fixed a problem with constant folding and the LNot operator. LNot was
12771 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12773 could result in the generation of an incorrect folded/reduced constant.
12775 End-Of-File is now allowed within a "//"-style comment. A parse error no
12776 longer occurs if such a comment is at the very end of the input ASL
12780 Implemented the "-r" option to override the Revision in the table header.
12781 The initial use of this option will be to simplify the evaluation of the
12783 interpreter by allowing a single ASL source module to be compiled for
12785 32-bit or 64-bit integers.
12788 ----------------------------------------
12789 27 August 2004. Summary of changes for version 20040827:
12791 1) ACPI CA Core Subsystem:
12793 - Implemented support for implicit object conversion in the non-numeric
12794 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12796 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12797 the second operand is implicitly converted on the fly to match the type
12799 the first operand. For example:
12801 LEqual (Source1, Source2)
12803 Source1 and Source2 must each evaluate to an integer, a string, or a
12805 The data type of Source1 dictates the required type of Source2. Source2
12807 implicitly converted if necessary to match the type of Source1.
12809 - Updated and corrected the behavior of the string conversion support.
12811 rules concerning conversion of buffers to strings (according to the ACPI
12812 specification) are as follows:
12814 ToDecimalString - explicit byte-wise conversion of buffer to string of
12815 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12817 conversion of buffer to string of hex values (0-FF) separated by commas.
12818 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12820 copy with no transform except NULL terminated. Any other implicit buffer-
12822 string conversion - byte-wise conversion of buffer to string of hex
12824 (0-FF) separated by spaces.
12826 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12828 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12830 one byte too short in the case of a node in the root scope. This could
12831 cause a fault during debug output.
12833 - Code and Data Size: Current and previous core subsystem library sizes
12835 shown below. These are the code and data sizes for the acpica.lib
12837 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12838 any ACPI driver or OSPM code. The debug version of the code includes the
12839 debug output trace mechanism and has a much larger code and data size.
12841 that these values will vary depending on the efficiency of the compiler
12843 the compiler options used during generation.
12846 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12847 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12849 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12850 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12853 2) iASL Compiler/Disassembler:
12855 - Fixed a Linux generation error.
12858 ----------------------------------------
12859 16 August 2004. Summary of changes for version 20040816:
12861 1) ACPI CA Core Subsystem:
12863 Designed and implemented support within the AML interpreter for the so-
12864 called "implicit return". This support returns the result of the last
12866 operation within a control method, in the absence of an explicit Return()
12867 operator. A few machines depend on this behavior, even though it is not
12868 explicitly supported by the ASL language. It is optional support that
12870 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12872 Removed support for the PCI_Config address space from the internal low
12874 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12875 support was not used internally, and would not work correctly anyway
12877 the PCI bus number and segment number were not supported. There are
12878 separate interfaces for PCI configuration space access because of the
12882 Code and Data Size: Current and previous core subsystem library sizes are
12883 shown below. These are the code and data sizes for the acpica.lib
12885 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12886 any ACPI driver or OSPM code. The debug version of the code includes the
12887 debug output trace mechanism and has a much larger code and data size.
12889 that these values will vary depending on the efficiency of the compiler
12891 the compiler options used during generation.
12894 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12895 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12897 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12898 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12901 2) iASL Compiler/Disassembler:
12903 Fixed a problem where constants in ASL expressions at the root level (not
12904 within a control method) could be inadvertently truncated during code
12905 generation. This problem was introduced in the 20040715 release.
12908 ----------------------------------------
12909 15 July 2004. Summary of changes for version 20040715:
12911 1) ACPI CA Core Subsystem:
12913 Restructured the internal HW GPE interfaces to pass/track the current
12915 of interrupts (enabled/disabled) in order to avoid possible deadlock and
12916 increase flexibility of the interfaces.
12918 Implemented a "lexicographical compare" for String and Buffer objects
12920 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
12922 as per further clarification to the ACPI specification. Behavior is
12924 to C library "strcmp".
12926 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
12927 external function. In the 32-bit non-debug case, the stack use has been
12928 reduced from 168 bytes to 32 bytes.
12930 Deployed a new run-time configuration flag,
12931 AcpiGbl_EnableInterpreterSlack,
12932 whose purpose is to allow the AML interpreter to forgive certain bad AML
12933 constructs. Default setting is FALSE.
12935 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
12937 support code. If enabled, it allows field access to go beyond the end of
12939 region definition if the field is within the region length rounded up to
12941 next access width boundary (a common coding error.)
12943 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
12944 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
12946 symbols are lowercased by the latest version of the AcpiSrc tool.
12948 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
12949 rename "Register" to simply "Reg" to prevent certain compilers from
12952 Code and Data Size: Current and previous core subsystem library sizes are
12953 shown below. These are the code and data sizes for the acpica.lib
12955 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12956 any ACPI driver or OSPM code. The debug version of the code includes the
12957 debug output trace mechanism and has a much larger code and data size.
12959 that these values will vary depending on the efficiency of the compiler
12961 the compiler options used during generation.
12964 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12965 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12967 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12968 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12971 2) iASL Compiler/Disassembler:
12973 Implemented full support for Package objects within the Case() operator.
12974 Note: The Break() operator is currently not supported within Case blocks
12975 (TermLists) as there is some question about backward compatibility with
12980 Fixed a problem where complex terms were not supported properly within
12984 Eliminated extraneous warning for compiler-emitted reserved names of the
12985 form "_T_x". (Used in Switch/Case operators.)
12987 Eliminated optimization messages for "_T_x" objects and small constants
12988 within the DefinitionBlock operator.
12991 ----------------------------------------
12992 15 June 2004. Summary of changes for version 20040615:
12994 1) ACPI CA Core Subsystem:
12996 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12998 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13001 All directory names in the entire source package are lower case, as they
13002 were in earlier releases.
13004 Implemented "Disassemble" command in the AML debugger that will
13006 a single control method.
13008 Code and Data Size: Current and previous core subsystem library sizes are
13009 shown below. These are the code and data sizes for the acpica.lib
13011 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13012 any ACPI driver or OSPM code. The debug version of the code includes the
13013 debug output trace mechanism and has a much larger code and data size.
13015 that these values will vary depending on the efficiency of the compiler
13017 the compiler options used during generation.
13020 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13021 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13024 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
13025 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
13028 2) iASL Compiler/Disassembler:
13030 Implemented support for Buffer and String objects (as per ACPI 2.0) for
13032 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
13035 All directory names in the entire source package are lower case, as they
13036 were in earlier releases.
13038 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
13041 Fixed an issue with the Windows version of the compiler where later
13043 of Windows place the FADT in the registry under the name "FADT" and not
13044 "FACP" as earlier versions did. This applies when using the -g or -
13045 d<nofilename> options. The compiler now looks for both strings as
13048 Fixed a problem with compiler namepath optimization where a namepath
13050 the Scope() operator could not be optimized if the namepath was a subpath
13052 the current scope path.
13054 ----------------------------------------
13055 27 May 2004. Summary of changes for version 20040527:
13057 1) ACPI CA Core Subsystem:
13059 Completed a new design and implementation for EBDA (Extended BIOS Data
13061 support in the RSDP scan code. The original code improperly scanned for
13063 EBDA by simply scanning from memory location 0 to 0x400. The correct
13065 is to first obtain the EBDA pointer from within the BIOS data area, then
13066 scan 1K of memory starting at the EBDA pointer. There appear to be few
13068 any machines that place the RSDP in the EBDA, however.
13070 Integrated a fix for a possible fault during evaluation of BufferField
13071 arguments. Obsolete code that was causing the problem was removed.
13073 Found and fixed a problem in the Field Support Code where data could be
13074 corrupted on a bit field read that starts on an aligned boundary but does
13075 not end on an aligned boundary. Merged the read/write "datum length"
13076 calculation code into a common procedure.
13078 Rolled in a couple of changes to the FreeBSD-specific header.
13081 Code and Data Size: Current and previous core subsystem library sizes are
13082 shown below. These are the code and data sizes for the acpica.lib
13084 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13085 any ACPI driver or OSPM code. The debug version of the code includes the
13086 debug output trace mechanism and has a much larger code and data size.
13088 that these values will vary depending on the efficiency of the compiler
13090 the compiler options used during generation.
13093 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13094 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13096 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13097 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13100 2) iASL Compiler/Disassembler:
13102 Fixed a generation warning produced by some overly-verbose compilers for
13106 ----------------------------------------
13107 14 May 2004. Summary of changes for version 20040514:
13109 1) ACPI CA Core Subsystem:
13111 Fixed a problem where hardware GPE enable bits sometimes not set properly
13112 during and after GPE method execution. Result of 04/27 changes.
13114 Removed extra "clear all GPEs" when sleeping/waking.
13116 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
13117 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
13119 the new AcpiEv* calls as appropriate.
13121 ACPI_OS_NAME was removed from the OS-specific headers. The default name
13123 now "Microsoft Windows NT" for maximum compatibility. However this can
13125 changed by modifying the acconfig.h file.
13127 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
13128 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
13130 Run _INI methods on ThermalZone objects. This is against the ACPI
13131 specification, but there is apparently ASL code in the field that has
13133 _INI methods, and apparently "other" AML interpreters execute them.
13135 Performed a full 16/32/64 bit lint that resulted in some small changes.
13137 Added a sleep simulation command to the AML debugger to test sleep code.
13139 Code and Data Size: Current and previous core subsystem library sizes are
13140 shown below. These are the code and data sizes for the acpica.lib
13142 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13143 any ACPI driver or OSPM code. The debug version of the code includes the
13144 debug output trace mechanism and has a much larger code and data size.
13146 that these values will vary depending on the efficiency of the compiler
13148 the compiler options used during generation.
13151 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13152 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13154 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13155 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13157 ----------------------------------------
13158 27 April 2004. Summary of changes for version 20040427:
13160 1) ACPI CA Core Subsystem:
13162 Completed a major overhaul of the GPE handling within ACPI CA. There are
13163 now three types of GPEs: wake-only, runtime-only, and combination
13165 The only GPEs allowed to be combination wake/run are for button-style
13166 devices such as a control-method power button, control-method sleep
13168 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
13170 referenced by any _PRW methods are marked for "runtime" and hardware
13171 enabled. Any GPE that is referenced by a _PRW method is marked for
13173 (and disabled at runtime). However, at sleep time, only those GPEs that
13174 have been specifically enabled for wake via the AcpiEnableGpe interface
13176 actually be hardware enabled.
13178 A new external interface has been added, AcpiSetGpeType(), that is meant
13180 be used by device drivers to force a GPE to a particular type. It will
13182 especially useful for the drivers for the button devices mentioned above.
13184 Completed restructuring of the ACPI CA initialization sequence so that
13185 default operation region handlers are installed before GPEs are
13187 and the _PRW methods are executed. This will prevent errors when the
13189 methods attempt to access system memory or I/O space.
13191 GPE enable/disable no longer reads the GPE enable register. We now keep
13193 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
13194 thus no longer depend on the hardware to maintain these bits.
13196 Always clear the wake status and fixed/GPE status bits before sleep, even
13199 Improved the AML debugger output for displaying the GPE blocks and their
13202 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
13206 Fixed a problem where the physical address was incorrectly calculated
13208 the Load() operator was used to directly load from an Operation Region
13210 loading from a Field object.) Also added check for minimum table length
13214 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
13217 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
13218 consistency with the other fields returned.
13220 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
13221 structure for each GPE in the system, so the size of this structure is
13224 CPU stack requirement reduction: Cleaned up the method execution and
13226 evaluation paths so that now a parameter structure is passed, instead of
13227 copying the various method parameters over and over again.
13229 In evregion.c: Correctly exit and reenter the interpreter region if and
13230 only if dispatching an operation region request to a user-installed
13232 Do not exit/reenter when dispatching to a default handler (e.g., default
13233 system memory or I/O handlers)
13236 Notes for updating drivers for the new GPE support. The following
13238 must be made to ACPI-related device drivers that are attached to one or
13240 GPEs: (This information will be added to the ACPI CA Programmer
13243 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
13245 explicitly call AcpiEnableGpe.
13246 2) There is a new interface called AcpiSetGpeType. This should be called
13247 before enabling the GPE. Also, this interface will automatically disable
13248 the GPE if it is currently enabled.
13249 3) AcpiEnableGpe no longer supports a GPE type flag.
13251 Specific drivers that must be changed:
13253 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
13254 AeGpeHandler, NULL);
13255 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
13256 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
13258 2) Button Drivers (Power, Lid, Sleep):
13259 Run _PRW method under parent device
13260 If _PRW exists: /* This is a control-method button */
13261 Extract GPE number and possibly GpeDevice
13262 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
13263 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
13265 For all other devices that have _PRWs, we automatically set the GPE type
13267 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
13269 must be done on a selective basis, usually requiring some kind of user
13271 to allow the user to pick the wake devices.
13274 Code and Data Size: Current and previous core subsystem library sizes are
13275 shown below. These are the code and data sizes for the acpica.lib
13277 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13278 any ACPI driver or OSPM code. The debug version of the code includes the
13279 debug output trace mechanism and has a much larger code and data size.
13281 that these values will vary depending on the efficiency of the compiler
13283 the compiler options used during generation.
13286 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13287 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13290 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13291 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13295 ----------------------------------------
13296 02 April 2004. Summary of changes for version 20040402:
13298 1) ACPI CA Core Subsystem:
13300 Fixed an interpreter problem where an indirect store through an ArgX
13301 parameter was incorrectly applying the "implicit conversion rules" during
13302 the store. From the ACPI specification: "If the target is a method local
13304 argument (LocalX or ArgX), no conversion is performed and the result is
13305 stored directly to the target". The new behavior is to disable implicit
13306 conversion during ALL stores to an ArgX.
13308 Changed the behavior of the _PRW method scan to ignore any and all errors
13309 returned by a given _PRW. This prevents the scan from aborting from the
13310 failure of any single _PRW.
13312 Moved the runtime configuration parameters from the global init procedure
13314 static variables in acglobal.h. This will allow the host to override the
13315 default values easily.
13317 Code and Data Size: Current and previous core subsystem library sizes are
13318 shown below. These are the code and data sizes for the acpica.lib
13320 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13321 any ACPI driver or OSPM code. The debug version of the code includes the
13322 debug output trace mechanism and has a much larger code and data size.
13324 that these values will vary depending on the efficiency of the compiler
13326 the compiler options used during generation.
13329 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13330 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13332 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13333 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13336 2) iASL Compiler/Disassembler:
13338 iASL now fully disassembles SSDTs. However, External() statements are
13340 generated automatically for unresolved symbols at this time. This is a
13341 planned feature for future implementation.
13343 Fixed a scoping problem in the disassembler that occurs when the type of
13345 target of a Scope() operator is overridden. This problem caused an
13346 incorrectly nested internal namespace to be constructed.
13348 Any warnings or errors that are emitted during disassembly are now
13350 out automatically so that the resulting file can be recompiled without
13354 ----------------------------------------
13355 26 March 2004. Summary of changes for version 20040326:
13357 1) ACPI CA Core Subsystem:
13359 Implemented support for "wake" GPEs via interaction between GPEs and the
13360 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
13361 identified as a WAKE GPE and by default will no longer be enabled at
13362 runtime. Previously, we were blindly enabling all GPEs with a
13364 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
13366 believe this has been the cause of thousands of "spurious" GPEs on some
13369 This new GPE behavior is can be reverted to the original behavior (enable
13370 ALL GPEs at runtime) via a runtime flag.
13372 Fixed a problem where aliased control methods could not access objects
13373 properly. The proper scope within the namespace was not initialized
13374 (transferred to the target of the aliased method) before executing the
13377 Fixed a potential race condition on internal object deletion on the
13379 object in AcpiEvaluateObject.
13381 Integrated a fix for resource descriptors where both _MEM and _MTP were
13382 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
13383 wide, 0x0F instead of 0x03.)
13385 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
13388 fault in some cases.
13390 Updated Notify() values for debug statements in evmisc.c
13392 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13394 Code and Data Size: Current and previous core subsystem library sizes are
13395 shown below. These are the code and data sizes for the acpica.lib
13397 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13398 any ACPI driver or OSPM code. The debug version of the code includes the
13399 debug output trace mechanism and has a much larger code and data size.
13401 that these values will vary depending on the efficiency of the compiler
13403 the compiler options used during generation.
13407 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13408 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13410 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13411 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13413 ----------------------------------------
13414 11 March 2004. Summary of changes for version 20040311:
13416 1) ACPI CA Core Subsystem:
13418 Fixed a problem where errors occurring during the parse phase of control
13419 method execution did not abort cleanly. For example, objects created and
13420 installed in the namespace were not deleted. This caused all subsequent
13421 invocations of the method to return the AE_ALREADY_EXISTS exception.
13423 Implemented a mechanism to force a control method to "Serialized"
13425 if the method attempts to create namespace objects. (The root of the
13426 AE_ALREADY_EXISTS problem.)
13428 Implemented support for the predefined _OSI "internal" control method.
13429 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13431 "Windows 2001.1", and can be easily upgraded for new strings as
13433 This feature will allow "other" operating systems to execute the fully
13434 tested, "Windows" code path through the ASL code
13436 Global Lock Support: Now allows multiple acquires and releases with any
13437 internal thread. Removed concept of "owning thread" for this special
13440 Fixed two functions that were inappropriately declaring large objects on
13442 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
13444 method execution considerably.
13446 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
13447 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
13449 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
13450 defined on the machine.
13452 Implemented two runtime options: One to force all control method
13454 to "Serialized" to mimic Windows behavior, another to disable _OSI
13456 if it causes problems on a given machine.
13458 Code and Data Size: Current and previous core subsystem library sizes are
13459 shown below. These are the code and data sizes for the acpica.lib
13461 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13462 any ACPI driver or OSPM code. The debug version of the code includes the
13463 debug output trace mechanism and has a much larger code and data size.
13465 that these values will vary depending on the efficiency of the compiler
13467 the compiler options used during generation.
13470 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13471 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13473 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13474 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13476 2) iASL Compiler/Disassembler:
13478 Fixed an array size problem for FreeBSD that would cause the compiler to
13481 ----------------------------------------
13482 20 February 2004. Summary of changes for version 20040220:
13485 1) ACPI CA Core Subsystem:
13487 Implemented execution of _SxD methods for Device objects in the
13488 GetObjectInfo interface.
13490 Fixed calls to _SST method to pass the correct arguments.
13492 Added a call to _SST on wake to restore to "working" state.
13494 Check for End-Of-Buffer failure case in the WalkResources interface.
13496 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
13497 structures to the beginning of the file.
13499 After wake, clear GPE status register(s) before enabling GPEs.
13501 After wake, clear/enable power button. (Perhaps we should clear/enable
13503 fixed events upon wake.)
13505 Fixed a couple of possible memory leaks in the Namespace manager.
13507 Integrated latest acnetbsd.h file.
13509 ----------------------------------------
13510 11 February 2004. Summary of changes for version 20040211:
13513 1) ACPI CA Core Subsystem:
13515 Completed investigation and implementation of the call-by-reference
13516 mechanism for control method arguments.
13518 Fixed a problem where a store of an object into an indexed package could
13519 fail if the store occurs within a different method than the method that
13520 created the package.
13522 Fixed a problem where the ToDecimal operator could return incorrect
13525 Fixed a problem where the CopyObject operator could fail on some of the
13527 obscure objects (e.g., Reference objects.)
13529 Improved the output of the Debug object to display buffer, package, and
13532 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
13534 the expected result.
13536 Added permanent ACPI_REPORT_ERROR macros for all instances of the
13537 ACPI_AML_INTERNAL exception.
13539 Integrated latest version of acfreebsd.h
13541 ----------------------------------------
13542 16 January 2004. Summary of changes for version 20040116:
13544 The purpose of this release is primarily to update the copyright years in
13545 each module, thus causing a huge number of diffs. There are a few small
13546 functional changes, however.
13548 1) ACPI CA Core Subsystem:
13550 Improved error messages when there is a problem finding one or more of
13552 required base ACPI tables
13554 Reintroduced the definition of APIC_HEADER in actbl.h
13556 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
13558 Removed extraneous reference to NewObj in dsmthdat.c
13562 Fixed a problem introduced in December that disabled the correct
13564 of Resource Templates
13567 ----------------------------------------
13568 03 December 2003. Summary of changes for version 20031203:
13570 1) ACPI CA Core Subsystem:
13572 Changed the initialization of Operation Regions during subsystem
13573 init to perform two entire walks of the ACPI namespace; The first
13574 to initialize the regions themselves, the second to execute the
13575 _REG methods. This fixed some interdependencies across _REG
13576 methods found on some machines.
13578 Fixed a problem where a Store(Local0, Local1) could simply update
13579 the object reference count, and not create a new copy of the
13580 object if the Local1 is uninitialized.
13582 Implemented support for the _SST reserved method during sleep
13585 Implemented support to clear the SLP_TYP and SLP_EN bits when
13586 waking up, this is apparently required by some machines.
13588 When sleeping, clear the wake status only if SleepState is not S5.
13590 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
13591 pointer arithmetic advanced a string pointer too far.
13593 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
13594 could be returned if the requested table has not been loaded.
13596 Within the support for IRQ resources, restructured the handling of
13597 the active and edge/level bits.
13599 Fixed a few problems in AcpiPsxExecute() where memory could be
13600 leaked under certain error conditions.
13602 Improved error messages for the cases where the ACPI mode could
13605 Code and Data Size: Current and previous core subsystem library
13606 sizes are shown below. These are the code and data sizes for the
13607 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13608 these values do not include any ACPI driver or OSPM code. The
13609 debug version of the code includes the debug output trace
13610 mechanism and has a much larger code and data size. Note that
13611 these values will vary depending on the efficiency of the compiler
13612 and the compiler options used during generation.
13614 Previous Release (20031029):
13615 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13616 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13618 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13619 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13621 2) iASL Compiler/Disassembler:
13623 Implemented a fix for the iASL disassembler where a bad index was
13624 generated. This was most noticeable on 64-bit platforms
13627 ----------------------------------------
13628 29 October 2003. Summary of changes for version 20031029:
13630 1) ACPI CA Core Subsystem:
13633 Fixed a problem where a level-triggered GPE with an associated
13634 _Lxx control method was incorrectly cleared twice.
13636 Fixed a problem with the Field support code where an access can
13637 occur beyond the end-of-region if the field is non-aligned but
13638 extends to the very end of the parent region (resulted in an
13639 AE_AML_REGION_LIMIT exception.)
13641 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13642 would not get invoked on an RTC event. The RTC event bitmasks for
13643 the PM1 registers were not being initialized properly.
13645 Implemented support for executing _STA and _INI methods for
13646 Processor objects. Although this is currently not part of the
13647 ACPI specification, there is existing ASL code that depends on the
13648 init-time execution of these methods.
13650 Implemented and deployed a GetDescriptorName function to decode
13651 the various types of internal descriptors. Guards against null
13652 descriptors during debug output also.
13654 Implemented and deployed a GetNodeName function to extract the 4-
13655 character namespace node name. This function simplifies the debug
13656 and error output, as well as guarding against null pointers during
13659 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13660 simplify the debug and error output of 64-bit integers. This
13661 macro replaces the HIDWORD and LODWORD macros for dumping these
13664 Updated the implementation of the Stall() operator to only call
13665 AcpiOsStall(), and also return an error if the operand is larger
13666 than 255. This preserves the required behavior of not
13667 relinquishing the processor, as would happen if AcpiOsSleep() was
13668 called for "long stalls".
13670 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13671 initialized are now treated as NOOPs.
13673 Cleaned up a handful of warnings during 64-bit generation.
13675 Fixed a reported error where and incorrect GPE number was passed
13676 to the GPE dispatch handler. This value is only used for error
13677 output, however. Used this opportunity to clean up and streamline
13678 the GPE dispatch code.
13680 Code and Data Size: Current and previous core subsystem library
13681 sizes are shown below. These are the code and data sizes for the
13682 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13683 these values do not include any ACPI driver or OSPM code. The
13685 debug version of the code includes the debug output trace
13686 mechanism and has a much larger code and data size. Note that
13687 these values will vary depending on the efficiency of the compiler
13688 and the compiler options used during generation.
13690 Previous Release (20031002):
13691 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13692 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13694 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13695 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13698 2) iASL Compiler/Disassembler:
13700 Updated the iASL compiler to return an error if the operand to the
13701 Stall() operator is larger than 255.
13704 ----------------------------------------
13705 02 October 2003. Summary of changes for version 20031002:
13708 1) ACPI CA Core Subsystem:
13710 Fixed a problem with Index Fields where the index was not
13711 incremented for fields that require multiple writes to the
13712 index/data registers (Fields that are wider than the data
13715 Fixed a problem with all Field objects where a write could go
13716 beyond the end-of-field if the field was larger than the access
13717 granularity and therefore required multiple writes to complete the
13718 request. An extra write beyond the end of the field could happen
13721 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13722 would incorrectly be returned if the width of the Data Register
13723 was larger than the specified field access width.
13725 Completed fixes for LoadTable() and Unload() and verified their
13726 operation. Implemented full support for the "DdbHandle" object
13727 throughout the ACPI CA subsystem.
13729 Implemented full support for the MADT and ECDT tables in the ACPI
13730 CA header files. Even though these tables are not directly
13731 consumed by ACPI CA, the header definitions are useful for ACPI
13734 Integrated resource descriptor fixes posted to the Linux ACPI
13735 list. This included checks for minimum descriptor length, and
13736 support for trailing NULL strings within descriptors that have
13737 optional string elements.
13739 Code and Data Size: Current and previous core subsystem library
13740 sizes are shown below. These are the code and data sizes for the
13741 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13742 these values do not include any ACPI driver or OSPM code. The
13743 debug version of the code includes the debug output trace
13744 mechanism and has a much larger code and data size. Note that
13745 these values will vary depending on the efficiency of the compiler
13746 and the compiler options used during generation.
13748 Previous Release (20030918):
13749 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13750 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13752 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13753 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13758 Implemented detection of non-ASCII characters within the input
13759 source ASL file. This catches attempts to compile binary (AML)
13760 files early in the compile, with an informative error message.
13762 Fixed a problem where the disassembler would fault if the output
13763 filename could not be generated or if the output file could not be
13766 ----------------------------------------
13767 18 September 2003. Summary of changes for version 20030918:
13770 1) ACPI CA Core Subsystem:
13772 Found and fixed a longstanding problem with the late execution of
13773 the various deferred AML opcodes (such as Operation Regions,
13774 Buffer Fields, Buffers, and Packages). If the name string
13775 specified for the name of the new object placed the object in a
13776 scope other than the current scope, the initialization/execution
13777 of the opcode failed. The solution to this problem was to
13778 implement a mechanism where the late execution of such opcodes
13779 does not attempt to lookup/create the name a second time in an
13780 incorrect scope. This fixes the "region size computed
13781 incorrectly" problem.
13783 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13784 Global Lock AE_BAD_PARAMETER error.
13786 Fixed several 64-bit issues with prototypes, casting and data
13789 Removed duplicate prototype from acdisasm.h
13791 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13793 Code and Data Size: Current and previous core subsystem library
13794 sizes are shown below. These are the code and data sizes for the
13795 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13796 these values do not include any ACPI driver or OSPM code. The
13797 debug version of the code includes the debug output trace
13798 mechanism and has a much larger code and data size. Note that
13799 these values will vary depending on the efficiency of the compiler
13800 and the compiler options used during generation.
13804 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13805 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13807 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13808 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13813 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13814 correct sleep time in seconds.
13816 ----------------------------------------
13817 14 July 2003. Summary of changes for version 20030619:
13819 1) ACPI CA Core Subsystem:
13821 Parse SSDTs in order discovered, as opposed to reverse order
13824 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13831 Dynamically allocate SDT list (suggested by Andi Kleen)
13833 proc function return value cleanups (Andi Kleen)
13835 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13837 Make it so acpismp=force works (reported by Andrew Morton)
13840 ----------------------------------------
13841 19 June 2003. Summary of changes for version 20030619:
13843 1) ACPI CA Core Subsystem:
13845 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13847 Do not acquire a semaphore in the S5 shutdown path.
13849 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13851 Fix sleep/stall code reversal. (Andi Kleen)
13853 Revert a change having to do with control method calling
13858 acpiphp update (Takayoshi Kochi)
13860 Export acpi_disabled for sonypi (Stelian Pop)
13862 Mention acpismp=force in config help
13864 Re-add acpitable.c and acpismp=force. This improves backwards
13866 compatibility and also cleans up the code to a significant degree.
13868 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13870 ----------------------------------------
13871 22 May 2003. Summary of changes for version 20030522:
13873 1) ACPI CA Core Subsystem:
13875 Found and fixed a reported problem where an AE_NOT_FOUND error
13876 occurred occasionally during _BST evaluation. This turned out to
13877 be an Owner ID allocation issue where a called method did not get
13878 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13879 ID UINT16 would wraparound so that the ID would be the same as the
13880 caller's and the called method would delete the caller's
13883 Implemented extended error reporting for control methods that are
13884 aborted due to a run-time exception. Output includes the exact
13885 AML instruction that caused the method abort, a dump of the method
13886 locals and arguments at the time of the abort, and a trace of all
13887 nested control method calls.
13889 Modified the interpreter to allow the creation of buffers of zero
13890 length from the AML code. Implemented new code to ensure that no
13891 attempt is made to actually allocate a memory buffer (of length
13892 zero) - instead, a simple buffer object with a NULL buffer pointer
13893 and length zero is created. A warning is no longer issued when
13894 the AML attempts to create a zero-length buffer.
13896 Implemented a workaround for the "leading asterisk issue" in
13897 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13898 asterisk is automatically removed if present in any HID, UID, or
13899 CID strings. The iASL compiler will still flag this asterisk as
13902 Implemented full support for _CID methods that return a package of
13903 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
13904 now additionally returns a device _CID list if present. This
13905 required a change to the external interface in order to pass an
13906 ACPI_BUFFER object as a parameter since the _CID list is of
13909 Fixed a problem with the new AE_SAME_HANDLER exception where
13910 handler initialization code did not know about this exception.
13912 Code and Data Size: Current and previous core subsystem library
13913 sizes are shown below. These are the code and data sizes for the
13914 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13915 these values do not include any ACPI driver or OSPM code. The
13916 debug version of the code includes the debug output trace
13917 mechanism and has a much larger code and data size. Note that
13918 these values will vary depending on the efficiency of the compiler
13919 and the compiler options used during generation.
13921 Previous Release (20030509):
13922 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13923 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13925 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13926 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13931 Fixed a bug in which we would reinitialize the ACPI interrupt
13932 after it was already working, thus disabling all ACPI and the IRQs
13933 for any other device sharing the interrupt. (Thanks to Stian
13936 Toshiba driver update (John Belmonte)
13938 Return only 0 or 1 for our interrupt handler status (Andrew
13944 Fixed a reported problem where multiple (nested) ElseIf()
13945 statements were not handled correctly by the compiler, resulting
13946 in incorrect warnings and incorrect AML code. This was a problem
13947 in both the ASL parser and the code generator.
13952 Added changes to existing interfaces, new exception codes, and new
13953 text concerning reference count object management versus garbage
13956 ----------------------------------------
13957 09 May 2003. Summary of changes for version 20030509.
13960 1) ACPI CA Core Subsystem:
13962 Changed the subsystem initialization sequence to hold off
13963 installation of address space handlers until the hardware has been
13964 initialized and the system has entered ACPI mode. This is because
13965 the installation of space handlers can cause _REG methods to be
13966 run. Previously, the _REG methods could potentially be run before
13967 ACPI mode was enabled.
13969 Fixed some memory leak issues related to address space handler and
13970 notify handler installation. There were some problems with the
13971 reference count mechanism caused by the fact that the handler
13972 objects are shared across several namespace objects.
13974 Fixed a reported problem where reference counts within the
13975 namespace were not properly updated when named objects created by
13976 method execution were deleted.
13978 Fixed a reported problem where multiple SSDTs caused a deletion
13979 issue during subsystem termination. Restructured the table data
13980 structures to simplify the linked lists and the related code.
13982 Fixed a problem where the table ID associated with secondary
13983 tables (SSDTs) was not being propagated into the namespace objects
13984 created by those tables. This would only present a problem for
13985 tables that are unloaded at run-time, however.
13987 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
13988 type as the length parameter (instead of UINT32).
13990 Solved a long-standing problem where an ALREADY_EXISTS error
13991 appears on various systems. This problem could happen when there
13992 are multiple PCI_Config operation regions under a single PCI root
13993 bus. This doesn't happen very frequently, but there are some
13994 systems that do this in the ASL.
13996 Fixed a reported problem where the internal DeleteNode function
13997 was incorrectly handling the case where a namespace node was the
13998 first in the parent's child list, and had additional peers (not
13999 the only child, but first in the list of children.)
14001 Code and Data Size: Current core subsystem library sizes are shown
14002 below. These are the code and data sizes for the acpica.lib
14003 produced by the Microsoft Visual C++ 6.0 compiler, and these
14004 values do not include any ACPI driver or OSPM code. The debug
14005 version of the code includes the debug output trace mechanism and
14006 has a much larger code and data size. Note that these values will
14007 vary depending on the efficiency of the compiler and the compiler
14008 options used during generation.
14011 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14012 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14014 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
14015 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
14020 Allow ":" in OS override string (Ducrot Bruno)
14022 Kobject fix (Greg KH)
14025 3 iASL Compiler/Disassembler:
14027 Fixed a problem in the generation of the C source code files (AML
14028 is emitted in C source statements for BIOS inclusion) where the
14029 Ascii dump that appears within a C comment at the end of each line
14030 could cause a compile time error if the AML sequence happens to
14031 have an open comment or close comment sequence embedded.
14034 ----------------------------------------
14035 24 April 2003. Summary of changes for version 20030424.
14038 1) ACPI CA Core Subsystem:
14040 Support for big-endian systems has been implemented. Most of the
14041 support has been invisibly added behind big-endian versions of the
14042 ACPI_MOVE_* macros.
14044 Fixed a problem in AcpiHwDisableGpeBlock() and
14045 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
14046 low level hardware write routine. The offset parameter was
14047 actually eliminated from the low level read/write routines because
14048 they had become obsolete.
14050 Fixed a problem where a handler object was deleted twice during
14051 the removal of a fixed event handler.
14056 A fix for SMP systems with link devices was contributed by
14060 (2.5) Return whether we handled the interrupt in our IRQ handler.
14061 (Linux ISRs no longer return void, so we can propagate the handler
14062 return value from the ACPI CA core back to the OS.)
14068 The ACPI CA Programmer Reference has been updated to reflect new
14069 interfaces and changes to existing interfaces.
14071 ----------------------------------------
14072 28 March 2003. Summary of changes for version 20030328.
14074 1) ACPI CA Core Subsystem:
14076 The GPE Block Device support has been completed. New interfaces
14077 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
14078 interfaces (enable, disable, clear, getstatus) have been split
14079 into separate interfaces for Fixed Events and General Purpose
14080 Events (GPEs) in order to support GPE Block Devices properly.
14082 Fixed a problem where the error message "Failed to acquire
14083 semaphore" would appear during operations on the embedded
14086 Code and Data Size: Current core subsystem library sizes are shown
14087 below. These are the code and data sizes for the acpica.lib
14088 produced by the Microsoft Visual C++ 6.0 compiler, and these
14089 values do not include any ACPI driver or OSPM code. The debug
14090 version of the code includes the debug output trace mechanism and
14091 has a much larger code and data size. Note that these values will
14092 vary depending on the efficiency of the compiler and the compiler
14093 options used during generation.
14096 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14097 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14099 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14100 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14103 ----------------------------------------
14104 28 February 2003. Summary of changes for version 20030228.
14107 1) ACPI CA Core Subsystem:
14109 The GPE handling and dispatch code has been completely overhauled
14110 in preparation for support of GPE Block Devices (ID ACPI0006).
14111 This affects internal data structures and code only; there should
14112 be no differences visible externally. One new file has been
14115 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
14116 fields that are used to determine the GPE block lengths. The
14117 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
14118 structures are ignored. This is per the ACPI specification but it
14119 isn't very clear. The full 256 Block 0/1 GPEs are now supported
14120 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
14122 In the SCI interrupt handler, removed the read of the PM1_CONTROL
14123 register to look at the SCI_EN bit. On some machines, this read
14124 causes an SMI event and greatly slows down SCI events. (This may
14125 in fact be the cause of slow battery status response on some
14128 Fixed a problem where a store of a NULL string to a package object
14129 could cause the premature deletion of the object. This was seen
14130 during execution of the battery _BIF method on some systems,
14131 resulting in no battery data being returned.
14133 Added AcpiWalkResources interface to simplify parsing of resource
14136 Code and Data Size: Current core subsystem library sizes are shown
14137 below. These are the code and data sizes for the acpica.lib
14138 produced by the Microsoft Visual C++ 6.0 compiler, and these
14139 values do not include any ACPI driver or OSPM code. The debug
14140 version of the code includes the debug output trace mechanism and
14141 has a much larger code and data size. Note that these values will
14142 vary depending on the efficiency of the compiler and the compiler
14143 options used during generation.
14146 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14147 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14149 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14150 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14155 S3 fixes (Ole Rohne)
14157 Update ACPI PHP driver with to use new acpi_walk_resource API
14160 Add S4BIOS support (Pavel Machek)
14162 Map in entire table before performing checksum (John Stultz)
14164 Expand the mem= cmdline to allow the specification of reserved and
14165 ACPI DATA blocks (Pavel Machek)
14167 Never use ACPI on VISWS
14169 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
14171 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
14172 causing us to think that some systems support C2 when they really
14175 Do not count processor objects for non-present CPUs (Thanks to
14181 Fixed a problem where ASL include files could not be found and
14184 Added support for the _PDC reserved name.
14187 ----------------------------------------
14188 22 January 2003. Summary of changes for version 20030122.
14191 1) ACPI CA Core Subsystem:
14193 Added a check for constructs of the form: Store (Local0, Local0)
14194 where Local0 is not initialized. Apparently, some BIOS
14195 programmers believe that this is a NOOP. Since this store doesn't
14196 do anything anyway, the new prototype behavior will ignore this
14197 error. This is a case where we can relax the strict checking in
14198 the interpreter in the name of compatibility.
14203 The AcpiSrc Source Conversion Utility has been released with the
14204 Linux package for the first time. This is the utility that is
14205 used to convert the ACPI CA base source code to the Linux version.
14207 (Both) Handle P_BLK lengths shorter than 6 more gracefully
14209 (Both) Move more headers to include/acpi, and delete an unused
14212 (Both) Move drivers/acpi/include directory to include/acpi
14214 (Both) Boot functions don't use cmdline, so don't pass it around
14216 (Both) Remove include of unused header (Adrian Bunk)
14218 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
14220 former now also includes the latter, acpiphp.h only needs the one,
14223 (2.5) Make it possible to select method of bios restoring after S3
14224 resume. [=> no more ugly ifdefs] (Pavel Machek)
14226 (2.5) Make proc write interfaces work (Pavel Machek)
14228 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
14230 (2.5) Break out ACPI Perf code into its own module, under cpufreq
14231 (Dominik Brodowski)
14233 (2.4) S4BIOS support (Ducrot Bruno)
14235 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
14241 Added support to disassemble SSDT and PSDTs.
14243 Implemented support to obtain SSDTs from the Windows registry if
14247 ----------------------------------------
14248 09 January 2003. Summary of changes for version 20030109.
14250 1) ACPI CA Core Subsystem:
14252 Changed the behavior of the internal Buffer-to-String conversion
14253 function. The current ACPI specification states that the contents
14254 of the buffer are "converted to a string of two-character
14255 hexadecimal numbers, each separated by a space". Unfortunately,
14256 this definition is not backwards compatible with existing ACPI 1.0
14257 implementations (although the behavior was not defined in the ACPI
14258 1.0 specification). The new behavior simply copies data from the
14259 buffer to the string until a null character is found or the end of
14260 the buffer is reached. The new String object is always null
14261 terminated. This problem was seen during the generation of _BIF
14262 battery data where incorrect strings were returned for battery
14263 type, etc. This will also require an errata to the ACPI
14266 Renamed all instances of NATIVE_UINT and NATIVE_INT to
14267 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
14269 Copyright in all module headers (both Linux and non-Linux) has be
14272 Code and Data Size: Current core subsystem library sizes are shown
14273 below. These are the code and data sizes for the acpica.lib
14274 produced by the Microsoft Visual C++ 6.0 compiler, and these
14275 values do not include any ACPI driver or OSPM code. The debug
14276 version of the code includes the debug output trace mechanism and
14277 has a much larger code and data size. Note that these values will
14278 vary depending on the efficiency of the compiler and the compiler
14279 options used during generation.
14282 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14283 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14285 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14286 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14291 Fixed an oops on module insertion/removal (Matthew Tippett)
14293 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
14295 (2.5) Replace pr_debug (Randy Dunlap)
14297 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
14299 (Both) Eliminate spawning of thread from timer callback, in favor
14302 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
14304 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
14306 (Both) Add missing statics to button.c (Pavel Machek)
14308 Several changes have been made to the source code translation
14309 utility that generates the Linux Code in order to make the code
14312 All typedefs on structs and unions have been removed in keeping
14313 with the Linux coding style.
14315 Removed the non-Linux SourceSafe module revision number from each
14318 Completed major overhaul of symbols to be lowercased for linux.
14319 Doubled the number of symbols that are lowercased.
14321 Fixed a problem where identifiers within procedure headers and
14322 within quotes were not fully lower cased (they were left with a
14325 Some C macros whose only purpose is to allow the generation of 16-
14326 bit code are now completely removed in the Linux code, increasing
14327 readability and maintainability.
14329 ----------------------------------------
14331 12 December 2002. Summary of changes for version 20021212.
14334 1) ACPI CA Core Subsystem:
14336 Fixed a problem where the creation of a zero-length AML Buffer
14337 would cause a fault.
14339 Fixed a problem where a Buffer object that pointed to a static AML
14340 buffer (in an ACPI table) could inadvertently be deleted, causing
14343 Fixed a problem where a user buffer (passed in to the external
14344 ACPI CA interfaces) could be overwritten if the buffer was too
14345 small to complete the operation, causing memory corruption.
14347 Fixed a problem in the Buffer-to-String conversion code where a
14348 string of length one was always returned, regardless of the size
14349 of the input Buffer object.
14351 Removed the NATIVE_CHAR data type across the entire source due to
14352 lack of need and lack of consistent use.
14354 Code and Data Size: Current core subsystem library sizes are shown
14355 below. These are the code and data sizes for the acpica.lib
14356 produced by the Microsoft Visual C++ 6.0 compiler, and these
14357 values do not include any ACPI driver or OSPM code. The debug
14358 version of the code includes the debug output trace mechanism and
14359 has a much larger code and data size. Note that these values will
14360 vary depending on the efficiency of the compiler and the compiler
14361 options used during generation.
14364 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14365 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14367 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14368 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14371 ----------------------------------------
14372 05 December 2002. Summary of changes for version 20021205.
14374 1) ACPI CA Core Subsystem:
14376 Fixed a problem where a store to a String or Buffer object could
14377 cause corruption of the DSDT if the object type being stored was
14378 the same as the target object type and the length of the object
14379 being stored was equal to or smaller than the original (existing)
14380 target object. This was seen to cause corruption of battery _BIF
14381 buffers if the _BIF method modified the buffer on the fly.
14383 Fixed a problem where an internal error was generated if a control
14384 method invocation was used in an OperationRegion, Buffer, or
14385 Package declaration. This was caused by the deferred parsing of
14386 the control method and thus the deferred creation of the internal
14387 method object. The solution to this problem was to create the
14388 internal method object at the moment the method is encountered in
14389 the first pass - so that subsequent references to the method will
14390 able to obtain the required parameter count and thus properly
14391 parse the method invocation. This problem presented itself as an
14392 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14394 Fixed a problem where the internal String object copy routine did
14395 not always allocate sufficient memory for the target String object
14396 and caused memory corruption. This problem was seen to cause
14397 "Allocation already present in list!" errors as memory allocation
14400 Implemented a new function for the evaluation of namespace objects
14401 that allows the specification of the allowable return object
14402 types. This simplifies a lot of code that checks for a return
14403 object of one or more specific objects returned from the
14404 evaluation (such as _STA, etc.) This may become and external
14405 function if it would be useful to ACPI-related drivers.
14407 Completed another round of prefixing #defines with "ACPI_" for
14410 Completed additional code restructuring to allow more modular
14411 linking for iASL compiler and AcpiExec. Several files were split
14412 creating new files. New files: nsparse.c dsinit.c evgpe.c
14414 Implemented an abort mechanism to terminate an executing control
14415 method via the AML debugger. This feature is useful for debugging
14416 control methods that depend (wait) for specific hardware
14419 Code and Data Size: Current core subsystem library sizes are shown
14420 below. These are the code and data sizes for the acpica.lib
14421 produced by the Microsoft Visual C++ 6.0 compiler, and these
14422 values do not include any ACPI driver or OSPM code. The debug
14423 version of the code includes the debug output trace mechanism and
14424 has a much larger code and data size. Note that these values will
14425 vary depending on the efficiency of the compiler and the compiler
14426 options used during generation.
14429 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14430 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14432 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14433 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14436 2) iASL Compiler/Disassembler
14438 Fixed a compiler code generation problem for "Interrupt" Resource
14439 Descriptors. If specified in the ASL, the optional "Resource
14440 Source Index" and "Resource Source" fields were not inserted into
14441 the correct location within the AML resource descriptor, creating
14442 an invalid descriptor.
14444 Fixed a disassembler problem for "Interrupt" resource descriptors.
14445 The optional "Resource Source Index" and "Resource Source" fields
14449 ----------------------------------------
14450 22 November 2002. Summary of changes for version 20021122.
14453 1) ACPI CA Core Subsystem:
14455 Fixed a reported problem where an object stored to a Method Local
14456 or Arg was not copied to a new object during the store - the
14457 object pointer was simply copied to the Local/Arg. This caused
14458 all subsequent operations on the Local/Arg to also affect the
14459 original source of the store operation.
14461 Fixed a problem where a store operation to a Method Local or Arg
14462 was not completed properly if the Local/Arg contained a reference
14463 (from RefOf) to a named field. The general-purpose store-to-
14464 namespace-node code is now used so that this case is handled
14467 Fixed a problem where the internal object copy routine would cause
14468 a protection fault if the object being copied was a Package and
14469 contained either 1) a NULL package element or 2) a nested sub-
14472 Fixed a problem with the GPE initialization that resulted from an
14473 ambiguity in the ACPI specification. One section of the
14474 specification states that both the address and length of the GPE
14475 block must be zero if the block is not supported. Another section
14476 implies that only the address need be zero if the block is not
14477 supported. The code has been changed so that both the address and
14478 the length must be non-zero to indicate a valid GPE block (i.e.,
14479 if either the address or the length is zero, the GPE block is
14482 Code and Data Size: Current core subsystem library sizes are shown
14483 below. These are the code and data sizes for the acpica.lib
14484 produced by the Microsoft Visual C++ 6.0 compiler, and these
14485 values do not include any ACPI driver or OSPM code. The debug
14486 version of the code includes the debug output trace mechanism and
14487 has a much larger code and data size. Note that these values will
14488 vary depending on the efficiency of the compiler and the compiler
14489 options used during generation.
14492 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14493 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14495 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14496 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14501 Cleaned up EC driver. Exported an external EC read/write
14502 interface. By going through this, other drivers (most notably
14503 sonypi) will be able to serialize access to the EC.
14506 3) iASL Compiler/Disassembler
14508 Implemented support to optionally generate include files for both
14509 ASM and C (the -i switch). This simplifies BIOS development by
14510 automatically creating include files that contain external
14511 declarations for the symbols that are created within the
14513 (optionally generated) ASM and C AML source files.
14516 ----------------------------------------
14517 15 November 2002. Summary of changes for version 20021115.
14519 1) ACPI CA Core Subsystem:
14521 Fixed a memory leak problem where an error during resolution of
14523 method arguments during a method invocation from another method
14524 failed to cleanup properly by deleting all successfully resolved
14527 Fixed a problem where the target of the Index() operator was not
14528 correctly constructed if the source object was a package. This
14529 problem has not been detected because the use of a target operand
14530 with Index() is very rare.
14532 Fixed a problem with the Index() operator where an attempt was
14533 made to delete the operand objects twice.
14535 Fixed a problem where an attempt was made to delete an operand
14536 twice during execution of the CondRefOf() operator if the target
14539 Implemented the first of perhaps several internal create object
14540 functions that create and initialize a specific object type. This
14541 consolidates duplicated code wherever the object is created, thus
14542 shrinking the size of the subsystem.
14544 Implemented improved debug/error messages for errors that occur
14545 during nested method invocations. All executing method pathnames
14546 are displayed (with the error) as the call stack is unwound - thus
14549 Fixed a problem introduced in the 10/02 release that caused
14550 premature deletion of a buffer object if a buffer was used as an
14551 ASL operand where an integer operand is required (Thus causing an
14552 implicit object conversion from Buffer to Integer.) The change in
14553 the 10/02 release was attempting to fix a memory leak (albeit
14556 Code and Data Size: Current core subsystem library sizes are shown
14557 below. These are the code and data sizes for the acpica.lib
14558 produced by the Microsoft Visual C++ 6.0 compiler, and these
14559 values do not include any ACPI driver or OSPM code. The debug
14560 version of the code includes the debug output trace mechanism and
14561 has a much larger code and data size. Note that these values will
14562 vary depending on the efficiency of the compiler and the compiler
14563 options used during generation.
14566 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14567 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14569 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14570 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14575 Changed the implementation of the ACPI semaphores to use down()
14576 instead of down_interruptable(). It is important that the
14577 execution of ACPI control methods not be interrupted by signals.
14578 Methods must run to completion, or the system may be left in an
14579 unknown/unstable state.
14581 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
14585 3) iASL Compiler/Disassembler
14588 Changed the default location of output files. All output files
14589 are now placed in the current directory by default instead of in
14590 the directory of the source file. This change may affect some
14591 existing makefiles, but it brings the behavior of the compiler in
14592 line with other similar tools. The location of the output files
14593 can be overridden with the -p command line switch.
14596 ----------------------------------------
14597 11 November 2002. Summary of changes for version 20021111.
14600 0) ACPI Specification 2.0B is released and is now available at:
14601 http://www.acpi.info/index.html
14604 1) ACPI CA Core Subsystem:
14606 Implemented support for the ACPI 2.0 SMBus Operation Regions.
14607 This includes the early detection and handoff of the request to
14608 the SMBus region handler (avoiding all of the complex field
14609 support code), and support for the bidirectional return packet
14610 from an SMBus write operation. This paves the way for the
14611 development of SMBus drivers in each host operating system.
14613 Fixed a problem where the semaphore WAIT_FOREVER constant was
14614 defined as 32 bits, but must be 16 bits according to the ACPI
14615 specification. This had the side effect of causing ASL
14616 Mutex/Event timeouts even though the ASL code requested a wait
14617 forever. Changed all internal references to the ACPI timeout
14618 parameter to 16 bits to prevent future problems. Changed the name
14619 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
14621 Code and Data Size: Current core subsystem library sizes are shown
14622 below. These are the code and data sizes for the acpica.lib
14623 produced by the Microsoft Visual C++ 6.0 compiler, and these
14624 values do not include any ACPI driver or OSPM code. The debug
14625 version of the code includes the debug output trace mechanism and
14626 has a much larger code and data size. Note that these values will
14627 vary depending on the efficiency of the compiler and the compiler
14628 options used during generation.
14631 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14632 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14634 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14635 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14640 Module loading/unloading fixes (John Cagle)
14643 3) iASL Compiler/Disassembler
14645 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14647 Implemented support for the disassembly of all SMBus protocol
14648 keywords (SMBQuick, SMBWord, etc.)
14650 ----------------------------------------
14651 01 November 2002. Summary of changes for version 20021101.
14654 1) ACPI CA Core Subsystem:
14656 Fixed a problem where platforms that have a GPE1 block but no GPE0
14657 block were not handled correctly. This resulted in a "GPE
14658 overlap" error message. GPE0 is no longer required.
14660 Removed code added in the previous release that inserted nodes
14661 into the namespace in alphabetical order. This caused some side-
14662 effects on various machines. The root cause of the problem is
14663 still under investigation since in theory, the internal ordering
14664 of the namespace nodes should not matter.
14667 Enhanced error reporting for the case where a named object is not
14668 found during control method execution. The full ACPI namepath
14669 (name reference) of the object that was not found is displayed in
14672 Note: as a result of the overhaul of the namespace object types in
14673 the previous release, the namespace nodes for the predefined
14674 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14675 instead of ACPI_TYPE_ANY. This simplifies the namespace
14676 management code but may affect code that walks the namespace tree
14677 looking for specific object types.
14679 Code and Data Size: Current core subsystem library sizes are shown
14680 below. These are the code and data sizes for the acpica.lib
14681 produced by the Microsoft Visual C++ 6.0 compiler, and these
14682 values do not include any ACPI driver or OSPM code. The debug
14683 version of the code includes the debug output trace mechanism and
14684 has a much larger code and data size. Note that these values will
14685 vary depending on the efficiency of the compiler and the compiler
14686 options used during generation.
14689 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14690 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14692 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14693 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14698 Fixed a problem introduced in the previous release where the
14699 Processor and Thermal objects were not recognized and installed in
14700 /proc. This was related to the scope type change described above.
14703 3) iASL Compiler/Disassembler
14705 Implemented the -g option to get all of the required ACPI tables
14706 from the registry and save them to files (Windows version of the
14707 compiler only.) The required tables are the FADT, FACS, and DSDT.
14709 Added ACPI table checksum validation during table disassembly in
14710 order to catch corrupted tables.
14713 ----------------------------------------
14714 22 October 2002. Summary of changes for version 20021022.
14716 1) ACPI CA Core Subsystem:
14718 Implemented a restriction on the Scope operator that the target
14719 must already exist in the namespace at the time the operator is
14720 encountered (during table load or method execution). In other
14721 words, forward references are not allowed and Scope() cannot
14722 create a new object. This changes the previous behavior where the
14723 interpreter would create the name if not found. This new behavior
14724 correctly enables the search-to-root algorithm during namespace
14725 lookup of the target name. Because of this upsearch, this fixes
14726 the known Compaq _SB_.OKEC problem and makes both the AML
14727 interpreter and iASL compiler compatible with other ACPI
14730 Completed a major overhaul of the internal ACPI object types for
14731 the ACPI Namespace and the associated operand objects. Many of
14732 these types had become obsolete with the introduction of the two-
14733 pass namespace load. This cleanup simplifies the code and makes
14734 the entire namespace load mechanism much clearer and easier to
14737 Improved debug output for tracking scope opening/closing to help
14738 diagnose scoping issues. The old scope name as well as the new
14739 scope name are displayed. Also improved error messages for
14740 problems with ASL Mutex objects and error messages for GPE
14743 Cleaned up the namespace dump code, removed obsolete code.
14745 All string output (for all namespace/object dumps) now uses the
14746 common ACPI string output procedure which handles escapes properly
14747 and does not emit non-printable characters.
14749 Fixed some issues with constants in the 64-bit version of the
14750 local C library (utclib.c)
14755 EC Driver: No longer attempts to acquire the Global Lock at
14759 3) iASL Compiler/Disassembler
14761 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14762 2 opcodes outside of a control method. This means that the
14763 "executable" operators (versus the "namespace" operators) cannot
14764 be used at the table level; they can only be used within a control
14767 Implemented the restriction on the Scope() operator where the
14768 target must already exist in the namespace at the time the
14769 operator is encountered (during ASL compilation). In other words,
14770 forward references are not allowed and Scope() cannot create a new
14771 object. This makes the iASL compiler compatible with other ACPI
14772 implementations and makes the Scope() implementation adhere to the
14773 ACPI specification.
14775 Fixed a problem where namepath optimization for the Alias operator
14776 was optimizing the wrong path (of the two namepaths.) This caused
14777 a "Missing alias link" error message.
14779 Fixed a problem where an "unknown reserved name" warning could be
14780 incorrectly generated for names like "_SB" when the trailing
14781 underscore is not used in the original ASL.
14783 Fixed a problem where the reserved name check did not handle
14784 NamePaths with multiple NameSegs correctly. The first nameseg of
14785 the NamePath was examined instead of the last NameSeg.
14788 ----------------------------------------
14790 02 October 2002. Summary of changes for this release.
14793 1) ACPI CA Core Subsystem version 20021002:
14795 Fixed a problem where a store/copy of a string to an existing
14796 string did not always set the string length properly in the String
14799 Fixed a reported problem with the ToString operator where the
14800 behavior was identical to the ToHexString operator instead of just
14801 simply converting a raw buffer to a string data type.
14803 Fixed a problem where CopyObject and the other "explicit"
14804 conversion operators were not updating the internal namespace node
14805 type as part of the store operation.
14807 Fixed a memory leak during implicit source operand conversion
14808 where the original object was not deleted if it was converted to a
14809 new object of a different type.
14811 Enhanced error messages for all problems associated with namespace
14812 lookups. Common procedure generates and prints the lookup name as
14813 well as the formatted status.
14815 Completed implementation of a new design for the Alias support
14816 within the namespace. The existing design did not handle the case
14817 where a new object was assigned to one of the two names due to the
14818 use of an explicit conversion operator, resulting in the two names
14819 pointing to two different objects. The new design simply points
14820 the Alias name to the original name node - not to the object.
14821 This results in a level of indirection that must be handled in the
14822 name resolution mechanism.
14824 Code and Data Size: Current core subsystem library sizes are shown
14825 below. These are the code and data sizes for the acpica.lib
14826 produced by the Microsoft Visual C++ 6.0 compiler, and these
14827 values do not include any ACPI driver or OSPM code. The debug
14828 version of the code includes the debug output trace mechanism and
14829 has a larger code and data size. Note that these values will vary
14830 depending on the efficiency of the compiler and the compiler
14831 options used during generation.
14834 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14835 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14837 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14838 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14843 Initialize thermal driver's timer before it is used. (Knut
14846 Allow handling negative celsius values. (Kochi Takayoshi)
14848 Fix thermal management and make trip points. R/W (Pavel Machek)
14850 Fix /proc/acpi/sleep. (P. Christeas)
14852 IA64 fixes. (David Mosberger)
14854 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14856 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14860 3) iASL Compiler/Disassembler
14862 Clarified some warning/error messages.
14865 ----------------------------------------
14866 18 September 2002. Summary of changes for this release.
14869 1) ACPI CA Core Subsystem version 20020918:
14871 Fixed a reported problem with reference chaining (via the Index()
14872 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14873 The definition of these operators includes the dereferencing of
14874 all chained references to return information on the base object.
14876 Fixed a problem with stores to indexed package elements - the
14877 existing code would not complete the store if an "implicit
14878 conversion" was not performed. In other words, if the existing
14879 object (package element) was to be replaced completely, the code
14880 didn't handle this case.
14882 Relaxed typechecking on the ASL "Scope" operator to allow the
14883 target name to refer to an object of type Integer, String, or
14884 Buffer, in addition to the scoping object types (Device,
14885 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14886 This allows existing AML code that has workarounds for a bug in
14887 Windows to function properly. A warning is issued, however. This
14888 affects both the AML interpreter and the iASL compiler. Below is
14889 an example of this type of ASL code:
14895 Fixed some reported problems with 64-bit integer support in the
14896 local implementation of C library functions (clib.c)
14901 Use ACPI fix map region instead of IOAPIC region, since it is
14902 undefined in non-SMP.
14904 Ensure that the SCI has the proper polarity and trigger, even on
14905 systems that do not have an interrupt override entry in the MADT.
14907 2.5 big driver reorganization (Pat Mochel)
14909 Use early table mapping code from acpitable.c (Andi Kleen)
14911 New blacklist entries (Andi Kleen)
14913 Blacklist improvements. Split blacklist code out into a separate
14914 file. Move checking the blacklist to very early. Previously, we
14915 would use ACPI tables, and then halfway through init, check the
14916 blacklist -- too late. Now, it's early enough to completely fall-
14920 3) iASL Compiler/Disassembler version 20020918:
14922 Fixed a problem where the typechecking code didn't know that an
14923 alias could point to a method. In other words, aliases were not
14924 being dereferenced during typechecking.
14927 ----------------------------------------
14928 29 August 2002. Summary of changes for this release.
14930 1) ACPI CA Core Subsystem Version 20020829:
14932 If the target of a Scope() operator already exists, it must be an
14933 object type that actually opens a scope -- such as a Device,
14934 Method, Scope, etc. This is a fatal runtime error. Similar error
14935 check has been added to the iASL compiler also.
14937 Tightened up the namespace load to disallow multiple names in the
14938 same scope. This previously was allowed if both objects were of
14939 the same type. (i.e., a lookup was the same as entering a new
14945 Ensure that the ACPI interrupt has the proper trigger and
14948 local_irq_disable is extraneous. (Matthew Wilcox)
14950 Make "acpi=off" actually do what it says, and not use the ACPI
14951 interpreter *or* the tables.
14953 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
14957 3) iASL Compiler/Disassembler Version 20020829:
14959 Implemented namepath optimization for name declarations. For
14960 example, a declaration like "Method (\_SB_.ABCD)" would get
14961 optimized to "Method (ABCD)" if the declaration is within the
14962 \_SB_ scope. This optimization is in addition to the named
14963 reference path optimization first released in the previous
14964 version. This would seem to complete all possible optimizations
14965 for namepaths within the ASL/AML.
14967 If the target of a Scope() operator already exists, it must be an
14968 object type that actually opens a scope -- such as a Device,
14969 Method, Scope, etc.
14971 Implemented a check and warning for unreachable code in the same
14972 block below a Return() statement.
14974 Fixed a problem where the listing file was not generated if the
14975 compiler aborted if the maximum error count was exceeded (200).
14977 Fixed a problem where the typechecking of method return values was
14978 broken. This includes the check for a return value when the
14979 method is invoked as a TermArg (a return value is expected.)
14981 Fixed a reported problem where EOF conditions during a quoted
14982 string or comment caused a fault.
14985 ----------------------------------------
14986 15 August 2002. Summary of changes for this release.
14988 1) ACPI CA Core Subsystem Version 20020815:
14990 Fixed a reported problem where a Store to a method argument that
14991 contains a reference did not perform the indirect store correctly.
14992 This problem was created during the conversion to the new
14993 reference object model - the indirect store to a method argument
14994 code was not updated to reflect the new model.
14996 Reworked the ACPI mode change code to better conform to ACPI 2.0,
14997 handle corner cases, and improve code legibility (Kochi Takayoshi)
14999 Fixed a problem with the pathname parsing for the carat (^)
15000 prefix. The heavy use of the carat operator by the new namepath
15001 optimization in the iASL compiler uncovered a problem with the AML
15002 interpreter handling of this prefix. In the case where one or
15003 more carats precede a single nameseg, the nameseg was treated as
15004 standalone and the search rule (to root) was inadvertently
15005 applied. This could cause both the iASL compiler and the
15006 interpreter to find the wrong object or to miss the error that
15007 should occur if the object does not exist at that exact pathname.
15009 Found and fixed the problem where the HP Pavilion DSDT would not
15010 load. This was a relatively minor tweak to the table loading code
15011 (a problem caused by the unexpected encounter with a method
15012 invocation not within a control method), but it does not solve the
15013 overall issue of the execution of AML code at the table level.
15014 This investigation is still ongoing.
15016 Code and Data Size: Current core subsystem library sizes are shown
15017 below. These are the code and data sizes for the acpica.lib
15018 produced by the Microsoft Visual C++ 6.0 compiler, and these
15019 values do not include any ACPI driver or OSPM code. The debug
15020 version of the code includes the debug output trace mechanism and
15021 has a larger code and data size. Note that these values will vary
15022 depending on the efficiency of the compiler and the compiler
15023 options used during generation.
15026 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15027 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15029 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
15030 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
15035 Remove redundant slab.h include (Brad Hards)
15037 Fix several bugs in thermal.c (Herbert Nachtnebel)
15039 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
15041 Change acpi_system_suspend to use updated irq functions (Pavel
15044 Export acpi_get_firmware_table (Matthew Wilcox)
15046 Use proper root proc entry for ACPI (Kochi Takayoshi)
15048 Fix early-boot table parsing (Bjorn Helgaas)
15051 3) iASL Compiler/Disassembler
15053 Reworked the compiler options to make them more consistent and to
15054 use two-letter options where appropriate. We were running out of
15055 sensible letters. This may break some makefiles, so check the
15056 current options list by invoking the compiler with no parameters.
15058 Completed the design and implementation of the ASL namepath
15059 optimization option for the compiler. This option optimizes all
15060 references to named objects to the shortest possible path. The
15061 first attempt tries to utilize a single nameseg (4 characters) and
15062 the "search-to-root" algorithm used by the interpreter. If that
15063 cannot be used (because either the name is not in the search path
15064 or there is a conflict with another object with the same name),
15065 the pathname is optimized using the carat prefix (usually a
15066 shorter string than specifying the entire path from the root.)
15068 Implemented support to obtain the DSDT from the Windows registry
15069 (when the disassembly option is specified with no input file).
15070 Added this code as the implementation for AcpiOsTableOverride in
15071 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
15072 utility) to scan memory for the DSDT to the AcpiOsTableOverride
15073 function in the DOS OSL to make the disassembler truly OS
15076 Implemented a new option to disassemble and compile in one step.
15077 When used without an input filename, this option will grab the
15078 DSDT from the local machine, disassemble it, and compile it in one
15081 Added a warning message for invalid escapes (a backslash followed
15082 by any character other than the allowable escapes). This catches
15083 the quoted string error "\_SB_" (which should be "\\_SB_" ).
15085 Also, there are numerous instances in the ACPI specification where
15088 Added a compiler option to disable all optimizations. This is
15089 basically the "compatibility mode" because by using this option,
15090 the AML code will come out exactly the same as other ASL
15093 Added error messages for incorrectly ordered dependent resource
15094 functions. This includes: missing EndDependentFn macro at end of
15095 dependent resource list, nested dependent function macros (both
15096 start and end), and missing StartDependentFn macro. These are
15097 common errors that should be caught at compile time.
15099 Implemented _OSI support for the disassembler and compiler. _OSI
15100 must be included in the namespace for proper disassembly (because
15101 the disassembler must know the number of arguments.)
15103 Added an "optimization" message type that is optional (off by
15104 default). This message is used for all optimizations - including
15105 constant folding, integer optimization, and namepath optimization.
15107 ----------------------------------------
15108 25 July 2002. Summary of changes for this release.
15111 1) ACPI CA Core Subsystem Version 20020725:
15113 The AML Disassembler has been enhanced to produce compilable ASL
15114 code and has been integrated into the iASL compiler (see below) as
15115 well as the single-step disassembly for the AML debugger and the
15116 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
15117 resource templates and macros are fully supported. The
15118 disassembler has been tested on over 30 different AML files,
15119 producing identical AML when the resulting disassembled ASL file
15120 is recompiled with the same ASL compiler.
15122 Modified the Resource Manager to allow zero interrupts and zero
15123 dma channels during the GetCurrentResources call. This was
15124 causing problems on some platforms.
15126 Added the AcpiOsRedirectOutput interface to the OSL to simplify
15127 output redirection for the AcpiOsPrintf and AcpiOsVprintf
15130 Code and Data Size: Current core subsystem library sizes are shown
15131 below. These are the code and data sizes for the acpica.lib
15132 produced by the Microsoft Visual C++ 6.0 compiler, and these
15133 values do not include any ACPI driver or OSPM code. The debug
15134 version of the code includes the debug output trace mechanism and
15135 has a larger code and data size. Note that these values will vary
15136 depending on the efficiency of the compiler and the compiler
15137 options used during generation.
15140 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15141 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15143 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15144 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15149 Fixed a panic in the EC driver (Dominik Brodowski)
15151 Implemented checksum of the R/XSDT itself during Linux table scan
15157 The AML disassembler is integrated into the compiler. The "-d"
15158 option invokes the disassembler to completely disassemble an
15159 input AML file, producing as output a text ASL file with the
15160 extension ".dsl" (to avoid name collisions with existing .asl
15161 source files.) A future enhancement will allow the disassembler
15162 to obtain the BIOS DSDT from the registry under Windows.
15164 Fixed a problem with the VendorShort and VendorLong resource
15165 descriptors where an invalid AML sequence was created.
15167 Implemented a fix for BufferData term in the ASL parser. It was
15168 inadvertently defined twice, allowing invalid syntax to pass and
15169 causing reduction conflicts.
15171 Fixed a problem where the Ones opcode could get converted to a
15172 value of zero if "Ones" was used where a byte, word or dword value
15173 was expected. The 64-bit value is now truncated to the correct
15174 size with the correct value.
15178 ----------------------------------------
15179 02 July 2002. Summary of changes for this release.
15182 1) ACPI CA Core Subsystem Version 20020702:
15184 The Table Manager code has been restructured to add several new
15185 features. Tables that are not required by the core subsystem
15186 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
15187 validated in any way and are returned from AcpiGetFirmwareTable if
15188 requested. The AcpiOsTableOverride interface is now called for
15189 each table that is loaded by the subsystem in order to allow the
15190 host to override any table it chooses. Previously, only the DSDT
15191 could be overridden. Added one new files, tbrsdt.c and
15194 Fixed a problem with the conversion of internal package objects to
15195 external objects (when a package is returned from a control
15196 method.) The return buffer length was set to zero instead of the
15197 proper length of the package object.
15199 Fixed a reported problem with the use of the RefOf and DeRefOf
15200 operators when passing reference arguments to control methods. A
15201 new type of Reference object is used internally for references
15202 produced by the RefOf operator.
15204 Added additional error messages in the Resource Manager to explain
15205 AE_BAD_DATA errors when they occur during resource parsing.
15207 Split the AcpiEnableSubsystem into two primitives to enable a
15208 finer granularity initialization sequence. These two calls should
15209 be called in this order: AcpiEnableSubsystem (flags),
15210 AcpiInitializeObjects (flags). The flags parameter remains the
15216 Updated the ACPI utilities module to understand the new style of
15217 fully resolved package objects that are now returned from the core
15218 subsystem. This eliminates errors of the form:
15220 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
15221 acpi_utils-0430 [145] acpi_evaluate_reference:
15222 Invalid element in package (not a device reference)
15224 The method evaluation utility uses the new buffer allocation
15225 scheme instead of calling AcpiEvaluate Object twice.
15227 Added support for ECDT. This allows the use of the Embedded
15229 Controller before the namespace has been fully initialized, which
15230 is necessary for ACPI 2.0 support, and for some laptops to
15231 initialize properly. (Laptops using ECDT are still rare, so only
15232 limited testing was performed of the added functionality.)
15234 Fixed memory leaks in the EC driver.
15236 Eliminated a brittle code structure in acpi_bus_init().
15238 Eliminated the acpi_evaluate() helper function in utils.c. It is
15239 no longer needed since acpi_evaluate_object can optionally
15240 allocate memory for the return object.
15242 Implemented fix for keyboard hang when getting battery readings on
15243 some systems (Stephen White)
15245 PCI IRQ routing update (Dominik Brodowski)
15247 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
15250 ----------------------------------------
15251 11 June 2002. Summary of changes for this release.
15254 1) ACPI CA Core Subsystem Version 20020611:
15256 Fixed a reported problem where constants such as Zero and One
15257 appearing within _PRT packages were not handled correctly within
15258 the resource manager code. Originally reported against the ASL
15259 compiler because the code generator now optimizes integers to
15260 their minimal AML representation (i.e. AML constants if possible.)
15261 The _PRT code now handles all AML constant opcodes correctly
15262 (Zero, One, Ones, Revision).
15264 Fixed a problem with the Concatenate operator in the AML
15265 interpreter where a buffer result object was incorrectly marked as
15266 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
15268 All package sub-objects are now fully resolved before they are
15269 returned from the external ACPI interfaces. This means that name
15270 strings are resolved to object handles, and constant operators
15271 (Zero, One, Ones, Revision) are resolved to Integers.
15273 Implemented immediate resolution of the AML Constant opcodes
15274 (Zero, One, Ones, Revision) to Integer objects upon detection
15275 within the AML stream. This has simplified and reduced the
15276 generated code size of the subsystem by eliminating about 10
15277 switch statements for these constants (which previously were
15278 contained in Reference objects.) The complicating issues are that
15279 the Zero opcode is used as a "placeholder" for unspecified
15280 optional target operands and stores to constants are defined to be
15283 Code and Data Size: Current core subsystem library sizes are shown
15284 below. These are the code and data sizes for the acpica.lib
15285 produced by the Microsoft Visual C++ 6.0 compiler, and these
15286 values do not include any ACPI driver or OSPM code. The debug
15287 version of the code includes the debug output trace mechanism and
15288 has a larger code and data size. Note that these values will vary
15289 depending on the efficiency of the compiler and the compiler
15290 options used during generation.
15293 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15294 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15296 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15297 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15303 Added preliminary support for obtaining _TRA data for PCI root
15304 bridges (Bjorn Helgaas).
15307 3) iASL Compiler Version X2046:
15309 Fixed a problem where the "_DDN" reserved name was defined to be a
15310 control method with one argument. There are no arguments, and
15311 _DDN does not have to be a control method.
15313 Fixed a problem with the Linux version of the compiler where the
15314 source lines printed with error messages were the wrong lines.
15315 This turned out to be the "LF versus CR/LF" difference between
15316 Windows and Unix. This appears to be the longstanding issue
15317 concerning listing output and error messages.
15319 Fixed a problem with the Linux version of compiler where opcode
15320 names within error messages were wrong. This was caused by a
15321 slight difference in the output of the Flex tool on Linux versus
15324 Fixed a problem with the Linux compiler where the hex output files
15325 contained some garbage data caused by an internal buffer overrun.
15328 ----------------------------------------
15329 17 May 2002. Summary of changes for this release.
15332 1) ACPI CA Core Subsystem Version 20020517:
15334 Implemented a workaround to an BIOS bug discovered on the HP
15335 OmniBook where the FADT revision number and the table size are
15336 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
15337 behavior is to fallback to using only the ACPI 1.0 fields of the
15338 FADT if the table is too small to be a ACPI 2.0 table as claimed
15339 by the revision number. Although this is a BIOS bug, this is a
15340 case where the workaround is simple enough and with no side
15341 effects, so it seemed prudent to add it. A warning message is
15344 Implemented minimum size checks for the fixed-length ACPI tables -
15345 - the FADT and FACS, as well as consistency checks between the
15346 revision number and the table size.
15348 Fixed a reported problem in the table override support where the
15349 new table pointer was incorrectly treated as a physical address
15350 instead of a logical address.
15352 Eliminated the use of the AE_AML_ERROR exception and replaced it
15353 with more descriptive codes.
15355 Fixed a problem where an exception would occur if an ASL Field was
15356 defined with no named Field Units underneath it (used by some
15359 Code and Data Size: Current core subsystem library sizes are shown
15360 below. These are the code and data sizes for the acpica.lib
15361 produced by the Microsoft Visual C++ 6.0 compiler, and these
15362 values do not include any ACPI driver or OSPM code. The debug
15363 version of the code includes the debug output trace mechanism and
15364 has a larger code and data size. Note that these values will vary
15365 depending on the efficiency of the compiler and the compiler
15366 options used during generation.
15369 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15370 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15372 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15373 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15379 Much work done on ACPI init (MADT and PCI IRQ routing support).
15380 (Paul D. and Dominik Brodowski)
15382 Fix PCI IRQ-related panic on boot (Sam Revitch)
15384 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
15386 Fix "MHz" typo (Dominik Brodowski)
15388 Fix RTC year 2000 issue (Dominik Brodowski)
15390 Preclude multiple button proc entries (Eric Brunet)
15392 Moved arch-specific code out of include/platform/aclinux.h
15394 3) iASL Compiler Version X2044:
15396 Implemented error checking for the string used in the EISAID macro
15397 (Usually used in the definition of the _HID object.) The code now
15398 strictly enforces the PnP format - exactly 7 characters, 3
15399 uppercase letters and 4 hex digits.
15401 If a raw string is used in the definition of the _HID object
15402 (instead of the EISAID macro), the string must contain all
15403 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15406 Implemented checking for invalid use of ACPI reserved names for
15407 most of the name creation operators (Name, Device, Event, Mutex,
15408 OperationRegion, PowerResource, Processor, and ThermalZone.)
15409 Previously, this check was only performed for control methods.
15411 Implemented an additional check on the Name operator to emit an
15412 error if a reserved name that must be implemented in ASL as a
15413 control method is used. We know that a reserved name must be a
15414 method if it is defined with input arguments.
15416 The warning emitted when a namespace object reference is not found
15417 during the cross reference phase has been changed into an error.
15418 The "External" directive should be used for names defined in other
15422 4) Tools and Utilities
15424 The 16-bit tools (adump16 and aexec16) have been regenerated and
15427 Fixed a problem with the output of both acpidump and adump16 where
15428 the indentation of closing parentheses and brackets was not
15430 aligned properly with the parent block.
15433 ----------------------------------------
15434 03 May 2002. Summary of changes for this release.
15437 1) ACPI CA Core Subsystem Version 20020503:
15439 Added support a new OSL interface that allows the host operating
15441 system software to override the DSDT found in the firmware -
15442 AcpiOsTableOverride. With this interface, the OSL can examine the
15443 version of the firmware DSDT and replace it with a different one
15446 Added new external interfaces for accessing ACPI registers from
15447 device drivers and other system software - AcpiGetRegister and
15448 AcpiSetRegister. This was simply an externalization of the
15449 existing AcpiHwBitRegister interfaces.
15451 Fixed a regression introduced in the previous build where the
15452 ASL/AML CreateField operator always returned an error,
15453 "destination must be a NS Node".
15455 Extended the maximum time (before failure) to successfully enable
15456 ACPI mode to 3 seconds.
15458 Code and Data Size: Current core subsystem library sizes are shown
15459 below. These are the code and data sizes for the acpica.lib
15460 produced by the Microsoft Visual C++ 6.0 compiler, and these
15461 values do not include any ACPI driver or OSPM code. The debug
15462 version of the code includes the debug output trace mechanism and
15463 has a larger code and data size. Note that these values will vary
15464 depending on the efficiency of the compiler and the compiler
15465 options used during generation.
15468 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15469 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15471 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15472 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15477 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
15478 free. While 3 out of 4 of our in-house systems work fine, the last
15479 one still hangs when testing the LAPIC timer.
15481 Renamed many files in 2.5 kernel release to omit "acpi_" from the
15484 Added warning on boot for Presario 711FR.
15486 Sleep improvements (Pavel Machek)
15488 ACPI can now be built without CONFIG_PCI enabled.
15490 IA64: Fixed memory map functions (JI Lee)
15493 3) iASL Compiler Version X2043:
15495 Added support to allow the compiler to be integrated into the MS
15496 VC++ development environment for one-button compilation of single
15497 files or entire projects -- with error-to-source-line mapping.
15499 Implemented support for compile-time constant folding for the
15500 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
15501 specification. This allows the ASL writer to use expressions
15502 instead of Integer/Buffer/String constants in terms that must
15503 evaluate to constants at compile time and will also simplify the
15504 emitted AML in any such sub-expressions that can be folded
15505 (evaluated at compile-time.) This increases the size of the
15506 compiler significantly because a portion of the ACPI CA AML
15507 interpreter is included within the compiler in order to pre-
15508 evaluate constant expressions.
15511 Fixed a problem with the "Unicode" ASL macro that caused the
15512 compiler to fault. (This macro is used in conjunction with the
15513 _STR reserved name.)
15515 Implemented an AML opcode optimization to use the Zero, One, and
15516 Ones opcodes where possible to further reduce the size of integer
15517 constants and thus reduce the overall size of the generated AML
15520 Implemented error checking for new reserved terms for ACPI version
15523 Implemented the -qr option to display the current list of ACPI
15524 reserved names known to the compiler.
15526 Implemented the -qc option to display the current list of ASL
15527 operators that are allowed within constant expressions and can
15528 therefore be folded at compile time if the operands are constants.
15533 Updated the Programmer's Reference for new interfaces, data types,
15534 and memory allocation model options.
15536 Updated the iASL Compiler User Reference to apply new format and
15537 add information about new features and options.
15539 ----------------------------------------
15540 19 April 2002. Summary of changes for this release.
15542 1) ACPI CA Core Subsystem Version 20020419:
15544 The source code base for the Core Subsystem has been completely
15545 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
15546 versions. The Lint option files used are included in the
15547 /acpi/generate/lint directory.
15549 Implemented enhanced status/error checking across the entire
15550 Hardware manager subsystem. Any hardware errors (reported from
15551 the OSL) are now bubbled up and will abort a running control
15555 Fixed a problem where the per-ACPI-table integer width (32 or 64)
15556 was stored only with control method nodes, causing a fault when
15557 non-control method code was executed during table loading. The
15558 solution implemented uses a global variable to indicate table
15559 width across the entire ACPI subsystem. Therefore, ACPI CA does
15560 not support mixed integer widths across different ACPI tables
15563 Fixed a problem where NULL extended fields (X fields) in an ACPI
15564 2.0 ACPI FADT caused the table load to fail. Although the
15565 existing ACPI specification is a bit fuzzy on this topic, the new
15566 behavior is to fall back on a ACPI 1.0 field if the corresponding
15567 ACPI 2.0 X field is zero (even though the table revision indicates
15568 a full ACPI 2.0 table.) The ACPI specification will be updated to
15569 clarify this issue.
15571 Fixed a problem with the SystemMemory operation region handler
15572 where memory was always accessed byte-wise even if the AML-
15573 specified access width was larger than a byte. This caused
15574 problems on systems with memory-mapped I/O. Memory is now
15575 accessed with the width specified. On systems that do not support
15576 non-aligned transfers, a check is made to guarantee proper address
15577 alignment before proceeding in order to avoid an AML-caused
15578 alignment fault within the kernel.
15581 Fixed a problem with the ExtendedIrq resource where only one byte
15582 of the 4-byte Irq field was extracted.
15584 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
15585 function was out of date and required a rewrite.
15587 Code and Data Size: Current core subsystem library sizes are shown
15588 below. These are the code and data sizes for the acpica.lib
15589 produced by the Microsoft Visual C++ 6.0 compiler, and these
15590 values do not include any ACPI driver or OSPM code. The debug
15591 version of the code includes the debug output trace mechanism and
15592 has a larger code and data size. Note that these values will vary
15593 depending on the efficiency of the compiler and the compiler
15594 options used during generation.
15597 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15598 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15600 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15601 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15606 PCI IRQ routing fixes (Dominik Brodowski)
15609 3) iASL Compiler Version X2042:
15611 Implemented an additional compile-time error check for a field
15612 unit whose size + minimum access width would cause a run-time
15613 access beyond the end-of-region. Previously, only the field size
15614 itself was checked.
15616 The Core subsystem and iASL compiler now share a common parse
15617 object in preparation for compile-time evaluation of the type
15618 3/4/5 ASL operators.
15621 ----------------------------------------
15622 Summary of changes for this release: 03_29_02
15624 1) ACPI CA Core Subsystem Version 20020329:
15626 Implemented support for late evaluation of TermArg operands to
15627 Buffer and Package objects. This allows complex expressions to be
15628 used in the declarations of these object types.
15630 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15631 1.0, if the field was larger than 32 bits, it was returned as a
15632 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15633 the field is returned as a buffer only if the field is larger than
15634 64 bits. The TableRevision is now considered when making this
15635 conversion to avoid incompatibility with existing ASL code.
15637 Implemented logical addressing for AcpiOsGetRootPointer. This
15638 allows an RSDP with either a logical or physical address. With
15639 this support, the host OS can now override all ACPI tables with
15640 one logical RSDP. Includes implementation of "typed" pointer
15641 support to allow a common data type for both physical and logical
15642 pointers internally. This required a change to the
15643 AcpiOsGetRootPointer interface.
15645 Implemented the use of ACPI 2.0 Generic Address Structures for all
15646 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15647 mapped I/O for these ACPI features.
15649 Initialization now ignores not only non-required tables (All
15650 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
15651 not validate the table headers of unrecognized tables.
15653 Fixed a problem where a notify handler could only be
15654 installed/removed on an object of type Device. All "notify"
15656 objects are now supported -- Devices, Processor, Power, and
15659 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15660 critical information is returned when this debug level is enabled.
15662 Code and Data Size: Current core subsystem library sizes are shown
15663 below. These are the code and data sizes for the acpica.lib
15664 produced by the Microsoft Visual C++ 6.0 compiler, and these
15665 values do not include any ACPI driver or OSPM code. The debug
15666 version of the code includes the debug output trace mechanism and
15667 has a larger code and data size. Note that these values will vary
15668 depending on the efficiency of the compiler and the compiler
15669 options used during generation.
15672 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15673 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15675 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15676 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15681 The processor driver (acpi_processor.c) now fully supports ACPI
15682 2.0-based processor performance control (e.g. Intel(R)
15683 SpeedStep(TM) technology) Note that older laptops that only have
15684 the Intel "applet" interface are not supported through this. The
15685 'limit' and 'performance' interface (/proc) are fully functional.
15686 [Note that basic policy for controlling performance state
15687 transitions will be included in the next version of ospmd.] The
15688 idle handler was modified to more aggressively use C2, and PIIX4
15689 errata handling underwent a complete overhaul (big thanks to
15690 Dominik Brodowski).
15692 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15693 based devices in the ACPI namespace are now dynamically bound
15694 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15695 This allows, among other things, ACPI to resolve bus numbers for
15696 subordinate PCI bridges.
15698 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15699 entries defined underneath PCI bridges.
15701 Added IBM 600E to bad bios list due to invalid _ADR value for
15702 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15704 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15705 (acpi.c, mpparse.c) -- stay tuned.
15707 Added back visual differentiation between fixed-feature and
15708 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15709 button/power/PWRF) to simplify button identification.
15711 We no longer use -Wno-unused when compiling debug. Please ignore
15712 any "_THIS_MODULE defined but not used" messages.
15714 Can now shut down the system using "magic sysrq" key.
15717 3) iASL Compiler version 2041:
15719 Fixed a problem where conversion errors for hex/octal/decimal
15720 constants were not reported.
15722 Implemented a fix for the General Register template Address field.
15723 This field was 8 bits when it should be 64.
15725 Fixed a problem where errors/warnings were no longer being emitted
15726 within the listing output file.
15728 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15729 exactly 4 characters, alphanumeric only.
15734 ----------------------------------------
15735 Summary of changes for this release: 03_08_02
15738 1) ACPI CA Core Subsystem Version 20020308:
15740 Fixed a problem with AML Fields where the use of the "AccessAny"
15741 keyword could cause an interpreter error due to attempting to read
15742 or write beyond the end of the parent Operation Region.
15744 Fixed a problem in the SystemMemory Operation Region handler where
15745 an attempt was made to map memory beyond the end of the region.
15746 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15747 errors on some Linux systems.
15749 Fixed a problem where the interpreter/namespace "search to root"
15750 algorithm was not functioning for some object types. Relaxed the
15751 internal restriction on the search to allow upsearches for all
15752 external object types as well as most internal types.
15757 We now use safe_halt() macro versus individual calls to sti | hlt.
15759 Writing to the processor limit interface should now work. "echo 1"
15760 will increase the limit, 2 will decrease, and 0 will reset to the
15767 Fixed segfault on Linux version.
15770 ----------------------------------------
15771 Summary of changes for this release: 02_25_02
15773 1) ACPI CA Core Subsystem:
15776 Fixed a problem where the GPE bit masks were not initialized
15777 properly, causing erratic GPE behavior.
15779 Implemented limited support for multiple calling conventions. The
15780 code can be generated with either the VPL (variable parameter
15781 list, or "C") convention, or the FPL (fixed parameter list, or
15782 "Pascal") convention. The core subsystem is about 3.4% smaller
15783 when generated with FPL.
15788 Re-add some /proc/acpi/event functionality that was lost during
15791 Resolved issue with /proc events for fixed-feature buttons showing
15792 up as the system device.
15794 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15796 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15798 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15800 Fixed limit interface & usage to fix bugs with passive cooling
15803 Restructured PRT support.
15806 ----------------------------------------
15807 Summary of changes for this label: 02_14_02
15810 1) ACPI CA Core Subsystem:
15812 Implemented support in AcpiLoadTable to allow loading of FACS and
15815 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15816 been removed. All 64-bit platforms should be migrated to the ACPI
15817 2.0 tables. The actbl71.h header has been removed from the source
15820 All C macros defined within the subsystem have been prefixed with
15821 "ACPI_" to avoid collision with other system include files.
15823 Removed the return value for the two AcpiOsPrint interfaces, since
15824 it is never used and causes lint warnings for ignoring the return
15827 Added error checking to all internal mutex acquire and release
15828 calls. Although a failure from one of these interfaces is
15829 probably a fatal system error, these checks will cause the
15830 immediate abort of the currently executing method or interface.
15832 Fixed a problem where the AcpiSetCurrentResources interface could
15833 fault. This was a side effect of the deployment of the new memory
15836 Fixed a couple of problems with the Global Lock support introduced
15837 in the last major build. The "common" (1.0/2.0) internal FACS was
15838 being overwritten with the FACS signature and clobbering the
15839 Global Lock pointer. Also, the actual firmware FACS was being
15840 unmapped after construction of the "common" FACS, preventing
15841 access to the actual Global Lock field within it. The "common"
15842 internal FACS is no longer installed as an actual ACPI table; it
15843 is used simply as a global.
15845 Code and Data Size: Current core subsystem library sizes are shown
15846 below. These are the code and data sizes for the acpica.lib
15847 produced by the Microsoft Visual C++ 6.0 compiler, and these
15848 values do not include any ACPI driver or OSPM code. The debug
15849 version of the code includes the debug output trace mechanism and
15850 has a larger code and data size. Note that these values will vary
15851 depending on the efficiency of the compiler and the compiler
15852 options used during generation.
15854 Previous Release (02_07_01)
15855 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15856 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15858 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15859 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15864 Updated Linux-specific code for core macro and OSL interface
15865 changes described above.
15867 Improved /proc/acpi/event. It now can be opened only once and has
15868 proper poll functionality.
15870 Fixed and restructured power management (acpi_bus).
15872 Only create /proc "view by type" when devices of that class exist.
15874 Fixed "charging/discharging" bug (and others) in acpi_battery.
15876 Improved thermal zone code.
15879 3) ASL Compiler, version X2039:
15882 Implemented the new compiler restriction on ASL String hex/octal
15883 escapes to non-null, ASCII values. An error results if an invalid
15884 value is used. (This will require an ACPI 2.0 specification
15887 AML object labels that are output to the optional C and ASM source
15888 are now prefixed with both the ACPI table signature and table ID
15889 to help guarantee uniqueness within a large BIOS project.
15892 ----------------------------------------
15893 Summary of changes for this label: 02_01_02
15895 1) ACPI CA Core Subsystem:
15897 ACPI 2.0 support is complete in the entire Core Subsystem and the
15898 ASL compiler. All new ACPI 2.0 operators are implemented and all
15899 other changes for ACPI 2.0 support are complete. With
15900 simultaneous code and data optimizations throughout the subsystem,
15901 ACPI 2.0 support has been implemented with almost no additional
15902 cost in terms of code and data size.
15904 Implemented a new mechanism for allocation of return buffers. If
15905 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
15906 be allocated on behalf of the caller. Consolidated all return
15907 buffer validation and allocation to a common procedure. Return
15908 buffers will be allocated via the primary OSL allocation interface
15909 since it appears that a separate pool is not needed by most users.
15910 If a separate pool is required for these buffers, the caller can
15911 still use the original mechanism and pre-allocate the buffer(s).
15913 Implemented support for string operands within the DerefOf
15916 Restructured the Hardware and Event managers to be table driven,
15917 simplifying the source code and reducing the amount of generated
15920 Split the common read/write low-level ACPI register bitfield
15921 procedure into a separate read and write, simplifying the code
15924 Obsoleted the AcpiOsCallocate OSL interface. This interface was
15925 used only a handful of times and didn't have enough critical mass
15926 for a separate interface. Replaced with a common calloc procedure
15929 Fixed a reported problem with the GPE number mapping mechanism
15930 that allows GPE1 numbers to be non-contiguous with GPE0.
15931 Reorganized the GPE information and shrunk a large array that was
15932 originally large enough to hold info for all possible GPEs (256)
15933 to simply large enough to hold all GPEs up to the largest GPE
15934 number on the machine.
15936 Fixed a reported problem with resource structure alignment on 64-
15939 Changed the AcpiEnableEvent and AcpiDisableEvent external
15940 interfaces to not require any flags for the common case of
15941 enabling/disabling a GPE.
15943 Implemented support to allow a "Notify" on a Processor object.
15945 Most TBDs in comments within the source code have been resolved
15949 Fixed a problem in the interpreter where a standalone parent
15950 prefix (^) was not handled correctly in the interpreter and
15953 Removed obsolete and unnecessary GPE save/restore code.
15955 Implemented Field support in the ASL Load operator. This allows a
15956 table to be loaded from a named field, in addition to loading a
15957 table directly from an Operation Region.
15959 Implemented timeout and handle support in the external Global Lock
15962 Fixed a problem in the AcpiDump utility where pathnames were no
15963 longer being generated correctly during the dump of named objects.
15965 Modified the AML debugger to give a full display of if/while
15966 predicates instead of just one AML opcode at a time. (The
15967 predicate can have several nested ASL statements.) The old method
15968 was confusing during single stepping.
15970 Code and Data Size: Current core subsystem library sizes are shown
15971 below. These are the code and data sizes for the acpica.lib
15972 produced by the Microsoft Visual C++ 6.0 compiler, and these
15973 values do not include any ACPI driver or OSPM code. The debug
15974 version of the code includes the debug output trace mechanism and
15975 has a larger code and data size. Note that these values will vary
15976 depending on the efficiency of the compiler and the compiler
15977 options used during generation.
15979 Previous Release (12_18_01)
15980 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15981 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15983 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15984 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15988 Implemented fix for PIIX reverse throttling errata (Processor
15991 Added new Limit interface (Processor and Thermal drivers)
15993 New thermal policy (Thermal driver)
15995 Many updates to /proc
15997 Battery "low" event support (Battery driver)
15999 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
16001 IA32 - IA64 initialization unification, no longer experimental
16003 Menuconfig options redesigned
16005 3) ASL Compiler, version X2037:
16007 Implemented several new output features to simplify integration of
16008 AML code into firmware: 1) Output the AML in C source code with
16009 labels for each named ASL object. The original ASL source code
16010 is interleaved as C comments. 2) Output the AML in ASM source code
16011 with labels and interleaved ASL source. 3) Output the AML in
16012 raw hex table form, in either C or ASM.
16014 Implemented support for optional string parameters to the
16015 LoadTable operator.
16017 Completed support for embedded escape sequences within string
16018 literals. The compiler now supports all single character escapes
16019 as well as the Octal and Hex escapes. Note: the insertion of a
16020 null byte into a string literal (via the hex/octal escape) causes
16021 the string to be immediately terminated. A warning is issued.
16023 Fixed a problem where incorrect AML was generated for the case
16024 where an ASL namepath consists of a single parent prefix (
16026 ) with no trailing name segments.
16028 The compiler has been successfully generated with a 64-bit C
16034 ----------------------------------------
16035 Summary of changes for this label: 12_18_01
16039 Enhanced blacklist with reason and severity fields. Any table's
16040 signature may now be used to identify a blacklisted system.
16042 Call _PIC control method to inform the firmware which interrupt
16043 model the OS is using. Turn on any disabled link devices.
16045 Cleaned up busmgr /proc error handling (Andreas Dilger)
16047 2) ACPI CA Core Subsystem:
16049 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
16052 Completed implementation of the ACPI 2.0 "Continue",
16053 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
16054 operators. All new ACPI 2.0 operators are now implemented in both
16055 the ASL compiler and the AML interpreter. The only remaining ACPI
16056 2.0 task is support for the String data type in the DerefOf
16057 operator. Fixed a problem with AcquireMutex where the status code
16058 was lost if the caller had to actually wait for the mutex.
16060 Increased the maximum ASL Field size from 64K bits to 4G bits.
16062 Completed implementation of the external Global Lock interfaces --
16063 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
16064 Handler parameters were added.
16066 Completed another pass at removing warnings and issues when
16067 compiling with 64-bit compilers. The code now compiles cleanly
16068 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
16069 add and subtract (diff) macros have changed considerably.
16072 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
16073 64-bit platforms, 32-bits on all others. This type is used
16074 wherever memory allocation and/or the C sizeof() operator is used,
16075 and affects the OSL memory allocation interfaces AcpiOsAllocate
16076 and AcpiOsCallocate.
16078 Implemented sticky user breakpoints in the AML debugger.
16080 Code and Data Size: Current core subsystem library sizes are shown
16081 below. These are the code and data sizes for the acpica.lib
16082 produced by the Microsoft Visual C++ 6.0 compiler, and these
16083 values do not include any ACPI driver or OSPM code. The debug
16084 version of the code includes the debug output trace mechanism and
16085 has a larger code and data size. Note that these values will vary
16086 depending on the efficiency of the compiler and the compiler
16087 options used during generation.
16089 Previous Release (12_05_01)
16090 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16091 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16093 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16094 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16096 3) ASL Compiler, version X2034:
16098 Now checks for (and generates an error if detected) the use of a
16099 Break or Continue statement without an enclosing While statement.
16102 Successfully generated the compiler with the Intel 64-bit C
16105 ----------------------------------------
16106 Summary of changes for this label: 12_05_01
16108 1) ACPI CA Core Subsystem:
16110 The ACPI 2.0 CopyObject operator is fully implemented. This
16111 operator creates a new copy of an object (and is also used to
16112 bypass the "implicit conversion" mechanism of the Store operator.)
16114 The ACPI 2.0 semantics for the SizeOf operator are fully
16115 implemented. The change is that performing a SizeOf on a
16116 reference object causes an automatic dereference of the object to
16117 tha actual value before the size is evaluated. This behavior was
16118 undefined in ACPI 1.0.
16120 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
16121 have been implemented. The interrupt polarity and mode are now
16124 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
16125 appearing in Package objects were not properly converted to
16126 integers when the internal Package was converted to an external
16127 object (via the AcpiEvaluateObject interface.)
16129 Fixed a problem with the namespace object deletion mechanism for
16130 objects created by control methods. There were two parts to this
16131 problem: 1) Objects created during the initialization phase method
16132 parse were not being deleted, and 2) The object owner ID mechanism
16133 to track objects was broken.
16135 Fixed a problem where the use of the ASL Scope operator within a
16136 control method would result in an invalid opcode exception.
16138 Fixed a problem introduced in the previous label where the buffer
16139 length required for the _PRT structure was not being returned
16142 Code and Data Size: Current core subsystem library sizes are shown
16143 below. These are the code and data sizes for the acpica.lib
16144 produced by the Microsoft Visual C++ 6.0 compiler, and these
16145 values do not include any ACPI driver or OSPM code. The debug
16146 version of the code includes the debug output trace mechanism and
16147 has a larger code and data size. Note that these values will vary
16148 depending on the efficiency of the compiler and the compiler
16149 options used during generation.
16151 Previous Release (11_20_01)
16152 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16153 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16156 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16157 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16161 Updated all files to apply cleanly against 2.4.16.
16163 Added basic PCI Interrupt Routing Table (PRT) support for IA32
16164 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
16165 version supports both static and dyanmic PRT entries, but dynamic
16166 entries are treated as if they were static (not yet
16167 reconfigurable). Architecture- specific code to use this data is
16168 absent on IA32 but should be available shortly.
16170 Changed the initialization sequence to start the ACPI interpreter
16171 (acpi_init) prior to initialization of the PCI driver (pci_init)
16172 in init/main.c. This ordering is required to support PRT and
16173 facilitate other (future) enhancement. A side effect is that the
16174 ACPI bus driver and certain device drivers can no longer be loaded
16177 Modified the 'make menuconfig' options to allow PCI Interrupt
16178 Routing support to be included without the ACPI Bus and other
16181 3) ASL Compiler, version X2033:
16183 Fixed some issues with the use of the new CopyObject and
16184 DataTableRegion operators. Both are fully functional.
16186 ----------------------------------------
16187 Summary of changes for this label: 11_20_01
16189 20 November 2001. Summary of changes for this release.
16191 1) ACPI CA Core Subsystem:
16193 Updated Index support to match ACPI 2.0 semantics. Storing a
16194 Integer, String, or Buffer to an Index of a Buffer will store only
16195 the least-significant byte of the source to the Indexed buffer
16196 byte. Multiple writes are not performed.
16198 Fixed a problem where the access type used in an AccessAs ASL
16199 operator was not recorded correctly into the field object.
16201 Fixed a problem where ASL Event objects were created in a
16202 signalled state. Events are now created in an unsignalled state.
16204 The internal object cache is now purged after table loading and
16205 initialization to reduce the use of dynamic kernel memory -- on
16206 the assumption that object use is greatest during the parse phase
16207 of the entire table (versus the run-time use of individual control
16210 ACPI 2.0 variable-length packages are now fully operational.
16212 Code and Data Size: Code and Data optimizations have permitted new
16213 feature development with an actual reduction in the library size.
16214 Current core subsystem library sizes are shown below. These are
16215 the code and data sizes for the acpica.lib produced by the
16216 Microsoft Visual C++ 6.0 compiler, and these values do not include
16217 any ACPI driver or OSPM code. The debug version of the code
16218 includes the debug output trace mechanism and has a larger code
16219 and data size. Note that these values will vary depending on the
16220 efficiency of the compiler and the compiler options used during
16223 Previous Release (11_09_01):
16224 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16225 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16228 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16229 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16233 Enhanced the ACPI boot-time initialization code to allow the use
16234 of Local APIC tables for processor enumeration on IA-32, and to
16235 pave the way for a fully MPS-free boot (on SMP systems) in the
16236 near future. This functionality replaces
16237 arch/i386/kernel/acpitables.c, which was introduced in an earlier
16238 2.4.15-preX release. To enable this feature you must add
16239 "acpi_boot=on" to the kernel command line -- see the help entry
16240 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
16243 Restructured the configuration options to allow boot-time table
16244 parsing support without inclusion of the ACPI Interpreter (and
16247 NOTE: This release does not include fixes for the reported events,
16248 power-down, and thermal passive cooling issues (coming soon).
16252 Added additional typechecking for Fields within restricted access
16253 Operation Regions. All fields within EC and CMOS regions must be
16254 declared with ByteAcc. All fields withing SMBus regions must be
16255 declared with the BufferAcc access type.
16257 Fixed a problem where the listing file output of control methods
16258 no longer interleaved the actual AML code with the ASL source
16264 ----------------------------------------
16265 Summary of changes for this label: 11_09_01
16267 1) ACPI CA Core Subsystem:
16269 Implemented ACPI 2.0-defined support for writes to fields with a
16270 Buffer, String, or Integer source operand that is smaller than the
16271 target field. In these cases, the source operand is zero-extended
16272 to fill the target field.
16274 Fixed a problem where a Field starting bit offset (within the
16275 parent operation region) was calculated incorrectly if the
16277 alignment of the field differed from the access width. This
16278 affected CreateWordField, CreateDwordField, CreateQwordField, and
16279 possibly other fields that use the "AccessAny" keyword.
16281 Fixed a problem introduced in the 11_02_01 release where indirect
16282 stores through method arguments did not operate correctly.
16286 Implemented boot-time ACPI table parsing support
16287 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
16288 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
16289 legacy BIOS interfaces (e.g. MPS) for the configuration of system
16290 processors, memory, and interrupts during setup_arch(). Note that
16291 this patch does not include the required architecture-specific
16292 changes required to apply this information -- subsequent patches
16293 will be posted for both IA32 and IA64 to achieve this.
16295 Added low-level sleep support for IA32 platforms, courtesy of Pat
16296 Mochel. This allows IA32 systems to transition to/from various
16297 sleeping states (e.g. S1, S3), although the lack of a centralized
16298 driver model and power-manageable drivers will prevent its
16299 (successful) use on most systems.
16301 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
16302 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
16303 tables" option, etc.
16305 Increased the default timeout for the EC driver from 1ms to 10ms
16306 (1000 cycles of 10us) to try to address AE_TIME errors during EC
16309 ----------------------------------------
16310 Summary of changes for this label: 11_02_01
16312 1) ACPI CA Core Subsystem:
16314 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
16315 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
16318 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
16319 changes to support ACPI 2.0 Qword field access. Read/Write
16320 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
16321 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
16322 the value parameter for the address space handler interface is now
16323 an ACPI_INTEGER. OSL implementations of these interfaces must now
16324 handle the case where the Width parameter is 64.
16326 Index Fields: Fixed a problem where unaligned bit assembly and
16327 disassembly for IndexFields was not supported correctly.
16329 Index and Bank Fields: Nested Index and Bank Fields are now
16330 supported. During field access, a check is performed to ensure
16331 that the value written to an Index or Bank register is not out of
16332 the range of the register. The Index (or Bank) register is
16333 written before each access to the field data. Future support will
16334 include allowing individual IndexFields to be wider than the
16335 DataRegister width.
16337 Fields: Fixed a problem where the AML interpreter was incorrectly
16338 attempting to write beyond the end of a Field/OpRegion. This was
16339 a boundary case that occurred when a DWORD field was written to a
16340 BYTE access OpRegion, forcing multiple writes and causing the
16341 interpreter to write one datum too many.
16343 Fields: Fixed a problem with Field/OpRegion access where the
16344 starting bit address of a field was incorrectly calculated if the
16345 current access type was wider than a byte (WordAcc, DwordAcc, or
16348 Fields: Fixed a problem where forward references to individual
16349 FieldUnits (individual Field names within a Field definition) were
16350 not resolved during the AML table load.
16352 Fields: Fixed a problem where forward references from a Field
16353 definition to the parent Operation Region definition were not
16354 resolved during the AML table load.
16356 Fields: Duplicate FieldUnit names within a scope are now detected
16357 during AML table load.
16359 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
16360 returned an incorrect name for the root node.
16362 Code and Data Size: Code and Data optimizations have permitted new
16363 feature development with an actual reduction in the library size.
16364 Current core subsystem library sizes are shown below. These are
16365 the code and data sizes for the acpica.lib produced by the
16366 Microsoft Visual C++ 6.0 compiler, and these values do not include
16367 any ACPI driver or OSPM code. The debug version of the code
16368 includes the debug output trace mechanism and has a larger code
16369 and data size. Note that these values will vary depending on the
16370 efficiency of the compiler and the compiler options used during
16373 Previous Release (10_18_01):
16374 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16375 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16378 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16379 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16383 Improved /proc processor output (Pavel Machek) Re-added
16384 MODULE_LICENSE("GPL") to all modules.
16386 3) ASL Compiler version X2030:
16388 Duplicate FieldUnit names within a scope are now detected and
16393 Programmer Reference updated to reflect OSL and address space
16394 handler interface changes described above.
16396 ----------------------------------------
16397 Summary of changes for this label: 10_18_01
16399 ACPI CA Core Subsystem:
16401 Fixed a problem with the internal object reference count mechanism
16402 that occasionally caused premature object deletion. This resolves
16403 all of the outstanding problem reports where an object is deleted
16404 in the middle of an interpreter evaluation. Although this problem
16405 only showed up in rather obscure cases, the solution to the
16406 problem involved an adjustment of all reference counts involving
16407 objects attached to namespace nodes.
16409 Fixed a problem with Field support in the interpreter where
16410 writing to an aligned field whose length is an exact multiple (2
16411 or greater) of the field access granularity would cause an attempt
16412 to write beyond the end of the field.
16414 The top level AML opcode execution functions within the
16415 interpreter have been renamed with a more meaningful and
16416 consistent naming convention. The modules exmonad.c and
16417 exdyadic.c were eliminated. New modules are exoparg1.c,
16418 exoparg2.c, exoparg3.c, and exoparg6.c.
16420 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16422 Fixed a problem where the AML debugger was causing some internal
16423 objects to not be deleted during subsystem termination.
16425 Fixed a problem with the external AcpiEvaluateObject interface
16426 where the subsystem would fault if the named object to be
16427 evaluated refered to a constant such as Zero, Ones, etc.
16429 Fixed a problem with IndexFields and BankFields where the
16430 subsystem would fault if the index, data, or bank registers were
16431 not defined in the same scope as the field itself.
16433 Added printf format string checking for compilers that support
16434 this feature. Corrected more than 50 instances of issues with
16435 format specifiers within invocations of ACPI_DEBUG_PRINT
16436 throughout the core subsystem code.
16438 The ASL "Revision" operator now returns the ACPI support level
16439 implemented in the core - the value "2" since the ACPI 2.0 support
16440 is more than 50% implemented.
16442 Enhanced the output of the AML debugger "dump namespace" command
16443 to output in a more human-readable form.
16445 Current core subsystem library code sizes are shown below. These
16447 are the code and data sizes for the acpica.lib produced by the
16448 Microsoft Visual C++ 6.0 compiler, and these values do not include
16449 any ACPI driver or OSPM code. The debug version of the code
16450 includes the full debug trace mechanism -- leading to a much
16452 larger code and data size. Note that these values will vary
16453 depending on the efficiency of the compiler and the compiler
16454 options used during generation.
16456 Previous Label (09_20_01):
16457 Non-Debug Version: 65K Code, 5K Data, 70K Total
16458 Debug Version: 138K Code, 58K Data, 196K Total
16462 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16463 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16467 Implemented a "Bad BIOS Blacklist" to track machines that have
16468 known ASL/AML problems.
16470 Enhanced the /proc interface for the thermal zone driver and added
16471 support for _HOT (the critical suspend trip point). The 'info'
16472 file now includes threshold/policy information, and allows setting
16473 of _SCP (cooling preference) and _TZP (polling frequency) values
16474 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
16475 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
16476 preference to the passive/quiet mode (if supported by the ASL).
16478 Implemented a workaround for a gcc bug that resuted in an OOPs
16479 when loading the control method battery driver.
16481 ----------------------------------------
16482 Summary of changes for this label: 09_20_01
16484 ACPI CA Core Subsystem:
16486 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
16487 modified to allow individual GPE levels to be flagged as wake-
16488 enabled (i.e., these GPEs are to remain enabled when the platform
16491 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
16492 support wake-enabled GPEs. This means that upon entering the
16493 sleep state, all GPEs that are not wake-enabled are disabled.
16494 When leaving the sleep state, these GPEs are reenabled.
16496 A local double-precision divide/modulo module has been added to
16497 enhance portability to OS kernels where a 64-bit math library is
16498 not available. The new module is "utmath.c".
16500 Several optimizations have been made to reduce the use of CPU
16501 stack. Originally over 2K, the maximum stack usage is now below
16502 2K at 1860 bytes (1.82k)
16504 Fixed a problem with the AcpiGetFirmwareTable interface where the
16505 root table pointer was not mapped into a logical address properly.
16507 Fixed a problem where a NULL pointer was being dereferenced in the
16508 interpreter code for the ASL Notify operator.
16510 Fixed a problem where the use of the ASL Revision operator
16511 returned an error. This operator now returns the current version
16512 of the ACPI CA core subsystem.
16514 Fixed a problem where objects passed as control method parameters
16515 to AcpiEvaluateObject were always deleted at method termination.
16516 However, these objects may end up being stored into the namespace
16517 by the called method. The object reference count mechanism was
16518 applied to these objects instead of a force delete.
16520 Fixed a problem where static strings or buffers (contained in the
16521 AML code) that are declared as package elements within the ASL
16522 code could cause a fault because the interpreter would attempt to
16523 delete them. These objects are now marked with the "static
16524 object" flag to prevent any attempt to delete them.
16526 Implemented an interpreter optimization to use operands directly
16527 from the state object instead of extracting the operands to local
16528 variables. This reduces stack use and code size, and improves
16531 The module exxface.c was eliminated as it was an unnecessary extra
16534 Current core subsystem library code sizes are shown below. These
16535 are the code and data sizes for the acpica.lib produced by the
16536 Microsoft Visual C++ 6.0 compiler, and these values do not include
16537 any ACPI driver or OSPM code. The debug version of the code
16538 includes the full debug trace mechanism -- leading to a much
16539 larger code and data size. Note that these values will vary
16540 depending on the efficiency of the compiler and the compiler
16541 options used during generation.
16543 Non-Debug Version: 65K Code, 5K Data, 70K Total
16544 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
16545 Total (Previously 195K)
16549 Support for ACPI 2.0 64-bit integers has been added. All ACPI
16550 Integer objects are now 64 bits wide
16552 All Acpi data types and structures are now in lower case. Only
16553 Acpi macros are upper case for differentiation.
16557 Changes to the external interfaces as described above.
16559 ----------------------------------------
16560 Summary of changes for this label: 08_31_01
16562 ACPI CA Core Subsystem:
16564 A bug with interpreter implementation of the ASL Divide operator
16565 was found and fixed. The implicit function return value (not the
16566 explicit store operands) was returning the remainder instead of
16567 the quotient. This was a longstanding bug and it fixes several
16568 known outstanding issues on various platforms.
16570 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
16571 been further optimized for size. There are 700 invocations of the
16572 DEBUG_PRINT macro alone, so each optimization reduces the size of
16573 the debug version of the subsystem significantly.
16575 A stack trace mechanism has been implemented. The maximum stack
16576 usage is about 2K on 32-bit platforms. The debugger command "stat
16577 stack" will display the current maximum stack usage.
16579 All public symbols and global variables within the subsystem are
16580 now prefixed with the string "Acpi". This keeps all of the
16581 symbols grouped together in a kernel map, and avoids conflicts
16582 with other kernel subsystems.
16584 Most of the internal fixed lookup tables have been moved into the
16585 code segment via the const operator.
16587 Several enhancements have been made to the interpreter to both
16588 reduce the code size and improve performance.
16590 Current core subsystem library code sizes are shown below. These
16591 are the code and data sizes for the acpica.lib produced by the
16592 Microsoft Visual C++ 6.0 compiler, and these values do not include
16593 any ACPI driver or OSPM code. The debug version of the code
16594 includes the full debug trace mechanism which contains over 700
16595 invocations of the DEBUG_PRINT macro, 500 function entry macro
16596 invocations, and over 900 function exit macro invocations --
16597 leading to a much larger code and data size. Note that these
16598 values will vary depending on the efficiency of the compiler and
16599 the compiler options used during generation.
16601 Non-Debug Version: 64K Code, 5K Data, 69K Total
16602 Debug Version: 137K Code, 58K Data, 195K Total
16606 Implemented wbinvd() macro, pending a kernel-wide definition.
16608 Fixed /proc/acpi/event to handle poll() and short reads.
16610 ASL Compiler, version X2026:
16612 Fixed a problem introduced in the previous label where the AML
16614 code emitted for package objects produced packages with zero
16617 ----------------------------------------
16618 Summary of changes for this label: 08_16_01
16620 ACPI CA Core Subsystem:
16622 The following ACPI 2.0 ASL operators have been implemented in the
16623 AML interpreter (These are already supported by the Intel ASL
16624 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16625 ToBuffer. Support for 64-bit AML constants is implemented in the
16626 AML parser, debugger, and disassembler.
16628 The internal memory tracking mechanism (leak detection code) has
16629 been upgraded to reduce the memory overhead (a separate tracking
16630 block is no longer allocated for each memory allocation), and now
16631 supports all of the internal object caches.
16633 The data structures and code for the internal object caches have
16634 been coelesced and optimized so that there is a single cache and
16635 memory list data structure and a single group of functions that
16636 implement generic cache management. This has reduced the code
16637 size in both the debug and release versions of the subsystem.
16639 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16640 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16641 different, because it generates a single call to an internal
16642 function. This results in a savings of about 90 bytes per
16643 invocation, resulting in an overall code and data savings of about
16644 16% in the debug version of the subsystem.
16648 Fixed C3 disk corruption problems and re-enabled C3 on supporting
16651 Integrated low-level sleep code by Patrick Mochel.
16653 Further tweaked source code Linuxization.
16659 Support for ACPI 2.0 variable length packages is fixed/completed.
16661 Fixed a problem where the optional length parameter for the ACPI
16662 2.0 ToString operator.
16664 Fixed multiple extraneous error messages when a syntax error is
16665 detected within the declaration line of a control method.
16667 ----------------------------------------
16668 Summary of changes for this label: 07_17_01
16670 ACPI CA Core Subsystem:
16672 Added a new interface named AcpiGetFirmwareTable to obtain any
16673 ACPI table via the ACPI signature. The interface can be called at
16674 any time during kernel initialization, even before the kernel
16675 virtual memory manager is initialized and paging is enabled. This
16676 allows kernel subsystems to obtain ACPI tables very early, even
16677 before the ACPI CA subsystem is initialized.
16679 Fixed a problem where Fields defined with the AnyAcc attribute
16680 could be resolved to the incorrect address under the following
16681 conditions: 1) the field width is larger than 8 bits and 2) the
16682 parent operation region is not defined on a DWORD boundary.
16684 Fixed a problem where the interpreter is not being locked during
16685 namespace initialization (during execution of the _INI control
16686 methods), causing an error when an attempt is made to release it
16689 ACPI 2.0 support in the AML Interpreter has begun and will be
16690 ongoing throughout the rest of this year. In this label, The Mod
16691 operator is implemented.
16693 Added a new data type to contain full PCI addresses named
16694 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16695 and Function values.
16699 Enhanced the Linux version of the source code to change most
16700 capitalized ACPI type names to lowercase. For example, all
16701 instances of ACPI_STATUS are changed to acpi_status. This will
16702 result in a large diff, but the change is strictly cosmetic and
16703 aligns the CA code closer to the Linux coding standard.
16707 The interfaces to the PCI configuration space have been changed to
16708 add the PCI Segment number and to split the single 32-bit combined
16709 DeviceFunction field into two 16-bit fields. This was
16710 accomplished by moving the four values that define an address in
16711 PCI configuration space (segment, bus, device, and function) to
16712 the new ACPI_PCI_ID structure.
16714 The changes to the PCI configuration space interfaces led to a
16715 reexamination of the complete set of address space access
16716 interfaces for PCI, I/O, and Memory. The previously existing 18
16717 interfaces have proven difficult to maintain (any small change
16718 must be propagated across at least 6 interfaces) and do not easily
16719 allow for future expansion to 64 bits if necessary. Also, on some
16720 systems, it would not be appropriate to demultiplex the access
16721 width (8, 16, 32,or 64) before calling the OSL if the
16722 corresponding native OS interfaces contain a similar access width
16723 parameter. For these reasons, the 18 address space interfaces
16724 have been replaced by these 6 new ones:
16726 AcpiOsReadPciConfiguration
16727 AcpiOsWritePciConfiguration
16733 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16734 to perform the platform and/or OS-specific actions necessary to
16735 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16736 interface will simply call down to the CA core to perform the low-
16737 memory search for the table. On IA-64, the RSDP is obtained from
16738 EFI. Migrating this interface to the OSL allows the CA core to
16740 remain OS and platform independent.
16742 Added a new interface named AcpiOsSignal to provide a generic
16743 "function code and pointer" interface for various miscellaneous
16744 signals and notifications that must be made to the host OS. The
16745 first such signals are intended to support the ASL Fatal and
16746 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16747 interface has been obsoleted.
16749 The definition of the AcpiFormatException interface has been
16750 changed to simplify its use. The caller no longer must supply a
16751 buffer to the call; A pointer to a const string is now returned
16752 directly. This allows the call to be easily used in printf
16753 statements, etc. since the caller does not have to manage a local
16757 ASL Compiler, Version X2025:
16759 The ACPI 2.0 Switch/Case/Default operators have been implemented
16760 and are fully functional. They will work with all ACPI 1.0
16761 interpreters, since the operators are simply translated to If/Else
16764 The ACPI 2.0 ElseIf operator is implemented and will also work
16765 with 1.0 interpreters, for the same reason.
16767 Implemented support for ACPI 2.0 variable-length packages. These
16768 packages have a separate opcode, and their size is determined by
16769 the interpreter at run-time.
16771 Documentation The ACPI CA Programmer Reference has been updated to
16772 reflect the new interfaces and changes to existing interfaces.
16774 ------------------------------------------
16775 Summary of changes for this label: 06_15_01
16777 ACPI CA Core Subsystem:
16779 Fixed a problem where a DWORD-accessed field within a Buffer
16780 object would get its byte address inadvertently rounded down to
16781 the nearest DWORD. Buffers are always Byte-accessible.
16783 ASL Compiler, version X2024:
16785 Fixed a problem where the Switch() operator would either fault or
16786 hang the compiler. Note however, that the AML code for this ACPI
16787 2.0 operator is not yet implemented.
16789 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16792 Implementation of the CreateField operator automatically converts
16793 a reference to a named field within a resource descriptor from a
16794 byte offset to a bit offset if required.
16796 Added some missing named fields from the resource descriptor
16797 support. These are the names that are automatically created by the
16798 compiler to reference fields within a descriptor. They are only
16799 valid at compile time and are not passed through to the AML
16802 Resource descriptor named fields are now typed as Integers and
16803 subject to compile-time typechecking when used in expressions.
16805 ------------------------------------------
16806 Summary of changes for this label: 05_18_01
16808 ACPI CA Core Subsystem:
16810 Fixed a couple of problems in the Field support code where bits
16811 from adjacent fields could be returned along with the proper field
16812 bits. Restructured the field support code to improve performance,
16813 readability and maintainability.
16815 New DEBUG_PRINTP macro automatically inserts the procedure name
16816 into the output, saving hundreds of copies of procedure name
16817 strings within the source, shrinking the memory footprint of the
16818 debug version of the core subsystem.
16820 Source Code Structure:
16822 The source code directory tree was restructured to reflect the
16823 current organization of the component architecture. Some files
16824 and directories have been moved and/or renamed.
16828 Fixed leaking kacpidpc processes.
16830 Fixed queueing event data even when /proc/acpi/event is not
16833 ASL Compiler, version X2020:
16835 Memory allocation performance enhancement - over 24X compile time
16836 improvement on large ASL files. Parse nodes and namestring
16837 buffers are now allocated from a large internal compiler buffer.
16839 The temporary .SRC file is deleted unless the "-s" option is
16842 The "-d" debug output option now sends all output to the .DBG file
16843 instead of the console.
16845 "External" second parameter is now optional
16847 "ElseIf" syntax now properly allows the predicate
16849 Last operand to "Load" now recognized as a Target operand
16851 Debug object can now be used anywhere as a normal object.
16853 ResourceTemplate now returns an object of type BUFFER
16855 EISAID now returns an object of type INTEGER
16857 "Index" now works with a STRING operand
16859 "LoadTable" now accepts optional parameters
16861 "ToString" length parameter is now optional
16863 "Interrupt (ResourceType," parse error fixed.
16865 "Register" with a user-defined region space parse error fixed
16867 Escaped backslash at the end of a string ("\\") scan/parse error
16870 "Revision" is now an object of type INTEGER.
16874 ------------------------------------------
16875 Summary of changes for this label: 05_02_01
16879 /proc/acpi/event now blocks properly.
16881 Removed /proc/sys/acpi. You can still dump your DSDT from
16884 ACPI CA Core Subsystem:
16886 Fixed a problem introduced in the previous label where some of the
16887 "small" resource descriptor types were not recognized.
16889 Improved error messages for the case where an ASL Field is outside
16890 the range of the parent operation region.
16892 ASL Compiler, version X2018:
16895 Added error detection for ASL Fields that extend beyond the length
16896 of the parent operation region (only if the length of the region
16897 is known at compile time.) This includes fields that have a
16898 minimum access width that is smaller than the parent region, and
16899 individual field units that are partially or entirely beyond the
16900 extent of the parent.
16904 ------------------------------------------
16905 Summary of changes for this label: 04_27_01
16907 ACPI CA Core Subsystem:
16909 Fixed a problem where the namespace mutex could be released at the
16910 wrong time during execution of AcpiRemoveAddressSpaceHandler.
16912 Added optional thread ID output for debug traces, to simplify
16913 debugging of multiple threads. Added context switch notification
16914 when the debug code realizes that a different thread is now
16915 executing ACPI code.
16917 Some additional external data types have been prefixed with the
16918 string "ACPI_" for consistency. This may effect existing code.
16919 The data types affected are the external callback typedefs - e.g.,
16921 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
16925 Fixed an issue with the OSL semaphore implementation where a
16926 thread was waking up with an error from receiving a SIGCHLD
16929 Linux version of ACPI CA now uses the system C library for string
16930 manipulation routines instead of a local implementation.
16932 Cleaned up comments and removed TBDs.
16934 ASL Compiler, version X2017:
16936 Enhanced error detection and reporting for all file I/O
16941 Programmer Reference updated to version 1.06.
16945 ------------------------------------------
16946 Summary of changes for this label: 04_13_01
16948 ACPI CA Core Subsystem:
16950 Restructured support for BufferFields and RegionFields.
16951 BankFields support is now fully operational. All known 32-bit
16952 limitations on field sizes have been removed. Both BufferFields
16953 and (Operation) RegionFields are now supported by the same field
16956 Resource support now supports QWORD address and IO resources. The
16957 16/32/64 bit address structures and the Extended IRQ structure
16958 have been changed to properly handle Source Resource strings.
16960 A ThreadId of -1 is now used to indicate a "mutex not acquired"
16961 condition internally and must never be returned by AcpiOsThreadId.
16962 This reserved value was changed from 0 since Unix systems allow a
16967 Driver code reorganized to enhance portability
16969 Added a kernel configuration option to control ACPI_DEBUG
16971 Fixed the EC driver to honor _GLK.
16973 ASL Compiler, version X2016:
16975 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
16976 address space was set to 0, not 0x7f as it should be.
16978 ------------------------------------------
16979 Summary of changes for this label: 03_13_01
16981 ACPI CA Core Subsystem:
16983 During ACPI initialization, the _SB_._INI method is now run if
16986 Notify handler fix - notifies are deferred until the parent method
16987 completes execution. This fixes the "mutex already acquired"
16988 issue seen occasionally.
16990 Part of the "implicit conversion" rules in ACPI 2.0 have been
16991 found to cause compatibility problems with existing ASL/AML. The
16992 convert "result-to-target-type" implementation has been removed
16993 for stores to method Args and Locals. Source operand conversion
16994 is still fully implemented. Possible changes to ACPI 2.0
16995 specification pending.
16997 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
17000 Fix for compiler warnings for 64-bit compiles.
17004 /proc output aligned for easier parsing.
17006 Release-version compile problem fixed.
17008 New kernel configuration options documented in Configure.help.
17010 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
17015 Power resource driver integrated with bus manager.
17017 Fixed kernel fault during active cooling for thermal zones.
17021 The source code tree has been restructured.
17025 ------------------------------------------
17026 Summary of changes for this label: 03_02_01
17028 Linux OS Services Layer (OSL):
17030 Major revision of all Linux-specific code.
17032 Modularized all ACPI-specific drivers.
17034 Added new thermal zone and power resource drivers.
17036 Revamped /proc interface (new functionality is under /proc/acpi).
17038 New kernel configuration options.
17040 Linux known issues:
17042 New kernel configuration options not documented in Configure.help
17046 Module dependencies not currently implemented. If used, they
17047 should be loaded in this order: busmgr, power, ec, system,
17048 processor, battery, ac_adapter, button, thermal.
17050 Modules will not load if CONFIG_MODVERSION is set.
17052 IBM 600E - entering S5 may reboot instead of shutting down.
17054 IBM 600E - Sleep button may generate "Invalid <NULL> context"
17057 Some systems may fail with "execution mutex already acquired"
17060 ACPI CA Core Subsystem:
17062 Added a new OSL Interface, AcpiOsGetThreadId. This was required
17063 for the deadlock detection code. Defined to return a non-zero, 32-
17064 bit thread ID for the currently executing thread. May be a non-
17065 zero constant integer on single-thread systems.
17067 Implemented deadlock detection for internal subsystem mutexes. We
17068 may add conditional compilation for this code (debug only) later.
17070 ASL/AML Mutex object semantics are now fully supported. This
17071 includes multiple acquires/releases by owner and support for the
17073 Mutex SyncLevel parameter.
17075 A new "Force Release" mechanism automatically frees all ASL
17076 Mutexes that have been acquired but not released when a thread
17077 exits the interpreter. This forces conformance to the ACPI spec
17078 ("All mutexes must be released when an invocation exits") and
17079 prevents deadlocked ASL threads. This mechanism can be expanded
17080 (later) to monitor other resource acquisitions if OEM ASL code
17081 continues to misbehave (which it will).
17083 Several new ACPI exception codes have been added for the Mutex
17086 Recursive method calls are now allowed and supported (the ACPI
17087 spec does in fact allow recursive method calls.) The number of
17088 recursive calls is subject to the restrictions imposed by the
17089 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
17092 Implemented support for the SyncLevel parameter for control
17093 methods (ACPI 2.0 feature)
17095 Fixed a deadlock problem when multiple threads attempted to use
17098 Fixed a problem where the string length of a String package
17099 element was not always set in a package returned from
17100 AcpiEvaluateObject.
17102 Fixed a problem where the length of a String package element was
17103 not always included in the length of the overall package returned
17104 from AcpiEvaluateObject.
17106 Added external interfaces (Acpi*) to the ACPI debug memory
17107 manager. This manager keeps a list of all outstanding
17108 allocations, and can therefore detect memory leaks and attempts to
17109 free memory blocks more than once. Useful for code such as the
17110 power manager, etc. May not be appropriate for device drivers.
17111 Performance with the debug code enabled is slow.
17113 The ACPI Global Lock is now an optional hardware element.
17115 ASL Compiler Version X2015:
17117 Integrated changes to allow the compiler to be generated on
17118 multiple platforms.
17120 Linux makefile added to generate the compiler on Linux
17124 All platform-specific headers have been moved to their own
17125 subdirectory, Include/Platform.
17127 New source file added, Interpreter/ammutex.c
17129 New header file, Include/acstruct.h
17133 The programmer reference has been updated for the following new
17134 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
17136 ------------------------------------------
17137 Summary of changes for this label: 02_08_01
17139 Core ACPI CA Subsystem: Fixed a problem where an error was
17140 incorrectly returned if the return resource buffer was larger than
17141 the actual data (in the resource interfaces).
17143 References to named objects within packages are resolved to the
17145 full pathname string before packages are returned directly (via
17146 the AcpiEvaluateObject interface) or indirectly via the resource
17149 Linux OS Services Layer (OSL):
17151 Improved /proc battery interface.
17154 Added C-state debugging output and other miscellaneous fixes.
17156 ASL Compiler Version X2014:
17158 All defined method arguments can now be used as local variables,
17159 including the ones that are not actually passed in as parameters.
17160 The compiler tracks initialization of the arguments and issues an
17161 exception if they are used without prior assignment (just like
17164 The -o option now specifies a filename prefix that is used for all
17165 output files, including the AML output file. Otherwise, the
17166 default behavior is as follows: 1) the AML goes to the file
17167 specified in the DSDT. 2) all other output files use the input
17168 source filename as the base.
17170 ------------------------------------------
17171 Summary of changes for this label: 01_25_01
17173 Core ACPI CA Subsystem: Restructured the implementation of object
17174 store support within the interpreter. This includes support for
17175 the Store operator as well as any ASL operators that include a
17178 Partially implemented support for Implicit Result-to-Target
17179 conversion. This is when a result object is converted on the fly
17180 to the type of an existing target object. Completion of this
17181 support is pending further analysis of the ACPI specification
17182 concerning this matter.
17184 CPU-specific code has been removed from the subsystem (hardware
17187 New Power Management Timer functions added
17189 Linux OS Services Layer (OSL): Moved system state transition code
17190 to the core, fixed it, and modified Linux OSL accordingly.
17192 Fixed C2 and C3 latency calculations.
17195 We no longer use the compilation date for the version message on
17196 initialization, but retrieve the version from AcpiGetSystemInfo().
17198 Incorporated for fix Sony VAIO machines.
17200 Documentation: The Programmer Reference has been updated and
17204 ASL Compiler: Version X2013: Fixed a problem where the line
17205 numbering and error reporting could get out of sync in the
17206 presence of multiple include files.
17208 ------------------------------------------
17209 Summary of changes for this label: 01_15_01
17211 Core ACPI CA Subsystem:
17213 Implemented support for type conversions in the execution of the
17214 ASL Concatenate operator (The second operand is converted to
17215 match the type of the first operand before concatenation.)
17217 Support for implicit source operand conversion is partially
17218 implemented. The ASL source operand types Integer, Buffer, and
17219 String are freely interchangeable for most ASL operators and are
17220 converted by the interpreter on the fly as required. Implicit
17221 Target operand conversion (where the result is converted to the
17222 target type before storing) is not yet implemented.
17224 Support for 32-bit and 64-bit BCD integers is implemented.
17226 Problem fixed where a field read on an aligned field could cause a
17227 read past the end of the field.
17229 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
17230 does not return a value, but the caller expects one. (The ASL
17231 compiler flags this as a warning.)
17236 1. Static typechecking of all operands is implemented. This
17237 prevents the use of invalid objects (such as using a Package where
17238 an Integer is required) at compile time instead of at interpreter
17240 2. The ASL source line is printed with ALL errors and warnings.
17241 3. Bug fix for source EOF without final linefeed.
17242 4. Debug option is split into a parse trace and a namespace trace.
17243 5. Namespace output option (-n) includes initial values for
17244 integers and strings.
17245 6. Parse-only option added for quick syntax checking.
17246 7. Compiler checks for duplicate ACPI name declarations
17249 1. Relaxed typechecking to allow interchangeability between
17250 strings, integers, and buffers. These types are now converted by
17251 the interpreter at runtime.
17252 2. Compiler reports time taken by each internal subsystem in the
17256 ------------------------------------------
17257 Summary of changes for this label: 12_14_00
17261 This is the first official release of the compiler. Since the
17262 compiler requires elements of the Core Subsystem, this label
17263 synchronizes everything.
17265 ------------------------------------------
17266 Summary of changes for this label: 12_08_00
17269 Fixed a problem where named references within the ASL definition
17270 of both OperationRegions and CreateXXXFields did not work
17271 properly. The symptom was an AE_AML_OPERAND_TYPE during
17272 initialization of the region/field. This is similar (but not
17273 related internally) to the problem that was fixed in the last
17276 Implemented both 32-bit and 64-bit support for the BCD ASL
17277 functions ToBCD and FromBCD.
17279 Updated all legal headers to include "2000" in the copyright
17282 ------------------------------------------
17283 Summary of changes for this label: 12_01_00
17285 Fixed a problem where method invocations within the ASL definition
17286 of both OperationRegions and CreateXXXFields did not work
17287 properly. The symptom was an AE_AML_OPERAND_TYPE during
17288 initialization of the region/field:
17290 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
17291 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
17294 Fixed a problem where operators with more than one nested
17295 subexpression would fail. The symptoms were varied, by mostly
17296 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
17297 problem that has gone unnoticed until now.
17299 Subtract (Add (1,2), Multiply (3,4))
17301 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
17302 previous build (The prefix part of a relative path was handled
17305 Fixed a problem where Operation Region initialization failed if
17306 the operation region name was a "namepath" instead of a simple
17307 "nameseg". Symptom was an AE_NO_OPERAND error.
17309 Fixed a problem where an assignment to a local variable via the
17310 indirect RefOf mechanism only worked for the first such
17311 assignment. Subsequent assignments were ignored.
17313 ------------------------------------------
17314 Summary of changes for this label: 11_15_00
17316 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
17317 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
17318 the AML interpreter does NOT have support for the new 2.0 ASL
17319 grammar terms at this time.
17321 All ACPI hardware access is via the GAS structures in the ACPI 2.0
17324 All physical memory addresses across all platforms are now 64 bits
17325 wide. Logical address width remains dependent on the platform
17328 AcpiOsMapMemory interface changed to a 64-bit physical address.
17330 The AML interpreter integer size is now 64 bits, as per the ACPI
17333 For backwards compatibility with ACPI 1.0, ACPI tables with a
17334 revision number less than 2 use 32-bit integers only.
17336 Fixed a problem where the evaluation of OpRegion operands did not
17337 always resolve them to numbers properly.
17339 ------------------------------------------
17340 Summary of changes for this label: 10_20_00
17342 Fix for CBN_._STA issue. This fix will allow correct access to
17343 CBN_ OpRegions when the _STA returns 0x8.
17345 Support to convert ACPI constants (Ones, Zeros, One) to actual
17346 values before a package object is returned
17348 Fix for method call as predicate to if/while construct causing
17349 incorrect if/while behavior
17351 Fix for Else block package lengths sometimes calculated wrong (if
17354 Fix for Processor object length field, was always zero
17356 Table load abort if FACP sanity check fails
17358 Fix for problem with Scope(name) if name already exists
17360 Warning emitted if a named object referenced cannot be found
17361 (resolved) during method execution.
17367 ------------------------------------------
17368 Summary of changes for this label: 9_29_00
17370 New table initialization interfaces: AcpiInitializeSubsystem no
17371 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
17372 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
17373 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
17376 Note: These interface changes require changes to all existing OSDs
17378 The PCI_Config default address space handler is always installed
17379 at the root namespace object.
17381 -------------------------------------------
17382 Summary of changes for this label: 09_15_00
17384 The new initialization architecture is implemented. New
17385 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
17386 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
17388 (Namespace is automatically loaded when a table is loaded)
17390 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
17391 52 bytes to 32 bytes. There is usually one of these for every
17392 namespace object, so the memory savings is significant.
17394 Implemented just-in-time evaluation of the CreateField operators.
17396 Bug fixes for IA-64 support have been integrated.
17398 Additional code review comments have been implemented
17400 The so-called "third pass parse" has been replaced by a final walk
17401 through the namespace to initialize all operation regions (address
17402 spaces) and fields that have not yet been initialized during the
17403 execution of the various _INI and REG methods.
17405 New file - namespace/nsinit.c
17407 -------------------------------------------
17408 Summary of changes for this label: 09_01_00
17410 Namespace manager data structures have been reworked to change the
17411 primary object from a table to a single object. This has
17412 resulted in dynamic memory savings of 3X within the namespace and
17413 2X overall in the ACPI CA subsystem.
17415 Fixed problem where the call to AcpiEvFindPciRootBuses was
17416 inadvertently left commented out.
17418 Reduced the warning count when generating the source with the GCC
17421 Revision numbers added to each module header showing the
17422 SourceSafe version of the file. Please refer to this version
17423 number when giving us feedback or comments on individual modules.
17425 The main object types within the subsystem have been renamed to
17426 clarify their purpose:
17428 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17429 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17430 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17432 NOTE: no changes to the initialization sequence are included in
17435 -------------------------------------------
17436 Summary of changes for this label: 08_23_00
17438 Fixed problem where TerminateControlMethod was being called
17439 multiple times per method
17441 Fixed debugger problem where single stepping caused a semaphore to
17444 Improved performance through additional parse object caching -
17445 added ACPI_EXTENDED_OP type
17447 -------------------------------------------
17448 Summary of changes for this label: 08_10_00
17450 Parser/Interpreter integration: Eliminated the creation of
17451 complete parse trees for ACPI tables and control methods.
17452 Instead, parse subtrees are created and then deleted as soon as
17453 they are processed (Either entered into the namespace or executed
17454 by the interpreter). This reduces the use of dynamic kernel
17455 memory significantly. (about 10X)
17457 Exception codes broken into classes and renumbered. Be sure to
17458 recompile all code that includes acexcep.h. Hopefully we won't
17459 have to renumber the codes again now that they are split into
17460 classes (environment, programmer, AML code, ACPI table, and
17463 Fixed some additional alignment issues in the Resource Manager
17466 Implemented semaphore tracking in the AcpiExec utility, and fixed
17467 several places where mutexes/semaphores were being unlocked
17468 without a corresponding lock operation. There are no known
17469 semaphore or mutex "leaks" at this time.
17471 Fixed the case where an ASL Return operator is used to return an
17474 -------------------------------------------
17475 Summary of changes for this label: 07_28_00
17477 Fixed a problem with the way addresses were calculated in
17478 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
17479 manifested itself when a Field was created with WordAccess or
17480 DwordAccess, but the field unit defined within the Field was less
17482 than a Word or Dword.
17484 Fixed a problem in AmlDumpOperands() module's loop to pull
17485 operands off of the operand stack to display information. The
17486 problem manifested itself as a TLB error on 64-bit systems when
17487 accessing an operand stack with two or more operands.
17489 Fixed a problem with the PCI configuration space handlers where
17490 context was getting confused between accesses. This required a
17491 change to the generic address space handler and address space
17492 setup definitions. Handlers now get both a global handler context
17493 (this is the one passed in by the user when executing
17494 AcpiInstallAddressSpaceHandler() and a specific region context
17495 that is unique to each region (For example, the _ADR, _SEG and
17496 _BBN values associated with a specific region). The generic
17497 function definitions have changed to the following:
17499 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
17500 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
17501 *HandlerContext, // This used to be void *Context void
17502 *RegionContext); // This is an additional parameter
17504 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
17505 RegionHandle, UINT32 Function, void *HandlerContext, void
17506 **RegionContext); // This used to be **ReturnContext
17508 -------------------------------------------
17509 Summary of changes for this label: 07_21_00
17511 Major file consolidation and rename. All files within the
17512 interpreter have been renamed as well as most header files. This
17513 was done to prevent collisions with existing files in the host
17514 OSs -- filenames such as "config.h" and "global.h" seem to be
17515 quite common. The VC project files have been updated. All
17516 makefiles will require modification.
17518 The parser/interpreter integration continues in Phase 5 with the
17519 implementation of a complete 2-pass parse (the AML is parsed
17520 twice) for each table; This avoids the construction of a huge
17521 parse tree and therefore reduces the amount of dynamic memory
17522 required by the subsystem. Greater use of the parse object cache
17523 means that performance is unaffected.
17525 Many comments from the two code reviews have been rolled in.
17527 The 64-bit alignment support is complete.
17529 -------------------------------------------
17530 Summary of changes for this label: 06_30_00
17532 With a nod and a tip of the hat to the technology of yesteryear,
17533 we've added support in the source code for 80 column output
17534 devices. The code is now mostly constrained to 80 columns or
17535 less to support environments and editors that 1) cannot display
17536 or print more than 80 characters on a single line, and 2) cannot
17537 disable line wrapping.
17539 A major restructuring of the namespace data structure has been
17540 completed. The result is 1) cleaner and more
17541 understandable/maintainable code, and 2) a significant reduction
17542 in the dynamic memory requirement for each named ACPI object
17545 -------------------------------------------
17546 Summary of changes for this label: 06_23_00
17548 Linux support has been added. In order to obtain approval to get
17549 the ACPI CA subsystem into the Linux kernel, we've had to make
17550 quite a few changes to the base subsystem that will affect all
17551 users (all the changes are generic and OS- independent). The
17552 effects of these global changes have been somewhat far reaching.
17553 Files have been merged and/or renamed and interfaces have been
17554 renamed. The major changes are described below.
17556 Osd* interfaces renamed to AcpiOs* to eliminate namespace
17557 pollution/confusion within our target kernels. All OSD
17558 interfaces must be modified to match the new naming convention.
17560 Files merged across the subsystem. A number of the smaller source
17561 and header files have been merged to reduce the file count and
17562 increase the density of the existing files. There are too many
17563 to list here. In general, makefiles that call out individual
17564 files will require rebuilding.
17566 Interpreter files renamed. All interpreter files now have the
17567 prefix am* instead of ie* and is*.
17569 Header files renamed: The acapi.h file is now acpixf.h. The
17570 acpiosd.h file is now acpiosxf.h. We are removing references to
17571 the acronym "API" since it is somewhat windowsy. The new name is
17572 "external interface" or xface or xf in the filenames.j
17575 All manifest constants have been forced to upper case (some were
17576 mixed case.) Also, the string "ACPI_" has been prepended to many
17577 (not all) of the constants, typedefs, and structs.
17579 The globals "DebugLevel" and "DebugLayer" have been renamed
17580 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
17582 All other globals within the subsystem are now prefixed with
17583 "AcpiGbl_" Internal procedures within the subsystem are now
17584 prefixed with "Acpi" (with only a few exceptions). The original
17585 two-letter abbreviation for the subcomponent remains after "Acpi"
17586 - for example, CmCallocate became AcpiCmCallocate.
17588 Added a source code translation/conversion utility. Used to
17589 generate the Linux source code, it can be modified to generate
17590 other types of source as well. Can also be used to cleanup
17591 existing source by removing extraneous spaces and blank lines.
17592 Found in tools/acpisrc/*
17594 OsdUnMapMemory was renamed to OsdUnmapMemory and then
17595 AcpiOsUnmapMemory. (UnMap became Unmap).
17597 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
17598 When set to one, this indicates that the caller wants to use the
17600 semaphore as a mutex, not a counting semaphore. ACPI CA uses
17601 both types. However, implementers of this call may want to use
17602 different OS primitives depending on the type of semaphore
17603 requested. For example, some operating systems provide separate
17605 "mutex" and "semaphore" interfaces - where the mutex interface is
17606 much faster because it doesn't have all the overhead of a full
17607 semaphore implementation.
17609 Fixed a deadlock problem where a method that accesses the PCI
17610 address space can block forever if it is the first access to the
17613 -------------------------------------------
17614 Summary of changes for this label: 06_02_00
17616 Support for environments that cannot handle unaligned data
17617 accesses (e.g. firmware and OS environments devoid of alignment
17618 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
17619 been added (via configurable macros) in these three areas: -
17620 Transfer of data from the raw AML byte stream is done via byte
17621 moves instead of word/dword/qword moves. - External objects are
17622 aligned within the user buffer, including package elements (sub-
17623 objects). - Conversion of name strings to UINT32 Acpi Names is now
17626 The Store operator was modified to mimic Microsoft's
17627 implementation when storing to a Buffer Field.
17629 Added a check of the BM_STS bit before entering C3.
17631 The methods subdirectory has been obsoleted and removed. A new
17632 file, cmeval.c subsumes the functionality.
17634 A 16-bit (DOS) version of AcpiExec has been developed. The
17635 makefile is under the acpiexec directory.