1 ----------------------------------------
2 10 November 2017. Summary of changes for version 20171110:
5 1) ACPICA kernel-resident subsystem:
7 This release implements full support for ACPI 6.2A:
8 NFIT - Added a new subtable, "Platform Capabilities Structure"
9 No other changes to ACPICA were required, since ACPI 6.2A is primarily an
10 errata release of the specification.
12 Other ACPI table changes:
13 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo
14 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy
17 Utilities: Modified the string/integer conversion functions to use
18 internal 64-bit divide support instead of a native divide. On 32-bit
19 platforms, a 64-bit divide typically requires a library function which
20 may not be present in the build (kernel or otherwise).
22 Implemented a targeted error message for timeouts returned from the
23 Embedded Controller device driver. This is seen frequently enough to
24 special-case an AE_TIME returned from an EC operation region access:
25 "Timeout from EC hardware or EC device driver"
27 Changed the "ACPI Exception" message prefix to "ACPI Error" so that all
28 runtime error messages have the identical prefix.
31 2) iASL Compiler/Disassembler and Tools:
33 AcpiXtract: Fixed a problem with table header detection within the
34 acpidump file. Processing a table could be ended early if a 0x40 (@)
35 appears in the original binary table, resulting in the @ symbol appearing
36 in the decoded ASCII field at the end of the acpidump text line. The
37 symbol caused acpixtract to incorrectly think it had reached the end of
38 the current table and the beginning of a new table.
40 AcpiXtract: Added an option (-f) to ignore some errors during table
41 extraction. This initial implementation ignores non-ASCII and non-
42 printable characters found in the acpidump text file.
44 TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics
45 for ASLTS. This feature is used to track memory allocations from
46 different memory caches within the ACPICA code. At the end of an ASLTS
47 run, these memory statistics are recorded and stored in a log file.
49 Debugger (user-space version): Implemented a simple "Background" command.
50 Creates a new thread to execute a control method in the background, while
51 control returns to the debugger prompt to allow additional commands.
52 Syntax: Background <Namepath> [Arguments]
54 ----------------------------------------
55 29 September 2017. Summary of changes for version 20170929:
58 1) ACPICA kernel-resident subsystem:
60 Redesigned and implemented an improved ASL While() loop timeout
61 mechanism. This mechanism is used to prevent infinite loops in the kernel
62 AML interpreter caused by either non-responsive hardware or incorrect AML
63 code. The new implementation uses AcpiOsGetTimer instead of a simple
64 maximum loop count, and is thus more accurate and constant across
65 different machines. The default timeout is currently 30 seconds, but this
66 may be adjusted later.
68 Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to
69 better reflect the new implementation of the loop timeout mechanism.
71 Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support
72 and to fix an off-by-one error. Jung-uk Kim.
74 Fixed an EFI build problem by updating the makefiles to for a new file
75 that was added, utstrsuppt.c
78 2) iASL Compiler/Disassembler and Tools:
80 Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This
81 includes support in the table disassembler, compiler, and template
84 iASL: Added an exception for an illegal type of recursive method
85 invocation. If a method creates named objects, the first recursive call
86 will fail at runtime. This change adds an error detection at compile time
87 to catch the problem up front. Note: Marking such a method as
88 "serialized" will not help with this problem, because the same thread can
89 acquire the method mutex more than once. Example compiler and runtime
99 Error 6152 - ^ Illegal recursive call to method
100 that creates named objects (MTH1)
102 Previous runtime exception:
103 ACPI Error: [INT1] Namespace lookup failure,
104 AE_ALREADY_EXISTS (20170831/dswload2-465)
106 iASL: Updated support for External() opcodes to improve namespace
107 management and error detection. These changes are related to issues seen
108 with multiple-segment namespace pathnames within External declarations,
111 External(\_SB.PCI0.GFX0, DeviceObj)
112 External(\_SB.PCI0.GFX0.ALSI)
114 iASL: Implemented support for multi-line error/warning messages. This
115 enables more detailed and helpful error messages as below, from the
116 initial deployment for the duplicate names error:
118 DSDT.iiii 1692: Device(PEG2) {
119 Error 6074 - ^ Name already exists in scope
122 Original name creation/declaration below:
123 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj)
125 AcpiXtract: Added additional flexibility to support differing input hex
126 dump formats. Specifically, hex dumps that contain partial disassembly
127 and/or comments within the ACPI table data definition. There exist some
128 dump utilities seen in the field that create this type of hex dump (such
129 as Simics). For example:
131 DSDT @ 0xdfffd0c0 (10999 bytes)
139 Creator_id 1280593481
140 Creator_revision 537399345
141 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00
143 2af0: 5f 4c 30 46 00 a4 01
145 Test suite: Miscellaneous changes/fixes:
146 More cleanup and simplification of makefiles
147 Continue compilation of test cases after a compile failure
148 Do not perform binary compare unless both files actually exist
150 iASL: Performed some code/module restructuring. Moved all memory
151 allocation functions to new modules. Two new files, aslallocate.c and
154 ----------------------------------------
155 31 August 2017. Summary of changes for version 20170831:
158 1) ACPICA kernel-resident subsystem:
160 Implemented internal support for full 64-bit addresses that appear in all
161 Generic Address Structure (GAS) structures. Previously, only the lower 32
162 bits were used. Affects the use of GAS structures in the FADT and other
163 tables, as well as the GAS structures passed to the AcpiRead and
164 AcpiWrite public external interfaces that are used by drivers. Lv Zheng.
166 Added header support for the PDTT ACPI table (Processor Debug Trigger
167 Table). Full support in the iASL Data Table Compiler and disassembler is
171 2) iASL Compiler/Disassembler and Tools:
173 iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor
174 Properties Topology Table) where a flag bit was specified in the wrong
175 bit position ("Line Size Valid", bit 6).
177 iASL: Implemented support for Octal integer constants as defined by the
178 ASL language grammar, per the ACPI specification. Any integer constant
179 that starts with a zero is an octal constant. For example,
180 Store (037777, Local0) /* Octal constant */
181 Store (0x3FFF, Local0) /* Hex equivalent */
182 Store (16383, Local0) /* Decimal equivalent */
184 iASL: Improved overflow detection for 64-bit string conversions during
185 compilation of integer constants. "Overflow" in this case means a string
186 that represents an integer that is too large to fit into a 64-bit value.
187 Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to
188 the low-order 32 bits with a warning, as previously implemented. Several
189 new exceptions are defined that indicate a 64-bit overflow, as well as
190 the base (radix) that was used during the attempted conversion. Examples:
191 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW
192 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW
193 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW
195 iASL: Added a warning for the case where a ResourceTemplate is declared
196 with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In
197 this case, the resulting template is created with a single END_TAG
198 descriptor, which is essentially useless.
200 iASL: Expanded the -vw option (ignore specific warnings/remarks) to
201 include compilation error codes as well.
203 ----------------------------------------
204 28 July 2017. Summary of changes for version 20170728:
207 1) ACPICA kernel-resident subsystem:
209 Fixed a regression seen with small resource descriptors that could cause
210 an inadvertent AE_AML_NO_RESOURCE_END_TAG exception.
212 AML interpreter: Implemented a new feature that allows forward references
213 from individual named references within package objects that are
214 contained within blocks of "module-level code". This provides
215 compatibility with other ACPI implementations and supports existing
216 firmware that depends on this feature. Example:
219 If (ABCD) /* An If() at module-level */
221 Name (PKG1, Package()
223 INT1 /* Forward reference to object INT1
229 AML Interpreter: Fixed a problem with the Alias() operator where aliases
230 to some ASL objects were not handled properly. Objects affected are:
231 Mutex, Event, and OperationRegion.
233 AML Debugger: Enhanced to properly handle AML Alias objects. These
234 objects have one level of indirection which was not fully supported by
237 Table Manager: Added support to detect and ignore duplicate SSDTs within
238 the XSDT/RSDT. This error in the XSDT has been seen in the field.
240 EFI and EDK2 support:
241 Enabled /WX flag for MSVC builds
242 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer
243 Added local support for 64-bit multiply and shift operations
244 Added support to compile acpidump.efi on Windows
245 Added OSL function stubs for interfaces not used under EFI
247 Added additional support for the _DMA predefined name. _DMA returns a
248 buffer containing a resource template. This change add support within the
249 resource manager (AcpiWalkResourceBuffer) to walk and parse this list of
250 resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
253 2) iASL Compiler/Disassembler and Tools:
255 iASL: Fixed a problem where the internal input line buffer(s) could
256 overflow if there are very long lines in the input ASL source code file.
257 Implemented buffer management that automatically increases the size of
258 the buffers as necessary.
260 iASL: Added an option (-vx) to "expect" particular remarks, warnings and
261 errors. If the specified exception is not raised during compilation, the
262 compiler emits an error. This is intended to support the ASL test suite,
263 but may be useful in other contexts.
265 iASL: Implemented a new predefined macro, __METHOD__, which returns a
266 string containing the name of the current control method that is being
269 iASL: Implemented debugger and table compiler support for the SDEI ACPI
270 table (Software Delegated Exception Interface). James Morse
271 <james.morse@arm.com>
273 Unix/Linux makefiles: Added an option to disable compile optimizations.
274 The disable occurs when the NOOPT flag is set to TRUE.
275 theracermaster@gmail.com
277 Acpidump: Added support for multiple DSDT and FACS tables. This can occur
278 when there are different tables for 32-bit versus 64-bit.
280 Enhanced error reporting for the ASL test suite (ASLTS) by removing
281 unnecessary/verbose text, and emit the actual line number where an error
282 has occurred. These changes are intended to improve the usefulness of the
285 ----------------------------------------
286 29 June 2017. Summary of changes for version 20170629:
289 1) ACPICA kernel-resident subsystem:
291 Tables: Implemented a deferred ACPI table verification. This is useful
292 for operating systems where the tables cannot be verified in the early
293 initialization stage due to early memory mapping limitations on some
294 architectures. Lv Zheng.
296 Tables: Removed the signature validation for dynamically loaded tables.
297 Provides compatibility with other ACPI implementations. Previously, only
298 SSDT tables were allowed, as per the ACPI specification. Now, any table
299 signature can be used via the Load() operator. Lv Zheng.
301 Tables: Fixed several mutex issues that could cause errors during table
302 acquisition. Lv Zheng.
304 Tables: Fixed a problem where an ACPI warning could be generated if a
305 null pointer was passed to the AcpiPutTable interface. Lv Zheng.
307 Tables: Added a mechanism to handle imbalances for the AcpiGetTable and
308 AcpiPutTable interfaces. This applies to the "late stage" table loading
309 when the use of AcpiPutTable is no longer required (since the system
310 memory manager is fully running and available). Lv Zheng.
312 Fixed/Reverted a regression during processing of resource descriptors
313 that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG
314 exception in this case.
316 Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the
317 I/O Remapping specification. Robin Murphy <robin.murphy@arm.com>
319 Interpreter: Fixed a possible fault if an Alias operator with an invalid
320 or duplicate target is encountered during Alias creation in
321 AcpiExCreateAlias. Alex James <theracermaster@gmail.com>
323 Added an option to use designated initializers for function pointers.
324 Kees Cook <keescook@google.com>
327 2) iASL Compiler/Disassembler and Tools:
329 iASL: Allow compilation of External declarations with target pathnames
330 that refer to existing named objects within the table. Erik Schmauss.
332 iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a
333 FieldUnit name also is declared via External in the same table. Erik
336 iASL: Allow existing scope names within pathnames used in External
337 statements. For example:
338 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external
341 iASL: IORT ACPI table: Implemented changes required to decode the new
342 Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table
343 compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
345 Disassembler: Don't abort disassembly on errors from External()
346 statements. Erik Schmauss.
348 Disassembler: fixed a possible fault when one of the Create*Field
349 operators references a Resource Template. ACPICA Bugzilla 1396.
351 iASL: In the source code, resolved some naming inconsistences across the
352 parsing support. Fixes confusion between "Parse Op" and "Parse Node".
353 Adds a new file, aslparseop.c
355 ----------------------------------------
356 31 May 2017. Summary of changes for version 20170531:
361 The ACPI specification version 6.2 has been released and is available at
362 http://uefi.org/specifications
364 This version of ACPICA fully supports the ACPI 6.2 specification. Changes
365 are summarized below.
367 New ACPI tables (Table Compiler/Disassembler/Templates):
368 HMAT (Heterogeneous Memory Attributes Table)
369 WSMT (Windows SMM Security Mitigation Table)
370 PPTT (Processor Properties Topology Table)
372 New subtables for existing ACPI tables:
373 HEST (New subtable, Arch-deferred machine check)
374 SRAT (New subtable, Arch-specific affinity structure)
375 PCCT (New subtables, Extended PCC subspaces (types 3 and 4))
377 Simple updates for existing ACPI tables:
378 BGRT (two new flag bits)
379 HEST (New bit defined for several subtables, GHES_ASSIST)
381 New Resource Descriptors and Resource macros (Compiler/Disassembler):
387 New type for hardware error notification (section 18.3.2.9)
389 New predefined names/methods (Compiler/Interpreter):
390 _HMA (Heterogeneous Memory Attributes)
391 _LSI (Label Storage Information)
392 _LSR (Label Storage Read)
393 _LSW (Label Storage Write)
395 ASL grammar/macro changes (Compiler):
396 For() ASL macro, implemented with the AML while operator
397 Extensions to Concatenate operator
398 Support for multiple definition blocks in same ASL file
399 Clarification for Buffer operator
400 Allow executable AML code underneath all scopes (Devices, etc.)
401 Clarification/change for the _OSI return value
402 ASL grammar update for reference operators
403 Allow a zero-length string for AML filename in DefinitionBlock
406 New device object notification value
407 Remove a notify value (0x0C) for graceful shutdown
408 New UUIDs for processor/cache properties and
409 physical package property
410 New _HID, ACPI0014 (Wireless Power Calibration Device)
413 1) ACPICA kernel-resident subsystem:
415 Added support to disable ACPI events on hardware-reduced platforms.
416 Eliminates error messages of the form "Could not enable fixed event". Lv
419 Fixed a problem using Device/Thermal objects with the ObjectType and
420 DerefOf ASL operators. This support had not been fully/properly
423 Fixed a problem where if a Buffer object containing a resource template
424 was longer than the actual resource template, an error was generated --
425 even though the AML is legal. This case has been seen in the field.
427 Fixed a problem with the header definition of the MADT PCAT_COMPAT flag.
428 The values for DUAL_PIC and MULTIPLE_APIC were reversed.
430 Added header file changes for the TPM2 ACPI table. Update to new version
431 of the TCG specification. Adds a new TPM2 subtable for ARM SMC.
433 Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex.
434 These interfaces are intended to be used only in conjunction with the
435 predefined _DLM method (Device Lock Method). "This object appears in a
436 device scope when AML access to the device must be synchronized with the
439 Example Code and Data Size: These are the sizes for the OS-independent
440 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
441 debug version of the code includes the debug output trace mechanism and
442 has a much larger code and data size.
445 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total
446 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total
448 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
449 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
452 2) iASL Compiler/Disassembler and Tools:
454 iASL: Fixed a problem where an External() declaration could not refer to
455 a Field Unit. Erik Schmauss.
457 Disassembler: Improved support for the Switch/Case operators. This
458 feature will disassemble AML code back to the original Switch operators
459 when possible, instead of an If..Else sequence. David Box
461 iASL and disassembler: Improved the handling of multiple extraneous
462 parentheses for both ASL input and disassembled ASL output.
464 Improved the behavior of the iASL compiler and disassembler to detect
465 improper use of external declarations
467 Disassembler: Now aborts immediately upon detection of an unknown AML
468 opcode. The AML parser has no real way to recover from this, and can
469 result in the creation of an ill-formed parse tree that causes errors
470 later during the disassembly.
472 All tools: Fixed a problem where the Unix application OSL did not handle
473 control-c correctly. For example, a control-c could incorrectly wake the
476 AcpiExec: Improved the Control-C handling and added a handler for
477 segmentation faults (SIGSEGV). Supports both Windows and Unix-like
480 Reduced the verbosity of the generic unix makefiles. Previously, each
481 compilation displayed the full set of compiler options. This has been
482 eliminated as the options are easily inspected within the makefiles. Each
483 compilation now results in a single line of output.
485 ----------------------------------------
486 03 March 2017. Summary of changes for version 20170303:
491 The licensing information at the start of each source code module has
492 been updated. In addition to the Intel license, the dual GPLv2/BSD
493 license has been added for completeness. Now, a single version of the
494 source code should be suitable for all ACPICA customers. This is the
495 major change for this release since it affects all source code modules.
498 1) ACPICA kernel-resident subsystem:
500 Fixed two issues with the common asltypes.h header that could cause
501 problems in some environments: (Kim Jung-uk)
502 Removed typedef for YY_BUFFER_STATE ?
503 Fixes an error with earlier versions of Flex.
504 Removed use of FILE typedef (which is only defined in stdio.h)
507 2) iASL Compiler/Disassembler and Tools:
509 Disassembler: fixed a regression introduced in 20170224. A fix for a
510 memory leak related to resource descriptor tags (names) could fault when
511 the disassembler was generated with 64-bit compilers.
513 The ASLTS test suite has been updated to implement a new testing
514 architecture. During generation of the suite from ASL source, both the
515 ASL and ASL+ compilers are now validated, as well as the disassembler
516 itself (Erik Schmauss). The architecture executes as follows:
518 For every ASL source module:
519 Compile (legacy ASL compilation)
520 Disassemble the resulting AML to ASL+ source code
521 Compile the new ASL+ module
522 Perform a binary compare on the legacy AML and the new ASL+ AML
523 The ASLTS suite then executes normally using the AML binaries.
525 ----------------------------------------
526 24 February 2017. Summary of changes for version 20170224:
529 1) ACPICA kernel-resident subsystem:
531 Interpreter: Fixed two issues with the control method return value auto-
532 repair feature, where an attempt to double-delete an internal object
533 could result in an ACPICA warning (for _CID repair and others). No fault
534 occurs, however, because the attempted deletion (actually a release to an
535 internal cache) is detected and ignored via object poisoning.
537 Debugger: Fixed an AML interpreter mutex issue during the single stepping
538 of control methods. If certain debugger commands are executed during
539 stepping, a mutex aquire/release error could occur. Lv Zheng.
541 Fixed some issues generating ACPICA with the Intel C compiler by
542 restoring the original behavior and compiler-specific include file in
545 Example Code and Data Size: These are the sizes for the OS-independent
546 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
547 debug version of the code includes the debug output trace mechanism and
548 has a much larger code and data size.
551 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total
552 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total
554 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
555 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
558 2) iASL Compiler/Disassembler and Tools:
560 iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion
561 tool has been designed, implemented, and included in this release. The
562 key feature of this utility is that the original comments within the
563 input ASL file are preserved during the conversion process, and included
564 within the converted ASL+ file -- thus creating a transparent conversion
565 of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss.
567 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with
570 iASL/Disassembler: Improved the detection and correct disassembly of
571 Switch/Case operators. This feature detects sequences of if/elseif/else
572 operators that originated from ASL Switch/Case/Default operators and
573 emits the original operators. David Box.
575 iASL: Improved the IORT ACPI table support in the following areas. Lv
577 Clear MappingOffset if the MappingCount is zero.
578 Fix the disassembly of the SMMU GSU interrupt offset.
579 Update the template file for the IORT table.
581 Disassembler: Enhanced the detection and disassembly of resource
582 template/descriptor within a Buffer object. An EndTag descriptor is now
583 required to have a zero second byte, since all known ASL compilers emit
584 this. This helps eliminate incorrect decisions when a buffer is
585 disassembled (false positives on resource templates).
587 ----------------------------------------
588 19 January 2017. Summary of changes for version 20170119:
591 1) General ACPICA software:
593 Entire source code base: Added the 2017 copyright to all source code
594 legal/licensing module headers and utility/tool signons. This includes
595 the standard Linux dual-license header. This affects virtually every file
596 in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and
597 the ACPICA test suite.
600 2) iASL Compiler/Disassembler and Tools:
602 iASL: Removed/fixed an inadvertent remark when a method argument
603 containing a reference is used as a target operand within the method (and
604 never used as a simple argument), as in the example below. Jeffrey Hugo.
606 dsdt.asl 1507: Store(0x1, Arg0)
607 Remark 2146 - ^ Method Argument is never used (Arg0)
609 All tools: Removed the bit width of the compiler that generated the tool
610 from the common signon for all user space tools. This proved to be
611 confusing and unnecessary. This includes similar removal of HARDWARE_NAME
612 from the generic makefiles (Thomas Petazzoni). Example below.
615 ASL+ Optimizing Compiler version 20170119-32
616 ASL+ Optimizing Compiler version 20170119-64
619 ASL+ Optimizing Compiler version 20170119
621 ----------------------------------------
622 22 December 2016. Summary of changes for version 20161222:
625 1) ACPICA kernel-resident subsystem:
627 AML Debugger: Implemented a new mechanism to simplify and enhance
628 debugger integration into all environments, including kernel debuggers
629 and user-space utilities, as well as remote debug services. This
630 mechanism essentially consists of new OSL interfaces to support debugger
631 initialization/termination, as well as wait/notify interfaces to perform
632 the debugger handshake with the host. Lv Zheng.
635 AcpiOsInitializeDebugger (void)
636 AcpiOsTerminateDebugger (void)
637 AcpiOsWaitCommandReady (void)
638 AcpiOsNotifyCommandComplete (void)
640 New OS services layer:
641 osgendbg.c -- Example implementation, and used for AcpiExec
643 Update for Generic Address Space (GAS) support: Although the AccessWidth
644 and/or BitOffset fields of the GAS are not often used, this change now
645 fully supports these fields. This affects the internal support for FADT
646 registers, registers in other ACPI data tables, and the AcpiRead and
647 AcpiWrite public interfaces. Lv Zheng.
649 Sleep support: In order to simplify integration of ACPI sleep for the
650 various host operating systems, a new OSL interface has been introduced.
651 AcpiOsEnterSleep allows the host to perform any required operations
652 before the final write to the sleep control register(s) is performed by
656 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue)
658 Called from these internal interfaces:
662 EFI support: Added a very small EFI/ACPICA example application. Provides
663 a simple demo for EFI integration, as well as assisting with resolution
664 of issues related to customer ACPICA/EFI integration. Lv Zheng. See:
666 source/tools/efihello/efihello.c
668 Local C library: Implemented several new functions to enhance ACPICA
669 portability, for environments where these clib functions are not
670 available (such as EFI). Lv Zheng:
677 Fixed a regression where occasionally a valid resource descriptor was
678 incorrectly detected as invalid at runtime, and a
679 AE_AML_NO_RESOURCE_END_TAG was returned.
681 Fixed a problem with the recently implemented support that enables
682 control method invocations as Target operands to many ASL operators.
683 Warnings of this form: "Needed type [Reference], found [Processor]" were
684 seen at runtime for some method invocations.
686 Example Code and Data Size: These are the sizes for the OS-independent
687 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
688 debug version of the code includes the debug output trace mechanism and
689 has a much larger code and data size.
692 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total
693 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total
695 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
696 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
699 2) iASL Compiler/Disassembler and Tools:
701 Disassembler: Enhanced output by adding the capability to detect and
702 disassemble ASL Switch/Case statements back to the original ASL source
703 code instead of if/else blocks. David Box.
705 AcpiHelp: Split a large file into separate files based upon
706 functionality/purpose. New files are:
710 ----------------------------------------
711 17 November 2016. Summary of changes for version 20161117:
714 1) ACPICA kernel-resident subsystem:
716 Table Manager: Fixed a regression introduced in 20160729, "FADT support
717 cleanup". This was an attempt to remove all references in the source to
718 the FADT version 2, which never was a legal version number. It was
719 skipped because it was an early version of 64-bit support that was
720 eventually abandoned for the current 64-bit support.
722 Interpreter: Fixed a problem where runtime implicit conversion was
723 incorrectly disabled for the ASL operators below. This brings the
724 behavior into compliance with the ACPI specification:
732 Table Manager: Added a new public interface, AcpiPutTable, used to
733 release and free an ACPI table returned by AcpiGetTable and related
734 interfaces. Lv Zheng.
736 Example Code and Data Size: These are the sizes for the OS-independent
737 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
738 debug version of the code includes the debug output trace mechanism and
739 has a much larger code and data size.
742 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total
743 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total
745 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
746 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
749 2) iASL Compiler/Disassembler and Tools:
751 Disassembler: Fixed a regression for disassembly of Resource Template.
752 Detection of templates in the AML stream missed some types of templates.
754 iASL: Fixed a problem where an Access Size error was returned for the PCC
755 address space when the AccessSize of the GAS register is greater than a
758 iASL: Implemented several grammar changes for the operators below. These
759 changes are slated for the next version of the ACPI specification:
760 RefOf - Disallow method invocation as an operand
761 CondRefOf - Disallow method invocation as an operand
762 DerefOf - Disallow operands that use the result from operators
764 do not return a reference (Changed TermArg to
767 iASL: Control method invocations are now allowed for Target operands, as
768 per the ACPI specification. Removed error for using a control method
769 invocation as a Target operand.
771 Disassembler: Improved detection of Resource Templates, Unicode, and
772 Strings within Buffer objects. These subtypes do not contain a specific
773 opcode to indicate the originating ASL code, and they must be detected by
774 other means within the disassembler.
776 iASL: Implemented an optimization improvement for 32-bit ACPI tables
777 (DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode
778 only after 64-bit to 32-bit truncation. A truncation warning message is
779 still emitted, however.
781 AcpiXtract: Implemented handling for both types of line terminators (LF
782 or CR/LF) so that it can accept AcpiDump output files from any system.
785 AcpiBin: Added two new options for comparing AML files:
786 -a: compare and display ALL mismatches
787 -o: start compare at this offset into the second file
789 ----------------------------------------
790 30 September 2016. Summary of changes for version 20160930:
793 1) ACPICA kernel-resident subsystem:
795 Fixed a regression in the internal AcpiTbFindTable function where a non
796 AE_OK exception could inadvertently be returned even if the function did
797 not fail. This problem affects the following operators:
801 Fixed a regression in the LoadTable operator where a load to any
802 namespace location other than the root no longer worked properly.
804 Increased the maximum loop count value that will result in the
805 AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to
806 prevent infinite loops within the AML interpreter and thus the host OS
807 kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to
810 Moved the AcpiGbl_MaxLoopIterations configuration variable to the public
811 acpixf.h file. This allows hosts to easily configure the maximum loop
814 Removed an illegal character in the strtoul64.c file. This character
815 caused errors with some C compilers.
817 Example Code and Data Size: These are the sizes for the OS-independent
818 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
819 debug version of the code includes the debug output trace mechanism and
820 has a much larger code and data size.
823 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total
824 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total
826 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total
827 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
830 2) iASL Compiler/Disassembler and Tools:
832 Disassembler: Fixed a problem with the conversion of Else{If{ blocks into
833 the simpler ASL ElseIf keyword. During the conversion, a trailing If
834 block could be lost and missing from the disassembled output.
836 iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+,
837 the missing rule caused a parse error when using the Index operator as an
838 operand to ObjectType. This construct now compiles properly. Example:
841 iASL: Correctly handle unresolved symbols in the hardware map file (-lm
842 option). Previously, unresolved symbols could cause a protection fault.
843 Such symbols are now marked as unresolved in the map file.
845 iASL: Implemented support to allow control method invocations as an
846 operand to the ASL DeRefOf operator. Example:
847 DeRefOf(MTH1(Local0))
849 Disassembler: Improved support for the ToPLD ASL macro. Detection of a
850 possible _PLD buffer now includes examination of both the normal buffer
851 length (16 or 20) as well as the surrounding AML package length.
853 Disassembler: Fixed a problem with the decoding of complex expressions
854 within the Divide operator for ASL+. For the case where both the quotient
855 and remainder targets are specified, the entire statement cannot be
856 disassembled. Previously, the output incorrectly contained a mix of ASL-
857 and ASL+ operators. This mixed statement causes a syntax error when
859 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly
861 Divide (INT1 + 6, 128, RSLT, QUOT)
863 iASL/Tools: Added support to process AML and non-AML ACPI tables
864 consistently. For the disassembler and AcpiExec, allow all types of ACPI
865 tables (AML and data tables). For the iASL -e option, allow only AML
868 ----------------------------------------
869 31 August 2016. Summary of changes for version 20160831:
872 1) ACPICA kernel-resident subsystem:
874 Improve support for the so-called "module-level code", which is defined
875 to be math, logical and control AML opcodes that appear outside of any
876 control method. This change improves the support by adding more opcodes
877 that can be executed in the manner. Some other issues have been solved,
878 and the ASL grammar changes to support such code under all scope
879 operators (Device, etc.) are complete. Lv Zheng.
881 UEFI support: these OSL functions have been implemented. This is an
882 additional step toward supporting the AcpiExec utility natively (with
883 full hardware access) under UEFI. Marcelo Ferreira.
884 AcpiOsReadPciConfiguration
885 AcpiOsWritePciConfiguration
887 Fixed a possible mutex error during control method auto-serialization. Lv
890 Updated support for the Generic Address Structure by fully implementing
891 all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv
894 Updated the return value for the internal _OSI method. Instead of
895 0xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF
896 for 64-bit ACPI tables. This fixes an incompatibility with other ACPI
897 implementations, and will be reflected and clarified in the next version
898 of the ACPI specification.
900 Implemented two new table events that can be passed to an ACPICA table
901 handler. These events are used to indicate a table installation or
902 uninstallation. These events are used in addition to existed table load
903 and unload events. Lv Zheng.
905 Implemented a cleanup for all internal string-to-integer conversions.
906 Consolidate multiple versions of this functionality and limit possible
907 bases to either 10 or 16 to simplify the code. Adds a new file,
910 Cleanup the inclusion order of the various compiler-specific headers.
911 This simplifies build configuration management. The compiler-specific
912 headers are now split out from the host-specific headers. Lv Zheng.
914 Example Code and Data Size: These are the sizes for the OS-independent
915 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
916 debug version of the code includes the debug output trace mechanism and
917 has a much larger code and data size.
920 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total
921 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total
924 2) iASL Compiler/Disassembler and Tools:
926 iASL/AcpiExec: Added a command line option to display the build date/time
927 of the tool (-vd). This can be useful to verify that the correct version
928 of the tools are being used.
930 AML Debugger: Implemented a new subcommand ("execute predef") to execute
931 all predefined control methods and names within the current namespace.
932 This can be useful for debugging problems with ACPI tables and the ACPI
935 ----------------------------------------
936 29 July 2016. Summary of changes for version 20160729:
939 1) ACPICA kernel-resident subsystem:
941 Implemented basic UEFI support for the various ACPICA tools. This
943 1) An OSL to implement the various AcpiOs* interfaces on UEFI.
944 2) Support to obtain the ACPI tables on UEFI.
945 3) Local implementation of required C library functions not available on
947 4) A front-end (main) function for the tools for UEFI-related
950 The initial deployment of this support is the AcpiDump utility executing
951 as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit").
952 Current environments supported are Linux/Unix. MSVC generation is not
953 supported at this time. See the generate/efi/README file for build
954 instructions. Lv Zheng.
956 Future plans include porting the AcpiExec utility to execute natively on
957 the platform with I/O and memory access. This will allow viewing/dump of
958 the platform namespace and native execution of ACPI control methods that
959 access the actual hardware. To fully implement this support, the OSL
960 functions below must be implemented with UEFI interfaces. Any community
961 help in the implementation of these functions would be appreciated:
966 AcpiOsReadPciConfiguration
967 AcpiOsWritePciConfiguration
969 Restructured and standardized the C library configuration for ACPICA,
970 resulting in the various configuration options below. This includes a
971 global restructuring of the compiler-dependent and platform-dependent
972 include files. These changes may affect the existing platform-dependent
973 configuration files on some hosts. Lv Zheng.
975 The current C library configuration options appear below. For any issues,
976 it may be helpful to examine the existing compiler-dependent and
977 platform-dependent files as examples. Lv Zheng.
980 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
982 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
983 2) Unix/Windows/BSD applications:
984 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C
986 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library.
987 3) UEFI applications:
988 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C
990 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library.
991 4) UEFI applications (EDK2/StdLib):
992 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library.
993 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library.
996 AML interpreter: "module-level code" support. Allows for execution of so-
997 called "executable" AML code (math/logical operations, etc.) outside of
998 control methods not just at the module level (top level) but also within
999 any scope declared outside of a control method - Scope{}, Device{},
1000 Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng.
1002 Simplified the configuration of the "maximum AML loops" global option by
1003 adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be
1004 modified at runtime.
1007 Example Code and Data Size: These are the sizes for the OS-independent
1008 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1009 debug version of the code includes the debug output trace mechanism and
1010 has a much larger code and data size.
1013 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total
1014 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total
1017 2) iASL Compiler/Disassembler and Tools:
1019 iASL: Add full support for the RASF ACPI table (RAS Features Table).
1020 Includes disassembler, data table compiler, and header support.
1022 iASL Expand "module-level code" support. Allows for
1023 compilation/disassembly of so-called "executable" AML code (math/logical
1024 operations, etc.) outside of control methods not just at the module level
1025 (top level) but also within any scope declared outside of a control
1026 method - Scope{}, Device{}, Processor{}, PowerResource{}, and
1029 AcpiDump: Added support for dumping all SSDTs on newer versions of
1030 Windows. These tables are now easily available -- SSDTs are not available
1031 through the registry on older versions.
1033 ----------------------------------------
1034 27 May 2016. Summary of changes for version 20160527:
1037 1) ACPICA kernel-resident subsystem:
1039 Temporarily reverted the new arbitrary bit length/alignment support in
1040 AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been
1041 a number of regressions with the new code that need to be fully resolved
1042 and tested before this support can be finally integrated into ACPICA.
1043 Apologies for any inconveniences these issues may have caused.
1045 The ACPI message macros are not configurable (ACPI_MSG_ERROR,
1046 ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR,
1047 and ACPI_MSG_BIOS_WARNING). Lv Zheng.
1049 Fixed a couple of GCC warnings associated with the use of the -Wcast-qual
1050 option. Adds a new return macro, return_STR. Junk-uk Kim.
1052 Example Code and Data Size: These are the sizes for the OS-independent
1053 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1054 debug version of the code includes the debug output trace mechanism and
1055 has a much larger code and data size.
1058 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total
1059 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1061 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1062 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total
1064 ----------------------------------------
1065 22 April 2016. Summary of changes for version 20160422:
1067 1) ACPICA kernel-resident subsystem:
1069 Fixed a regression in the GAS (generic address structure) arbitrary bit
1070 support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior
1071 and incorrect return values. Lv Zheng. ACPICA BZ 1270.
1073 ACPI 6.0: Added support for new/renamed resource macros. One new argument
1074 was added to each of these macros, and the original name has been
1075 deprecated. The AML disassembler will always disassemble to the new
1076 names. Support for the new macros was added to iASL, disassembler,
1077 resource manager, and the acpihelp utility. ACPICA BZ 1274.
1079 I2cSerialBus -> I2cSerialBusV2
1080 SpiSerialBus -> SpiSerialBusV2
1081 UartSerialBus -> UartSerialBusV2
1083 ACPI 6.0: Added support for a new integer field that was appended to the
1084 package object returned by the _BIX method. This adds iASL compile-time
1085 and AML runtime error checking. ACPICA BZ 1273.
1087 ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm
1088 Subspace Type2" (Headers, Disassembler, and data table compiler).
1090 Example Code and Data Size: These are the sizes for the OS-independent
1091 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1092 debug version of the code includes the debug output trace mechanism and
1093 has a much larger code and data size.
1096 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total
1097 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total
1099 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1100 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1103 2) iASL Compiler/Disassembler and Tools:
1105 iASL: Implemented an ASL grammar extension to allow/enable executable
1106 "module-level code" to be created and executed under the various
1107 operators that create new scopes. This type of AML code is already
1108 supported in all known AML interpreters, and the grammar change will
1109 appear in the next version of the ACPI specification. Simplifies the
1110 conditional runtime creation of named objects under these object types:
1118 iASL: Implemented a new ASL extension, a "For" loop macro to add greater
1119 ease-of-use to the ASL language. The syntax is similar to the
1120 corresponding C operator, and is implemented with the existing AML While
1121 opcode -- thus requiring no changes to existing AML interpreters.
1123 For (Initialize, Predicate, Update) {TermList}
1128 Initializer // Nothing | TermArg => ComputationalData
1129 Predicate // Nothing | TermArg => ComputationalData
1130 Update // Nothing | TermArg => ComputationalData
1134 iASL: The _HID/_ADR detection and validation has been enhanced to search
1135 under conditionals in order to allow these objects to be conditionally
1138 iASL: Fixed several issues with the constant folding feature. The
1139 improvement allows better detection and resolution of statements that can
1140 be folded at compile time. ACPICA BZ 1266.
1142 iASL/Disassembler: Fixed a couple issues with the Else{If{}...}
1143 conversion to the ASL ElseIf operator where incorrect ASL code could be
1146 iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where
1147 sometimes an extra (and extraneous) set of parentheses were emitted for
1148 some combinations of operators. Although this did not cause any problems
1149 with recompilation of the disassembled code, it made the code more
1150 difficult to read. David Box. ACPICA BZ 1231.
1152 iASL: Changed to ignore the unreferenced detection for predefined names
1153 of resource descriptor elements, when the resource descriptor is
1154 created/defined within a control method.
1156 iASL: Disassembler: Fix a possible fault with externally declared Buffer
1159 ----------------------------------------
1160 18 March 2016. Summary of changes for version 20160318:
1162 1) ACPICA kernel-resident subsystem:
1164 Added support for arbitrary bit lengths and bit offsets for registers
1165 defined by the Generic Address Structure. Previously, only aligned bit
1166 lengths of 8/16/32/64 were supported. This was sufficient for many years,
1167 but recently some machines have been seen that require arbitrary bit-
1168 level support. ACPICA BZ 1240. Lv Zheng.
1170 Fixed an issue where the \_SB._INI method sometimes must be evaluated
1171 before any _REG methods are evaluated. Lv Zheng.
1173 Implemented several changes related to ACPI table support
1174 (Headers/Disassembler/TableCompiler):
1175 NFIT: For ACPI 6.1, updated to add some additional new fields and
1177 FADT: Updated a warning message and set compliance to ACPI 6.1 (Version
1179 DMAR: Added new constants per the 10/2014 DMAR spec.
1180 IORT: Added new subtable per the 10/2015 IORT spec.
1181 HEST: For ACPI 6.1, added new constants and new subtable.
1182 DBG2: Added new constants per the 12/2015 DBG2 spec.
1183 FPDT: Fixed several incorrect fields, add the FPDT boot record structure.
1185 ERST/EINJ: Updated disassembler with new "Execute Timings" actions.
1187 Updated header support for the DMAR table to match the current version of
1190 Added extensions to the ASL Concatenate operator to allow any ACPI object
1191 to be passed as an operand. Any object other than Integer/String/Buffer
1192 simply returns a string containing the object type. This extends the
1193 usefulness of the Printf macros. Previously, Concatenate would abort the
1194 control method if a non-data object was encountered.
1196 ACPICA source code: Deployed the C "const" keyword across the source code
1197 where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD).
1199 Example Code and Data Size: These are the sizes for the OS-independent
1200 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1201 debug version of the code includes the debug output trace mechanism and
1202 has a much larger code and data size.
1205 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total
1206 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total
1208 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1209 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1212 2) iASL Compiler/Disassembler and Tools:
1214 iASL/Disassembler: Improved the heuristic used to determine the number of
1215 arguments for an externally defined control method (a method in another
1216 table). Although this is an improvement, there is no deterministic way to
1217 "guess" the number of method arguments. Only the ACPI 6.0 External opcode
1218 will completely solve this problem as it is deployed (automatically) in
1221 iASL/Disassembler: Fixed an ordering issue for emitted External() ASL
1222 statements that could cause errors when the disassembled file is
1223 compiled. ACPICA BZ 1243. David Box.
1225 iASL: Fixed a regression caused by the merger of the two versions of the
1226 local strtoul64. Because of a dependency on a global variable, strtoul64
1227 could return an error for integers greater than a 32-bit value. ACPICA BZ
1230 iASL: Fixed a regression where a fault could occur for an ASL Return
1231 statement if it invokes a control method that is not resolved. ACPICA BZ
1234 AcpiXtract: Improved input file validation: detection of binary files and
1235 non-acpidump text files.
1237 ----------------------------------------
1238 12 February 2016. Summary of changes for version 20160212:
1240 1) ACPICA kernel-resident subsystem:
1242 Implemented full support for the ACPI 6.1 specification (released in
1243 January). This version of the specification is available at:
1244 http://www.uefi.org/specifications
1246 Only a relatively small number of changes were required in ACPICA to
1247 support ACPI 6.1, in these areas:
1248 - New predefined names
1250 - A new subtable for HEST
1251 - A few other header changes for new values
1253 Ensure \_SB_._INI is executed before any _REG methods are executed. There
1254 appears to be existing BIOS code that relies on this behavior. Lv Zheng.
1256 Reverted a change made in version 20151218 which enabled method
1257 invocations to be targets of various ASL operators (SuperName and Target
1258 grammar elements). While the new behavior is supported by the ACPI
1259 specification, other AML interpreters do not support this behavior and
1260 never will. The ACPI specification will be updated for ACPI 6.2 to remove
1261 this support. Therefore, the change was reverted to the original ACPICA
1264 ACPICA now supports the GCC 6 compiler.
1266 Current Release: (Note: build changes increased sizes)
1267 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total
1268 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total
1270 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1271 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total
1274 2) iASL Compiler/Disassembler and Tools:
1276 Completed full support for the ACPI 6.0 External() AML opcode. The
1277 compiler emits an external AML opcode for each ASL External statement.
1278 This opcode is used by the disassembler to assist with the disassembly of
1279 external control methods by specifying the required number of arguments
1280 for the method. AML interpreters do not use this opcode. To ensure that
1281 interpreters do not even see the opcode, a block of one or more external
1282 opcodes is surrounded by an "If(0)" construct. As this feature becomes
1283 commonly deployed in BIOS code, the ability of disassemblers to correctly
1284 disassemble AML code will be greatly improved. David Box.
1286 iASL: Implemented support for an optional cross-reference output file.
1287 The -lx option will create a the cross-reference file with the suffix
1288 "xrf". Three different types of cross-reference are created in this file:
1289 - List of object references made from within each control method
1290 - Invocation (caller) list for each user-defined control method
1291 - List of references to each non-method object in the namespace
1293 iASL: Method invocations as ASL Target operands are now disallowed and
1294 flagged as errors in preparation for ACPI 6.2 (see the description of the
1297 ----------------------------------------
1298 8 January 2016. Summary of changes for version 20160108:
1300 1) ACPICA kernel-resident subsystem:
1302 Updated all ACPICA copyrights and signons to 2016: Added the 2016
1303 copyright to all source code module headers and utility/tool signons.
1304 This includes the standard Linux dual-license header. This affects
1305 virtually every file in the ACPICA core subsystem, iASL compiler, all
1306 ACPICA utilities, and the ACPICA test suite.
1308 Fixed a regression introduced in version 20151218 concerning the
1309 execution of so-called module-level ASL/AML code. Namespace objects
1310 created under a module-level If() construct were not properly/fully
1311 entered into the namespace and could cause an interpreter fault when
1314 Example Code and Data Size: These are the sizes for the OS-independent
1315 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1316 debug version of the code includes the debug output trace mechanism and
1317 has a much larger code and data size.
1320 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total
1321 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total
1323 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1324 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1327 2) iASL Compiler/Disassembler and Tools:
1329 Fixed a problem with the compilation of the GpioIo and GpioInt resource
1330 descriptors. The _PIN field name was incorrectly defined to be an array
1331 of 32-bit values, but the _PIN values are in fact 16 bits each. This
1332 would cause incorrect bit width warnings when using Word (16-bit) fields
1333 to access the descriptors.
1336 ----------------------------------------
1337 18 December 2015. Summary of changes for version 20151218:
1339 1) ACPICA kernel-resident subsystem:
1341 Implemented per-AML-table execution of "module-level code" as individual
1342 ACPI tables are loaded into the namespace during ACPICA initialization.
1343 In other words, any module-level code within an AML table is executed
1344 immediately after the table is loaded, instead of batched and executed
1345 after all of the tables have been loaded. This provides compatibility
1346 with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng,
1349 To fully support the feature above, the default operation region handlers
1350 for the SystemMemory, SystemIO, and PCI_Config address spaces are now
1351 installed before any ACPI tables are loaded. This enables module-level
1352 code to access these address spaces during the table load and module-
1353 level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David
1356 Implemented several changes to the internal _REG support in conjunction
1357 with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples
1358 utilities for the changes above. Although these tools were changed, host
1359 operating systems that simply use the default handlers for SystemMemory,
1360 SystemIO, and PCI_Config spaces should not require any update. Lv Zheng.
1362 For example, in the code below, DEV1 is conditionally added to the
1363 namespace by the DSDT via module-level code that accesses an operation
1364 region. The SSDT references DEV1 via the Scope operator. DEV1 must be
1365 created immediately after the DSDT is loaded in order for the SSDT to
1366 successfully reference DEV1. Previously, this code would cause an
1367 AE_NOT_EXIST exception during the load of the SSDT. Now, this code is
1368 fully supported by ACPICA.
1370 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1)
1372 OperationRegion (OPR1, SystemMemory, 0x400, 32)
1373 Field (OPR1, AnyAcc, NoLock, Preserve)
1384 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1)
1386 External (\DEV1, DeviceObj)
1392 Fixed an AML interpreter problem where control method invocations were
1393 not handled correctly when the invocation was itself a SuperName argument
1394 to another ASL operator. In these cases, the method was not invoked.
1395 ACPICA BZ 1002. Affects the following ASL operators that have a SuperName
1400 Decrement, Increment
1403 Signal, Release, Reset
1406 Implemented automatic String-to-ObjectReference conversion support for
1407 packages returned by predefined names (such as _DEP). A common BIOS error
1408 is to add double quotes around an ObjectReference namepath, which turns
1409 the reference into an unexpected string object. This support detects the
1410 problem and corrects it before the package is returned to the caller that
1411 invoked the method. Lv Zheng.
1413 Implemented extensions to the Concatenate operator. Concatenate now
1414 accepts any type of object, it is not restricted to simply
1415 Integer/String/Buffer. For objects other than these 3 basic data types,
1416 the argument is treated as a string containing the name of the object
1417 type. This expands the utility of Concatenate and the Printf/Fprintf
1418 macros. ACPICA BZ 1222.
1420 Cleaned up the output of the ASL Debug object. The timer() value is now
1421 optional and no longer emitted by default. Also, the basic data types of
1422 Integer/String/Buffer are simply emitted as their values, without a data
1423 type string -- since the data type is obvious from the output. ACPICA BZ
1426 Example Code and Data Size: These are the sizes for the OS-independent
1427 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1428 debug version of the code includes the debug output trace mechanism and
1429 has a much larger code and data size.
1432 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total
1433 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total
1435 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1436 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1439 2) iASL Compiler/Disassembler and Tools:
1441 iASL: Fixed some issues with the ASL Include() operator. This operator
1442 was incorrectly defined in the iASL parser rules, causing a new scope to
1443 be opened for the code within the include file. This could lead to
1444 several issues, including allowing ASL code that is technically illegal
1445 and not supported by AML interpreters. Note, this does not affect the
1446 related #include preprocessor operator. ACPICA BZ 1212.
1448 iASL/Disassembler: Implemented support for the ASL ElseIf operator. This
1449 operator is essentially an ASL macro since there is no AML opcode
1450 associated with it. The code emitted by the iASL compiler for ElseIf is
1451 an Else opcode followed immediately by an If opcode. The disassembler
1452 will now emit an ElseIf if it finds an Else immediately followed by an
1453 If. This simplifies the decoded ASL, especially for deeply nested
1454 If..Else and large Switch constructs. Thus, the disassembled code more
1455 closely follows the original source ASL. ACPICA BZ 1211. Example:
1467 ElseIf (Arg0 == 0x02)
1472 AcpiExec: Added support for the new module level code behavior and the
1473 early region installation. This required a small change to the
1474 initialization, since AcpiExec must install its own operation region
1477 AcpiExec: Added support to make the debug object timer optional. Default
1478 is timer disabled. This cleans up the debug object output -- the timer
1479 data is rarely used.
1481 AcpiExec: Multiple ACPI tables are now loaded in the order that they
1482 appear on the command line. This can be important when there are
1483 interdependencies/references between the tables.
1485 iASL/Templates. Add support to generate template files with multiple
1486 SSDTs within a single output file. Also added ommand line support to
1487 specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ
1491 ----------------------------------------
1492 24 November 2015. Summary of changes for version 20151124:
1494 1) ACPICA kernel-resident subsystem:
1496 Fixed a possible regression for a previous update to FADT handling. The
1497 FADT no longer has a fixed table ID, causing some issues with code that
1498 was hardwired to a specific ID. Lv Zheng.
1500 Fixed a problem where the method auto-serialization could interfere with
1501 the current SyncLevel. This change makes the auto-serialization support
1502 transparent to the SyncLevel support and management.
1504 Removed support for the _SUB predefined name in AcpiGetObjectInfo. This
1505 interface is intended for early access to the namespace during the
1506 initial namespace device discovery walk. The _SUB method has been seen to
1507 access operation regions in some cases, causing errors because the
1508 operation regions are not fully initialized.
1510 AML Debugger: Fixed some issues with the terminate/quit/exit commands
1511 that can cause faults. Lv Zheng.
1513 AML Debugger: Add thread ID support so that single-step mode only applies
1514 to the AML Debugger thread. This prevents runtime errors within some
1517 Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx
1518 methods that are invoked by this interface are optional, removed warnings
1519 emitted for the case where one or more of these methods do not exist.
1520 ACPICA BZ 1208, original change by Prarit Bhargava.
1522 Made a major pass through the entire ACPICA source code base to
1523 standardize formatting that has diverged a bit over time. There are no
1524 functional changes, but this will of course cause quite a few code
1525 differences from the previous ACPICA release.
1527 Example Code and Data Size: These are the sizes for the OS-independent
1528 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1529 debug version of the code includes the debug output trace mechanism and
1530 has a much larger code and data size.
1533 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total
1534 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total
1536 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1537 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1540 2) iASL Compiler/Disassembler and Tools:
1542 iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple
1543 definition blocks within a single ASL file and the resulting AML file.
1544 Support for this type of file was also added to the various tools that
1545 use binary AML files: acpiexec, acpixtract, and the AML disassembler. The
1546 example code below shows two definition blocks within the same file:
1548 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template",
1552 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01)
1556 iASL: Enhanced typechecking for the Name() operator. All expressions for
1557 the value of the named object must be reduced/folded to a single constant
1558 at compile time, as per the ACPI specification (the AML definition of
1561 iASL: Fixed some code indentation issues for the -ic and -ia options (C
1562 and assembly headers). Now all emitted code correctly begins in column 1.
1564 iASL: Added an error message for an attempt to open a Scope() on an
1565 object defined in an SSDT. The DSDT is always loaded into the namespace
1566 first, so any attempt to open a Scope on an SSDT object will fail at
1570 ----------------------------------------
1571 30 September 2015. Summary of changes for version 20150930:
1573 1) ACPICA kernel-resident subsystem:
1575 Debugger: Implemented several changes and bug fixes to assist support for
1576 the in-kernel version of the AML debugger. Lv Zheng.
1577 - Fix the "predefined" command for in-kernel debugger.
1578 - Do not enter debug command loop for the help and version commands.
1579 - Disallow "execute" command during execution/single-step of a method.
1581 Interpreter: Updated runtime typechecking for all operators that have
1582 target operands. The operand is resolved and validated that it is legal.
1583 For example, the target cannot be a non-data object such as a Device,
1584 Mutex, ThermalZone, etc., as per the ACPI specification.
1586 Debugger: Fixed the double-mutex user I/O handshake to work when local
1587 deadlock detection is enabled.
1589 Debugger: limited display of method locals and arguments (LocalX and
1590 ArgX) to only those that have actually been initialized. This prevents
1591 lines of extraneous output.
1593 Updated the definition of the NFIT table to correct the bit polarity of
1594 one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED
1596 Example Code and Data Size: These are the sizes for the OS-independent
1597 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1598 debug version of the code includes the debug output trace mechanism and
1599 has a much larger code and data size.
1602 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
1603 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total
1605 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1606 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1609 2) iASL Compiler/Disassembler and Tools:
1611 iASL: Improved the compile-time typechecking for operands of many of the
1614 -- Added an option to disable compiler operand/operator typechecking (-
1617 -- For the following operators, the TermArg operands are now validated
1618 when possible to be Integer data objects: BankField, OperationRegion,
1619 DataTableRegion, Buffer, and Package.
1621 -- Store (Source, Target): Both the source and target operands are
1622 resolved and checked that the operands are both legal. For example,
1623 neither operand can be a non-data object such as a Device, Mutex,
1624 ThermalZone, etc. Note, as per the ACPI specification, the CopyObject
1625 operator can be used to store an object to any type of target object.
1627 -- Store (Source, Target): If the source is a Package object, the target
1628 must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target
1629 is a Package, the source must also be a Package.
1631 -- Store (Source, Target): A warning is issued if the source and target
1632 resolve to the identical named object.
1634 -- Store (Source, <method invocation>): An error is generated for the
1635 target method invocation, as this construct is not supported by the AML
1638 -- For all ASL math and logic operators, the target operand must be a
1639 data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This
1640 includes the function return value also.
1642 -- External declarations are also included in the typechecking where
1643 possible. External objects defined using the UnknownObj keyword cannot be
1644 typechecked, however.
1646 iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index
1648 - Legacy code: Index(PKG1, 3)
1649 - New ASL+ code: PKG1[3]
1650 This completes the ACPI 6.0 ASL+ support as it was the only operator not
1653 iASL: Fixed the file suffix for the preprocessor output file (.i). Two
1654 spaces were inadvertently appended to the filename, causing file access
1655 and deletion problems on some systems.
1657 ASL Test Suite (ASLTS): Updated the master makefile to generate all
1658 possible compiler output files when building the test suite -- thus
1659 exercising these features of the compiler. These files are automatically
1660 deleted when the test suite exits.
1663 ----------------------------------------
1664 18 August 2015. Summary of changes for version 20150818:
1666 1) ACPICA kernel-resident subsystem:
1668 Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv
1669 Zheng. ACPICA BZ 1186.
1671 Completed development to ensure that the ACPICA Disassembler and Debugger
1672 are fully standalone components of ACPICA. Removed cross-component
1673 dependences. Lv Zheng.
1675 The max-number-of-AML-loops is now runtime configurable (previously was
1676 compile-time only). This is essentially a loop timeout to force-abort
1677 infinite AML loops. ACPCIA BZ 1192.
1679 Debugger: Cleanup output to dump ACPI names and namepaths without any
1680 trailing underscores. Lv Zheng. ACPICA BZ 1135.
1682 Removed unnecessary conditional compilations across the Debugger and
1683 Disassembler components where entire modules could be left uncompiled.
1685 The aapits test is deprecated and has been removed from the ACPICA git
1686 tree. The test has never been completed and has not been maintained, thus
1687 becoming rather useless. ACPICA BZ 1015, 794.
1689 A batch of small changes to close bugzilla and other reports:
1690 - Remove duplicate code for _PLD processing. ACPICA BZ 1176.
1691 - Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185.
1692 - iASL: Support POSIX yacc again in makefile. Jung-uk Kim.
1693 - ACPI table support: general cleanup and simplification. Lv Zheng, Bob
1695 - ACPI table support: fix for a buffer read overrun in AcpiTbFindTable.
1697 - Enhance parameter validation for DataTableRegion and LoadTable ASL/AML
1699 - Debugger: Split debugger initialization/termination interfaces. Lv
1701 - AcpiExec: Emit OemTableId for SSDTs during the load phase for table
1703 - AcpiExec: Add debug message during _REG method phase during table
1705 - AcpiNames: Fix a regression where some output was missing and no longer
1707 - Debugger: General cleanup and simplification. Lv Zheng.
1708 - Disassembler: Cleanup use of several global option variables. Lv Zheng.
1710 Example Code and Data Size: These are the sizes for the OS-independent
1711 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1712 debug version of the code includes the debug output trace mechanism and
1713 has a much larger code and data size.
1716 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total
1717 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total
1719 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1720 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1723 2) iASL Compiler/Disassembler and Tools:
1725 AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT
1726 were not handled properly and caused load errors. Now, properly invoke
1727 and use the ACPICA auto-reallocate mechanism for ACPI table data
1728 structures. ACPICA BZ 1188
1730 AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA
1733 AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For
1734 AcpiExec, this means that no control methods (like _REG/_INI/_STA) are
1735 executed during initialization. ACPICA BZ 1187, 1189.
1737 iASL/Disassembler: Implemented a prototype "listing" mode that emits AML
1738 that corresponds to each disassembled ASL statement, to simplify
1739 debugging. ACPICA BZ 1191.
1741 Debugger: Add option to the "objects" command to display a summary of the
1742 current namespace objects (Object type and count). This is displayed if
1743 the command is entered with no arguments.
1745 AcpiNames: Add -x option to specify debug level, similar to AcpiExec.
1748 ----------------------------------------
1749 17 July 2015. Summary of changes for version 20150717:
1751 1) ACPICA kernel-resident subsystem:
1753 Improved the partitioning between the Debugger and Disassembler
1754 components. This allows the Debugger to be used standalone within kernel
1755 code without the Disassembler (which is used for single stepping also).
1756 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
1758 Debugger: Implemented a new command to trace the execution of control
1759 methods (Trace). This is especially useful for the in-kernel version of
1760 the debugger when file I/O may not be available for method trace output.
1761 See the ACPICA reference for more information. Lv Zheng.
1763 Moved all C library prototypes (used for the local versions of these
1764 functions when requested) to a new header, acclib.h
1765 Cleaned up the use of non-ANSI C library functions. These functions are
1766 implemented locally in ACPICA. Moved all such functions to a common
1767 source file, utnonansi.c
1769 Debugger: Fixed a problem with the "!!" command (get last command
1770 executed) where the debugger could enter an infinite loop and eventually
1773 Removed the use of local macros that were used for some of the standard C
1774 library functions to automatically cast input parameters. This mostly
1775 affected the is* functions where the input parameter is defined to be an
1776 int. This required a few modifications to the main ACPICA source code to
1777 provide casting for these functions and eliminate possible compiler
1778 warnings for these parameters.
1780 Across the source code, added additional status/error checking to resolve
1781 issues discovered by static source code analysis tools such as Coverity.
1783 Example Code and Data Size: These are the sizes for the OS-independent
1784 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1785 debug version of the code includes the debug output trace mechanism and
1786 has a much larger code and data size.
1789 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
1790 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
1792 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1793 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1796 2) iASL Compiler/Disassembler and Tools:
1798 iASL: Fixed a regression where the device map file feature no longer
1799 worked properly when used in conjunction with the disassembler. It only
1800 worked properly with the compiler itself.
1802 iASL: Implemented a new warning for method LocalX variables that are set
1803 but never used (similar to a C compiler such as gcc). This also applies
1804 to ArgX variables that are not defined by the parent method, and are
1805 instead (legally) used as local variables.
1807 iASL/Preprocessor: Finished the pass-through of line numbers from the
1808 preprocessor to the compiler. This ensures that compiler errors/warnings
1809 have the correct original line numbers and filenames, regardless of any
1812 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
1813 pass-through of comments to the preprocessor output file (which becomes
1814 the compiler input file). Also fixed a problem with // comments that
1815 appear after a math expression.
1817 iASL: Added support for the TCPA server table to the table compiler and
1818 template generator. (The client table was already previously supported)
1820 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
1821 identify the iASL compiler.
1823 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
1824 multiple times. The new names are ACPI_SIGN_NEGATIVE and
1827 AcpiHelp: Update to expand help messages for the iASL preprocessor
1831 ----------------------------------------
1832 19 June 2015. Summary of changes for version 20150619:
1834 Two regressions in version 20150616 have been addressed:
1836 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
1837 etc.) This update changes ACPICA to only use the standard headers for
1838 functions, or the prototypes for the local versions of the C library
1839 functions. Across the source code, this required some additional casts
1840 for some Clib invocations for portability. Moved all local prototypes to
1841 a new file, acclib.h
1843 Fixes several problems with recent changes to the handling of the FACS
1844 table that could cause some systems not to boot.
1847 ----------------------------------------
1848 16 June 2015. Summary of changes for version 20150616:
1851 1) ACPICA kernel-resident subsystem:
1853 Across the entire ACPICA source code base, the various macros for the C
1854 library functions (such as ACPI_STRLEN, etc.) have been removed and
1855 replaced by the standard C library names (strlen, etc.) The original
1856 purpose for these macros is no longer applicable. This simplification
1857 reduces the number of macros used in the ACPICA source code
1858 significantly, improving readability and maintainability.
1860 Implemented support for a new ACPI table, the OSDT. This table, the
1861 "override" SDT, can be loaded directly by the host OS at boot time. It
1862 enables the replacement of existing namespace objects that were installed
1863 via the DSDT and/or SSDTs. The primary purpose for this is to replace
1864 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
1865 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
1868 Added support for systems with (improperly) two FACS tables -- a "32-bit"
1869 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
1870 X field). This change will support both automatically. There continues to
1871 be systems found with this issue. This support requires a change to the
1872 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
1873 been added to allow the host to select which FACS is desired
1874 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
1877 Added a new feature to allow for systems that do not contain an FACS.
1878 Although this is already supported on hardware-reduced platforms, the
1879 feature has been extended for all platforms. The reasoning is that we do
1880 not want to abort the entire ACPICA initialization just because the
1881 system is seriously buggy and has no FACS.
1883 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
1884 not correctly transcribed from the ACPI specification in ACPICA version
1887 Implemented support for the _CLS object in the AcpiGetObjectInfo external
1890 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
1891 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
1892 compiler also updated. Note: The TCPA "server" table is not supported by
1893 the disassembler/table-compiler at this time.
1895 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
1897 Example Code and Data Size: These are the sizes for the OS-independent
1898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1899 debug version of the code includes the debug output trace mechanism and
1900 has a much larger code and data size.
1903 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
1904 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
1906 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1907 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1910 2) iASL Compiler/Disassembler and Tools:
1912 Disassembler: Fixed a problem with the new symbolic operator disassembler
1913 where incorrect ASL code could be emitted in some cases for the "non-
1914 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
1915 ShiftRight. The actual problem cases seem to be rather unusual in common
1916 ASL code, however. David Box.
1918 Modified the linux version of acpidump to obtain ACPI tables from not
1919 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
1922 iASL: Fixed a problem where the user preprocessor output file (.i)
1923 contained extra data that was not expected. The compiler was using this
1924 file as a temporary file and passed through #line directives in order to
1925 keep compiler error messages in sync with the input file and line number
1926 across multiple include files. The (.i) is no longer a temporary file as
1927 the compiler uses a new, different file for the original purpose.
1929 iASL: Fixed a problem where comments within the original ASL source code
1930 file were not passed through to the preprocessor output file, nor any
1933 iASL: Fixed some issues for the handling of the "#include" preprocessor
1934 directive and the similar (but not the same) "Include" ASL operator.
1936 iASL: Add support for the new OSDT in both the disassembler and compiler.
1938 iASL: Fixed a problem with the constant folding support where a Buffer
1939 object could be incorrectly generated (incorrectly formed) during a
1940 conversion to a Store() operator.
1942 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
1943 description text for the _REV predefined name. _REV now permanently
1944 returns 2, as per the ACPI 6.0 specification.
1946 Debugger: Enhanced the output of the Debug ASL object for references
1947 produced by the Index operator. For Buffers and strings, only output the
1948 actual byte pointed to by the index. For packages, only print the single
1949 package element decoded by the index. Previously, the entire
1950 buffer/string/package was emitted.
1952 iASL/Table-compiler: Fixed a regression where the "generic" data types
1953 were no longer recognized, causing errors.
1956 ----------------------------------------
1957 15 May 2015. Summary of changes for version 20150515:
1959 This release implements most of ACPI 6.0 as described below.
1961 1) ACPICA kernel-resident subsystem:
1963 Implemented runtime argument checking and return value checking for all
1964 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
1965 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
1967 Example Code and Data Size: These are the sizes for the OS-independent
1968 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1969 debug version of the code includes the debug output trace mechanism and
1970 has a much larger code and data size.
1973 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
1974 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
1976 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
1977 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
1980 2) iASL Compiler/Disassembler and Tools:
1982 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
1983 names (argument count validation and return value typechecking.)
1985 iASL disassembler and table compiler: implemented support for all new
1986 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
1988 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
1991 iASL preprocessor: Added a new directive to enable inclusion of binary
1992 blobs into ASL code. The new directive is #includebuffer. It takes a
1993 binary file as input and emits a named ascii buffer object into the ASL
1996 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
1998 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
2001 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
2005 ----------------------------------------
2006 10 April 2015. Summary of changes for version 20150410:
2008 Reverted a change introduced in version 20150408 that caused
2009 a regression in the disassembler where incorrect operator
2010 symbols could be emitted.
2013 ----------------------------------------
2014 08 April 2015. Summary of changes for version 20150408:
2017 1) ACPICA kernel-resident subsystem:
2019 Permanently set the return value for the _REV predefined name. It now
2020 returns 2 (was 5). This matches other ACPI implementations. _REV will be
2021 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
2022 for ACPI 2.0 and later. It should never be used to differentiate or
2023 identify operating systems.
2025 Added the "Windows 2015" string to the _OSI support. ACPICA will now
2026 return TRUE to a query with this string.
2028 Fixed several issues with the local version of the printf function.
2030 Added the C99 compiler option (-std=c99) to the Unix makefiles.
2033 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
2034 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
2036 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2037 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2040 2) iASL Compiler/Disassembler and Tools:
2042 iASL: Implemented an enhancement to the constant folding feature to
2043 transform the parse tree to a simple Store operation whenever possible:
2044 Add (2, 3, X) ==> is converted to: Store (5, X)
2045 X = 2 + 3 ==> is converted to: Store (5, X)
2047 Updated support for the SLIC table (Software Licensing Description Table)
2048 in both the Data Table compiler and the disassembler. The SLIC table
2049 support now conforms to "Microsoft Software Licensing Tables (SLIC and
2050 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
2051 following the ACPI header is now defined to be "Proprietary Data", and as
2052 such, can only be entered or displayed as a hex data block.
2054 Implemented full support for the MSDM table as described in the document
2055 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
2056 following the ACPI header is defined to be "Proprietary Data", and can
2057 only be entered or displayed as a hex data block.
2059 Implemented the -Pn option for the iASL Table Compiler (was only
2060 implemented for the ASL compiler). This option disables the iASL
2063 Disassembler: For disassembly of Data Tables, added a comment field
2064 around the Ascii equivalent data that is emitted as part of the "Raw
2065 Table Data" block. This prevents the iASL Preprocessor from possible
2066 confusion if/when the table is compiled.
2068 Disassembler: Added an option (-df) to force the disassembler to assume
2069 that the table being disassembled contains valid AML. This feature is
2070 useful for disassembling AML files that contain ACPI signatures other
2071 than DSDT or SSDT (such as OEMx or other signatures).
2073 Changes for the EFI version of the tools:
2074 1) Fixed a build error/issue
2075 2) Fixed a cast warning
2077 iASL: Fixed a path issue with the __FILE__ operator by making the
2078 directory prefix optional within the internal SplitInputFilename
2081 Debugger: Removed some unused global variables.
2083 Tests: Updated the makefile for proper generation of the AAPITS suite.
2086 ----------------------------------------
2087 04 February 2015. Summary of changes for version 20150204:
2089 ACPICA kernel-resident subsystem:
2091 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2092 copyright to all module headers and signons, including the standard Linux
2093 header. This affects virtually every file in the ACPICA core subsystem,
2094 iASL compiler, all ACPICA utilities, and the test suites.
2096 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
2097 A raw gpe handling mechanism was created to allow better handling of GPE
2098 storms that aren't easily managed by the normal handler. The raw handler
2099 allows disabling/renabling of the the GPE so that interrupt storms can be
2100 avoided in cases where events cannot be timely serviced. In this
2101 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
2102 GPE. This API will leave the reference counts undisturbed, thereby
2103 preventing unintentional clearing of the GPE when the intent in only to
2104 temporarily disable it. Raw handlers allow enabling and disabling of a
2105 GPE by removing GPE register locking. As such, raw handlers much provide
2106 their own locks while using GPE API's to protect access to GPE data
2110 Events: Always modify GPE registers under the GPE lock.
2111 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
2112 values. Reported as bug by joe.liu@apple.com.
2114 Unix makefiles: Separate option to disable optimizations and
2115 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
2116 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
2117 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
2118 errors when building ACPICA. This allows disabling the option without
2119 also having to disable optimazations.
2123 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
2124 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
2127 --------------------------------------
2128 07 November 2014. Summary of changes for version 20141107:
2130 This release is available at https://acpica.org/downloads
2132 This release introduces and implements language extensions to ASL that
2133 provide support for symbolic ("C-style") operators and expressions. These
2134 language extensions are known collectively as ASL+.
2137 1) iASL Compiler/Disassembler and Tools:
2139 Disassembler: Fixed a problem with disassembly of the UartSerialBus
2140 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
2143 Disassembler: Fixed the Unicode macro support to add escape sequences.
2144 All non-printable ASCII values are emitted as escape sequences, as well
2145 as the standard escapes for quote and backslash. Ensures that the
2146 disassembled macro can be correctly recompiled.
2148 iASL: Added Printf/Fprintf macros for formatted output. These macros are
2149 translated to existing AML Concatenate and Store operations. Printf
2150 writes to the ASL Debug object. Fprintf allows the specification of an
2151 ASL name as the target. Only a single format specifier is required, %o,
2152 since the AML interpreter dynamically converts objects to the required
2155 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2156 (Concatenate (Concatenate (Concatenate ("", Arg0),
2157 ": Unexpected value for "), Arg1), ", "), Arg2),
2158 " at line "), Arg3), Debug)
2160 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
2161 Arg0, Arg1, Arg2, Arg3)
2163 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
2164 ("", Arg1), ": "), Arg0), " Successful"), STR1)
2166 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
2168 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
2169 ASL parse tree before the AML code is generated. This allows blocks of
2170 ASL code to be removed in order to help locate and identify problem
2171 devices and/or code. David E. Box.
2173 AcpiExec: Added support (-fi) for an optional namespace object
2174 initialization file. This file specifies initial values for namespace
2175 objects as necessary for debugging and testing different ASL code paths
2176 that may be taken as a result of BIOS options.
2179 2) Overview of symbolic operator support for ASL (ASL+)
2180 -------------------------------------------------------
2182 As an extension to the ASL language, iASL implements support for symbolic
2183 (C-style) operators for math and logical expressions. This can greatly
2184 simplify ASL code as well as improve both readability and
2185 maintainability. These language extensions can exist concurrently with
2186 all legacy ASL code and expressions.
2188 The symbolic extensions are 100% compatible with existing AML
2189 interpreters, since no new AML opcodes are created. To implement the
2190 extensions, the iASL compiler transforms the symbolic expressions into
2191 the legacy ASL/AML equivalents at compile time.
2193 Full symbolic expressions are supported, along with the standard C
2194 precedence and associativity rules.
2196 Full disassembler support for the symbolic expressions is provided, and
2197 creates an automatic migration path for existing ASL code to ASL+ code
2198 via the disassembly process. By default, the disassembler now emits ASL+
2199 code with symbolic expressions. An option (-dl) is provided to force the
2200 disassembler to emit legacy ASL code if desired.
2202 Below is the complete list of the currently supported symbolic operators
2203 with examples. See the iASL User Guide for additional information.
2206 ASL+ Syntax Legacy ASL Equivalent
2207 ----------- ---------------------
2211 Z = X + Y Add (X, Y, Z)
2212 Z = X - Y Subtract (X, Y, Z)
2213 Z = X * Y Multiply (X, Y, Z)
2214 Z = X / Y Divide (X, Y, , Z)
2215 Z = X % Y Mod (X, Y, Z)
2216 Z = X << Y ShiftLeft (X, Y, Z)
2217 Z = X >> Y ShiftRight (X, Y, Z)
2218 Z = X & Y And (X, Y, Z)
2219 Z = X | Y Or (X, Y, Z)
2220 Z = X ^ Y Xor (X, Y, Z)
2225 // Logical operators
2227 (X == Y) LEqual (X, Y)
2228 (X != Y) LNotEqual (X, Y)
2229 (X < Y) LLess (X, Y)
2230 (X > Y) LGreater (X, Y)
2231 (X <= Y) LLessEqual (X, Y)
2232 (X >= Y) LGreaterEqual (X, Y)
2233 (X && Y) LAnd (X, Y)
2237 // Assignment and compound assignment operations
2240 X += Y Add (X, Y, X)
2241 X -= Y Subtract (X, Y, X)
2242 X *= Y Multiply (X, Y, X)
2243 X /= Y Divide (X, Y, , X)
2244 X %= Y Mod (X, Y, X)
2245 X <<= Y ShiftLeft (X, Y, X)
2246 X >>= Y ShiftRight (X, Y, X)
2247 X &= Y And (X, Y, X)
2249 X ^= Y Xor (X, Y, X)
2256 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
2257 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
2259 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
2261 And (MEMB, 0xFFFFFFF0, SRMB)
2262 Store (MEMB, Local2)
2263 Store (PDBM, Local1)
2264 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
2266 Or (PDBM, 0x02, PDBM)
2270 If (((R510 & 0x03FB) == 0x02E0) ||
2271 ((R520 & 0x03FB) == 0x02E0) ||
2272 ((R530 & 0x03FB) == 0x02E0) ||
2273 ((R540 & 0x03FB) == 0x02E0))
2275 SRMB = (MEMB & 0xFFFFFFF0)
2278 PDBM &= 0xFFFFFFFFFFFFFFF9
2284 Store (0x1234, Local1)
2285 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
2286 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
2287 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
2288 Store (Index (PKG1, 0x03), Local6)
2289 Store (Add (Local3, Local2), Debug)
2290 Add (Local1, 0x0F, Local2)
2291 Add (Local1, Multiply (Local2, Local3), Local2)
2292 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
2296 Local3 = (((Local1 + TEST) + 0x20) * Local2)
2297 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
2298 Local3 = (Local1 + (TEST + (0x20 * Local2)))
2299 Local6 = Index (PKG1, 0x03)
2300 Debug = (Local3 + Local2)
2301 Local2 = (Local1 + 0x0F)
2302 Local2 = (Local1 + (Local2 * Local3))
2303 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
2306 ----------------------------------------
2307 26 September 2014. Summary of changes for version 20140926:
2309 1) ACPICA kernel-resident subsystem:
2311 Updated the GPIO operation region handler interface (GeneralPurposeIo).
2312 In order to support GPIO Connection objects with multiple pins, along
2313 with the related Field objects, the following changes to the interface
2314 have been made: The Address is now defined to be the offset in bits of
2315 the field unit from the previous invocation of a Connection. It can be
2316 viewed as a "Pin Number Index" into the connection resource descriptor.
2317 The BitWidth is the exact bit width of the field. It is usually one bit,
2318 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
2319 additional information and examples.
2321 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
2322 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
2323 by the firmware), so that they cannot fire until they are enabled via
2324 AcpiUpdateAllGpes. Rafael J. Wysocki.
2326 Added a new return flag for the Event/GPE status interfaces --
2327 AcpiGetEventStatus and AcpiGetGpeStatus. The new
2328 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
2329 GPE currently has a handler associated with it, and can thus actually
2330 affect the system. Lv Zheng.
2332 Example Code and Data Size: These are the sizes for the OS-independent
2333 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2334 debug version of the code includes the debug output trace mechanism and
2335 has a much larger code and data size.
2338 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
2339 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
2341 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2342 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2344 2) iASL Compiler/Disassembler and Tools:
2346 iASL: Fixed a memory allocation/free regression introduced in 20140828
2347 that could cause the compiler to crash. This was introduced inadvertently
2348 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
2351 iASL: Removed two error messages that have been found to create false
2352 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
2353 1) Illegal forward reference within a method
2354 2) Illegal reference across two methods
2356 iASL: Implemented a new option (-lm) to create a hardware mapping file
2357 that summarizes all GPIO, I2C, SPI, and UART connections. This option
2358 works for both the compiler and disassembler. See the iASL compiler user
2359 guide for additional information and examples (section 6.4.6).
2361 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
2362 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
2363 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
2365 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
2366 unless STDIN is actually a terminal. Assists with batch-mode processing.
2369 Disassembler/AcpiHelp: Added another large group of recognized _HID
2373 ----------------------------------------
2374 28 August 2014. Summary of changes for version 20140828:
2376 1) ACPICA kernel-resident subsystem:
2378 Fixed a problem related to the internal use of the Timer() operator where
2379 a 64-bit divide could cause an attempted link to a double-precision math
2380 library. This divide is not actually necessary, so the code was
2381 restructured to eliminate it. Lv Zheng.
2383 ACPI 5.1: Added support for the runtime validation of the _DSD package
2384 (similar to the iASL support).
2386 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
2387 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
2389 Example Code and Data Size: These are the sizes for the OS-independent
2390 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2391 debug version of the code includes the debug output trace mechanism and
2392 has a much larger code and data size.
2395 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
2396 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
2398 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
2399 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2401 2) iASL Compiler/Disassembler and Tools:
2403 AcpiExec: Fixed a problem on unix systems where the original terminal
2404 state was not always properly restored upon exit. Seen when using the -v
2405 option. ACPICA BZ 1104.
2407 iASL: Fixed a problem with the validation of the ranges/length within the
2408 Memory24 resource descriptor. There was a boundary condition when the
2409 range was equal to the (length -1) caused by the fact that these values
2410 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
2412 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
2414 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
2416 now supported properly.
2418 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
2419 in the disassembler, data table compiler, and table template generator.
2421 iASL: Added a requirement for Device() objects that one of either a _HID
2422 or _ADR must exist within the scope of a Device, as per the ACPI
2423 specification. Remove a similar requirement that was incorrectly in place
2424 for the _DSD object.
2426 iASL: Added error detection for illegal named references within control
2427 methods that would cause runtime failures. Now trapped as errors are: 1)
2428 References to objects within a non-parent control method. 2) Forward
2429 references (within a method) -- for control methods, AML interpreters use
2430 a one-pass parse of control methods. ACPICA BZ 1008.
2432 iASL: Added error checking for dependencies related to the _PSx power
2433 methods. ACPICA BZ 1029.
2434 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
2436 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
2439 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
2440 deploying the existing object and string caches and adding new caches for
2443 iASL: Split the huge parser source file into multiple subfiles to improve
2444 manageability. Generation now requires the M4 macro preprocessor, which
2445 is part of the Bison distribution on both unix and windows platforms.
2447 AcpiSrc: Fixed and removed all extraneous warnings generated during
2448 entire ACPICA source code scan and/or conversion.
2451 ----------------------------------------
2453 24 July 2014. Summary of changes for version 20140724:
2455 The ACPI 5.1 specification has been released and is available at:
2456 http://uefi.org/specs/access
2459 0) ACPI 5.1 support in ACPICA:
2461 ACPI 5.1 is fully supported in ACPICA as of this release.
2463 New predefined names. Support includes iASL and runtime ACPICA
2465 _CCA (Cache Coherency Attribute).
2466 _DSD (Device-Specific Data). David Box.
2468 Modifications to existing ACPI tables. Support includes headers, iASL
2469 Data Table compiler, disassembler, and the template generator.
2470 FADT - New fields and flags. Graeme Gregory.
2471 GTDT - One new subtable and new fields. Tomasz Nowicki.
2472 MADT - Two new subtables. Tomasz Nowicki.
2473 PCCT - One new subtable.
2476 New notification type for System Resource Affinity change events.
2479 1) ACPICA kernel-resident subsystem:
2481 Fixed a regression introduced in 20140627 where a fault can happen during
2482 the deletion of Alias AML namespace objects. The problem affected both
2483 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
2485 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
2486 simple mechanism to enable wake GPEs that have no associated handler or
2487 control method. Rafael Wysocki.
2489 Updated the AcpiEnableGpe interface to disallow the enable if there is no
2490 handler or control method associated with the particular GPE. This will
2491 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
2493 Updated GPE handling and dispatch by disabling the GPE before clearing
2494 the status bit for edge-triggered GPEs. Lv Zheng.
2496 Added Timer() support to the AML Debug object. The current timer value is
2497 now displayed with each invocation of (Store to) the debug object to
2498 enable simple generation of execution times for AML code (method
2499 execution for example.) ACPICA BZ 1093.
2501 Example Code and Data Size: These are the sizes for the OS-independent
2502 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2503 debug version of the code includes the debug output trace mechanism and
2504 has a much larger code and data size.
2507 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
2508 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
2510 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2511 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2514 2) iASL Compiler/Disassembler and Tools:
2516 Fixed an issue with the recently added local printf implementation,
2517 concerning width/precision specifiers that could cause incorrect output.
2518 Lv Zheng. ACPICA BZ 1094.
2520 Disassembler: Added support to detect buffers that contain UUIDs and
2521 disassemble them to an invocation of the ToUUID operator. Also emit
2522 commented descriptions of known ACPI-related UUIDs.
2524 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
2525 -u. Adds three new files.
2527 iASL: Update table compiler and disassembler for DMAR table changes that
2528 were introduced in September 2013. With assistance by David Woodhouse.
2530 ----------------------------------------
2531 27 June 2014. Summary of changes for version 20140627:
2533 1) ACPICA kernel-resident subsystem:
2535 Formatted Output: Implemented local versions of standard formatted output
2536 utilities such as printf, etc. Over time, it has been discovered that
2537 there are in fact many portability issues with printf, and the addition
2538 of this feature will fix/prevent these issues once and for all. Some
2539 known issues are summarized below:
2541 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
2542 for the Linux kernel and is %uI64 for some MSVC versions.
2543 2) Invoking printf consistently in a manner that is portable across both
2544 32-bit and 64-bit platforms is difficult at best in many situations.
2545 3) The output format for pointers varies from system to system (leading
2546 zeros especially), and leads to inconsistent output from ACPICA across
2548 4) Certain platform-specific printf formats may conflict with ACPICA use.
2549 5) If there is no local C library available, ACPICA now has local support
2552 -- To address these printf issues in a complete manner, ACPICA now
2553 directly implements a small subset of printf format specifiers, only
2554 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
2556 Implemented support for ACPICA generation within the EFI environment.
2557 Initially, the AcpiDump utility is supported in the UEFI shell
2558 environment. Lv Zheng.
2560 Added a new external interface, AcpiLogError, to improve ACPICA
2561 portability. This allows the host to redirect error messages from the
2562 ACPICA utilities. Lv Zheng.
2564 Added and deployed new OSL file I/O interfaces to improve ACPICA
2572 There are C library implementations of these functions in the new file
2573 service_layers/oslibcfs.c -- however, the functions can be implemented by
2574 the local host in any way necessary. Lv Zheng.
2576 Implemented a mechanism to disable/enable ACPI table checksum validation
2577 at runtime. This can be useful when loading tables very early during OS
2578 initialization when it may not be possible to map the entire table in
2579 order to compute the checksum. Lv Zheng.
2581 Fixed a buffer allocation issue for the Generic Serial Bus support.
2582 Originally, a fixed buffer length was used. This change allows for
2583 variable-length buffers based upon the protocol indicated by the field
2584 access attributes. Reported by Lan Tianyu. Lv Zheng.
2586 Fixed a problem where an object detached from a namespace node was not
2587 properly terminated/cleared and could cause a circular list problem if
2588 reattached. ACPICA BZ 1063. David Box.
2590 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
2592 Fixed a possible memory leak in an error return path within the function
2593 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
2595 Example Code and Data Size: These are the sizes for the OS-independent
2596 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2597 debug version of the code includes the debug output trace mechanism and
2598 has a much larger code and data size.
2601 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
2602 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
2604 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2605 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2608 2) iASL Compiler/Disassembler and Tools:
2610 Disassembler: Add dump of ASCII equivalent text within a comment at the
2611 end of each line of the output for the Buffer() ASL operator.
2613 AcpiDump: Miscellaneous changes:
2614 Fixed repetitive table dump in -n mode.
2615 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
2616 the ACPI 2.0 GUID fails.
2618 iASL: Fixed a problem where the compiler could fault if incorrectly given
2619 an acpidump output file as input. ACPICA BZ 1088. David Box.
2621 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
2622 they are invoked without any arguments.
2624 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
2625 1086. Colin Ian King.
2627 Disassembler: Cleaned up a block of code that extracts a parent Op
2628 object. Added a comment that explains that the parent is guaranteed to be
2629 valid in this case. ACPICA BZ 1069.
2632 ----------------------------------------
2633 24 April 2014. Summary of changes for version 20140424:
2635 1) ACPICA kernel-resident subsystem:
2637 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
2638 Some of these tables are known to contain a trailing NULL entry. Lv
2641 Removed an extraneous error message for the case where there are a large
2642 number of system GPEs (> 124). This was the "32-bit FADT register is too
2643 long to convert to GAS struct" message, which is irrelevant for GPEs
2644 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
2645 (limited capacity) GAS bit length. Also, several changes to ensure proper
2646 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
2649 Implemented and deployed additional configuration support for the public
2650 ACPICA external interfaces. Entire classes of interfaces can now be
2651 easily modified or configured out, replaced by stubbed inline functions
2652 by default. Lv Zheng.
2654 Moved all public ACPICA runtime configuration globals to the public
2655 ACPICA external interface file for convenience. Also, removed some
2656 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
2658 Documentation: Added a new section to the ACPICA reference describing the
2659 maximum number of GPEs that can be supported by the FADT-defined GPEs in
2660 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
2663 Example Code and Data Size: These are the sizes for the OS-independent
2664 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2665 debug version of the code includes the debug output trace mechanism and
2666 has a much larger code and data size.
2669 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
2670 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
2672 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2673 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2676 2) iASL Compiler/Disassembler and Tools:
2678 iASL and disassembler: Add full support for the LPIT table (Low Power
2679 Idle Table). Includes support in the disassembler, data table compiler,
2680 and template generator.
2683 1) Add option to force the use of the RSDT (over the XSDT).
2684 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
2686 iASL: Add check for predefined packages that are too large. For
2687 predefined names that contain subpackages, check if each subpackage is
2688 too large. (Check for too small already exists.)
2690 Debugger: Updated the GPE command (which simulates a GPE by executing the
2691 GPE code paths in ACPICA). The GPE device is now optional, and defaults
2692 to the GPE 0/1 FADT-defined blocks.
2694 Unix application OSL: Update line-editing support. Add additional error
2695 checking and take care not to reset terminal attributes on exit if they
2696 were never set. This should help guarantee that the terminal is always
2697 left in the previous state on program exit.
2700 ----------------------------------------
2701 25 March 2014. Summary of changes for version 20140325:
2703 1) ACPICA kernel-resident subsystem:
2705 Updated the auto-serialize feature for control methods. This feature
2706 automatically serializes all methods that create named objects in order
2707 to prevent runtime errors. The update adds support to ignore the
2708 currently executing AML SyncLevel when invoking such a method, in order
2709 to prevent disruption of any existing SyncLevel priorities that may exist
2710 in the AML code. Although the use of SyncLevels is relatively rare, this
2711 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
2712 appear on some machines starting with the 20140214 release.
2714 Added a new external interface to allow the host to install ACPI tables
2715 very early, before the namespace is even created. AcpiInstallTable gives
2716 the host additional flexibility for ACPI table management. Tables can be
2717 installed directly by the host as if they had originally appeared in the
2718 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
2719 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
2720 with additional internal restructuring and cleanup. See the ACPICA
2721 Reference for interface details. Lv Zheng.
2723 Added validation of the checksum for all incoming dynamically loaded
2724 tables (via external interfaces or via AML Load/LoadTable operators). Lv
2727 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
2728 and GPE handler removal. Restructured calls to eliminate possible race
2729 conditions. Lv Zheng.
2731 Added a warning for the use/execution of the ASL/AML Unload (table)
2732 operator. This will help detect and identify machines that use this
2733 operator if and when it is ever used. This operator has never been seen
2734 in the field and the usage model and possible side-effects of the drastic
2735 runtime action of a full table removal are unknown.
2737 Reverted the use of #pragma push/pop which was introduced in the 20140214
2738 release. It appears that push and pop are not implemented by enough
2739 compilers to make the use of this feature feasible for ACPICA at this
2740 time. However, these operators may be deployed in a future ACPICA
2743 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
2746 Source code generation:
2747 1) Disabled the use of the "strchr" macro for the gcc-specific
2748 generation. For some versions of gcc, this macro can periodically expose
2749 a compiler bug which in turn causes compile-time error(s).
2750 2) Added support for PPC64 compilation. Colin Ian King.
2752 Example Code and Data Size: These are the sizes for the OS-independent
2753 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2754 debug version of the code includes the debug output trace mechanism and
2755 has a much larger code and data size.
2758 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
2759 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
2761 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2762 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2765 2) iASL Compiler/Disassembler and Tools:
2767 Disassembler: Added several new features to improve the readability of
2768 the resulting ASL code. Extra information is emitted within comment
2769 fields in the ASL code:
2770 1) Known _HID/_CID values are decoded to descriptive text.
2771 2) Standard values for the Notify() operator are decoded to descriptive
2773 3) Target operands are expanded to full pathnames (in a comment) when
2776 Disassembler: Miscellaneous updates for extern() handling:
2777 1) Abort compiler if file specified by -fe option does not exist.
2778 2) Silence unnecessary warnings about argument count mismatches.
2779 3) Update warning messages concerning unresolved method externals.
2780 4) Emit "UnknownObj" keyword for externals whose type cannot be
2784 1) Added the -a option to display both the ASL syntax and the AML
2785 encoding for an input ASL operator. This effectively displays all known
2786 information about an ASL operator with one AcpiHelp invocation.
2787 2) Added substring match support (similar to a wildcard) for the -i
2788 (_HID/PNP IDs) option.
2790 iASL/Disassembler: Since this tool does not yet support execution on big-
2791 endian machines, added detection of endianness and an error message if
2792 execution is attempted on big-endian. Support for big-endian within iASL
2793 is a feature that is on the ACPICA to-be-done list.
2796 1) Remove option to extract binary files from an acpidump; this function
2797 is made obsolete by the AcpiXtract utility.
2798 2) General cleanup of open files and allocated buffers.
2801 ----------------------------------------
2802 14 February 2014. Summary of changes for version 20140214:
2804 1) ACPICA kernel-resident subsystem:
2806 Implemented a new mechanism to proactively prevent problems with ill-
2807 behaved reentrant control methods that create named ACPI objects. This
2808 behavior is illegal as per the ACPI specification, but is nonetheless
2809 frequently seen in the field. Previously, this could lead to an
2810 AE_ALREADY_EXISTS exception if the method was actually entered by more
2811 than one thread. This new mechanism detects such methods at table load
2812 time and marks them "serialized" to prevent reentrancy. A new global
2813 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
2814 feature if desired. This mechanism and global option obsoletes and
2815 supersedes the previous AcpiGbl_SerializeAllMethods option.
2817 Added the "Windows 2013" string to the _OSI support. ACPICA will now
2818 respond TRUE to _OSI queries with this string. It is the stated policy of
2819 ACPICA to add new strings to the _OSI support as soon as possible after
2820 they are defined. See the full ACPICA _OSI policy which has been added to
2821 the utilities/utosi.c file.
2823 Hardened/updated the _PRT return value auto-repair code:
2824 1) Do not abort the repair on a single subpackage failure, continue to
2825 check all subpackages.
2826 2) Add check for the minimum subpackage length (4).
2827 3) Properly handle extraneous NULL package elements.
2829 Added support to avoid the possibility of infinite loops when traversing
2830 object linked lists. Never allow an infinite loop, even in the face of
2831 corrupted object lists.
2833 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
2834 pack(pop) directives to ensure that the ACPICA headers are independent of
2835 compiler settings or other host headers.
2837 Example Code and Data Size: These are the sizes for the OS-independent
2838 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2839 debug version of the code includes the debug output trace mechanism and
2840 has a much larger code and data size.
2843 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
2844 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
2846 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2847 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2850 2) iASL Compiler/Disassembler and Tools:
2852 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
2853 first reserved field was incorrectly forced to have a value of zero. This
2854 change correctly forces the field to have a value of one. ACPICA BZ 1081.
2856 Debugger: Added missing support for the "Extra" and "Data" subobjects
2857 when displaying object data.
2859 Debugger: Added support to display entire object linked lists when
2860 displaying object data.
2862 iASL: Removed the obsolete -g option to obtain ACPI tables from the
2863 Windows registry. This feature has been superseded by the acpidump
2867 ----------------------------------------
2868 14 January 2014. Summary of changes for version 20140114:
2870 1) ACPICA kernel-resident subsystem:
2872 Updated all ACPICA copyrights and signons to 2014. Added the 2014
2873 copyright to all module headers and signons, including the standard Linux
2874 header. This affects virtually every file in the ACPICA core subsystem,
2875 iASL compiler, all ACPICA utilities, and the test suites.
2877 Improved parameter validation for AcpiInstallGpeBlock. Added the
2879 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
2880 2) There is not already a GPE block attached to the device.
2881 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
2884 Correctly support "references" in the ACPI_OBJECT. This change fixes the
2885 support to allow references (namespace nodes) to be passed as arguments
2886 to control methods via the evaluate object interface. This is probably
2887 most useful for testing purposes, however.
2889 Improved support for 32/64 bit physical addresses in printf()-like
2890 output. This change improves the support for physical addresses in printf
2891 debug statements and other output on both 32-bit and 64-bit hosts. It
2892 consistently outputs the appropriate number of bytes for each host. The
2893 %p specifier is unsatisfactory since it does not emit uniform output on
2894 all hosts/clib implementations (on some, leading zeros are not supported,
2895 leading to difficult-to-read output).
2897 Example Code and Data Size: These are the sizes for the OS-independent
2898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2899 debug version of the code includes the debug output trace mechanism and
2900 has a much larger code and data size.
2903 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
2904 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
2906 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
2907 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
2910 2) iASL Compiler/Disassembler and Tools:
2912 iASL: Fix a possible fault when using the Connection() operator. Fixes a
2913 problem if the parent Field definition for the Connection operator refers
2914 to an operation region that does not exist. ACPICA BZ 1064.
2916 AcpiExec: Load of local test tables is now optional. The utility has the
2917 capability to load some various tables to test features of ACPICA.
2918 However, there are enough of them that the output of the utility became
2919 confusing. With this change, only the required local tables are displayed
2920 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
2921 line specification. This makes the default output simler and easier to
2922 understand. The -el command line option restores the original behavior
2923 for testing purposes.
2925 AcpiExec: Added support for overlapping operation regions. This change
2926 expands the simulation of operation regions by supporting regions that
2927 overlap within the given address space. Supports SystemMemory and
2928 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
2930 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
2931 allows AcpiExec to simulate these address spaces, similar to the current
2932 support for SystemMemory and SystemIO.
2934 Debugger: Added new command to read/write/compare all namespace objects.
2935 The command "test objects" will exercise the entire namespace by writing
2936 new values to each data object, and ensuring that the write was
2937 successful. The original value is then restored and verified.
2939 Debugger: Added the "test predefined" command. This change makes this
2940 test public and puts it under the new "test" command. The test executes
2941 each and every predefined name within the current namespace.
2944 ----------------------------------------
2945 18 December 2013. Summary of changes for version 20131218:
2947 Global note: The ACPI 5.0A specification was released this month. There
2948 are no changes needed for ACPICA since this release of ACPI is an
2949 errata/clarification release. The specification is available at
2953 1) ACPICA kernel-resident subsystem:
2955 Added validation of the XSDT root table if it is present. Some older
2956 platforms contain an XSDT that is ill-formed or otherwise invalid (such
2957 as containing some or all entries that are NULL pointers). This change
2958 adds a new function to validate the XSDT before actually using it. If the
2959 XSDT is found to be invalid, ACPICA will now automatically fall back to
2960 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
2961 ACPICA and enhanced by Lv Zheng and Bob Moore.
2963 Added a runtime option to ignore the XSDT and force the use of the RSDT.
2964 This change adds a runtime option that will force ACPICA to use the RSDT
2965 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
2966 requires that an XSDT be used instead of the RSDT, the XSDT has been
2967 found to be corrupt or ill-formed on some machines. Lv Zheng.
2969 Added a runtime option to favor 32-bit FADT register addresses over the
2970 64-bit addresses. This change adds an option to favor 32-bit FADT
2971 addresses when there is a conflict between the 32-bit and 64-bit versions
2972 of the same register. The default behavior is to use the 64-bit version
2973 in accordance with the ACPI specification. This can now be overridden via
2974 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
2976 During the change above, the internal "Convert FADT" and "Verify FADT"
2977 functions have been merged to simplify the code, making it easier to
2978 understand and maintain. ACPICA BZ 933.
2980 Improve exception reporting and handling for GPE block installation.
2981 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
2982 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
2984 Added helper macros to extract bus/segment numbers from the HEST table.
2985 This change adds two macros to extract the encoded bus and segment
2986 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
2987 Betty Dall <betty.dall@hp.com>
2989 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
2990 by ACPICA. It is not a public macro, so it should have no effect on
2991 existing OSV code. Lv Zheng.
2993 Example Code and Data Size: These are the sizes for the OS-independent
2994 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2995 debug version of the code includes the debug output trace mechanism and
2996 has a much larger code and data size.
2999 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
3000 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
3002 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3003 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3006 2) iASL Compiler/Disassembler and Tools:
3008 Disassembler: Improved pathname support for emitted External()
3009 statements. This change adds full pathname support for external names
3010 that have been resolved internally by the inclusion of additional ACPI
3011 tables (via the iASL -e option). Without this change, the disassembler
3012 can emit multiple externals for the same object, or it become confused
3013 when the Scope() operator is used on an external object. Overall, greatly
3014 improves the ability to actually recompile the emitted ASL code when
3015 objects a referenced across multiple ACPI tables. Reported by Michael
3016 Tsirkin (mst@redhat.com).
3018 Tests/ASLTS: Updated functional control suite to execute with no errors.
3019 David Box. Fixed several errors related to the testing of the interpreter
3020 slack mode. Lv Zheng.
3022 iASL: Added support to detect names that are declared within a control
3023 method, but are unused (these are temporary names that are only valid
3024 during the time the method is executing). A remark is issued for these
3025 cases. ACPICA BZ 1022.
3027 iASL: Added full support for the DBG2 table. Adds full disassembler,
3028 table compiler, and template generator support for the DBG2 table (Debug
3031 iASL: Added full support for the PCCT table, update the table definition.
3032 Updates the PCCT table definition in the actbl3.h header and adds table
3033 compiler and template generator support.
3035 iASL: Added an option to emit only error messages (no warnings/remarks).
3036 The -ve option will enable only error messages, warnings and remarks are
3037 suppressed. This can simplify debugging when only the errors are
3038 important, such as when an ACPI table is disassembled and there are many
3039 warnings and remarks -- but only the actual errors are of real interest.
3041 Example ACPICA code (source/tools/examples): Updated the example code so
3042 that it builds to an actual working program, not just example code. Added
3043 ACPI tables and execution of an example control method in the DSDT. Added
3044 makefile support for Unix generation.
3047 ----------------------------------------
3048 15 November 2013. Summary of changes for version 20131115:
3050 This release is available at https://acpica.org/downloads
3053 1) ACPICA kernel-resident subsystem:
3055 Resource Manager: Fixed loop termination for the "get AML length"
3056 function. The loop previously had an error termination on a NULL resource
3057 pointer, which can never happen since the loop simply increments a valid
3058 resource pointer. This fix changes the loop to terminate with an error on
3059 an invalid end-of-buffer condition. The problem can be seen as an
3060 infinite loop by callers to AcpiSetCurrentResources with an invalid or
3061 corrupted resource descriptor, or a resource descriptor that is missing
3062 an END_TAG descriptor. Reported by Dan Carpenter
3063 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
3065 Table unload and ACPICA termination: Delete all attached data objects
3066 during namespace node deletion. This fix updates namespace node deletion
3067 to delete the entire list of attached objects (attached via
3068 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
3069 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
3071 ACPICA termination: Added support to delete all objects attached to the
3072 root namespace node. This fix deletes any and all objects that have been
3073 attached to the root node via AcpiAttachData. Previously, none of these
3074 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
3076 Debug output: Do not emit the function nesting level for the in-kernel
3077 build. The nesting level is really only useful during a single-thread
3078 execution. Therefore, only enable this output for the AcpiExec utility.
3079 Also, only emit the thread ID when executing under AcpiExec (Context
3080 switches are still always detected and a message is emitted). ACPICA BZ
3083 Example Code and Data Size: These are the sizes for the OS-independent
3084 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3085 debug version of the code includes the debug output trace mechanism and
3086 has a much larger code and data size.
3089 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
3090 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
3092 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3093 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3096 2) iASL Compiler/Disassembler and Tools:
3098 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
3099 correct portable POSIX header for terminal control functions.
3101 Disassembler: Fixed control method invocation issues related to the use
3102 of the CondRefOf() operator. The problem is seen in the disassembly where
3103 control method invocations may not be disassembled properly if the
3104 control method name has been used previously as an argument to CondRefOf.
3105 The solution is to not attempt to emit an external declaration for the
3106 CondRefOf target (it is not necessary in the first place). This prevents
3107 disassembler object type confusion. ACPICA BZ 988.
3109 Unix Makefiles: Added an option to disable compiler optimizations and the
3110 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
3111 with optimizations (reportedly, gcc 4.4 for example). This change adds a
3112 command line option for make (NOOPT) that disables all compiler
3113 optimizations and the _FORTIFY_SOURCE compiler flag. The default
3114 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
3115 1034. Lv Zheng, Bob Moore.
3117 Tests/ASLTS: Added options to specify individual test cases and modes.
3118 This allows testers running aslts.sh to optionally specify individual
3119 test modes and test cases. Also added an option to disable the forced
3120 generation of the ACPICA tools from source if desired. Lv Zheng.
3122 ----------------------------------------
3123 27 September 2013. Summary of changes for version 20130927:
3125 This release is available at https://acpica.org/downloads
3128 1) ACPICA kernel-resident subsystem:
3130 Fixed a problem with store operations to reference objects. This change
3131 fixes a problem where a Store operation to an ArgX object that contained
3133 reference to a field object did not complete the automatic dereference
3135 then write to the actual field object. Instead, the object type of the
3136 field object was inadvertently changed to match the type of the source
3137 operand. The new behavior will actually write to the field object (buffer
3138 field or field unit), thus matching the correct ACPI-defined behavior.
3140 Implemented support to allow the host to redefine individual OSL
3141 prototypes. This change enables the host to redefine OSL prototypes found
3142 in the acpiosxf.h file. This allows the host to implement OSL interfaces
3143 with a macro or inlined function. Further, it allows the host to add any
3144 additional required modifiers such as __iomem, __init, __exit, etc., as
3145 necessary on a per-interface basis. Enables maximum flexibility for the
3146 OSL interfaces. Lv Zheng.
3148 Hardcoded the access width for the FADT-defined reset register. The ACPI
3149 specification requires the reset register width to be 8 bits. ACPICA now
3150 hardcodes the width to 8 and ignores the FADT width value. This provides
3151 compatibility with other ACPI implementations that have allowed BIOS code
3152 with bad register width values to go unnoticed. Matthew Garett, Bob
3156 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
3158 in the OSL header (acpiosxf). The change modifies the position of this
3159 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
3160 build issues if the OSL defines the implementation of the interface to be
3161 an inline stub function. Lv Zheng.
3163 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
3164 initialization interfaces. This change adds a new macro for the main init
3165 and terminate external interfaces in order to support hosts that require
3166 additional or different processing for these functions. Changed from
3167 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
3170 Cleaned up the memory allocation macros for configurability. In the
3172 case, the ACPI_ALLOCATE and related macros now resolve directly to their
3173 respective AcpiOs* OSL interfaces. Two options:
3174 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
3175 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
3176 2) For AcpiExec (and for debugging), the macros can optionally be
3178 to the local ACPICA interfaces that track each allocation (local tracking
3179 is used to immediately detect memory leaks).
3182 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
3183 to predefine this macro to either TRUE or FALSE during the system build.
3185 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
3187 Example Code and Data Size: These are the sizes for the OS-independent
3188 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3189 debug version of the code includes the debug output trace mechanism and
3190 has a much larger code and data size.
3193 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
3194 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
3196 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3197 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3200 2) iASL Compiler/Disassembler and Tools:
3202 iASL: Implemented wildcard support for the -e option. This simplifies use
3203 when there are many SSDTs that must be included to resolve external
3205 declarations. ACPICA BZ 1041. Example:
3206 iasl -e ssdt*.dat -d dsdt.dat
3208 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
3209 adds a portable module that implements full history and limited line
3210 editing for Unix and Linux systems. It does not use readline() due to
3211 portability issues. Instead it uses the POSIX termio interface to put the
3212 terminal in raw input mode so that the various special keys can be
3214 (such as up/down-arrow for history support and left/right-arrow for line
3215 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
3217 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
3218 one or more spaces. This provides compatible with early or different
3219 versions of the AcpiDump utility. ACPICA BZ 1044.
3221 AcpiDump: Do not ignore tables that contain only an ACPI table header.
3222 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
3223 no other data. This change adds support to dump these tables. Any tables
3224 shorter than the length of an ACPI table header remain in error (an error
3225 message is emitted). Reported by Yi Li.
3227 Debugger: Echo actual command along with the "unknown command" message.
3229 ----------------------------------------
3230 23 August 2013. Summary of changes for version 20130823:
3232 1) ACPICA kernel-resident subsystem:
3234 Implemented support for host-installed System Control Interrupt (SCI)
3235 handlers. Certain ACPI functionality requires the host to handle raw
3236 SCIs. For example, the "SCI Doorbell" that is defined for memory power
3237 state support requires the host device driver to handle SCIs to examine
3238 if the doorbell has been activated. Multiple SCI handlers can be
3239 installed to allow for future expansion. New external interfaces are
3240 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
3241 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
3243 Operation region support: Never locally free the handler "context"
3244 pointer. This change removes some dangerous code that attempts to free
3245 the handler context pointer in some (rare) circumstances. The owner of
3246 the handler owns this pointer and the ACPICA code should never touch it.
3247 Although not seen to be an issue in any kernel, it did show up as a
3248 problem (fault) under AcpiExec. Also, set the internal storage field for
3249 the context pointer to zero when the region is deactivated, simply for
3250 sanity. David Box. ACPICA BZ 1039.
3252 AcpiRead: On error, do not modify the return value target location. If an
3253 error happens in the middle of a split 32/32 64-bit I/O operation, do not
3254 modify the target of the return value pointer. Makes the code consistent
3255 with the rest of ACPICA. Bjorn Helgaas.
3257 Example Code and Data Size: These are the sizes for the OS-independent
3258 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3259 debug version of the code includes the debug output trace mechanism and
3260 has a much larger code and data size.
3263 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
3264 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3266 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3267 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
3270 2) iASL Compiler/Disassembler and Tools:
3272 AcpiDump: Implemented several new features and fixed some problems:
3273 1) Added support to dump the RSDP, RSDT, and XSDT tables.
3274 2) Added support for multiple table instances (SSDT, UEFI).
3275 3) Added option to dump "customized" (overridden) tables (-c).
3276 4) Fixed a problem where some table filenames were improperly
3278 5) Improved some error messages, removed some unnecessary messages.
3280 iASL: Implemented additional support for disassembly of ACPI tables that
3281 contain invocations of external control methods. The -fe<file> option
3282 allows the import of a file that specifies the external methods along
3283 with the required number of arguments for each -- allowing for the
3284 correct disassembly of the table. This is a workaround for a limitation
3285 of AML code where the disassembler often cannot determine the number of
3286 arguments required for an external control method and generates incorrect
3287 ASL code. See the iASL reference for details. ACPICA BZ 1030.
3289 Debugger: Implemented a new command (paths) that displays the full
3290 pathnames (namepaths) and object types of all objects in the namespace.
3291 This is an alternative to the namespace command.
3293 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
3294 mechanism and any installed handlers.
3296 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
3297 This can occur if there are too many parent prefixes in a namepath (for
3298 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
3300 Application OSLs: Set the return value for the PCI read functions. These
3301 functions simply return AE_OK, but should set the return value to zero
3302 also. This change implements this. ACPICA BZ 1038.
3304 Debugger: Prevent possible command line buffer overflow. Increase the
3305 size of a couple of the debugger line buffers, and ensure that overflow
3306 cannot happen. ACPICA BZ 1037.
3308 iASL: Changed to abort immediately on serious errors during the parsing
3309 phase. Due to the nature of ASL, there is no point in attempting to
3310 compile these types of errors, and they typically end up causing a
3311 cascade of hundreds of errors which obscure the original problem.
3313 ----------------------------------------
3314 25 July 2013. Summary of changes for version 20130725:
3316 1) ACPICA kernel-resident subsystem:
3318 Fixed a problem with the DerefOf operator where references to FieldUnits
3319 and BufferFields incorrectly returned the parent object, not the actual
3320 value of the object. After this change, a dereference of a FieldUnit
3321 reference results in a read operation on the field to get the value, and
3322 likewise, the appropriate BufferField value is extracted from the target
3325 Fixed a problem where the _WAK method could cause a fault under these
3326 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
3327 method returned no value. The problem is rarely seen because most kernels
3328 run ACPICA in slack mode.
3330 For the DerefOf operator, a fatal error now results if an attempt is made
3331 to dereference a reference (created by the Index operator) to a NULL
3332 package element. Provides compatibility with other ACPI implementations,
3333 and this behavior will be added to a future version of the ACPI
3336 The ACPI Power Management Timer (defined in the FADT) is now optional.
3337 This provides compatibility with other ACPI implementations and will
3338 appear in the next version of the ACPI specification. If there is no PM
3339 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
3340 zero in the FADT indicates no PM timer.
3342 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
3343 allows the host to globally enable/disable all vendor strings, all
3344 feature strings, or both. Intended to be primarily used for debugging
3345 purposes only. Lv Zheng.
3347 Expose the collected _OSI data to the host via a global variable. This
3348 data tracks the highest level vendor ID that has been invoked by the BIOS
3349 so that the host (and potentially ACPICA itself) can change behaviors
3350 based upon the age of the BIOS.
3352 Example Code and Data Size: These are the sizes for the OS-independent
3353 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3354 debug version of the code includes the debug output trace mechanism and
3355 has a much larger code and data size.
3358 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
3359 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
3361 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3362 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3365 2) iASL Compiler/Disassembler and Tools:
3367 iASL: Created the following enhancements for the -so option (create
3369 1)Add offsets for the last nameseg in each namepath for every supported
3371 2)Add support for Processor, Device, Thermal Zone, and Scope objects
3372 3)Add the actual AML opcode for the parent object of every supported
3374 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
3376 Disassembler: Emit all unresolved external symbols in a single block.
3377 These are external references to control methods that could not be
3378 resolved, and thus, the disassembler had to make a guess at the number of
3381 iASL: The argument to the -T option (create table template) is now
3382 optional. If not specified, the default table is a DSDT, typically the
3385 ----------------------------------------
3386 26 June 2013. Summary of changes for version 20130626:
3388 1) ACPICA kernel-resident subsystem:
3390 Fixed an issue with runtime repair of the _CST object. Null or invalid
3391 elements were not always removed properly. Lv Zheng.
3393 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
3394 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
3395 the maximum number of GPEs is 1016. Use of multiple GPE block devices
3396 makes the system-wide number of GPEs essentially unlimited.
3398 Example Code and Data Size: These are the sizes for the OS-independent
3399 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3400 debug version of the code includes the debug output trace mechanism and
3401 has a much larger code and data size.
3404 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
3405 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
3407 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3408 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3411 2) iASL Compiler/Disassembler and Tools:
3413 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
3414 hosts. Now supports Linux, FreeBSD, and Windows.
3416 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
3417 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
3419 iASL/Preprocessor: Implemented full support for nested
3420 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
3422 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
3423 max. The original purpose of this constraint was to limit the amount of
3424 debug output. However, the string function in question (UtPrintString) is
3425 now used for the disassembler also, where 256 bytes is insufficient.
3426 Reported by RehabMan@GitHub.
3428 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
3429 tables. ACPICA BZ 999. Lv Zheng.
3431 iASL: Fixed a couple of error exit issues that could result in a "Could
3432 not delete <file>" message during ASL compilation.
3434 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
3435 the actual signatures for these tables are "FACP" and "APIC",
3438 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
3439 tables are allowed to have multiple instances.
3441 ----------------------------------------
3442 17 May 2013. Summary of changes for version 20130517:
3444 1) ACPICA kernel-resident subsystem:
3446 Fixed a regression introduced in version 20130328 for _INI methods. This
3447 change fixes a problem introduced in 20130328 where _INI methods are no
3448 longer executed properly because of a memory block that was not
3449 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
3450 <tomasz.nowicki@linaro.org>.
3452 Fixed a possible problem with the new extended sleep registers in the
3454 5.0 FADT. Do not use these registers (even if populated) unless the HW-
3455 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
3458 Implemented return value repair code for _CST predefined objects: Sort
3460 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
3462 Implemented a debug-only option to disable loading of SSDTs from the
3463 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
3464 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
3465 acglobal.h - ACPICA BZ 1005. Lv Zheng.
3467 Fixed some issues in the ACPICA initialization and termination code:
3468 Tomasz Nowicki <tomasz.nowicki@linaro.org>
3469 1) Clear events initialized flag upon event component termination. ACPICA
3471 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
3472 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
3473 4) Clear debug buffer global on termination to prevent possible multiple
3474 delete. ACPICA BZ 1010.
3476 Standardized all switch() blocks across the entire source base. After
3478 years, different formatting for switch() had crept in. This change makes
3479 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
3481 Split some files to enhance ACPICA modularity and configurability:
3482 1) Split buffer dump routines into utilities/utbuffer.c
3483 2) Split internal error message routines into utilities/uterror.c
3484 3) Split table print utilities into tables/tbprint.c
3485 4) Split iASL command-line option processing into asloptions.c
3487 Makefile enhancements:
3488 1) Support for all new files above.
3489 2) Abort make on errors from any subcomponent. Chao Guan.
3490 3) Add build support for Apple Mac OS X. Liang Qi.
3492 Example Code and Data Size: These are the sizes for the OS-independent
3493 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3494 debug version of the code includes the debug output trace mechanism and
3495 has a much larger code and data size.
3498 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
3499 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
3501 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3502 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3505 2) iASL Compiler/Disassembler and Tools:
3507 New utility: Implemented an easily portable version of the acpidump
3508 utility to extract ACPI tables from the system (or a file) in an ASCII
3510 dump format. The top-level code implements the various command line
3511 options, file I/O, and table dump routines. To port to a new host, only
3512 three functions need to be implemented to get tables -- since this
3513 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
3514 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
3515 1) The Windows version obtains the ACPI tables from the Registry.
3516 2) The Linux version is under development.
3517 3) Other hosts - If an OS-dependent module is submitted, it will be
3518 distributed with ACPICA.
3520 iASL: Fixed a regression for -D preprocessor option (define symbol). A
3521 restructuring/change to the initialization sequence caused this option to
3522 no longer work properly.
3524 iASL: Implemented a mechanism to disable specific warnings and remarks.
3525 Adds a new command line option, "-vw <messageid> as well as "#pragma
3526 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
3528 iASL: Fix for too-strict package object validation. The package object
3529 validation for return values from the predefined names is a bit too
3530 strict, it does not allow names references within the package (which will
3531 be resolved at runtime.) These types of references cannot be validated at
3532 compile time. This change ignores named references within package objects
3533 for names that return or define static packages.
3535 Debugger: Fixed the 80-character command line limitation for the History
3536 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
3538 iASL: Added control method and package support for the -so option
3539 (generates AML offset table for BIOS support.)
3541 iASL: issue a remark if a non-serialized method creates named objects. If
3542 a thread blocks within the method for any reason, and another thread
3543 enters the method, the method will fail because an attempt will be made
3545 create the same (named) object twice. In this case, issue a remark that
3546 the method should be marked serialized. NOTE: may become a warning later.
3549 ----------------------------------------
3550 18 April 2013. Summary of changes for version 20130418:
3552 1) ACPICA kernel-resident subsystem:
3554 Fixed a possible buffer overrun during some rare but specific field unit
3555 read operations. This overrun can only happen if the DSDT version is 1 --
3556 meaning that all AML integers are 32 bits -- and the field length is
3557 between 33 and 55 bits long. During the read, an internal buffer object
3559 created for the field unit because the field is larger than an integer
3561 bits). However, in this case, the buffer will be incorrectly written
3562 beyond the end because the buffer length is less than the internal
3564 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
3565 long, but a full 8 bytes will be written.
3567 Updated the Embedded Controller "orphan" _REG method support. This refers
3568 to _REG methods under the EC device that have no corresponding operation
3569 region. This is allowed by the ACPI specification. This update removes a
3570 dependency on the existence an ECDT table. It will execute an orphan _REG
3571 method as long as the operation region handler for the EC is installed at
3572 the EC device node and not the namespace root. Rui Zhang (original
3573 update), Bob Moore (update/integrate).
3575 Implemented run-time argument typechecking for all predefined ACPI names
3576 (_STA, _BIF, etc.) This change performs object typechecking on all
3577 incoming arguments for all predefined names executed via
3578 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
3579 passing correct object types as well as the correct number of arguments
3580 (therefore identifying any issues immediately). Also, the ASL/namespace
3581 definition of the predefined name is checked against the ACPI
3582 specification for the proper argument count. Adds one new file,
3585 Changed an exception code for the ASL UnLoad() operator. Changed the
3586 exception code for the case where the input DdbHandle is invalid, from
3587 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
3589 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
3590 global makefile. The use of this flag causes compiler errors on earlier
3591 versions of GCC, so it has been removed for compatibility.
3593 Miscellaneous cleanup:
3594 1) Removed some unused/obsolete macros
3595 2) Fixed a possible memory leak in the _OSI support
3596 3) Removed an unused variable in the predefined name support
3597 4) Windows OSL: remove obsolete reference to a memory list field
3599 Example Code and Data Size: These are the sizes for the OS-independent
3600 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3601 debug version of the code includes the debug output trace mechanism and
3602 has a much larger code and data size.
3605 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3606 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3608 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
3609 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
3612 2) iASL Compiler/Disassembler and Tools:
3614 AcpiExec: Added installation of a handler for the SystemCMOS address
3615 space. This prevents control method abort if a method accesses this
3618 AcpiExec: Added support for multiple EC devices, and now install EC
3619 operation region handler(s) at the actual EC device instead of the
3620 namespace root. This reflects the typical behavior of host operating
3623 AcpiExec: Updated to ensure that all operation region handlers are
3624 installed before the _REG methods are executed. This prevents a _REG
3625 method from aborting if it accesses an address space has no handler.
3626 AcpiExec installs a handler for every possible address space.
3628 Debugger: Enhanced the "handlers" command to display non-root handlers.
3629 This change enhances the handlers command to display handlers associated
3630 with individual devices throughout the namespace, in addition to the
3631 currently supported display of handlers associated with the root
3635 ASL Test Suite: Several test suite errors have been identified and
3636 resolved, reducing the total error count during execution. Chao Guan.
3638 ----------------------------------------
3639 28 March 2013. Summary of changes for version 20130328:
3641 1) ACPICA kernel-resident subsystem:
3643 Fixed several possible race conditions with the internal object reference
3644 counting mechanism. Some of the external ACPICA interfaces update object
3645 reference counts without holding the interpreter or namespace lock. This
3646 change adds a spinlock to protect reference count updates on the internal
3647 ACPICA objects. Reported by and with assistance from Andriy Gapon
3650 FADT support: Removed an extraneous warning for very large GPE register
3651 sets. This change removes a size mismatch warning if the legacy length
3652 field for a GPE register set is larger than the 64-bit GAS structure can
3653 accommodate. GPE register sets can be larger than the 255-bit width
3654 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
3656 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
3657 return from this interface. Handles a possible timeout case if
3658 ACPI_WAIT_FOREVER is modified by the host to be a value less than
3659 "forever". Jung-uk Kim.
3661 Predefined name support: Add allowed/required argument type information
3663 the master predefined info table. This change adds the infrastructure to
3664 enable typechecking on incoming arguments for all predefined
3665 methods/objects. It does not actually contain the code that will fully
3666 utilize this information, this is still under development. Also condenses
3667 some duplicate code for the predefined names into a new module,
3668 utilities/utpredef.c
3670 Example Code and Data Size: These are the sizes for the OS-independent
3671 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3672 debug version of the code includes the debug output trace mechanism and
3673 has a much larger code and data size.
3676 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3677 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3679 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
3680 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
3683 2) iASL Compiler/Disassembler and Tools:
3685 iASL: Implemented a new option to simplify the development of ACPI-
3687 BIOS code. Adds support for a new "offset table" output file. The -so
3688 option will create a C table containing the AML table offsets of various
3689 named objects in the namespace so that BIOS code can modify them easily
3691 boot time. This can simplify BIOS runtime code by eliminating expensive
3692 searches for "magic values", enhancing boot times and adding greater
3693 reliability. With assistance from Lee Hamel.
3695 iASL: Allow additional predefined names to return zero-length packages.
3696 Now, all predefined names that are defined by the ACPI specification to
3697 return a "variable-length package of packages" are allowed to return a
3698 zero length top-level package. This allows the BIOS to tell the host that
3699 the requested feature is not supported, and supports existing BIOS/ASL
3702 iASL: Changed the "result not used" warning to an error. This is the case
3703 where an ASL operator is effectively a NOOP because the result of the
3704 operation is not stored anywhere. For example:
3706 There is no target (missing 3rd argument), nor is the function return
3707 value used. This is potentially a very serious problem -- since the code
3708 was probably intended to do something, but for whatever reason, the value
3709 was not stored. Therefore, this issue has been upgraded from a warning to
3712 AcpiHelp: Added allowable/required argument types to the predefined names
3713 info display. This feature utilizes the recent update to the predefined
3714 names table (above).
3716 ----------------------------------------
3717 14 February 2013. Summary of changes for version 20130214:
3719 1) ACPICA Kernel-resident Subsystem:
3721 Fixed a possible regression on some hosts: Reinstated the safe return
3722 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
3723 evaluated only once. Although these macros are not needed for the ACPICA
3724 code itself, they are often used by ACPI-related host device drivers
3726 the safe feature may be necessary.
3728 Fixed several issues related to the ACPI 5.0 reduced hardware support
3729 (SOC): Now ensure that if the platform declares itself as hardware-
3731 via the FADT, the following functions become NOOPs (and always return
3732 AE_OK) because ACPI is always enabled by definition on these machines:
3738 Dynamic Object Repair: Implemented additional runtime repairs for
3739 predefined name return values. Both of these repairs can simplify code in
3740 the related device drivers that invoke these methods:
3741 1) For the _STR and _MLS names, automatically repair/convert an ASCII
3742 string to a Unicode buffer.
3743 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
3745 lone end tag descriptor in the following cases: A Return(0) was executed,
3746 a null buffer was returned, or no object at all was returned (non-slack
3747 mode only). Adds a new file, nsconvert.c
3748 ACPICA BZ 998. Bob Moore, Lv Zheng.
3750 Resource Manager: Added additional code to prevent possible infinite
3752 while traversing corrupted or ill-formed resource template buffers. Check
3753 for zero-length resource descriptors in all code that loops through
3754 resource templates (the length field is used to index through the
3755 template). This change also hardens the external AcpiWalkResources and
3756 AcpiWalkResourceBuffer interfaces.
3758 Local Cache Manager: Enhanced the main data structure to eliminate an
3759 unnecessary mechanism to access the next object in the list. Actually
3760 provides a small performance enhancement for hosts that use the local
3761 ACPICA cache manager. Jung-uk Kim.
3763 Example Code and Data Size: These are the sizes for the OS-independent
3764 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3765 debug version of the code includes the debug output trace mechanism and
3766 has a much larger code and data size.
3769 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3770 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3772 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
3773 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
3776 2) iASL Compiler/Disassembler and Tools:
3778 iASL/Disassembler: Fixed several issues with the definition of the ACPI
3779 5.0 RASF table (RAS Feature Table). This change incorporates late changes
3780 that were made to the ACPI 5.0 specification.
3782 iASL/Disassembler: Added full support for the following new ACPI tables:
3783 1) The MTMR table (MID Timer Table)
3784 2) The VRTC table (Virtual Real Time Clock Table).
3785 Includes header file, disassembler, table compiler, and template support
3788 iASL: Implemented compile-time validation of package objects returned by
3789 predefined names. This new feature validates static package objects
3790 returned by the various predefined names defined to return packages. Both
3791 object types and package lengths are validated, for both parent packages
3792 and sub-packages, if any. The code is similar in structure and behavior
3794 the runtime repair mechanism within the AML interpreter and uses the
3795 existing predefined name information table. Adds a new file, aslprepkg.c.
3798 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
3799 This feature detects a binary file with a valid ACPI table header and
3800 invokes the disassembler automatically. Eliminates the need to
3801 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
3803 iASL/Disassembler: Added several warnings for the case where there are
3804 unresolved control methods during the disassembly. This can potentially
3805 cause errors when the output file is compiled, because the disassembler
3806 assumes zero method arguments in these cases (it cannot determine the
3807 actual number of arguments without resolution/definition of the method).
3809 Debugger: Added support to display all resources with a single command.
3810 Invocation of the resources command with no arguments will now display
3812 resources within the current namespace.
3814 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
3817 ----------------------------------------
3818 17 January 2013. Summary of changes for version 20130117:
3820 1) ACPICA Kernel-resident Subsystem:
3822 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
3823 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
3824 objects to return a package containing one integer, most BIOS code
3826 two integers and the previous code reflects that. However, we also need
3828 support BIOS code that actually implements to the ACPI spec, and this
3829 change reflects this.
3831 Fixed two issues with the ACPI_DEBUG_PRINT macros:
3832 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
3833 C compilers that require this support.
3834 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
3835 ACPI_DEBUG is already used by many of the various hosts.
3837 Updated all ACPICA copyrights and signons to 2013. Added the 2013
3838 copyright to all module headers and signons, including the standard Linux
3839 header. This affects virtually every file in the ACPICA core subsystem,
3840 iASL compiler, all ACPICA utilities, and the test suites.
3842 Example Code and Data Size: These are the sizes for the OS-independent
3843 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3844 debug version of the code includes the debug output trace mechanism and
3845 has a much larger code and data size.
3848 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3849 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3851 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
3852 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
3855 2) iASL Compiler/Disassembler and Tools:
3857 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
3858 prevent a possible fault on some hosts. Some C libraries modify the arg
3859 pointer parameter to vfprintf making it difficult to call it twice in the
3860 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
3861 does not affect the Windows OSL since the Win C library does not modify
3862 the arg pointer. Chao Guan, Bob Moore.
3864 iASL: Fixed a possible infinite loop when the maximum error count is
3865 reached. If an output file other than the .AML file is specified (such as
3866 a listing file), and the maximum number of errors is reached, do not
3867 attempt to flush data to the output file(s) as the compiler is aborting.
3868 This can cause an infinite loop as the max error count code essentially
3869 keeps calling itself.
3871 iASL/Disassembler: Added an option (-in) to ignore NOOP
3873 Implemented for both the compiler and the disassembler. Often, the NOOP
3874 opcode is used as padding for packages that are changed dynamically by
3876 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
3877 errors. This option causes the disassembler to ignore all NOOP opcodes
3878 (0xA3), and it also causes the compiler to ignore all ASL source code
3882 Debugger: Enhanced the Sleep command to execute all sleep states. This
3883 change allows Sleep to be invoked with no arguments and causes the
3884 debugger to execute all of the sleep states, 0-5, automatically.
3886 ----------------------------------------
3887 20 December 2012. Summary of changes for version 20121220:
3889 1) ACPICA Kernel-resident Subsystem:
3891 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
3892 alternate entry point for AcpiWalkResources and improves the usability of
3893 the resource manager by accepting as input a buffer containing the output
3894 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
3895 input buffer is not deleted by this interface so that it can be used by
3896 the host later. See the ACPICA reference for details.
3898 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
3899 (DSDT version < 2). The constant will be truncated and this warning
3900 reflects that behavior.
3902 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
3903 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
3904 both get and set the new wake bit in these descriptors, separately from
3905 the existing share bit. Reported by Aaron Lu.
3907 Interpreter: Fix Store() when an implicit conversion is not possible. For
3908 example, in the cases such as a store of a string to an existing package
3909 object, implement the store as a CopyObject(). This is a small departure
3910 from the ACPI specification which states that the control method should
3912 aborted in this case. However, the ASLTS suite depends on this behavior.
3914 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
3915 macros: check if debug output is currently enabled as soon as possible to
3916 minimize performance impact if debug is in fact not enabled.
3918 Source code restructuring: Cleanup to improve modularity. The following
3919 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
3920 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
3921 Associated makefiles and project files have been updated.
3923 Changed an exception code for LoadTable operator. For the case where one
3924 of the input strings is too long, change the returned exception code from
3925 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
3927 Fixed a possible memory leak in dispatcher error path. On error, delete
3928 the mutex object created during method mutex creation. Reported by
3929 tim.gardner@canonical.com.
3931 Example Code and Data Size: These are the sizes for the OS-independent
3932 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3933 debug version of the code includes the debug output trace mechanism and
3934 has a much larger code and data size.
3937 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
3938 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
3940 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
3941 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
3944 2) iASL Compiler/Disassembler and Tools:
3946 iASL: Disallow a method call as argument to the ObjectType ASL operator.
3947 This change tracks an errata to the ACPI 5.0 document. The AML grammar
3948 will not allow the interpreter to differentiate between a method and a
3949 method invocation when these are used as an argument to the ObjectType
3950 operator. The ACPI specification change is to disallow a method
3952 (UserTerm) for the ObjectType operator.
3954 Finish support for the TPM2 and CSRT tables in the headers, table
3955 compiler, and disassembler.
3957 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
3958 always expires immediately if the semaphore is not available. The
3960 code was using a relative-time timeout, but sem_timedwait requires the
3962 of an absolute time.
3964 iASL: Added a remark if the Timer() operator is used within a 32-bit
3965 table. This operator returns a 64-bit time value that will be truncated
3966 within a 32-bit table.
3968 iASL Source code restructuring: Cleanup to improve modularity. The
3969 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
3970 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
3974 ----------------------------------------
3975 14 November 2012. Summary of changes for version 20121114:
3977 1) ACPICA Kernel-resident Subsystem:
3979 Implemented a performance enhancement for ACPI/AML Package objects. This
3980 change greatly increases the performance of Package objects within the
3981 interpreter. It changes the processing of reference counts for packages
3983 optimizing for the most common case where the package sub-objects are
3984 either Integers, Strings, or Buffers. Increases the overall performance
3986 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
3988 Chao Guan. ACPICA BZ 943.
3990 Implemented and deployed common macros to extract flag bits from resource
3991 descriptors. Improves readability and maintainability of the code. Fixes
3993 problem with the UART serial bus descriptor for the number of data bits
3994 flags (was incorrectly 2 bits, should be 3).
3996 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
3997 of the macros and changed the SETx macros to the style of (destination,
3998 source). Also added ACPI_CASTx companion macros. Lv Zheng.
4000 Example Code and Data Size: These are the sizes for the OS-independent
4001 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4002 debug version of the code includes the debug output trace mechanism and
4003 has a much larger code and data size.
4006 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4007 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4009 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
4010 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4013 2) iASL Compiler/Disassembler and Tools:
4015 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
4016 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
4017 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
4019 Disassembler: Fixed a problem with external declaration generation. Fixes
4020 a problem where an incorrect pathname could be generated for an external
4021 declaration if the original reference to the object includes leading
4022 carats (^). ACPICA BZ 984.
4024 Debugger: Completed a major update for the Disassemble<method> command.
4025 This command was out-of-date and did not properly disassemble control
4026 methods that had any reasonable complexity. This fix brings the command
4028 to the same level as the rest of the disassembler. Adds one new file,
4029 dmdeferred.c, which is existing code that is now common with the main
4030 disassembler and the debugger disassemble command. ACPICA MZ 978.
4032 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
4033 Newer versions of Bison emit this prototype, so moved the prototype out
4035 the iASL header to where it is actually used in order to avoid a
4039 iASL/Tools: Standardized use of the stream I/O functions:
4040 1) Ensure check for I/O error after every fopen/fread/fwrite
4041 2) Ensure proper order of size/count arguments for fread/fwrite
4042 3) Use test of (Actual != Requested) after all fwrite, and most fread
4043 4) Standardize I/O error messages
4044 Improves reliability and maintainability of the code. Bob Moore, Lv
4048 Disassembler: Prevent duplicate External() statements. During generation
4049 of external statements, detect similar pathnames that are actually
4050 duplicates such as these:
4053 Remove all leading '\' characters from pathnames during the external
4054 statement generation so that duplicates will be detected and tossed.
4057 Tools: Replace low-level I/O with stream I/O functions. Replace
4058 open/read/write/close with the stream I/O equivalents
4059 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
4062 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
4063 name header so that AcpiXtract recognizes the output file/table.
4065 iASL: Remove obsolete -2 option flag. Originally intended to force the
4066 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
4067 and the entire concept is now obsolete.
4069 ----------------------------------------
4070 18 October 2012. Summary of changes for version 20121018:
4073 1) ACPICA Kernel-resident Subsystem:
4075 Updated support for the ACPI 5.0 MPST table. Fixes some problems
4076 introduced by late changes to the table as it was added to the ACPI 5.0
4077 specification. Includes header, disassembler, and data table compiler
4078 support as well as a new version of the MPST template.
4080 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
4081 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
4082 methods: _HID, _CID, and _UID.
4084 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
4085 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
4086 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
4087 names for their various drivers. Affects the AcpiGetObjectInfo external
4088 interface, and other internal interfaces as well.
4090 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
4091 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
4092 on machines that support non-aligned transfers. Optimizes for this case
4093 rather than using a strncpy. With assistance from Zheng Lv.
4095 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
4096 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
4098 Added a new debug print message for AML mutex objects that are force-
4099 released. At control method termination, any currently acquired mutex
4100 objects are force-released. Adds a new debug-only message for each one
4103 Audited/updated all ACPICA return macros and the function debug depth
4104 counter: 1) Ensure that all functions that use the various TRACE macros
4105 also use the appropriate ACPICA return macros. 2) Ensure that all normal
4106 return statements surround the return expression (value) with parens to
4107 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
4108 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
4110 Global source code changes/maintenance: All extra lines at the start and
4111 end of each source file have been removed for consistency. Also, within
4112 comments, all new sentences start with a single space instead of a double
4113 space, again for consistency across the code base.
4115 Example Code and Data Size: These are the sizes for the OS-independent
4116 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4117 debug version of the code includes the debug output trace mechanism and
4118 has a much larger code and data size.
4121 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4122 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4124 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
4125 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
4128 2) iASL Compiler/Disassembler and Tools:
4130 AcpiExec: Improved the algorithm used for memory leak/corruption
4131 detection. Added some intelligence to the code that maintains the global
4132 list of allocated memory. The list is now ordered by allocated memory
4133 address, significantly improving performance. When running AcpiExec on
4134 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
4135 on the platform and/or the environment. Note, this performance
4136 enhancement affects the AcpiExec utility only, not the kernel-resident
4139 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
4140 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
4141 incorrect table offset reported for invalid opcodes. Report the original
4142 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
4144 Disassembler: Enhanced the -vt option to emit the binary table data in
4145 hex format to assist with debugging.
4147 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
4148 size of file structure. Colin Ian King.
4150 ----------------------------------------
4151 13 September 2012. Summary of changes for version 20120913:
4154 1) ACPICA Kernel-resident Subsystem:
4156 ACPI 5.0: Added two new notify types for the Hardware Error Notification
4157 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
4161 Table Manager: Merged/removed duplicate code in the root table resize
4162 functions. One function is external, the other is internal. Lv Zheng,
4166 Makefiles: Completely removed the obsolete "Linux" makefiles under
4167 acpica/generate/linux. These makefiles are obsolete and have been
4170 the generic unix makefiles under acpica/generate/unix.
4172 Makefiles: Ensure that binary files always copied properly. Minor rule
4174 to ensure that the final binary output files are always copied up to the
4175 appropriate binary directory (bin32 or bin64.)
4177 Example Code and Data Size: These are the sizes for the OS-independent
4178 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4180 version of the code includes the debug output trace mechanism and has a
4182 larger code and data size.
4185 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4186 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4188 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
4189 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
4192 2) iASL Compiler/Disassembler and Tools:
4194 Disassembler: Fixed a possible fault during the disassembly of resource
4195 descriptors when a second parse is required because of the invocation of
4196 external control methods within the table. With assistance from
4197 adq@lidskialf.net. ACPICA BZ 976.
4199 iASL: Fixed a namepath optimization problem. An error can occur if the
4201 node that contains the namepath to be optimized does not have a parent
4203 that is a named object. This change fixes the problem.
4205 iASL: Fixed a regression where the AML file is not deleted on errors. The
4207 output file should be deleted if there are any errors during the
4210 only exception is if the -f (force output) option is used. ACPICA BZ 974.
4212 iASL: Added a feature to automatically increase internal line buffer
4214 Via realloc(), automatically increase the internal line buffer sizes as
4215 necessary to support very long source code lines. The current version of
4217 preprocessor requires a buffer long enough to contain full source code
4219 This change increases the line buffer(s) if the input lines go beyond the
4220 current buffer size. This eliminates errors that occurred when a source
4222 line was longer than the buffer.
4224 iASL: Fixed a problem with constant folding in method declarations. The
4225 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
4227 Type3 opcode was used.
4229 Debugger: Improved command help support. For incorrect argument count,
4231 full help for the command. For help command itself, allow an argument to
4234 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
4235 errors during execution of the suite. Guan Chao.
4237 ----------------------------------------
4238 16 August 2012. Summary of changes for version 20120816:
4241 1) ACPICA Kernel-resident Subsystem:
4243 Removed all use of the deprecated _GTS and _BFS predefined methods. The
4245 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
4246 deprecated and will probably be removed from the ACPI specification.
4248 does not invoke them, and reportedly never will. The final nail in the
4250 is that the ACPI specification states that these methods must be run with
4251 interrupts off, which is not going to happen in a kernel interpreter.
4253 Linux has removed all use of the methods also. It was discovered that
4254 invoking these functions caused failures on some machines, probably
4256 they were never tested since Windows does not call them. Affects two
4258 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
4261 Implemented support for complex bit-packed buffers returned from the _PLD
4262 (Physical Location of Device) predefined method. Adds a new external
4263 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
4265 structure. Note: C Bitfields cannot be used for this type of predefined
4266 structure since the memory layout of individual bitfields is not defined
4268 the C language. In addition, there are endian concerns where a compiler
4270 change the bitfield ordering based on the machine type. The new ACPICA
4271 interface eliminates these issues, and should be called after _PLD is
4272 executed. ACPICA BZ 954.
4274 Implemented a change to allow a scope change to root (via "Scope (\)")
4276 execution of module-level ASL code (code that is executed at table load
4279 Added the Windows8/Server2012 string for the _OSI method. This change
4282 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
4285 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
4287 and CSRT (Core System Resource Table).
4289 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
4290 names. This simplifies access to the buffers returned by these predefined
4291 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
4293 GPE support: Removed an extraneous parameter from the various low-level
4294 internal GPE functions. Tang Feng.
4296 Removed the linux makefiles from the unix packages. The generate/linux
4297 makefiles are obsolete and have been removed from the unix tarball
4299 packages. The replacement makefiles are under generate/unix, and there is
4301 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
4303 Updates for Unix makefiles:
4304 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
4305 2) Update linker flags (move to end of command line) for AcpiExec
4309 Split ACPICA initialization functions to new file, utxfinit.c. Split from
4310 utxface.c to improve modularity and reduce file size.
4312 Example Code and Data Size: These are the sizes for the OS-independent
4313 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4314 debug version of the code includes the debug output trace mechanism and
4316 much larger code and data size.
4319 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4320 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4322 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
4323 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
4326 2) iASL Compiler/Disassembler and Tools:
4328 iASL: Fixed a problem with constant folding for fixed-length constant
4329 expressions. The constant-folding code was not being invoked for constant
4330 expressions that allow the use of type 3/4/5 opcodes to generate
4332 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
4334 in the generation of invalid AML bytecode. ACPICA BZ 970.
4336 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
4337 apparently automatically emit some of the necessary externals. This
4339 handles these versions in order to eliminate generation warnings.
4341 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
4343 Disassembler: Add support to decode _PLD buffers. The decoded buffer
4345 within comments in the output file.
4347 Debugger: Fixed a regression with the "Threads" command where
4348 AE_BAD_PARAMETER was always returned.
4350 ----------------------------------------
4351 11 July 2012. Summary of changes for version 20120711:
4353 1) ACPICA Kernel-resident Subsystem:
4355 Fixed a possible fault in the return package object repair code. Fixes a
4356 problem that can occur when a lone package object is wrapped with an
4358 package object in order to force conformance to the ACPI specification.
4360 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
4364 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
4365 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
4366 ARB_DIS bit must be implemented in the host-dependent C3 processor power
4368 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
4370 Intel and other vendors. (for Intel: ICH4-M and earlier)
4372 This change removes the code to disable/enable bus master arbitration
4374 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
4376 resume problems on some machines. The change has been in use for over
4380 Implemented two new external interfaces to support host-directed dynamic
4382 table load and unload. They are intended to simplify the host
4384 of hot-plug support:
4385 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
4386 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
4388 See the ACPICA reference for additional details. Adds one new file,
4389 components/tables/tbxfload.c
4391 Implemented and deployed two new interfaces for errors and warnings that
4393 known to be caused by BIOS/firmware issues:
4394 AcpiBiosError: Prints "ACPI Firmware Error" message.
4395 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
4396 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
4398 and FADT errors. Additional deployment to be completed as appropriate in
4400 future. The associated conditional macros are ACPI_BIOS_ERROR and
4401 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
4406 Implicit notify support: ensure that no memory allocation occurs within a
4407 critical region. This fix moves a memory allocation outside of the time
4409 spinlock is held. Fixes issues on systems that do not allow this
4413 Split exception code utilities and tables into a new file,
4416 Example Code and Data Size: These are the sizes for the OS-independent
4417 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4419 version of the code includes the debug output trace mechanism and has a
4421 larger code and data size.
4424 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4425 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4427 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
4428 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
4431 2) iASL Compiler/Disassembler and Tools:
4433 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
4437 Debugger: Enhanced the "tables" command to emit additional information
4439 the current set of ACPI tables, including the owner ID and flags decode.
4441 Debugger: Reimplemented the "unload" command to use the new
4442 AcpiUnloadParentTable external interface. This command was disable
4444 due to need for an unload interface.
4446 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
4448 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
4450 ----------------------------------------
4451 20 June 2012. Summary of changes for version 20120620:
4454 1) ACPICA Kernel-resident Subsystem:
4456 Implemented support to expand the "implicit notify" feature to allow
4458 devices to be notified by a single GPE. This feature automatically
4460 runtime device notification in the absence of a BIOS-provided GPE control
4461 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
4463 provided by ACPICA for Windows compatibility, and is a workaround for
4466 code errors. See the description of the AcpiSetupGpeForWake interface in
4468 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
4470 Changed some comments and internal function names to simplify and ensure
4471 correctness of the Linux code translation. No functional changes.
4473 Example Code and Data Size: These are the sizes for the OS-independent
4474 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4476 version of the code includes the debug output trace mechanism and has a
4478 larger code and data size.
4481 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4482 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4484 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
4485 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
4488 2) iASL Compiler/Disassembler and Tools:
4490 Disassembler: Added support to emit short, commented descriptions for the
4492 predefined names in order to improve the readability of the disassembled
4493 output. ACPICA BZ 959. Changes include:
4494 1) Emit descriptions for all standard predefined names (_INI, _STA,
4497 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
4498 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
4501 AcpiSrc: Fixed several long-standing Linux code translation issues.
4503 descriptions in function headers are now translated properly to lower
4506 underscores. ACPICA BZ 961. Also fixes translation problems such as
4512 local_fADT -> local_FADT
4513 execute_oSI -> execute_OSI
4515 iASL: Fixed a problem where null bytes were inadvertently emitted into
4519 iASL: Added the existing debug options to the standard help screen. There
4521 no longer two different help screens. ACPICA BZ 957.
4523 AcpiHelp: Fixed some typos in the various predefined name descriptions.
4525 expand some of the descriptions where appropriate.
4527 iASL: Fixed the -ot option (display compile times/statistics). Was not
4529 properly for standard output; only worked for the debug file case.
4531 ----------------------------------------
4532 18 May 2012. Summary of changes for version 20120518:
4535 1) ACPICA Core Subsystem:
4537 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
4539 to block until asynchronous events such as notifies and GPEs have
4541 Within ACPICA, it is only called before a notify or GPE handler is
4542 removed/uninstalled. It also may be useful for the host OS within related
4543 drivers such as the Embedded Controller driver. See the ACPICA reference
4545 additional information. ACPICA BZ 868.
4547 ACPI Tables: Added a new error message for a possible overflow failure
4549 the conversion of FADT 32-bit legacy register addresses to internal
4552 bit GAS structure representation. The GAS has a one-byte "bit length"
4554 thus limiting the register length to 255 bits. ACPICA BZ 953.
4556 Example Code and Data Size: These are the sizes for the OS-independent
4557 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4559 version of the code includes the debug output trace mechanism and has a
4561 larger code and data size.
4564 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4565 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4567 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
4568 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
4571 2) iASL Compiler/Disassembler and Tools:
4573 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
4575 This keyword was added late in the ACPI 5.0 release cycle and was not
4576 implemented until now.
4578 Disassembler: Added support for Operation Region externals. Adds missing
4579 support for operation regions that are defined in another table, and
4580 referenced locally via a Field or BankField ASL operator. Now generates
4582 correct External statement.
4584 Disassembler: Several additional fixes for the External() statement
4586 related to some ASL operators. Also, order the External() statements
4587 alphabetically in the disassembler output. Fixes the External()
4590 the Create* field, Alias, and Scope operators:
4591 1) Create* buffer field operators - fix type mismatch warning on
4593 2) Alias - implement missing External support
4594 3) Scope - fix to make sure all necessary externals are emitted.
4596 iASL: Improved pathname support. For include files, merge the prefix
4598 with the file pathname and eliminate unnecessary components. Convert
4599 backslashes in all pathnames to forward slashes, for readability. Include
4601 pathname changes affect both #include and Include() type operators.
4603 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
4605 of a valid line by inserting a newline and then returning the EOF during
4607 next call to GetNextLine. Prevents the line from being ignored due to EOF
4610 iASL: Implemented some changes to enhance the IDE support (-vi option.)
4612 and Warning messages are now correctly recognized for both the source
4614 browser and the global error and warning counts.
4616 ----------------------------------------
4617 20 April 2012. Summary of changes for version 20120420:
4620 1) ACPICA Core Subsystem:
4622 Implemented support for multiple notify handlers. This change adds
4625 allow multiple system and device notify handlers on Device, Thermal Zone,
4627 Processor objects. This can simplify the host OS notification
4629 Also re-worked and restructured the entire notify support code to
4631 handler installation, handler removal, notify event queuing, and notify
4632 dispatch to handler(s). Note: there can still only be two global notify
4633 handlers - one for system notifies and one for device notifies. There are
4635 changes to the existing handler install/remove interfaces. Lin Ming, Bob
4636 Moore, Rafael Wysocki.
4638 Fixed a regression in the package repair code where the object reference
4639 count was calculated incorrectly. Regression was introduced in the commit
4640 "Support to add Package wrappers".
4642 Fixed a couple possible memory leaks in the AML parser, in the error
4644 path. Jesper Juhl, Lin Ming.
4646 Example Code and Data Size: These are the sizes for the OS-independent
4647 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4648 debug version of the code includes the debug output trace mechanism and
4650 much larger code and data size.
4653 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4654 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4656 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4657 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
4660 2) iASL Compiler/Disassembler and Tools:
4662 iASL: Fixed a problem with the resource descriptor support where the
4664 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
4665 included in cumulative descriptor offset, resulting in incorrect values
4667 resource tags within resource descriptors appearing after a
4669 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
4671 iASL and Preprocessor: Implemented full support for the #line directive
4673 correctly track original source file line numbers through the .i
4675 output file - for error and warning messages.
4677 iASL: Expand the allowable byte constants for address space IDs.
4679 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
4680 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
4682 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
4684 iASL: Add option to completely disable the preprocessor (-Pn).
4686 iASL: Now emit all error/warning messages to standard error (stderr) by
4687 default (instead of the previous stdout).
4689 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
4691 for resource descriptor offset fix above. Update/cleanup error output
4692 routines. Enable and send iASL errors/warnings to an error logfile
4693 (error.txt). Send all other iASL output to a logfile (compiler.txt).
4695 several extraneous "unrecognized operator" messages.
4697 ----------------------------------------
4698 20 March 2012. Summary of changes for version 20120320:
4701 1) ACPICA Core Subsystem:
4703 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
4704 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
4706 does not execute these methods, and therefore these methods are often
4707 untested. It has been seen on some systems where the execution of these
4708 methods causes errors and also prevents the machine from entering S5. It
4710 therefore suggested that host operating systems do not execute these
4712 by default. In the future, perhaps these methods can be optionally
4714 based on the age of the system and/or what is the newest version of
4716 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
4718 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
4721 Fixed a problem where the length of the local/common FADT was set too
4723 The local FADT table length cannot be set to the common length until the
4724 original length has been examined. There is code that checks the table
4726 and sets various fields appropriately. This can affect older machines
4728 early FADT versions. For example, this can cause inadvertent writes to
4730 CST_CNT register. Julian Anastasov.
4732 Fixed a mapping issue related to a physical table override. Use the
4734 mapping mechanism for tables loaded via the physical override OSL
4736 This allows for early mapping before the virtual memory manager is
4738 Thomas Renninger, Bob Moore.
4740 Enhanced the automatic return-object repair code: Repair a common problem
4742 predefined methods that are defined to return a variable-length Package
4744 sub-objects. If there is only one sub-object, some BIOS ASL code
4746 simply returns the single object instead of a Package with one sub-
4748 This new support will repair this error by wrapping a Package object
4750 the original object, creating the correct and expected Package with one
4752 object. Names that can be repaired in this manner include: _ALR, _CSD,
4754 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
4757 Changed the exception code returned for invalid ACPI paths passed as
4758 parameters to external interfaces such as AcpiEvaluateObject. Was
4759 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
4761 Example Code and Data Size: These are the sizes for the OS-independent
4762 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4764 version of the code includes the debug output trace mechanism and has a
4766 larger code and data size.
4769 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4770 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4772 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
4773 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4776 2) iASL Compiler/Disassembler and Tools:
4778 iASL: Added the infrastructure and initial implementation of a integrated
4780 like preprocessor. This will simplify BIOS development process by
4782 the need for a separate preprocessing step during builds. On Windows, it
4784 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
4785 features including full #define() macro support are still under
4787 These preprocessor directives are supported:
4800 In addition, these new command line options are supported:
4801 -D <symbol> Define symbol for preprocessor use
4802 -li Create preprocessed output file (*.i)
4803 -P Preprocess only and create preprocessor output file (*.i)
4805 Table Compiler: Fixed a problem where the equals operator within an
4807 did not work properly.
4809 Updated iASL to use the current versions of Bison/Flex. Updated the
4811 project file to invoke these tools from the standard location. ACPICA BZ
4814 Flex for Windows: V2.5.4
4815 Bison for Windows: V2.4.1
4817 ----------------------------------------
4818 15 February 2012. Summary of changes for version 20120215:
4821 1) ACPICA Core Subsystem:
4823 There have been some major changes to the sleep/wake support code, as
4824 described below (a - e).
4826 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
4827 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
4828 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
4830 time the _BFS method is called and the _WAK method is called. NOTE: all
4832 must update their wake/resume code or else sleep/wake will not work
4836 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
4838 method. Some machines require that the GPEs are enabled before the _WAK
4840 is executed. Thomas Renninger.
4842 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
4844 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
4846 determine whether the system is rebooting or resuming. Matthew Garrett.
4848 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
4850 match the ACPI specification requirement. Rafael Wysocki.
4852 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
4853 registers within the V5 FADT. This support adds two new files:
4854 hardware/hwesleep.c implements the support for the new registers. Moved
4856 sleep/wake external interfaces to hardware/hwxfsleep.c.
4859 Added a new OSL interface for ACPI table overrides,
4860 AcpiOsPhysicalTableOverride. This interface allows the host to override a
4861 table via a physical address, instead of the logical address required by
4862 AcpiOsTableOverride. This simplifies the host implementation. Initial
4863 implementation by Thomas Renninger. The ACPICA implementation creates a
4865 shared function for table overrides that attempts both a logical and a
4868 Expanded the OSL memory read/write interfaces to 64-bit data
4869 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
4870 transfer support for GAS register structures passed to AcpiRead and
4873 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
4875 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
4877 See the ACPICA reference for details. ACPICA BZ 942. This option removes
4879 10% of the code and 5% of the static data, and the following hardware
4881 features become unavailable:
4882 PM Event and Control registers
4883 SCI interrupt (and handler)
4885 General Purpose Events (GPEs)
4888 FACS table (Waking vectors and Global Lock)
4890 Updated the unix tarball directory structure to match the ACPICA git
4892 tree. This ensures that the generic unix makefiles work properly (in
4893 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
4896 Updated the return value of the _REV predefined method to integer value 5
4898 reflect ACPI 5.0 support.
4900 Moved the external ACPI PM timer interface prototypes to the public
4902 file where they belong.
4904 Example Code and Data Size: These are the sizes for the OS-independent
4905 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4907 version of the code includes the debug output trace mechanism and has a
4909 larger code and data size.
4912 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4913 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4915 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
4916 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
4919 2) iASL Compiler/Disassembler and Tools:
4921 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
4922 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
4923 incorrectly displayed.
4925 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
4928 ----------------------------------------
4929 11 January 2012. Summary of changes for version 20120111:
4932 1) ACPICA Core Subsystem:
4934 Implemented a new mechanism to allow host device drivers to check for
4936 range conflicts with ACPI Operation Regions. Both SystemMemory and
4938 address spaces are supported. A new external interface,
4939 AcpiCheckAddressRange,
4940 allows drivers to check an address range against the ACPI namespace. See
4942 ACPICA reference for additional details. Adds one new file,
4943 utilities/utaddress.c. Lin Ming, Bob Moore.
4945 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
4948 Status registers, update the ACPI 5.0 flags, and update internal data
4949 structures to handle an FADT larger than 256 bytes. The size of the ACPI
4953 Updated all ACPICA copyrights and signons to 2012. Added the 2012
4955 all module headers and signons, including the standard Linux header. This
4956 affects virtually every file in the ACPICA core subsystem, iASL compiler,
4958 all ACPICA utilities.
4960 Example Code and Data Size: These are the sizes for the OS-independent
4961 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4963 version of the code includes the debug output trace mechanism and has a
4965 larger code and data size.
4968 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
4969 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
4971 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
4972 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
4975 2) iASL Compiler/Disassembler and Tools:
4977 Disassembler: fixed a problem with the automatic resource tag generation
4978 support. Fixes a problem where the resource tags are inadvertently not
4979 constructed if the table being disassembled contains external references
4981 control methods. Moved the actual construction of the tags to after the
4983 namespace is constructed (after 2nd parse is invoked due to external
4985 method references.) ACPICA BZ 941.
4987 Table Compiler: Make all "generic" operators caseless. These are the
4989 like UINT8, String, etc. Making these caseless improves ease-of-use.
4993 ----------------------------------------
4994 23 November 2011. Summary of changes for version 20111123:
4996 0) ACPI 5.0 Support:
4998 This release contains full support for the ACPI 5.0 specification, as
5001 Reduced Hardware Support:
5002 -------------------------
5004 This support allows for ACPI systems without the usual ACPI hardware.
5006 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
5008 not attempt to initialize or use any of the usual ACPI hardware. Note,
5010 this flag is set, all of the following ACPI hardware is assumed to be not
5011 present and is not initialized or accessed:
5013 General Purpose Events (GPEs)
5014 Fixed Events (PM1a/PM1b and PM Control)
5015 Power Management Timer and Console Buttons (power/sleep)
5016 Real-time Clock Alarm
5018 System Control Interrupt (SCI)
5019 The FACS is assumed to be non-existent
5024 All new tables and updates to existing tables are fully supported in the
5025 ACPICA headers (for use by device drivers), the disassembler, and the
5027 Data Table Compiler. ACPI 5.0 defines these new tables:
5029 BGRT /* Boot Graphics Resource Table */
5030 DRTM /* Dynamic Root of Trust for Measurement table */
5031 FPDT /* Firmware Performance Data Table */
5032 GTDT /* Generic Timer Description Table */
5033 MPST /* Memory Power State Table */
5034 PCCT /* Platform Communications Channel Table */
5035 PMTT /* Platform Memory Topology Table */
5036 RASF /* RAS Feature table */
5038 Operation Regions/SpaceIDs:
5039 ---------------------------
5041 All new operation regions are fully supported by the iASL compiler, the
5042 disassembler, and the ACPICA runtime code (for dispatch to region
5044 The new operation region Space IDs are:
5049 Resource Descriptors:
5050 ---------------------
5052 All new ASL resource descriptors are fully supported by the iASL
5055 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
5057 all new predefined resource tags). New descriptors are:
5066 ASL/AML Operators, New and Modified:
5067 ------------------------------------
5069 One new operator is added, the Connection operator, which is used to
5071 a GeneralPurposeIo or GenericSerialBus resource descriptor with
5073 field objects within an operation region. Several new protocols are
5075 with the AccessAs operator. All are fully supported by the iASL compiler,
5076 disassembler, and runtime ACPICA AML interpreter:
5078 Connection // Declare Field Connection
5080 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
5081 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
5083 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
5084 RawDataBuffer // Data type for Vendor Data
5087 Predefined ASL/AML Objects:
5088 ---------------------------
5090 All new predefined objects/control-methods are supported by the iASL
5092 and the ACPICA runtime validation/repair (arguments and return values.)
5094 predefined names include the following:
5096 Standard Predefined Names (Objects or Control Methods):
5097 _AEI, _CLS, _CPC, _CWS, _DEP,
5098 _DLM, _EVT, _GCP, _CRT, _GWS,
5099 _HRV, _PRE, _PSE, _SRT, _SUB.
5101 Resource Tags (Names used to access individual fields within resource
5103 _DBT, _DPL, _DRS, _END, _FLC,
5104 _IOR, _LIN, _MOD, _PAR, _PHA,
5105 _PIN, _PPI, _POL, _RXL, _SLV,
5106 _SPE, _STB, _TXL, _VEN.
5108 ACPICA External Interfaces:
5109 ---------------------------
5111 Several new interfaces have been defined for use by ACPI-related device
5112 drivers and other host OS services:
5114 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
5116 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
5117 provided by the BIOS. They are intended to be used in conjunction with
5119 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
5120 mutual exclusion with the AML code/interpreter.
5122 AcpiGetEventResources: Returns the (formatted) resource descriptors as
5124 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
5126 resource descriptors associated with hardware-reduced platform events,
5128 to the AcpiGetCurrentResources interface.
5130 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
5131 operation regions, information about the Connection() object and any
5133 length information is passed to the region handler within the Context
5136 AcpiBufferToResource: This interface converts a raw AML buffer containing
5138 resource template or resource descriptor to the ACPI_RESOURCE internal
5140 suitable for use by device drivers. Can be used by an operation region
5142 to convert the Connection() buffer object into a ACPI_RESOURCE.
5144 Miscellaneous/Tools/TestSuites:
5145 -------------------------------
5147 Support for extended _HID names (Four alpha characters instead of three).
5148 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
5149 Support for ACPI 5.0 features in the ASLTS test suite.
5150 Fully updated documentation (ACPICA and iASL reference documents.)
5152 ACPI Table Definition Language:
5153 -------------------------------
5155 Support for this language was implemented and released as a subsystem of
5157 iASL compiler in 2010. (See the iASL compiler User Guide.)
5160 Non-ACPI 5.0 changes for this release:
5161 --------------------------------------
5163 1) ACPICA Core Subsystem:
5165 Fix a problem with operation region declarations where a failure can
5168 the region name and an argument that evaluates to an object (such as the
5169 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
5172 Do not abort an ACPI table load if an invalid space ID is found within.
5174 will be caught later if the offending method is executed. ACPICA BZ 925.
5176 Fixed an issue with the FFixedHW space ID where the ID was not always
5177 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
5179 Fixed a problem with the 32-bit generation of the unix-specific OSL
5180 (osunixxf.c). Lin Ming, ACPICA BZ 936.
5182 Several changes made to enable generation with the GCC 4.6 compiler.
5186 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
5188 field registers out-of-range.
5190 2) iASL Compiler/Disassembler and Tools:
5192 iASL: Implemented the __PATH__ operator, which returns the full pathname
5194 the current source file.
5196 AcpiHelp: Automatically display expanded keyword information for all ASL
5199 Debugger: Add "Template" command to disassemble/dump resource template
5202 Added a new master script to generate and execute the ASLTS test suite.
5203 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
5205 iASL: Fix problem with listing generation during processing of the
5207 operator where AML listing was disabled until the entire Switch block was
5210 iASL: Improve support for semicolon statement terminators. Fix "invalid
5211 character" message for some cases when the semicolon is used. Semicolons
5213 now allowed after every <Term> grammar element. ACPICA BZ 927.
5215 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
5218 Disassembler: Fix problem with disassembly of the DataTableRegion
5220 where an inadvertent "Unhandled deferred opcode" message could be
5223 3) Example Code and Data Size
5225 These are the sizes for the OS-independent acpica.lib produced by the
5226 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5227 includes the debug output trace mechanism and has a much larger code and
5232 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5233 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5235 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
5236 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
5238 ----------------------------------------
5239 22 September 2011. Summary of changes for version 20110922:
5243 Support for ACPI 5.0 in ACPICA has been underway for several months and
5245 be released at the same time that ACPI 5.0 is officially released.
5247 The ACPI 5.0 specification is on track for release in the next few
5250 1) ACPICA Core Subsystem:
5252 Fixed a problem where the maximum sleep time for the Sleep() operator was
5253 intended to be limited to two seconds, but was inadvertently limited to
5257 Linux and Unix makefiles: Added header file dependencies to ensure
5259 generation of ACPICA core code and utilities. Also simplified the
5261 considerably through the use of the vpath variable to specify search
5265 2) iASL Compiler/Disassembler and Tools:
5267 iASL: Implemented support to check the access length for all fields
5269 access named Resource Descriptor fields. For example, if a resource field
5271 defined to be two bits, a warning is issued if a CreateXxxxField() is
5273 with an incorrect bit length. This is implemented for all current
5275 descriptor names. ACPICA BZ 930.
5277 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
5281 iASL: Fixed a couple of issues associated with variable-length package
5282 objects. 1) properly handle constants like One, Ones, Zero -- do not make
5284 VAR_PACKAGE when these are used as a package length. 2) Allow the
5286 opcode (in addition to PACKAGE) when validating object types for
5290 iASL: Emit statistics for all output files (instead of just the ASL input
5292 AML output). Includes listings, hex files, etc.
5294 iASL: Added -G option to the table compiler to allow the compilation of
5296 ACPI tables. The only part of a table that is required is the standard
5301 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
5303 which also adds correct 64-bit support. Also, now all output filenames
5305 completely lower case.
5307 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
5308 loading table files. A warning is issued for any such tables. The only
5309 exception is an FADT. This also fixes a possible fault when attempting to
5311 non-AML tables. ACPICA BZ 932.
5313 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
5315 missing table terminator could cause a fault when using the -p option.
5317 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
5320 3) Example Code and Data Size
5322 These are the sizes for the OS-independent acpica.lib produced by the
5323 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
5324 includes the debug output trace mechanism and has a much larger code and
5328 Previous Release (VC 9.0):
5329 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5330 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5331 Current Release (VC 9.0):
5332 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5333 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5336 ----------------------------------------
5337 23 June 2011. Summary of changes for version 20110623:
5339 1) ACPI CA Core Subsystem:
5341 Updated the predefined name repair mechanism to not attempt repair of a
5343 return object if a _PSS object is present. We can only sort the _TSS
5345 package if there is no _PSS within the same scope. This is because if
5348 present, the ACPI specification dictates that the _TSS Power Dissipation
5350 is to be ignored, and therefore some BIOSs leave garbage values in the
5352 Power field(s). In this case, it is best to just return the _TSS package
5354 is. Reported by, and fixed with assistance from Fenghua Yu.
5356 Added an option to globally disable the control method return value
5358 and repair. This runtime option can be used to disable return value
5361 this is causing a problem on a particular machine. Also added an option
5363 AcpiExec (-dr) to set this disable flag.
5365 All makefiles and project files: Major changes to improve generation of
5367 tools. ACPICA BZ 912:
5368 Reduce default optimization levels to improve compatibility
5369 For Linux, add strict-aliasing=0 for gcc 4
5370 Cleanup and simplify use of command line defines
5371 Cleanup multithread library support
5372 Improve usage messages
5374 Linux-specific header: update handling of THREAD_ID and pthread. For the
5376 bit case, improve casting to eliminate possible warnings, especially with
5380 Example Code and Data Size: These are the sizes for the OS-independent
5381 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5383 version of the code includes the debug output trace mechanism and has a
5385 larger code and data size.
5387 Previous Release (VC 9.0):
5388 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5389 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5390 Current Release (VC 9.0):
5391 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
5392 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5394 2) iASL Compiler/Disassembler and Tools:
5396 With this release, a new utility named "acpihelp" has been added to the
5398 package. This utility summarizes the ACPI specification chapters for the
5400 and AML languages. It generates under Linux/Unix as well as Windows, and
5401 provides the following functionality:
5402 Find/display ASL operator(s) -- with description and syntax.
5403 Find/display ASL keyword(s) -- with exact spelling and descriptions.
5404 Find/display ACPI predefined name(s) -- with description, number
5405 of arguments, and the return value data type.
5406 Find/display AML opcode name(s) -- with opcode, arguments, and
5408 Decode/display AML opcode -- with opcode name, arguments, and
5411 Service Layers: Make multi-thread support configurable. Conditionally
5413 the multi-thread support so that threading libraries will not be linked
5416 necessary. The only tool that requires multi-thread support is AcpiExec.
5418 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
5420 Bison appear to want the interface to yyerror to be a const char * (or at
5421 least this is a problem when generating iASL on some systems.) ACPICA BZ
5425 Tools: Fix for systems where O_BINARY is not defined. Only used for
5427 versions of the tools.
5429 ----------------------------------------
5430 27 May 2011. Summary of changes for version 20110527:
5432 1) ACPI CA Core Subsystem:
5434 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
5436 signature. Now, only allow SSDT, OEMx, and a null signature. History:
5437 1) Originally, we checked the table signature for "SSDT" or "PSDT".
5438 (PSDT is now obsolete.)
5439 2) We added support for OEMx tables, signature "OEM" plus a fourth
5440 "don't care" character.
5441 3) Valid tables were encountered with a null signature, so we just
5442 gave up on validating the signature, (05/2008).
5443 4) We encountered non-AML tables such as the MADT, which caused
5444 interpreter errors and kernel faults. So now, we once again allow
5445 only SSDT, OEMx, and now, also a null signature. (05/2011).
5447 Added the missing _TDL predefined name to the global name list in order
5449 enable validation. Affects both the core ACPICA code and the iASL
5452 Example Code and Data Size: These are the sizes for the OS-independent
5453 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5455 version of the code includes the debug output trace mechanism and has a
5457 larger code and data size.
5459 Previous Release (VC 9.0):
5460 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5461 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5462 Current Release (VC 9.0):
5463 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
5464 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
5466 2) iASL Compiler/Disassembler and Tools:
5468 Debugger/AcpiExec: Implemented support for "complex" method arguments on
5470 debugger command line. This adds support beyond simple integers --
5472 Strings, Buffers, and Packages. Includes support for nested packages.
5473 Increased the default command line buffer size to accommodate these
5475 See the ACPICA reference for details and syntax. ACPICA BZ 917.
5477 Debugger/AcpiExec: Implemented support for "default" method arguments for
5479 Execute/Debug command. Now, the debugger will always invoke a control
5481 with the required number of arguments -- even if the command line
5483 none or insufficient arguments. It uses default integer values for any
5485 arguments. Also fixes a bug where only six method arguments maximum were
5486 supported instead of the required seven.
5488 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
5490 also return status in order to prevent buffer overruns. See the ACPICA
5491 reference for details and syntax. ACPICA BZ 921
5493 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
5494 makefiles to simplify support for the two different but similar parser
5495 generators, bison and yacc.
5497 Updated the generic unix makefile for gcc 4. The default gcc version is
5499 expected to be 4 or greater, since options specific to gcc 4 are used.
5501 ----------------------------------------
5502 13 April 2011. Summary of changes for version 20110413:
5504 1) ACPI CA Core Subsystem:
5506 Implemented support to execute a so-called "orphan" _REG method under the
5508 device. This change will force the execution of a _REG method underneath
5511 device even if there is no corresponding operation region of type
5512 EmbeddedControl. Fixes a problem seen on some machines and apparently is
5513 compatible with Windows behavior. ACPICA BZ 875.
5515 Added more predefined methods that are eligible for automatic NULL
5517 element removal. This change adds another group of predefined names to
5520 of names that can be repaired by having NULL package elements dynamically
5521 removed. This group are those methods that return a single variable-
5523 package containing simple data types such as integers, buffers, strings.
5525 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
5528 and _TZD. ACPICA BZ 914.
5530 Split and segregated all internal global lock functions to a new file,
5533 Updated internal address SpaceID for DataTable regions. Moved this
5536 id in preparation for ACPI 5.0 changes that will include some new space
5539 change should not affect user/host code.
5541 Example Code and Data Size: These are the sizes for the OS-independent
5543 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5545 the code includes the debug output trace mechanism and has a much larger
5550 Previous Release (VC 9.0):
5551 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5552 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5553 Current Release (VC 9.0):
5554 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
5555 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
5557 2) iASL Compiler/Disassembler and Tools:
5559 iASL/DTC: Major update for new grammar features. Allow generic data types
5561 custom ACPI tables. Field names are now optional. Any line can be split
5563 multiple lines using the continuation char (\). Large buffers now use
5565 continuation character(s) and no colon on the continuation lines. See the
5567 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
5570 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
5572 Since the parser stuffs a "zero" as the return value for these statements
5575 the underlying AML grammar), they were seen as "return with value" by the
5577 semantic checking. They are now seen correctly as "null" return
5580 iASL: Check if a_REG declaration has a corresponding Operation Region.
5582 check for each _REG to ensure that there is in fact a corresponding
5584 region declaration in the same scope. If not, the _REG method is not very
5586 since it probably won't be executed. ACPICA BZ 915.
5588 iASL/DTC: Finish support for expression evaluation. Added a new
5591 that implements c-style operator precedence and parenthesization. ACPICA
5595 Disassembler/DTC: Remove support for () and <> style comments in data
5598 that DTC has full expression support, we don't want to have comment
5601 start with a parentheses or a less-than symbol. Now, only the standard /*
5604 comments are supported, as well as the bracket [] comments.
5606 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
5608 headers in the acpidump file. Update the header validation to support
5610 tables. Problem introduced in previous AcpiXtract version in the change
5612 support "wrong checksum" error messages emitted by acpidump utility.
5614 iASL: Add a * option to generate all template files (as a synonym for
5618 "iasl -T *" or "iasl -T ALL".
5620 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
5622 abort the compiler on "fatal" errors, simply should abort the current
5624 This allows multiple compiles with a single (possibly wildcard) compiler
5627 ----------------------------------------
5628 16 March 2011. Summary of changes for version 20110316:
5630 1) ACPI CA Core Subsystem:
5632 Fixed a problem caused by a _PRW method appearing at the namespace root
5634 during the setup of wake GPEs. A fault could occur if a _PRW directly
5637 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
5639 Implemented support for "spurious" Global Lock interrupts. On some
5641 global lock interrupt can occur without the pending flag being set. Upon
5644 interrupt, we now ensure that a thread is actually waiting for the lock
5646 signaling GL availability. Rafael Wysocki, Bob Moore.
5648 Example Code and Data Size: These are the sizes for the OS-independent
5650 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
5652 the code includes the debug output trace mechanism and has a much larger
5657 Previous Release (VC 9.0):
5658 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5659 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5660 Current Release (VC 9.0):
5661 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
5662 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
5664 2) iASL Compiler/Disassembler and Tools:
5666 Implemented full support for the "SLIC" ACPI table. Includes support in
5668 header files, disassembler, table compiler, and template generator. Bob
5672 AcpiXtract: Correctly handle embedded comments and messages from
5674 Apparently some or all versions of acpidump will occasionally emit a
5677 "Wrong checksum", etc., into the dump file. This was causing problems for
5678 AcpiXtract. ACPICA BZ 905.
5680 iASL: Fix the Linux makefile by removing an inadvertent double file
5684 AcpiExec: Update installation of operation region handlers. Install one
5686 for a user-defined address space. This is used by the ASL test suite
5689 ----------------------------------------
5690 11 February 2011. Summary of changes for version 20110211:
5692 1) ACPI CA Core Subsystem:
5694 Added a mechanism to defer _REG methods for some early-installed
5696 Most user handlers should be installed before call to
5697 AcpiEnableSubsystem.
5698 However, Event handlers and region handlers should be installed after
5699 AcpiInitializeObjects. Override handlers for the "default" regions should
5701 installed early, however. This change executes all _REG methods for the
5702 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
5703 chicken/egg issues between them. ACPICA BZ 848.
5705 Implemented an optimization for GPE detection. This optimization will
5707 ignore GPE registers that contain no enabled GPEs -- there is no need to
5708 read the register since this information is available internally. This
5709 becomes more important on machines with a large GPE space. ACPICA
5711 884. Lin Ming. Suggestion from Joe Liu.
5713 Removed all use of the highly unreliable FADT revision field. The
5715 number in the FADT has been found to be completely unreliable and cannot
5717 trusted. Only the actual table length can be used to infer the version.
5719 change updates the ACPICA core and the disassembler so that both no
5721 even look at the FADT version and instead depend solely upon the FADT
5724 Fix an unresolved name issue for the no-debug and no-error-message source
5725 generation cases. The _AcpiModuleName was left undefined in these cases,
5727 it is actually needed as a parameter to some interfaces. Define
5728 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
5730 Split several large files (makefiles and project files updated)
5731 utglobal.c -> utdecode.c
5732 dbcomds.c -> dbmethod.c dbnames.c
5733 dsopcode.c -> dsargs.c dscontrol.c
5734 dsload.c -> dsload2.c
5735 aslanalyze.c -> aslbtypes.c aslwalks.c
5737 Example Code and Data Size: These are the sizes for the OS-independent
5738 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5739 debug version of the code includes the debug output trace mechanism and
5741 a much larger code and data size.
5743 Previous Release (VC 9.0):
5744 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5745 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5746 Current Release (VC 9.0):
5747 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5748 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5750 2) iASL Compiler/Disassembler and Tools:
5752 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
5753 These are useful C-style macros with the standard definitions. ACPICA
5756 iASL/DTC: Added support for integer expressions and labels. Support for
5758 expressions for all integer fields in all ACPI tables. Support for labels
5760 "generic" portions of tables such as UEFI. See the iASL reference manual.
5762 Debugger: Added a command to display the status of global handlers. The
5763 "handlers" command will display op region, fixed event, and miscellaneous
5764 global handlers. installation status -- and for op regions, whether
5766 or user-installed handler will be used.
5768 iASL: Warn if reserved method incorrectly returns a value. Many
5770 names are defined such that they do not return a value. If implemented as
5772 method, issue a warning if such a name explicitly returns a value. ACPICA
5775 iASL: Added detection of GPE method name conflicts. Detects a conflict
5777 there are two GPE methods of the form _Lxy and _Exy in the same scope.
5779 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
5781 iASL/DTC: Fixed a couple input scanner issues with comments and line
5782 numbers. Comment remover could get confused and miss a comment ending.
5784 a problem with line counter maintenance.
5786 iASL/DTC: Reduced the severity of some errors from fatal to error. There
5788 no need to abort on simple errors within a field definition.
5790 Debugger: Simplified the output of the help command. All help output now
5792 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
5794 ----------------------------------------
5795 12 January 2011. Summary of changes for version 20110112:
5797 1) ACPI CA Core Subsystem:
5799 Fixed a race condition between method execution and namespace walks that
5801 possibly cause a fault. The problem was apparently introduced in version
5802 20100528 as a result of a performance optimization that reduces the
5805 namespace walks upon method exit by using the delete_namespace_subtree
5806 function instead of the delete_namespace_by_owner function used
5808 Bug is a missing namespace lock in the delete_namespace_subtree function.
5809 dana.myers@oracle.com
5811 Fixed several issues and a possible fault with the automatic "serialized"
5812 method support. History: This support changes a method to "serialized" on
5814 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
5815 possibility that it cannot handle reentrancy. This fix repairs a couple
5817 issues seen in the field, especially on machines with many cores:
5819 1) Delete method children only upon the exit of the last thread,
5820 so as to not delete objects out from under other running threads
5821 (and possibly causing a fault.)
5822 2) Set the "serialized" bit for the method only upon the exit of the
5823 Last thread, so as to not cause deadlock when running threads
5825 3) Cleanup the use of the AML "MethodFlags" and internal method flags
5826 so that there is no longer any confusion between the two.
5828 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
5830 Debugger: Now lock the namespace for duration of a namespace dump.
5832 issues if the namespace is changing dynamically underneath the debugger.
5833 Especially affects temporary namespace nodes, since the debugger displays
5836 Updated the ordering of include files. The ACPICA headers should appear
5837 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
5839 any necessary compiler-specific defines, etc. Affects the ACPI-related
5843 Updated all ACPICA copyrights and signons to 2011. Added the 2011
5845 to all module headers and signons, including the Linux header. This
5847 virtually every file in the ACPICA core subsystem, iASL compiler, and all
5850 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
5851 project files for VC++ 6.0 are now obsolete. New project files can be
5853 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
5856 Example Code and Data Size: These are the sizes for the OS-independent
5857 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
5858 debug version of the code includes the debug output trace mechanism and
5860 much larger code and data size.
5862 Previous Release (VC 6.0):
5863 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5864 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5865 Current Release (VC 9.0):
5866 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
5867 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
5869 2) iASL Compiler/Disassembler and Tools:
5871 iASL: Added generic data types to the Data Table compiler. Add "generic"
5873 types such as UINT32, String, Unicode, etc., to simplify the generation
5875 platform-defined tables such as UEFI. Lin Ming.
5877 iASL: Added listing support for the Data Table Compiler. Adds listing
5879 (-l) to display actual binary output for each line of input code.
5881 ----------------------------------------
5882 09 December 2010. Summary of changes for version 20101209:
5884 1) ACPI CA Core Subsystem:
5886 Completed the major overhaul of the GPE support code that was begun in
5888 2010. Major features include: removal of _PRW execution in ACPICA (host
5889 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
5890 changes to existing interfaces, simplification of GPE handler operation,
5892 a handful of new interfaces:
5898 One new file, evxfgpe.c to consolidate all external GPE interfaces.
5900 See the ACPICA Programmer Reference for full details and programming
5901 information. See the new section 4.4 "General Purpose Event (GPE)
5903 for a full overview, and section 8.7 "ACPI General Purpose Event
5905 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
5907 Bob Moore, Rafael Wysocki.
5909 Implemented a new GPE feature for Windows compatibility, the "Implicit
5911 GPE Notify". This feature will automatically issue a Notify(2) on a
5913 when a Wake GPE is received if there is no corresponding GPE method or
5914 handler. ACPICA BZ 870.
5916 Fixed a problem with the Scope() operator during table parse and load
5918 During load phase (table load or method execution), the scope operator
5920 not enter the target into the namespace. Instead, it should open a new
5922 at the target location. Linux BZ 19462, ACPICA BZ 882.
5924 Example Code and Data Size: These are the sizes for the OS-independent
5925 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5926 debug version of the code includes the debug output trace mechanism and
5928 much larger code and data size.
5931 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
5932 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
5934 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
5935 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
5937 2) iASL Compiler/Disassembler and Tools:
5939 iASL: Relax the alphanumeric restriction on _CID strings. These strings
5941 "bus-specific" per the ACPI specification, and therefore any characters
5943 acceptable. The only checks that can be performed are for a null string
5945 perhaps for a leading asterisk. ACPICA BZ 886.
5947 iASL: Fixed a problem where a syntax error that caused a premature EOF
5948 condition on the source file emitted a very confusing error message. The
5949 premature EOF is now detected correctly. ACPICA BZ 891.
5951 Disassembler: Decode the AccessSize within a Generic Address Structure
5953 access, word access, etc.) Note, this field does not allow arbitrary bit
5954 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
5956 New: AcpiNames utility - Example namespace dump utility. Shows an example
5958 ACPICA configuration for a minimal namespace dump utility. Uses table and
5959 namespace managers, but no AML interpreter. Does not add any
5961 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
5962 partition and configure ACPICA. ACPICA BZ 883.
5964 AML Debugger: Increased the debugger buffer size for method return
5966 Was 4K, increased to 16K. Also enhanced error messages for debugger
5968 execution, including the buffer overflow case.
5970 ----------------------------------------
5971 13 October 2010. Summary of changes for version 20101013:
5973 1) ACPI CA Core Subsystem:
5975 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
5977 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
5978 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
5980 Changed the type of the predefined namespace object _TZ from ThermalZone
5982 Device. This was found to be confusing to the host software that
5984 the various thermal zones, since _TZ is not really a ThermalZone.
5987 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
5990 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
5991 string is "Windows 2006 SP2".
5993 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
5995 code automatically repairs _HID-related strings, this type of code is no
5996 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
5999 Example Code and Data Size: These are the sizes for the OS-independent
6000 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6001 debug version of the code includes the debug output trace mechanism and
6003 much larger code and data size.
6006 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6007 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6009 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6010 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6012 2) iASL Compiler/Disassembler and Tools:
6014 iASL: Implemented additional compile-time validation for _HID strings.
6016 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
6019 the string must be exactly seven or eight characters. For both _HID and
6021 strings, all characters must be alphanumeric. ACPICA BZ 874.
6023 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
6024 descriptors that are mostly or all zeros, with the expectation that they
6026 be filled in at runtime. iASL now allows this as long as there is a
6028 tag" (name) associated with the descriptor, which gives the ASL a handle
6029 needed to modify the descriptor. ACPICA BZ 873.
6031 Added single-thread support to the generic Unix application OSL.
6033 for iASL support, this change removes the use of semaphores in the
6035 threaded ACPICA tools/applications - increasing performance. The
6036 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
6037 option. ACPICA BZ 879.
6039 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
6041 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
6043 iASL: Moved all compiler messages to a new file, aslmessages.h.
6045 ----------------------------------------
6046 15 September 2010. Summary of changes for version 20100915:
6048 1) ACPI CA Core Subsystem:
6050 Removed the AcpiOsDerivePciId OSL interface. The various host
6052 of this function were not OS-dependent and are now obsolete and can be
6053 removed from all host OSLs. This function has been replaced by
6054 AcpiHwDerivePciId, which is now part of the ACPICA core code.
6055 AcpiHwDerivePciId has been implemented without recursion. Adds one new
6056 module, hwpci.c. ACPICA BZ 857.
6058 Implemented a dynamic repair for _HID and _CID strings. The following
6059 problems are now repaired at runtime: 1) Remove a leading asterisk in the
6060 string, and 2) the entire string is uppercased. Both repairs are in
6061 accordance with the ACPI specification and will simplify host driver
6065 The ACPI_THREAD_ID type is no longer configurable, internally it is now
6066 always UINT64. This simplifies the ACPICA code, especially any printf
6068 UINT64 is the only common data type for all thread_id types across all
6069 operating systems. It is now up to the host OSL to cast the native
6071 type to UINT64 before returning the value to ACPICA (via
6073 Lin Ming, Bob Moore.
6075 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
6077 keyword is not standard across compilers, and this type allows inline to
6079 configured on a per-compiler basis. Lin Ming.
6081 Made the system global AcpiGbl_SystemAwakeAndRunning publically
6083 Added an extern for this boolean in acpixf.h. Some hosts utilize this
6085 during suspend/restore operations. ACPICA BZ 869.
6087 All code that implements error/warning messages with the "ACPI:" prefix
6089 been moved to a new module, utxferror.c.
6091 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
6093 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
6095 Example Code and Data Size: These are the sizes for the OS-independent
6096 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6097 debug version of the code includes the debug output trace mechanism and
6099 much larger code and data size.
6102 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6103 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6105 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
6106 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
6108 2) iASL Compiler/Disassembler and Tools:
6110 iASL/Disassembler: Write ACPI errors to stderr instead of the output
6112 This keeps the output files free of random error messages that may
6114 from within the namespace/interpreter code. Used this opportunity to
6116 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
6117 866. Lin Ming, Bob Moore.
6119 Tools: update some printfs for ansi warnings on size_t. Handle width
6121 of size_t on 32-bit versus 64-bit generations. Lin Ming.
6123 ----------------------------------------
6124 06 August 2010. Summary of changes for version 20100806:
6126 1) ACPI CA Core Subsystem:
6128 Designed and implemented a new host interface to the _OSI support code.
6130 will allow the host to dynamically add or remove multiple _OSI strings,
6132 well as install an optional handler that is called for each _OSI
6134 Also added a new AML debugger command, 'osi' to display and modify the
6136 _OSI string table, and test support in the AcpiExec utility. See the
6138 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
6140 AcpiInstallInterface - Add an _OSI string.
6141 AcpiRemoveInterface - Delete an _OSI string.
6142 AcpiInstallInterfaceHandler - Install optional _OSI handler.
6144 AcpiOsValidateInterface - no longer used.
6146 source/components/utilities/utosi.c
6148 Re-introduced the support to enable multi-byte transfers for Embedded
6149 Controller (EC) operation regions. A reported problem was found to be a
6151 in the host OS, not in the multi-byte support. Previously, the maximum
6153 size passed to the EC operation region handler was a single byte. There
6155 often EC Fields larger than one byte that need to be transferred, and it
6157 useful for the EC driver to lock these as a single transaction. This
6159 enables single transfers larger than 8 bits. This effectively changes the
6160 access to the EC space from ByteAcc to AnyAcc, and will probably require
6161 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
6163 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
6165 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
6166 prototype in acpiosxf.h had the output value pointer as a (void *).
6167 It should be a (UINT64 *). This may affect some host OSL code.
6169 Fixed a couple problems with the recently modified Linux makefiles for
6171 and AcpiExec. These new makefiles place the generated object files in the
6172 local directory so that there can be no collisions between the files that
6174 shared between them that are compiled with different options.
6176 Example Code and Data Size: These are the sizes for the OS-independent
6177 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6178 debug version of the code includes the debug output trace mechanism and
6180 much larger code and data size.
6183 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6184 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6186 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
6187 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
6189 2) iASL Compiler/Disassembler and Tools:
6191 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
6193 namespace from and disassemble an entire group of AML files. Useful for
6194 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
6196 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
6198 iASL: Allow multiple invocations of -e option. This change allows
6200 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
6204 ----------------------------------------
6205 02 July 2010. Summary of changes for version 20100702:
6207 1) ACPI CA Core Subsystem:
6209 Implemented several updates to the recently added GPE reference count
6210 support. The model for "wake" GPEs is changing to give the host OS
6212 control of these GPEs. Eventually, the ACPICA core will not execute any
6214 methods, since the host already must execute them. Also, additional
6216 were made to help ensure that the reference counts are kept in proper
6217 synchronization with reality. Rafael J. Wysocki.
6219 1) Ensure that GPEs are not enabled twice during initialization.
6220 2) Ensure that GPE enable masks stay in sync with the reference count.
6221 3) Do not inadvertently enable GPEs when writing GPE registers.
6222 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
6223 interface. This interface will set or clear individual GPEs for wakeup.
6224 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
6226 are now used for "runtime" GPEs only.
6228 Changed the behavior of the GPE install/remove handler interfaces. The
6231 no longer disabled during this process, as it was found to cause problems
6233 some machines. Rafael J. Wysocki.
6235 Reverted a change introduced in version 20100528 to enable Embedded
6236 Controller multi-byte transfers. This change was found to cause problems
6238 Index Fields and possibly Bank Fields. It will be reintroduced when these
6239 problems have been resolved.
6241 Fixed a problem with references to Alias objects within Package Objects.
6243 reference to an Alias within the definition of a Package was not always
6244 resolved properly. Aliases to objects like Processors, Thermal zones,
6246 were resolved to the actual object instead of a reference to the object
6249 should be. Package objects are only allowed to contain integer, string,
6250 buffer, package, and reference objects. Redhat bugzilla 608648.
6252 Example Code and Data Size: These are the sizes for the OS-independent
6253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6254 debug version of the code includes the debug output trace mechanism and
6256 much larger code and data size.
6259 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6260 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6262 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6263 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
6265 2) iASL Compiler/Disassembler and Tools:
6267 iASL: Implemented a new compiler subsystem to allow definition and
6268 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
6270 are called "ACPI Data Tables", and the new compiler is the "Data Table
6271 Compiler". This compiler is intended to simplify the existing error-prone
6272 process of creating these tables for the BIOS, as well as allowing the
6273 disassembly, modification, recompilation, and override of existing ACPI
6275 tables. See the iASL User Guide for detailed information.
6277 iASL: Implemented a new Template Generator option in support of the new
6279 Table Compiler. This option will create examples of all known ACPI tables
6280 that can be used as the basis for table development. See the iASL
6281 documentation and the -T option.
6283 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
6286 Updated the Linux makefiles for iASL and AcpiExec to place the generated
6287 object files in the local directory so that there can be no collisions
6288 between the shared files between them that are generated with different
6291 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
6293 the #define __APPLE__ to enable this support.
6295 ----------------------------------------
6296 28 May 2010. Summary of changes for version 20100528:
6298 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
6299 available at www.acpi.info. This is primarily an errata release.
6301 1) ACPI CA Core Subsystem:
6303 Undefined ACPI tables: We are looking for the definitions for the
6305 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
6307 Implemented support to enable multi-byte transfers for Embedded
6309 (EC) operation regions. Previously, the maximum data size passed to the
6311 operation region handler was a single byte. There are often EC Fields
6313 than one byte that need to be transferred, and it is useful for the EC
6315 to lock these as a single transaction. This change enables single
6317 larger than 8 bits. This effectively changes the access to the EC space
6319 ByteAcc to AnyAcc, and will probably require changes to the host OS
6321 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
6323 transfers. Alexey Starikovskiy, Lin Ming
6325 Implemented a performance enhancement for namespace search and access.
6327 change enhances the performance of namespace searches and walks by adding
6329 backpointer to the parent in each namespace node. On large namespaces,
6331 change can improve overall ACPI performance by up to 9X. Adding a pointer
6333 each namespace node increases the overall size of the internal namespace
6335 about 5%, since each namespace entry usually consists of both a namespace
6336 node and an ACPI operand object. However, this is the first growth of the
6337 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
6339 Implemented a performance optimization that reduces the number of
6341 walks. On control method exit, only walk the namespace if the method is
6343 to have created namespace objects outside of its local scope. Previously,
6345 entire namespace was traversed on each control method exit. This change
6347 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
6350 Added support to truncate I/O addresses to 16 bits for Windows
6352 Some ASL code has been seen in the field that inadvertently has bits set
6353 above bit 15. This feature is optional and is enabled if the BIOS
6355 any Windows OSI strings. It can also be enabled by the host OS. Matthew
6358 Added support to limit the maximum time for the ASL Sleep() operator. To
6359 prevent accidental deep sleeps, limit the maximum time that Sleep() will
6360 actually sleep. Configurable, the default maximum is two seconds. ACPICA
6363 Added run-time validation support for the _WDG and_WED Microsoft
6365 methods. These objects are defined by "Windows Instrumentation", and are
6367 part of the ACPI spec. ACPICA BZ 860.
6369 Expanded all statistic counters used during namespace and device
6370 initialization from 16 to 32 bits in order to support very large
6373 Replaced all instances of %d in printf format specifiers with %u since
6375 all integers in ACPICA are unsigned.
6377 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
6381 Example Code and Data Size: These are the sizes for the OS-independent
6382 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6383 debug version of the code includes the debug output trace mechanism and
6385 much larger code and data size.
6388 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6389 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6391 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
6392 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
6394 2) iASL Compiler/Disassembler and Tools:
6396 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
6397 methods. These objects are defined by "Windows Instrumentation", and are
6399 part of the ACPI spec. ACPICA BZ 860.
6401 AcpiExec: added option to disable the memory tracking mechanism. The -dt
6402 option will disable the tracking mechanism, which improves performance
6405 AcpiExec: Restructured the command line options into -d (disable) and -e
6408 ----------------------------------------
6409 28 April 2010. Summary of changes for version 20100428:
6411 1) ACPI CA Core Subsystem:
6413 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
6414 including FADT-based and GPE Block Devices, execute any _PRW methods in
6416 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
6417 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
6418 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
6419 Devices. Provides compatibility with other ACPI implementations. Two new
6420 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
6423 Fixed a regression introduced in version 20100331 within the table
6425 where initial table loading could fail. This was introduced in the fix
6427 AcpiReallocateRootTable. Also, renamed some of fields in the table
6429 data structures to clarify their meaning and use.
6431 Fixed a possible allocation overrun during internal object copy in
6432 AcpiUtCopySimpleObject. The original code did not correctly handle the
6434 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
6437 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
6438 possible access beyond end-of-allocation. Also, now fully validate
6440 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
6442 Example Code and Data Size: These are the sizes for the OS-independent
6443 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6444 debug version of the code includes the debug output trace mechanism and
6446 much larger code and data size.
6449 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6450 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6452 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
6453 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
6455 2) iASL Compiler/Disassembler and Tools:
6457 iASL: Implemented Min/Max/Len/Gran validation for address resource
6458 descriptors. This change implements validation for the address fields
6460 are common to all address-type resource descriptors. These checks are
6461 implemented: Checks for valid Min/Max, length within the Min/Max window,
6462 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
6464 table 6-40 in the ACPI 4.0a specification. Also split the large
6466 and aslrestype2.c files into five new files. ACPICA BZ 840.
6468 iASL: Added support for the _Wxx predefined names. This support was
6470 and these names were not recognized by the compiler as valid predefined
6471 names. ACPICA BZ 851.
6473 iASL: Added an error for all predefined names that are defined to return
6475 value and thus must be implemented as Control Methods. These include all
6477 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
6478 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
6480 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
6482 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
6484 dynamically loaded via the Load() operator. Also cleaned up output for
6487 ta and -tc options. ACPICA BZ 853.
6489 Tests: Added a new file with examples of extended iASL error checking.
6490 Demonstrates the advanced error checking ability of the iASL compiler.
6491 Available at tests/misc/badcode.asl.
6493 ----------------------------------------
6494 31 March 2010. Summary of changes for version 20100331:
6496 1) ACPI CA Core Subsystem:
6498 Completed a major update for the GPE support in order to improve support
6500 shared GPEs and to simplify both host OS and ACPICA code. Added a
6502 count mechanism to support shared GPEs that require multiple device
6504 Several external interfaces have changed. One external interface has been
6505 removed. One new external interface was added. Most of the GPE external
6506 interfaces now use the GPE spinlock instead of the events mutex (and the
6507 Flags parameter for many GPE interfaces has been removed.) See the
6509 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
6511 Wysocki. ACPICA BZ 831.
6514 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
6520 Implemented write support for DataTable operation regions. These regions
6522 defined via the DataTableRegion() operator. Previously, only read support
6524 implemented. The ACPI specification allows DataTableRegions to be
6528 Implemented a new subsystem option to force a copy of the DSDT to local
6529 memory. Optionally copy the entire DSDT to local memory (instead of
6531 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
6533 the original DSDT, creating the need for this option. Default is FALSE,
6537 Implemented detection of a corrupted or replaced DSDT. This change adds
6538 support to detect a DSDT that has been corrupted and/or replaced from
6540 the OS (by firmware). This is typically catastrophic for the system, but
6542 been seen on some machines. Once this problem has been detected, the DSDT
6543 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
6545 Fixed two problems with AcpiReallocateRootTable during the root table
6547 When copying the root table to the new allocation, the length used was
6548 incorrect. The new size was used instead of the current table size,
6550 too much data was copied. Also, the count of available slots for ACPI
6552 was not set correctly. Alexey Starikovskiy, Bob Moore.
6554 Example Code and Data Size: These are the sizes for the OS-independent
6555 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6556 debug version of the code includes the debug output trace mechanism and
6558 much larger code and data size.
6561 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6562 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6564 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
6565 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
6567 2) iASL Compiler/Disassembler and Tools:
6569 iASL: Implement limited typechecking for values returned from predefined
6570 control methods. The type of any returned static (unnamed) object is now
6571 validated. For example, Return(1). ACPICA BZ 786.
6573 iASL: Fixed a predefined name object verification regression. Fixes a
6575 introduced in version 20100304. An error is incorrectly generated if a
6576 predefined name is declared as a static named object with a value defined
6577 using the keywords "Zero", "One", or "Ones". Lin Ming.
6579 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
6581 reducing the requested registry access rights. ACPICA BZ 842.
6583 Disassembler: fixed a possible fault when generating External()
6585 Introduced in commit ae7d6fd: Properly handle externals with parent-
6587 (carat). Fixes a string length allocation calculation. Lin Ming.
6589 ----------------------------------------
6590 04 March 2010. Summary of changes for version 20100304:
6592 1) ACPI CA Core Subsystem:
6594 Fixed a possible problem with the AML Mutex handling function
6595 AcpiExReleaseMutex where the function could fault under the very rare
6596 condition when the interpreter has blocked, the interpreter lock is
6598 the interpreter is then reentered via the same thread, and attempts to
6599 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
6603 Implemented additional configuration support for the AML "Debug Object".
6604 Output from the debug object can now be enabled via a global variable,
6605 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
6607 This debug output is now available in the release version of ACPICA
6609 of just the debug version. Also, the entire debug output module can now
6611 configured out of the ACPICA build if desired. One new file added,
6612 executer/exdebug.c. Lin Ming, Bob Moore.
6614 Added header support for the ACPI MCHI table (Management Controller Host
6615 Interface Table). This table was added in ACPI 4.0, but the defining
6617 has only recently become available.
6619 Standardized output of integer values for ACPICA warnings/errors. Always
6621 0x prefix for hex output, always use %u for unsigned integer decimal
6623 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
6625 invocations.) These invocations were converted from the original
6626 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
6628 Example Code and Data Size: These are the sizes for the OS-independent
6629 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6630 debug version of the code includes the debug output trace mechanism and
6632 much larger code and data size.
6635 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6636 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6638 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
6639 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
6641 2) iASL Compiler/Disassembler and Tools:
6643 iASL: Implemented typechecking support for static (non-control method)
6644 predefined named objects that are declared with the Name() operator. For
6645 example, the type of this object is now validated to be of type Integer:
6646 Name(_BBN, 1). This change migrates the compiler to using the core
6648 name table instead of maintaining a local version. Added a new file,
6649 aslpredef.c. ACPICA BZ 832.
6651 Disassembler: Added support for the ACPI 4.0 MCHI table.
6653 ----------------------------------------
6654 21 January 2010. Summary of changes for version 20100121:
6656 1) ACPI CA Core Subsystem:
6658 Added the 2010 copyright to all module headers and signons. This affects
6659 virtually every file in the ACPICA core subsystem, the iASL compiler, the
6660 tools/utilities, and the test suites.
6662 Implemented a change to the AcpiGetDevices interface to eliminate
6664 invocations of the _STA method. In the case where a specific _HID is
6665 requested, do not run _STA until a _HID match is found. This eliminates
6666 potentially dozens of _STA calls during a search for a particular
6668 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
6670 Implemented an additional repair for predefined method return values.
6672 to repair unexpected NULL elements within returned Package objects.
6675 Integer of value zero, a NULL String, or a zero-length Buffer as
6677 ACPICA BZ 818. Lin Ming, Bob Moore.
6679 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
6681 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
6683 64-bit AML integers). It is now obsolete and this change removes it from
6685 ACPICA code base, replaced by UINT64. The original typedef has been
6687 for now for compatibility with existing device driver code. ACPICA BZ
6690 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
6692 the parse tree object.
6694 Added additional warning options for the gcc-4 generation. Updated the
6696 accordingly. This includes some code restructuring to eliminate
6698 code, elimination of some gotos, elimination of unused return values,
6700 additional casting, and removal of redundant declarations.
6702 Example Code and Data Size: These are the sizes for the OS-independent
6703 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6704 debug version of the code includes the debug output trace mechanism and
6706 much larger code and data size.
6709 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6710 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6712 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
6713 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
6715 2) iASL Compiler/Disassembler and Tools:
6717 No functional changes for this release.
6719 ----------------------------------------
6720 14 December 2009. Summary of changes for version 20091214:
6722 1) ACPI CA Core Subsystem:
6724 Enhanced automatic data type conversions for predefined name repairs.
6726 change expands the automatic repairs/conversions for predefined name
6728 values to make Integers, Strings, and Buffers fully interchangeable.
6731 Buffer can be converted to a Package of Integers if necessary. The
6733 module was completely restructured. Lin Ming, Bob Moore.
6735 Implemented automatic removal of null package elements during predefined
6737 repairs. This change will automatically remove embedded and trailing NULL
6738 package elements from returned package objects that are defined to
6741 variable number of sub-packages. The driver is then presented with a
6743 with no null elements to deal with. ACPICA BZ 819.
6745 Implemented a repair for the predefined _FDE and _GTM names. The expected
6746 return value for both names is a Buffer of 5 DWORDs. This repair fixes
6748 possible problems (both seen in the field), where a package of integers
6750 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
6753 Implemented additional module-level code support. This change will
6755 execute module-level code that is not at the root of the namespace (under
6757 Device object, etc.). Now executes the code within the current scope
6759 of the root. ACPICA BZ 762. Lin Ming.
6761 Fixed possible mutex acquisition errors when running _REG methods. Fixes
6763 problem where mutex errors can occur when running a _REG method that is
6765 the same scope as a method-defined operation region or an operation
6767 under a module-level IF block. This type of code is rare, so the problem
6769 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
6771 Fixed a possible memory leak during module-level code execution. An
6773 could be leaked for each block of executed module-level code if the
6774 interpreter slack mode is enabled This change deletes any implicitly
6776 object from the module-level code block. Lin Ming.
6778 Removed messages for successful predefined repair(s). The repair
6780 was considered too wordy. Now, messages are only unconditionally emitted
6782 the return object cannot be repaired. Existing messages for successful
6783 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
6786 Example Code and Data Size: These are the sizes for the OS-independent
6787 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6788 debug version of the code includes the debug output trace mechanism and
6790 much larger code and data size.
6793 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6794 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6796 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
6797 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
6799 2) iASL Compiler/Disassembler and Tools:
6801 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
6803 were no longer automatically removed at the termination of the compile.
6805 acpiexec: Implemented the -f option to specify default region fill value.
6806 This option specifies the value used to initialize buffers that simulate
6807 operation regions. Default value is zero. Useful for debugging problems
6809 depend on a specific initial value for a region or field.
6811 ----------------------------------------
6812 12 November 2009. Summary of changes for version 20091112:
6814 1) ACPI CA Core Subsystem:
6816 Implemented a post-order callback to AcpiWalkNamespace. The existing
6817 interface only has a pre-order callback. This change adds an additional
6818 parameter for a post-order callback which will be more useful for bus
6820 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
6822 Modified the behavior of the operation region memory mapping cache for
6823 SystemMemory. Ensure that the memory mappings created for operation
6825 do not cross 4K page boundaries. Crossing a page boundary while mapping
6826 regions can cause kernel warnings on some hosts if the pages have
6828 attributes. Such regions are probably BIOS bugs, and this is the
6830 Linux BZ 14445. Lin Ming.
6832 Implemented an automatic repair for predefined methods that must return
6833 sorted lists. This change will repair (by sorting) packages returned by
6835 _PSS, and _TSS. Drivers can now assume that the packages are correctly
6837 and do not contain NULL package elements. Adds one new file,
6838 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
6840 Fixed a possible fault during predefined name validation if a return
6842 object contains NULL elements. Also adds a warning if a NULL element is
6843 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
6845 include repair or removal of all such NULL elements where possible.
6847 Implemented additional module-level executable AML code support. This
6849 will execute module-level code that is not at the root of the namespace
6850 (under a Device object, etc.) at table load time. Module-level executable
6852 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
6854 Implemented a new internal function to create Integer objects. This
6856 simplifies miscellaneous object creation code. ACPICA BZ 823.
6858 Reduced the severity of predefined repair messages, Warning to Info.
6860 the object was successfully repaired, a warning is too severe. Reduced to
6862 info message for now. These messages may eventually be changed to debug-
6866 Example Code and Data Size: These are the sizes for the OS-independent
6867 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6868 debug version of the code includes the debug output trace mechanism and
6870 much larger code and data size.
6873 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6874 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6876 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
6877 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
6879 2) iASL Compiler/Disassembler and Tools:
6881 iASL: Implemented Switch() with While(1) so that Break works correctly.
6883 change correctly implements the Switch operator with a surrounding
6885 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
6887 iASL: Added a message if a package initializer list is shorter than
6889 length. Adds a new remark for a Package() declaration if an initializer
6891 exists, but is shorter than the declared length of the package. Although
6892 technically legal, this is probably a coding error and it is seen in the
6893 field. ACPICA BZ 815. Lin Ming, Bob Moore.
6895 iASL: Fixed a problem where the compiler could fault after the maximum
6897 of errors was reached (200).
6899 acpixtract: Fixed a possible warning for pointer cast if the compiler
6901 level set very high.
6903 ----------------------------------------
6904 13 October 2009. Summary of changes for version 20091013:
6906 1) ACPI CA Core Subsystem:
6908 Fixed a problem where an Operation Region _REG method could be executed
6910 than once. If a custom address space handler is installed by the host
6912 the "initialize operation regions" phase of the ACPICA initialization,
6914 _REG methods for that address space could be executed twice. This change
6915 fixes the problem. ACPICA BZ 427. Lin Ming.
6917 Fixed a possible memory leak for the Scope() ASL operator. When the exact
6918 invocation of "Scope(\)" is executed (change scope to root), one internal
6919 operand object was leaked. Lin Ming.
6921 Implemented a run-time repair for the _MAT predefined method. If the _MAT
6922 return value is defined as a Field object in the AML, and the field
6923 size is less than or equal to the default width of an integer (32 or
6925 can incorrectly return an Integer instead of a Buffer. ACPICA now
6926 automatically repairs this problem. ACPICA BZ 810.
6928 Implemented a run-time repair for the _BIF and _BIX predefined methods.
6930 "OEM Information" field is often incorrectly returned as an Integer with
6931 value zero if the field is not supported by the platform. This is due to
6933 ambiguity in the ACPI specification. The field should always be a string.
6934 ACPICA now automatically repairs this problem by returning a NULL string
6935 within the returned Package. ACPICA BZ 807.
6937 Example Code and Data Size: These are the sizes for the OS-independent
6938 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6939 debug version of the code includes the debug output trace mechanism and
6941 much larger code and data size.
6944 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
6945 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
6947 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
6948 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
6950 2) iASL Compiler/Disassembler and Tools:
6952 Disassembler: Fixed a problem where references to external symbols that
6953 contained one or more parent-prefixes (carats) were not handled
6955 possibly causing a fault. ACPICA BZ 806. Lin Ming.
6957 Disassembler: Restructured the code so that all functions that handle
6958 external symbols are in a single module. One new file is added,
6961 AML Debugger: Added a max count argument for the Batch command (which
6962 executes multiple predefined methods within the namespace.)
6964 iASL: Updated the compiler documentation (User Reference.) Available at
6965 http://www.acpica.org/documentation/. ACPICA BZ 750.
6967 AcpiXtract: Updated for Lint and other formatting changes. Close all open
6970 ----------------------------------------
6971 03 September 2009. Summary of changes for version 20090903:
6973 1) ACPI CA Core Subsystem:
6975 For Windows Vista compatibility, added the automatic execution of an _INI
6976 method located at the namespace root (\_INI). This method is executed at
6977 table load time. This support is in addition to the automatic execution
6979 \_SB._INI. Lin Ming.
6981 Fixed a possible memory leak in the interpreter for AML package objects
6983 the package initializer list is longer than the defined size of the
6985 This apparently can only happen if the BIOS changes the package size on
6987 fly (seen in a _PSS object), as ASL compilers do not allow this. The
6988 interpreter will truncate the package to the defined size (and issue an
6990 message), but previously could leave the extra objects undeleted if they
6992 pre-created during the argument processing (such is the case if the
6994 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
6996 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
6997 This has been reported in the field. Previously, ACPICA would zero out
6999 buffer/string. Now, the operation is treated as a noop. Provides Windows
7000 compatibility. ACPICA BZ 803. Lin Ming.
7002 Removed an extraneous error message for ASL constructs of the form
7003 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
7005 are seen in many BIOSs and are once again treated as NOOPs and no error
7007 emitted when they are encountered. ACPICA BZ 785.
7009 Fixed an extraneous warning message if a _DSM reserved method returns a
7010 Package object. _DSM can return any type of object, so validation on the
7011 return type cannot be performed. ACPICA BZ 802.
7013 Example Code and Data Size: These are the sizes for the OS-independent
7014 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7015 debug version of the code includes the debug output trace mechanism and
7017 much larger code and data size.
7020 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7021 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7023 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
7024 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
7026 2) iASL Compiler/Disassembler and Tools:
7028 iASL: Fixed a problem with the use of the Alias operator and Resource
7029 Templates. The correct alias is now constructed and no error is emitted.
7032 iASL: Implemented the -I option to specify additional search directories
7034 include files. Allows multiple additional search paths for include files.
7035 Directories are searched in the order specified on the command line
7037 the local directory is searched.) ACPICA BZ 800.
7039 iASL: Fixed a problem where the full pathname for include files was not
7040 emitted for warnings/errors. This caused the IDE support to not work
7041 properly. ACPICA BZ 765.
7043 iASL: Implemented the -@ option to specify a Windows-style response file
7044 containing additional command line options. ACPICA BZ 801.
7046 AcpiExec: Added support to load multiple AML files simultaneously (such
7049 DSDT and multiple SSDTs). Also added support for wildcards within the AML
7050 pathname. These features allow all machine tables to be easily loaded and
7051 debugged together. ACPICA BZ 804.
7053 Disassembler: Added missing support for disassembly of HEST table Error
7057 ----------------------------------------
7058 30 July 2009. Summary of changes for version 20090730:
7060 The ACPI 4.0 implementation for ACPICA is complete with this release.
7062 1) ACPI CA Core Subsystem:
7064 ACPI 4.0: Added header file support for all new and changed ACPI tables.
7065 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
7067 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
7069 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
7071 have been some ACPI 4.0 changes to other existing tables. Split the large
7072 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
7074 ACPI 4.0: Implemented predefined name validation for all new names. There
7076 31 new names in ACPI 4.0. The predefined validation module was split into
7078 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
7080 Implemented support for so-called "module-level executable code". This is
7081 executable AML code that exists outside of any control method and is
7083 to be executed at table load time. Although illegal since ACPI 2.0, this
7085 of code still exists and is apparently still being created. Blocks of
7087 code are now detected and executed as intended. Currently, the code
7089 must exist under either an If, Else, or While construct; these are the
7090 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
7092 Implemented an automatic dynamic repair for predefined names that return
7093 nested Package objects. This applies to predefined names that are defined
7095 return a variable-length Package of sub-packages. If the number of sub-
7096 packages is one, BIOS code is occasionally seen that creates a simple
7098 package with no sub-packages. This code attempts to fix the problem by
7099 wrapping a new package object around the existing package. These methods
7101 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
7105 Fixed a regression introduced in 20090625 for the AcpiGetDevices
7107 The _HID/_CID matching was broken and no longer matched IDs correctly.
7111 Fixed a problem with AcpiReset where the reset would silently fail if the
7112 register was one of the protected I/O ports. AcpiReset now bypasses the
7114 validation mechanism. This may eventually be driven into the
7118 Fixed a regression related to the recent update of the AcpiRead/Write
7119 interfaces. A sleep/suspend could fail if the optional PM2 Control
7121 does not exist during an attempt to write the Bus Master Arbitration bit.
7122 (However, some hosts already delete the code that writes this bit, and
7124 code may in fact be obsolete at this date.) ACPICA BZ 799.
7126 Fixed a problem where AcpiTerminate could fault if inadvertently called
7128 in succession. ACPICA BZ 795.
7130 Example Code and Data Size: These are the sizes for the OS-independent
7131 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7132 debug version of the code includes the debug output trace mechanism and
7134 much larger code and data size.
7137 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7138 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7140 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
7141 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
7143 2) iASL Compiler/Disassembler and Tools:
7145 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
7146 changes to existing tables. ACPICA BZ 775.
7148 ----------------------------------------
7149 25 June 2009. Summary of changes for version 20090625:
7151 The ACPI 4.0 Specification was released on June 16 and is available at
7152 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
7153 continue for the next few releases.
7155 1) ACPI CA Core Subsystem:
7157 ACPI 4.0: Implemented interpreter support for the IPMI operation region
7158 address space. Includes support for bi-directional data buffers and an
7160 address space handler (to be installed by an IPMI device driver.) ACPICA
7164 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
7166 support in both the header files and the disassembler.
7168 Completed a major update for the AcpiGetObjectInfo external interface.
7170 - Support for variable, unlimited length HID, UID, and CID strings.
7171 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
7173 - Call the _SxW power methods on behalf of a device object.
7174 - Determine if a device is a PCI root bridge.
7175 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
7176 These changes will require an update to all callers of this interface.
7178 the updated ACPICA Programmer Reference for details. One new source file
7180 been added - utilities/utids.c. ACPICA BZ 368, 780.
7182 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
7183 transfers. The Value parameter has been extended from 32 bits to 64 bits
7185 order to support new ACPI 4.0 tables. These changes will require an
7188 all callers of these interfaces. See the ACPICA Programmer Reference for
7189 details. ACPICA BZ 768.
7191 Fixed several problems with AcpiAttachData. The handler was not invoked
7193 the host node was deleted. The data sub-object was not automatically
7195 when the host node was deleted. The interface to the handler had an
7197 parameter, this was removed. ACPICA BZ 778.
7199 Enhanced the function that dumps ACPI table headers. All non-printable
7200 characters in the string fields are now replaced with '?' (Signature,
7202 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
7203 these fields are occasionally seen in the field. ACPICA BZ 788.
7205 Fixed a problem with predefined method repair code where the code that
7206 attempts to repair/convert an object of incorrect type is only executed
7208 the first time the predefined method is called. The mechanism that
7210 warnings on subsequent calls was interfering with the repair mechanism.
7213 Fixed a possible memory leak in the predefined validation/repair code
7216 buffer is automatically converted to an expected string object.
7218 Removed obsolete 16-bit files from the distribution and from the current
7220 tree head. ACPICA BZ 776.
7222 Example Code and Data Size: These are the sizes for the OS-independent
7223 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7224 debug version of the code includes the debug output trace mechanism and
7226 much larger code and data size.
7229 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7230 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7232 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
7233 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
7235 2) iASL Compiler/Disassembler and Tools:
7237 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
7238 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
7240 ACPI 4.0: iASL - implemented compile-time validation support for all new
7241 predefined names and control methods (31 total). ACPICA BZ 769.
7243 ----------------------------------------
7244 21 May 2009. Summary of changes for version 20090521:
7246 1) ACPI CA Core Subsystem:
7248 Disabled the preservation of the SCI enable bit in the PM1 control
7250 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
7253 a "preserved" bit - "OSPM always preserves this bit position", section
7254 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
7255 because the bit needs to be explicitly set by the OS as a workaround. No
7256 machines fail if the bit is not preserved. Therefore, ACPICA no longer
7257 attempts to preserve this bit.
7259 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
7260 incorrectly formed _PRT package could cause a fault. Added validation to
7261 ensure that each package element is actually a sub-package.
7263 Implemented a new interface to install or override a single control
7265 AcpiInstallMethod. This interface is useful when debugging in order to
7267 an existing method or to install a missing method without having to
7269 the entire ACPI table. See the ACPICA Programmer Reference for use and
7270 examples. Lin Ming, Bob Moore.
7272 Fixed several reference count issues with the DdbHandle object that is
7273 created from a Load or LoadTable operator. Prevent premature deletion of
7275 object. Also, mark the object as invalid once the table has been
7277 This is needed because the handle itself may not be deleted after the
7279 unload, depending on whether it has been stored in a named object by the
7282 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
7283 mutexes of the same sync level are acquired but then not released in
7285 opposite order, the internally maintained Current Sync Level becomes
7287 and can cause subsequent execution errors. ACPICA BZ 471.
7289 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
7290 specification has been changed to make the SyncLevel for mutex objects
7292 useful. When releasing a mutex, the SyncLevel of the mutex must now be
7294 same as the current sync level. This makes more sense than the previous
7296 (SyncLevel less than or equal). This change updates the code to match the
7299 Fixed a problem with the local version of the AcpiOsPurgeCache function.
7301 (local) cache must be locked during all cache object deletions. Andrew
7304 Updated the Load operator to use operation region interfaces. This
7306 direct memory mapping with region access calls. Now, all region accesses
7308 through the installed region handler as they should.
7310 Simplified and optimized the NsGetNextNode function. Reduced parameter
7312 and reduced code for this frequently used function.
7314 Example Code and Data Size: These are the sizes for the OS-independent
7315 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7316 debug version of the code includes the debug output trace mechanism and
7318 much larger code and data size.
7321 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7322 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7324 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
7325 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
7327 2) iASL Compiler/Disassembler and Tools:
7329 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
7331 with sub-table disassembly and handling invalid sub-tables. Attempt
7333 after an invalid sub-table ID.
7335 ----------------------------------------
7336 22 April 2009. Summary of changes for version 20090422:
7338 1) ACPI CA Core Subsystem:
7340 Fixed a compatibility issue with the recently released I/O port
7342 mechanism. For windows compatibility, 1) On a port protection violation,
7343 simply ignore the request and do not return an exception (allow the
7345 method to continue execution.) 2) If only part of the request overlaps a
7346 protected port, read/write the individual ports that are not protected.
7350 Enhanced the execution of the ASL/AML BreakPoint operator so that it
7352 breaks into the AML debugger if the debugger is present. This matches the
7353 ACPI-defined behavior.
7355 Fixed several possible warnings related to the use of the configurable
7356 ACPI_THREAD_ID. This type can now be configured as either an integer or a
7357 pointer with no warnings. Also fixes several warnings in printf-like
7358 statements for the 64-bit build when the type is configured as a pointer.
7361 Fixed a number of possible warnings when compiling with gcc 4+ (depending
7363 warning options.) Examples include printf formats, aliasing, unused
7365 missing prototypes, missing switch default statements, use of non-ANSI
7366 library functions, use of non-ANSI constructs. See generate/unix/Makefile
7368 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
7370 Example Code and Data Size: These are the sizes for the OS-independent
7371 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7372 debug version of the code includes the debug output trace mechanism and
7374 much larger code and data size.
7377 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7378 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7380 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
7381 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
7383 2) iASL Compiler/Disassembler and Tools:
7385 iASL: Fixed a generation warning from Bison 2.3 and fixed several
7390 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
7392 correctly digest Windows/DOS formatted files (with CR/LF).
7394 iASL: Added a new option for "quiet mode" (-va) that produces only the
7395 compilation summary, not individual errors and warnings. Useful for large
7398 AcpiExec: Implemented a new option (-z) to enable a forced
7400 timeout that can be used to detect hang conditions during execution of
7402 code (includes both internal semaphores and AML-defined mutexes and
7405 Added new makefiles for the generation of acpica in a generic unix-like
7406 environment. These makefiles are intended to generate the acpica tools
7408 utilities from the original acpica git source tree structure.
7410 Test Suites: Updated and cleaned up the documentation files. Updated the
7411 copyrights to 2009, affecting all source files. Use the new version of
7413 with quiet mode. Increased the number of available semaphores in the
7415 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
7417 an alternate implementation of the semaphore timeout to allow aslts to
7418 execute fully on Cygwin.
7420 ----------------------------------------
7421 20 March 2009. Summary of changes for version 20090320:
7423 1) ACPI CA Core Subsystem:
7425 Fixed a possible race condition between AcpiWalkNamespace and dynamic
7427 unloads. Added a reader/writer locking mechanism to allow multiple
7429 namespace walks (readers), but block a dynamic table unload until it can
7431 exclusive write access to the namespace. This fixes a problem where a
7433 unload could (possibly catastrophically) delete the portion of the
7435 that is currently being examined by a walk. Adds a new file, utlock.c,
7437 implements the reader/writer lock mechanism. ACPICA BZ 749.
7439 Fixed a regression introduced in version 20090220 where a change to the
7441 handling could cause the ACPICA subsystem to access non-existent I/O
7444 Modified the handling of FADT register and table (FACS/DSDT) addresses.
7446 FADT can contain both 32-bit and 64-bit versions of these addresses.
7447 Previously, the 64-bit versions were favored, meaning that if both 32 and
7449 versions were valid, but not equal, the 64-bit version was used. This was
7450 found to cause some machines to fail. Now, in this case, the 32-bit
7452 is used instead. This now matches the Windows behavior.
7454 Implemented a new mechanism to protect certain I/O ports. Provides
7456 compatibility and protects the standard PC I/O ports from access via AML
7457 code. Adds a new file, hwvalid.c
7459 Fixed a possible extraneous warning message from the FADT support. The
7460 message warns of a 32/64 length mismatch between the legacy and GAS
7461 definitions for a register.
7463 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
7465 made obsolete by the port protection mechanism above. It was previously
7467 to validate the entire address range of an operation region, which could
7469 incorrect if the range included illegal ports, but fields within the
7470 operation region did not actually access those ports. Validation is now
7471 performed on a per-field basis instead of the entire region.
7473 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
7474 Ignored bits must be "preserved" according to the ACPI spec. Usually,
7476 means a read/modify/write when writing to the register. However, for
7478 registers, writing a one means clear the event. Writing a zero means
7480 the event (do not clear.) This behavior is clarified in the ACPI 4.0
7482 and the ACPICA code now simply always writes a zero to the ignored bit.
7484 Modified the handling of ignored bits for the PM1 A/B Control Registers.
7486 per the ACPI specification, for the control registers, preserve
7487 (read/modify/write) all bits that are defined as either reserved or
7490 Updated the handling of write-only bits in the PM1 A/B Control Registers.
7491 When reading the register, zero the write-only bits as per the ACPI spec.
7492 ACPICA BZ 443. Lin Ming.
7494 Removed "Linux" from the list of supported _OSI strings. Linux no longer
7495 wants to reply true to this request. The Windows strings are the only
7497 through the AML that are tested and known to work properly.
7500 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7501 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7503 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
7504 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
7506 2) iASL Compiler/Disassembler and Tools:
7508 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
7512 ----------------------------------------
7513 20 February 2009. Summary of changes for version 20090220:
7515 1) ACPI CA Core Subsystem:
7517 Optimized the ACPI register locking. Removed locking for reads from the
7519 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
7521 not required when reading the single-bit registers. The
7522 AcpiGetRegisterUnlocked function is no longer needed and has been
7524 This will improve performance for reads on these registers. ACPICA BZ
7527 Fixed the parameter validation for AcpiRead/Write. Now return
7528 AE_BAD_PARAMETER if the input register pointer is null, and
7531 the register has an address of zero. Previously, these cases simply
7533 AE_OK. For optional registers such as PM1B status/enable/control, the
7535 should check for a valid register address before calling. ACPICA BZ 748.
7537 Renamed the external ACPI bit register access functions. Renamed
7538 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
7539 functions. The new names are AcpiReadBitRegister and
7540 AcpiWriteBitRegister.
7541 Also, restructured the code for these functions by simplifying the code
7543 and condensing duplicate code to reduce code size.
7545 Added new functions to transparently handle the possibly split PM1 A/B
7546 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
7548 now handle the split registers for PM1 Status, Enable, and Control.
7553 Added a function to handle the PM1 control registers,
7554 AcpiHwWritePm1Control.
7555 This function writes both of the PM1 control registers (A/B). These
7557 are different than the PM1 A/B status and enable registers in that
7559 values can be written to the A/B registers. Most notably, the SLP_TYP
7561 can be different, as per the values returned from the _Sx predefined
7564 Removed an extra register write within AcpiHwClearAcpiStatus. This
7566 was writing an optional PM1B status register twice. The existing call to
7568 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
7570 register. ACPICA BZ 751.
7572 Split out the PM1 Status registers from the FADT. Added new globals for
7574 registers (A/B), similar to the way the PM1 Enable registers are handled.
7575 Instead of overloading the FADT Event Register blocks. This makes the
7577 clearer and less prone to error.
7579 Fixed the warning message for when the platform contains too many ACPI
7581 for the default size of the global root table data structure. The
7583 for the truncation value was incorrect.
7585 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
7586 obsolete macro, since it is now a simple reference to ->common.type.
7588 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
7590 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
7591 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
7592 simply SLEEP_TYPE. ACPICA BZ 754.
7594 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
7595 function is only needed on 64-bit host operating systems and is thus not
7596 included for 32-bit hosts.
7598 Debug output: print the input and result for invocations of the _OSI
7600 control method via the ACPI_LV_INFO debug level. Also, reduced some of
7602 verbosity of this debug level. Len Brown.
7604 Example Code and Data Size: These are the sizes for the OS-independent
7605 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7606 debug version of the code includes the debug output trace mechanism and
7608 much larger code and data size.
7611 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7612 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7614 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
7615 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
7617 2) iASL Compiler/Disassembler and Tools:
7619 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
7620 various legal performance profiles.
7622 ----------------------------------------
7623 23 January 2009. Summary of changes for version 20090123:
7625 1) ACPI CA Core Subsystem:
7627 Added the 2009 copyright to all module headers and signons. This affects
7628 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7629 the tools/utilities.
7631 Implemented a change to allow the host to override any ACPI table,
7633 dynamically loaded tables. Previously, only the DSDT could be replaced by
7635 host. With this change, the AcpiOsTableOverride interface is called for
7637 table found in the RSDT/XSDT during ACPICA initialization, and also
7639 a table is dynamically loaded via the AML Load operator.
7641 Updated FADT flag definitions, especially the Boot Architecture flags.
7643 Debugger: For the Find command, automatically pad the input ACPI name
7645 underscores if the name is shorter than 4 characters. This enables a
7647 with the actual namespace entry which is itself padded with underscores.
7649 Example Code and Data Size: These are the sizes for the OS-independent
7650 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7651 debug version of the code includes the debug output trace mechanism and
7653 much larger code and data size.
7656 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7657 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7659 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
7660 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
7662 2) iASL Compiler/Disassembler and Tools:
7664 Fix build error under Bison-2.4.
7666 Dissasembler: Enhanced FADT support. Added decoding of the Boot
7668 flags. Now decode all flags, regardless of the FADT version. Flag output
7669 includes the FADT version which first defined each flag.
7671 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
7673 DSDT). Windows only.
7675 ----------------------------------------
7676 04 December 2008. Summary of changes for version 20081204:
7678 1) ACPI CA Core Subsystem:
7680 The ACPICA Programmer Reference has been completely updated and revamped
7682 this release. This includes updates to the external interfaces, OSL
7683 interfaces, the overview sections, and the debugger reference.
7685 Several new ACPICA interfaces have been implemented and documented in the
7686 programmer reference:
7687 AcpiReset - Writes the reset value to the FADT-defined reset register.
7688 AcpiDisableAllGpes - Disable all available GPEs.
7689 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
7690 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
7691 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
7692 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
7693 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
7695 Most of the public ACPI hardware-related interfaces have been moved to a
7697 file, components/hardware/hwxface.c
7699 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
7700 register lengths within the FADT are now used, and the low level ACPI
7701 register access no longer hardcodes the ACPI register lengths. Given that
7702 there may be some risk in actually trusting the FADT register lengths, a
7704 time option was added to fall back to the default hardcoded lengths if
7706 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
7707 option is set to true for now, and a warning is issued if a suspicious
7709 register length is overridden with the default value.
7711 Fixed a reference count issue in NsRepairObject. This problem was
7713 in version 20081031 as part of a fix to repair Buffer objects within
7716 Added semaphore support to the Linux/Unix application OS-services layer
7717 (OSL). ACPICA BZ 448. Lin Ming.
7719 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
7721 be implemented in the OSL, or will binary semaphores be used instead.
7723 Example Code and Data Size: These are the sizes for the OS-independent
7724 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7725 debug version of the code includes the debug output trace mechanism and
7727 much larger code and data size.
7730 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7731 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7733 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
7734 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
7736 2) iASL Compiler/Disassembler and Tools:
7738 iASL: Completed the '-e' option to include additional ACPI tables in
7741 aid with disassembly and External statement generation. ACPICA BZ 742.
7745 iASL: Removed the "named object in while loop" error. The compiler cannot
7746 determine how many times a loop will execute. ACPICA BZ 730.
7748 Disassembler: Implemented support for FADT revision 2 (MS extension).
7752 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
7755 ----------------------------------------
7756 31 October 2008. Summary of changes for version 20081031:
7758 1) ACPI CA Core Subsystem:
7760 Restructured the ACPICA header files into public/private. acpi.h now
7762 only the "public" acpica headers. All other acpica headers are "private"
7764 should not be included by acpica users. One new file, accommon.h is used
7766 include the commonly used private headers for acpica code generation.
7768 plans include moving all private headers to a new subdirectory.
7770 Implemented an automatic Buffer->String return value conversion for
7771 predefined ACPI methods. For these methods (such as _BIF), added
7773 conversion for return objects that are required to be a String, but a
7775 was found instead. This can happen when reading string battery data from
7777 operation region, because it used to be difficult to convert the data
7779 buffer to string from within the ASL. Ensures that the host OS is
7781 with a valid null-terminated string. Linux BZ 11822.
7783 Updated the FACS waking vector interfaces. Split
7784 AcpiSetFirmwareWakingVector
7785 into two: one for the 32-bit vector, another for the 64-bit vector. This
7787 required because the host OS must setup the wake much differently for
7789 vector (real vs. protected mode, etc.) and the interface itself should
7792 deciding which vector to use. Also, eliminated the
7793 GetFirmwareWakingVector
7794 interface, as it served no purpose (only the firmware reads the vector,
7796 only writes the vector.) ACPICA BZ 731.
7798 Implemented a mechanism to escape infinite AML While() loops. Added a
7800 counter to force exit from AML While loops if the count becomes too
7802 This can occur in poorly written AML when the hardware does not respond
7803 within a while loop and the loop does not implement a timeout. The
7805 loop count is configurable. A new exception code is returned when a loop
7807 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
7809 Optimized the execution of AML While loops. Previously, a control state
7810 object was allocated and freed for each execution of the loop. The
7811 optimization is to simply reuse the control state for each iteration.
7813 speeds up the raw loop execution time by about 5%.
7815 Enhanced the implicit return mechanism. For Windows compatibility, return
7817 implicit integer of value zero for methods that contain no executable
7819 Such methods are seen in the field as stubs (presumably), and can cause
7820 drivers to fail if they expect a return value. Lin Ming.
7822 Allow multiple backslashes as root prefixes in namepaths. In a fully
7823 qualified namepath, allow multiple backslash prefixes. This can happen
7825 is seen in the field) because of the use of a double-backslash in strings
7826 (since backslash is the escape character) causing confusion. ACPICA BZ
7830 Emit a warning if two different FACS or DSDT tables are discovered in the
7831 FADT. Checks if there are two valid but different addresses for the FACS
7833 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
7835 Consolidated the method argument count validation code. Merged the code
7837 validates control method argument counts into the predefined validation
7838 module. Eliminates possible multiple warnings for incorrect argument
7841 Implemented ACPICA example code. Includes code for ACPICA initialization,
7842 handler installation, and calling a control method. Available at
7843 source/tools/examples.
7845 Added a global pointer for FACS table to simplify internal FACS access.
7847 the global pointer instead of using AcpiGetTableByIndex for each FACS
7849 This simplifies the code for the Global Lock and the Firmware Waking
7852 Example Code and Data Size: These are the sizes for the OS-independent
7853 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7854 debug version of the code includes the debug output trace mechanism and
7856 much larger code and data size.
7859 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7860 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7862 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
7863 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
7865 2) iASL Compiler/Disassembler and Tools:
7867 iASL: Improved disassembly of external method calls. Added the -e option
7869 allow the inclusion of additional ACPI tables to help with the
7872 method invocations and the generation of external declarations during the
7873 disassembly. Certain external method invocations cannot be disassembled
7874 properly without the actual declaration of the method. Use the -e option
7876 include the table where the external method(s) are actually declared.
7878 useful for disassembling SSDTs that make method calls back to the master
7879 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
7881 -e dsdt.aml ssdt1.aml
7883 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
7884 problem where the use of an alias within a namepath would result in a not
7885 found error or cause the compiler to fault. Also now allows forward
7886 references from the Alias operator itself. ACPICA BZ 738.
7888 ----------------------------------------
7889 26 September 2008. Summary of changes for version 20080926:
7891 1) ACPI CA Core Subsystem:
7893 Designed and implemented a mechanism to validate predefined ACPI methods
7895 objects. This code validates the predefined ACPI objects (objects whose
7897 start with underscore) that appear in the namespace, at the time they are
7898 evaluated. The argument count and the type of the returned object are
7899 validated against the ACPI specification. The purpose of this validation
7901 to detect problems with the BIOS-implemented predefined ACPI objects
7903 the results are returned to the ACPI-related drivers. Future enhancements
7905 include actual repair of incorrect return objects where possible. Two new
7906 files are nspredef.c and acpredef.h.
7908 Fixed a fault in the AML parser if a memory allocation fails during the
7910 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
7912 Fixed an issue with implicit return compatibility. This change improves
7914 implicit return mechanism to be more compatible with the MS interpreter.
7916 Ming, ACPICA BZ 349.
7918 Implemented support for zero-length buffer-to-string conversions. Allow
7920 length strings during interpreter buffer-to-string conversions. For
7922 during the ToDecimalString and ToHexString operators, as well as implicit
7923 conversions. Fiodor Suietov, ACPICA BZ 585.
7925 Fixed two possible memory leaks in the error exit paths of
7926 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
7928 similar in that they use a stack of state objects in order to eliminate
7929 recursion. The stack must be fully unwound and deallocated if an error
7930 occurs. Lin Ming. ACPICA BZ 383.
7932 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
7934 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
7935 Moore ACPICA BZ 442.
7937 Removed the obsolete version number in module headers. Removed the
7938 "$Revision" number that appeared in each module header. This version
7940 was useful under SourceSafe and CVS, but has no meaning under git. It is
7942 only incorrect, it could also be misleading.
7944 Example Code and Data Size: These are the sizes for the OS-independent
7945 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7946 debug version of the code includes the debug output trace mechanism and
7948 much larger code and data size.
7951 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
7952 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
7954 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
7955 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
7957 ----------------------------------------
7958 29 August 2008. Summary of changes for version 20080829:
7960 1) ACPI CA Core Subsystem:
7962 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
7963 Reference. Changes include the elimination of cheating on the Object
7965 for the DdbHandle subtype, addition of a reference class field to
7966 differentiate the various reference types (instead of an AML opcode), and
7968 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
7970 Reduce an error to a warning for an incorrect method argument count.
7971 Previously aborted with an error if too few arguments were passed to a
7972 control method via the external ACPICA interface. Now issue a warning
7974 and continue. Handles the case where the method inadvertently declares
7976 many arguments, but does not actually use the extra ones. Applies mainly
7978 the predefined methods. Lin Ming. Linux BZ 11032.
7980 Disallow the evaluation of named object types with no intrinsic value.
7982 AE_TYPE for objects that have no value and therefore evaluation is
7984 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
7986 these types were allowed, but an exception would be generated at some
7988 during the evaluation. Now, the error is generated up front.
7990 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
7991 (nsnames.c). Fixes a leak in the error exit path.
7993 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
7995 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
7997 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
8000 Removed obsolete and/or unused exception codes from the acexcep.h header.
8001 There is the possibility that certain device drivers may be affected if
8003 use any of these exceptions.
8005 The ACPICA documentation has been added to the public git source tree,
8007 acpica/documents. Included are the ACPICA programmer reference, the iASL
8008 compiler reference, and the changes.txt release logfile.
8010 Example Code and Data Size: These are the sizes for the OS-independent
8011 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8012 debug version of the code includes the debug output trace mechanism and
8014 much larger code and data size.
8017 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8018 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8020 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8021 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
8023 2) iASL Compiler/Disassembler and Tools:
8025 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
8026 defines _SCP with 3 arguments. Previous versions defined it with only 1
8027 argument. iASL now allows both definitions.
8029 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
8031 length subtables when disassembling ACPI tables. Also fixed a couple of
8032 errors where a full 16-bit table type field was not extracted from the
8036 acpisrc: Improve comment counting mechanism for generating source code
8037 statistics. Count first and last lines of multi-line comments as
8039 not comment lines. Handle Linux legal header in addition to standard
8043 ----------------------------------------
8045 29 July 2008. Summary of changes for version 20080729:
8047 1) ACPI CA Core Subsystem:
8049 Fix a possible deadlock in the GPE dispatch. Remove call to
8050 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
8052 to acquire the GPE lock but can deadlock since the GPE lock is already
8054 at dispatch time. This code was introduced in version 20060831 as a
8056 to Linux BZ 6881 and has since been removed from Linux.
8058 Add a function to dereference returned reference objects. Examines the
8060 object from a call to AcpiEvaluateObject. Any Index or RefOf references
8062 automatically dereferenced in an attempt to return something useful
8064 reference types cannot be converted into an external ACPI_OBJECT.)
8066 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
8068 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
8069 subtables for the MADT and one new subtable for the SRAT. Includes
8070 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
8072 Specification, June 2008.
8074 Additional error checking for pathname utilities. Add error check after
8076 calls to AcpiNsGetPathnameLength. Add status return from
8077 AcpiNsBuildExternalPath and check after all calls. Add parameter
8079 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
8081 Return status from the global init function AcpiUtGlobalInitialize. This
8083 used by both the kernel subsystem and the utilities such as iASL
8085 The function could possibly fail when the caches are initialized. Yang
8088 Add a function to decode reference object types to strings. Created for
8089 improved error messages.
8091 Improve object conversion error messages. Better error messages during
8093 conversion from internal to the external ACPI_OBJECT. Used for external
8095 to AcpiEvaluateObject.
8097 Example Code and Data Size: These are the sizes for the OS-independent
8098 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8099 debug version of the code includes the debug output trace mechanism and
8101 much larger code and data size.
8104 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8105 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8107 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
8108 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
8110 2) iASL Compiler/Disassembler and Tools:
8112 Debugger: fix a possible hang when evaluating non-methods. Fixes a
8114 introduced in version 20080701. If the object being evaluated (via
8116 command) is not a method, the debugger can hang while trying to obtain
8118 existent parameters.
8120 iASL: relax error for using reserved "_T_x" identifiers. These names can
8121 appear in a disassembled ASL file if they were emitted by the original
8122 compiler. Instead of issuing an error or warning and forcing the user to
8123 manually change these names, issue a remark instead.
8125 iASL: error if named object created in while loop. Emit an error if any
8127 object is created within a While loop. If allowed, this code will
8130 run-time error on the second iteration of the loop when an attempt is
8133 create the same named object twice. ACPICA bugzilla 730.
8135 iASL: Support absolute pathnames for include files. Add support for
8137 pathnames within the Include operator. previously, only relative
8141 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
8143 The ACPI spec requires one interrupt minimum. BZ 423
8145 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
8146 Handles the case for the Interrupt Resource Descriptor where
8147 the ResourceSource argument is omitted but ResourceSourceIndex
8148 is present. Now leave room for the Index. BZ 426
8150 iASL: Prevent error message if CondRefOf target does not exist. Fixes
8152 where an error message is emitted if the target does not exist. BZ 516
8154 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
8155 (get ACPI tables on Windows). This was apparently broken in version
8158 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
8160 the EOF happens immediately after the last table in the input file. Print
8161 completion message. Previously, no message was displayed in this case.
8163 ----------------------------------------
8164 01 July 2008. Summary of changes for version 20080701:
8166 0) Git source tree / acpica.org
8168 Fixed a problem where a git-clone from http would not transfer the entire
8171 1) ACPI CA Core Subsystem:
8173 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
8174 enable bit. Now performs a read-change-write of the enable register
8176 of simply writing out the cached enable mask. This will prevent
8178 enabling of GPEs if a rogue GPE is received during initialization (before
8180 handlers are installed.)
8182 Implemented a copy for dynamically loaded tables. Previously, dynamically
8183 loaded tables were simply mapped - but on some machines this memory is
8184 corrupted after suspend. Now copy the table to a local buffer. For the
8185 OpRegion case, added checksum verify. Use the table length from the table
8186 header, not the region length. For the Buffer case, use the table length
8187 also. Dennis Noordsij, Bob Moore. BZ 10734
8189 Fixed a problem where the same ACPI table could not be dynamically loaded
8191 unloaded more than once. Without this change, a table cannot be loaded
8193 once it has been loaded/unloaded one time. The current mechanism does not
8194 unregister a table upon an unload. During a load, if the same table is
8196 this no longer returns an exception. BZ 722
8198 Fixed a problem where the wrong descriptor length was calculated for the
8199 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
8201 are calculated as 12 bytes long, but the actual length in the internal
8202 descriptor is 16 because of the round-up to 8 on the 64-bit build.
8204 by Linn Crosetto. BZ 728
8206 Fixed a possible memory leak in the Unload operator. The DdbHandle
8208 by Load() did not have its reference count decremented during unload,
8210 to a memory leak. Lin Ming. BZ 727
8212 Fixed a possible memory leak when deleting thermal/processor objects. Any
8213 associated notify handlers (and objects) were not being deleted. Fiodor
8216 Fixed the ordering of the ASCII names in the global mutex table to match
8218 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
8220 Vegard Nossum. BZ 726
8222 Enhanced the AcpiGetObjectInfo interface to return the number of required
8223 arguments if the object is a control method. Added this call to the
8225 so the proper number of default arguments are passed to a method. This
8226 prevents a warning when executing methods from AcpiExec.
8228 Added a check for an invalid handle in AcpiGetObjectInfo. Return
8229 AE_BAD_PARAMETER if input handle is invalid. BZ 474
8231 Fixed an extraneous warning from exconfig.c on the 64-bit build.
8233 Example Code and Data Size: These are the sizes for the OS-independent
8234 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8235 debug version of the code includes the debug output trace mechanism and
8237 much larger code and data size.
8240 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8241 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8243 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
8244 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
8246 2) iASL Compiler/Disassembler and Tools:
8248 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
8249 resource descriptor names.
8251 iASL: Detect invalid ASCII characters in input (windows version). Removed
8253 "-CF" flag from the flex compile, enables correct detection of non-ASCII
8254 characters in the input. BZ 441
8256 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
8258 "result of operation not used" warning when the DDB handle returned from
8259 LoadTable is not used. The warning is not needed. BZ 590
8261 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
8264 pass address of table to the AML. Added option to disable OpRegion
8266 to allow creation of an OpRegion with a real address that was passed to
8268 All of this allows testing of the Load and Unload operators from
8271 Debugger: update tables command for unloaded tables. Handle unloaded
8273 and use the standard table header output routine.
8275 ----------------------------------------
8276 09 June 2008. Summary of changes for version 20080609:
8278 1) ACPI CA Core Subsystem:
8280 Implemented a workaround for reversed _PRT entries. A significant number
8282 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
8283 change dynamically detects and repairs this problem. Provides
8285 with MS ACPI. BZ 6859
8287 Simplified the internal ACPI hardware interfaces to eliminate the locking
8288 flag parameter from Register Read/Write. Added a new external interface,
8289 AcpiGetRegisterUnlocked.
8291 Fixed a problem where the invocation of a GPE control method could hang.
8293 was a regression introduced in 20080514. The new method argument count
8294 validation mechanism can enter an infinite loop when a GPE method is
8295 dispatched. Problem fixed by removing the obsolete code that passed GPE
8297 information to the notify handler via the control method parameter
8300 Fixed a problem where the _SST execution status was incorrectly returned
8302 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
8304 20080514. _SST is optional and a NOT_FOUND exception should never be
8307 Fixed a problem where a deleted object could be accessed from within the
8309 parser. This was a regression introduced in version 20080123 as a fix for
8311 Unload operator. Lin Ming. BZ 10669
8313 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
8315 and eliminated the use of a negative index in a loop. Operands are now
8316 displayed in the correct order, not backwards. This also fixes a
8318 introduced in 20080514 on 64-bit systems where the elimination of
8319 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
8322 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
8324 path did not delete a locally allocated structure.
8326 Updated definitions for the DMAR and SRAT tables to synchronize with the
8327 current specifications. Includes disassembler support.
8329 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
8330 loop termination value was used. Loop terminated on iteration early,
8332 one mutex. Linn Crosetto
8334 Example Code and Data Size: These are the sizes for the OS-independent
8335 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8336 debug version of the code includes the debug output trace mechanism and
8338 much larger code and data size.
8341 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8342 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8344 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
8345 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
8347 2) iASL Compiler/Disassembler and Tools:
8349 Disassembler: Implemented support for EisaId() within _CID objects. Now
8350 disassemble integer _CID objects back to EisaId invocations, including
8351 multiple integers within _CID packages. Includes single-step support for
8354 Disassembler: Added support for DMAR and SRAT table definition changes.
8356 ----------------------------------------
8357 14 May 2008. Summary of changes for version 20080514:
8359 1) ACPI CA Core Subsystem:
8361 Fixed a problem where GPEs were enabled too early during the ACPICA
8362 initialization. This could lead to "handler not installed" errors on some
8363 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
8365 ensures that all operation regions and devices throughout the namespace
8367 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
8369 Implemented a change to the enter sleep code. Moved execution of the _GTS
8370 method to just before setting sleep enable bit. The execution was moved
8372 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
8373 immediately before the SLP_EN bit is set, as per the ACPI specification.
8376 Implemented a fix to disable unknown GPEs (2nd version). Now always
8378 the GPE, even if ACPICA thinks that that it is already disabled. It is
8379 possible that the AML or some other code has enabled the GPE unbeknownst
8383 Fixed a problem with the Field operator where zero-length fields would
8385 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
8387 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
8389 Implemented a fix for the Load operator, now load the table at the
8391 root. This reverts a change introduced in version 20071019. The table is
8393 loaded at the namespace root even though this goes against the ACPI
8394 specification. This provides compatibility with other ACPI
8396 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
8399 Fixed a problem where ACPICA would not Load() tables with unusual
8401 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
8402 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
8403 Therefore, signature validation is worthless. Apparently MS ACPI accepts
8405 signatures, ACPICA must be compatible. BZ 10454.
8407 Fixed a possible negative array index in AcpiUtValidateException. Added
8409 fields to the exception string arrays to eliminate a -1 subtraction on
8413 Updated the debug tracking macros to reduce overall code and data size.
8414 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
8415 instead of pointers to static strings. Jan Beulich and Bob Moore.
8417 Implemented argument count checking in control method invocation via
8418 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
8420 many. This applies only to extern programmatic control method execution,
8422 method-to-method calls within the AML. Lin Ming.
8424 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
8426 longer needed, especially with the removal of 16-bit support. It was
8428 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
8431 32/64-bit platforms is required.
8433 Added the C const qualifier for appropriate string constants -- mostly
8434 MODULE_NAME and printf format strings. Jan Beulich.
8436 Example Code and Data Size: These are the sizes for the OS-independent
8437 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8438 debug version of the code includes the debug output trace mechanism and
8440 much larger code and data size.
8443 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8444 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8446 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
8447 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
8449 2) iASL Compiler/Disassembler and Tools:
8451 Implemented ACPI table revision ID validation in the disassembler. Zero
8453 always invalid. For DSDTs, the ID controls the interpreter integer width.
8455 means 32-bit and this is unusual. 2 or greater is 64-bit.
8457 ----------------------------------------
8458 21 March 2008. Summary of changes for version 20080321:
8460 1) ACPI CA Core Subsystem:
8462 Implemented an additional change to the GPE support in order to suppress
8463 spurious or stray GPEs. The AcpiEvDisableGpe function will now
8465 disable incoming GPEs that are neither enabled nor disabled -- meaning
8467 the GPE is unknown to the system. This should prevent future interrupt
8469 from that GPE. BZ 6217 (Zhang Rui)
8471 Fixed a problem where NULL package elements were not returned to the
8472 AcpiEvaluateObject interface correctly. The element was simply ignored
8473 instead of returning a NULL ACPI_OBJECT package element, potentially
8475 a buffer overflow and/or confusing the caller who expected a fixed number
8477 elements. BZ 10132 (Lin Ming, Bob Moore)
8479 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
8481 Qword), Field, BankField, and IndexField operators when invoked from
8483 an executing control method. In this case, these operators created
8485 nodes that were incorrectly left marked as permanent nodes instead of
8486 temporary nodes. This could cause a problem if there is race condition
8487 between an exiting control method and a running namespace walk. (Reported
8491 Fixed a problem where the CreateField and CreateXXXField operators would
8492 incorrectly allow duplicate names (the name of the field) with no
8496 Implemented several changes for Notify handling. Added support for new
8498 values (ACPI 2.0+) and improved the Notify debug output. Notify on
8499 PowerResource objects is no longer allowed, as per the ACPI
8501 (Bob Moore, Zhang Rui)
8503 All Reference Objects returned via the AcpiEvaluateObject interface are
8505 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
8507 NULL objects - either NULL package elements or unresolved named
8510 Fixed a problem where an extraneous debug message was produced for
8512 objects (when debugging enabled). The message "Package List length larger
8513 than NumElements count" is now produced in the correct case, and is now
8515 error message rather than a debug message. Added a debug message for the
8516 opposite case, where NumElements is larger than the Package List (the
8518 will be padded out with NULL elements as per the ACPI spec.)
8520 Implemented several improvements for the output of the ASL "Debug" object
8522 clarify and keep all data for a given object on one output line.
8524 Fixed two size calculation issues with the variable-length Start
8526 resource descriptor.
8528 Example Code and Data Size: These are the sizes for the OS-independent
8529 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8530 debug version of the code includes the debug output trace mechanism and
8532 a much larger code and data size.
8535 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8536 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8538 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
8539 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
8541 2) iASL Compiler/Disassembler and Tools:
8543 Fixed a problem with the use of the Switch operator where execution of
8545 containing method by multiple concurrent threads could cause an
8546 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
8547 actual Switch opcode, it must be simulated with local named temporary
8548 variables and if/else pairs. The solution chosen was to mark any method
8550 uses Switch as Serialized, thus preventing multiple thread entries. BZ
8553 ----------------------------------------
8554 13 February 2008. Summary of changes for version 20080213:
8556 1) ACPI CA Core Subsystem:
8558 Implemented another MS compatibility design change for GPE/Notify
8560 GPEs are now cleared/enabled asynchronously to allow all pending notifies
8562 complete first. It is expected that the OSL will queue the enable request
8563 behind all pending notify requests (may require changes to the local host
8565 in AcpiOsExecute). Alexey Starikovskiy.
8567 Fixed a problem where buffer and package objects passed as arguments to a
8568 control method via the external AcpiEvaluateObject interface could cause
8570 AE_AML_INTERNAL exception depending on the order and type of operators
8571 executed by the target control method.
8573 Fixed a problem where resource descriptor size optimization could cause a
8574 problem when a _CRS resource template is passed to a _SRS method. The
8576 resource template must use the same descriptors (with the same size) as
8577 returned from _CRS. This change affects the following resource
8579 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
8582 Fixed a problem where a CopyObject to RegionField, BankField, and
8584 objects did not perform an implicit conversion as it should. These types
8586 retain their initial type permanently as per the ACPI specification.
8588 a CopyObject to all other object types should not perform an implicit
8589 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
8591 Fixed a problem with the AcpiGetDevices interface where the mechanism to
8592 match device CIDs did not examine the entire list of available CIDs, but
8593 instead aborted on the first non-matching CID. Andrew Patterson.
8595 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
8597 inadvertently changed to return a 16-bit value instead of a 32-bit value,
8598 truncating the upper dword of a 64-bit value. This macro is only used to
8599 display debug output, so no incorrect calculations were made. Also,
8600 reimplemented the macro so that a 64-bit shift is not performed by
8601 inefficient compilers.
8603 Added missing va_end statements that should correspond with each va_start
8606 Example Code and Data Size: These are the sizes for the OS-independent
8607 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8608 debug version of the code includes the debug output trace mechanism and
8610 a much larger code and data size.
8613 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8614 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8616 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
8617 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
8619 2) iASL Compiler/Disassembler and Tools:
8621 Implemented full disassembler support for the following new ACPI tables:
8622 BERT, EINJ, and ERST. Implemented partial disassembler support for the
8623 complicated HEST table. These tables support the Windows Hardware Error
8624 Architecture (WHEA).
8626 ----------------------------------------
8627 23 January 2008. Summary of changes for version 20080123:
8629 1) ACPI CA Core Subsystem:
8631 Added the 2008 copyright to all module headers and signons. This affects
8632 virtually every file in the ACPICA core subsystem, the iASL compiler, and
8633 the tools/utilities.
8635 Fixed a problem with the SizeOf operator when used with Package and
8637 objects. These objects have deferred execution for some arguments, and
8639 execution is now completed before the SizeOf is executed. This problem
8641 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
8645 Implemented an enhancement to the interpreter "slack mode". In the
8648 an explicit return or an implicitly returned object from the last
8650 opcode, a control method will now implicitly return an integer of value 0
8652 Microsoft compatibility. (Lin Ming) BZ 392
8654 Fixed a problem with the Load operator where an exception was not
8657 the case where the table is already loaded. (Lin Ming) BZ 463
8659 Implemented support for the use of DDBHandles as an Indexed Reference, as
8661 the ACPI spec. (Lin Ming) BZ 486
8663 Implemented support for UserTerm (Method invocation) for the Unload
8665 as per the ACPI spec. (Lin Ming) BZ 580
8667 Fixed a problem with the LoadTable operator where the OemId and
8669 input strings could cause unexpected failures if they were shorter than
8671 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
8673 Implemented support for UserTerm (Method invocation) for the Unload
8675 as per the ACPI spec. (Lin Ming) BZ 580
8677 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
8679 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
8681 Example Code and Data Size: These are the sizes for the OS-independent
8682 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8683 debug version of the code includes the debug output trace mechanism and
8685 a much larger code and data size.
8688 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8689 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8691 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
8692 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
8694 2) iASL Compiler/Disassembler and Tools:
8696 Implemented support in the disassembler for checksum validation on
8698 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
8700 header dump at the start of the disassembly.
8702 Implemented additional debugging information in the namespace listing
8704 created during compilation. In addition to the namespace hierarchy, the
8706 pathname to each namespace object is displayed.
8708 Fixed a problem with the disassembler where invalid ACPI tables could
8710 faults or infinite loops.
8712 Fixed an unexpected parse error when using the optional "parameter types"
8713 list in a control method declaration. (Lin Ming) BZ 397
8715 Fixed a problem where two External declarations with the same name did
8717 cause an error (Lin Ming) BZ 509
8719 Implemented support for full TermArgs (adding Argx, Localx and method
8720 invocation) for the ParameterData parameter to the LoadTable operator.
8724 ----------------------------------------
8725 19 December 2007. Summary of changes for version 20071219:
8727 1) ACPI CA Core Subsystem:
8729 Implemented full support for deferred execution for the TermArg string
8730 arguments for DataTableRegion. This enables forward references and full
8731 operand resolution for the three string arguments. Similar to
8733 deferred argument execution.) Lin Ming. BZ 430
8735 Implemented full argument resolution support for the BankValue argument
8737 BankField. Previously, only constants were supported, now any TermArg may
8739 used. Lin Ming BZ 387, 393
8741 Fixed a problem with AcpiGetDevices where the search of a branch of the
8742 device tree could be terminated prematurely. In accordance with the ACPI
8743 specification, the search down the current branch is terminated if a
8745 is both not present and not functional (instead of just not present.)
8749 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
8751 the underlying AML code changed the GPE enable registers. Now, any
8753 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
8755 instead of simply ignored. Rui Zhang.
8757 Fixed a problem with Index Fields where the Index register was
8759 limited to a maximum of 32 bits. Now any size may be used.
8761 Fixed a couple memory leaks associated with "implicit return" objects
8763 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
8765 Example Code and Data Size: These are the sizes for the OS-independent
8766 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8767 debug version of the code includes the debug output trace mechanism and
8769 a much larger code and data size.
8772 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8773 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8775 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
8776 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
8778 ----------------------------------------
8779 14 November 2007. Summary of changes for version 20071114:
8781 1) ACPI CA Core Subsystem:
8783 Implemented event counters for each of the Fixed Events, the ACPI SCI
8784 (interrupt) itself, and control methods executed. Named
8785 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
8787 should be useful for debugging and statistics.
8789 Implemented a new external interface, AcpiGetStatistics, to retrieve the
8790 contents of the various event counters. Returns the current values for
8791 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
8792 AcpiMethodCount. The interface can be expanded in the future if new
8794 are added. Device drivers should use this interface rather than access
8798 Fixed a problem with the FromBCD and ToBCD operators. With some
8800 the ShortDivide function worked incorrectly, causing problems with the
8802 functions with large input values. A truncation from 64-bit to 32-bit
8803 inadvertently occurred. Internal BZ 435. Lin Ming
8805 Fixed a problem with Index references passed as method arguments.
8807 passed as arguments to control methods were dereferenced immediately
8809 control was passed to the called method). The references are now
8811 passed directly to the called method. BZ 5389. Lin Ming
8813 Fixed a problem with CopyObject used in conjunction with the Index
8815 The reference was incorrectly dereferenced before the copy. The reference
8817 now correctly copied. BZ 5391. Lin Ming
8819 Fixed a problem with Control Method references within Package objects.
8821 references are now correctly generated. This completes the package
8822 construction overhaul that began in version 20071019.
8824 Example Code and Data Size: These are the sizes for the OS-independent
8825 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8826 debug version of the code includes the debug output trace mechanism and
8828 a much larger code and data size.
8831 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8832 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8834 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
8835 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
8838 2) iASL Compiler/Disassembler and Tools:
8840 The AcpiExec utility now installs handlers for all of the predefined
8841 Operation Region types. New types supported are: PCI_Config, CMOS, and
8844 Fixed a problem with the 64-bit version of AcpiExec where the extended
8846 bit) address fields for the DSDT and FACS within the FADT were not being
8847 used, causing truncation of the upper 32-bits of these addresses. Lin
8851 ----------------------------------------
8852 19 October 2007. Summary of changes for version 20071019:
8854 1) ACPI CA Core Subsystem:
8856 Fixed a problem with the Alias operator when the target of the alias is a
8857 named ASL operator that opens a new scope -- Scope, Device,
8859 Processor, and ThermalZone. In these cases, any children of the original
8860 operator could not be accessed via the alias, potentially causing
8862 AE_NOT_FOUND exceptions. (BZ 9067)
8864 Fixed a problem with the Package operator where all named references were
8865 created as object references and left otherwise unresolved. According to
8867 ACPI specification, a Package can only contain Data Objects or references
8869 control methods. The implication is that named references to Data Objects
8870 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
8871 immediately upon package creation. This is the approach taken with this
8872 change. References to all other named objects (Methods, Devices, Scopes,
8873 etc.) are all now properly created as reference objects. (BZ 5328)
8875 Reverted a change to Notify handling that was introduced in version
8876 20070508. This version changed the Notify handling from asynchronous to
8877 fully synchronous (Device driver Notify handling with respect to the
8879 ASL operator). It was found that this change caused more problems than it
8880 solved and was removed by most users.
8882 Fixed a problem with the Increment and Decrement operators where the type
8884 the target object could be unexpectedly and incorrectly changed. (BZ 353)
8887 Fixed a problem with the Load and LoadTable operators where the table
8888 location within the namespace was ignored. Instead, the table was always
8889 loaded into the root or current scope. Lin Ming.
8891 Fixed a problem with the Load operator when loading a table from a buffer
8892 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
8894 Fixed a problem with the Debug object where a store of a DdbHandle
8896 object to the Debug object could cause a fault.
8898 Added a table checksum verification for the Load operator, in the case
8900 the load is from a buffer. (BZ 578).
8902 Implemented additional parameter validation for the LoadTable operator.
8904 length of the input strings SignatureString, OemIdString, and OemTableId
8906 now checked for maximum lengths. (BZ 582) Lin Ming.
8908 Example Code and Data Size: These are the sizes for the OS-independent
8909 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8910 debug version of the code includes the debug output trace mechanism and
8912 a much larger code and data size.
8915 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8916 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8918 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
8919 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
8922 2) iASL Compiler/Disassembler:
8924 Fixed a problem where if a single file was specified and the file did not
8925 exist, no error message was emitted. (Introduced with wildcard support in
8928 ----------------------------------------
8929 19 September 2007. Summary of changes for version 20070919:
8931 1) ACPI CA Core Subsystem:
8933 Designed and implemented new external interfaces to install and remove
8934 handlers for ACPI table-related events. Current events that are defined
8936 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
8937 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
8938 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
8940 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
8941 (acpi_serialized option on Linux) could cause some systems to hang during
8942 initialization. (Bob Moore) BZ 8171
8944 Fixed a problem where objects of certain types (Device, ThermalZone,
8945 Processor, PowerResource) can be not found if they are declared and
8946 referenced from within the same control method (Lin Ming) BZ 341
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: 78.3K Code, 17.0K Data, 95.3K Total
8956 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
8958 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
8959 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
8962 2) iASL Compiler/Disassembler:
8964 Implemented support to allow multiple files to be compiled/disassembled
8967 single invocation. This includes command line wildcard support for both
8969 Windows and Unix versions of the compiler. This feature simplifies the
8970 disassembly and compilation of multiple ACPI tables in a single
8973 ----------------------------------------
8974 08 May 2007. Summary of changes for version 20070508:
8976 1) ACPI CA Core Subsystem:
8978 Implemented a Microsoft compatibility design change for the handling of
8980 Notify AML operator. Previously, notify handlers were dispatched and
8981 executed completely asynchronously in a deferred thread. The new design
8982 still executes the notify handlers in a different thread, but the
8984 thread that executed the Notify() now waits at a synchronization point
8986 the notify handler to complete. Some machines depend on a synchronous
8988 operator in order to operate correctly.
8990 Implemented support to allow Package objects to be passed as method
8991 arguments to the external AcpiEvaluateObject interface. Previously, this
8992 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
8993 implemented since there were no reserved control methods that required it
8996 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
8998 contained invalid non-zero values in reserved fields could cause later
8999 failures because these fields have meaning in later revisions of the
9001 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
9003 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
9005 Fixed a problem where the Global Lock handle was not properly updated if
9007 thread that acquired the Global Lock via executing AML code then
9009 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
9013 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
9014 could be corrupted if the interrupt being removed was at the head of the
9015 list. Reported by Linn Crosetto.
9017 Example Code and Data Size: These are the sizes for the OS-independent
9018 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9019 debug version of the code includes the debug output trace mechanism and
9021 a much larger code and data size.
9024 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9025 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9027 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
9028 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
9030 ----------------------------------------
9031 20 March 2007. Summary of changes for version 20070320:
9033 1) ACPI CA Core Subsystem:
9035 Implemented a change to the order of interpretation and evaluation of AML
9036 operand objects within the AML interpreter. The interpreter now evaluates
9037 operands in the order that they appear in the AML stream (and the
9038 corresponding ASL code), instead of in the reverse order (after the
9040 operand list has been parsed). The previous behavior caused several
9042 incompatibilities with the Microsoft AML interpreter as well as being
9043 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
9045 Implemented a change to the ACPI Global Lock support. All interfaces to
9047 global lock now allow the same thread to acquire the lock multiple times.
9048 This affects the AcpiAcquireGlobalLock external interface to the global
9050 as well as the internal use of the global lock to support AML fields -- a
9051 control method that is holding the global lock can now simultaneously
9053 AML fields that require global lock protection. Previously, in both
9055 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
9057 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
9058 Controller. There is no change to the behavior of the AML Acquire
9060 as this can already be used to acquire a mutex multiple times by the same
9061 thread. BZ 8066. With assistance from Alexey Starikovskiy.
9063 Fixed a problem where invalid objects could be referenced in the AML
9064 Interpreter after error conditions. During operand evaluation, ensure
9066 the internal "Return Object" field is cleared on error and only valid
9067 pointers are stored there. Caused occasional access to deleted objects
9069 resulted in "large reference count" warning messages. Valery Podrezov.
9071 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
9073 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
9076 Fixed an internal problem with the handling of result objects on the
9077 interpreter result stack. BZ 7872. Valery Podrezov.
9079 Removed obsolete code that handled the case where AML_NAME_OP is the
9081 of a reference (Reference.Opcode). This code was no longer necessary. BZ
9082 7874. Valery Podrezov.
9084 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
9087 remnant from the previously discontinued 16-bit support.
9089 Example Code and Data Size: These are the sizes for the OS-independent
9090 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9091 debug version of the code includes the debug output trace mechanism and
9093 a much larger code and data size.
9096 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9097 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9099 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9100 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
9102 ----------------------------------------
9103 26 January 2007. Summary of changes for version 20070126:
9105 1) ACPI CA Core Subsystem:
9107 Added the 2007 copyright to all module headers and signons. This affects
9108 virtually every file in the ACPICA core subsystem, the iASL compiler, and
9111 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
9112 during a table load. A bad pointer was passed in the case where the DSDT
9114 overridden, causing a fault in this case.
9116 Example Code and Data Size: These are the sizes for the OS-independent
9117 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9118 debug version of the code includes the debug output trace mechanism and
9120 a much larger code and data size.
9123 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9124 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9126 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9127 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9129 ----------------------------------------
9130 15 December 2006. Summary of changes for version 20061215:
9132 1) ACPI CA Core Subsystem:
9134 Support for 16-bit ACPICA has been completely removed since it is no
9136 necessary and it clutters the code. All 16-bit macros, types, and
9137 conditional compiles have been removed, cleaning up and simplifying the
9139 across the entire subsystem. DOS support is no longer needed since the
9140 bootable Linux firmware kit is now available.
9142 The handler for the Global Lock is now removed during AcpiTerminate to
9143 enable a clean subsystem restart, via the implementation of the
9144 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
9147 Implemented enhancements to the multithreading support within the
9149 to enable improved multithreading debugging and evaluation of the
9153 Debugger: Enhanced the Statistics/Memory command to emit the total
9155 memory used during the execution, as well as the maximum memory consumed
9157 each of the various object types. (Valery Podrezov)
9159 Example Code and Data Size: These are the sizes for the OS-independent
9160 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9161 debug version of the code includes the debug output trace mechanism and
9163 a much larger code and data size.
9166 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9167 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9169 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
9170 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
9173 2) iASL Compiler/Disassembler and Tools:
9175 AcpiExec: Implemented a new option (-m) to display full memory use
9176 statistics upon subsystem/program termination. (Valery Podrezov)
9178 ----------------------------------------
9179 09 November 2006. Summary of changes for version 20061109:
9181 1) ACPI CA Core Subsystem:
9183 Optimized the Load ASL operator in the case where the source operand is
9185 operation region. Simply map the operation region memory, instead of
9186 performing a bytewise read. (Region must be of type SystemMemory, see
9189 Fixed the Load ASL operator for the case where the source operand is a
9190 region field. A buffer object is also allowed as the source operand. BZ
9193 Fixed a problem where the Load ASL operator allowed the source operand to
9195 an operation region of any type. It is now restricted to regions of type
9196 SystemMemory, as per the ACPI specification. BZ 481
9198 Additional cleanup and optimizations for the new Table Manager code.
9200 AcpiEnable will now fail if all of the required ACPI tables are not
9202 (FADT, FACS, DSDT). BZ 477
9204 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
9206 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
9207 manually optimized to be aligned and will not work if it is byte-packed.
9209 Example Code and Data Size: These are the sizes for the OS-independent
9210 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9211 debug version of the code includes the debug output trace mechanism and
9213 a much larger code and data size.
9216 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9217 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9219 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
9220 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
9223 2) iASL Compiler/Disassembler and Tools:
9225 Fixed a problem where the presence of the _OSI predefined control method
9226 within complex expressions could cause an internal compiler error.
9228 AcpiExec: Implemented full region support for multiple address spaces.
9229 SpaceId is now part of the REGION object. BZ 429
9231 ----------------------------------------
9232 11 October 2006. Summary of changes for version 20061011:
9234 1) ACPI CA Core Subsystem:
9236 Completed an AML interpreter performance enhancement for control method
9237 execution. Previously a 2-pass parse/execution, control methods are now
9238 completely parsed and executed in a single pass. This improves overall
9239 interpreter performance by ~25%, reduces code size, and reduces CPU stack
9240 use. (Valery Podrezov + interpreter changes in version 20051202 that
9241 eliminated namespace loading during the pass one parse.)
9243 Implemented _CID support for PCI Root Bridge detection. If the _HID does
9245 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
9247 obtained and also checked for an ID match.
9249 Implemented additional support for the PCI _ADR execution: upsearch until
9251 device scope is found before executing _ADR. This allows PCI_Config
9252 operation regions to be declared locally within control methods
9256 Fixed a problem with a possible race condition between threads executing
9257 AcpiWalkNamespace and the AML interpreter. This condition was removed by
9258 modifying AcpiWalkNamespace to (by default) ignore all temporary
9260 entries created during any concurrent control method execution. An
9261 additional namespace race condition is known to exist between
9262 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
9265 Restructured the AML ParseLoop function, breaking it into several
9266 subfunctions in order to reduce CPU stack use and improve
9270 AcpiGetHandle: Fix for parameter validation to detect invalid
9272 of prefix handle and pathname. BZ 478
9274 Example Code and Data Size: These are the sizes for the OS-independent
9275 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9276 debug version of the code includes the debug output trace mechanism and
9278 a much larger code and data size.
9281 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9282 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9284 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
9285 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
9287 2) iASL Compiler/Disassembler and Tools:
9289 Ported the -g option (get local ACPI tables) to the new ACPICA Table
9291 to restore original behavior.
9293 ----------------------------------------
9294 27 September 2006. Summary of changes for version 20060927:
9296 1) ACPI CA Core Subsystem:
9298 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
9299 These functions now use a spinlock for mutual exclusion and the interrupt
9300 level indication flag is not needed.
9302 Fixed a problem with the Global Lock where the lock could appear to be
9303 obtained before it is actually obtained. The global lock semaphore was
9304 inadvertently created with one unit instead of zero units. (BZ 464)
9308 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
9310 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
9312 Example Code and Data Size: These are the sizes for the OS-independent
9313 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9314 debug version of the code includes the debug output trace mechanism and
9316 a much larger code and data size.
9319 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9320 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9322 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9323 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
9326 2) iASL Compiler/Disassembler and Tools:
9328 Fixed a compilation problem with the pre-defined Resource Descriptor
9330 names where an "object does not exist" error could be incorrectly
9332 if the parent ResourceTemplate pathname places the template within a
9333 different namespace scope than the current scope. (BZ 7212)
9335 Fixed a problem where the compiler could hang after syntax errors
9337 in an ElseIf construct. (BZ 453)
9339 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
9340 operator. An incorrect output filename was produced when this parameter
9342 a null string (""). Now, the original input filename is used as the AML
9343 output filename, with an ".aml" extension.
9345 Implemented a generic batch command mode for the AcpiExec utility
9347 any AML debugger command) (Valery Podrezov).
9349 ----------------------------------------
9350 12 September 2006. Summary of changes for version 20060912:
9352 1) ACPI CA Core Subsystem:
9354 Enhanced the implementation of the "serialized mode" of the interpreter
9355 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
9356 specified, instead of creating a serialization semaphore per control
9358 the interpreter lock is simply no longer released before a blocking
9359 operation during control method execution. This effectively makes the AML
9360 Interpreter single-threaded. The overhead of a semaphore per-method is
9363 Fixed a regression where an error was no longer emitted if a control
9365 attempts to create 2 objects of the same name. This once again returns
9366 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
9368 will dynamically serialize the control method to possible prevent future
9371 Integrated a fix for a problem with PCI Express HID detection in the PCI
9372 Config Space setup procedure. (BZ 7145)
9374 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
9375 AcpiHwInitialize function - the FADT registers are now validated when the
9378 Added two new warnings during FADT verification - 1) if the FADT is
9380 than the largest known FADT version, and 2) if there is a mismatch
9383 32-bit block address and the 64-bit X counterpart (when both are non-
9386 Example Code and Data Size: These are the sizes for the OS-independent
9387 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9388 debug version of the code includes the debug output trace mechanism and
9390 a much larger code and data size.
9393 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9394 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9396 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
9397 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
9400 2) iASL Compiler/Disassembler and Tools:
9402 Fixed a problem with the implementation of the Switch() operator where
9404 temporary variable was declared too close to the actual Switch, instead
9406 at method level. This could cause a problem if the Switch() operator is
9407 within a while loop, causing an error on the second iteration. (BZ 460)
9409 Disassembler - fix for error emitted for unknown type for target of scope
9410 operator. Now, ignore it and continue.
9412 Disassembly of an FADT now verifies the input FADT and reports any errors
9413 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
9415 Disassembly of raw data buffers with byte initialization data now
9417 each output line with the current buffer offset.
9419 Disassembly of ASF! table now includes all variable-length data fields at
9420 the end of some of the subtables.
9422 The disassembler now emits a comment if a buffer appears to be a
9423 ResourceTemplate, but cannot be disassembled as such because the EndTag
9425 not appear at the very end of the buffer.
9427 AcpiExec - Added the "-t" command line option to enable the serialized
9429 of the AML interpreter.
9431 ----------------------------------------
9432 31 August 2006. Summary of changes for version 20060831:
9434 1) ACPI CA Core Subsystem:
9436 Miscellaneous fixes for the Table Manager:
9437 - Correctly initialize internal common FADT for all 64-bit "X" fields
9438 - Fixed a couple table mapping issues during table load
9439 - Fixed a couple alignment issues for IA64
9440 - Initialize input array to zero in AcpiInitializeTables
9441 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
9444 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
9446 immediately disabled to prevent the waking GPE from firing again and to
9447 prevent other wake GPEs from interrupting the wake process.
9449 Added the AcpiGpeCount global that tracks the number of processed GPEs,
9451 be used for debugging systems with a large number of ACPI interrupts.
9453 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
9454 both the ACPICA headers and the disassembler.
9456 Example Code and Data Size: These are the sizes for the OS-independent
9457 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9458 debug version of the code includes the debug output trace mechanism and
9460 a much larger code and data size.
9463 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9464 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9466 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
9467 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
9470 2) iASL Compiler/Disassembler and Tools:
9472 Disassembler support for the DMAR ACPI table.
9474 ----------------------------------------
9475 23 August 2006. Summary of changes for version 20060823:
9477 1) ACPI CA Core Subsystem:
9479 The Table Manager component has been completely redesigned and
9480 reimplemented. The new design is much simpler, and reduces the overall
9482 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
9484 now possible to obtain the ACPI tables very early during kernel
9485 initialization, even before dynamic memory management is initialized.
9486 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
9488 Obsolete ACPICA interfaces:
9490 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
9493 - AcpiLoadTable: Not needed.
9494 - AcpiUnloadTable: Not needed.
9496 New ACPICA interfaces:
9498 - AcpiInitializeTables: Must be called before the table manager can be
9500 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
9501 allocated memory after it becomes available.
9502 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
9506 Other ACPICA changes:
9508 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
9510 AcpiOsUnmapMemory to free this mapping.
9511 - AcpiGetTable returns the actual mapped table. The mapping is managed
9512 internally and must not be deleted by the caller. Use of this interface
9513 causes no additional dynamic memory allocation.
9514 - AcpiFindRootPointer: Support for physical addressing has been
9516 it appeared to be unused.
9517 - The interface to AcpiOsMapMemory has changed to be consistent with the
9518 other allocation interfaces.
9519 - The interface to AcpiOsGetRootPointer has changed to eliminate
9522 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
9524 bit platforms. Was previously 64 bits on all platforms.
9525 - The interface to the ACPI Global Lock acquire/release macros have
9527 slightly since ACPICA no longer keeps a local copy of the FACS with a
9528 constructed pointer to the actual global lock.
9530 Porting to the new table manager:
9532 - AcpiInitializeTables: Must be called once, and can be called anytime
9533 during the OS initialization process. It allows the host to specify an
9535 of memory to be used to store the internal version of the RSDT/XSDT (root
9536 table). This allows the host to access ACPI tables before memory
9538 is initialized and running.
9539 - AcpiReallocateRootTable: Can be called after memory management is
9541 to copy the root table to a dynamically allocated array, freeing up the
9542 scratch memory specified in the call to AcpiInitializeTables.
9543 - AcpiSubsystemInitialize: This existing interface is independent of the
9544 Table Manager, and does not have to be called before the Table Manager
9546 be used, it only must be called before the rest of ACPICA can be used.
9547 - ACPI Tables: Some changes have been made to the names and structure of
9549 actbl.h and actbl1.h header files and may require changes to existing
9551 For example, bitfields have been completely removed because of their lack
9553 portability across C compilers.
9554 - Update interfaces to the Global Lock acquire/release macros if local
9555 versions are used. (see acwin.h)
9557 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
9561 Example Code and Data Size: These are the sizes for the OS-independent
9562 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9563 debug version of the code includes the debug output trace mechanism and
9565 a much larger code and data size.
9568 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9569 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9571 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
9572 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
9575 2) iASL Compiler/Disassembler and Tools:
9577 No changes for this release.
9579 ----------------------------------------
9580 21 July 2006. Summary of changes for version 20060721:
9582 1) ACPI CA Core Subsystem:
9584 The full source code for the ASL test suite used to validate the iASL
9585 compiler and the ACPICA core subsystem is being released with the ACPICA
9586 source for the first time. The source is contained in a separate package
9588 consists of over 1100 files that exercise all ASL/AML operators. The
9590 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
9594 Completed a new design and implementation for support of the ACPI Global
9595 Lock. On the OS side, the global lock is now treated as a standard AML
9596 mutex. Previously, multiple OS threads could "acquire" the global lock
9597 simultaneously. However, this could cause the BIOS to be starved out of
9599 lock - especially in cases such as the Embedded Controller driver where
9600 there is a tight coupling between the OS and the BIOS.
9602 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
9603 The Global Lock interrupt handler no longer queues the execution of a
9604 separate thread to signal the global lock semaphore. Instead, the
9606 is signaled directly from the interrupt handler.
9608 Implemented support within the AML interpreter for package objects that
9609 contain a larger AML length (package list length) than the package
9611 count. In this case, the length of the package is truncated to match the
9612 package element count. Some BIOS code apparently modifies the package
9614 on the fly, and this change supports this behavior. Provides
9616 with the MS AML interpreter. (With assistance from Fiodor Suietov)
9618 Implemented a temporary fix for the BankValue parameter of a Bank Field
9620 support all constant values, now including the Zero and One opcodes.
9621 Evaluation of this parameter must eventually be converted to a full
9623 evaluation. A not-implemented error is now returned (temporarily) for
9625 constant values for this parameter.
9627 Fixed problem reports (Fiodor Suietov) integrated:
9628 - Fix for premature object deletion after CopyObject on Operation Region
9632 Example Code and Data Size: These are the sizes for the OS-independent
9633 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9634 debug version of the code includes the debug output trace mechanism and
9636 a much larger code and data size.
9639 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
9640 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
9642 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9643 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9646 2) iASL Compiler/Disassembler and Tools:
9648 No changes for this release.
9650 ----------------------------------------
9651 07 July 2006. Summary of changes for version 20060707:
9653 1) ACPI CA Core Subsystem:
9655 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
9656 that do not allow the initialization of address pointers within packed
9657 structures - even though the hardware itself may support misaligned
9658 transfers. Some of the debug data structures are packed by default to
9661 Added an error message for the case where AcpiOsGetThreadId() returns
9663 A non-zero value is required by the core ACPICA code to ensure the proper
9664 operation of AML mutexes and recursive control methods.
9666 The DSDT is now the only ACPI table that determines whether the AML
9667 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
9669 the hooks for per-table 32/64 switching have been removed from the code.
9671 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
9673 Fixed a possible leak of an OwnerID in the error path of
9674 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
9675 deletion to a single place in AcpiTbUninstallTable to correct possible
9677 when using the AcpiTbDeleteTablesByType interface (with assistance from
9680 Fixed a problem with Serialized control methods where the semaphore
9681 associated with the method could be over-signaled after multiple method
9684 Fixed two issues with the locking of the internal namespace data
9686 Both the Unload() operator and AcpiUnloadTable interface now lock the
9687 namespace during the namespace deletion associated with the table unload
9688 (with assistance from Linn Crosetto.)
9690 Fixed problem reports (Valery Podrezov) integrated:
9691 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
9693 Fixed problem reports (Fiodor Suietov) integrated:
9694 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
9695 - On Address Space handler deletion, needless deactivation call (BZ 374)
9696 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
9698 - Possible memory leak, Notify sub-objects of Processor, Power,
9701 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
9702 - Minimum Length of RSDT should be validated (BZ 379)
9703 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
9705 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
9709 Example Code and Data Size: These are the sizes for the OS-independent
9710 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9711 debug version of the code includes the debug output trace mechanism and
9713 a much larger code and data size.
9716 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9717 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9719 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
9720 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
9723 2) iASL Compiler/Disassembler and Tools:
9725 Fixed problem reports:
9726 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
9729 ----------------------------------------
9730 23 June 2006. Summary of changes for version 20060623:
9732 1) ACPI CA Core Subsystem:
9734 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
9735 allows the type to be customized to the host OS for improved efficiency
9736 (since a spinlock is usually a very small object.)
9738 Implemented support for "ignored" bits in the ACPI registers. According
9740 the ACPI specification, these bits should be preserved when writing the
9741 registers via a read/modify/write cycle. There are 3 bits preserved in
9743 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
9745 Implemented the initial deployment of new OSL mutex interfaces. Since
9747 host operating systems have separate mutex and semaphore objects, this
9748 feature was requested. The base code now uses mutexes (and the new mutex
9749 interfaces) wherever a binary semaphore was used previously. However, for
9750 the current release, the mutex interfaces are defined as macros to map
9752 to the existing semaphore interfaces. Therefore, no OSL changes are
9754 at this time. (See acpiosxf.h)
9756 Fixed several problems with the support for the control method SyncLevel
9757 parameter. The SyncLevel now works according to the ACPI specification
9759 in concert with the Mutex SyncLevel parameter, since the current
9761 is a property of the executing thread. Mutual exclusion for control
9763 is now implemented with a mutex instead of a semaphore.
9765 Fixed three instances of the use of the C shift operator in the bitfield
9766 support code (exfldio.c) to avoid the use of a shift value larger than
9768 target data width. The behavior of C compilers is undefined in this case
9770 can cause unpredictable results, and therefore the case must be detected
9772 avoided. (Fiodor Suietov)
9774 Added an info message whenever an SSDT or OEM table is loaded dynamically
9775 via the Load() or LoadTable() ASL operators. This should improve
9777 capability since it will show exactly what tables have been loaded
9779 the tables present in the RSDT/XSDT.)
9781 Example Code and Data Size: These are the sizes for the OS-independent
9782 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9783 debug version of the code includes the debug output trace mechanism and
9785 a much larger code and data size.
9788 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9789 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9791 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
9792 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
9795 2) iASL Compiler/Disassembler and Tools:
9797 No changes for this release.
9799 ----------------------------------------
9800 08 June 2006. Summary of changes for version 20060608:
9802 1) ACPI CA Core Subsystem:
9804 Converted the locking mutex used for the ACPI hardware to a spinlock.
9806 change should eliminate all problems caused by attempting to acquire a
9807 semaphore at interrupt level, and it means that all ACPICA external
9808 interfaces that directly access the ACPI hardware can be safely called
9810 interrupt level. OSL code that implements the semaphore interfaces should
9812 able to eliminate any workarounds for being called at interrupt level.
9814 Fixed a regression introduced in 20060526 where the ACPI device
9815 initialization could be prematurely aborted with an AE_NOT_FOUND if a
9817 did not have an optional _INI method.
9819 Fixed an IndexField issue where a write to the Data Register should be
9820 limited in size to the AccessSize (width) of the IndexField itself. (BZ
9824 Fixed problem reports (Valery Podrezov) integrated:
9825 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
9827 Fixed problem reports (Fiodor Suietov) integrated:
9828 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
9830 Removed four global mutexes that were obsolete and were no longer being
9833 Example Code and Data Size: These are the sizes for the OS-independent
9834 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9835 debug version of the code includes the debug output trace mechanism and
9837 a much larger code and data size.
9840 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9841 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9843 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
9844 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
9847 2) iASL Compiler/Disassembler and Tools:
9849 Fixed a fault when using -g option (get tables from registry) on Windows
9852 Fixed problem reports integrated:
9853 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
9854 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
9856 - Global table revision override (-r) is ignored (BZ 413)
9858 ----------------------------------------
9859 26 May 2006. Summary of changes for version 20060526:
9861 1) ACPI CA Core Subsystem:
9863 Restructured, flattened, and simplified the internal interfaces for
9864 namespace object evaluation - resulting in smaller code, less CPU stack
9866 and fewer interfaces. (With assistance from Mikhail Kouzmich)
9868 Fixed a problem with the CopyObject operator where the first parameter
9870 not typed correctly for the parser, interpreter, compiler, and
9872 Caused various errors and unexpected behavior.
9874 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
9875 produced incorrect results with some C compilers. Since the behavior of C
9876 compilers when the shift value is larger than the datatype width is
9877 apparently not well defined, the interpreter now detects this condition
9879 simply returns zero as expected in all such cases. (BZ 395)
9881 Fixed problem reports (Valery Podrezov) integrated:
9882 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
9883 - Allow interpreter to handle nested method declarations (BZ 5361)
9885 Fixed problem reports (Fiodor Suietov) integrated:
9886 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
9888 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
9890 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
9891 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
9892 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
9893 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
9894 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
9895 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
9896 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
9898 - Status of the Global Initialization Handler call not used (BZ 366)
9899 - Incorrect object parameter to Global Initialization Handler (BZ 367)
9901 Example Code and Data Size: These are the sizes for the OS-independent
9902 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9903 debug version of the code includes the debug output trace mechanism and
9905 a much larger code and data size.
9908 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9909 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9911 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
9912 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
9915 2) iASL Compiler/Disassembler and Tools:
9917 Modified the parser to allow the names IO, DMA, and IRQ to be used as
9918 namespace identifiers with no collision with existing resource descriptor
9919 macro names. This provides compatibility with other ASL compilers and is
9920 most useful for disassembly/recompilation of existing tables without
9922 errors. (With assistance from Thomas Renninger)
9924 Disassembler: fixed an incorrect disassembly problem with the
9925 DataTableRegion and CopyObject operators. Fixed a possible fault during
9926 disassembly of some Alias operators.
9928 ----------------------------------------
9929 12 May 2006. Summary of changes for version 20060512:
9931 1) ACPI CA Core Subsystem:
9933 Replaced the AcpiOsQueueForExecution interface with a new interface named
9934 AcpiOsExecute. The major difference is that the new interface does not
9936 a Priority parameter, this appeared to be useless and has been replaced
9939 Type parameter. The Type tells the host what type of execution is being
9940 requested, such as global lock handler, notify handler, GPE handler, etc.
9941 This allows the host to queue and execute the request as appropriate for
9943 request type, possibly using different work queues and different
9945 for the various request types. This enables fixes for multithreading
9946 deadlock problems such as BZ #5534, and will require changes to all
9948 OS interface layers. (Alexey Starikovskiy and Bob Moore)
9950 Fixed a possible memory leak associated with the support for the so-
9952 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
9955 Fixed a problem with the Load() operator where a table load from an
9956 operation region could overwrite an internal table buffer by up to 7
9958 and cause alignment faults on IPF systems. (With assistance from Luming
9961 Example Code and Data Size: These are the sizes for the OS-independent
9962 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
9963 debug version of the code includes the debug output trace mechanism and
9965 a much larger code and data size.
9968 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
9969 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
9971 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
9972 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
9976 2) iASL Compiler/Disassembler and Tools:
9978 Disassembler: Implemented support to cross reference the internal
9980 and automatically generate ASL External() statements for symbols not
9982 within the current table being disassembled. This will simplify the
9983 disassembly and recompilation of interdependent tables such as SSDTs
9985 these statements will no longer have to be added manually.
9987 Disassembler: Implemented experimental support to automatically detect
9988 invocations of external control methods and generate appropriate
9990 statements. This is problematic because the AML cannot be correctly
9992 until the number of arguments for each control method is known.
9994 standalone method invocations and invocations as the source operand of a
9995 Store() statement are supported.
9997 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
9998 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
9999 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
10000 more readable and likely closer to the original ASL source.
10002 ----------------------------------------
10003 21 April 2006. Summary of changes for version 20060421:
10005 1) ACPI CA Core Subsystem:
10007 Removed a device initialization optimization introduced in 20051216 where
10008 the _STA method was not run unless an _INI was also present for the same
10009 device. This optimization could cause problems because it could allow
10011 methods to be run within a not-present device subtree. (If a not-present
10012 device had no _INI, _STA would not be run, the not-present status would
10014 be discovered, and the children of the device would be incorrectly
10017 Implemented a new _STA optimization where namespace subtrees that do not
10018 contain _INI are identified and ignored during device initialization.
10019 Selectively running _STA can significantly improve boot time on large
10020 machines (with assistance from Len Brown.)
10022 Implemented support for the device initialization case where the returned
10023 _STA flags indicate a device not-present but functioning. In this case,
10025 is not run, but the device children are examined for presence, as per the
10026 ACPI specification.
10028 Implemented an additional change to the IndexField support in order to
10029 conform to MS behavior. The value written to the Index Register is not
10030 simply a byte offset, it is a byte offset in units of the access width of
10031 the parent Index Field. (Fiodor Suietov)
10033 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
10034 interface is called during the creation of all AML operation regions, and
10035 allows the host OS to exert control over what addresses it will allow the
10036 AML code to access. Operation Regions whose addresses are disallowed will
10037 cause a runtime exception when they are actually accessed (will not
10039 or abort table loading.) See oswinxf or osunixxf for an example
10042 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
10043 interface allows the host OS to match the various "optional"
10044 interface/behavior strings for the _OSI predefined control method as
10045 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
10046 for an example implementation.
10048 Restructured and corrected various problems in the exception handling
10050 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
10051 (with assistance from Takayoshi Kochi.)
10053 Modified the Linux source converter to ignore quoted string literals
10055 converting identifiers from mixed to lower case. This will correct
10057 with the disassembler and other areas where such strings must not be
10060 The ACPI_FUNCTION_* macros no longer require quotes around the function
10061 name. This allows the Linux source converter to convert the names, now
10063 the converter ignores quoted strings.
10065 Example Code and Data Size: These are the sizes for the OS-independent
10066 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10067 debug version of the code includes the debug output trace mechanism and
10069 a much larger code and data size.
10073 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10074 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10076 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
10077 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
10080 2) iASL Compiler/Disassembler and Tools:
10082 Implemented 3 new warnings for iASL, and implemented multiple warning
10086 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
10088 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
10089 check for the possible timeout, a warning is issued.
10091 2) Useless operators: If an ASL operator does not specify an optional
10093 operand and it also does not use the function return value from the
10094 operator, a warning is issued since the operator effectively does
10097 3) Unreferenced objects: If a namespace object is created, but never
10098 referenced, a warning is issued. This is a warning level 2 since there
10100 cases where this is ok, such as when a secondary table is loaded that
10102 the unreferenced objects. Even so, care is taken to only flag objects
10104 don't look like they will ever be used. For example, the reserved methods
10105 (starting with an underscore) are usually not referenced because it is
10106 expected that the OS will invoke them.
10108 ----------------------------------------
10109 31 March 2006. Summary of changes for version 20060331:
10111 1) ACPI CA Core Subsystem:
10113 Implemented header file support for the following additional ACPI tables:
10114 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
10116 all current and known ACPI tables are now defined in the ACPICA headers
10118 are available for use by device drivers and other software.
10120 Implemented support to allow tables that contain ACPI names with invalid
10121 characters to be loaded. Previously, this would cause the table load to
10122 fail, but since there are several known cases of such tables on existing
10123 machines, this change was made to enable ACPI support for them. Also,
10125 matches the behavior of the Microsoft ACPI implementation.
10127 Fixed a couple regressions introduced during the memory optimization in
10129 20060317 release. The namespace node definition required additional
10130 reorganization and an internal datatype that had been changed to 8-bit
10132 restored to 32-bit. (Valery Podrezov)
10134 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
10135 could be passed through to AcpiOsReleaseObject which is unexpected. Such
10136 null pointers are now trapped and ignored, matching the behavior of the
10137 previous implementation before the deployment of AcpiOsReleaseObject.
10138 (Valery Podrezov, Fiodor Suietov)
10140 Fixed a memory mapping leak during the deletion of a SystemMemory
10142 region where a cached memory mapping was not deleted. This became a
10143 noticeable problem for operation regions that are defined within
10145 used control methods. (Dana Meyers)
10147 Reorganized the ACPI table header files into two main files: one for the
10148 ACPI tables consumed by the ACPICA core, and another for the
10150 ACPI tables that are consumed by the drivers and other software. The
10152 FADT definitions were merged into one common section and three different
10153 tables (ACPI 1.0, 1.0+, and 2.0)
10155 Example Code and Data Size: These are the sizes for the OS-independent
10156 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
10157 debug version of the code includes the debug output trace mechanism and
10159 a much larger code and data size.
10162 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10163 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10165 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
10166 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
10169 2) iASL Compiler/Disassembler and Tools:
10171 Disassembler: Implemented support to decode and format all non-AML ACPI
10172 tables (tables other than DSDTs and SSDTs.) This includes the new tables
10173 added to the ACPICA headers, therefore all current and known ACPI tables
10177 Disassembler: The change to allow ACPI names with invalid characters also
10178 enables the disassembly of such tables. Invalid characters within names
10180 changed to '*' to make the name printable; the iASL compiler will still
10181 generate an error for such names, however, since this is an invalid ACPI
10184 Implemented an option for AcpiXtract (-a) to extract all tables found in
10186 input file. The default invocation extracts only the DSDTs and SSDTs.
10188 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
10189 makefile for the AcpiXtract utility.
10191 ----------------------------------------
10192 17 March 2006. Summary of changes for version 20060317:
10194 1) ACPI CA Core Subsystem:
10196 Implemented the use of a cache object for all internal namespace nodes.
10197 Since there are about 1000 static nodes in a typical system, this will
10198 decrease memory use for cache implementations that minimize per-
10200 overhead (such as a slab allocator.)
10202 Removed the reference count mechanism for internal namespace nodes, since
10204 was deemed unnecessary. This reduces the size of each namespace node by
10205 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
10207 and 32 bytes for the 64-bit case.
10209 Optimized several internal data structures to reduce object size on 64-
10211 platforms by packing data within the 64-bit alignment. This includes the
10212 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
10213 instances corresponding to the namespace objects.
10215 Added two new strings for the predefined _OSI method: "Windows 2001.1
10217 and "Windows 2006".
10219 Split the allocation tracking mechanism out to a separate file, from
10220 utalloc.c to uttrack.c. This mechanism appears to be only useful for
10221 application-level code. Kernels may wish to not include uttrack.c in
10224 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
10226 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
10229 Code and Data Size: These are the sizes for the acpica.lib produced by
10231 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10233 driver or OSPM code. The debug version of the code includes the debug
10235 trace mechanism and has a much larger code and data size. Note that these
10236 values will vary depending on the efficiency of the compiler and the
10237 compiler options used during generation.
10240 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10241 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10243 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
10244 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
10247 2) iASL Compiler/Disassembler and Tools:
10249 Implemented an ANSI C version of the acpixtract utility. This version
10251 automatically extract the DSDT and all SSDTs from the input acpidump text
10252 file and dump the binary output to separate files. It can also display a
10253 summary of the input file including the headers for each table found and
10254 will extract any single ACPI table, with any signature. (See
10255 source/tools/acpixtract)
10257 ----------------------------------------
10258 10 March 2006. Summary of changes for version 20060310:
10260 1) ACPI CA Core Subsystem:
10262 Tagged all external interfaces to the subsystem with the new
10263 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
10265 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
10266 macro. The default definition is NULL.
10268 Added the ACPI_THREAD_ID type for the return value from
10270 This allows the host to define this as necessary to simplify kernel
10271 integration. The default definition is ACPI_NATIVE_UINT.
10273 Fixed two interpreter problems related to error processing, the deletion
10275 objects, and placing invalid pointers onto the internal operator result
10276 stack. BZ 6028, 6151 (Valery Podrezov)
10278 Increased the reference count threshold where a warning is emitted for
10280 reference counts in order to eliminate unnecessary warnings on systems
10282 large namespaces (especially 64-bit.) Increased the value from 0x400 to
10285 Due to universal disagreement as to the meaning of the 'c' in the
10287 function, the ACPI_MEM_CALLOCATE macro has been renamed to
10288 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
10289 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
10292 Code and Data Size: These are the sizes for the acpica.lib produced by
10294 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10296 driver or OSPM code. The debug version of the code includes the debug
10298 trace mechanism and has a much larger code and data size. Note that these
10299 values will vary depending on the efficiency of the compiler and the
10300 compiler options used during generation.
10303 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10304 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10306 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10307 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
10310 2) iASL Compiler/Disassembler:
10312 Disassembler: implemented support for symbolic resource descriptor
10313 references. If a CreateXxxxField operator references a fixed offset
10316 resource descriptor, a name is assigned to the descriptor and the offset
10318 translated to the appropriate resource tag and pathname. The addition of
10319 this support brings the disassembled code very close to the original ASL
10320 source code and helps eliminate run-time errors when the disassembled
10322 is modified (and recompiled) in such a way as to invalidate the original
10325 Implemented support for a Descriptor Name as the last parameter to the
10327 Register() macro. This parameter was inadvertently left out of the ACPI
10328 specification, and will be added for ACPI 3.0b.
10330 Fixed a problem where the use of the "_OSI" string (versus the full path
10331 "\_OSI") caused an internal compiler error. ("No back ptr to op")
10333 Fixed a problem with the error message that occurs when an invalid string
10335 used for a _HID object (such as one with an embedded asterisk:
10337 The correct message is now displayed.
10339 ----------------------------------------
10340 17 February 2006. Summary of changes for version 20060217:
10342 1) ACPI CA Core Subsystem:
10344 Implemented a change to the IndexField support to match the behavior of
10346 Microsoft AML interpreter. The value written to the Index register is now
10348 byte offset, no longer an index based upon the width of the Data
10350 This should fix IndexField problems seen on some machines where the Data
10351 register is not exactly one byte wide. The ACPI specification will be
10352 clarified on this point.
10354 Fixed a problem where several resource descriptor types could overrun the
10355 internal descriptor buffer due to size miscalculation: VendorShort,
10356 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
10357 affect all platforms.
10359 Fixed a problem where individual resource descriptors were misaligned
10361 the internal buffer, causing alignment faults on IA64 platforms.
10363 Code and Data Size: These are the sizes for the acpica.lib produced by
10365 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
10367 driver or OSPM code. The debug version of the code includes the debug
10369 trace mechanism and has a much larger code and data size. Note that these
10370 values will vary depending on the efficiency of the compiler and the
10371 compiler options used during generation.
10374 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10375 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10377 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
10378 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
10381 2) iASL Compiler/Disassembler:
10383 Implemented support for new reserved names: _WDG and _WED are Microsoft
10384 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
10385 defined method (Throttling Depth Limit.)
10387 Fixed a problem where a zero-length VendorShort or VendorLong resource
10388 descriptor was incorrectly emitted as a descriptor of length one.
10390 ----------------------------------------
10391 10 February 2006. Summary of changes for version 20060210:
10393 1) ACPI CA Core Subsystem:
10395 Removed a couple of extraneous ACPI_ERROR messages that appeared during
10396 normal execution. These became apparent after the conversion from
10399 Fixed a problem where the CreateField operator could hang if the BitIndex
10401 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
10403 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
10404 failed with an exception. This also fixes a couple of related RefOf and
10405 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
10407 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
10409 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
10413 Implemented a memory cleanup at the end of the execution of each
10415 of an AML While() loop, preventing the accumulation of outstanding
10417 (Valery Podrezov, BZ 5427)
10419 Eliminated a chunk of duplicate code in the object resolution code.
10423 Fixed several warnings during the 64-bit code generation.
10425 The AcpiSrc source code conversion tool now inserts one line of
10427 after an if() statement that is followed immediately by a comment,
10429 readability of the Linux code.
10431 Code and Data Size: The current and previous library sizes for the core
10432 subsystem are shown below. These are the code and data sizes for the
10433 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10435 values do not include any ACPI driver or OSPM code. The debug version of
10437 code includes the debug output trace mechanism and has a much larger code
10438 and data size. Note that these values will vary depending on the
10440 of the compiler and the compiler options used during generation.
10443 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10444 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10446 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
10447 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
10450 2) iASL Compiler/Disassembler:
10452 Fixed a problem with the disassembly of a BankField operator with a
10454 expression for the BankValue parameter.
10456 ----------------------------------------
10457 27 January 2006. Summary of changes for version 20060127:
10459 1) ACPI CA Core Subsystem:
10461 Implemented support in the Resource Manager to allow unresolved
10463 references within resource package objects for the _PRT method. This
10465 is in addition to the previously implemented unresolved reference support
10466 within the AML parser. If the interpreter slack mode is enabled, these
10467 unresolved references will be passed through to the caller as a NULL
10471 Implemented and deployed new macros and functions for error and warning
10472 messages across the subsystem. These macros are simpler and generate less
10473 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
10474 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
10475 macros remain defined to allow ACPI drivers time to migrate to the new
10478 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
10480 Acquire/Release Lock OSL interfaces.
10482 Fixed a problem where Alias ASL operators are sometimes not correctly
10483 resolved, in both the interpreter and the iASL compiler.
10485 Fixed several problems with the implementation of the
10486 ConcatenateResTemplate
10487 ASL operator. As per the ACPI specification, zero length buffers are now
10488 treated as a single EndTag. One-length buffers always cause a fatal
10489 exception. Non-zero length buffers that do not end with a full 2-byte
10491 cause a fatal exception.
10493 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
10494 interface. (With assistance from Thomas Renninger)
10496 Code and Data Size: The current and previous library sizes for the core
10497 subsystem are shown below. These are the code and data sizes for the
10498 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10500 values do not include any ACPI driver or OSPM code. The debug version of
10502 code includes the debug output trace mechanism and has a much larger code
10503 and data size. Note that these values will vary depending on the
10505 of the compiler and the compiler options used during generation.
10508 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10509 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10511 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
10512 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
10515 2) iASL Compiler/Disassembler:
10517 Fixed an internal error that was generated for any forward references to
10521 ----------------------------------------
10522 13 January 2006. Summary of changes for version 20060113:
10524 1) ACPI CA Core Subsystem:
10526 Added 2006 copyright to all module headers and signons. This affects
10527 virtually every file in the ACPICA core subsystem, iASL compiler, and the
10530 Enhanced the ACPICA error reporting in order to simplify user migration
10532 the non-debug version of ACPICA. Replaced all instances of the
10533 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
10535 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
10536 respectively. This preserves all error and warning messages in the non-
10538 version of the ACPICA code (this has been referred to as the "debug lite"
10539 option.) Over 200 cases were converted to create a total of over 380
10540 error/warning messages across the ACPICA code. This increases the code
10542 data size of the default non-debug version of the code somewhat (about
10544 but all error/warning reporting may be disabled if desired (and code
10545 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
10546 configuration option. The size of the debug version of ACPICA remains
10550 Fixed a memory leak within the AML Debugger "Set" command. One object was
10551 not properly deleted for every successful invocation of the command.
10553 Code and Data Size: The current and previous library sizes for the core
10554 subsystem are shown below. These are the code and data sizes for the
10555 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10557 values do not include any ACPI driver or OSPM code. The debug version of
10559 code includes the debug output trace mechanism and has a much larger code
10560 and data size. Note that these values will vary depending on the
10562 of the compiler and the compiler options used during generation.
10565 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10566 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10568 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
10569 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
10572 2) iASL Compiler/Disassembler:
10574 The compiler now officially supports the ACPI 3.0a specification that was
10575 released on December 30, 2005. (Specification is available at
10578 ----------------------------------------
10579 16 December 2005. Summary of changes for version 20051216:
10581 1) ACPI CA Core Subsystem:
10583 Implemented optional support to allow unresolved names within ASL Package
10584 objects. A null object is inserted in the package when a named reference
10585 cannot be located in the current namespace. Enabled via the interpreter
10586 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
10588 that contain such code.
10590 Implemented an optimization to the initialization sequence that can
10592 boot time. During ACPI device initialization, the _STA method is now run
10594 and only if the _INI method exists. The _STA method is used to determine
10596 the device is present; An _INI can only be run if _STA returns present,
10598 it is a waste of time to run the _STA method if the _INI does not exist.
10599 (Prototype and assistance from Dong Wei)
10601 Implemented use of the C99 uintptr_t for the pointer casting macros if it
10603 available in the current compiler. Otherwise, the default (void *) cast
10607 Fixed some possible memory leaks found within the execution path of the
10608 Break, Continue, If, and CreateField operators. (Valery Podrezov)
10610 Fixed a problem introduced in the 20051202 release where an exception is
10611 generated during method execution if a control method attempts to declare
10614 Moved resource descriptor string constants that are used by both the AML
10615 disassembler and AML debugger to the common utilities directory so that
10616 these components are independent.
10618 Implemented support in the AcpiExec utility (-e switch) to globally
10620 exceptions during control method execution (method is not aborted.)
10622 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
10625 Code and Data Size: The current and previous library sizes for the core
10626 subsystem are shown below. These are the code and data sizes for the
10627 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10629 values do not include any ACPI driver or OSPM code. The debug version of
10631 code includes the debug output trace mechanism and has a much larger code
10632 and data size. Note that these values will vary depending on the
10634 of the compiler and the compiler options used during generation.
10637 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10638 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10640 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
10641 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
10644 2) iASL Compiler/Disassembler:
10646 Fixed a problem where a CPU stack overflow fault could occur if a
10648 method call was made from within a Return statement.
10650 ----------------------------------------
10651 02 December 2005. Summary of changes for version 20051202:
10653 1) ACPI CA Core Subsystem:
10655 Modified the parsing of control methods to no longer create namespace
10656 objects during the first pass of the parse. Objects are now created only
10657 during the execute phase, at the moment the namespace creation operator
10659 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
10661 should eliminate ALREADY_EXISTS exceptions seen on some machines where
10662 reentrant control methods are protected by an AML mutex. The mutex will
10664 correctly block multiple threads from attempting to create the same
10668 Increased the number of available Owner Ids for namespace object tracking
10669 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
10671 some machines with a large number of ACPI tables (either static or
10674 Fixed a problem with the AcpiExec utility where a fault could occur when
10676 -b switch (batch mode) is used.
10678 Enhanced the namespace dump routine to output the owner ID for each
10681 Code and Data Size: The current and previous library sizes for the core
10682 subsystem are shown below. These are the code and data sizes for the
10683 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10685 values do not include any ACPI driver or OSPM code. The debug version of
10687 code includes the debug output trace mechanism and has a much larger code
10688 and data size. Note that these values will vary depending on the
10690 of the compiler and the compiler options used during generation.
10693 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10694 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10696 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10697 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
10700 2) iASL Compiler/Disassembler:
10702 Fixed a parse error during compilation of certain Switch/Case constructs.
10704 simplify the parse, the grammar now allows for multiple Default
10706 and this error is now detected and flagged during the analysis phase.
10708 Disassembler: The disassembly now includes the contents of the original
10709 table header within a comment at the start of the file. This includes the
10710 name and version of the original ASL compiler.
10712 ----------------------------------------
10713 17 November 2005. Summary of changes for version 20051117:
10715 1) ACPI CA Core Subsystem:
10717 Fixed a problem in the AML parser where the method thread count could be
10718 decremented below zero if any errors occurred during the method parse
10720 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
10722 This also fixed a related regression with the mechanism that detects and
10723 corrects methods that cannot properly handle reentrancy (related to the
10724 deployment of the new OwnerId mechanism.)
10726 Eliminated the pre-parsing of control methods (to detect errors) during
10727 table load. Related to the problem above, this was causing unwind issues
10729 any errors occurred during the parse, and it seemed to be overkill. A
10731 load should not be aborted if there are problems with any single control
10732 method, thus rendering this feature rather pointless.
10734 Fixed a problem with the new table-driven resource manager where an
10736 buffer overflow could occur for small resource templates.
10738 Implemented a new external interface, AcpiGetVendorResource. This
10740 will find and return a vendor-defined resource descriptor within a _CRS
10742 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
10745 Removed the length limit (200) on string objects as per the upcoming ACPI
10746 3.0A specification. This affects the following areas of the interpreter:
10748 any implicit conversion of a Buffer to a String, 2) a String object
10750 of the ASL Concatentate operator, 3) the String object result of the ASL
10753 Fixed a problem in the Windows OS interface layer (OSL) where a
10755 on a semaphore object would incorrectly timeout. This allows the
10756 multithreading features of the AcpiExec utility to work properly under
10759 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
10760 the recently added file named "utresrc.c".
10762 Code and Data Size: The current and previous library sizes for the core
10763 subsystem are shown below. These are the code and data sizes for the
10764 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10766 values do not include any ACPI driver or OSPM code. The debug version of
10768 code includes the debug output trace mechanism and has a much larger code
10769 and data size. Note that these values will vary depending on the
10771 of the compiler and the compiler options used during generation.
10774 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10775 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10777 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
10778 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10781 2) iASL Compiler/Disassembler:
10783 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
10784 specification. For the iASL compiler, this means that string literals
10786 the source ASL can be of any length.
10788 Enhanced the listing output to dump the AML code for resource descriptors
10789 immediately after the ASL code for each descriptor, instead of in a block
10791 the end of the entire resource template.
10793 Enhanced the compiler debug output to dump the entire original parse tree
10794 constructed during the parse phase, before any transforms are applied to
10796 tree. The transformed tree is dumped also.
10798 ----------------------------------------
10799 02 November 2005. Summary of changes for version 20051102:
10801 1) ACPI CA Core Subsystem:
10803 Modified the subsystem initialization sequence to improve GPE support.
10805 GPE initialization has been split into two parts in order to defer
10807 of the _PRW methods (Power Resources for Wake) until after the hardware
10809 fully initialized and the SCI handler is installed. This allows the _PRW
10810 methods to access fields protected by the Global Lock. This will fix
10812 where a NO_GLOBAL_LOCK exception has been seen during initialization.
10814 Converted the ACPI internal object disassemble and display code within
10816 AML debugger to fully table-driven operation, reducing code size and
10817 increasing maintainability.
10819 Fixed a regression with the ConcatenateResTemplate() ASL operator
10821 in the 20051021 release.
10823 Implemented support for "local" internal ACPI object types within the
10824 debugger "Object" command and the AcpiWalkNamespace external interfaces.
10825 These local types include RegionFields, BankFields, IndexFields, Alias,
10829 Moved common AML resource handling code into a new file, "utresrc.c".
10831 code is shared by both the Resource Manager and the AML Debugger.
10833 Code and Data Size: The current and previous library sizes for the core
10834 subsystem are shown below. These are the code and data sizes for the
10835 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10837 values do not include any ACPI driver or OSPM code. The debug version of
10839 code includes the debug output trace mechanism and has a much larger code
10840 and data size. Note that these values will vary depending on the
10842 of the compiler and the compiler options used during generation.
10845 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10846 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10848 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
10849 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
10852 2) iASL Compiler/Disassembler:
10854 Fixed a problem with very large initializer lists (more than 4000
10856 for both Buffer and Package objects where the parse stack could overflow.
10858 Enhanced the pre-compile source code scan for non-ASCII characters to
10860 characters within comment fields. The scan is now always performed and is
10862 longer optional, detecting invalid characters within a source file
10863 immediately rather than during the parse phase or later.
10865 Enhanced the ASL grammar definition to force early reductions on all
10867 style grammar elements so that the overall parse stack usage is greatly
10868 reduced. This should improve performance and reduce the possibility of
10872 Eliminated all reduce/reduce conflicts in the iASL parser generation.
10874 with the addition of a %expected statement, the compiler generates from
10875 source with no warnings.
10877 Fixed a possible segment fault in the disassembler if the input filename
10878 does not contain a "dot" extension (Thomas Renninger).
10880 ----------------------------------------
10881 21 October 2005. Summary of changes for version 20051021:
10883 1) ACPI CA Core Subsystem:
10885 Implemented support for the EM64T and other x86-64 processors. This
10886 essentially entails recognizing that these processors support non-aligned
10887 memory transfers. Previously, all 64-bit processors were assumed to lack
10888 hardware support for non-aligned transfers.
10890 Completed conversion of the Resource Manager to nearly full table-driven
10891 operation. Specifically, the resource conversion code (convert AML to
10892 internal format and the reverse) and the debug code to dump internal
10893 resource descriptors are fully table-driven, reducing code and data size
10895 improving maintainability.
10897 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
10899 on 64-bit processors instead of a fixed 32-bit word. (With assistance
10901 Alexey Starikovskiy)
10903 Implemented support within the resource conversion code for the Type-
10904 Specific byte within the various ACPI 3.0 *WordSpace macros.
10906 Fixed some issues within the resource conversion code for the type-
10908 flags for both Memory and I/O address resource descriptors. For Memory,
10909 implemented support for the MTP and TTP flags. For I/O, split the TRS and
10910 TTP flags into two separate fields.
10912 Code and Data Size: The current and previous library sizes for the core
10913 subsystem are shown below. These are the code and data sizes for the
10914 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
10916 values do not include any ACPI driver or OSPM code. The debug version of
10918 code includes the debug output trace mechanism and has a much larger code
10919 and data size. Note that these values will vary depending on the
10921 of the compiler and the compiler options used during generation.
10924 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
10925 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
10927 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
10928 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
10932 2) iASL Compiler/Disassembler:
10934 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
10936 corresponding ResourceSource string was not also present in a resource
10937 descriptor declaration. This restriction caused problems with existing
10938 AML/ASL code that includes the Index byte without the string. When such
10940 was disassembled, it could not be compiled without modification. Further,
10941 the modified code created a resource template with a different size than
10943 original, breaking code that used fixed offsets into the resource
10947 Removed a recent feature of the disassembler to ignore a lone
10949 byte. This byte is now emitted if present so that the exact AML can be
10950 reproduced when the disassembled code is recompiled.
10952 Improved comments and text alignment for the resource descriptor code
10953 emitted by the disassembler.
10955 Implemented disassembler support for the ACPI 3.0 AccessSize field within
10957 Register() resource descriptor.
10959 ----------------------------------------
10960 30 September 2005. Summary of changes for version 20050930:
10962 1) ACPI CA Core Subsystem:
10964 Completed a major overhaul of the Resource Manager code - specifically,
10965 optimizations in the area of the AML/internal resource conversion code.
10967 code has been optimized to simplify and eliminate duplicated code, CPU
10969 use has been decreased by optimizing function parameters and local
10970 variables, and naming conventions across the manager have been
10972 for clarity and ease of maintenance (this includes function, parameter,
10973 variable, and struct/typedef names.) The update may force changes in some
10974 driver code, depending on how resources are handled by the host OS.
10976 All Resource Manager dispatch and information tables have been moved to a
10977 single location for clarity and ease of maintenance. One new file was
10978 created, named "rsinfo.c".
10980 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
10981 guarantee that the argument is not evaluated twice, making them less
10983 to macro side-effects. However, since there exists the possibility of
10984 additional stack use if a particular compiler cannot optimize them (such
10986 in the debug generation case), the original macros are optionally
10988 Note that some invocations of the return_VALUE macro may now cause size
10989 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
10991 eliminate these. (From Randy Dunlap)
10993 Implemented a new mechanism to enable debug tracing for individual
10995 methods. A new external interface, AcpiDebugTrace, is provided to enable
10996 this mechanism. The intent is to allow the host OS to easily enable and
10997 disable tracing for problematic control methods. This interface can be
10998 easily exposed to a user or debugger interface if desired. See the file
10999 psxface.c for details.
11001 AcpiUtCallocate will now return a valid pointer if a length of zero is
11002 specified - a length of one is used and a warning is issued. This matches
11003 the behavior of AcpiUtAllocate.
11005 Code and Data Size: The current and previous library sizes for the core
11006 subsystem are shown below. These are the code and data sizes for the
11007 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11009 values do not include any ACPI driver or OSPM code. The debug version of
11011 code includes the debug output trace mechanism and has a much larger code
11012 and data size. Note that these values will vary depending on the
11014 of the compiler and the compiler options used during generation.
11017 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11018 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11020 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
11021 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
11024 2) iASL Compiler/Disassembler:
11026 A remark is issued if the effective compile-time length of a package or
11027 buffer is zero. Previously, this was a warning.
11029 ----------------------------------------
11030 16 September 2005. Summary of changes for version 20050916:
11032 1) ACPI CA Core Subsystem:
11034 Fixed a problem within the Resource Manager where support for the Generic
11035 Register descriptor was not fully implemented. This descriptor is now
11037 recognized, parsed, disassembled, and displayed.
11039 Completely restructured the Resource Manager code to utilize table-driven
11040 dispatch and lookup, eliminating many of the large switch() statements.
11042 reduces overall subsystem code size and code complexity. Affects the
11043 resource parsing and construction, disassembly, and debug dump output.
11045 Cleaned up and restructured the debug dump output for all resource
11046 descriptors. Improved readability of the output and reduced code size.
11048 Fixed a problem where changes to internal data structures caused the
11049 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
11051 Code and Data Size: The current and previous library sizes for the core
11052 subsystem are shown below. These are the code and data sizes for the
11053 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
11055 values do not include any ACPI driver or OSPM code. The debug version of
11057 code includes the debug output trace mechanism and has a much larger code
11058 and data size. Note that these values will vary depending on the
11060 of the compiler and the compiler options used during generation.
11063 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11064 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11066 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
11067 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
11070 2) iASL Compiler/Disassembler:
11072 Updated the disassembler to automatically insert an EndDependentFn()
11074 into the ASL stream if this macro is missing in the original AML code,
11075 simplifying compilation of the resulting ASL module.
11077 Fixed a problem in the disassembler where a disassembled ResourceSource
11078 string (within a large resource descriptor) was not surrounded by quotes
11080 not followed by a comma, causing errors when the resulting ASL module was
11081 compiled. Also, escape sequences within a ResourceSource string are now
11082 handled correctly (especially "\\")
11084 ----------------------------------------
11085 02 September 2005. Summary of changes for version 20050902:
11087 1) ACPI CA Core Subsystem:
11089 Fixed a problem with the internal Owner ID allocation and deallocation
11090 mechanisms for control method execution and recursive method invocation.
11091 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
11092 messages seen on some systems. Recursive method invocation depth is
11093 currently limited to 255. (Alexey Starikovskiy)
11095 Completely eliminated all vestiges of support for the "module-level
11096 executable code" until this support is fully implemented and debugged.
11098 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
11099 some systems that invoke this support.
11101 Fixed a problem within the resource manager code where the transaction
11103 for a 64-bit address descriptor were handled incorrectly in the type-
11104 specific flag byte.
11106 Consolidated duplicate code within the address descriptor resource
11108 code, reducing overall subsystem code size.
11110 Fixed a fault when using the AML debugger "disassemble" command to
11111 disassemble individual control methods.
11113 Removed references to the "release_current" directory within the Unix
11116 Code and Data Size: The current and previous core subsystem library sizes
11117 are shown below. These are the code and data sizes for the acpica.lib
11118 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
11119 include any ACPI driver or OSPM code. The debug version of the code
11121 the debug output trace mechanism and has a much larger code and data
11123 Note that these values will vary depending on the efficiency of the
11125 and the compiler options used during generation.
11128 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11129 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11131 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
11132 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
11135 2) iASL Compiler/Disassembler:
11137 Implemented an error check for illegal duplicate values in the interrupt
11139 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
11142 Implemented error checking for the Irq() and IrqNoFlags() macros to
11144 too many values in the interrupt list (16 max) and invalid values in the
11145 list (range 0 - 15)
11147 The maximum length string literal within an ASL file is now restricted to
11148 200 characters as per the ACPI specification.
11150 Fixed a fault when using the -ln option (generate namespace listing).
11152 Implemented an error check to determine if a DescriptorName within a
11153 resource descriptor has already been used within the current scope.
11155 ----------------------------------------
11156 15 August 2005. Summary of changes for version 20050815:
11158 1) ACPI CA Core Subsystem:
11160 Implemented a full bytewise compare to determine if a table load request
11162 attempting to load a duplicate table. The compare is performed if the
11164 signatures and table lengths match. This will allow different tables with
11165 the same OEM Table ID and revision to be loaded - probably against the
11167 specification, but discovered in the field nonetheless.
11169 Added the changes.txt logfile to each of the zipped release packages.
11171 Code and Data Size: Current and previous core subsystem library sizes are
11172 shown below. These are the code and data sizes for the acpica.lib
11174 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11175 any ACPI driver or OSPM code. The debug version of the code includes the
11176 debug output trace mechanism and has a much larger code and data size.
11178 that these values will vary depending on the efficiency of the compiler
11180 the compiler options used during generation.
11183 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11184 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11186 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11187 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
11190 2) iASL Compiler/Disassembler:
11192 Fixed a problem where incorrect AML code could be generated for Package
11193 objects if optimization is disabled (via the -oa switch).
11195 Fixed a problem with where incorrect AML code is generated for variable-
11196 length packages when the package length is not specified and the number
11198 initializer values is greater than 255.
11201 ----------------------------------------
11202 29 July 2005. Summary of changes for version 20050729:
11204 1) ACPI CA Core Subsystem:
11206 Implemented support to ignore an attempt to install/load a particular
11208 table more than once. Apparently there exists BIOS code that repeatedly
11209 attempts to load the same SSDT upon certain events. With assistance from
11210 Venkatesh Pallipadi.
11212 Restructured the main interface to the AML parser in order to correctly
11213 handle all exceptional conditions. This will prevent leakage of the
11215 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
11217 machines. With assistance from Alexey Starikovskiy.
11219 Support for "module level code" has been disabled in this version due to
11221 number of issues that have appeared on various machines. The support can
11223 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
11224 compilation. When the issues are fully resolved, the code will be enabled
11228 Modified the internal functions for debug print support to define the
11229 FunctionName parameter as a (const char *) for compatibility with
11231 built-in macros such as __FUNCTION__, etc.
11233 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
11235 Implemented support to display an object count summary for the AML
11237 commands Object and Methods.
11239 Code and Data Size: Current and previous core subsystem library sizes are
11240 shown below. These are the code and data sizes for the acpica.lib
11242 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11243 any ACPI driver or OSPM code. The debug version of the code includes the
11244 debug output trace mechanism and has a much larger code and data size.
11246 that these values will vary depending on the efficiency of the compiler
11248 the compiler options used during generation.
11251 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11252 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11254 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
11255 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
11258 2) iASL Compiler/Disassembler:
11260 Fixed a regression that appeared in the 20050708 version of the compiler
11261 where an error message was inadvertently emitted for invocations of the
11263 reserved control method.
11265 ----------------------------------------
11266 08 July 2005. Summary of changes for version 20050708:
11268 1) ACPI CA Core Subsystem:
11270 The use of the CPU stack in the debug version of the subsystem has been
11271 considerably reduced. Previously, a debug structure was declared in every
11272 function that used the debug macros. This structure has been removed in
11273 favor of declaring the individual elements as parameters to the debug
11274 functions. This reduces the cumulative stack use during nested execution
11276 ACPI function calls at the cost of a small increase in the code size of
11278 debug version of the subsystem. With assistance from Alexey Starikovskiy
11282 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
11283 headers to define a macro that will return the current function name at
11284 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
11286 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
11287 compiler-dependent header, the function name is saved on the CPU stack
11289 pointer per function.) This mechanism is used because apparently there
11290 exists no standard ANSI-C defined macro that that returns the function
11293 Redesigned and reimplemented the "Owner ID" mechanism used to track
11294 namespace objects created/deleted by ACPI tables and control method
11295 execution. A bitmap is now used to allocate and free the IDs, thus
11297 the wraparound problem present in the previous implementation. The size
11299 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
11302 Removed the UINT32_BIT and UINT16_BIT types that were used for the
11304 flag definitions within the headers for the predefined ACPI tables. These
11305 have been replaced by UINT8_BIT in order to increase the code portability
11307 the subsystem. If the use of UINT8 remains a problem, we may be forced to
11308 eliminate bitfields entirely because of a lack of portability.
11310 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
11312 is a frequently used function and this improvement increases the
11314 of the entire subsystem (Alexey Starikovskiy).
11316 Fixed several possible memory leaks and the inverse - premature object
11317 deletion (Alexey Starikovskiy).
11319 Code and Data Size: Current and previous core subsystem library sizes are
11320 shown below. These are the code and data sizes for the acpica.lib
11322 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11323 any ACPI driver or OSPM code. The debug version of the code includes the
11324 debug output trace mechanism and has a much larger code and data size.
11326 that these values will vary depending on the efficiency of the compiler
11328 the compiler options used during generation.
11331 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11332 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11334 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
11335 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
11337 ----------------------------------------
11338 24 June 2005. Summary of changes for version 20050624:
11340 1) ACPI CA Core Subsystem:
11342 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
11343 the host-defined cache object. This allows the OSL implementation to
11345 and type this object in any manner desired, simplifying the OSL
11346 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
11347 Linux, and should be defined in the OS-specific header file for other
11348 operating systems as required.
11350 Changed the interface to AcpiOsAcquireObject to directly return the
11351 requested object as the function return (instead of ACPI_STATUS.) This
11352 change was made for performance reasons, since this is the purpose of the
11353 interface in the first place. AcpiOsAcquireObject is now similar to the
11354 AcpiOsAllocate interface.
11356 Implemented a new AML debugger command named Businfo. This command
11358 information about all devices that have an associate _PRT object. The
11360 _HID, _UID, and _CID are displayed for these devices.
11362 Modified the initialization sequence in AcpiInitializeSubsystem to call
11364 OSL interface AcpiOslInitialize first, before any local initialization.
11366 change was required because the global initialization now calls OSL
11369 Enhanced the Dump command to display the entire contents of Package
11371 (including all sub-objects and their values.)
11373 Restructured the code base to split some files because of size and/or
11374 because the code logically belonged in a separate file. New files are
11376 below. All makefiles and project files included in the ACPI CA release
11379 utilities/utcache.c /* Local cache interfaces */
11380 utilities/utmutex.c /* Local mutex support */
11381 utilities/utstate.c /* State object support */
11382 interpreter/parser/psloop.c /* Main AML parse loop */
11384 Code and Data Size: Current and previous core subsystem library sizes are
11385 shown below. These are the code and data sizes for the acpica.lib
11387 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11388 any ACPI driver or OSPM code. The debug version of the code includes the
11389 debug output trace mechanism and has a much larger code and data size.
11391 that these values will vary depending on the efficiency of the compiler
11393 the compiler options used during generation.
11396 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11397 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11399 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
11400 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
11403 2) iASL Compiler/Disassembler:
11405 Fixed a regression introduced in version 20050513 where the use of a
11407 object within a Case() statement caused a compile time exception. The
11408 original behavior has been restored (a Match() operator is emitted.)
11410 ----------------------------------------
11411 17 June 2005. Summary of changes for version 20050617:
11413 1) ACPI CA Core Subsystem:
11415 Moved the object cache operations into the OS interface layer (OSL) to
11417 the host OS to handle these operations if desired (for example, the Linux
11418 OSL will invoke the slab allocator). This support is optional; the
11420 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
11422 code in the ACPI CA core. The new OSL interfaces are shown below. See
11423 utalloc.c for an example implementation, and acpiosxf.h for the exact
11424 interface definitions. With assistance from Alexey Starikovskiy.
11428 AcpiOsAcquireObject
11429 AcpiOsReleaseObject
11431 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
11433 and restore a flags parameter. This fits better with many OS lock models.
11434 Note: the current execution state (interrupt handler or not) is no longer
11435 passed to these interfaces. If necessary, the OSL must determine this
11437 by itself, a simple and fast operation. With assistance from Alexey
11440 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
11441 present if the revision of the RSDP was 2 or greater. According to the
11443 specification, the XSDT is optional in all cases, and the table manager
11444 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
11445 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
11449 Fixed an interpreter problem with the Mid() operator in the case of an
11451 string where the resulting output string is of zero length. It now
11453 returns a valid, null terminated string object instead of a string object
11454 with a null pointer.
11456 Fixed a problem with the control method argument handling to allow a
11458 to an Arg object that already contains an object of type Device. The
11460 object is now correctly overwritten. Previously, an error was returned.
11463 Enhanced the debugger Find command to emit object values in addition to
11465 found object pathnames. The output format is the same as the dump
11469 Enhanced the debugger Set command. It now has the ability to set the
11471 of any Named integer object in the namespace (Previously, only method
11473 and args could be set.)
11475 Code and Data Size: Current and previous core subsystem library sizes are
11476 shown below. These are the code and data sizes for the acpica.lib
11478 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11479 any ACPI driver or OSPM code. The debug version of the code includes the
11480 debug output trace mechanism and has a much larger code and data size.
11482 that these values will vary depending on the efficiency of the compiler
11484 the compiler options used during generation.
11487 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11488 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11490 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
11491 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
11494 2) iASL Compiler/Disassembler:
11496 Fixed a regression in the disassembler where if/else/while constructs
11498 output incorrectly. This problem was introduced in the previous release
11499 (20050526). This problem also affected the single-step disassembly in the
11502 Fixed a problem where compiling the reserved _OSI method would randomly
11504 rarely) produce compile errors.
11506 Enhanced the disassembler to emit compilable code in the face of
11508 AML resource descriptors. If the optional ResourceSourceIndex is present,
11509 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
11510 disassembly. Otherwise, the resulting code cannot be compiled without
11513 ----------------------------------------
11514 26 May 2005. Summary of changes for version 20050526:
11516 1) ACPI CA Core Subsystem:
11518 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
11519 the module level (not within a control method.) These opcodes are
11521 exactly once at the time the table is loaded. This type of code was legal
11523 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
11525 order to provide backwards compatibility with earlier BIOS
11527 This eliminates the "Encountered executable code at module level" warning
11528 that was previously generated upon detection of such code.
11530 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
11531 inadvertently be generated during the lookup of namespace objects in the
11532 second pass parse of ACPI tables and control methods. It appears that
11534 problem could occur during the resolution of forward references to
11538 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
11539 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
11540 allows the deadlock detection debug code to be compiled out in the normal
11541 case, improving mutex performance (and overall subsystem performance)
11544 Implemented a handful of miscellaneous fixes for possible memory leaks on
11545 error conditions and error handling control paths. These fixes were
11546 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
11548 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
11550 to prevent a fault in this error case.
11552 Code and Data Size: Current and previous core subsystem library sizes are
11553 shown below. These are the code and data sizes for the acpica.lib
11555 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11556 any ACPI driver or OSPM code. The debug version of the code includes the
11557 debug output trace mechanism and has a much larger code and data size.
11559 that these values will vary depending on the efficiency of the compiler
11561 the compiler options used during generation.
11564 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11565 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11567 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
11568 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
11571 2) iASL Compiler/Disassembler:
11573 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
11574 the module level (not within a control method.) These operators will be
11575 executed once at the time the table is loaded. This type of code was
11577 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
11578 compiler in order to provide backwards compatibility with earlier BIOS
11582 The ACPI integer width (specified via the table revision ID or the -r
11583 override, 32 or 64 bits) is now used internally during compile-time
11585 folding to ensure that constants are truncated to 32 bits if necessary.
11586 Previously, the revision ID value was only emitted in the AML table
11589 An error message is now generated for the Mutex and Method operators if
11591 SyncLevel parameter is outside the legal range of 0 through 15.
11593 Fixed a problem with the Method operator ParameterTypes list handling
11595 3.0). Previously, more than 2 types or 2 arguments generated a syntax
11597 The actual underlying implementation of method argument typechecking is
11598 still under development, however.
11600 ----------------------------------------
11601 13 May 2005. Summary of changes for version 20050513:
11603 1) ACPI CA Core Subsystem:
11605 Implemented support for PCI Express root bridges -- added support for
11607 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
11609 The interpreter now automatically truncates incoming 64-bit constants to
11611 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
11613 also affects the iASL compiler constant folding. (Note: as per below, the
11614 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
11616 Fixed a problem where string and buffer objects with "static" pointers
11617 (pointers to initialization data within an ACPI table) were not handled
11618 consistently. The internal object copy operation now always copies the
11620 to a newly allocated buffer, regardless of whether the source object is
11623 Fixed a problem with the FromBCD operator where an implicit result
11624 conversion was improperly performed while storing the result to the
11626 operand. Since this is an "explicit conversion" operator, the implicit
11627 conversion should never be performed on the output.
11629 Fixed a problem with the CopyObject operator where a copy to an existing
11630 named object did not always completely overwrite the existing object
11632 at name. Specifically, a buffer-to-buffer copy did not delete the
11636 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
11638 structs for consistency.
11640 Code and Data Size: Current and previous core subsystem library sizes are
11641 shown below. These are the code and data sizes for the acpica.lib
11643 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11644 any ACPI driver or OSPM code. The debug version of the code includes the
11645 debug output trace mechanism and has a much larger code and data size.
11647 that these values will vary depending on the efficiency of the compiler
11649 the compiler options used during generation.
11652 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11653 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11654 Current Release: (Same sizes)
11655 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11656 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11659 2) iASL Compiler/Disassembler:
11661 The compiler now emits a warning if an attempt is made to generate a 64-
11663 integer constant from within a 32-bit ACPI table (Revision < 2). The
11665 is truncated to 32 bits.
11667 Fixed a problem with large package objects: if the static length of the
11668 package is greater than 255, the "variable length package" opcode is
11669 emitted. Previously, this caused an error. This requires an update to the
11670 ACPI spec, since it currently (incorrectly) states that packages larger
11672 255 elements are not allowed.
11674 The disassembler now correctly handles variable length packages and
11676 larger than 255 elements.
11678 ----------------------------------------
11679 08 April 2005. Summary of changes for version 20050408:
11681 1) ACPI CA Core Subsystem:
11683 Fixed three cases in the interpreter where an "index" argument to an ASL
11684 function was still (internally) 32 bits instead of the required 64 bits.
11685 This was the Index argument to the Index, Mid, and Match operators.
11687 The "strupr" function is now permanently local (AcpiUtStrupr), since this
11689 not a POSIX-defined function and not present in most kernel-level C
11690 libraries. All references to the C library strupr function have been
11694 Completed the deployment of static functions/prototypes. All prototypes
11696 the static attribute have been moved from the headers to the owning C
11699 Implemented an extract option (-e) for the AcpiBin utility (AML binary
11700 utility). This option allows the utility to extract individual ACPI
11702 from the output of AcpiDmp. It provides the same functionality of the
11703 acpixtract.pl perl script without the worry of setting the correct perl
11704 options. AcpiBin runs on Windows and has not yet been generated/validated
11706 the Linux/Unix environment (but should be soon).
11708 Updated and fixed the table dump option for AcpiBin (-d). This option
11709 converts a single ACPI table to a hex/ascii file, similar to the output
11713 Code and Data Size: Current and previous core subsystem library sizes are
11714 shown below. These are the code and data sizes for the acpica.lib
11716 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11717 any ACPI driver or OSPM code. The debug version of the code includes the
11718 debug output trace mechanism and has a much larger code and data size.
11720 that these values will vary depending on the efficiency of the compiler
11722 the compiler options used during generation.
11725 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11726 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11728 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
11729 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
11732 2) iASL Compiler/Disassembler:
11734 Disassembler fix: Added a check to ensure that the table length found in
11736 ACPI table header within the input file is not longer than the actual
11738 file size. This indicates some kind of file or table corruption.
11740 ----------------------------------------
11741 29 March 2005. Summary of changes for version 20050329:
11743 1) ACPI CA Core Subsystem:
11745 An error is now generated if an attempt is made to create a Buffer Field
11747 length zero (A CreateField with a length operand of zero.)
11749 The interpreter now issues a warning whenever executable code at the
11751 level is detected during ACPI table load. This will give some idea of the
11752 prevalence of this type of code.
11754 Implemented support for references to named objects (other than control
11755 methods) within package objects.
11757 Enhanced package object output for the debug object. Package objects are
11759 completely dumped, showing all elements.
11761 Enhanced miscellaneous object output for the debug object. Any object can
11762 now be written to the debug object (for example, a device object can be
11763 written, and the type of the object will be displayed.)
11765 The "static" qualifier has been added to all local functions across both
11767 core subsystem and the iASL compiler.
11769 The number of "long" lines (> 80 chars) within the source has been
11770 significantly reduced, by about 1/3.
11772 Cleaned up all header files to ensure that all CA/iASL functions are
11773 prototyped (even static functions) and the formatting is consistent.
11775 Two new header files have been added, acopcode.h and acnames.h.
11777 Removed several obsolete functions that were no longer used.
11779 Code and Data Size: Current and previous core subsystem library sizes are
11780 shown below. These are the code and data sizes for the acpica.lib
11782 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11783 any ACPI driver or OSPM code. The debug version of the code includes the
11784 debug output trace mechanism and has a much larger code and data size.
11786 that these values will vary depending on the efficiency of the compiler
11788 the compiler options used during generation.
11791 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11792 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11794 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
11795 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
11799 2) iASL Compiler/Disassembler:
11801 Fixed a problem with the resource descriptor generation/support. For the
11802 ResourceSourceIndex and the ResourceSource fields, both must be present,
11804 both must be not present - can't have one without the other.
11806 The compiler now returns non-zero from the main procedure if any errors
11808 occurred during the compilation.
11811 ----------------------------------------
11812 09 March 2005. Summary of changes for version 20050309:
11814 1) ACPI CA Core Subsystem:
11816 The string-to-buffer implicit conversion code has been modified again
11818 a change to the ACPI specification. In order to match the behavior of
11820 other major ACPI implementation, the target buffer is no longer truncated
11822 the source string is smaller than an existing target buffer. This change
11823 requires an update to the ACPI spec, and should eliminate the recent
11824 AE_AML_BUFFER_LIMIT issues.
11826 The "implicit return" support was rewritten to a new algorithm that
11828 the general case. Rather than attempt to determine when a method is about
11830 exit, the result of every ASL operator is saved momentarily until the
11832 next ASL operator is executed. Therefore, no matter how the method exits,
11833 there will always be a saved implicit return value. This feature is only
11834 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
11836 AE_AML_NO_RETURN_VALUE errors when enabled.
11838 Implemented implicit conversion support for the predicate (operand) of
11840 If, Else, and While operators. String and Buffer arguments are
11842 converted to Integers.
11844 Changed the string-to-integer conversion behavior to match the new ACPI
11845 errata: "If no integer object exists, a new integer is created. The ASCII
11846 string is interpreted as a hexadecimal constant. Each string character is
11847 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
11848 with the first character as the most significant digit, and ending with
11850 first non-hexadecimal character or end-of-string." This means that the
11852 non-hex character terminates the conversion and this is the code that was
11855 Fixed a problem where the ObjectType operator would fail (fault) when
11857 on an Index of a Package which pointed to a null package element. The
11858 operator now properly returns zero (Uninitialized) in this case.
11860 Fixed a problem where the While operator used excessive memory by not
11861 properly popping the result stack during execution. There was no memory
11863 after execution, however. (Code provided by Valery Podrezov.)
11865 Fixed a problem where references to control methods within Package
11867 caused the method to be invoked, instead of producing a reference object
11868 pointing to the method.
11870 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
11872 improve performance and reduce code size. (Code provided by Alexey
11875 Code and Data Size: Current and previous core subsystem library sizes are
11876 shown below. These are the code and data sizes for the acpica.lib
11878 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11879 any ACPI driver or OSPM code. The debug version of the code includes the
11880 debug output trace mechanism and has a much larger code and data size.
11882 that these values will vary depending on the efficiency of the compiler
11884 the compiler options used during generation.
11887 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11888 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
11890 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
11891 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
11894 2) iASL Compiler/Disassembler:
11896 Fixed a problem with the Return operator with no arguments. Since the AML
11897 grammar for the byte encoding requires an operand for the Return opcode,
11899 compiler now emits a Return(Zero) for this case. An ACPI specification
11900 update has been written for this case.
11902 For tables other than the DSDT, namepath optimization is automatically
11903 disabled. This is because SSDTs can be loaded anywhere in the namespace,
11905 compiler has no knowledge of where, and thus cannot optimize namepaths.
11907 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
11908 inadvertently omitted from the ACPI specification, and will require an
11909 update to the spec.
11911 The source file scan for ASCII characters is now optional (-a). This
11913 was made because some vendors place non-ascii characters within comments.
11914 However, the scan is simply a brute-force byte compare to ensure all
11915 characters in the file are in the range 0x00 to 0x7F.
11917 Fixed a problem with the CondRefOf operator where the compiler was
11918 inappropriately checking for the existence of the target. Since the point
11920 the operator is to check for the existence of the target at run-time, the
11921 compiler no longer checks for the target existence.
11923 Fixed a problem where errors generated from the internal AML interpreter
11924 during constant folding were not handled properly, causing a fault.
11926 Fixed a problem with overly aggressive range checking for the Stall
11927 operator. The valid range (max 255) is now only checked if the operand is
11929 type Integer. All other operand types cannot be statically checked.
11931 Fixed a problem where control method references within the RefOf,
11933 and ObjectType operators were not treated properly. They are now treated
11935 actual references, not method invocations.
11937 Fixed and enhanced the "list namespace" option (-ln). This option was
11939 a number of releases ago.
11941 Improved error handling for the Field, IndexField, and BankField
11943 The compiler now cleanly reports and recovers from errors in the field
11944 component (FieldUnit) list.
11946 Fixed a disassembler problem where the optional ResourceDescriptor fields
11947 TRS and TTP were not always handled correctly.
11949 Disassembler - Comments in output now use "//" instead of "/*"
11951 ----------------------------------------
11952 28 February 2005. Summary of changes for version 20050228:
11954 1) ACPI CA Core Subsystem:
11956 Fixed a problem where the result of an Index() operator (an object
11957 reference) must increment the reference count on the target object for
11959 life of the object reference.
11961 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
11962 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
11964 resource descriptors.
11966 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
11967 Space Descriptor" string, indicating interpreter support for the
11971 Implemented header support for the new ACPI 3.0 FADT flag bits.
11973 Implemented header support for the new ACPI 3.0 PCI Express bits for the
11975 status/enable registers.
11977 Updated header support for the MADT processor local Apic struct and MADT
11978 platform interrupt source struct for new ACPI 3.0 fields.
11980 Implemented header support for the SRAT and SLIT ACPI tables.
11982 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
11986 Code and Data Size: Current and previous core subsystem library sizes are
11987 shown below. These are the code and data sizes for the acpica.lib
11989 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11990 any ACPI driver or OSPM code. The debug version of the code includes the
11991 debug output trace mechanism and has a much larger code and data size.
11993 that these values will vary depending on the efficiency of the compiler
11995 the compiler options used during generation.
11998 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
11999 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12001 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12002 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
12005 2) iASL Compiler/Disassembler:
12007 Fixed a problem with the internal 64-bit String-to-integer conversion
12009 strings less than two characters long.
12011 Fixed a problem with constant folding where the result of the Index()
12012 operator can not be considered a constant. This means that Index() cannot
12014 a type3 opcode and this will require an update to the ACPI specification.
12016 Disassembler: Implemented support for the TTP, MTP, and TRS resource
12017 descriptor fields. These fields were inadvertently ignored and not output
12019 the disassembly of the resource descriptor.
12022 ----------------------------------------
12023 11 February 2005. Summary of changes for version 20050211:
12025 1) ACPI CA Core Subsystem:
12027 Implemented ACPI 3.0 support for implicit conversion within the Match()
12028 operator. MatchObjects can now be of type integer, buffer, or string
12030 of just type integer. Package elements are implicitly converted to the
12032 of the MatchObject. This change aligns the behavior of Match() with the
12033 behavior of the other logical operators (LLess(), etc.) It also requires
12035 errata change to the ACPI specification as this support was intended for
12036 ACPI 3.0, but was inadvertently omitted.
12038 Fixed a problem with the internal implicit "to buffer" conversion.
12040 that are converted to buffers will cause buffer truncation if the string
12042 smaller than the target buffer. Integers that are converted to buffers
12044 not cause buffer truncation, only zero extension (both as per the ACPI
12045 spec.) The problem was introduced when code was added to truncate the
12046 buffer, but this should not be performed in all cases, only the string
12049 Fixed a problem with the Buffer and Package operators where the
12051 would get confused if two such operators were used as operands to an ASL
12052 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
12053 stack was not being popped after the execution of these operators,
12055 in an AE_NO_RETURN_VALUE exception.
12057 Fixed a problem with constructs of the form Store(Index(...),...). The
12058 reference object returned from Index was inadvertently resolved to an
12060 value. This problem was introduced in version 20050114 when the behavior
12062 Store() was modified to restrict the object types that can be used as the
12063 source operand (to match the ACPI specification.)
12065 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
12067 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
12069 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
12071 Code and Data Size: Current and previous core subsystem library sizes are
12072 shown below. These are the code and data sizes for the acpica.lib
12074 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12075 any ACPI driver or OSPM code. The debug version of the code includes the
12076 debug output trace mechanism and has a much larger code and data size.
12078 that these values will vary depending on the efficiency of the compiler
12080 the compiler options used during generation.
12083 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12084 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12086 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
12087 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
12090 2) iASL Compiler/Disassembler:
12092 Fixed a code generation problem in the constant folding optimization code
12093 where incorrect code was generated if a constant was reduced to a buffer
12094 object (i.e., a reduced type 5 opcode.)
12096 Fixed a typechecking problem for the ToBuffer operator. Caused by an
12097 incorrect return type in the internal opcode information table.
12099 ----------------------------------------
12100 25 January 2005. Summary of changes for version 20050125:
12102 1) ACPI CA Core Subsystem:
12104 Fixed a recently introduced problem with the Global Lock where the
12105 underlying semaphore was not created. This problem was introduced in
12106 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
12107 Acquire() operation on _GL.
12109 The local object cache is now optional, and is disabled by default. Both
12110 AcpiExec and the iASL compiler enable the cache because they run in user
12111 mode and this enhances their performance. #define
12112 ACPI_ENABLE_OBJECT_CACHE
12113 to enable the local cache.
12115 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
12117 optional "implicit return" support where an error was returned if no
12119 object was expected, but one was implicitly returned. AE_OK is now
12121 in this case and the implicitly returned object is deleted.
12122 AcpiUtEvaluateObject is only occasionally used, and only to execute
12124 methods such as _STA and _INI where the return type is known up front.
12126 Fixed a few issues with the internal convert-to-integer code. It now
12128 an error if an attempt is made to convert a null string, a string of only
12129 blanks/tabs, or a zero-length buffer. This affects both implicit
12131 and explicit conversion via the ToInteger() operator.
12133 The internal debug code in AcpiUtAcquireMutex has been commented out. It
12135 not needed for normal operation and should increase the performance of
12137 entire subsystem. The code remains in case it is needed for debug
12141 The AcpiExec source and makefile are included in the Unix/Linux package
12145 Code and Data Size: Current and previous core subsystem library sizes are
12146 shown below. These are the code and data sizes for the acpica.lib
12148 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12149 any ACPI driver or OSPM code. The debug version of the code includes the
12150 debug output trace mechanism and has a much larger code and data size.
12152 that these values will vary depending on the efficiency of the compiler
12154 the compiler options used during generation.
12157 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12158 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12160 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
12161 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
12163 2) iASL Compiler/Disassembler:
12165 Switch/Case support: A warning is now issued if the type of the Switch
12167 cannot be determined at compile time. For example, Switch(Arg0) will
12168 generate the warning, and the type is assumed to be an integer. As per
12170 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
12174 Switch/Case support: Implemented support for buffer and string objects as
12175 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
12176 buffers and strings.
12178 Switch/Case support: The emitted code for the LEqual() comparisons now
12180 the switch value as the first operand, not the second. The case value is
12182 the second operand, and this allows the case value to be implicitly
12183 converted to the type of the switch value, not the other way around.
12185 Switch/Case support: Temporary variables are now emitted immediately
12187 the control method, not at the global level. This means that there are
12189 36 temps available per-method, not 36 temps per-module as was the case
12191 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
12193 ----------------------------------------
12194 14 January 2005. Summary of changes for version 20050114:
12196 Added 2005 copyright to all module headers. This affects every module in
12197 the core subsystem, iASL compiler, and the utilities.
12199 1) ACPI CA Core Subsystem:
12201 Fixed an issue with the String-to-Buffer conversion code where the string
12202 null terminator was not included in the buffer after conversion, but
12204 is existing ASL that assumes the string null terminator is included. This
12206 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
12207 introduced in the previous version when the code was updated to correctly
12208 set the converted buffer size as per the ACPI specification. The ACPI
12210 is ambiguous and will be updated to specify that the null terminator must
12212 included in the converted buffer. This also affects the ToBuffer() ASL
12215 Fixed a problem with the Mid() ASL/AML operator where it did not work
12216 correctly on Buffer objects. Newly created sub-buffers were not being
12221 Fixed a problem in AcpiTbFindTable where incorrect string compares were
12222 performed on the OemId and OemTableId table header fields. These fields
12224 not null terminated, so strncmp is now used instead of strcmp.
12226 Implemented a restriction on the Store() ASL/AML operator to align the
12227 behavior with the ACPI specification. Previously, any object could be
12229 as the source operand. Now, the only objects that may be used are
12231 Buffers, Strings, Packages, Object References, and DDB Handles. If
12232 necessary, the original behavior can be restored by enabling the
12233 EnableInterpreterSlack flag.
12235 Enhanced the optional "implicit return" support to allow an implicit
12237 value from methods that are invoked externally via the AcpiEvaluateObject
12238 interface. This enables implicit returns from the _STA and _INI methods,
12241 Changed the Revision() ASL/AML operator to return the current version of
12243 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
12245 the supported ACPI version (This is the function of the _REV method).
12247 Updated the _REV predefined method to return the currently supported
12251 Implemented batch mode option for the AcpiExec utility (-b).
12253 Code and Data Size: Current and previous core subsystem library sizes are
12254 shown below. These are the code and data sizes for the acpica.lib
12256 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12257 any ACPI driver or OSPM code. The debug version of the code includes the
12258 debug output trace mechanism and has a much larger code and data size.
12260 that these values will vary depending on the efficiency of the compiler
12262 the compiler options used during generation.
12265 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12266 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12268 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
12269 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
12271 ----------------------------------------
12272 10 December 2004. Summary of changes for version 20041210:
12274 ACPI 3.0 support is nearing completion in both the iASL compiler and the
12275 ACPI CA core subsystem.
12277 1) ACPI CA Core Subsystem:
12279 Fixed a problem in the ToDecimalString operator where the resulting
12281 length was incorrectly calculated. The length is now calculated exactly,
12282 eliminating incorrect AE_STRING_LIMIT exceptions.
12284 Fixed a problem in the ToHexString operator to allow a maximum 200
12286 string to be produced.
12288 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
12290 routine where the length of the resulting buffer was not truncated to the
12291 new size (if the target buffer already existed).
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: 164.7K Code, 68.5K Data, 233.2K Total
12308 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12309 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
12312 2) iASL Compiler/Disassembler:
12314 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
12315 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
12316 Includes support in the disassembler.
12318 Implemented support for the new (ACPI 3.0) parameter to the Register
12322 Fixed a problem where the _HE resource name for the Interrupt macro was
12323 referencing bit 0 instead of bit 1.
12325 Implemented check for maximum 255 interrupts in the Interrupt macro.
12327 Fixed a problem with the predefined resource descriptor names where
12328 incorrect AML code was generated if the offset within the resource buffer
12329 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
12330 but did not update the surrounding package lengths.
12332 Changes to the Dma macro: All channels within the channel list must be
12334 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
12335 optional (default is BusMaster).
12337 Implemented check for maximum 7 data bytes for the VendorShort macro.
12339 The ReadWrite parameter is now optional for the Memory32 and similar
12342 ----------------------------------------
12343 03 December 2004. Summary of changes for version 20041203:
12345 1) ACPI CA Core Subsystem:
12347 The low-level field insertion/extraction code (exfldio) has been
12349 rewritten to eliminate unnecessary complexity, bugs, and boundary
12352 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
12354 operators where the input operand could be inadvertently deleted if no
12355 conversion was necessary (e.g., if the input to ToInteger was an Integer
12358 Fixed a problem with the ToDecimalString and ToHexString where an
12360 exception code was returned if the resulting string would be > 200 chars.
12361 AE_STRING_LIMIT is now returned.
12363 Fixed a problem with the Concatenate operator where AE_OK was always
12364 returned, even if the operation failed.
12366 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
12367 semaphores to be allocated.
12369 Code and Data Size: Current and previous core subsystem library sizes are
12370 shown below. These are the code and data sizes for the acpica.lib
12372 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12373 any ACPI driver or OSPM code. The debug version of the code includes the
12374 debug output trace mechanism and has a much larger code and data size.
12376 that these values will vary depending on the efficiency of the compiler
12378 the compiler options used during generation.
12381 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12382 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12384 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
12385 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
12388 2) iASL Compiler/Disassembler:
12390 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
12391 recently introduced in 20041119.
12393 Fixed a problem with the ToUUID macro where the upper nybble of each
12395 byte was inadvertently set to zero.
12397 ----------------------------------------
12398 19 November 2004. Summary of changes for version 20041119:
12400 1) ACPI CA Core Subsystem:
12402 Fixed a problem in the internal ConvertToInteger routine where new
12404 were not truncated to 32 bits for 32-bit ACPI tables. This routine
12406 buffers and strings to integers.
12408 Implemented support to store a value to an Index() on a String object.
12410 is an ACPI 2.0 feature that had not yet been implemented.
12412 Implemented new behavior for storing objects to individual package
12414 (via the Index() operator). The previous behavior was to invoke the
12416 conversion rules if an object was already present at the index. The new
12417 behavior is to simply delete any existing object and directly store the
12419 object. Although the ACPI specification seems unclear on this subject,
12421 ACPI implementations behave in this manner. (This is the root of the
12422 AE_BAD_HEX_CONSTANT issue.)
12424 Modified the RSDP memory scan mechanism to support the extended checksum
12426 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
12427 RSDP signature is found with a valid checksum.
12429 Code and Data Size: Current and previous core subsystem library sizes are
12430 shown below. These are the code and data sizes for the acpica.lib
12432 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12433 any ACPI driver or OSPM code. The debug version of the code includes the
12434 debug output trace mechanism and has a much larger code and data size.
12436 that these values will vary depending on the efficiency of the compiler
12438 the compiler options used during generation.
12441 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12442 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12444 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12445 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12448 2) iASL Compiler/Disassembler:
12450 Fixed a missing semicolon in the aslcompiler.y file.
12452 ----------------------------------------
12453 05 November 2004. Summary of changes for version 20041105:
12455 1) ACPI CA Core Subsystem:
12457 Implemented support for FADT revision 2. This was an interim table
12459 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
12461 Implemented optional support to allow uninitialized LocalX and ArgX
12462 variables in a control method. The variables are initialized to an
12464 object with a value of zero. This support is enabled by setting the
12465 AcpiGbl_EnableInterpreterSlack flag to TRUE.
12467 Implemented support for Integer objects for the SizeOf operator. Either
12469 or 8 is returned, depending on the current integer size (32-bit or 64-
12471 depending on the parent table revision).
12473 Fixed a problem in the implementation of the SizeOf and ObjectType
12475 where the operand was resolved to a value too early, causing incorrect
12476 return values for some objects.
12478 Fixed some possible memory leaks during exceptional conditions.
12480 Code and Data Size: Current and previous core subsystem library sizes are
12481 shown below. These are the code and data sizes for the acpica.lib
12483 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12484 any ACPI driver or OSPM code. The debug version of the code includes the
12485 debug output trace mechanism and has a much larger code and data size.
12487 that these values will vary depending on the efficiency of the compiler
12489 the compiler options used during generation.
12492 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12493 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12495 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
12496 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
12499 2) iASL Compiler/Disassembler:
12501 Implemented support for all ACPI 3.0 reserved names and methods.
12503 Implemented all ACPI 3.0 grammar elements in the front-end, including
12504 support for semicolons.
12506 Implemented the ACPI 3.0 Function() and ToUUID() macros
12508 Fixed a problem in the disassembler where a Scope() operator would not be
12509 emitted properly if the target of the scope was in another table.
12511 ----------------------------------------
12512 15 October 2004. Summary of changes for version 20041015:
12514 Note: ACPI CA is currently undergoing an in-depth and complete formal
12515 evaluation to test/verify the following areas. Other suggestions are
12516 welcome. This will result in an increase in the frequency of releases and
12517 the number of bug fixes in the next few months.
12518 - Functional tests for all ASL/AML operators
12519 - All implicit/explicit type conversions
12520 - Bit fields and operation regions
12521 - 64-bit math support and 32-bit-only "truncated" math support
12522 - Exceptional conditions, both compiler and interpreter
12523 - Dynamic object deletion and memory leaks
12524 - ACPI 3.0 support when implemented
12525 - External interfaces to the ACPI subsystem
12528 1) ACPI CA Core Subsystem:
12530 Fixed two alignment issues on 64-bit platforms - within debug statements
12532 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
12534 field within the non-aligned ACPI generic address structure.
12536 Fixed a problem in the Increment and Decrement operators where incorrect
12537 operand resolution could result in the inadvertent modification of the
12538 original integer when the integer is passed into another method as an
12539 argument and the arg is then incremented/decremented.
12541 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
12543 BCD number were truncated during conversion.
12545 Fixed a problem in the ToDecimal operator where the length of the
12547 string could be set incorrectly too long if the input operand was a
12551 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
12553 within a buffer would prematurely terminate a compare between buffer
12556 Added a check for string overflow (>200 characters as per the ACPI
12557 specification) during the Concatenate operator with two string operands.
12559 Code and Data Size: Current and previous core subsystem library sizes are
12560 shown below. These are the code and data sizes for the acpica.lib
12562 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12563 any ACPI driver or OSPM code. The debug version of the code includes the
12564 debug output trace mechanism and has a much larger code and data size.
12566 that these values will vary depending on the efficiency of the compiler
12568 the compiler options used during generation.
12571 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12572 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12574 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12575 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
12579 2) iASL Compiler/Disassembler:
12581 Allow the use of the ObjectType operator on uninitialized Locals and Args
12582 (returns 0 as per the ACPI specification).
12584 Fixed a problem where the compiler would fault if there was a syntax
12586 in the FieldName of all of the various CreateXXXField operators.
12588 Disallow the use of lower case letters within the EISAID macro, as per
12590 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
12592 U is an uppercase letter and N is a hex digit.
12595 ----------------------------------------
12596 06 October 2004. Summary of changes for version 20041006:
12598 1) ACPI CA Core Subsystem:
12600 Implemented support for the ACPI 3.0 Timer operator. This ASL function
12601 implements a 64-bit timer with 100 nanosecond granularity.
12603 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
12604 implement the ACPI 3.0 Timer operator. This allows the host OS to
12606 the timer with the best clock available. Also, it keeps the core
12608 out of the clock handling business, since the host OS (usually) performs
12611 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
12612 functions use a 64-bit address which is part of the packed ACPI Generic
12613 Address Structure. Since the structure is non-aligned, the alignment
12615 are now used to extract the address to a local variable before use.
12617 Fixed a problem where the ToInteger operator assumed all input strings
12619 hexadecimal. The operator now handles both decimal strings and hex
12621 (prefixed with "0x").
12623 Fixed a problem where the string length in the string object created as a
12624 result of the internal ConvertToString procedure could be incorrect. This
12625 potentially affected all implicit conversions and also the
12627 and ToHexString operators.
12629 Fixed two problems in the ToString operator. If the length parameter was
12630 zero, an incorrect string object was created and the value of the input
12631 length parameter was inadvertently changed from zero to Ones.
12633 Fixed a problem where the optional ResourceSource string in the
12635 resource macro was ignored.
12637 Simplified the interfaces to the internal division functions, reducing
12639 size and complexity.
12641 Code and Data Size: Current and previous core subsystem library sizes are
12642 shown below. These are the code and data sizes for the acpica.lib
12644 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12645 any ACPI driver or OSPM code. The debug version of the code includes the
12646 debug output trace mechanism and has a much larger code and data size.
12648 that these values will vary depending on the efficiency of the compiler
12650 the compiler options used during generation.
12653 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12654 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12656 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12657 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
12660 2) iASL Compiler/Disassembler:
12662 Implemented support for the ACPI 3.0 Timer operator.
12664 Fixed a problem where the Default() operator was inadvertently ignored in
12666 Switch/Case block. This was a problem in the translation of the Switch
12667 statement to If...Else pairs.
12669 Added support to allow a standalone Return operator, with no parentheses
12673 Fixed a problem with code generation for the ElseIf operator where the
12674 translated Else...If parse tree was improperly constructed leading to the
12677 ----------------------------------------
12678 22 September 2004. Summary of changes for version 20040922:
12680 1) ACPI CA Core Subsystem:
12682 Fixed a problem with the implementation of the LNot() operator where
12684 was not returned for the TRUE case. Changed the code to return Ones
12686 of (!Arg) which was usually 1. This change affects iASL constant folding
12688 this operator also.
12690 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
12692 initialized properly -- Now zero the entire buffer in this case where the
12693 buffer already exists.
12695 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
12696 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
12697 related code considerably. This will require changes/updates to all OS
12698 interface layers (OSLs.)
12700 Implemented a new external interface, AcpiInstallExceptionHandler, to
12702 a system exception handler to be installed. This handler is invoked upon
12704 run-time exception that occurs during control method execution.
12706 Added support for the DSDT in AcpiTbFindTable. This allows the
12707 DataTableRegion() operator to access the local copy of the DSDT.
12709 Code and Data Size: Current and previous core subsystem library sizes are
12710 shown below. These are the code and data sizes for the acpica.lib
12712 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12713 any ACPI driver or OSPM code. The debug version of the code includes the
12714 debug output trace mechanism and has a much larger code and data size.
12716 that these values will vary depending on the efficiency of the compiler
12718 the compiler options used during generation.
12721 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12722 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12724 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
12725 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
12728 2) iASL Compiler/Disassembler:
12730 Fixed a problem with constant folding and the LNot operator. LNot was
12731 returning 1 in the TRUE case, not Ones as per the ACPI specification.
12733 could result in the generation of an incorrect folded/reduced constant.
12735 End-Of-File is now allowed within a "//"-style comment. A parse error no
12736 longer occurs if such a comment is at the very end of the input ASL
12740 Implemented the "-r" option to override the Revision in the table header.
12741 The initial use of this option will be to simplify the evaluation of the
12743 interpreter by allowing a single ASL source module to be compiled for
12745 32-bit or 64-bit integers.
12748 ----------------------------------------
12749 27 August 2004. Summary of changes for version 20040827:
12751 1) ACPI CA Core Subsystem:
12753 - Implemented support for implicit object conversion in the non-numeric
12754 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
12756 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
12757 the second operand is implicitly converted on the fly to match the type
12759 the first operand. For example:
12761 LEqual (Source1, Source2)
12763 Source1 and Source2 must each evaluate to an integer, a string, or a
12765 The data type of Source1 dictates the required type of Source2. Source2
12767 implicitly converted if necessary to match the type of Source1.
12769 - Updated and corrected the behavior of the string conversion support.
12771 rules concerning conversion of buffers to strings (according to the ACPI
12772 specification) are as follows:
12774 ToDecimalString - explicit byte-wise conversion of buffer to string of
12775 decimal values (0-255) separated by commas. ToHexString - explicit byte-
12777 conversion of buffer to string of hex values (0-FF) separated by commas.
12778 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
12780 copy with no transform except NULL terminated. Any other implicit buffer-
12782 string conversion - byte-wise conversion of buffer to string of hex
12784 (0-FF) separated by spaces.
12786 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
12788 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
12790 one byte too short in the case of a node in the root scope. This could
12791 cause a fault during debug output.
12793 - Code and Data Size: Current and previous core subsystem library sizes
12795 shown below. These are the code and data sizes for the acpica.lib
12797 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12798 any ACPI driver or OSPM code. The debug version of the code includes the
12799 debug output trace mechanism and has a much larger code and data size.
12801 that these values will vary depending on the efficiency of the compiler
12803 the compiler options used during generation.
12806 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12807 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12809 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
12810 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
12813 2) iASL Compiler/Disassembler:
12815 - Fixed a Linux generation error.
12818 ----------------------------------------
12819 16 August 2004. Summary of changes for version 20040816:
12821 1) ACPI CA Core Subsystem:
12823 Designed and implemented support within the AML interpreter for the so-
12824 called "implicit return". This support returns the result of the last
12826 operation within a control method, in the absence of an explicit Return()
12827 operator. A few machines depend on this behavior, even though it is not
12828 explicitly supported by the ASL language. It is optional support that
12830 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
12832 Removed support for the PCI_Config address space from the internal low
12834 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
12835 support was not used internally, and would not work correctly anyway
12837 the PCI bus number and segment number were not supported. There are
12838 separate interfaces for PCI configuration space access because of the
12842 Code and Data Size: Current and previous core subsystem library sizes are
12843 shown below. These are the code and data sizes for the acpica.lib
12845 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12846 any ACPI driver or OSPM code. The debug version of the code includes the
12847 debug output trace mechanism and has a much larger code and data size.
12849 that these values will vary depending on the efficiency of the compiler
12851 the compiler options used during generation.
12854 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12855 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12857 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
12858 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
12861 2) iASL Compiler/Disassembler:
12863 Fixed a problem where constants in ASL expressions at the root level (not
12864 within a control method) could be inadvertently truncated during code
12865 generation. This problem was introduced in the 20040715 release.
12868 ----------------------------------------
12869 15 July 2004. Summary of changes for version 20040715:
12871 1) ACPI CA Core Subsystem:
12873 Restructured the internal HW GPE interfaces to pass/track the current
12875 of interrupts (enabled/disabled) in order to avoid possible deadlock and
12876 increase flexibility of the interfaces.
12878 Implemented a "lexicographical compare" for String and Buffer objects
12880 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
12882 as per further clarification to the ACPI specification. Behavior is
12884 to C library "strcmp".
12886 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
12887 external function. In the 32-bit non-debug case, the stack use has been
12888 reduced from 168 bytes to 32 bytes.
12890 Deployed a new run-time configuration flag,
12891 AcpiGbl_EnableInterpreterSlack,
12892 whose purpose is to allow the AML interpreter to forgive certain bad AML
12893 constructs. Default setting is FALSE.
12895 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
12897 support code. If enabled, it allows field access to go beyond the end of
12899 region definition if the field is within the region length rounded up to
12901 next access width boundary (a common coding error.)
12903 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
12904 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
12906 symbols are lowercased by the latest version of the AcpiSrc tool.
12908 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
12909 rename "Register" to simply "Reg" to prevent certain compilers from
12912 Code and Data Size: Current and previous core subsystem library sizes are
12913 shown below. These are the code and data sizes for the acpica.lib
12915 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12916 any ACPI driver or OSPM code. The debug version of the code includes the
12917 debug output trace mechanism and has a much larger code and data size.
12919 that these values will vary depending on the efficiency of the compiler
12921 the compiler options used during generation.
12924 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12925 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12927 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
12928 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
12931 2) iASL Compiler/Disassembler:
12933 Implemented full support for Package objects within the Case() operator.
12934 Note: The Break() operator is currently not supported within Case blocks
12935 (TermLists) as there is some question about backward compatibility with
12940 Fixed a problem where complex terms were not supported properly within
12944 Eliminated extraneous warning for compiler-emitted reserved names of the
12945 form "_T_x". (Used in Switch/Case operators.)
12947 Eliminated optimization messages for "_T_x" objects and small constants
12948 within the DefinitionBlock operator.
12951 ----------------------------------------
12952 15 June 2004. Summary of changes for version 20040615:
12954 1) ACPI CA Core Subsystem:
12956 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12958 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12961 All directory names in the entire source package are lower case, as they
12962 were in earlier releases.
12964 Implemented "Disassemble" command in the AML debugger that will
12966 a single control method.
12968 Code and Data Size: Current and previous core subsystem library sizes are
12969 shown below. These are the code and data sizes for the acpica.lib
12971 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
12972 any ACPI driver or OSPM code. The debug version of the code includes the
12973 debug output trace mechanism and has a much larger code and data size.
12975 that these values will vary depending on the efficiency of the compiler
12977 the compiler options used during generation.
12980 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
12981 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
12984 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
12985 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
12988 2) iASL Compiler/Disassembler:
12990 Implemented support for Buffer and String objects (as per ACPI 2.0) for
12992 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
12995 All directory names in the entire source package are lower case, as they
12996 were in earlier releases.
12998 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
13001 Fixed an issue with the Windows version of the compiler where later
13003 of Windows place the FADT in the registry under the name "FADT" and not
13004 "FACP" as earlier versions did. This applies when using the -g or -
13005 d<nofilename> options. The compiler now looks for both strings as
13008 Fixed a problem with compiler namepath optimization where a namepath
13010 the Scope() operator could not be optimized if the namepath was a subpath
13012 the current scope path.
13014 ----------------------------------------
13015 27 May 2004. Summary of changes for version 20040527:
13017 1) ACPI CA Core Subsystem:
13019 Completed a new design and implementation for EBDA (Extended BIOS Data
13021 support in the RSDP scan code. The original code improperly scanned for
13023 EBDA by simply scanning from memory location 0 to 0x400. The correct
13025 is to first obtain the EBDA pointer from within the BIOS data area, then
13026 scan 1K of memory starting at the EBDA pointer. There appear to be few
13028 any machines that place the RSDP in the EBDA, however.
13030 Integrated a fix for a possible fault during evaluation of BufferField
13031 arguments. Obsolete code that was causing the problem was removed.
13033 Found and fixed a problem in the Field Support Code where data could be
13034 corrupted on a bit field read that starts on an aligned boundary but does
13035 not end on an aligned boundary. Merged the read/write "datum length"
13036 calculation code into a common procedure.
13038 Rolled in a couple of changes to the FreeBSD-specific header.
13041 Code and Data Size: Current and previous core subsystem library sizes are
13042 shown below. These are the code and data sizes for the acpica.lib
13044 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13045 any ACPI driver or OSPM code. The debug version of the code includes the
13046 debug output trace mechanism and has a much larger code and data size.
13048 that these values will vary depending on the efficiency of the compiler
13050 the compiler options used during generation.
13053 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13054 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13056 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
13057 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
13060 2) iASL Compiler/Disassembler:
13062 Fixed a generation warning produced by some overly-verbose compilers for
13066 ----------------------------------------
13067 14 May 2004. Summary of changes for version 20040514:
13069 1) ACPI CA Core Subsystem:
13071 Fixed a problem where hardware GPE enable bits sometimes not set properly
13072 during and after GPE method execution. Result of 04/27 changes.
13074 Removed extra "clear all GPEs" when sleeping/waking.
13076 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
13077 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
13079 the new AcpiEv* calls as appropriate.
13081 ACPI_OS_NAME was removed from the OS-specific headers. The default name
13083 now "Microsoft Windows NT" for maximum compatibility. However this can
13085 changed by modifying the acconfig.h file.
13087 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
13088 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
13090 Run _INI methods on ThermalZone objects. This is against the ACPI
13091 specification, but there is apparently ASL code in the field that has
13093 _INI methods, and apparently "other" AML interpreters execute them.
13095 Performed a full 16/32/64 bit lint that resulted in some small changes.
13097 Added a sleep simulation command to the AML debugger to test sleep code.
13099 Code and Data Size: Current and previous core subsystem library sizes are
13100 shown below. These are the code and data sizes for the acpica.lib
13102 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13103 any ACPI driver or OSPM code. The debug version of the code includes the
13104 debug output trace mechanism and has a much larger code and data size.
13106 that these values will vary depending on the efficiency of the compiler
13108 the compiler options used during generation.
13111 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13112 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13114 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13115 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
13117 ----------------------------------------
13118 27 April 2004. Summary of changes for version 20040427:
13120 1) ACPI CA Core Subsystem:
13122 Completed a major overhaul of the GPE handling within ACPI CA. There are
13123 now three types of GPEs: wake-only, runtime-only, and combination
13125 The only GPEs allowed to be combination wake/run are for button-style
13126 devices such as a control-method power button, control-method sleep
13128 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
13130 referenced by any _PRW methods are marked for "runtime" and hardware
13131 enabled. Any GPE that is referenced by a _PRW method is marked for
13133 (and disabled at runtime). However, at sleep time, only those GPEs that
13134 have been specifically enabled for wake via the AcpiEnableGpe interface
13136 actually be hardware enabled.
13138 A new external interface has been added, AcpiSetGpeType(), that is meant
13140 be used by device drivers to force a GPE to a particular type. It will
13142 especially useful for the drivers for the button devices mentioned above.
13144 Completed restructuring of the ACPI CA initialization sequence so that
13145 default operation region handlers are installed before GPEs are
13147 and the _PRW methods are executed. This will prevent errors when the
13149 methods attempt to access system memory or I/O space.
13151 GPE enable/disable no longer reads the GPE enable register. We now keep
13153 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
13154 thus no longer depend on the hardware to maintain these bits.
13156 Always clear the wake status and fixed/GPE status bits before sleep, even
13159 Improved the AML debugger output for displaying the GPE blocks and their
13162 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
13166 Fixed a problem where the physical address was incorrectly calculated
13168 the Load() operator was used to directly load from an Operation Region
13170 loading from a Field object.) Also added check for minimum table length
13174 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
13177 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
13178 consistency with the other fields returned.
13180 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
13181 structure for each GPE in the system, so the size of this structure is
13184 CPU stack requirement reduction: Cleaned up the method execution and
13186 evaluation paths so that now a parameter structure is passed, instead of
13187 copying the various method parameters over and over again.
13189 In evregion.c: Correctly exit and reenter the interpreter region if and
13190 only if dispatching an operation region request to a user-installed
13192 Do not exit/reenter when dispatching to a default handler (e.g., default
13193 system memory or I/O handlers)
13196 Notes for updating drivers for the new GPE support. The following
13198 must be made to ACPI-related device drivers that are attached to one or
13200 GPEs: (This information will be added to the ACPI CA Programmer
13203 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
13205 explicitly call AcpiEnableGpe.
13206 2) There is a new interface called AcpiSetGpeType. This should be called
13207 before enabling the GPE. Also, this interface will automatically disable
13208 the GPE if it is currently enabled.
13209 3) AcpiEnableGpe no longer supports a GPE type flag.
13211 Specific drivers that must be changed:
13213 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
13214 AeGpeHandler, NULL);
13215 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
13216 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
13218 2) Button Drivers (Power, Lid, Sleep):
13219 Run _PRW method under parent device
13220 If _PRW exists: /* This is a control-method button */
13221 Extract GPE number and possibly GpeDevice
13222 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
13223 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
13225 For all other devices that have _PRWs, we automatically set the GPE type
13227 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
13229 must be done on a selective basis, usually requiring some kind of user
13231 to allow the user to pick the wake devices.
13234 Code and Data Size: Current and previous core subsystem library sizes are
13235 shown below. These are the code and data sizes for the acpica.lib
13237 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13238 any ACPI driver or OSPM code. The debug version of the code includes the
13239 debug output trace mechanism and has a much larger code and data size.
13241 that these values will vary depending on the efficiency of the compiler
13243 the compiler options used during generation.
13246 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13247 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13250 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
13251 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
13255 ----------------------------------------
13256 02 April 2004. Summary of changes for version 20040402:
13258 1) ACPI CA Core Subsystem:
13260 Fixed an interpreter problem where an indirect store through an ArgX
13261 parameter was incorrectly applying the "implicit conversion rules" during
13262 the store. From the ACPI specification: "If the target is a method local
13264 argument (LocalX or ArgX), no conversion is performed and the result is
13265 stored directly to the target". The new behavior is to disable implicit
13266 conversion during ALL stores to an ArgX.
13268 Changed the behavior of the _PRW method scan to ignore any and all errors
13269 returned by a given _PRW. This prevents the scan from aborting from the
13270 failure of any single _PRW.
13272 Moved the runtime configuration parameters from the global init procedure
13274 static variables in acglobal.h. This will allow the host to override the
13275 default values easily.
13277 Code and Data Size: Current and previous core subsystem library sizes are
13278 shown below. These are the code and data sizes for the acpica.lib
13280 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13281 any ACPI driver or OSPM code. The debug version of the code includes the
13282 debug output trace mechanism and has a much larger code and data size.
13284 that these values will vary depending on the efficiency of the compiler
13286 the compiler options used during generation.
13289 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13290 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13292 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
13293 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
13296 2) iASL Compiler/Disassembler:
13298 iASL now fully disassembles SSDTs. However, External() statements are
13300 generated automatically for unresolved symbols at this time. This is a
13301 planned feature for future implementation.
13303 Fixed a scoping problem in the disassembler that occurs when the type of
13305 target of a Scope() operator is overridden. This problem caused an
13306 incorrectly nested internal namespace to be constructed.
13308 Any warnings or errors that are emitted during disassembly are now
13310 out automatically so that the resulting file can be recompiled without
13314 ----------------------------------------
13315 26 March 2004. Summary of changes for version 20040326:
13317 1) ACPI CA Core Subsystem:
13319 Implemented support for "wake" GPEs via interaction between GPEs and the
13320 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
13321 identified as a WAKE GPE and by default will no longer be enabled at
13322 runtime. Previously, we were blindly enabling all GPEs with a
13324 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
13326 believe this has been the cause of thousands of "spurious" GPEs on some
13329 This new GPE behavior is can be reverted to the original behavior (enable
13330 ALL GPEs at runtime) via a runtime flag.
13332 Fixed a problem where aliased control methods could not access objects
13333 properly. The proper scope within the namespace was not initialized
13334 (transferred to the target of the aliased method) before executing the
13337 Fixed a potential race condition on internal object deletion on the
13339 object in AcpiEvaluateObject.
13341 Integrated a fix for resource descriptors where both _MEM and _MTP were
13342 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
13343 wide, 0x0F instead of 0x03.)
13345 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
13348 fault in some cases.
13350 Updated Notify() values for debug statements in evmisc.c
13352 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
13354 Code and Data Size: Current and previous core subsystem library sizes are
13355 shown below. These are the code and data sizes for the acpica.lib
13357 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13358 any ACPI driver or OSPM code. The debug version of the code includes the
13359 debug output trace mechanism and has a much larger code and data size.
13361 that these values will vary depending on the efficiency of the compiler
13363 the compiler options used during generation.
13367 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13368 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13370 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
13371 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
13373 ----------------------------------------
13374 11 March 2004. Summary of changes for version 20040311:
13376 1) ACPI CA Core Subsystem:
13378 Fixed a problem where errors occurring during the parse phase of control
13379 method execution did not abort cleanly. For example, objects created and
13380 installed in the namespace were not deleted. This caused all subsequent
13381 invocations of the method to return the AE_ALREADY_EXISTS exception.
13383 Implemented a mechanism to force a control method to "Serialized"
13385 if the method attempts to create namespace objects. (The root of the
13386 AE_ALREADY_EXISTS problem.)
13388 Implemented support for the predefined _OSI "internal" control method.
13389 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
13391 "Windows 2001.1", and can be easily upgraded for new strings as
13393 This feature will allow "other" operating systems to execute the fully
13394 tested, "Windows" code path through the ASL code
13396 Global Lock Support: Now allows multiple acquires and releases with any
13397 internal thread. Removed concept of "owning thread" for this special
13400 Fixed two functions that were inappropriately declaring large objects on
13402 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
13404 method execution considerably.
13406 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
13407 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
13409 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
13410 defined on the machine.
13412 Implemented two runtime options: One to force all control method
13414 to "Serialized" to mimic Windows behavior, another to disable _OSI
13416 if it causes problems on a given machine.
13418 Code and Data Size: Current and previous core subsystem library sizes are
13419 shown below. These are the code and data sizes for the acpica.lib
13421 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
13422 any ACPI driver or OSPM code. The debug version of the code includes the
13423 debug output trace mechanism and has a much larger code and data size.
13425 that these values will vary depending on the efficiency of the compiler
13427 the compiler options used during generation.
13430 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13431 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13433 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
13434 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
13436 2) iASL Compiler/Disassembler:
13438 Fixed an array size problem for FreeBSD that would cause the compiler to
13441 ----------------------------------------
13442 20 February 2004. Summary of changes for version 20040220:
13445 1) ACPI CA Core Subsystem:
13447 Implemented execution of _SxD methods for Device objects in the
13448 GetObjectInfo interface.
13450 Fixed calls to _SST method to pass the correct arguments.
13452 Added a call to _SST on wake to restore to "working" state.
13454 Check for End-Of-Buffer failure case in the WalkResources interface.
13456 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
13457 structures to the beginning of the file.
13459 After wake, clear GPE status register(s) before enabling GPEs.
13461 After wake, clear/enable power button. (Perhaps we should clear/enable
13463 fixed events upon wake.)
13465 Fixed a couple of possible memory leaks in the Namespace manager.
13467 Integrated latest acnetbsd.h file.
13469 ----------------------------------------
13470 11 February 2004. Summary of changes for version 20040211:
13473 1) ACPI CA Core Subsystem:
13475 Completed investigation and implementation of the call-by-reference
13476 mechanism for control method arguments.
13478 Fixed a problem where a store of an object into an indexed package could
13479 fail if the store occurs within a different method than the method that
13480 created the package.
13482 Fixed a problem where the ToDecimal operator could return incorrect
13485 Fixed a problem where the CopyObject operator could fail on some of the
13487 obscure objects (e.g., Reference objects.)
13489 Improved the output of the Debug object to display buffer, package, and
13492 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
13494 the expected result.
13496 Added permanent ACPI_REPORT_ERROR macros for all instances of the
13497 ACPI_AML_INTERNAL exception.
13499 Integrated latest version of acfreebsd.h
13501 ----------------------------------------
13502 16 January 2004. Summary of changes for version 20040116:
13504 The purpose of this release is primarily to update the copyright years in
13505 each module, thus causing a huge number of diffs. There are a few small
13506 functional changes, however.
13508 1) ACPI CA Core Subsystem:
13510 Improved error messages when there is a problem finding one or more of
13512 required base ACPI tables
13514 Reintroduced the definition of APIC_HEADER in actbl.h
13516 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
13518 Removed extraneous reference to NewObj in dsmthdat.c
13522 Fixed a problem introduced in December that disabled the correct
13524 of Resource Templates
13527 ----------------------------------------
13528 03 December 2003. Summary of changes for version 20031203:
13530 1) ACPI CA Core Subsystem:
13532 Changed the initialization of Operation Regions during subsystem
13533 init to perform two entire walks of the ACPI namespace; The first
13534 to initialize the regions themselves, the second to execute the
13535 _REG methods. This fixed some interdependencies across _REG
13536 methods found on some machines.
13538 Fixed a problem where a Store(Local0, Local1) could simply update
13539 the object reference count, and not create a new copy of the
13540 object if the Local1 is uninitialized.
13542 Implemented support for the _SST reserved method during sleep
13545 Implemented support to clear the SLP_TYP and SLP_EN bits when
13546 waking up, this is apparently required by some machines.
13548 When sleeping, clear the wake status only if SleepState is not S5.
13550 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
13551 pointer arithmetic advanced a string pointer too far.
13553 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
13554 could be returned if the requested table has not been loaded.
13556 Within the support for IRQ resources, restructured the handling of
13557 the active and edge/level bits.
13559 Fixed a few problems in AcpiPsxExecute() where memory could be
13560 leaked under certain error conditions.
13562 Improved error messages for the cases where the ACPI mode could
13565 Code and Data Size: Current and previous core subsystem library
13566 sizes are shown below. These are the code and data sizes for the
13567 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13568 these values do not include any ACPI driver or OSPM code. The
13569 debug version of the code includes the debug output trace
13570 mechanism and has a much larger code and data size. Note that
13571 these values will vary depending on the efficiency of the compiler
13572 and the compiler options used during generation.
13574 Previous Release (20031029):
13575 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13576 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13578 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
13579 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
13581 2) iASL Compiler/Disassembler:
13583 Implemented a fix for the iASL disassembler where a bad index was
13584 generated. This was most noticeable on 64-bit platforms
13587 ----------------------------------------
13588 29 October 2003. Summary of changes for version 20031029:
13590 1) ACPI CA Core Subsystem:
13593 Fixed a problem where a level-triggered GPE with an associated
13594 _Lxx control method was incorrectly cleared twice.
13596 Fixed a problem with the Field support code where an access can
13597 occur beyond the end-of-region if the field is non-aligned but
13598 extends to the very end of the parent region (resulted in an
13599 AE_AML_REGION_LIMIT exception.)
13601 Fixed a problem with ACPI Fixed Events where an RT Clock handler
13602 would not get invoked on an RTC event. The RTC event bitmasks for
13603 the PM1 registers were not being initialized properly.
13605 Implemented support for executing _STA and _INI methods for
13606 Processor objects. Although this is currently not part of the
13607 ACPI specification, there is existing ASL code that depends on the
13608 init-time execution of these methods.
13610 Implemented and deployed a GetDescriptorName function to decode
13611 the various types of internal descriptors. Guards against null
13612 descriptors during debug output also.
13614 Implemented and deployed a GetNodeName function to extract the 4-
13615 character namespace node name. This function simplifies the debug
13616 and error output, as well as guarding against null pointers during
13619 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
13620 simplify the debug and error output of 64-bit integers. This
13621 macro replaces the HIDWORD and LODWORD macros for dumping these
13624 Updated the implementation of the Stall() operator to only call
13625 AcpiOsStall(), and also return an error if the operand is larger
13626 than 255. This preserves the required behavior of not
13627 relinquishing the processor, as would happen if AcpiOsSleep() was
13628 called for "long stalls".
13630 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
13631 initialized are now treated as NOOPs.
13633 Cleaned up a handful of warnings during 64-bit generation.
13635 Fixed a reported error where and incorrect GPE number was passed
13636 to the GPE dispatch handler. This value is only used for error
13637 output, however. Used this opportunity to clean up and streamline
13638 the GPE dispatch code.
13640 Code and Data Size: Current and previous core subsystem library
13641 sizes are shown below. These are the code and data sizes for the
13642 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13643 these values do not include any ACPI driver or OSPM code. The
13645 debug version of the code includes the debug output trace
13646 mechanism and has a much larger code and data size. Note that
13647 these values will vary depending on the efficiency of the compiler
13648 and the compiler options used during generation.
13650 Previous Release (20031002):
13651 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13652 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13654 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
13655 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
13658 2) iASL Compiler/Disassembler:
13660 Updated the iASL compiler to return an error if the operand to the
13661 Stall() operator is larger than 255.
13664 ----------------------------------------
13665 02 October 2003. Summary of changes for version 20031002:
13668 1) ACPI CA Core Subsystem:
13670 Fixed a problem with Index Fields where the index was not
13671 incremented for fields that require multiple writes to the
13672 index/data registers (Fields that are wider than the data
13675 Fixed a problem with all Field objects where a write could go
13676 beyond the end-of-field if the field was larger than the access
13677 granularity and therefore required multiple writes to complete the
13678 request. An extra write beyond the end of the field could happen
13681 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
13682 would incorrectly be returned if the width of the Data Register
13683 was larger than the specified field access width.
13685 Completed fixes for LoadTable() and Unload() and verified their
13686 operation. Implemented full support for the "DdbHandle" object
13687 throughout the ACPI CA subsystem.
13689 Implemented full support for the MADT and ECDT tables in the ACPI
13690 CA header files. Even though these tables are not directly
13691 consumed by ACPI CA, the header definitions are useful for ACPI
13694 Integrated resource descriptor fixes posted to the Linux ACPI
13695 list. This included checks for minimum descriptor length, and
13696 support for trailing NULL strings within descriptors that have
13697 optional string elements.
13699 Code and Data Size: Current and previous core subsystem library
13700 sizes are shown below. These are the code and data sizes for the
13701 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13702 these values do not include any ACPI driver or OSPM code. The
13703 debug version of the code includes the debug output trace
13704 mechanism and has a much larger code and data size. Note that
13705 these values will vary depending on the efficiency of the compiler
13706 and the compiler options used during generation.
13708 Previous Release (20030918):
13709 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13710 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13712 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
13713 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
13718 Implemented detection of non-ASCII characters within the input
13719 source ASL file. This catches attempts to compile binary (AML)
13720 files early in the compile, with an informative error message.
13722 Fixed a problem where the disassembler would fault if the output
13723 filename could not be generated or if the output file could not be
13726 ----------------------------------------
13727 18 September 2003. Summary of changes for version 20030918:
13730 1) ACPI CA Core Subsystem:
13732 Found and fixed a longstanding problem with the late execution of
13733 the various deferred AML opcodes (such as Operation Regions,
13734 Buffer Fields, Buffers, and Packages). If the name string
13735 specified for the name of the new object placed the object in a
13736 scope other than the current scope, the initialization/execution
13737 of the opcode failed. The solution to this problem was to
13738 implement a mechanism where the late execution of such opcodes
13739 does not attempt to lookup/create the name a second time in an
13740 incorrect scope. This fixes the "region size computed
13741 incorrectly" problem.
13743 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
13744 Global Lock AE_BAD_PARAMETER error.
13746 Fixed several 64-bit issues with prototypes, casting and data
13749 Removed duplicate prototype from acdisasm.h
13751 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
13753 Code and Data Size: Current and previous core subsystem library
13754 sizes are shown below. These are the code and data sizes for the
13755 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13756 these values do not include any ACPI driver or OSPM code. The
13757 debug version of the code includes the debug output trace
13758 mechanism and has a much larger code and data size. Note that
13759 these values will vary depending on the efficiency of the compiler
13760 and the compiler options used during generation.
13764 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13765 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13767 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
13768 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
13773 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
13774 correct sleep time in seconds.
13776 ----------------------------------------
13777 14 July 2003. Summary of changes for version 20030619:
13779 1) ACPI CA Core Subsystem:
13781 Parse SSDTs in order discovered, as opposed to reverse order
13784 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
13791 Dynamically allocate SDT list (suggested by Andi Kleen)
13793 proc function return value cleanups (Andi Kleen)
13795 Correctly handle NMI watchdog during long stalls (Andrew Morton)
13797 Make it so acpismp=force works (reported by Andrew Morton)
13800 ----------------------------------------
13801 19 June 2003. Summary of changes for version 20030619:
13803 1) ACPI CA Core Subsystem:
13805 Fix To/FromBCD, eliminating the need for an arch-specific #define.
13807 Do not acquire a semaphore in the S5 shutdown path.
13809 Fix ex_digits_needed for 0. (Takayoshi Kochi)
13811 Fix sleep/stall code reversal. (Andi Kleen)
13813 Revert a change having to do with control method calling
13818 acpiphp update (Takayoshi Kochi)
13820 Export acpi_disabled for sonypi (Stelian Pop)
13822 Mention acpismp=force in config help
13824 Re-add acpitable.c and acpismp=force. This improves backwards
13826 compatibility and also cleans up the code to a significant degree.
13828 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
13830 ----------------------------------------
13831 22 May 2003. Summary of changes for version 20030522:
13833 1) ACPI CA Core Subsystem:
13835 Found and fixed a reported problem where an AE_NOT_FOUND error
13836 occurred occasionally during _BST evaluation. This turned out to
13837 be an Owner ID allocation issue where a called method did not get
13838 a new ID assigned to it. Eventually, (after 64k calls), the Owner
13839 ID UINT16 would wraparound so that the ID would be the same as the
13840 caller's and the called method would delete the caller's
13843 Implemented extended error reporting for control methods that are
13844 aborted due to a run-time exception. Output includes the exact
13845 AML instruction that caused the method abort, a dump of the method
13846 locals and arguments at the time of the abort, and a trace of all
13847 nested control method calls.
13849 Modified the interpreter to allow the creation of buffers of zero
13850 length from the AML code. Implemented new code to ensure that no
13851 attempt is made to actually allocate a memory buffer (of length
13852 zero) - instead, a simple buffer object with a NULL buffer pointer
13853 and length zero is created. A warning is no longer issued when
13854 the AML attempts to create a zero-length buffer.
13856 Implemented a workaround for the "leading asterisk issue" in
13857 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
13858 asterisk is automatically removed if present in any HID, UID, or
13859 CID strings. The iASL compiler will still flag this asterisk as
13862 Implemented full support for _CID methods that return a package of
13863 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
13864 now additionally returns a device _CID list if present. This
13865 required a change to the external interface in order to pass an
13866 ACPI_BUFFER object as a parameter since the _CID list is of
13869 Fixed a problem with the new AE_SAME_HANDLER exception where
13870 handler initialization code did not know about this exception.
13872 Code and Data Size: Current and previous core subsystem library
13873 sizes are shown below. These are the code and data sizes for the
13874 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
13875 these values do not include any ACPI driver or OSPM code. The
13876 debug version of the code includes the debug output trace
13877 mechanism and has a much larger code and data size. Note that
13878 these values will vary depending on the efficiency of the compiler
13879 and the compiler options used during generation.
13881 Previous Release (20030509):
13882 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13883 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13885 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
13886 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
13891 Fixed a bug in which we would reinitialize the ACPI interrupt
13892 after it was already working, thus disabling all ACPI and the IRQs
13893 for any other device sharing the interrupt. (Thanks to Stian
13896 Toshiba driver update (John Belmonte)
13898 Return only 0 or 1 for our interrupt handler status (Andrew
13904 Fixed a reported problem where multiple (nested) ElseIf()
13905 statements were not handled correctly by the compiler, resulting
13906 in incorrect warnings and incorrect AML code. This was a problem
13907 in both the ASL parser and the code generator.
13912 Added changes to existing interfaces, new exception codes, and new
13913 text concerning reference count object management versus garbage
13916 ----------------------------------------
13917 09 May 2003. Summary of changes for version 20030509.
13920 1) ACPI CA Core Subsystem:
13922 Changed the subsystem initialization sequence to hold off
13923 installation of address space handlers until the hardware has been
13924 initialized and the system has entered ACPI mode. This is because
13925 the installation of space handlers can cause _REG methods to be
13926 run. Previously, the _REG methods could potentially be run before
13927 ACPI mode was enabled.
13929 Fixed some memory leak issues related to address space handler and
13930 notify handler installation. There were some problems with the
13931 reference count mechanism caused by the fact that the handler
13932 objects are shared across several namespace objects.
13934 Fixed a reported problem where reference counts within the
13935 namespace were not properly updated when named objects created by
13936 method execution were deleted.
13938 Fixed a reported problem where multiple SSDTs caused a deletion
13939 issue during subsystem termination. Restructured the table data
13940 structures to simplify the linked lists and the related code.
13942 Fixed a problem where the table ID associated with secondary
13943 tables (SSDTs) was not being propagated into the namespace objects
13944 created by those tables. This would only present a problem for
13945 tables that are unloaded at run-time, however.
13947 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
13948 type as the length parameter (instead of UINT32).
13950 Solved a long-standing problem where an ALREADY_EXISTS error
13951 appears on various systems. This problem could happen when there
13952 are multiple PCI_Config operation regions under a single PCI root
13953 bus. This doesn't happen very frequently, but there are some
13954 systems that do this in the ASL.
13956 Fixed a reported problem where the internal DeleteNode function
13957 was incorrectly handling the case where a namespace node was the
13958 first in the parent's child list, and had additional peers (not
13959 the only child, but first in the list of children.)
13961 Code and Data Size: Current core subsystem library sizes are shown
13962 below. These are the code and data sizes for the acpica.lib
13963 produced by the Microsoft Visual C++ 6.0 compiler, and these
13964 values do not include any ACPI driver or OSPM code. The debug
13965 version of the code includes the debug output trace mechanism and
13966 has a much larger code and data size. Note that these values will
13967 vary depending on the efficiency of the compiler and the compiler
13968 options used during generation.
13971 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
13972 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
13974 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
13975 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
13980 Allow ":" in OS override string (Ducrot Bruno)
13982 Kobject fix (Greg KH)
13985 3 iASL Compiler/Disassembler:
13987 Fixed a problem in the generation of the C source code files (AML
13988 is emitted in C source statements for BIOS inclusion) where the
13989 Ascii dump that appears within a C comment at the end of each line
13990 could cause a compile time error if the AML sequence happens to
13991 have an open comment or close comment sequence embedded.
13994 ----------------------------------------
13995 24 April 2003. Summary of changes for version 20030424.
13998 1) ACPI CA Core Subsystem:
14000 Support for big-endian systems has been implemented. Most of the
14001 support has been invisibly added behind big-endian versions of the
14002 ACPI_MOVE_* macros.
14004 Fixed a problem in AcpiHwDisableGpeBlock() and
14005 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
14006 low level hardware write routine. The offset parameter was
14007 actually eliminated from the low level read/write routines because
14008 they had become obsolete.
14010 Fixed a problem where a handler object was deleted twice during
14011 the removal of a fixed event handler.
14016 A fix for SMP systems with link devices was contributed by
14020 (2.5) Return whether we handled the interrupt in our IRQ handler.
14021 (Linux ISRs no longer return void, so we can propagate the handler
14022 return value from the ACPI CA core back to the OS.)
14028 The ACPI CA Programmer Reference has been updated to reflect new
14029 interfaces and changes to existing interfaces.
14031 ----------------------------------------
14032 28 March 2003. Summary of changes for version 20030328.
14034 1) ACPI CA Core Subsystem:
14036 The GPE Block Device support has been completed. New interfaces
14037 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
14038 interfaces (enable, disable, clear, getstatus) have been split
14039 into separate interfaces for Fixed Events and General Purpose
14040 Events (GPEs) in order to support GPE Block Devices properly.
14042 Fixed a problem where the error message "Failed to acquire
14043 semaphore" would appear during operations on the embedded
14046 Code and Data Size: Current core subsystem library sizes are shown
14047 below. These are the code and data sizes for the acpica.lib
14048 produced by the Microsoft Visual C++ 6.0 compiler, and these
14049 values do not include any ACPI driver or OSPM code. The debug
14050 version of the code includes the debug output trace mechanism and
14051 has a much larger code and data size. Note that these values will
14052 vary depending on the efficiency of the compiler and the compiler
14053 options used during generation.
14056 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14057 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14059 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
14060 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
14063 ----------------------------------------
14064 28 February 2003. Summary of changes for version 20030228.
14067 1) ACPI CA Core Subsystem:
14069 The GPE handling and dispatch code has been completely overhauled
14070 in preparation for support of GPE Block Devices (ID ACPI0006).
14071 This affects internal data structures and code only; there should
14072 be no differences visible externally. One new file has been
14075 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
14076 fields that are used to determine the GPE block lengths. The
14077 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
14078 structures are ignored. This is per the ACPI specification but it
14079 isn't very clear. The full 256 Block 0/1 GPEs are now supported
14080 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
14082 In the SCI interrupt handler, removed the read of the PM1_CONTROL
14083 register to look at the SCI_EN bit. On some machines, this read
14084 causes an SMI event and greatly slows down SCI events. (This may
14085 in fact be the cause of slow battery status response on some
14088 Fixed a problem where a store of a NULL string to a package object
14089 could cause the premature deletion of the object. This was seen
14090 during execution of the battery _BIF method on some systems,
14091 resulting in no battery data being returned.
14093 Added AcpiWalkResources interface to simplify parsing of resource
14096 Code and Data Size: Current core subsystem library sizes are shown
14097 below. These are the code and data sizes for the acpica.lib
14098 produced by the Microsoft Visual C++ 6.0 compiler, and these
14099 values do not include any ACPI driver or OSPM code. The debug
14100 version of the code includes the debug output trace mechanism and
14101 has a much larger code and data size. Note that these values will
14102 vary depending on the efficiency of the compiler and the compiler
14103 options used during generation.
14106 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14107 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14109 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
14110 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
14115 S3 fixes (Ole Rohne)
14117 Update ACPI PHP driver with to use new acpi_walk_resource API
14120 Add S4BIOS support (Pavel Machek)
14122 Map in entire table before performing checksum (John Stultz)
14124 Expand the mem= cmdline to allow the specification of reserved and
14125 ACPI DATA blocks (Pavel Machek)
14127 Never use ACPI on VISWS
14129 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
14131 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
14132 causing us to think that some systems support C2 when they really
14135 Do not count processor objects for non-present CPUs (Thanks to
14141 Fixed a problem where ASL include files could not be found and
14144 Added support for the _PDC reserved name.
14147 ----------------------------------------
14148 22 January 2003. Summary of changes for version 20030122.
14151 1) ACPI CA Core Subsystem:
14153 Added a check for constructs of the form: Store (Local0, Local0)
14154 where Local0 is not initialized. Apparently, some BIOS
14155 programmers believe that this is a NOOP. Since this store doesn't
14156 do anything anyway, the new prototype behavior will ignore this
14157 error. This is a case where we can relax the strict checking in
14158 the interpreter in the name of compatibility.
14163 The AcpiSrc Source Conversion Utility has been released with the
14164 Linux package for the first time. This is the utility that is
14165 used to convert the ACPI CA base source code to the Linux version.
14167 (Both) Handle P_BLK lengths shorter than 6 more gracefully
14169 (Both) Move more headers to include/acpi, and delete an unused
14172 (Both) Move drivers/acpi/include directory to include/acpi
14174 (Both) Boot functions don't use cmdline, so don't pass it around
14176 (Both) Remove include of unused header (Adrian Bunk)
14178 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
14180 former now also includes the latter, acpiphp.h only needs the one,
14183 (2.5) Make it possible to select method of bios restoring after S3
14184 resume. [=> no more ugly ifdefs] (Pavel Machek)
14186 (2.5) Make proc write interfaces work (Pavel Machek)
14188 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
14190 (2.5) Break out ACPI Perf code into its own module, under cpufreq
14191 (Dominik Brodowski)
14193 (2.4) S4BIOS support (Ducrot Bruno)
14195 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
14201 Added support to disassemble SSDT and PSDTs.
14203 Implemented support to obtain SSDTs from the Windows registry if
14207 ----------------------------------------
14208 09 January 2003. Summary of changes for version 20030109.
14210 1) ACPI CA Core Subsystem:
14212 Changed the behavior of the internal Buffer-to-String conversion
14213 function. The current ACPI specification states that the contents
14214 of the buffer are "converted to a string of two-character
14215 hexadecimal numbers, each separated by a space". Unfortunately,
14216 this definition is not backwards compatible with existing ACPI 1.0
14217 implementations (although the behavior was not defined in the ACPI
14218 1.0 specification). The new behavior simply copies data from the
14219 buffer to the string until a null character is found or the end of
14220 the buffer is reached. The new String object is always null
14221 terminated. This problem was seen during the generation of _BIF
14222 battery data where incorrect strings were returned for battery
14223 type, etc. This will also require an errata to the ACPI
14226 Renamed all instances of NATIVE_UINT and NATIVE_INT to
14227 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
14229 Copyright in all module headers (both Linux and non-Linux) has be
14232 Code and Data Size: Current core subsystem library sizes are shown
14233 below. These are the code and data sizes for the acpica.lib
14234 produced by the Microsoft Visual C++ 6.0 compiler, and these
14235 values do not include any ACPI driver or OSPM code. The debug
14236 version of the code includes the debug output trace mechanism and
14237 has a much larger code and data size. Note that these values will
14238 vary depending on the efficiency of the compiler and the compiler
14239 options used during generation.
14242 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14243 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14245 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14246 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14251 Fixed an oops on module insertion/removal (Matthew Tippett)
14253 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
14255 (2.5) Replace pr_debug (Randy Dunlap)
14257 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
14259 (Both) Eliminate spawning of thread from timer callback, in favor
14262 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
14264 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
14266 (Both) Add missing statics to button.c (Pavel Machek)
14268 Several changes have been made to the source code translation
14269 utility that generates the Linux Code in order to make the code
14272 All typedefs on structs and unions have been removed in keeping
14273 with the Linux coding style.
14275 Removed the non-Linux SourceSafe module revision number from each
14278 Completed major overhaul of symbols to be lowercased for linux.
14279 Doubled the number of symbols that are lowercased.
14281 Fixed a problem where identifiers within procedure headers and
14282 within quotes were not fully lower cased (they were left with a
14285 Some C macros whose only purpose is to allow the generation of 16-
14286 bit code are now completely removed in the Linux code, increasing
14287 readability and maintainability.
14289 ----------------------------------------
14291 12 December 2002. Summary of changes for version 20021212.
14294 1) ACPI CA Core Subsystem:
14296 Fixed a problem where the creation of a zero-length AML Buffer
14297 would cause a fault.
14299 Fixed a problem where a Buffer object that pointed to a static AML
14300 buffer (in an ACPI table) could inadvertently be deleted, causing
14303 Fixed a problem where a user buffer (passed in to the external
14304 ACPI CA interfaces) could be overwritten if the buffer was too
14305 small to complete the operation, causing memory corruption.
14307 Fixed a problem in the Buffer-to-String conversion code where a
14308 string of length one was always returned, regardless of the size
14309 of the input Buffer object.
14311 Removed the NATIVE_CHAR data type across the entire source due to
14312 lack of need and lack of consistent use.
14314 Code and Data Size: Current core subsystem library sizes are shown
14315 below. These are the code and data sizes for the acpica.lib
14316 produced by the Microsoft Visual C++ 6.0 compiler, and these
14317 values do not include any ACPI driver or OSPM code. The debug
14318 version of the code includes the debug output trace mechanism and
14319 has a much larger code and data size. Note that these values will
14320 vary depending on the efficiency of the compiler and the compiler
14321 options used during generation.
14324 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14325 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14327 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
14328 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
14331 ----------------------------------------
14332 05 December 2002. Summary of changes for version 20021205.
14334 1) ACPI CA Core Subsystem:
14336 Fixed a problem where a store to a String or Buffer object could
14337 cause corruption of the DSDT if the object type being stored was
14338 the same as the target object type and the length of the object
14339 being stored was equal to or smaller than the original (existing)
14340 target object. This was seen to cause corruption of battery _BIF
14341 buffers if the _BIF method modified the buffer on the fly.
14343 Fixed a problem where an internal error was generated if a control
14344 method invocation was used in an OperationRegion, Buffer, or
14345 Package declaration. This was caused by the deferred parsing of
14346 the control method and thus the deferred creation of the internal
14347 method object. The solution to this problem was to create the
14348 internal method object at the moment the method is encountered in
14349 the first pass - so that subsequent references to the method will
14350 able to obtain the required parameter count and thus properly
14351 parse the method invocation. This problem presented itself as an
14352 AE_AML_INTERNAL during the pass 1 parse phase during table load.
14354 Fixed a problem where the internal String object copy routine did
14355 not always allocate sufficient memory for the target String object
14356 and caused memory corruption. This problem was seen to cause
14357 "Allocation already present in list!" errors as memory allocation
14360 Implemented a new function for the evaluation of namespace objects
14361 that allows the specification of the allowable return object
14362 types. This simplifies a lot of code that checks for a return
14363 object of one or more specific objects returned from the
14364 evaluation (such as _STA, etc.) This may become and external
14365 function if it would be useful to ACPI-related drivers.
14367 Completed another round of prefixing #defines with "ACPI_" for
14370 Completed additional code restructuring to allow more modular
14371 linking for iASL compiler and AcpiExec. Several files were split
14372 creating new files. New files: nsparse.c dsinit.c evgpe.c
14374 Implemented an abort mechanism to terminate an executing control
14375 method via the AML debugger. This feature is useful for debugging
14376 control methods that depend (wait) for specific hardware
14379 Code and Data Size: Current core subsystem library sizes are shown
14380 below. These are the code and data sizes for the acpica.lib
14381 produced by the Microsoft Visual C++ 6.0 compiler, and these
14382 values do not include any ACPI driver or OSPM code. The debug
14383 version of the code includes the debug output trace mechanism and
14384 has a much larger code and data size. Note that these values will
14385 vary depending on the efficiency of the compiler and the compiler
14386 options used during generation.
14389 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14390 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14392 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
14393 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
14396 2) iASL Compiler/Disassembler
14398 Fixed a compiler code generation problem for "Interrupt" Resource
14399 Descriptors. If specified in the ASL, the optional "Resource
14400 Source Index" and "Resource Source" fields were not inserted into
14401 the correct location within the AML resource descriptor, creating
14402 an invalid descriptor.
14404 Fixed a disassembler problem for "Interrupt" resource descriptors.
14405 The optional "Resource Source Index" and "Resource Source" fields
14409 ----------------------------------------
14410 22 November 2002. Summary of changes for version 20021122.
14413 1) ACPI CA Core Subsystem:
14415 Fixed a reported problem where an object stored to a Method Local
14416 or Arg was not copied to a new object during the store - the
14417 object pointer was simply copied to the Local/Arg. This caused
14418 all subsequent operations on the Local/Arg to also affect the
14419 original source of the store operation.
14421 Fixed a problem where a store operation to a Method Local or Arg
14422 was not completed properly if the Local/Arg contained a reference
14423 (from RefOf) to a named field. The general-purpose store-to-
14424 namespace-node code is now used so that this case is handled
14427 Fixed a problem where the internal object copy routine would cause
14428 a protection fault if the object being copied was a Package and
14429 contained either 1) a NULL package element or 2) a nested sub-
14432 Fixed a problem with the GPE initialization that resulted from an
14433 ambiguity in the ACPI specification. One section of the
14434 specification states that both the address and length of the GPE
14435 block must be zero if the block is not supported. Another section
14436 implies that only the address need be zero if the block is not
14437 supported. The code has been changed so that both the address and
14438 the length must be non-zero to indicate a valid GPE block (i.e.,
14439 if either the address or the length is zero, the GPE block is
14442 Code and Data Size: Current core subsystem library sizes are shown
14443 below. These are the code and data sizes for the acpica.lib
14444 produced by the Microsoft Visual C++ 6.0 compiler, and these
14445 values do not include any ACPI driver or OSPM code. The debug
14446 version of the code includes the debug output trace mechanism and
14447 has a much larger code and data size. Note that these values will
14448 vary depending on the efficiency of the compiler and the compiler
14449 options used during generation.
14452 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14453 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14455 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14456 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
14461 Cleaned up EC driver. Exported an external EC read/write
14462 interface. By going through this, other drivers (most notably
14463 sonypi) will be able to serialize access to the EC.
14466 3) iASL Compiler/Disassembler
14468 Implemented support to optionally generate include files for both
14469 ASM and C (the -i switch). This simplifies BIOS development by
14470 automatically creating include files that contain external
14471 declarations for the symbols that are created within the
14473 (optionally generated) ASM and C AML source files.
14476 ----------------------------------------
14477 15 November 2002. Summary of changes for version 20021115.
14479 1) ACPI CA Core Subsystem:
14481 Fixed a memory leak problem where an error during resolution of
14483 method arguments during a method invocation from another method
14484 failed to cleanup properly by deleting all successfully resolved
14487 Fixed a problem where the target of the Index() operator was not
14488 correctly constructed if the source object was a package. This
14489 problem has not been detected because the use of a target operand
14490 with Index() is very rare.
14492 Fixed a problem with the Index() operator where an attempt was
14493 made to delete the operand objects twice.
14495 Fixed a problem where an attempt was made to delete an operand
14496 twice during execution of the CondRefOf() operator if the target
14499 Implemented the first of perhaps several internal create object
14500 functions that create and initialize a specific object type. This
14501 consolidates duplicated code wherever the object is created, thus
14502 shrinking the size of the subsystem.
14504 Implemented improved debug/error messages for errors that occur
14505 during nested method invocations. All executing method pathnames
14506 are displayed (with the error) as the call stack is unwound - thus
14509 Fixed a problem introduced in the 10/02 release that caused
14510 premature deletion of a buffer object if a buffer was used as an
14511 ASL operand where an integer operand is required (Thus causing an
14512 implicit object conversion from Buffer to Integer.) The change in
14513 the 10/02 release was attempting to fix a memory leak (albeit
14516 Code and Data Size: Current core subsystem library sizes are shown
14517 below. These are the code and data sizes for the acpica.lib
14518 produced by the Microsoft Visual C++ 6.0 compiler, and these
14519 values do not include any ACPI driver or OSPM code. The debug
14520 version of the code includes the debug output trace mechanism and
14521 has a much larger code and data size. Note that these values will
14522 vary depending on the efficiency of the compiler and the compiler
14523 options used during generation.
14526 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14527 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14529 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
14530 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
14535 Changed the implementation of the ACPI semaphores to use down()
14536 instead of down_interruptable(). It is important that the
14537 execution of ACPI control methods not be interrupted by signals.
14538 Methods must run to completion, or the system may be left in an
14539 unknown/unstable state.
14541 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
14545 3) iASL Compiler/Disassembler
14548 Changed the default location of output files. All output files
14549 are now placed in the current directory by default instead of in
14550 the directory of the source file. This change may affect some
14551 existing makefiles, but it brings the behavior of the compiler in
14552 line with other similar tools. The location of the output files
14553 can be overridden with the -p command line switch.
14556 ----------------------------------------
14557 11 November 2002. Summary of changes for version 20021111.
14560 0) ACPI Specification 2.0B is released and is now available at:
14561 http://www.acpi.info/index.html
14564 1) ACPI CA Core Subsystem:
14566 Implemented support for the ACPI 2.0 SMBus Operation Regions.
14567 This includes the early detection and handoff of the request to
14568 the SMBus region handler (avoiding all of the complex field
14569 support code), and support for the bidirectional return packet
14570 from an SMBus write operation. This paves the way for the
14571 development of SMBus drivers in each host operating system.
14573 Fixed a problem where the semaphore WAIT_FOREVER constant was
14574 defined as 32 bits, but must be 16 bits according to the ACPI
14575 specification. This had the side effect of causing ASL
14576 Mutex/Event timeouts even though the ASL code requested a wait
14577 forever. Changed all internal references to the ACPI timeout
14578 parameter to 16 bits to prevent future problems. Changed the name
14579 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
14581 Code and Data Size: Current core subsystem library sizes are shown
14582 below. These are the code and data sizes for the acpica.lib
14583 produced by the Microsoft Visual C++ 6.0 compiler, and these
14584 values do not include any ACPI driver or OSPM code. The debug
14585 version of the code includes the debug output trace mechanism and
14586 has a much larger code and data size. Note that these values will
14587 vary depending on the efficiency of the compiler and the compiler
14588 options used during generation.
14591 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14592 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14594 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
14595 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
14600 Module loading/unloading fixes (John Cagle)
14603 3) iASL Compiler/Disassembler
14605 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
14607 Implemented support for the disassembly of all SMBus protocol
14608 keywords (SMBQuick, SMBWord, etc.)
14610 ----------------------------------------
14611 01 November 2002. Summary of changes for version 20021101.
14614 1) ACPI CA Core Subsystem:
14616 Fixed a problem where platforms that have a GPE1 block but no GPE0
14617 block were not handled correctly. This resulted in a "GPE
14618 overlap" error message. GPE0 is no longer required.
14620 Removed code added in the previous release that inserted nodes
14621 into the namespace in alphabetical order. This caused some side-
14622 effects on various machines. The root cause of the problem is
14623 still under investigation since in theory, the internal ordering
14624 of the namespace nodes should not matter.
14627 Enhanced error reporting for the case where a named object is not
14628 found during control method execution. The full ACPI namepath
14629 (name reference) of the object that was not found is displayed in
14632 Note: as a result of the overhaul of the namespace object types in
14633 the previous release, the namespace nodes for the predefined
14634 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
14635 instead of ACPI_TYPE_ANY. This simplifies the namespace
14636 management code but may affect code that walks the namespace tree
14637 looking for specific object types.
14639 Code and Data Size: Current core subsystem library sizes are shown
14640 below. These are the code and data sizes for the acpica.lib
14641 produced by the Microsoft Visual C++ 6.0 compiler, and these
14642 values do not include any ACPI driver or OSPM code. The debug
14643 version of the code includes the debug output trace mechanism and
14644 has a much larger code and data size. Note that these values will
14645 vary depending on the efficiency of the compiler and the compiler
14646 options used during generation.
14649 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14650 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14652 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
14653 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
14658 Fixed a problem introduced in the previous release where the
14659 Processor and Thermal objects were not recognized and installed in
14660 /proc. This was related to the scope type change described above.
14663 3) iASL Compiler/Disassembler
14665 Implemented the -g option to get all of the required ACPI tables
14666 from the registry and save them to files (Windows version of the
14667 compiler only.) The required tables are the FADT, FACS, and DSDT.
14669 Added ACPI table checksum validation during table disassembly in
14670 order to catch corrupted tables.
14673 ----------------------------------------
14674 22 October 2002. Summary of changes for version 20021022.
14676 1) ACPI CA Core Subsystem:
14678 Implemented a restriction on the Scope operator that the target
14679 must already exist in the namespace at the time the operator is
14680 encountered (during table load or method execution). In other
14681 words, forward references are not allowed and Scope() cannot
14682 create a new object. This changes the previous behavior where the
14683 interpreter would create the name if not found. This new behavior
14684 correctly enables the search-to-root algorithm during namespace
14685 lookup of the target name. Because of this upsearch, this fixes
14686 the known Compaq _SB_.OKEC problem and makes both the AML
14687 interpreter and iASL compiler compatible with other ACPI
14690 Completed a major overhaul of the internal ACPI object types for
14691 the ACPI Namespace and the associated operand objects. Many of
14692 these types had become obsolete with the introduction of the two-
14693 pass namespace load. This cleanup simplifies the code and makes
14694 the entire namespace load mechanism much clearer and easier to
14697 Improved debug output for tracking scope opening/closing to help
14698 diagnose scoping issues. The old scope name as well as the new
14699 scope name are displayed. Also improved error messages for
14700 problems with ASL Mutex objects and error messages for GPE
14703 Cleaned up the namespace dump code, removed obsolete code.
14705 All string output (for all namespace/object dumps) now uses the
14706 common ACPI string output procedure which handles escapes properly
14707 and does not emit non-printable characters.
14709 Fixed some issues with constants in the 64-bit version of the
14710 local C library (utclib.c)
14715 EC Driver: No longer attempts to acquire the Global Lock at
14719 3) iASL Compiler/Disassembler
14721 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
14722 2 opcodes outside of a control method. This means that the
14723 "executable" operators (versus the "namespace" operators) cannot
14724 be used at the table level; they can only be used within a control
14727 Implemented the restriction on the Scope() operator where the
14728 target must already exist in the namespace at the time the
14729 operator is encountered (during ASL compilation). In other words,
14730 forward references are not allowed and Scope() cannot create a new
14731 object. This makes the iASL compiler compatible with other ACPI
14732 implementations and makes the Scope() implementation adhere to the
14733 ACPI specification.
14735 Fixed a problem where namepath optimization for the Alias operator
14736 was optimizing the wrong path (of the two namepaths.) This caused
14737 a "Missing alias link" error message.
14739 Fixed a problem where an "unknown reserved name" warning could be
14740 incorrectly generated for names like "_SB" when the trailing
14741 underscore is not used in the original ASL.
14743 Fixed a problem where the reserved name check did not handle
14744 NamePaths with multiple NameSegs correctly. The first nameseg of
14745 the NamePath was examined instead of the last NameSeg.
14748 ----------------------------------------
14750 02 October 2002. Summary of changes for this release.
14753 1) ACPI CA Core Subsystem version 20021002:
14755 Fixed a problem where a store/copy of a string to an existing
14756 string did not always set the string length properly in the String
14759 Fixed a reported problem with the ToString operator where the
14760 behavior was identical to the ToHexString operator instead of just
14761 simply converting a raw buffer to a string data type.
14763 Fixed a problem where CopyObject and the other "explicit"
14764 conversion operators were not updating the internal namespace node
14765 type as part of the store operation.
14767 Fixed a memory leak during implicit source operand conversion
14768 where the original object was not deleted if it was converted to a
14769 new object of a different type.
14771 Enhanced error messages for all problems associated with namespace
14772 lookups. Common procedure generates and prints the lookup name as
14773 well as the formatted status.
14775 Completed implementation of a new design for the Alias support
14776 within the namespace. The existing design did not handle the case
14777 where a new object was assigned to one of the two names due to the
14778 use of an explicit conversion operator, resulting in the two names
14779 pointing to two different objects. The new design simply points
14780 the Alias name to the original name node - not to the object.
14781 This results in a level of indirection that must be handled in the
14782 name resolution mechanism.
14784 Code and Data Size: Current core subsystem library sizes are shown
14785 below. These are the code and data sizes for the acpica.lib
14786 produced by the Microsoft Visual C++ 6.0 compiler, and these
14787 values do not include any ACPI driver or OSPM code. The debug
14788 version of the code includes the debug output trace mechanism and
14789 has a larger code and data size. Note that these values will vary
14790 depending on the efficiency of the compiler and the compiler
14791 options used during generation.
14794 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14795 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14797 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
14798 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
14803 Initialize thermal driver's timer before it is used. (Knut
14806 Allow handling negative celsius values. (Kochi Takayoshi)
14808 Fix thermal management and make trip points. R/W (Pavel Machek)
14810 Fix /proc/acpi/sleep. (P. Christeas)
14812 IA64 fixes. (David Mosberger)
14814 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
14816 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
14820 3) iASL Compiler/Disassembler
14822 Clarified some warning/error messages.
14825 ----------------------------------------
14826 18 September 2002. Summary of changes for this release.
14829 1) ACPI CA Core Subsystem version 20020918:
14831 Fixed a reported problem with reference chaining (via the Index()
14832 and RefOf() operators) in the ObjectType() and SizeOf() operators.
14833 The definition of these operators includes the dereferencing of
14834 all chained references to return information on the base object.
14836 Fixed a problem with stores to indexed package elements - the
14837 existing code would not complete the store if an "implicit
14838 conversion" was not performed. In other words, if the existing
14839 object (package element) was to be replaced completely, the code
14840 didn't handle this case.
14842 Relaxed typechecking on the ASL "Scope" operator to allow the
14843 target name to refer to an object of type Integer, String, or
14844 Buffer, in addition to the scoping object types (Device,
14845 predefined Scopes, Processor, PowerResource, and ThermalZone.)
14846 This allows existing AML code that has workarounds for a bug in
14847 Windows to function properly. A warning is issued, however. This
14848 affects both the AML interpreter and the iASL compiler. Below is
14849 an example of this type of ASL code:
14855 Fixed some reported problems with 64-bit integer support in the
14856 local implementation of C library functions (clib.c)
14861 Use ACPI fix map region instead of IOAPIC region, since it is
14862 undefined in non-SMP.
14864 Ensure that the SCI has the proper polarity and trigger, even on
14865 systems that do not have an interrupt override entry in the MADT.
14867 2.5 big driver reorganization (Pat Mochel)
14869 Use early table mapping code from acpitable.c (Andi Kleen)
14871 New blacklist entries (Andi Kleen)
14873 Blacklist improvements. Split blacklist code out into a separate
14874 file. Move checking the blacklist to very early. Previously, we
14875 would use ACPI tables, and then halfway through init, check the
14876 blacklist -- too late. Now, it's early enough to completely fall-
14880 3) iASL Compiler/Disassembler version 20020918:
14882 Fixed a problem where the typechecking code didn't know that an
14883 alias could point to a method. In other words, aliases were not
14884 being dereferenced during typechecking.
14887 ----------------------------------------
14888 29 August 2002. Summary of changes for this release.
14890 1) ACPI CA Core Subsystem Version 20020829:
14892 If the target of a Scope() operator already exists, it must be an
14893 object type that actually opens a scope -- such as a Device,
14894 Method, Scope, etc. This is a fatal runtime error. Similar error
14895 check has been added to the iASL compiler also.
14897 Tightened up the namespace load to disallow multiple names in the
14898 same scope. This previously was allowed if both objects were of
14899 the same type. (i.e., a lookup was the same as entering a new
14905 Ensure that the ACPI interrupt has the proper trigger and
14908 local_irq_disable is extraneous. (Matthew Wilcox)
14910 Make "acpi=off" actually do what it says, and not use the ACPI
14911 interpreter *or* the tables.
14913 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
14917 3) iASL Compiler/Disassembler Version 20020829:
14919 Implemented namepath optimization for name declarations. For
14920 example, a declaration like "Method (\_SB_.ABCD)" would get
14921 optimized to "Method (ABCD)" if the declaration is within the
14922 \_SB_ scope. This optimization is in addition to the named
14923 reference path optimization first released in the previous
14924 version. This would seem to complete all possible optimizations
14925 for namepaths within the ASL/AML.
14927 If the target of a Scope() operator already exists, it must be an
14928 object type that actually opens a scope -- such as a Device,
14929 Method, Scope, etc.
14931 Implemented a check and warning for unreachable code in the same
14932 block below a Return() statement.
14934 Fixed a problem where the listing file was not generated if the
14935 compiler aborted if the maximum error count was exceeded (200).
14937 Fixed a problem where the typechecking of method return values was
14938 broken. This includes the check for a return value when the
14939 method is invoked as a TermArg (a return value is expected.)
14941 Fixed a reported problem where EOF conditions during a quoted
14942 string or comment caused a fault.
14945 ----------------------------------------
14946 15 August 2002. Summary of changes for this release.
14948 1) ACPI CA Core Subsystem Version 20020815:
14950 Fixed a reported problem where a Store to a method argument that
14951 contains a reference did not perform the indirect store correctly.
14952 This problem was created during the conversion to the new
14953 reference object model - the indirect store to a method argument
14954 code was not updated to reflect the new model.
14956 Reworked the ACPI mode change code to better conform to ACPI 2.0,
14957 handle corner cases, and improve code legibility (Kochi Takayoshi)
14959 Fixed a problem with the pathname parsing for the carat (^)
14960 prefix. The heavy use of the carat operator by the new namepath
14961 optimization in the iASL compiler uncovered a problem with the AML
14962 interpreter handling of this prefix. In the case where one or
14963 more carats precede a single nameseg, the nameseg was treated as
14964 standalone and the search rule (to root) was inadvertently
14965 applied. This could cause both the iASL compiler and the
14966 interpreter to find the wrong object or to miss the error that
14967 should occur if the object does not exist at that exact pathname.
14969 Found and fixed the problem where the HP Pavilion DSDT would not
14970 load. This was a relatively minor tweak to the table loading code
14971 (a problem caused by the unexpected encounter with a method
14972 invocation not within a control method), but it does not solve the
14973 overall issue of the execution of AML code at the table level.
14974 This investigation is still ongoing.
14976 Code and Data Size: Current core subsystem library sizes are shown
14977 below. These are the code and data sizes for the acpica.lib
14978 produced by the Microsoft Visual C++ 6.0 compiler, and these
14979 values do not include any ACPI driver or OSPM code. The debug
14980 version of the code includes the debug output trace mechanism and
14981 has a larger code and data size. Note that these values will vary
14982 depending on the efficiency of the compiler and the compiler
14983 options used during generation.
14986 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
14987 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
14989 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
14990 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
14995 Remove redundant slab.h include (Brad Hards)
14997 Fix several bugs in thermal.c (Herbert Nachtnebel)
14999 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
15001 Change acpi_system_suspend to use updated irq functions (Pavel
15004 Export acpi_get_firmware_table (Matthew Wilcox)
15006 Use proper root proc entry for ACPI (Kochi Takayoshi)
15008 Fix early-boot table parsing (Bjorn Helgaas)
15011 3) iASL Compiler/Disassembler
15013 Reworked the compiler options to make them more consistent and to
15014 use two-letter options where appropriate. We were running out of
15015 sensible letters. This may break some makefiles, so check the
15016 current options list by invoking the compiler with no parameters.
15018 Completed the design and implementation of the ASL namepath
15019 optimization option for the compiler. This option optimizes all
15020 references to named objects to the shortest possible path. The
15021 first attempt tries to utilize a single nameseg (4 characters) and
15022 the "search-to-root" algorithm used by the interpreter. If that
15023 cannot be used (because either the name is not in the search path
15024 or there is a conflict with another object with the same name),
15025 the pathname is optimized using the carat prefix (usually a
15026 shorter string than specifying the entire path from the root.)
15028 Implemented support to obtain the DSDT from the Windows registry
15029 (when the disassembly option is specified with no input file).
15030 Added this code as the implementation for AcpiOsTableOverride in
15031 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
15032 utility) to scan memory for the DSDT to the AcpiOsTableOverride
15033 function in the DOS OSL to make the disassembler truly OS
15036 Implemented a new option to disassemble and compile in one step.
15037 When used without an input filename, this option will grab the
15038 DSDT from the local machine, disassemble it, and compile it in one
15041 Added a warning message for invalid escapes (a backslash followed
15042 by any character other than the allowable escapes). This catches
15043 the quoted string error "\_SB_" (which should be "\\_SB_" ).
15045 Also, there are numerous instances in the ACPI specification where
15048 Added a compiler option to disable all optimizations. This is
15049 basically the "compatibility mode" because by using this option,
15050 the AML code will come out exactly the same as other ASL
15053 Added error messages for incorrectly ordered dependent resource
15054 functions. This includes: missing EndDependentFn macro at end of
15055 dependent resource list, nested dependent function macros (both
15056 start and end), and missing StartDependentFn macro. These are
15057 common errors that should be caught at compile time.
15059 Implemented _OSI support for the disassembler and compiler. _OSI
15060 must be included in the namespace for proper disassembly (because
15061 the disassembler must know the number of arguments.)
15063 Added an "optimization" message type that is optional (off by
15064 default). This message is used for all optimizations - including
15065 constant folding, integer optimization, and namepath optimization.
15067 ----------------------------------------
15068 25 July 2002. Summary of changes for this release.
15071 1) ACPI CA Core Subsystem Version 20020725:
15073 The AML Disassembler has been enhanced to produce compilable ASL
15074 code and has been integrated into the iASL compiler (see below) as
15075 well as the single-step disassembly for the AML debugger and the
15076 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
15077 resource templates and macros are fully supported. The
15078 disassembler has been tested on over 30 different AML files,
15079 producing identical AML when the resulting disassembled ASL file
15080 is recompiled with the same ASL compiler.
15082 Modified the Resource Manager to allow zero interrupts and zero
15083 dma channels during the GetCurrentResources call. This was
15084 causing problems on some platforms.
15086 Added the AcpiOsRedirectOutput interface to the OSL to simplify
15087 output redirection for the AcpiOsPrintf and AcpiOsVprintf
15090 Code and Data Size: Current core subsystem library sizes are shown
15091 below. These are the code and data sizes for the acpica.lib
15092 produced by the Microsoft Visual C++ 6.0 compiler, and these
15093 values do not include any ACPI driver or OSPM code. The debug
15094 version of the code includes the debug output trace mechanism and
15095 has a larger code and data size. Note that these values will vary
15096 depending on the efficiency of the compiler and the compiler
15097 options used during generation.
15100 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15101 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15103 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
15104 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
15109 Fixed a panic in the EC driver (Dominik Brodowski)
15111 Implemented checksum of the R/XSDT itself during Linux table scan
15117 The AML disassembler is integrated into the compiler. The "-d"
15118 option invokes the disassembler to completely disassemble an
15119 input AML file, producing as output a text ASL file with the
15120 extension ".dsl" (to avoid name collisions with existing .asl
15121 source files.) A future enhancement will allow the disassembler
15122 to obtain the BIOS DSDT from the registry under Windows.
15124 Fixed a problem with the VendorShort and VendorLong resource
15125 descriptors where an invalid AML sequence was created.
15127 Implemented a fix for BufferData term in the ASL parser. It was
15128 inadvertently defined twice, allowing invalid syntax to pass and
15129 causing reduction conflicts.
15131 Fixed a problem where the Ones opcode could get converted to a
15132 value of zero if "Ones" was used where a byte, word or dword value
15133 was expected. The 64-bit value is now truncated to the correct
15134 size with the correct value.
15138 ----------------------------------------
15139 02 July 2002. Summary of changes for this release.
15142 1) ACPI CA Core Subsystem Version 20020702:
15144 The Table Manager code has been restructured to add several new
15145 features. Tables that are not required by the core subsystem
15146 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
15147 validated in any way and are returned from AcpiGetFirmwareTable if
15148 requested. The AcpiOsTableOverride interface is now called for
15149 each table that is loaded by the subsystem in order to allow the
15150 host to override any table it chooses. Previously, only the DSDT
15151 could be overridden. Added one new files, tbrsdt.c and
15154 Fixed a problem with the conversion of internal package objects to
15155 external objects (when a package is returned from a control
15156 method.) The return buffer length was set to zero instead of the
15157 proper length of the package object.
15159 Fixed a reported problem with the use of the RefOf and DeRefOf
15160 operators when passing reference arguments to control methods. A
15161 new type of Reference object is used internally for references
15162 produced by the RefOf operator.
15164 Added additional error messages in the Resource Manager to explain
15165 AE_BAD_DATA errors when they occur during resource parsing.
15167 Split the AcpiEnableSubsystem into two primitives to enable a
15168 finer granularity initialization sequence. These two calls should
15169 be called in this order: AcpiEnableSubsystem (flags),
15170 AcpiInitializeObjects (flags). The flags parameter remains the
15176 Updated the ACPI utilities module to understand the new style of
15177 fully resolved package objects that are now returned from the core
15178 subsystem. This eliminates errors of the form:
15180 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
15181 acpi_utils-0430 [145] acpi_evaluate_reference:
15182 Invalid element in package (not a device reference)
15184 The method evaluation utility uses the new buffer allocation
15185 scheme instead of calling AcpiEvaluate Object twice.
15187 Added support for ECDT. This allows the use of the Embedded
15189 Controller before the namespace has been fully initialized, which
15190 is necessary for ACPI 2.0 support, and for some laptops to
15191 initialize properly. (Laptops using ECDT are still rare, so only
15192 limited testing was performed of the added functionality.)
15194 Fixed memory leaks in the EC driver.
15196 Eliminated a brittle code structure in acpi_bus_init().
15198 Eliminated the acpi_evaluate() helper function in utils.c. It is
15199 no longer needed since acpi_evaluate_object can optionally
15200 allocate memory for the return object.
15202 Implemented fix for keyboard hang when getting battery readings on
15203 some systems (Stephen White)
15205 PCI IRQ routing update (Dominik Brodowski)
15207 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
15210 ----------------------------------------
15211 11 June 2002. Summary of changes for this release.
15214 1) ACPI CA Core Subsystem Version 20020611:
15216 Fixed a reported problem where constants such as Zero and One
15217 appearing within _PRT packages were not handled correctly within
15218 the resource manager code. Originally reported against the ASL
15219 compiler because the code generator now optimizes integers to
15220 their minimal AML representation (i.e. AML constants if possible.)
15221 The _PRT code now handles all AML constant opcodes correctly
15222 (Zero, One, Ones, Revision).
15224 Fixed a problem with the Concatenate operator in the AML
15225 interpreter where a buffer result object was incorrectly marked as
15226 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
15228 All package sub-objects are now fully resolved before they are
15229 returned from the external ACPI interfaces. This means that name
15230 strings are resolved to object handles, and constant operators
15231 (Zero, One, Ones, Revision) are resolved to Integers.
15233 Implemented immediate resolution of the AML Constant opcodes
15234 (Zero, One, Ones, Revision) to Integer objects upon detection
15235 within the AML stream. This has simplified and reduced the
15236 generated code size of the subsystem by eliminating about 10
15237 switch statements for these constants (which previously were
15238 contained in Reference objects.) The complicating issues are that
15239 the Zero opcode is used as a "placeholder" for unspecified
15240 optional target operands and stores to constants are defined to be
15243 Code and Data Size: Current core subsystem library sizes are shown
15244 below. These are the code and data sizes for the acpica.lib
15245 produced by the Microsoft Visual C++ 6.0 compiler, and these
15246 values do not include any ACPI driver or OSPM code. The debug
15247 version of the code includes the debug output trace mechanism and
15248 has a larger code and data size. Note that these values will vary
15249 depending on the efficiency of the compiler and the compiler
15250 options used during generation.
15253 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15254 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15256 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
15257 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
15263 Added preliminary support for obtaining _TRA data for PCI root
15264 bridges (Bjorn Helgaas).
15267 3) iASL Compiler Version X2046:
15269 Fixed a problem where the "_DDN" reserved name was defined to be a
15270 control method with one argument. There are no arguments, and
15271 _DDN does not have to be a control method.
15273 Fixed a problem with the Linux version of the compiler where the
15274 source lines printed with error messages were the wrong lines.
15275 This turned out to be the "LF versus CR/LF" difference between
15276 Windows and Unix. This appears to be the longstanding issue
15277 concerning listing output and error messages.
15279 Fixed a problem with the Linux version of compiler where opcode
15280 names within error messages were wrong. This was caused by a
15281 slight difference in the output of the Flex tool on Linux versus
15284 Fixed a problem with the Linux compiler where the hex output files
15285 contained some garbage data caused by an internal buffer overrun.
15288 ----------------------------------------
15289 17 May 2002. Summary of changes for this release.
15292 1) ACPI CA Core Subsystem Version 20020517:
15294 Implemented a workaround to an BIOS bug discovered on the HP
15295 OmniBook where the FADT revision number and the table size are
15296 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
15297 behavior is to fallback to using only the ACPI 1.0 fields of the
15298 FADT if the table is too small to be a ACPI 2.0 table as claimed
15299 by the revision number. Although this is a BIOS bug, this is a
15300 case where the workaround is simple enough and with no side
15301 effects, so it seemed prudent to add it. A warning message is
15304 Implemented minimum size checks for the fixed-length ACPI tables -
15305 - the FADT and FACS, as well as consistency checks between the
15306 revision number and the table size.
15308 Fixed a reported problem in the table override support where the
15309 new table pointer was incorrectly treated as a physical address
15310 instead of a logical address.
15312 Eliminated the use of the AE_AML_ERROR exception and replaced it
15313 with more descriptive codes.
15315 Fixed a problem where an exception would occur if an ASL Field was
15316 defined with no named Field Units underneath it (used by some
15319 Code and Data Size: Current core subsystem library sizes are shown
15320 below. These are the code and data sizes for the acpica.lib
15321 produced by the Microsoft Visual C++ 6.0 compiler, and these
15322 values do not include any ACPI driver or OSPM code. The debug
15323 version of the code includes the debug output trace mechanism and
15324 has a larger code and data size. Note that these values will vary
15325 depending on the efficiency of the compiler and the compiler
15326 options used during generation.
15329 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15330 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15332 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
15333 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
15339 Much work done on ACPI init (MADT and PCI IRQ routing support).
15340 (Paul D. and Dominik Brodowski)
15342 Fix PCI IRQ-related panic on boot (Sam Revitch)
15344 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
15346 Fix "MHz" typo (Dominik Brodowski)
15348 Fix RTC year 2000 issue (Dominik Brodowski)
15350 Preclude multiple button proc entries (Eric Brunet)
15352 Moved arch-specific code out of include/platform/aclinux.h
15354 3) iASL Compiler Version X2044:
15356 Implemented error checking for the string used in the EISAID macro
15357 (Usually used in the definition of the _HID object.) The code now
15358 strictly enforces the PnP format - exactly 7 characters, 3
15359 uppercase letters and 4 hex digits.
15361 If a raw string is used in the definition of the _HID object
15362 (instead of the EISAID macro), the string must contain all
15363 alphanumeric characters (e.g., "*PNP0011" is not allowed because
15366 Implemented checking for invalid use of ACPI reserved names for
15367 most of the name creation operators (Name, Device, Event, Mutex,
15368 OperationRegion, PowerResource, Processor, and ThermalZone.)
15369 Previously, this check was only performed for control methods.
15371 Implemented an additional check on the Name operator to emit an
15372 error if a reserved name that must be implemented in ASL as a
15373 control method is used. We know that a reserved name must be a
15374 method if it is defined with input arguments.
15376 The warning emitted when a namespace object reference is not found
15377 during the cross reference phase has been changed into an error.
15378 The "External" directive should be used for names defined in other
15382 4) Tools and Utilities
15384 The 16-bit tools (adump16 and aexec16) have been regenerated and
15387 Fixed a problem with the output of both acpidump and adump16 where
15388 the indentation of closing parentheses and brackets was not
15390 aligned properly with the parent block.
15393 ----------------------------------------
15394 03 May 2002. Summary of changes for this release.
15397 1) ACPI CA Core Subsystem Version 20020503:
15399 Added support a new OSL interface that allows the host operating
15401 system software to override the DSDT found in the firmware -
15402 AcpiOsTableOverride. With this interface, the OSL can examine the
15403 version of the firmware DSDT and replace it with a different one
15406 Added new external interfaces for accessing ACPI registers from
15407 device drivers and other system software - AcpiGetRegister and
15408 AcpiSetRegister. This was simply an externalization of the
15409 existing AcpiHwBitRegister interfaces.
15411 Fixed a regression introduced in the previous build where the
15412 ASL/AML CreateField operator always returned an error,
15413 "destination must be a NS Node".
15415 Extended the maximum time (before failure) to successfully enable
15416 ACPI mode to 3 seconds.
15418 Code and Data Size: Current core subsystem library sizes are shown
15419 below. These are the code and data sizes for the acpica.lib
15420 produced by the Microsoft Visual C++ 6.0 compiler, and these
15421 values do not include any ACPI driver or OSPM code. The debug
15422 version of the code includes the debug output trace mechanism and
15423 has a larger code and data size. Note that these values will vary
15424 depending on the efficiency of the compiler and the compiler
15425 options used during generation.
15428 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15429 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15431 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
15432 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
15437 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
15438 free. While 3 out of 4 of our in-house systems work fine, the last
15439 one still hangs when testing the LAPIC timer.
15441 Renamed many files in 2.5 kernel release to omit "acpi_" from the
15444 Added warning on boot for Presario 711FR.
15446 Sleep improvements (Pavel Machek)
15448 ACPI can now be built without CONFIG_PCI enabled.
15450 IA64: Fixed memory map functions (JI Lee)
15453 3) iASL Compiler Version X2043:
15455 Added support to allow the compiler to be integrated into the MS
15456 VC++ development environment for one-button compilation of single
15457 files or entire projects -- with error-to-source-line mapping.
15459 Implemented support for compile-time constant folding for the
15460 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
15461 specification. This allows the ASL writer to use expressions
15462 instead of Integer/Buffer/String constants in terms that must
15463 evaluate to constants at compile time and will also simplify the
15464 emitted AML in any such sub-expressions that can be folded
15465 (evaluated at compile-time.) This increases the size of the
15466 compiler significantly because a portion of the ACPI CA AML
15467 interpreter is included within the compiler in order to pre-
15468 evaluate constant expressions.
15471 Fixed a problem with the "Unicode" ASL macro that caused the
15472 compiler to fault. (This macro is used in conjunction with the
15473 _STR reserved name.)
15475 Implemented an AML opcode optimization to use the Zero, One, and
15476 Ones opcodes where possible to further reduce the size of integer
15477 constants and thus reduce the overall size of the generated AML
15480 Implemented error checking for new reserved terms for ACPI version
15483 Implemented the -qr option to display the current list of ACPI
15484 reserved names known to the compiler.
15486 Implemented the -qc option to display the current list of ASL
15487 operators that are allowed within constant expressions and can
15488 therefore be folded at compile time if the operands are constants.
15493 Updated the Programmer's Reference for new interfaces, data types,
15494 and memory allocation model options.
15496 Updated the iASL Compiler User Reference to apply new format and
15497 add information about new features and options.
15499 ----------------------------------------
15500 19 April 2002. Summary of changes for this release.
15502 1) ACPI CA Core Subsystem Version 20020419:
15504 The source code base for the Core Subsystem has been completely
15505 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
15506 versions. The Lint option files used are included in the
15507 /acpi/generate/lint directory.
15509 Implemented enhanced status/error checking across the entire
15510 Hardware manager subsystem. Any hardware errors (reported from
15511 the OSL) are now bubbled up and will abort a running control
15515 Fixed a problem where the per-ACPI-table integer width (32 or 64)
15516 was stored only with control method nodes, causing a fault when
15517 non-control method code was executed during table loading. The
15518 solution implemented uses a global variable to indicate table
15519 width across the entire ACPI subsystem. Therefore, ACPI CA does
15520 not support mixed integer widths across different ACPI tables
15523 Fixed a problem where NULL extended fields (X fields) in an ACPI
15524 2.0 ACPI FADT caused the table load to fail. Although the
15525 existing ACPI specification is a bit fuzzy on this topic, the new
15526 behavior is to fall back on a ACPI 1.0 field if the corresponding
15527 ACPI 2.0 X field is zero (even though the table revision indicates
15528 a full ACPI 2.0 table.) The ACPI specification will be updated to
15529 clarify this issue.
15531 Fixed a problem with the SystemMemory operation region handler
15532 where memory was always accessed byte-wise even if the AML-
15533 specified access width was larger than a byte. This caused
15534 problems on systems with memory-mapped I/O. Memory is now
15535 accessed with the width specified. On systems that do not support
15536 non-aligned transfers, a check is made to guarantee proper address
15537 alignment before proceeding in order to avoid an AML-caused
15538 alignment fault within the kernel.
15541 Fixed a problem with the ExtendedIrq resource where only one byte
15542 of the 4-byte Irq field was extracted.
15544 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
15545 function was out of date and required a rewrite.
15547 Code and Data Size: Current core subsystem library sizes are shown
15548 below. These are the code and data sizes for the acpica.lib
15549 produced by the Microsoft Visual C++ 6.0 compiler, and these
15550 values do not include any ACPI driver or OSPM code. The debug
15551 version of the code includes the debug output trace mechanism and
15552 has a larger code and data size. Note that these values will vary
15553 depending on the efficiency of the compiler and the compiler
15554 options used during generation.
15557 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15558 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15560 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
15561 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
15566 PCI IRQ routing fixes (Dominik Brodowski)
15569 3) iASL Compiler Version X2042:
15571 Implemented an additional compile-time error check for a field
15572 unit whose size + minimum access width would cause a run-time
15573 access beyond the end-of-region. Previously, only the field size
15574 itself was checked.
15576 The Core subsystem and iASL compiler now share a common parse
15577 object in preparation for compile-time evaluation of the type
15578 3/4/5 ASL operators.
15581 ----------------------------------------
15582 Summary of changes for this release: 03_29_02
15584 1) ACPI CA Core Subsystem Version 20020329:
15586 Implemented support for late evaluation of TermArg operands to
15587 Buffer and Package objects. This allows complex expressions to be
15588 used in the declarations of these object types.
15590 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
15591 1.0, if the field was larger than 32 bits, it was returned as a
15592 buffer - otherwise it was returned as an integer. In ACPI 2.0,
15593 the field is returned as a buffer only if the field is larger than
15594 64 bits. The TableRevision is now considered when making this
15595 conversion to avoid incompatibility with existing ASL code.
15597 Implemented logical addressing for AcpiOsGetRootPointer. This
15598 allows an RSDP with either a logical or physical address. With
15599 this support, the host OS can now override all ACPI tables with
15600 one logical RSDP. Includes implementation of "typed" pointer
15601 support to allow a common data type for both physical and logical
15602 pointers internally. This required a change to the
15603 AcpiOsGetRootPointer interface.
15605 Implemented the use of ACPI 2.0 Generic Address Structures for all
15606 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
15607 mapped I/O for these ACPI features.
15609 Initialization now ignores not only non-required tables (All
15610 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
15611 not validate the table headers of unrecognized tables.
15613 Fixed a problem where a notify handler could only be
15614 installed/removed on an object of type Device. All "notify"
15616 objects are now supported -- Devices, Processor, Power, and
15619 Removed most verbosity from the ACPI_DB_INFO debug level. Only
15620 critical information is returned when this debug level is enabled.
15622 Code and Data Size: Current core subsystem library sizes are shown
15623 below. These are the code and data sizes for the acpica.lib
15624 produced by the Microsoft Visual C++ 6.0 compiler, and these
15625 values do not include any ACPI driver or OSPM code. The debug
15626 version of the code includes the debug output trace mechanism and
15627 has a larger code and data size. Note that these values will vary
15628 depending on the efficiency of the compiler and the compiler
15629 options used during generation.
15632 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15633 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15635 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
15636 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
15641 The processor driver (acpi_processor.c) now fully supports ACPI
15642 2.0-based processor performance control (e.g. Intel(R)
15643 SpeedStep(TM) technology) Note that older laptops that only have
15644 the Intel "applet" interface are not supported through this. The
15645 'limit' and 'performance' interface (/proc) are fully functional.
15646 [Note that basic policy for controlling performance state
15647 transitions will be included in the next version of ospmd.] The
15648 idle handler was modified to more aggressively use C2, and PIIX4
15649 errata handling underwent a complete overhaul (big thanks to
15650 Dominik Brodowski).
15652 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
15653 based devices in the ACPI namespace are now dynamically bound
15654 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
15655 This allows, among other things, ACPI to resolve bus numbers for
15656 subordinate PCI bridges.
15658 Enhanced PCI IRQ routing to get the proper bus number for _PRT
15659 entries defined underneath PCI bridges.
15661 Added IBM 600E to bad bios list due to invalid _ADR value for
15662 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
15664 In the process of adding full MADT support (e.g. IOAPIC) for IA32
15665 (acpi.c, mpparse.c) -- stay tuned.
15667 Added back visual differentiation between fixed-feature and
15668 control-method buttons in dmesg. Buttons are also subtyped (e.g.
15669 button/power/PWRF) to simplify button identification.
15671 We no longer use -Wno-unused when compiling debug. Please ignore
15672 any "_THIS_MODULE defined but not used" messages.
15674 Can now shut down the system using "magic sysrq" key.
15677 3) iASL Compiler version 2041:
15679 Fixed a problem where conversion errors for hex/octal/decimal
15680 constants were not reported.
15682 Implemented a fix for the General Register template Address field.
15683 This field was 8 bits when it should be 64.
15685 Fixed a problem where errors/warnings were no longer being emitted
15686 within the listing output file.
15688 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
15689 exactly 4 characters, alphanumeric only.
15694 ----------------------------------------
15695 Summary of changes for this release: 03_08_02
15698 1) ACPI CA Core Subsystem Version 20020308:
15700 Fixed a problem with AML Fields where the use of the "AccessAny"
15701 keyword could cause an interpreter error due to attempting to read
15702 or write beyond the end of the parent Operation Region.
15704 Fixed a problem in the SystemMemory Operation Region handler where
15705 an attempt was made to map memory beyond the end of the region.
15706 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
15707 errors on some Linux systems.
15709 Fixed a problem where the interpreter/namespace "search to root"
15710 algorithm was not functioning for some object types. Relaxed the
15711 internal restriction on the search to allow upsearches for all
15712 external object types as well as most internal types.
15717 We now use safe_halt() macro versus individual calls to sti | hlt.
15719 Writing to the processor limit interface should now work. "echo 1"
15720 will increase the limit, 2 will decrease, and 0 will reset to the
15727 Fixed segfault on Linux version.
15730 ----------------------------------------
15731 Summary of changes for this release: 02_25_02
15733 1) ACPI CA Core Subsystem:
15736 Fixed a problem where the GPE bit masks were not initialized
15737 properly, causing erratic GPE behavior.
15739 Implemented limited support for multiple calling conventions. The
15740 code can be generated with either the VPL (variable parameter
15741 list, or "C") convention, or the FPL (fixed parameter list, or
15742 "Pascal") convention. The core subsystem is about 3.4% smaller
15743 when generated with FPL.
15748 Re-add some /proc/acpi/event functionality that was lost during
15751 Resolved issue with /proc events for fixed-feature buttons showing
15752 up as the system device.
15754 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
15756 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
15758 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
15760 Fixed limit interface & usage to fix bugs with passive cooling
15763 Restructured PRT support.
15766 ----------------------------------------
15767 Summary of changes for this label: 02_14_02
15770 1) ACPI CA Core Subsystem:
15772 Implemented support in AcpiLoadTable to allow loading of FACS and
15775 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
15776 been removed. All 64-bit platforms should be migrated to the ACPI
15777 2.0 tables. The actbl71.h header has been removed from the source
15780 All C macros defined within the subsystem have been prefixed with
15781 "ACPI_" to avoid collision with other system include files.
15783 Removed the return value for the two AcpiOsPrint interfaces, since
15784 it is never used and causes lint warnings for ignoring the return
15787 Added error checking to all internal mutex acquire and release
15788 calls. Although a failure from one of these interfaces is
15789 probably a fatal system error, these checks will cause the
15790 immediate abort of the currently executing method or interface.
15792 Fixed a problem where the AcpiSetCurrentResources interface could
15793 fault. This was a side effect of the deployment of the new memory
15796 Fixed a couple of problems with the Global Lock support introduced
15797 in the last major build. The "common" (1.0/2.0) internal FACS was
15798 being overwritten with the FACS signature and clobbering the
15799 Global Lock pointer. Also, the actual firmware FACS was being
15800 unmapped after construction of the "common" FACS, preventing
15801 access to the actual Global Lock field within it. The "common"
15802 internal FACS is no longer installed as an actual ACPI table; it
15803 is used simply as a global.
15805 Code and Data Size: Current core subsystem library sizes are shown
15806 below. These are the code and data sizes for the acpica.lib
15807 produced by the Microsoft Visual C++ 6.0 compiler, and these
15808 values do not include any ACPI driver or OSPM code. The debug
15809 version of the code includes the debug output trace mechanism and
15810 has a larger code and data size. Note that these values will vary
15811 depending on the efficiency of the compiler and the compiler
15812 options used during generation.
15814 Previous Release (02_07_01)
15815 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15816 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15818 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
15819 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
15824 Updated Linux-specific code for core macro and OSL interface
15825 changes described above.
15827 Improved /proc/acpi/event. It now can be opened only once and has
15828 proper poll functionality.
15830 Fixed and restructured power management (acpi_bus).
15832 Only create /proc "view by type" when devices of that class exist.
15834 Fixed "charging/discharging" bug (and others) in acpi_battery.
15836 Improved thermal zone code.
15839 3) ASL Compiler, version X2039:
15842 Implemented the new compiler restriction on ASL String hex/octal
15843 escapes to non-null, ASCII values. An error results if an invalid
15844 value is used. (This will require an ACPI 2.0 specification
15847 AML object labels that are output to the optional C and ASM source
15848 are now prefixed with both the ACPI table signature and table ID
15849 to help guarantee uniqueness within a large BIOS project.
15852 ----------------------------------------
15853 Summary of changes for this label: 02_01_02
15855 1) ACPI CA Core Subsystem:
15857 ACPI 2.0 support is complete in the entire Core Subsystem and the
15858 ASL compiler. All new ACPI 2.0 operators are implemented and all
15859 other changes for ACPI 2.0 support are complete. With
15860 simultaneous code and data optimizations throughout the subsystem,
15861 ACPI 2.0 support has been implemented with almost no additional
15862 cost in terms of code and data size.
15864 Implemented a new mechanism for allocation of return buffers. If
15865 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
15866 be allocated on behalf of the caller. Consolidated all return
15867 buffer validation and allocation to a common procedure. Return
15868 buffers will be allocated via the primary OSL allocation interface
15869 since it appears that a separate pool is not needed by most users.
15870 If a separate pool is required for these buffers, the caller can
15871 still use the original mechanism and pre-allocate the buffer(s).
15873 Implemented support for string operands within the DerefOf
15876 Restructured the Hardware and Event managers to be table driven,
15877 simplifying the source code and reducing the amount of generated
15880 Split the common read/write low-level ACPI register bitfield
15881 procedure into a separate read and write, simplifying the code
15884 Obsoleted the AcpiOsCallocate OSL interface. This interface was
15885 used only a handful of times and didn't have enough critical mass
15886 for a separate interface. Replaced with a common calloc procedure
15889 Fixed a reported problem with the GPE number mapping mechanism
15890 that allows GPE1 numbers to be non-contiguous with GPE0.
15891 Reorganized the GPE information and shrunk a large array that was
15892 originally large enough to hold info for all possible GPEs (256)
15893 to simply large enough to hold all GPEs up to the largest GPE
15894 number on the machine.
15896 Fixed a reported problem with resource structure alignment on 64-
15899 Changed the AcpiEnableEvent and AcpiDisableEvent external
15900 interfaces to not require any flags for the common case of
15901 enabling/disabling a GPE.
15903 Implemented support to allow a "Notify" on a Processor object.
15905 Most TBDs in comments within the source code have been resolved
15909 Fixed a problem in the interpreter where a standalone parent
15910 prefix (^) was not handled correctly in the interpreter and
15913 Removed obsolete and unnecessary GPE save/restore code.
15915 Implemented Field support in the ASL Load operator. This allows a
15916 table to be loaded from a named field, in addition to loading a
15917 table directly from an Operation Region.
15919 Implemented timeout and handle support in the external Global Lock
15922 Fixed a problem in the AcpiDump utility where pathnames were no
15923 longer being generated correctly during the dump of named objects.
15925 Modified the AML debugger to give a full display of if/while
15926 predicates instead of just one AML opcode at a time. (The
15927 predicate can have several nested ASL statements.) The old method
15928 was confusing during single stepping.
15930 Code and Data Size: Current core subsystem library sizes are shown
15931 below. These are the code and data sizes for the acpica.lib
15932 produced by the Microsoft Visual C++ 6.0 compiler, and these
15933 values do not include any ACPI driver or OSPM code. The debug
15934 version of the code includes the debug output trace mechanism and
15935 has a larger code and data size. Note that these values will vary
15936 depending on the efficiency of the compiler and the compiler
15937 options used during generation.
15939 Previous Release (12_18_01)
15940 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
15941 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
15943 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
15944 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
15948 Implemented fix for PIIX reverse throttling errata (Processor
15951 Added new Limit interface (Processor and Thermal drivers)
15953 New thermal policy (Thermal driver)
15955 Many updates to /proc
15957 Battery "low" event support (Battery driver)
15959 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
15961 IA32 - IA64 initialization unification, no longer experimental
15963 Menuconfig options redesigned
15965 3) ASL Compiler, version X2037:
15967 Implemented several new output features to simplify integration of
15968 AML code into firmware: 1) Output the AML in C source code with
15969 labels for each named ASL object. The original ASL source code
15970 is interleaved as C comments. 2) Output the AML in ASM source code
15971 with labels and interleaved ASL source. 3) Output the AML in
15972 raw hex table form, in either C or ASM.
15974 Implemented support for optional string parameters to the
15975 LoadTable operator.
15977 Completed support for embedded escape sequences within string
15978 literals. The compiler now supports all single character escapes
15979 as well as the Octal and Hex escapes. Note: the insertion of a
15980 null byte into a string literal (via the hex/octal escape) causes
15981 the string to be immediately terminated. A warning is issued.
15983 Fixed a problem where incorrect AML was generated for the case
15984 where an ASL namepath consists of a single parent prefix (
15986 ) with no trailing name segments.
15988 The compiler has been successfully generated with a 64-bit C
15994 ----------------------------------------
15995 Summary of changes for this label: 12_18_01
15999 Enhanced blacklist with reason and severity fields. Any table's
16000 signature may now be used to identify a blacklisted system.
16002 Call _PIC control method to inform the firmware which interrupt
16003 model the OS is using. Turn on any disabled link devices.
16005 Cleaned up busmgr /proc error handling (Andreas Dilger)
16007 2) ACPI CA Core Subsystem:
16009 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
16012 Completed implementation of the ACPI 2.0 "Continue",
16013 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
16014 operators. All new ACPI 2.0 operators are now implemented in both
16015 the ASL compiler and the AML interpreter. The only remaining ACPI
16016 2.0 task is support for the String data type in the DerefOf
16017 operator. Fixed a problem with AcquireMutex where the status code
16018 was lost if the caller had to actually wait for the mutex.
16020 Increased the maximum ASL Field size from 64K bits to 4G bits.
16022 Completed implementation of the external Global Lock interfaces --
16023 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
16024 Handler parameters were added.
16026 Completed another pass at removing warnings and issues when
16027 compiling with 64-bit compilers. The code now compiles cleanly
16028 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
16029 add and subtract (diff) macros have changed considerably.
16032 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
16033 64-bit platforms, 32-bits on all others. This type is used
16034 wherever memory allocation and/or the C sizeof() operator is used,
16035 and affects the OSL memory allocation interfaces AcpiOsAllocate
16036 and AcpiOsCallocate.
16038 Implemented sticky user breakpoints in the AML debugger.
16040 Code and Data Size: Current core subsystem library sizes are shown
16041 below. These are the code and data sizes for the acpica.lib
16042 produced by the Microsoft Visual C++ 6.0 compiler, and these
16043 values do not include any ACPI driver or OSPM code. The debug
16044 version of the code includes the debug output trace mechanism and
16045 has a larger code and data size. Note that these values will vary
16046 depending on the efficiency of the compiler and the compiler
16047 options used during generation.
16049 Previous Release (12_05_01)
16050 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16051 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16053 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
16054 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
16056 3) ASL Compiler, version X2034:
16058 Now checks for (and generates an error if detected) the use of a
16059 Break or Continue statement without an enclosing While statement.
16062 Successfully generated the compiler with the Intel 64-bit C
16065 ----------------------------------------
16066 Summary of changes for this label: 12_05_01
16068 1) ACPI CA Core Subsystem:
16070 The ACPI 2.0 CopyObject operator is fully implemented. This
16071 operator creates a new copy of an object (and is also used to
16072 bypass the "implicit conversion" mechanism of the Store operator.)
16074 The ACPI 2.0 semantics for the SizeOf operator are fully
16075 implemented. The change is that performing a SizeOf on a
16076 reference object causes an automatic dereference of the object to
16077 tha actual value before the size is evaluated. This behavior was
16078 undefined in ACPI 1.0.
16080 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
16081 have been implemented. The interrupt polarity and mode are now
16084 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
16085 appearing in Package objects were not properly converted to
16086 integers when the internal Package was converted to an external
16087 object (via the AcpiEvaluateObject interface.)
16089 Fixed a problem with the namespace object deletion mechanism for
16090 objects created by control methods. There were two parts to this
16091 problem: 1) Objects created during the initialization phase method
16092 parse were not being deleted, and 2) The object owner ID mechanism
16093 to track objects was broken.
16095 Fixed a problem where the use of the ASL Scope operator within a
16096 control method would result in an invalid opcode exception.
16098 Fixed a problem introduced in the previous label where the buffer
16099 length required for the _PRT structure was not being returned
16102 Code and Data Size: Current core subsystem library sizes are shown
16103 below. These are the code and data sizes for the acpica.lib
16104 produced by the Microsoft Visual C++ 6.0 compiler, and these
16105 values do not include any ACPI driver or OSPM code. The debug
16106 version of the code includes the debug output trace mechanism and
16107 has a larger code and data size. Note that these values will vary
16108 depending on the efficiency of the compiler and the compiler
16109 options used during generation.
16111 Previous Release (11_20_01)
16112 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16113 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16116 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
16117 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
16121 Updated all files to apply cleanly against 2.4.16.
16123 Added basic PCI Interrupt Routing Table (PRT) support for IA32
16124 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
16125 version supports both static and dyanmic PRT entries, but dynamic
16126 entries are treated as if they were static (not yet
16127 reconfigurable). Architecture- specific code to use this data is
16128 absent on IA32 but should be available shortly.
16130 Changed the initialization sequence to start the ACPI interpreter
16131 (acpi_init) prior to initialization of the PCI driver (pci_init)
16132 in init/main.c. This ordering is required to support PRT and
16133 facilitate other (future) enhancement. A side effect is that the
16134 ACPI bus driver and certain device drivers can no longer be loaded
16137 Modified the 'make menuconfig' options to allow PCI Interrupt
16138 Routing support to be included without the ACPI Bus and other
16141 3) ASL Compiler, version X2033:
16143 Fixed some issues with the use of the new CopyObject and
16144 DataTableRegion operators. Both are fully functional.
16146 ----------------------------------------
16147 Summary of changes for this label: 11_20_01
16149 20 November 2001. Summary of changes for this release.
16151 1) ACPI CA Core Subsystem:
16153 Updated Index support to match ACPI 2.0 semantics. Storing a
16154 Integer, String, or Buffer to an Index of a Buffer will store only
16155 the least-significant byte of the source to the Indexed buffer
16156 byte. Multiple writes are not performed.
16158 Fixed a problem where the access type used in an AccessAs ASL
16159 operator was not recorded correctly into the field object.
16161 Fixed a problem where ASL Event objects were created in a
16162 signalled state. Events are now created in an unsignalled state.
16164 The internal object cache is now purged after table loading and
16165 initialization to reduce the use of dynamic kernel memory -- on
16166 the assumption that object use is greatest during the parse phase
16167 of the entire table (versus the run-time use of individual control
16170 ACPI 2.0 variable-length packages are now fully operational.
16172 Code and Data Size: Code and Data optimizations have permitted new
16173 feature development with an actual reduction in the library size.
16174 Current core subsystem library sizes are shown below. These are
16175 the code and data sizes for the acpica.lib produced by the
16176 Microsoft Visual C++ 6.0 compiler, and these values do not include
16177 any ACPI driver or OSPM code. The debug version of the code
16178 includes the debug output trace mechanism and has a larger code
16179 and data size. Note that these values will vary depending on the
16180 efficiency of the compiler and the compiler options used during
16183 Previous Release (11_09_01):
16184 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16185 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16188 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
16189 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
16193 Enhanced the ACPI boot-time initialization code to allow the use
16194 of Local APIC tables for processor enumeration on IA-32, and to
16195 pave the way for a fully MPS-free boot (on SMP systems) in the
16196 near future. This functionality replaces
16197 arch/i386/kernel/acpitables.c, which was introduced in an earlier
16198 2.4.15-preX release. To enable this feature you must add
16199 "acpi_boot=on" to the kernel command line -- see the help entry
16200 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
16203 Restructured the configuration options to allow boot-time table
16204 parsing support without inclusion of the ACPI Interpreter (and
16207 NOTE: This release does not include fixes for the reported events,
16208 power-down, and thermal passive cooling issues (coming soon).
16212 Added additional typechecking for Fields within restricted access
16213 Operation Regions. All fields within EC and CMOS regions must be
16214 declared with ByteAcc. All fields withing SMBus regions must be
16215 declared with the BufferAcc access type.
16217 Fixed a problem where the listing file output of control methods
16218 no longer interleaved the actual AML code with the ASL source
16224 ----------------------------------------
16225 Summary of changes for this label: 11_09_01
16227 1) ACPI CA Core Subsystem:
16229 Implemented ACPI 2.0-defined support for writes to fields with a
16230 Buffer, String, or Integer source operand that is smaller than the
16231 target field. In these cases, the source operand is zero-extended
16232 to fill the target field.
16234 Fixed a problem where a Field starting bit offset (within the
16235 parent operation region) was calculated incorrectly if the
16237 alignment of the field differed from the access width. This
16238 affected CreateWordField, CreateDwordField, CreateQwordField, and
16239 possibly other fields that use the "AccessAny" keyword.
16241 Fixed a problem introduced in the 11_02_01 release where indirect
16242 stores through method arguments did not operate correctly.
16246 Implemented boot-time ACPI table parsing support
16247 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
16248 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
16249 legacy BIOS interfaces (e.g. MPS) for the configuration of system
16250 processors, memory, and interrupts during setup_arch(). Note that
16251 this patch does not include the required architecture-specific
16252 changes required to apply this information -- subsequent patches
16253 will be posted for both IA32 and IA64 to achieve this.
16255 Added low-level sleep support for IA32 platforms, courtesy of Pat
16256 Mochel. This allows IA32 systems to transition to/from various
16257 sleeping states (e.g. S1, S3), although the lack of a centralized
16258 driver model and power-manageable drivers will prevent its
16259 (successful) use on most systems.
16261 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
16262 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
16263 tables" option, etc.
16265 Increased the default timeout for the EC driver from 1ms to 10ms
16266 (1000 cycles of 10us) to try to address AE_TIME errors during EC
16269 ----------------------------------------
16270 Summary of changes for this label: 11_02_01
16272 1) ACPI CA Core Subsystem:
16274 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
16275 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
16278 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
16279 changes to support ACPI 2.0 Qword field access. Read/Write
16280 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
16281 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
16282 the value parameter for the address space handler interface is now
16283 an ACPI_INTEGER. OSL implementations of these interfaces must now
16284 handle the case where the Width parameter is 64.
16286 Index Fields: Fixed a problem where unaligned bit assembly and
16287 disassembly for IndexFields was not supported correctly.
16289 Index and Bank Fields: Nested Index and Bank Fields are now
16290 supported. During field access, a check is performed to ensure
16291 that the value written to an Index or Bank register is not out of
16292 the range of the register. The Index (or Bank) register is
16293 written before each access to the field data. Future support will
16294 include allowing individual IndexFields to be wider than the
16295 DataRegister width.
16297 Fields: Fixed a problem where the AML interpreter was incorrectly
16298 attempting to write beyond the end of a Field/OpRegion. This was
16299 a boundary case that occurred when a DWORD field was written to a
16300 BYTE access OpRegion, forcing multiple writes and causing the
16301 interpreter to write one datum too many.
16303 Fields: Fixed a problem with Field/OpRegion access where the
16304 starting bit address of a field was incorrectly calculated if the
16305 current access type was wider than a byte (WordAcc, DwordAcc, or
16308 Fields: Fixed a problem where forward references to individual
16309 FieldUnits (individual Field names within a Field definition) were
16310 not resolved during the AML table load.
16312 Fields: Fixed a problem where forward references from a Field
16313 definition to the parent Operation Region definition were not
16314 resolved during the AML table load.
16316 Fields: Duplicate FieldUnit names within a scope are now detected
16317 during AML table load.
16319 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
16320 returned an incorrect name for the root node.
16322 Code and Data Size: Code and Data optimizations have permitted new
16323 feature development with an actual reduction in the library size.
16324 Current core subsystem library sizes are shown below. These are
16325 the code and data sizes for the acpica.lib produced by the
16326 Microsoft Visual C++ 6.0 compiler, and these values do not include
16327 any ACPI driver or OSPM code. The debug version of the code
16328 includes the debug output trace mechanism and has a larger code
16329 and data size. Note that these values will vary depending on the
16330 efficiency of the compiler and the compiler options used during
16333 Previous Release (10_18_01):
16334 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16335 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16338 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
16339 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
16343 Improved /proc processor output (Pavel Machek) Re-added
16344 MODULE_LICENSE("GPL") to all modules.
16346 3) ASL Compiler version X2030:
16348 Duplicate FieldUnit names within a scope are now detected and
16353 Programmer Reference updated to reflect OSL and address space
16354 handler interface changes described above.
16356 ----------------------------------------
16357 Summary of changes for this label: 10_18_01
16359 ACPI CA Core Subsystem:
16361 Fixed a problem with the internal object reference count mechanism
16362 that occasionally caused premature object deletion. This resolves
16363 all of the outstanding problem reports where an object is deleted
16364 in the middle of an interpreter evaluation. Although this problem
16365 only showed up in rather obscure cases, the solution to the
16366 problem involved an adjustment of all reference counts involving
16367 objects attached to namespace nodes.
16369 Fixed a problem with Field support in the interpreter where
16370 writing to an aligned field whose length is an exact multiple (2
16371 or greater) of the field access granularity would cause an attempt
16372 to write beyond the end of the field.
16374 The top level AML opcode execution functions within the
16375 interpreter have been renamed with a more meaningful and
16376 consistent naming convention. The modules exmonad.c and
16377 exdyadic.c were eliminated. New modules are exoparg1.c,
16378 exoparg2.c, exoparg3.c, and exoparg6.c.
16380 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
16382 Fixed a problem where the AML debugger was causing some internal
16383 objects to not be deleted during subsystem termination.
16385 Fixed a problem with the external AcpiEvaluateObject interface
16386 where the subsystem would fault if the named object to be
16387 evaluated refered to a constant such as Zero, Ones, etc.
16389 Fixed a problem with IndexFields and BankFields where the
16390 subsystem would fault if the index, data, or bank registers were
16391 not defined in the same scope as the field itself.
16393 Added printf format string checking for compilers that support
16394 this feature. Corrected more than 50 instances of issues with
16395 format specifiers within invocations of ACPI_DEBUG_PRINT
16396 throughout the core subsystem code.
16398 The ASL "Revision" operator now returns the ACPI support level
16399 implemented in the core - the value "2" since the ACPI 2.0 support
16400 is more than 50% implemented.
16402 Enhanced the output of the AML debugger "dump namespace" command
16403 to output in a more human-readable form.
16405 Current core subsystem library code sizes are shown below. These
16407 are the code and data sizes for the acpica.lib produced by the
16408 Microsoft Visual C++ 6.0 compiler, and these values do not include
16409 any ACPI driver or OSPM code. The debug version of the code
16410 includes the full debug trace mechanism -- leading to a much
16412 larger code and data size. Note that these values will vary
16413 depending on the efficiency of the compiler and the compiler
16414 options used during generation.
16416 Previous Label (09_20_01):
16417 Non-Debug Version: 65K Code, 5K Data, 70K Total
16418 Debug Version: 138K Code, 58K Data, 196K Total
16422 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
16423 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
16427 Implemented a "Bad BIOS Blacklist" to track machines that have
16428 known ASL/AML problems.
16430 Enhanced the /proc interface for the thermal zone driver and added
16431 support for _HOT (the critical suspend trip point). The 'info'
16432 file now includes threshold/policy information, and allows setting
16433 of _SCP (cooling preference) and _TZP (polling frequency) values
16434 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
16435 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
16436 preference to the passive/quiet mode (if supported by the ASL).
16438 Implemented a workaround for a gcc bug that resuted in an OOPs
16439 when loading the control method battery driver.
16441 ----------------------------------------
16442 Summary of changes for this label: 09_20_01
16444 ACPI CA Core Subsystem:
16446 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
16447 modified to allow individual GPE levels to be flagged as wake-
16448 enabled (i.e., these GPEs are to remain enabled when the platform
16451 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
16452 support wake-enabled GPEs. This means that upon entering the
16453 sleep state, all GPEs that are not wake-enabled are disabled.
16454 When leaving the sleep state, these GPEs are reenabled.
16456 A local double-precision divide/modulo module has been added to
16457 enhance portability to OS kernels where a 64-bit math library is
16458 not available. The new module is "utmath.c".
16460 Several optimizations have been made to reduce the use of CPU
16461 stack. Originally over 2K, the maximum stack usage is now below
16462 2K at 1860 bytes (1.82k)
16464 Fixed a problem with the AcpiGetFirmwareTable interface where the
16465 root table pointer was not mapped into a logical address properly.
16467 Fixed a problem where a NULL pointer was being dereferenced in the
16468 interpreter code for the ASL Notify operator.
16470 Fixed a problem where the use of the ASL Revision operator
16471 returned an error. This operator now returns the current version
16472 of the ACPI CA core subsystem.
16474 Fixed a problem where objects passed as control method parameters
16475 to AcpiEvaluateObject were always deleted at method termination.
16476 However, these objects may end up being stored into the namespace
16477 by the called method. The object reference count mechanism was
16478 applied to these objects instead of a force delete.
16480 Fixed a problem where static strings or buffers (contained in the
16481 AML code) that are declared as package elements within the ASL
16482 code could cause a fault because the interpreter would attempt to
16483 delete them. These objects are now marked with the "static
16484 object" flag to prevent any attempt to delete them.
16486 Implemented an interpreter optimization to use operands directly
16487 from the state object instead of extracting the operands to local
16488 variables. This reduces stack use and code size, and improves
16491 The module exxface.c was eliminated as it was an unnecessary extra
16494 Current core subsystem library code sizes are shown below. These
16495 are the code and data sizes for the acpica.lib produced by the
16496 Microsoft Visual C++ 6.0 compiler, and these values do not include
16497 any ACPI driver or OSPM code. The debug version of the code
16498 includes the full debug trace mechanism -- leading to a much
16499 larger code and data size. Note that these values will vary
16500 depending on the efficiency of the compiler and the compiler
16501 options used during generation.
16503 Non-Debug Version: 65K Code, 5K Data, 70K Total
16504 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
16505 Total (Previously 195K)
16509 Support for ACPI 2.0 64-bit integers has been added. All ACPI
16510 Integer objects are now 64 bits wide
16512 All Acpi data types and structures are now in lower case. Only
16513 Acpi macros are upper case for differentiation.
16517 Changes to the external interfaces as described above.
16519 ----------------------------------------
16520 Summary of changes for this label: 08_31_01
16522 ACPI CA Core Subsystem:
16524 A bug with interpreter implementation of the ASL Divide operator
16525 was found and fixed. The implicit function return value (not the
16526 explicit store operands) was returning the remainder instead of
16527 the quotient. This was a longstanding bug and it fixes several
16528 known outstanding issues on various platforms.
16530 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
16531 been further optimized for size. There are 700 invocations of the
16532 DEBUG_PRINT macro alone, so each optimization reduces the size of
16533 the debug version of the subsystem significantly.
16535 A stack trace mechanism has been implemented. The maximum stack
16536 usage is about 2K on 32-bit platforms. The debugger command "stat
16537 stack" will display the current maximum stack usage.
16539 All public symbols and global variables within the subsystem are
16540 now prefixed with the string "Acpi". This keeps all of the
16541 symbols grouped together in a kernel map, and avoids conflicts
16542 with other kernel subsystems.
16544 Most of the internal fixed lookup tables have been moved into the
16545 code segment via the const operator.
16547 Several enhancements have been made to the interpreter to both
16548 reduce the code size and improve performance.
16550 Current core subsystem library code sizes are shown below. These
16551 are the code and data sizes for the acpica.lib produced by the
16552 Microsoft Visual C++ 6.0 compiler, and these values do not include
16553 any ACPI driver or OSPM code. The debug version of the code
16554 includes the full debug trace mechanism which contains over 700
16555 invocations of the DEBUG_PRINT macro, 500 function entry macro
16556 invocations, and over 900 function exit macro invocations --
16557 leading to a much larger code and data size. Note that these
16558 values will vary depending on the efficiency of the compiler and
16559 the compiler options used during generation.
16561 Non-Debug Version: 64K Code, 5K Data, 69K Total
16562 Debug Version: 137K Code, 58K Data, 195K Total
16566 Implemented wbinvd() macro, pending a kernel-wide definition.
16568 Fixed /proc/acpi/event to handle poll() and short reads.
16570 ASL Compiler, version X2026:
16572 Fixed a problem introduced in the previous label where the AML
16574 code emitted for package objects produced packages with zero
16577 ----------------------------------------
16578 Summary of changes for this label: 08_16_01
16580 ACPI CA Core Subsystem:
16582 The following ACPI 2.0 ASL operators have been implemented in the
16583 AML interpreter (These are already supported by the Intel ASL
16584 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
16585 ToBuffer. Support for 64-bit AML constants is implemented in the
16586 AML parser, debugger, and disassembler.
16588 The internal memory tracking mechanism (leak detection code) has
16589 been upgraded to reduce the memory overhead (a separate tracking
16590 block is no longer allocated for each memory allocation), and now
16591 supports all of the internal object caches.
16593 The data structures and code for the internal object caches have
16594 been coelesced and optimized so that there is a single cache and
16595 memory list data structure and a single group of functions that
16596 implement generic cache management. This has reduced the code
16597 size in both the debug and release versions of the subsystem.
16599 The DEBUG_PRINT macro(s) have been optimized for size and replaced
16600 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
16601 different, because it generates a single call to an internal
16602 function. This results in a savings of about 90 bytes per
16603 invocation, resulting in an overall code and data savings of about
16604 16% in the debug version of the subsystem.
16608 Fixed C3 disk corruption problems and re-enabled C3 on supporting
16611 Integrated low-level sleep code by Patrick Mochel.
16613 Further tweaked source code Linuxization.
16619 Support for ACPI 2.0 variable length packages is fixed/completed.
16621 Fixed a problem where the optional length parameter for the ACPI
16622 2.0 ToString operator.
16624 Fixed multiple extraneous error messages when a syntax error is
16625 detected within the declaration line of a control method.
16627 ----------------------------------------
16628 Summary of changes for this label: 07_17_01
16630 ACPI CA Core Subsystem:
16632 Added a new interface named AcpiGetFirmwareTable to obtain any
16633 ACPI table via the ACPI signature. The interface can be called at
16634 any time during kernel initialization, even before the kernel
16635 virtual memory manager is initialized and paging is enabled. This
16636 allows kernel subsystems to obtain ACPI tables very early, even
16637 before the ACPI CA subsystem is initialized.
16639 Fixed a problem where Fields defined with the AnyAcc attribute
16640 could be resolved to the incorrect address under the following
16641 conditions: 1) the field width is larger than 8 bits and 2) the
16642 parent operation region is not defined on a DWORD boundary.
16644 Fixed a problem where the interpreter is not being locked during
16645 namespace initialization (during execution of the _INI control
16646 methods), causing an error when an attempt is made to release it
16649 ACPI 2.0 support in the AML Interpreter has begun and will be
16650 ongoing throughout the rest of this year. In this label, The Mod
16651 operator is implemented.
16653 Added a new data type to contain full PCI addresses named
16654 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
16655 and Function values.
16659 Enhanced the Linux version of the source code to change most
16660 capitalized ACPI type names to lowercase. For example, all
16661 instances of ACPI_STATUS are changed to acpi_status. This will
16662 result in a large diff, but the change is strictly cosmetic and
16663 aligns the CA code closer to the Linux coding standard.
16667 The interfaces to the PCI configuration space have been changed to
16668 add the PCI Segment number and to split the single 32-bit combined
16669 DeviceFunction field into two 16-bit fields. This was
16670 accomplished by moving the four values that define an address in
16671 PCI configuration space (segment, bus, device, and function) to
16672 the new ACPI_PCI_ID structure.
16674 The changes to the PCI configuration space interfaces led to a
16675 reexamination of the complete set of address space access
16676 interfaces for PCI, I/O, and Memory. The previously existing 18
16677 interfaces have proven difficult to maintain (any small change
16678 must be propagated across at least 6 interfaces) and do not easily
16679 allow for future expansion to 64 bits if necessary. Also, on some
16680 systems, it would not be appropriate to demultiplex the access
16681 width (8, 16, 32,or 64) before calling the OSL if the
16682 corresponding native OS interfaces contain a similar access width
16683 parameter. For these reasons, the 18 address space interfaces
16684 have been replaced by these 6 new ones:
16686 AcpiOsReadPciConfiguration
16687 AcpiOsWritePciConfiguration
16693 Added a new interface named AcpiOsGetRootPointer to allow the OSL
16694 to perform the platform and/or OS-specific actions necessary to
16695 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
16696 interface will simply call down to the CA core to perform the low-
16697 memory search for the table. On IA-64, the RSDP is obtained from
16698 EFI. Migrating this interface to the OSL allows the CA core to
16700 remain OS and platform independent.
16702 Added a new interface named AcpiOsSignal to provide a generic
16703 "function code and pointer" interface for various miscellaneous
16704 signals and notifications that must be made to the host OS. The
16705 first such signals are intended to support the ASL Fatal and
16706 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
16707 interface has been obsoleted.
16709 The definition of the AcpiFormatException interface has been
16710 changed to simplify its use. The caller no longer must supply a
16711 buffer to the call; A pointer to a const string is now returned
16712 directly. This allows the call to be easily used in printf
16713 statements, etc. since the caller does not have to manage a local
16717 ASL Compiler, Version X2025:
16719 The ACPI 2.0 Switch/Case/Default operators have been implemented
16720 and are fully functional. They will work with all ACPI 1.0
16721 interpreters, since the operators are simply translated to If/Else
16724 The ACPI 2.0 ElseIf operator is implemented and will also work
16725 with 1.0 interpreters, for the same reason.
16727 Implemented support for ACPI 2.0 variable-length packages. These
16728 packages have a separate opcode, and their size is determined by
16729 the interpreter at run-time.
16731 Documentation The ACPI CA Programmer Reference has been updated to
16732 reflect the new interfaces and changes to existing interfaces.
16734 ------------------------------------------
16735 Summary of changes for this label: 06_15_01
16737 ACPI CA Core Subsystem:
16739 Fixed a problem where a DWORD-accessed field within a Buffer
16740 object would get its byte address inadvertently rounded down to
16741 the nearest DWORD. Buffers are always Byte-accessible.
16743 ASL Compiler, version X2024:
16745 Fixed a problem where the Switch() operator would either fault or
16746 hang the compiler. Note however, that the AML code for this ACPI
16747 2.0 operator is not yet implemented.
16749 Compiler uses the new AcpiOsGetTimer interface to obtain compile
16752 Implementation of the CreateField operator automatically converts
16753 a reference to a named field within a resource descriptor from a
16754 byte offset to a bit offset if required.
16756 Added some missing named fields from the resource descriptor
16757 support. These are the names that are automatically created by the
16758 compiler to reference fields within a descriptor. They are only
16759 valid at compile time and are not passed through to the AML
16762 Resource descriptor named fields are now typed as Integers and
16763 subject to compile-time typechecking when used in expressions.
16765 ------------------------------------------
16766 Summary of changes for this label: 05_18_01
16768 ACPI CA Core Subsystem:
16770 Fixed a couple of problems in the Field support code where bits
16771 from adjacent fields could be returned along with the proper field
16772 bits. Restructured the field support code to improve performance,
16773 readability and maintainability.
16775 New DEBUG_PRINTP macro automatically inserts the procedure name
16776 into the output, saving hundreds of copies of procedure name
16777 strings within the source, shrinking the memory footprint of the
16778 debug version of the core subsystem.
16780 Source Code Structure:
16782 The source code directory tree was restructured to reflect the
16783 current organization of the component architecture. Some files
16784 and directories have been moved and/or renamed.
16788 Fixed leaking kacpidpc processes.
16790 Fixed queueing event data even when /proc/acpi/event is not
16793 ASL Compiler, version X2020:
16795 Memory allocation performance enhancement - over 24X compile time
16796 improvement on large ASL files. Parse nodes and namestring
16797 buffers are now allocated from a large internal compiler buffer.
16799 The temporary .SRC file is deleted unless the "-s" option is
16802 The "-d" debug output option now sends all output to the .DBG file
16803 instead of the console.
16805 "External" second parameter is now optional
16807 "ElseIf" syntax now properly allows the predicate
16809 Last operand to "Load" now recognized as a Target operand
16811 Debug object can now be used anywhere as a normal object.
16813 ResourceTemplate now returns an object of type BUFFER
16815 EISAID now returns an object of type INTEGER
16817 "Index" now works with a STRING operand
16819 "LoadTable" now accepts optional parameters
16821 "ToString" length parameter is now optional
16823 "Interrupt (ResourceType," parse error fixed.
16825 "Register" with a user-defined region space parse error fixed
16827 Escaped backslash at the end of a string ("\\") scan/parse error
16830 "Revision" is now an object of type INTEGER.
16834 ------------------------------------------
16835 Summary of changes for this label: 05_02_01
16839 /proc/acpi/event now blocks properly.
16841 Removed /proc/sys/acpi. You can still dump your DSDT from
16844 ACPI CA Core Subsystem:
16846 Fixed a problem introduced in the previous label where some of the
16847 "small" resource descriptor types were not recognized.
16849 Improved error messages for the case where an ASL Field is outside
16850 the range of the parent operation region.
16852 ASL Compiler, version X2018:
16855 Added error detection for ASL Fields that extend beyond the length
16856 of the parent operation region (only if the length of the region
16857 is known at compile time.) This includes fields that have a
16858 minimum access width that is smaller than the parent region, and
16859 individual field units that are partially or entirely beyond the
16860 extent of the parent.
16864 ------------------------------------------
16865 Summary of changes for this label: 04_27_01
16867 ACPI CA Core Subsystem:
16869 Fixed a problem where the namespace mutex could be released at the
16870 wrong time during execution of AcpiRemoveAddressSpaceHandler.
16872 Added optional thread ID output for debug traces, to simplify
16873 debugging of multiple threads. Added context switch notification
16874 when the debug code realizes that a different thread is now
16875 executing ACPI code.
16877 Some additional external data types have been prefixed with the
16878 string "ACPI_" for consistency. This may effect existing code.
16879 The data types affected are the external callback typedefs - e.g.,
16881 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
16885 Fixed an issue with the OSL semaphore implementation where a
16886 thread was waking up with an error from receiving a SIGCHLD
16889 Linux version of ACPI CA now uses the system C library for string
16890 manipulation routines instead of a local implementation.
16892 Cleaned up comments and removed TBDs.
16894 ASL Compiler, version X2017:
16896 Enhanced error detection and reporting for all file I/O
16901 Programmer Reference updated to version 1.06.
16905 ------------------------------------------
16906 Summary of changes for this label: 04_13_01
16908 ACPI CA Core Subsystem:
16910 Restructured support for BufferFields and RegionFields.
16911 BankFields support is now fully operational. All known 32-bit
16912 limitations on field sizes have been removed. Both BufferFields
16913 and (Operation) RegionFields are now supported by the same field
16916 Resource support now supports QWORD address and IO resources. The
16917 16/32/64 bit address structures and the Extended IRQ structure
16918 have been changed to properly handle Source Resource strings.
16920 A ThreadId of -1 is now used to indicate a "mutex not acquired"
16921 condition internally and must never be returned by AcpiOsThreadId.
16922 This reserved value was changed from 0 since Unix systems allow a
16927 Driver code reorganized to enhance portability
16929 Added a kernel configuration option to control ACPI_DEBUG
16931 Fixed the EC driver to honor _GLK.
16933 ASL Compiler, version X2016:
16935 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
16936 address space was set to 0, not 0x7f as it should be.
16938 ------------------------------------------
16939 Summary of changes for this label: 03_13_01
16941 ACPI CA Core Subsystem:
16943 During ACPI initialization, the _SB_._INI method is now run if
16946 Notify handler fix - notifies are deferred until the parent method
16947 completes execution. This fixes the "mutex already acquired"
16948 issue seen occasionally.
16950 Part of the "implicit conversion" rules in ACPI 2.0 have been
16951 found to cause compatibility problems with existing ASL/AML. The
16952 convert "result-to-target-type" implementation has been removed
16953 for stores to method Args and Locals. Source operand conversion
16954 is still fully implemented. Possible changes to ACPI 2.0
16955 specification pending.
16957 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
16960 Fix for compiler warnings for 64-bit compiles.
16964 /proc output aligned for easier parsing.
16966 Release-version compile problem fixed.
16968 New kernel configuration options documented in Configure.help.
16970 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
16975 Power resource driver integrated with bus manager.
16977 Fixed kernel fault during active cooling for thermal zones.
16981 The source code tree has been restructured.
16985 ------------------------------------------
16986 Summary of changes for this label: 03_02_01
16988 Linux OS Services Layer (OSL):
16990 Major revision of all Linux-specific code.
16992 Modularized all ACPI-specific drivers.
16994 Added new thermal zone and power resource drivers.
16996 Revamped /proc interface (new functionality is under /proc/acpi).
16998 New kernel configuration options.
17000 Linux known issues:
17002 New kernel configuration options not documented in Configure.help
17006 Module dependencies not currently implemented. If used, they
17007 should be loaded in this order: busmgr, power, ec, system,
17008 processor, battery, ac_adapter, button, thermal.
17010 Modules will not load if CONFIG_MODVERSION is set.
17012 IBM 600E - entering S5 may reboot instead of shutting down.
17014 IBM 600E - Sleep button may generate "Invalid <NULL> context"
17017 Some systems may fail with "execution mutex already acquired"
17020 ACPI CA Core Subsystem:
17022 Added a new OSL Interface, AcpiOsGetThreadId. This was required
17023 for the deadlock detection code. Defined to return a non-zero, 32-
17024 bit thread ID for the currently executing thread. May be a non-
17025 zero constant integer on single-thread systems.
17027 Implemented deadlock detection for internal subsystem mutexes. We
17028 may add conditional compilation for this code (debug only) later.
17030 ASL/AML Mutex object semantics are now fully supported. This
17031 includes multiple acquires/releases by owner and support for the
17033 Mutex SyncLevel parameter.
17035 A new "Force Release" mechanism automatically frees all ASL
17036 Mutexes that have been acquired but not released when a thread
17037 exits the interpreter. This forces conformance to the ACPI spec
17038 ("All mutexes must be released when an invocation exits") and
17039 prevents deadlocked ASL threads. This mechanism can be expanded
17040 (later) to monitor other resource acquisitions if OEM ASL code
17041 continues to misbehave (which it will).
17043 Several new ACPI exception codes have been added for the Mutex
17046 Recursive method calls are now allowed and supported (the ACPI
17047 spec does in fact allow recursive method calls.) The number of
17048 recursive calls is subject to the restrictions imposed by the
17049 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
17052 Implemented support for the SyncLevel parameter for control
17053 methods (ACPI 2.0 feature)
17055 Fixed a deadlock problem when multiple threads attempted to use
17058 Fixed a problem where the string length of a String package
17059 element was not always set in a package returned from
17060 AcpiEvaluateObject.
17062 Fixed a problem where the length of a String package element was
17063 not always included in the length of the overall package returned
17064 from AcpiEvaluateObject.
17066 Added external interfaces (Acpi*) to the ACPI debug memory
17067 manager. This manager keeps a list of all outstanding
17068 allocations, and can therefore detect memory leaks and attempts to
17069 free memory blocks more than once. Useful for code such as the
17070 power manager, etc. May not be appropriate for device drivers.
17071 Performance with the debug code enabled is slow.
17073 The ACPI Global Lock is now an optional hardware element.
17075 ASL Compiler Version X2015:
17077 Integrated changes to allow the compiler to be generated on
17078 multiple platforms.
17080 Linux makefile added to generate the compiler on Linux
17084 All platform-specific headers have been moved to their own
17085 subdirectory, Include/Platform.
17087 New source file added, Interpreter/ammutex.c
17089 New header file, Include/acstruct.h
17093 The programmer reference has been updated for the following new
17094 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
17096 ------------------------------------------
17097 Summary of changes for this label: 02_08_01
17099 Core ACPI CA Subsystem: Fixed a problem where an error was
17100 incorrectly returned if the return resource buffer was larger than
17101 the actual data (in the resource interfaces).
17103 References to named objects within packages are resolved to the
17105 full pathname string before packages are returned directly (via
17106 the AcpiEvaluateObject interface) or indirectly via the resource
17109 Linux OS Services Layer (OSL):
17111 Improved /proc battery interface.
17114 Added C-state debugging output and other miscellaneous fixes.
17116 ASL Compiler Version X2014:
17118 All defined method arguments can now be used as local variables,
17119 including the ones that are not actually passed in as parameters.
17120 The compiler tracks initialization of the arguments and issues an
17121 exception if they are used without prior assignment (just like
17124 The -o option now specifies a filename prefix that is used for all
17125 output files, including the AML output file. Otherwise, the
17126 default behavior is as follows: 1) the AML goes to the file
17127 specified in the DSDT. 2) all other output files use the input
17128 source filename as the base.
17130 ------------------------------------------
17131 Summary of changes for this label: 01_25_01
17133 Core ACPI CA Subsystem: Restructured the implementation of object
17134 store support within the interpreter. This includes support for
17135 the Store operator as well as any ASL operators that include a
17138 Partially implemented support for Implicit Result-to-Target
17139 conversion. This is when a result object is converted on the fly
17140 to the type of an existing target object. Completion of this
17141 support is pending further analysis of the ACPI specification
17142 concerning this matter.
17144 CPU-specific code has been removed from the subsystem (hardware
17147 New Power Management Timer functions added
17149 Linux OS Services Layer (OSL): Moved system state transition code
17150 to the core, fixed it, and modified Linux OSL accordingly.
17152 Fixed C2 and C3 latency calculations.
17155 We no longer use the compilation date for the version message on
17156 initialization, but retrieve the version from AcpiGetSystemInfo().
17158 Incorporated for fix Sony VAIO machines.
17160 Documentation: The Programmer Reference has been updated and
17164 ASL Compiler: Version X2013: Fixed a problem where the line
17165 numbering and error reporting could get out of sync in the
17166 presence of multiple include files.
17168 ------------------------------------------
17169 Summary of changes for this label: 01_15_01
17171 Core ACPI CA Subsystem:
17173 Implemented support for type conversions in the execution of the
17174 ASL Concatenate operator (The second operand is converted to
17175 match the type of the first operand before concatenation.)
17177 Support for implicit source operand conversion is partially
17178 implemented. The ASL source operand types Integer, Buffer, and
17179 String are freely interchangeable for most ASL operators and are
17180 converted by the interpreter on the fly as required. Implicit
17181 Target operand conversion (where the result is converted to the
17182 target type before storing) is not yet implemented.
17184 Support for 32-bit and 64-bit BCD integers is implemented.
17186 Problem fixed where a field read on an aligned field could cause a
17187 read past the end of the field.
17189 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
17190 does not return a value, but the caller expects one. (The ASL
17191 compiler flags this as a warning.)
17196 1. Static typechecking of all operands is implemented. This
17197 prevents the use of invalid objects (such as using a Package where
17198 an Integer is required) at compile time instead of at interpreter
17200 2. The ASL source line is printed with ALL errors and warnings.
17201 3. Bug fix for source EOF without final linefeed.
17202 4. Debug option is split into a parse trace and a namespace trace.
17203 5. Namespace output option (-n) includes initial values for
17204 integers and strings.
17205 6. Parse-only option added for quick syntax checking.
17206 7. Compiler checks for duplicate ACPI name declarations
17209 1. Relaxed typechecking to allow interchangeability between
17210 strings, integers, and buffers. These types are now converted by
17211 the interpreter at runtime.
17212 2. Compiler reports time taken by each internal subsystem in the
17216 ------------------------------------------
17217 Summary of changes for this label: 12_14_00
17221 This is the first official release of the compiler. Since the
17222 compiler requires elements of the Core Subsystem, this label
17223 synchronizes everything.
17225 ------------------------------------------
17226 Summary of changes for this label: 12_08_00
17229 Fixed a problem where named references within the ASL definition
17230 of both OperationRegions and CreateXXXFields did not work
17231 properly. The symptom was an AE_AML_OPERAND_TYPE during
17232 initialization of the region/field. This is similar (but not
17233 related internally) to the problem that was fixed in the last
17236 Implemented both 32-bit and 64-bit support for the BCD ASL
17237 functions ToBCD and FromBCD.
17239 Updated all legal headers to include "2000" in the copyright
17242 ------------------------------------------
17243 Summary of changes for this label: 12_01_00
17245 Fixed a problem where method invocations within the ASL definition
17246 of both OperationRegions and CreateXXXFields did not work
17247 properly. The symptom was an AE_AML_OPERAND_TYPE during
17248 initialization of the region/field:
17250 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
17251 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
17254 Fixed a problem where operators with more than one nested
17255 subexpression would fail. The symptoms were varied, by mostly
17256 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
17257 problem that has gone unnoticed until now.
17259 Subtract (Add (1,2), Multiply (3,4))
17261 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
17262 previous build (The prefix part of a relative path was handled
17265 Fixed a problem where Operation Region initialization failed if
17266 the operation region name was a "namepath" instead of a simple
17267 "nameseg". Symptom was an AE_NO_OPERAND error.
17269 Fixed a problem where an assignment to a local variable via the
17270 indirect RefOf mechanism only worked for the first such
17271 assignment. Subsequent assignments were ignored.
17273 ------------------------------------------
17274 Summary of changes for this label: 11_15_00
17276 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
17277 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
17278 the AML interpreter does NOT have support for the new 2.0 ASL
17279 grammar terms at this time.
17281 All ACPI hardware access is via the GAS structures in the ACPI 2.0
17284 All physical memory addresses across all platforms are now 64 bits
17285 wide. Logical address width remains dependent on the platform
17288 AcpiOsMapMemory interface changed to a 64-bit physical address.
17290 The AML interpreter integer size is now 64 bits, as per the ACPI
17293 For backwards compatibility with ACPI 1.0, ACPI tables with a
17294 revision number less than 2 use 32-bit integers only.
17296 Fixed a problem where the evaluation of OpRegion operands did not
17297 always resolve them to numbers properly.
17299 ------------------------------------------
17300 Summary of changes for this label: 10_20_00
17302 Fix for CBN_._STA issue. This fix will allow correct access to
17303 CBN_ OpRegions when the _STA returns 0x8.
17305 Support to convert ACPI constants (Ones, Zeros, One) to actual
17306 values before a package object is returned
17308 Fix for method call as predicate to if/while construct causing
17309 incorrect if/while behavior
17311 Fix for Else block package lengths sometimes calculated wrong (if
17314 Fix for Processor object length field, was always zero
17316 Table load abort if FACP sanity check fails
17318 Fix for problem with Scope(name) if name already exists
17320 Warning emitted if a named object referenced cannot be found
17321 (resolved) during method execution.
17327 ------------------------------------------
17328 Summary of changes for this label: 9_29_00
17330 New table initialization interfaces: AcpiInitializeSubsystem no
17331 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
17332 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
17333 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
17336 Note: These interface changes require changes to all existing OSDs
17338 The PCI_Config default address space handler is always installed
17339 at the root namespace object.
17341 -------------------------------------------
17342 Summary of changes for this label: 09_15_00
17344 The new initialization architecture is implemented. New
17345 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
17346 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
17348 (Namespace is automatically loaded when a table is loaded)
17350 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
17351 52 bytes to 32 bytes. There is usually one of these for every
17352 namespace object, so the memory savings is significant.
17354 Implemented just-in-time evaluation of the CreateField operators.
17356 Bug fixes for IA-64 support have been integrated.
17358 Additional code review comments have been implemented
17360 The so-called "third pass parse" has been replaced by a final walk
17361 through the namespace to initialize all operation regions (address
17362 spaces) and fields that have not yet been initialized during the
17363 execution of the various _INI and REG methods.
17365 New file - namespace/nsinit.c
17367 -------------------------------------------
17368 Summary of changes for this label: 09_01_00
17370 Namespace manager data structures have been reworked to change the
17371 primary object from a table to a single object. This has
17372 resulted in dynamic memory savings of 3X within the namespace and
17373 2X overall in the ACPI CA subsystem.
17375 Fixed problem where the call to AcpiEvFindPciRootBuses was
17376 inadvertently left commented out.
17378 Reduced the warning count when generating the source with the GCC
17381 Revision numbers added to each module header showing the
17382 SourceSafe version of the file. Please refer to this version
17383 number when giving us feedback or comments on individual modules.
17385 The main object types within the subsystem have been renamed to
17386 clarify their purpose:
17388 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
17389 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
17390 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
17392 NOTE: no changes to the initialization sequence are included in
17395 -------------------------------------------
17396 Summary of changes for this label: 08_23_00
17398 Fixed problem where TerminateControlMethod was being called
17399 multiple times per method
17401 Fixed debugger problem where single stepping caused a semaphore to
17404 Improved performance through additional parse object caching -
17405 added ACPI_EXTENDED_OP type
17407 -------------------------------------------
17408 Summary of changes for this label: 08_10_00
17410 Parser/Interpreter integration: Eliminated the creation of
17411 complete parse trees for ACPI tables and control methods.
17412 Instead, parse subtrees are created and then deleted as soon as
17413 they are processed (Either entered into the namespace or executed
17414 by the interpreter). This reduces the use of dynamic kernel
17415 memory significantly. (about 10X)
17417 Exception codes broken into classes and renumbered. Be sure to
17418 recompile all code that includes acexcep.h. Hopefully we won't
17419 have to renumber the codes again now that they are split into
17420 classes (environment, programmer, AML code, ACPI table, and
17423 Fixed some additional alignment issues in the Resource Manager
17426 Implemented semaphore tracking in the AcpiExec utility, and fixed
17427 several places where mutexes/semaphores were being unlocked
17428 without a corresponding lock operation. There are no known
17429 semaphore or mutex "leaks" at this time.
17431 Fixed the case where an ASL Return operator is used to return an
17434 -------------------------------------------
17435 Summary of changes for this label: 07_28_00
17437 Fixed a problem with the way addresses were calculated in
17438 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
17439 manifested itself when a Field was created with WordAccess or
17440 DwordAccess, but the field unit defined within the Field was less
17442 than a Word or Dword.
17444 Fixed a problem in AmlDumpOperands() module's loop to pull
17445 operands off of the operand stack to display information. The
17446 problem manifested itself as a TLB error on 64-bit systems when
17447 accessing an operand stack with two or more operands.
17449 Fixed a problem with the PCI configuration space handlers where
17450 context was getting confused between accesses. This required a
17451 change to the generic address space handler and address space
17452 setup definitions. Handlers now get both a global handler context
17453 (this is the one passed in by the user when executing
17454 AcpiInstallAddressSpaceHandler() and a specific region context
17455 that is unique to each region (For example, the _ADR, _SEG and
17456 _BBN values associated with a specific region). The generic
17457 function definitions have changed to the following:
17459 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
17460 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
17461 *HandlerContext, // This used to be void *Context void
17462 *RegionContext); // This is an additional parameter
17464 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
17465 RegionHandle, UINT32 Function, void *HandlerContext, void
17466 **RegionContext); // This used to be **ReturnContext
17468 -------------------------------------------
17469 Summary of changes for this label: 07_21_00
17471 Major file consolidation and rename. All files within the
17472 interpreter have been renamed as well as most header files. This
17473 was done to prevent collisions with existing files in the host
17474 OSs -- filenames such as "config.h" and "global.h" seem to be
17475 quite common. The VC project files have been updated. All
17476 makefiles will require modification.
17478 The parser/interpreter integration continues in Phase 5 with the
17479 implementation of a complete 2-pass parse (the AML is parsed
17480 twice) for each table; This avoids the construction of a huge
17481 parse tree and therefore reduces the amount of dynamic memory
17482 required by the subsystem. Greater use of the parse object cache
17483 means that performance is unaffected.
17485 Many comments from the two code reviews have been rolled in.
17487 The 64-bit alignment support is complete.
17489 -------------------------------------------
17490 Summary of changes for this label: 06_30_00
17492 With a nod and a tip of the hat to the technology of yesteryear,
17493 we've added support in the source code for 80 column output
17494 devices. The code is now mostly constrained to 80 columns or
17495 less to support environments and editors that 1) cannot display
17496 or print more than 80 characters on a single line, and 2) cannot
17497 disable line wrapping.
17499 A major restructuring of the namespace data structure has been
17500 completed. The result is 1) cleaner and more
17501 understandable/maintainable code, and 2) a significant reduction
17502 in the dynamic memory requirement for each named ACPI object
17505 -------------------------------------------
17506 Summary of changes for this label: 06_23_00
17508 Linux support has been added. In order to obtain approval to get
17509 the ACPI CA subsystem into the Linux kernel, we've had to make
17510 quite a few changes to the base subsystem that will affect all
17511 users (all the changes are generic and OS- independent). The
17512 effects of these global changes have been somewhat far reaching.
17513 Files have been merged and/or renamed and interfaces have been
17514 renamed. The major changes are described below.
17516 Osd* interfaces renamed to AcpiOs* to eliminate namespace
17517 pollution/confusion within our target kernels. All OSD
17518 interfaces must be modified to match the new naming convention.
17520 Files merged across the subsystem. A number of the smaller source
17521 and header files have been merged to reduce the file count and
17522 increase the density of the existing files. There are too many
17523 to list here. In general, makefiles that call out individual
17524 files will require rebuilding.
17526 Interpreter files renamed. All interpreter files now have the
17527 prefix am* instead of ie* and is*.
17529 Header files renamed: The acapi.h file is now acpixf.h. The
17530 acpiosd.h file is now acpiosxf.h. We are removing references to
17531 the acronym "API" since it is somewhat windowsy. The new name is
17532 "external interface" or xface or xf in the filenames.j
17535 All manifest constants have been forced to upper case (some were
17536 mixed case.) Also, the string "ACPI_" has been prepended to many
17537 (not all) of the constants, typedefs, and structs.
17539 The globals "DebugLevel" and "DebugLayer" have been renamed
17540 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
17542 All other globals within the subsystem are now prefixed with
17543 "AcpiGbl_" Internal procedures within the subsystem are now
17544 prefixed with "Acpi" (with only a few exceptions). The original
17545 two-letter abbreviation for the subcomponent remains after "Acpi"
17546 - for example, CmCallocate became AcpiCmCallocate.
17548 Added a source code translation/conversion utility. Used to
17549 generate the Linux source code, it can be modified to generate
17550 other types of source as well. Can also be used to cleanup
17551 existing source by removing extraneous spaces and blank lines.
17552 Found in tools/acpisrc/*
17554 OsdUnMapMemory was renamed to OsdUnmapMemory and then
17555 AcpiOsUnmapMemory. (UnMap became Unmap).
17557 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
17558 When set to one, this indicates that the caller wants to use the
17560 semaphore as a mutex, not a counting semaphore. ACPI CA uses
17561 both types. However, implementers of this call may want to use
17562 different OS primitives depending on the type of semaphore
17563 requested. For example, some operating systems provide separate
17565 "mutex" and "semaphore" interfaces - where the mutex interface is
17566 much faster because it doesn't have all the overhead of a full
17567 semaphore implementation.
17569 Fixed a deadlock problem where a method that accesses the PCI
17570 address space can block forever if it is the first access to the
17573 -------------------------------------------
17574 Summary of changes for this label: 06_02_00
17576 Support for environments that cannot handle unaligned data
17577 accesses (e.g. firmware and OS environments devoid of alignment
17578 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
17579 been added (via configurable macros) in these three areas: -
17580 Transfer of data from the raw AML byte stream is done via byte
17581 moves instead of word/dword/qword moves. - External objects are
17582 aligned within the user buffer, including package elements (sub-
17583 objects). - Conversion of name strings to UINT32 Acpi Names is now
17586 The Store operator was modified to mimic Microsoft's
17587 implementation when storing to a Buffer Field.
17589 Added a check of the BM_STS bit before entering C3.
17591 The methods subdirectory has been obsoleted and removed. A new
17592 file, cmeval.c subsumes the functionality.
17594 A 16-bit (DOS) version of AcpiExec has been developed. The
17595 makefile is under the acpiexec directory.