1 ----------------------------------------
2 18 December 2013. Summary of changes for version 20131218:
4 Global note: The ACPI 5.0A specification was released this month. There
5 are no changes needed for ACPICA since this release of ACPI is an
6 errata/clarification release. The specification is available at
10 1) ACPICA kernel-resident subsystem:
12 Added validation of the XSDT root table if it is present. Some older
13 platforms contain an XSDT that is ill-formed or otherwise invalid (such
14 as containing some or all entries that are NULL pointers). This change
15 adds a new function to validate the XSDT before actually using it. If the
16 XSDT is found to be invalid, ACPICA will now automatically fall back to
17 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
18 ACPICA and enhanced by Lv Zheng and Bob Moore.
20 Added a runtime option to ignore the XSDT and force the use of the RSDT.
21 This change adds a runtime option that will force ACPICA to use the RSDT
22 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
23 requires that an XSDT be used instead of the RSDT, the XSDT has been
24 found to be corrupt or ill-formed on some machines. Lv Zheng.
26 Added a runtime option to favor 32-bit FADT register addresses over the
27 64-bit addresses. This change adds an option to favor 32-bit FADT
28 addresses when there is a conflict between the 32-bit and 64-bit versions
29 of the same register. The default behavior is to use the 64-bit version
30 in accordance with the ACPI specification. This can now be overridden via
31 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
33 During the change above, the internal "Convert FADT" and "Verify FADT"
34 functions have been merged to simplify the code, making it easier to
35 understand and maintain. ACPICA BZ 933.
37 Improve exception reporting and handling for GPE block installation.
38 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
39 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
41 Added helper macros to extract bus/segment numbers from the HEST table.
42 This change adds two macros to extract the encoded bus and segment
43 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
44 Betty Dall <betty.dall@hp.com>
46 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
47 by ACPICA. It is not a public macro, so it should have no effect on
48 existing OSV code. Lv Zheng.
50 Example Code and Data Size: These are the sizes for the OS-independent
51 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
52 debug version of the code includes the debug output trace mechanism and
53 has a much larger code and data size.
56 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
57 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
59 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
60 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
63 2) iASL Compiler/Disassembler and Tools:
65 Disassembler: Improved pathname support for emitted External()
66 statements. This change adds full pathname support for external names
67 that have been resolved internally by the inclusion of additional ACPI
68 tables (via the iASL -e option). Without this change, the disassembler
69 can emit multiple externals for the same object, or it become confused
70 when the Scope() operator is used on an external object. Overall, greatly
71 improves the ability to actually recompile the emitted ASL code when
72 objects a referenced across multiple ACPI tables. Reported by Michael
73 Tsirkin (mst@redhat.com).
75 Tests/ASLTS: Updated functional control suite to execute with no errors.
76 David Box. Fixed several errors related to the testing of the interpreter
79 iASL: Added support to detect names that are declared within a control
80 method, but are unused (these are temporary names that are only valid
81 during the time the method is executing). A remark is issued for these
82 cases. ACPICA BZ 1022.
84 iASL: Added full support for the DBG2 table. Adds full disassembler,
85 table compiler, and template generator support for the DBG2 table (Debug
88 iASL: Added full support for the PCCT table, update the table definition.
89 Updates the PCCT table definition in the actbl3.h header and adds table
90 compiler and template generator support.
92 iASL: Added an option to emit only error messages (no warnings/remarks).
93 The -ve option will enable only error messages, warnings and remarks are
94 suppressed. This can simplify debugging when only the errors are
95 important, such as when an ACPI table is disassembled and there are many
96 warnings and remarks -- but only the actual errors are of real interest.
98 Example ACPICA code (source/tools/examples): Updated the example code so
99 that it builds to an actual working program, not just example code. Added
100 ACPI tables and execution of an example control method in the DSDT. Added
101 makefile support for Unix generation.
103 ----------------------------------------
104 15 November 2013. Summary of changes for version 20131115:
106 This release is available at https://acpica.org/downloads
109 1) ACPICA kernel-resident subsystem:
111 Resource Manager: Fixed loop termination for the "get AML length"
112 function. The loop previously had an error termination on a NULL resource
113 pointer, which can never happen since the loop simply increments a valid
114 resource pointer. This fix changes the loop to terminate with an error on
115 an invalid end-of-buffer condition. The problem can be seen as an
116 infinite loop by callers to AcpiSetCurrentResources with an invalid or
117 corrupted resource descriptor, or a resource descriptor that is missing
118 an END_TAG descriptor. Reported by Dan Carpenter
119 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
121 Table unload and ACPICA termination: Delete all attached data objects
122 during namespace node deletion. This fix updates namespace node deletion
123 to delete the entire list of attached objects (attached via
124 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
125 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
127 ACPICA termination: Added support to delete all objects attached to the
128 root namespace node. This fix deletes any and all objects that have been
129 attached to the root node via AcpiAttachData. Previously, none of these
130 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
132 Debug output: Do not emit the function nesting level for the in-kernel
133 build. The nesting level is really only useful during a single-thread
134 execution. Therefore, only enable this output for the AcpiExec utility.
135 Also, only emit the thread ID when executing under AcpiExec (Context
136 switches are still always detected and a message is emitted). ACPICA BZ
139 Example Code and Data Size: These are the sizes for the OS-independent
140 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
141 debug version of the code includes the debug output trace mechanism and
142 has a much larger code and data size.
145 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
146 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
148 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
149 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
152 2) iASL Compiler/Disassembler and Tools:
154 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
155 correct portable POSIX header for terminal control functions.
157 Disassembler: Fixed control method invocation issues related to the use
158 of the CondRefOf() operator. The problem is seen in the disassembly where
159 control method invocations may not be disassembled properly if the
160 control method name has been used previously as an argument to CondRefOf.
161 The solution is to not attempt to emit an external declaration for the
162 CondRefOf target (it is not necessary in the first place). This prevents
163 disassembler object type confusion. ACPICA BZ 988.
165 Unix Makefiles: Added an option to disable compiler optimizations and the
166 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
167 with optimizations (reportedly, gcc 4.4 for example). This change adds a
168 command line option for make (NOOPT) that disables all compiler
169 optimizations and the _FORTIFY_SOURCE compiler flag. The default
170 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
171 1034. Lv Zheng, Bob Moore.
173 Tests/ASLTS: Added options to specify individual test cases and modes.
174 This allows testers running aslts.sh to optionally specify individual
175 test modes and test cases. Also added an option to disable the forced
176 generation of the ACPICA tools from source if desired. Lv Zheng.
178 ----------------------------------------
179 27 September 2013. Summary of changes for version 20130927:
181 This release is available at https://acpica.org/downloads
184 1) ACPICA kernel-resident subsystem:
186 Fixed a problem with store operations to reference objects. This change
187 fixes a problem where a Store operation to an ArgX object that contained
189 reference to a field object did not complete the automatic dereference
191 then write to the actual field object. Instead, the object type of the
192 field object was inadvertently changed to match the type of the source
193 operand. The new behavior will actually write to the field object (buffer
194 field or field unit), thus matching the correct ACPI-defined behavior.
196 Implemented support to allow the host to redefine individual OSL
197 prototypes. This change enables the host to redefine OSL prototypes found
198 in the acpiosxf.h file. This allows the host to implement OSL interfaces
199 with a macro or inlined function. Further, it allows the host to add any
200 additional required modifiers such as __iomem, __init, __exit, etc., as
201 necessary on a per-interface basis. Enables maximum flexibility for the
202 OSL interfaces. Lv Zheng.
204 Hardcoded the access width for the FADT-defined reset register. The ACPI
205 specification requires the reset register width to be 8 bits. ACPICA now
206 hardcodes the width to 8 and ignores the FADT width value. This provides
207 compatibility with other ACPI implementations that have allowed BIOS code
208 with bad register width values to go unnoticed. Matthew Garett, Bob
212 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
214 in the OSL header (acpiosxf). The change modifies the position of this
215 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
216 build issues if the OSL defines the implementation of the interface to be
217 an inline stub function. Lv Zheng.
219 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
220 initialization interfaces. This change adds a new macro for the main init
221 and terminate external interfaces in order to support hosts that require
222 additional or different processing for these functions. Changed from
223 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
226 Cleaned up the memory allocation macros for configurability. In the
228 case, the ACPI_ALLOCATE and related macros now resolve directly to their
229 respective AcpiOs* OSL interfaces. Two options:
230 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
231 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
232 2) For AcpiExec (and for debugging), the macros can optionally be
234 to the local ACPICA interfaces that track each allocation (local tracking
235 is used to immediately detect memory leaks).
238 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
239 to predefine this macro to either TRUE or FALSE during the system build.
241 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
243 Example Code and Data Size: These are the sizes for the OS-independent
244 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
245 debug version of the code includes the debug output trace mechanism and
246 has a much larger code and data size.
249 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
250 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
252 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
253 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
256 2) iASL Compiler/Disassembler and Tools:
258 iASL: Implemented wildcard support for the -e option. This simplifies use
259 when there are many SSDTs that must be included to resolve external
261 declarations. ACPICA BZ 1041. Example:
262 iasl -e ssdt*.dat -d dsdt.dat
264 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
265 adds a portable module that implements full history and limited line
266 editing for Unix and Linux systems. It does not use readline() due to
267 portability issues. Instead it uses the POSIX termio interface to put the
268 terminal in raw input mode so that the various special keys can be
270 (such as up/down-arrow for history support and left/right-arrow for line
271 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
273 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
274 one or more spaces. This provides compatible with early or different
275 versions of the AcpiDump utility. ACPICA BZ 1044.
277 AcpiDump: Do not ignore tables that contain only an ACPI table header.
278 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
279 no other data. This change adds support to dump these tables. Any tables
280 shorter than the length of an ACPI table header remain in error (an error
281 message is emitted). Reported by Yi Li.
283 Debugger: Echo actual command along with the "unknown command" message.
285 ----------------------------------------
286 23 August 2013. Summary of changes for version 20130823:
288 1) ACPICA kernel-resident subsystem:
290 Implemented support for host-installed System Control Interrupt (SCI)
291 handlers. Certain ACPI functionality requires the host to handle raw
292 SCIs. For example, the "SCI Doorbell" that is defined for memory power
293 state support requires the host device driver to handle SCIs to examine
294 if the doorbell has been activated. Multiple SCI handlers can be
295 installed to allow for future expansion. New external interfaces are
296 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
297 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
299 Operation region support: Never locally free the handler "context"
300 pointer. This change removes some dangerous code that attempts to free
301 the handler context pointer in some (rare) circumstances. The owner of
302 the handler owns this pointer and the ACPICA code should never touch it.
303 Although not seen to be an issue in any kernel, it did show up as a
304 problem (fault) under AcpiExec. Also, set the internal storage field for
305 the context pointer to zero when the region is deactivated, simply for
306 sanity. David Box. ACPICA BZ 1039.
308 AcpiRead: On error, do not modify the return value target location. If an
309 error happens in the middle of a split 32/32 64-bit I/O operation, do not
310 modify the target of the return value pointer. Makes the code consistent
311 with the rest of ACPICA. Bjorn Helgaas.
313 Example Code and Data Size: These are the sizes for the OS-independent
314 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
315 debug version of the code includes the debug output trace mechanism and
316 has a much larger code and data size.
319 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
320 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
322 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
323 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
326 2) iASL Compiler/Disassembler and Tools:
328 AcpiDump: Implemented several new features and fixed some problems:
329 1) Added support to dump the RSDP, RSDT, and XSDT tables.
330 2) Added support for multiple table instances (SSDT, UEFI).
331 3) Added option to dump "customized" (overridden) tables (-c).
332 4) Fixed a problem where some table filenames were improperly
334 5) Improved some error messages, removed some unnecessary messages.
336 iASL: Implemented additional support for disassembly of ACPI tables that
337 contain invocations of external control methods. The -fe<file> option
338 allows the import of a file that specifies the external methods along
339 with the required number of arguments for each -- allowing for the
340 correct disassembly of the table. This is a workaround for a limitation
341 of AML code where the disassembler often cannot determine the number of
342 arguments required for an external control method and generates incorrect
343 ASL code. See the iASL reference for details. ACPICA BZ 1030.
345 Debugger: Implemented a new command (paths) that displays the full
346 pathnames (namepaths) and object types of all objects in the namespace.
347 This is an alternative to the namespace command.
349 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
350 mechanism and any installed handlers.
352 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
353 This can occur if there are too many parent prefixes in a namepath (for
354 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
356 Application OSLs: Set the return value for the PCI read functions. These
357 functions simply return AE_OK, but should set the return value to zero
358 also. This change implements this. ACPICA BZ 1038.
360 Debugger: Prevent possible command line buffer overflow. Increase the
361 size of a couple of the debugger line buffers, and ensure that overflow
362 cannot happen. ACPICA BZ 1037.
364 iASL: Changed to abort immediately on serious errors during the parsing
365 phase. Due to the nature of ASL, there is no point in attempting to
366 compile these types of errors, and they typically end up causing a
367 cascade of hundreds of errors which obscure the original problem.
369 ----------------------------------------
370 25 July 2013. Summary of changes for version 20130725:
372 1) ACPICA kernel-resident subsystem:
374 Fixed a problem with the DerefOf operator where references to FieldUnits
375 and BufferFields incorrectly returned the parent object, not the actual
376 value of the object. After this change, a dereference of a FieldUnit
377 reference results in a read operation on the field to get the value, and
378 likewise, the appropriate BufferField value is extracted from the target
381 Fixed a problem where the _WAK method could cause a fault under these
382 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
383 method returned no value. The problem is rarely seen because most kernels
384 run ACPICA in slack mode.
386 For the DerefOf operator, a fatal error now results if an attempt is made
387 to dereference a reference (created by the Index operator) to a NULL
388 package element. Provides compatibility with other ACPI implementations,
389 and this behavior will be added to a future version of the ACPI
392 The ACPI Power Management Timer (defined in the FADT) is now optional.
393 This provides compatibility with other ACPI implementations and will
394 appear in the next version of the ACPI specification. If there is no PM
395 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
396 zero in the FADT indicates no PM timer.
398 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
399 allows the host to globally enable/disable all vendor strings, all
400 feature strings, or both. Intended to be primarily used for debugging
401 purposes only. Lv Zheng.
403 Expose the collected _OSI data to the host via a global variable. This
404 data tracks the highest level vendor ID that has been invoked by the BIOS
405 so that the host (and potentially ACPICA itself) can change behaviors
406 based upon the age of the BIOS.
408 Example Code and Data Size: These are the sizes for the OS-independent
409 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
410 debug version of the code includes the debug output trace mechanism and
411 has a much larger code and data size.
414 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
415 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
417 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
418 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
421 2) iASL Compiler/Disassembler and Tools:
423 iASL: Created the following enhancements for the -so option (create
425 1)Add offsets for the last nameseg in each namepath for every supported
427 2)Add support for Processor, Device, Thermal Zone, and Scope objects
428 3)Add the actual AML opcode for the parent object of every supported
430 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
432 Disassembler: Emit all unresolved external symbols in a single block.
433 These are external references to control methods that could not be
434 resolved, and thus, the disassembler had to make a guess at the number of
437 iASL: The argument to the -T option (create table template) is now
438 optional. If not specified, the default table is a DSDT, typically the
441 ----------------------------------------
442 26 June 2013. Summary of changes for version 20130626:
444 1) ACPICA kernel-resident subsystem:
446 Fixed an issue with runtime repair of the _CST object. Null or invalid
447 elements were not always removed properly. Lv Zheng.
449 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
450 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
451 the maximum number of GPEs is 1016. Use of multiple GPE block devices
452 makes the system-wide number of GPEs essentially unlimited.
454 Example Code and Data Size: These are the sizes for the OS-independent
455 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
456 debug version of the code includes the debug output trace mechanism and
457 has a much larger code and data size.
460 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
461 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
463 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
464 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
467 2) iASL Compiler/Disassembler and Tools:
469 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
470 hosts. Now supports Linux, FreeBSD, and Windows.
472 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
473 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
475 iASL/Preprocessor: Implemented full support for nested
476 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
478 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
479 max. The original purpose of this constraint was to limit the amount of
480 debug output. However, the string function in question (UtPrintString) is
481 now used for the disassembler also, where 256 bytes is insufficient.
482 Reported by RehabMan@GitHub.
484 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
485 tables. ACPICA BZ 999. Lv Zheng.
487 iASL: Fixed a couple of error exit issues that could result in a "Could
488 not delete <file>" message during ASL compilation.
490 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
491 the actual signatures for these tables are "FACP" and "APIC",
494 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
495 tables are allowed to have multiple instances.
497 ----------------------------------------
498 17 May 2013. Summary of changes for version 20130517:
500 1) ACPICA kernel-resident subsystem:
502 Fixed a regression introduced in version 20130328 for _INI methods. This
503 change fixes a problem introduced in 20130328 where _INI methods are no
504 longer executed properly because of a memory block that was not
505 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
506 <tomasz.nowicki@linaro.org>.
508 Fixed a possible problem with the new extended sleep registers in the
510 5.0 FADT. Do not use these registers (even if populated) unless the HW-
511 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
514 Implemented return value repair code for _CST predefined objects: Sort
516 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
518 Implemented a debug-only option to disable loading of SSDTs from the
519 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
520 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
521 acglobal.h - ACPICA BZ 1005. Lv Zheng.
523 Fixed some issues in the ACPICA initialization and termination code:
524 Tomasz Nowicki <tomasz.nowicki@linaro.org>
525 1) Clear events initialized flag upon event component termination. ACPICA
527 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
528 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
529 4) Clear debug buffer global on termination to prevent possible multiple
530 delete. ACPICA BZ 1010.
532 Standardized all switch() blocks across the entire source base. After
534 years, different formatting for switch() had crept in. This change makes
535 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
537 Split some files to enhance ACPICA modularity and configurability:
538 1) Split buffer dump routines into utilities/utbuffer.c
539 2) Split internal error message routines into utilities/uterror.c
540 3) Split table print utilities into tables/tbprint.c
541 4) Split iASL command-line option processing into asloptions.c
543 Makefile enhancements:
544 1) Support for all new files above.
545 2) Abort make on errors from any subcomponent. Chao Guan.
546 3) Add build support for Apple Mac OS X. Liang Qi.
548 Example Code and Data Size: These are the sizes for the OS-independent
549 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
550 debug version of the code includes the debug output trace mechanism and
551 has a much larger code and data size.
554 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
555 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
557 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
558 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
561 2) iASL Compiler/Disassembler and Tools:
563 New utility: Implemented an easily portable version of the acpidump
564 utility to extract ACPI tables from the system (or a file) in an ASCII
566 dump format. The top-level code implements the various command line
567 options, file I/O, and table dump routines. To port to a new host, only
568 three functions need to be implemented to get tables -- since this
569 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
570 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
571 1) The Windows version obtains the ACPI tables from the Registry.
572 2) The Linux version is under development.
573 3) Other hosts - If an OS-dependent module is submitted, it will be
574 distributed with ACPICA.
576 iASL: Fixed a regression for -D preprocessor option (define symbol). A
577 restructuring/change to the initialization sequence caused this option to
578 no longer work properly.
580 iASL: Implemented a mechanism to disable specific warnings and remarks.
581 Adds a new command line option, "-vw <messageid> as well as "#pragma
582 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
584 iASL: Fix for too-strict package object validation. The package object
585 validation for return values from the predefined names is a bit too
586 strict, it does not allow names references within the package (which will
587 be resolved at runtime.) These types of references cannot be validated at
588 compile time. This change ignores named references within package objects
589 for names that return or define static packages.
591 Debugger: Fixed the 80-character command line limitation for the History
592 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
594 iASL: Added control method and package support for the -so option
595 (generates AML offset table for BIOS support.)
597 iASL: issue a remark if a non-serialized method creates named objects. If
598 a thread blocks within the method for any reason, and another thread
599 enters the method, the method will fail because an attempt will be made
601 create the same (named) object twice. In this case, issue a remark that
602 the method should be marked serialized. NOTE: may become a warning later.
605 ----------------------------------------
606 18 April 2013. Summary of changes for version 20130418:
608 1) ACPICA kernel-resident subsystem:
610 Fixed a possible buffer overrun during some rare but specific field unit
611 read operations. This overrun can only happen if the DSDT version is 1 --
612 meaning that all AML integers are 32 bits -- and the field length is
613 between 33 and 55 bits long. During the read, an internal buffer object
615 created for the field unit because the field is larger than an integer
617 bits). However, in this case, the buffer will be incorrectly written
618 beyond the end because the buffer length is less than the internal
620 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
621 long, but a full 8 bytes will be written.
623 Updated the Embedded Controller "orphan" _REG method support. This refers
624 to _REG methods under the EC device that have no corresponding operation
625 region. This is allowed by the ACPI specification. This update removes a
626 dependency on the existence an ECDT table. It will execute an orphan _REG
627 method as long as the operation region handler for the EC is installed at
628 the EC device node and not the namespace root. Rui Zhang (original
629 update), Bob Moore (update/integrate).
631 Implemented run-time argument typechecking for all predefined ACPI names
632 (_STA, _BIF, etc.) This change performs object typechecking on all
633 incoming arguments for all predefined names executed via
634 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
635 passing correct object types as well as the correct number of arguments
636 (therefore identifying any issues immediately). Also, the ASL/namespace
637 definition of the predefined name is checked against the ACPI
638 specification for the proper argument count. Adds one new file,
641 Changed an exception code for the ASL UnLoad() operator. Changed the
642 exception code for the case where the input DdbHandle is invalid, from
643 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
645 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
646 global makefile. The use of this flag causes compiler errors on earlier
647 versions of GCC, so it has been removed for compatibility.
649 Miscellaneous cleanup:
650 1) Removed some unused/obsolete macros
651 2) Fixed a possible memory leak in the _OSI support
652 3) Removed an unused variable in the predefined name support
653 4) Windows OSL: remove obsolete reference to a memory list field
655 Example Code and Data Size: These are the sizes for the OS-independent
656 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
657 debug version of the code includes the debug output trace mechanism and
658 has a much larger code and data size.
661 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
662 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
664 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
665 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
668 2) iASL Compiler/Disassembler and Tools:
670 AcpiExec: Added installation of a handler for the SystemCMOS address
671 space. This prevents control method abort if a method accesses this
674 AcpiExec: Added support for multiple EC devices, and now install EC
675 operation region handler(s) at the actual EC device instead of the
676 namespace root. This reflects the typical behavior of host operating
679 AcpiExec: Updated to ensure that all operation region handlers are
680 installed before the _REG methods are executed. This prevents a _REG
681 method from aborting if it accesses an address space has no handler.
682 AcpiExec installs a handler for every possible address space.
684 Debugger: Enhanced the "handlers" command to display non-root handlers.
685 This change enhances the handlers command to display handlers associated
686 with individual devices throughout the namespace, in addition to the
687 currently supported display of handlers associated with the root
691 ASL Test Suite: Several test suite errors have been identified and
692 resolved, reducing the total error count during execution. Chao Guan.
694 ----------------------------------------
695 28 March 2013. Summary of changes for version 20130328:
697 1) ACPICA kernel-resident subsystem:
699 Fixed several possible race conditions with the internal object reference
700 counting mechanism. Some of the external ACPICA interfaces update object
701 reference counts without holding the interpreter or namespace lock. This
702 change adds a spinlock to protect reference count updates on the internal
703 ACPICA objects. Reported by and with assistance from Andriy Gapon
706 FADT support: Removed an extraneous warning for very large GPE register
707 sets. This change removes a size mismatch warning if the legacy length
708 field for a GPE register set is larger than the 64-bit GAS structure can
709 accommodate. GPE register sets can be larger than the 255-bit width
710 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
712 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
713 return from this interface. Handles a possible timeout case if
714 ACPI_WAIT_FOREVER is modified by the host to be a value less than
715 "forever". Jung-uk Kim.
717 Predefined name support: Add allowed/required argument type information
719 the master predefined info table. This change adds the infrastructure to
720 enable typechecking on incoming arguments for all predefined
721 methods/objects. It does not actually contain the code that will fully
722 utilize this information, this is still under development. Also condenses
723 some duplicate code for the predefined names into a new module,
726 Example Code and Data Size: These are the sizes for the OS-independent
727 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
728 debug version of the code includes the debug output trace mechanism and
729 has a much larger code and data size.
732 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
733 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
735 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
736 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
739 2) iASL Compiler/Disassembler and Tools:
741 iASL: Implemented a new option to simplify the development of ACPI-
743 BIOS code. Adds support for a new "offset table" output file. The -so
744 option will create a C table containing the AML table offsets of various
745 named objects in the namespace so that BIOS code can modify them easily
747 boot time. This can simplify BIOS runtime code by eliminating expensive
748 searches for "magic values", enhancing boot times and adding greater
749 reliability. With assistance from Lee Hamel.
751 iASL: Allow additional predefined names to return zero-length packages.
752 Now, all predefined names that are defined by the ACPI specification to
753 return a "variable-length package of packages" are allowed to return a
754 zero length top-level package. This allows the BIOS to tell the host that
755 the requested feature is not supported, and supports existing BIOS/ASL
758 iASL: Changed the "result not used" warning to an error. This is the case
759 where an ASL operator is effectively a NOOP because the result of the
760 operation is not stored anywhere. For example:
762 There is no target (missing 3rd argument), nor is the function return
763 value used. This is potentially a very serious problem -- since the code
764 was probably intended to do something, but for whatever reason, the value
765 was not stored. Therefore, this issue has been upgraded from a warning to
768 AcpiHelp: Added allowable/required argument types to the predefined names
769 info display. This feature utilizes the recent update to the predefined
772 ----------------------------------------
773 14 February 2013. Summary of changes for version 20130214:
775 1) ACPICA Kernel-resident Subsystem:
777 Fixed a possible regression on some hosts: Reinstated the safe return
778 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
779 evaluated only once. Although these macros are not needed for the ACPICA
780 code itself, they are often used by ACPI-related host device drivers
782 the safe feature may be necessary.
784 Fixed several issues related to the ACPI 5.0 reduced hardware support
785 (SOC): Now ensure that if the platform declares itself as hardware-
787 via the FADT, the following functions become NOOPs (and always return
788 AE_OK) because ACPI is always enabled by definition on these machines:
794 Dynamic Object Repair: Implemented additional runtime repairs for
795 predefined name return values. Both of these repairs can simplify code in
796 the related device drivers that invoke these methods:
797 1) For the _STR and _MLS names, automatically repair/convert an ASCII
798 string to a Unicode buffer.
799 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
801 lone end tag descriptor in the following cases: A Return(0) was executed,
802 a null buffer was returned, or no object at all was returned (non-slack
803 mode only). Adds a new file, nsconvert.c
804 ACPICA BZ 998. Bob Moore, Lv Zheng.
806 Resource Manager: Added additional code to prevent possible infinite
808 while traversing corrupted or ill-formed resource template buffers. Check
809 for zero-length resource descriptors in all code that loops through
810 resource templates (the length field is used to index through the
811 template). This change also hardens the external AcpiWalkResources and
812 AcpiWalkResourceBuffer interfaces.
814 Local Cache Manager: Enhanced the main data structure to eliminate an
815 unnecessary mechanism to access the next object in the list. Actually
816 provides a small performance enhancement for hosts that use the local
817 ACPICA cache manager. Jung-uk Kim.
819 Example Code and Data Size: These are the sizes for the OS-independent
820 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
821 debug version of the code includes the debug output trace mechanism and
822 has a much larger code and data size.
825 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
826 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
828 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
829 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
832 2) iASL Compiler/Disassembler and Tools:
834 iASL/Disassembler: Fixed several issues with the definition of the ACPI
835 5.0 RASF table (RAS Feature Table). This change incorporates late changes
836 that were made to the ACPI 5.0 specification.
838 iASL/Disassembler: Added full support for the following new ACPI tables:
839 1) The MTMR table (MID Timer Table)
840 2) The VRTC table (Virtual Real Time Clock Table).
841 Includes header file, disassembler, table compiler, and template support
844 iASL: Implemented compile-time validation of package objects returned by
845 predefined names. This new feature validates static package objects
846 returned by the various predefined names defined to return packages. Both
847 object types and package lengths are validated, for both parent packages
848 and sub-packages, if any. The code is similar in structure and behavior
850 the runtime repair mechanism within the AML interpreter and uses the
851 existing predefined name information table. Adds a new file, aslprepkg.c.
854 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
855 This feature detects a binary file with a valid ACPI table header and
856 invokes the disassembler automatically. Eliminates the need to
857 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
859 iASL/Disassembler: Added several warnings for the case where there are
860 unresolved control methods during the disassembly. This can potentially
861 cause errors when the output file is compiled, because the disassembler
862 assumes zero method arguments in these cases (it cannot determine the
863 actual number of arguments without resolution/definition of the method).
865 Debugger: Added support to display all resources with a single command.
866 Invocation of the resources command with no arguments will now display
868 resources within the current namespace.
870 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
873 ----------------------------------------
874 17 January 2013. Summary of changes for version 20130117:
876 1) ACPICA Kernel-resident Subsystem:
878 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
879 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
880 objects to return a package containing one integer, most BIOS code
882 two integers and the previous code reflects that. However, we also need
884 support BIOS code that actually implements to the ACPI spec, and this
885 change reflects this.
887 Fixed two issues with the ACPI_DEBUG_PRINT macros:
888 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
889 C compilers that require this support.
890 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
891 ACPI_DEBUG is already used by many of the various hosts.
893 Updated all ACPICA copyrights and signons to 2013. Added the 2013
894 copyright to all module headers and signons, including the standard Linux
895 header. This affects virtually every file in the ACPICA core subsystem,
896 iASL compiler, all ACPICA utilities, and the test suites.
898 Example Code and Data Size: These are the sizes for the OS-independent
899 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
900 debug version of the code includes the debug output trace mechanism and
901 has a much larger code and data size.
904 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
905 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
907 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
908 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
911 2) iASL Compiler/Disassembler and Tools:
913 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
914 prevent a possible fault on some hosts. Some C libraries modify the arg
915 pointer parameter to vfprintf making it difficult to call it twice in the
916 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
917 does not affect the Windows OSL since the Win C library does not modify
918 the arg pointer. Chao Guan, Bob Moore.
920 iASL: Fixed a possible infinite loop when the maximum error count is
921 reached. If an output file other than the .AML file is specified (such as
922 a listing file), and the maximum number of errors is reached, do not
923 attempt to flush data to the output file(s) as the compiler is aborting.
924 This can cause an infinite loop as the max error count code essentially
925 keeps calling itself.
927 iASL/Disassembler: Added an option (-in) to ignore NOOP
929 Implemented for both the compiler and the disassembler. Often, the NOOP
930 opcode is used as padding for packages that are changed dynamically by
932 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
933 errors. This option causes the disassembler to ignore all NOOP opcodes
934 (0xA3), and it also causes the compiler to ignore all ASL source code
938 Debugger: Enhanced the Sleep command to execute all sleep states. This
939 change allows Sleep to be invoked with no arguments and causes the
940 debugger to execute all of the sleep states, 0-5, automatically.
942 ----------------------------------------
943 20 December 2012. Summary of changes for version 20121220:
945 1) ACPICA Kernel-resident Subsystem:
947 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
948 alternate entry point for AcpiWalkResources and improves the usability of
949 the resource manager by accepting as input a buffer containing the output
950 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
951 input buffer is not deleted by this interface so that it can be used by
952 the host later. See the ACPICA reference for details.
954 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
955 (DSDT version < 2). The constant will be truncated and this warning
956 reflects that behavior.
958 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
959 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
960 both get and set the new wake bit in these descriptors, separately from
961 the existing share bit. Reported by Aaron Lu.
963 Interpreter: Fix Store() when an implicit conversion is not possible. For
964 example, in the cases such as a store of a string to an existing package
965 object, implement the store as a CopyObject(). This is a small departure
966 from the ACPI specification which states that the control method should
968 aborted in this case. However, the ASLTS suite depends on this behavior.
970 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
971 macros: check if debug output is currently enabled as soon as possible to
972 minimize performance impact if debug is in fact not enabled.
974 Source code restructuring: Cleanup to improve modularity. The following
975 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
976 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
977 Associated makefiles and project files have been updated.
979 Changed an exception code for LoadTable operator. For the case where one
980 of the input strings is too long, change the returned exception code from
981 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
983 Fixed a possible memory leak in dispatcher error path. On error, delete
984 the mutex object created during method mutex creation. Reported by
985 tim.gardner@canonical.com.
987 Example Code and Data Size: These are the sizes for the OS-independent
988 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
989 debug version of the code includes the debug output trace mechanism and
990 has a much larger code and data size.
993 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
994 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
996 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
997 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1000 2) iASL Compiler/Disassembler and Tools:
1002 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1003 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1004 will not allow the interpreter to differentiate between a method and a
1005 method invocation when these are used as an argument to the ObjectType
1006 operator. The ACPI specification change is to disallow a method
1008 (UserTerm) for the ObjectType operator.
1010 Finish support for the TPM2 and CSRT tables in the headers, table
1011 compiler, and disassembler.
1013 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1014 always expires immediately if the semaphore is not available. The
1016 code was using a relative-time timeout, but sem_timedwait requires the
1018 of an absolute time.
1020 iASL: Added a remark if the Timer() operator is used within a 32-bit
1021 table. This operator returns a 64-bit time value that will be truncated
1022 within a 32-bit table.
1024 iASL Source code restructuring: Cleanup to improve modularity. The
1025 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1026 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1030 ----------------------------------------
1031 14 November 2012. Summary of changes for version 20121114:
1033 1) ACPICA Kernel-resident Subsystem:
1035 Implemented a performance enhancement for ACPI/AML Package objects. This
1036 change greatly increases the performance of Package objects within the
1037 interpreter. It changes the processing of reference counts for packages
1039 optimizing for the most common case where the package sub-objects are
1040 either Integers, Strings, or Buffers. Increases the overall performance
1042 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1044 Chao Guan. ACPICA BZ 943.
1046 Implemented and deployed common macros to extract flag bits from resource
1047 descriptors. Improves readability and maintainability of the code. Fixes
1049 problem with the UART serial bus descriptor for the number of data bits
1050 flags (was incorrectly 2 bits, should be 3).
1052 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1053 of the macros and changed the SETx macros to the style of (destination,
1054 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1056 Example Code and Data Size: These are the sizes for the OS-independent
1057 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1058 debug version of the code includes the debug output trace mechanism and
1059 has a much larger code and data size.
1062 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1063 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1065 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1066 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1069 2) iASL Compiler/Disassembler and Tools:
1071 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1072 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1073 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1075 Disassembler: Fixed a problem with external declaration generation. Fixes
1076 a problem where an incorrect pathname could be generated for an external
1077 declaration if the original reference to the object includes leading
1078 carats (^). ACPICA BZ 984.
1080 Debugger: Completed a major update for the Disassemble<method> command.
1081 This command was out-of-date and did not properly disassemble control
1082 methods that had any reasonable complexity. This fix brings the command
1084 to the same level as the rest of the disassembler. Adds one new file,
1085 dmdeferred.c, which is existing code that is now common with the main
1086 disassembler and the debugger disassemble command. ACPICA MZ 978.
1088 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1089 Newer versions of Bison emit this prototype, so moved the prototype out
1091 the iASL header to where it is actually used in order to avoid a
1095 iASL/Tools: Standardized use of the stream I/O functions:
1096 1) Ensure check for I/O error after every fopen/fread/fwrite
1097 2) Ensure proper order of size/count arguments for fread/fwrite
1098 3) Use test of (Actual != Requested) after all fwrite, and most fread
1099 4) Standardize I/O error messages
1100 Improves reliability and maintainability of the code. Bob Moore, Lv
1104 Disassembler: Prevent duplicate External() statements. During generation
1105 of external statements, detect similar pathnames that are actually
1106 duplicates such as these:
1109 Remove all leading '\' characters from pathnames during the external
1110 statement generation so that duplicates will be detected and tossed.
1113 Tools: Replace low-level I/O with stream I/O functions. Replace
1114 open/read/write/close with the stream I/O equivalents
1115 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1118 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1119 name header so that AcpiXtract recognizes the output file/table.
1121 iASL: Remove obsolete -2 option flag. Originally intended to force the
1122 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1123 and the entire concept is now obsolete.
1125 ----------------------------------------
1126 18 October 2012. Summary of changes for version 20121018:
1129 1) ACPICA Kernel-resident Subsystem:
1131 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1132 introduced by late changes to the table as it was added to the ACPI 5.0
1133 specification. Includes header, disassembler, and data table compiler
1134 support as well as a new version of the MPST template.
1136 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1137 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1138 methods: _HID, _CID, and _UID.
1140 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1141 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1142 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1143 names for their various drivers. Affects the AcpiGetObjectInfo external
1144 interface, and other internal interfaces as well.
1146 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1147 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
1148 on machines that support non-aligned transfers. Optimizes for this case
1149 rather than using a strncpy. With assistance from Zheng Lv.
1151 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
1152 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
1154 Added a new debug print message for AML mutex objects that are force-
1155 released. At control method termination, any currently acquired mutex
1156 objects are force-released. Adds a new debug-only message for each one
1159 Audited/updated all ACPICA return macros and the function debug depth
1160 counter: 1) Ensure that all functions that use the various TRACE macros
1161 also use the appropriate ACPICA return macros. 2) Ensure that all normal
1162 return statements surround the return expression (value) with parens to
1163 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
1164 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
1166 Global source code changes/maintenance: All extra lines at the start and
1167 end of each source file have been removed for consistency. Also, within
1168 comments, all new sentences start with a single space instead of a double
1169 space, again for consistency across the code base.
1171 Example Code and Data Size: These are the sizes for the OS-independent
1172 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1173 debug version of the code includes the debug output trace mechanism and
1174 has a much larger code and data size.
1177 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1178 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1180 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1181 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1184 2) iASL Compiler/Disassembler and Tools:
1186 AcpiExec: Improved the algorithm used for memory leak/corruption
1187 detection. Added some intelligence to the code that maintains the global
1188 list of allocated memory. The list is now ordered by allocated memory
1189 address, significantly improving performance. When running AcpiExec on
1190 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
1191 on the platform and/or the environment. Note, this performance
1192 enhancement affects the AcpiExec utility only, not the kernel-resident
1195 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
1196 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
1197 incorrect table offset reported for invalid opcodes. Report the original
1198 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
1200 Disassembler: Enhanced the -vt option to emit the binary table data in
1201 hex format to assist with debugging.
1203 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
1204 size of file structure. Colin Ian King.
1206 ----------------------------------------
1207 13 September 2012. Summary of changes for version 20120913:
1210 1) ACPICA Kernel-resident Subsystem:
1212 ACPI 5.0: Added two new notify types for the Hardware Error Notification
1213 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
1217 Table Manager: Merged/removed duplicate code in the root table resize
1218 functions. One function is external, the other is internal. Lv Zheng,
1222 Makefiles: Completely removed the obsolete "Linux" makefiles under
1223 acpica/generate/linux. These makefiles are obsolete and have been
1226 the generic unix makefiles under acpica/generate/unix.
1228 Makefiles: Ensure that binary files always copied properly. Minor rule
1230 to ensure that the final binary output files are always copied up to the
1231 appropriate binary directory (bin32 or bin64.)
1233 Example Code and Data Size: These are the sizes for the OS-independent
1234 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1236 version of the code includes the debug output trace mechanism and has a
1238 larger code and data size.
1241 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1242 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1244 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1245 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1248 2) iASL Compiler/Disassembler and Tools:
1250 Disassembler: Fixed a possible fault during the disassembly of resource
1251 descriptors when a second parse is required because of the invocation of
1252 external control methods within the table. With assistance from
1253 adq@lidskialf.net. ACPICA BZ 976.
1255 iASL: Fixed a namepath optimization problem. An error can occur if the
1257 node that contains the namepath to be optimized does not have a parent
1259 that is a named object. This change fixes the problem.
1261 iASL: Fixed a regression where the AML file is not deleted on errors. The
1263 output file should be deleted if there are any errors during the
1266 only exception is if the -f (force output) option is used. ACPICA BZ 974.
1268 iASL: Added a feature to automatically increase internal line buffer
1270 Via realloc(), automatically increase the internal line buffer sizes as
1271 necessary to support very long source code lines. The current version of
1273 preprocessor requires a buffer long enough to contain full source code
1275 This change increases the line buffer(s) if the input lines go beyond the
1276 current buffer size. This eliminates errors that occurred when a source
1278 line was longer than the buffer.
1280 iASL: Fixed a problem with constant folding in method declarations. The
1281 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
1283 Type3 opcode was used.
1285 Debugger: Improved command help support. For incorrect argument count,
1287 full help for the command. For help command itself, allow an argument to
1290 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
1291 errors during execution of the suite. Guan Chao.
1293 ----------------------------------------
1294 16 August 2012. Summary of changes for version 20120816:
1297 1) ACPICA Kernel-resident Subsystem:
1299 Removed all use of the deprecated _GTS and _BFS predefined methods. The
1301 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
1302 deprecated and will probably be removed from the ACPI specification.
1304 does not invoke them, and reportedly never will. The final nail in the
1306 is that the ACPI specification states that these methods must be run with
1307 interrupts off, which is not going to happen in a kernel interpreter.
1309 Linux has removed all use of the methods also. It was discovered that
1310 invoking these functions caused failures on some machines, probably
1312 they were never tested since Windows does not call them. Affects two
1314 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
1317 Implemented support for complex bit-packed buffers returned from the _PLD
1318 (Physical Location of Device) predefined method. Adds a new external
1319 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
1321 structure. Note: C Bitfields cannot be used for this type of predefined
1322 structure since the memory layout of individual bitfields is not defined
1324 the C language. In addition, there are endian concerns where a compiler
1326 change the bitfield ordering based on the machine type. The new ACPICA
1327 interface eliminates these issues, and should be called after _PLD is
1328 executed. ACPICA BZ 954.
1330 Implemented a change to allow a scope change to root (via "Scope (\)")
1332 execution of module-level ASL code (code that is executed at table load
1335 Added the Windows8/Server2012 string for the _OSI method. This change
1338 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
1341 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
1343 and CSRT (Core System Resource Table).
1345 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
1346 names. This simplifies access to the buffers returned by these predefined
1347 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
1349 GPE support: Removed an extraneous parameter from the various low-level
1350 internal GPE functions. Tang Feng.
1352 Removed the linux makefiles from the unix packages. The generate/linux
1353 makefiles are obsolete and have been removed from the unix tarball
1355 packages. The replacement makefiles are under generate/unix, and there is
1357 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
1359 Updates for Unix makefiles:
1360 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
1361 2) Update linker flags (move to end of command line) for AcpiExec
1365 Split ACPICA initialization functions to new file, utxfinit.c. Split from
1366 utxface.c to improve modularity and reduce file size.
1368 Example Code and Data Size: These are the sizes for the OS-independent
1369 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1370 debug version of the code includes the debug output trace mechanism and
1372 much larger code and data size.
1375 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1376 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1378 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1379 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1382 2) iASL Compiler/Disassembler and Tools:
1384 iASL: Fixed a problem with constant folding for fixed-length constant
1385 expressions. The constant-folding code was not being invoked for constant
1386 expressions that allow the use of type 3/4/5 opcodes to generate
1388 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
1390 in the generation of invalid AML bytecode. ACPICA BZ 970.
1392 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
1393 apparently automatically emit some of the necessary externals. This
1395 handles these versions in order to eliminate generation warnings.
1397 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
1399 Disassembler: Add support to decode _PLD buffers. The decoded buffer
1401 within comments in the output file.
1403 Debugger: Fixed a regression with the "Threads" command where
1404 AE_BAD_PARAMETER was always returned.
1406 ----------------------------------------
1407 11 July 2012. Summary of changes for version 20120711:
1409 1) ACPICA Kernel-resident Subsystem:
1411 Fixed a possible fault in the return package object repair code. Fixes a
1412 problem that can occur when a lone package object is wrapped with an
1414 package object in order to force conformance to the ACPI specification.
1416 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
1420 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
1421 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
1422 ARB_DIS bit must be implemented in the host-dependent C3 processor power
1424 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
1426 Intel and other vendors. (for Intel: ICH4-M and earlier)
1428 This change removes the code to disable/enable bus master arbitration
1430 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
1432 resume problems on some machines. The change has been in use for over
1436 Implemented two new external interfaces to support host-directed dynamic
1438 table load and unload. They are intended to simplify the host
1440 of hot-plug support:
1441 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
1442 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
1444 See the ACPICA reference for additional details. Adds one new file,
1445 components/tables/tbxfload.c
1447 Implemented and deployed two new interfaces for errors and warnings that
1449 known to be caused by BIOS/firmware issues:
1450 AcpiBiosError: Prints "ACPI Firmware Error" message.
1451 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
1452 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
1454 and FADT errors. Additional deployment to be completed as appropriate in
1456 future. The associated conditional macros are ACPI_BIOS_ERROR and
1457 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
1462 Implicit notify support: ensure that no memory allocation occurs within a
1463 critical region. This fix moves a memory allocation outside of the time
1465 spinlock is held. Fixes issues on systems that do not allow this
1469 Split exception code utilities and tables into a new file,
1472 Example Code and Data Size: These are the sizes for the OS-independent
1473 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1475 version of the code includes the debug output trace mechanism and has a
1477 larger code and data size.
1480 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1481 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1483 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1484 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1487 2) iASL Compiler/Disassembler and Tools:
1489 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
1493 Debugger: Enhanced the "tables" command to emit additional information
1495 the current set of ACPI tables, including the owner ID and flags decode.
1497 Debugger: Reimplemented the "unload" command to use the new
1498 AcpiUnloadParentTable external interface. This command was disable
1500 due to need for an unload interface.
1502 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
1504 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
1506 ----------------------------------------
1507 20 June 2012. Summary of changes for version 20120620:
1510 1) ACPICA Kernel-resident Subsystem:
1512 Implemented support to expand the "implicit notify" feature to allow
1514 devices to be notified by a single GPE. This feature automatically
1516 runtime device notification in the absence of a BIOS-provided GPE control
1517 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
1519 provided by ACPICA for Windows compatibility, and is a workaround for
1522 code errors. See the description of the AcpiSetupGpeForWake interface in
1524 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
1526 Changed some comments and internal function names to simplify and ensure
1527 correctness of the Linux code translation. No functional changes.
1529 Example Code and Data Size: These are the sizes for the OS-independent
1530 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1532 version of the code includes the debug output trace mechanism and has a
1534 larger code and data size.
1537 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1538 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1540 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1541 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1544 2) iASL Compiler/Disassembler and Tools:
1546 Disassembler: Added support to emit short, commented descriptions for the
1548 predefined names in order to improve the readability of the disassembled
1549 output. ACPICA BZ 959. Changes include:
1550 1) Emit descriptions for all standard predefined names (_INI, _STA,
1553 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
1554 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
1557 AcpiSrc: Fixed several long-standing Linux code translation issues.
1559 descriptions in function headers are now translated properly to lower
1562 underscores. ACPICA BZ 961. Also fixes translation problems such as
1568 local_fADT -> local_FADT
1569 execute_oSI -> execute_OSI
1571 iASL: Fixed a problem where null bytes were inadvertently emitted into
1575 iASL: Added the existing debug options to the standard help screen. There
1577 no longer two different help screens. ACPICA BZ 957.
1579 AcpiHelp: Fixed some typos in the various predefined name descriptions.
1581 expand some of the descriptions where appropriate.
1583 iASL: Fixed the -ot option (display compile times/statistics). Was not
1585 properly for standard output; only worked for the debug file case.
1587 ----------------------------------------
1588 18 May 2012. Summary of changes for version 20120518:
1591 1) ACPICA Core Subsystem:
1593 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
1595 to block until asynchronous events such as notifies and GPEs have
1597 Within ACPICA, it is only called before a notify or GPE handler is
1598 removed/uninstalled. It also may be useful for the host OS within related
1599 drivers such as the Embedded Controller driver. See the ACPICA reference
1601 additional information. ACPICA BZ 868.
1603 ACPI Tables: Added a new error message for a possible overflow failure
1605 the conversion of FADT 32-bit legacy register addresses to internal
1608 bit GAS structure representation. The GAS has a one-byte "bit length"
1610 thus limiting the register length to 255 bits. ACPICA BZ 953.
1612 Example Code and Data Size: These are the sizes for the OS-independent
1613 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1615 version of the code includes the debug output trace mechanism and has a
1617 larger code and data size.
1620 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1621 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1623 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1624 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1627 2) iASL Compiler/Disassembler and Tools:
1629 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
1631 This keyword was added late in the ACPI 5.0 release cycle and was not
1632 implemented until now.
1634 Disassembler: Added support for Operation Region externals. Adds missing
1635 support for operation regions that are defined in another table, and
1636 referenced locally via a Field or BankField ASL operator. Now generates
1638 correct External statement.
1640 Disassembler: Several additional fixes for the External() statement
1642 related to some ASL operators. Also, order the External() statements
1643 alphabetically in the disassembler output. Fixes the External()
1646 the Create* field, Alias, and Scope operators:
1647 1) Create* buffer field operators - fix type mismatch warning on
1649 2) Alias - implement missing External support
1650 3) Scope - fix to make sure all necessary externals are emitted.
1652 iASL: Improved pathname support. For include files, merge the prefix
1654 with the file pathname and eliminate unnecessary components. Convert
1655 backslashes in all pathnames to forward slashes, for readability. Include
1657 pathname changes affect both #include and Include() type operators.
1659 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
1661 of a valid line by inserting a newline and then returning the EOF during
1663 next call to GetNextLine. Prevents the line from being ignored due to EOF
1666 iASL: Implemented some changes to enhance the IDE support (-vi option.)
1668 and Warning messages are now correctly recognized for both the source
1670 browser and the global error and warning counts.
1672 ----------------------------------------
1673 20 April 2012. Summary of changes for version 20120420:
1676 1) ACPICA Core Subsystem:
1678 Implemented support for multiple notify handlers. This change adds
1681 allow multiple system and device notify handlers on Device, Thermal Zone,
1683 Processor objects. This can simplify the host OS notification
1685 Also re-worked and restructured the entire notify support code to
1687 handler installation, handler removal, notify event queuing, and notify
1688 dispatch to handler(s). Note: there can still only be two global notify
1689 handlers - one for system notifies and one for device notifies. There are
1691 changes to the existing handler install/remove interfaces. Lin Ming, Bob
1692 Moore, Rafael Wysocki.
1694 Fixed a regression in the package repair code where the object reference
1695 count was calculated incorrectly. Regression was introduced in the commit
1696 "Support to add Package wrappers".
1698 Fixed a couple possible memory leaks in the AML parser, in the error
1700 path. Jesper Juhl, Lin Ming.
1702 Example Code and Data Size: These are the sizes for the OS-independent
1703 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1704 debug version of the code includes the debug output trace mechanism and
1706 much larger code and data size.
1709 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1710 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1712 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1713 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1716 2) iASL Compiler/Disassembler and Tools:
1718 iASL: Fixed a problem with the resource descriptor support where the
1720 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
1721 included in cumulative descriptor offset, resulting in incorrect values
1723 resource tags within resource descriptors appearing after a
1725 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
1727 iASL and Preprocessor: Implemented full support for the #line directive
1729 correctly track original source file line numbers through the .i
1731 output file - for error and warning messages.
1733 iASL: Expand the allowable byte constants for address space IDs.
1735 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
1736 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
1738 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
1740 iASL: Add option to completely disable the preprocessor (-Pn).
1742 iASL: Now emit all error/warning messages to standard error (stderr) by
1743 default (instead of the previous stdout).
1745 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
1747 for resource descriptor offset fix above. Update/cleanup error output
1748 routines. Enable and send iASL errors/warnings to an error logfile
1749 (error.txt). Send all other iASL output to a logfile (compiler.txt).
1751 several extraneous "unrecognized operator" messages.
1753 ----------------------------------------
1754 20 March 2012. Summary of changes for version 20120320:
1757 1) ACPICA Core Subsystem:
1759 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
1760 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
1762 does not execute these methods, and therefore these methods are often
1763 untested. It has been seen on some systems where the execution of these
1764 methods causes errors and also prevents the machine from entering S5. It
1766 therefore suggested that host operating systems do not execute these
1768 by default. In the future, perhaps these methods can be optionally
1770 based on the age of the system and/or what is the newest version of
1772 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
1774 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
1777 Fixed a problem where the length of the local/common FADT was set too
1779 The local FADT table length cannot be set to the common length until the
1780 original length has been examined. There is code that checks the table
1782 and sets various fields appropriately. This can affect older machines
1784 early FADT versions. For example, this can cause inadvertent writes to
1786 CST_CNT register. Julian Anastasov.
1788 Fixed a mapping issue related to a physical table override. Use the
1790 mapping mechanism for tables loaded via the physical override OSL
1792 This allows for early mapping before the virtual memory manager is
1794 Thomas Renninger, Bob Moore.
1796 Enhanced the automatic return-object repair code: Repair a common problem
1798 predefined methods that are defined to return a variable-length Package
1800 sub-objects. If there is only one sub-object, some BIOS ASL code
1802 simply returns the single object instead of a Package with one sub-
1804 This new support will repair this error by wrapping a Package object
1806 the original object, creating the correct and expected Package with one
1808 object. Names that can be repaired in this manner include: _ALR, _CSD,
1810 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
1813 Changed the exception code returned for invalid ACPI paths passed as
1814 parameters to external interfaces such as AcpiEvaluateObject. Was
1815 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
1817 Example Code and Data Size: These are the sizes for the OS-independent
1818 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1820 version of the code includes the debug output trace mechanism and has a
1822 larger code and data size.
1825 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
1826 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1828 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1829 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1832 2) iASL Compiler/Disassembler and Tools:
1834 iASL: Added the infrastructure and initial implementation of a integrated
1836 like preprocessor. This will simplify BIOS development process by
1838 the need for a separate preprocessing step during builds. On Windows, it
1840 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
1841 features including full #define() macro support are still under
1843 These preprocessor directives are supported:
1856 In addition, these new command line options are supported:
1857 -D <symbol> Define symbol for preprocessor use
1858 -li Create preprocessed output file (*.i)
1859 -P Preprocess only and create preprocessor output file (*.i)
1861 Table Compiler: Fixed a problem where the equals operator within an
1863 did not work properly.
1865 Updated iASL to use the current versions of Bison/Flex. Updated the
1867 project file to invoke these tools from the standard location. ACPICA BZ
1870 Flex for Windows: V2.5.4
1871 Bison for Windows: V2.4.1
1873 ----------------------------------------
1874 15 February 2012. Summary of changes for version 20120215:
1877 1) ACPICA Core Subsystem:
1879 There have been some major changes to the sleep/wake support code, as
1880 described below (a - e).
1882 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
1883 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
1884 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
1886 time the _BFS method is called and the _WAK method is called. NOTE: all
1888 must update their wake/resume code or else sleep/wake will not work
1892 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
1894 method. Some machines require that the GPEs are enabled before the _WAK
1896 is executed. Thomas Renninger.
1898 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
1900 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
1902 determine whether the system is rebooting or resuming. Matthew Garrett.
1904 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
1906 match the ACPI specification requirement. Rafael Wysocki.
1908 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
1909 registers within the V5 FADT. This support adds two new files:
1910 hardware/hwesleep.c implements the support for the new registers. Moved
1912 sleep/wake external interfaces to hardware/hwxfsleep.c.
1915 Added a new OSL interface for ACPI table overrides,
1916 AcpiOsPhysicalTableOverride. This interface allows the host to override a
1917 table via a physical address, instead of the logical address required by
1918 AcpiOsTableOverride. This simplifies the host implementation. Initial
1919 implementation by Thomas Renninger. The ACPICA implementation creates a
1921 shared function for table overrides that attempts both a logical and a
1924 Expanded the OSL memory read/write interfaces to 64-bit data
1925 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
1926 transfer support for GAS register structures passed to AcpiRead and
1929 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
1931 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
1933 See the ACPICA reference for details. ACPICA BZ 942. This option removes
1935 10% of the code and 5% of the static data, and the following hardware
1937 features become unavailable:
1938 PM Event and Control registers
1939 SCI interrupt (and handler)
1941 General Purpose Events (GPEs)
1944 FACS table (Waking vectors and Global Lock)
1946 Updated the unix tarball directory structure to match the ACPICA git
1948 tree. This ensures that the generic unix makefiles work properly (in
1949 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
1952 Updated the return value of the _REV predefined method to integer value 5
1954 reflect ACPI 5.0 support.
1956 Moved the external ACPI PM timer interface prototypes to the public
1958 file where they belong.
1960 Example Code and Data Size: These are the sizes for the OS-independent
1961 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1963 version of the code includes the debug output trace mechanism and has a
1965 larger code and data size.
1968 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
1969 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
1971 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
1972 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1975 2) iASL Compiler/Disassembler and Tools:
1977 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
1978 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
1979 incorrectly displayed.
1981 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
1984 ----------------------------------------
1985 11 January 2012. Summary of changes for version 20120111:
1988 1) ACPICA Core Subsystem:
1990 Implemented a new mechanism to allow host device drivers to check for
1992 range conflicts with ACPI Operation Regions. Both SystemMemory and
1994 address spaces are supported. A new external interface,
1995 AcpiCheckAddressRange,
1996 allows drivers to check an address range against the ACPI namespace. See
1998 ACPICA reference for additional details. Adds one new file,
1999 utilities/utaddress.c. Lin Ming, Bob Moore.
2001 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2004 Status registers, update the ACPI 5.0 flags, and update internal data
2005 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2009 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2011 all module headers and signons, including the standard Linux header. This
2012 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2014 all ACPICA utilities.
2016 Example Code and Data Size: These are the sizes for the OS-independent
2017 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2019 version of the code includes the debug output trace mechanism and has a
2021 larger code and data size.
2024 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2025 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2027 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2028 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2031 2) iASL Compiler/Disassembler and Tools:
2033 Disassembler: fixed a problem with the automatic resource tag generation
2034 support. Fixes a problem where the resource tags are inadvertently not
2035 constructed if the table being disassembled contains external references
2037 control methods. Moved the actual construction of the tags to after the
2039 namespace is constructed (after 2nd parse is invoked due to external
2041 method references.) ACPICA BZ 941.
2043 Table Compiler: Make all "generic" operators caseless. These are the
2045 like UINT8, String, etc. Making these caseless improves ease-of-use.
2049 ----------------------------------------
2050 23 November 2011. Summary of changes for version 20111123:
2052 0) ACPI 5.0 Support:
2054 This release contains full support for the ACPI 5.0 specification, as
2057 Reduced Hardware Support:
2058 -------------------------
2060 This support allows for ACPI systems without the usual ACPI hardware.
2062 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2064 not attempt to initialize or use any of the usual ACPI hardware. Note,
2066 this flag is set, all of the following ACPI hardware is assumed to be not
2067 present and is not initialized or accessed:
2069 General Purpose Events (GPEs)
2070 Fixed Events (PM1a/PM1b and PM Control)
2071 Power Management Timer and Console Buttons (power/sleep)
2072 Real-time Clock Alarm
2074 System Control Interrupt (SCI)
2075 The FACS is assumed to be non-existent
2080 All new tables and updates to existing tables are fully supported in the
2081 ACPICA headers (for use by device drivers), the disassembler, and the
2083 Data Table Compiler. ACPI 5.0 defines these new tables:
2085 BGRT /* Boot Graphics Resource Table */
2086 DRTM /* Dynamic Root of Trust for Measurement table */
2087 FPDT /* Firmware Performance Data Table */
2088 GTDT /* Generic Timer Description Table */
2089 MPST /* Memory Power State Table */
2090 PCCT /* Platform Communications Channel Table */
2091 PMTT /* Platform Memory Topology Table */
2092 RASF /* RAS Feature table */
2094 Operation Regions/SpaceIDs:
2095 ---------------------------
2097 All new operation regions are fully supported by the iASL compiler, the
2098 disassembler, and the ACPICA runtime code (for dispatch to region
2100 The new operation region Space IDs are:
2105 Resource Descriptors:
2106 ---------------------
2108 All new ASL resource descriptors are fully supported by the iASL
2111 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2113 all new predefined resource tags). New descriptors are:
2122 ASL/AML Operators, New and Modified:
2123 ------------------------------------
2125 One new operator is added, the Connection operator, which is used to
2127 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2129 field objects within an operation region. Several new protocols are
2131 with the AccessAs operator. All are fully supported by the iASL compiler,
2132 disassembler, and runtime ACPICA AML interpreter:
2134 Connection // Declare Field Connection
2136 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2137 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2139 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2140 RawDataBuffer // Data type for Vendor Data
2143 Predefined ASL/AML Objects:
2144 ---------------------------
2146 All new predefined objects/control-methods are supported by the iASL
2148 and the ACPICA runtime validation/repair (arguments and return values.)
2150 predefined names include the following:
2152 Standard Predefined Names (Objects or Control Methods):
2153 _AEI, _CLS, _CPC, _CWS, _DEP,
2154 _DLM, _EVT, _GCP, _CRT, _GWS,
2155 _HRV, _PRE, _PSE, _SRT, _SUB.
2157 Resource Tags (Names used to access individual fields within resource
2159 _DBT, _DPL, _DRS, _END, _FLC,
2160 _IOR, _LIN, _MOD, _PAR, _PHA,
2161 _PIN, _PPI, _POL, _RXL, _SLV,
2162 _SPE, _STB, _TXL, _VEN.
2164 ACPICA External Interfaces:
2165 ---------------------------
2167 Several new interfaces have been defined for use by ACPI-related device
2168 drivers and other host OS services:
2170 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
2172 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
2173 provided by the BIOS. They are intended to be used in conjunction with
2175 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
2176 mutual exclusion with the AML code/interpreter.
2178 AcpiGetEventResources: Returns the (formatted) resource descriptors as
2180 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
2182 resource descriptors associated with hardware-reduced platform events,
2184 to the AcpiGetCurrentResources interface.
2186 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
2187 operation regions, information about the Connection() object and any
2189 length information is passed to the region handler within the Context
2192 AcpiBufferToResource: This interface converts a raw AML buffer containing
2194 resource template or resource descriptor to the ACPI_RESOURCE internal
2196 suitable for use by device drivers. Can be used by an operation region
2198 to convert the Connection() buffer object into a ACPI_RESOURCE.
2200 Miscellaneous/Tools/TestSuites:
2201 -------------------------------
2203 Support for extended _HID names (Four alpha characters instead of three).
2204 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
2205 Support for ACPI 5.0 features in the ASLTS test suite.
2206 Fully updated documentation (ACPICA and iASL reference documents.)
2208 ACPI Table Definition Language:
2209 -------------------------------
2211 Support for this language was implemented and released as a subsystem of
2213 iASL compiler in 2010. (See the iASL compiler User Guide.)
2216 Non-ACPI 5.0 changes for this release:
2217 --------------------------------------
2219 1) ACPICA Core Subsystem:
2221 Fix a problem with operation region declarations where a failure can
2224 the region name and an argument that evaluates to an object (such as the
2225 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
2228 Do not abort an ACPI table load if an invalid space ID is found within.
2230 will be caught later if the offending method is executed. ACPICA BZ 925.
2232 Fixed an issue with the FFixedHW space ID where the ID was not always
2233 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
2235 Fixed a problem with the 32-bit generation of the unix-specific OSL
2236 (osunixxf.c). Lin Ming, ACPICA BZ 936.
2238 Several changes made to enable generation with the GCC 4.6 compiler.
2242 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
2244 field registers out-of-range.
2246 2) iASL Compiler/Disassembler and Tools:
2248 iASL: Implemented the __PATH__ operator, which returns the full pathname
2250 the current source file.
2252 AcpiHelp: Automatically display expanded keyword information for all ASL
2255 Debugger: Add "Template" command to disassemble/dump resource template
2258 Added a new master script to generate and execute the ASLTS test suite.
2259 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
2261 iASL: Fix problem with listing generation during processing of the
2263 operator where AML listing was disabled until the entire Switch block was
2266 iASL: Improve support for semicolon statement terminators. Fix "invalid
2267 character" message for some cases when the semicolon is used. Semicolons
2269 now allowed after every <Term> grammar element. ACPICA BZ 927.
2271 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
2274 Disassembler: Fix problem with disassembly of the DataTableRegion
2276 where an inadvertent "Unhandled deferred opcode" message could be
2279 3) Example Code and Data Size
2281 These are the sizes for the OS-independent acpica.lib produced by the
2282 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2283 includes the debug output trace mechanism and has a much larger code and
2288 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2289 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2291 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2292 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2294 ----------------------------------------
2295 22 September 2011. Summary of changes for version 20110922:
2299 Support for ACPI 5.0 in ACPICA has been underway for several months and
2301 be released at the same time that ACPI 5.0 is officially released.
2303 The ACPI 5.0 specification is on track for release in the next few
2306 1) ACPICA Core Subsystem:
2308 Fixed a problem where the maximum sleep time for the Sleep() operator was
2309 intended to be limited to two seconds, but was inadvertently limited to
2313 Linux and Unix makefiles: Added header file dependencies to ensure
2315 generation of ACPICA core code and utilities. Also simplified the
2317 considerably through the use of the vpath variable to specify search
2321 2) iASL Compiler/Disassembler and Tools:
2323 iASL: Implemented support to check the access length for all fields
2325 access named Resource Descriptor fields. For example, if a resource field
2327 defined to be two bits, a warning is issued if a CreateXxxxField() is
2329 with an incorrect bit length. This is implemented for all current
2331 descriptor names. ACPICA BZ 930.
2333 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
2337 iASL: Fixed a couple of issues associated with variable-length package
2338 objects. 1) properly handle constants like One, Ones, Zero -- do not make
2340 VAR_PACKAGE when these are used as a package length. 2) Allow the
2342 opcode (in addition to PACKAGE) when validating object types for
2346 iASL: Emit statistics for all output files (instead of just the ASL input
2348 AML output). Includes listings, hex files, etc.
2350 iASL: Added -G option to the table compiler to allow the compilation of
2352 ACPI tables. The only part of a table that is required is the standard
2357 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
2359 which also adds correct 64-bit support. Also, now all output filenames
2361 completely lower case.
2363 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
2364 loading table files. A warning is issued for any such tables. The only
2365 exception is an FADT. This also fixes a possible fault when attempting to
2367 non-AML tables. ACPICA BZ 932.
2369 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
2371 missing table terminator could cause a fault when using the -p option.
2373 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
2376 3) Example Code and Data Size
2378 These are the sizes for the OS-independent acpica.lib produced by the
2379 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2380 includes the debug output trace mechanism and has a much larger code and
2384 Previous Release (VC 9.0):
2385 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2386 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2387 Current Release (VC 9.0):
2388 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2389 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2392 ----------------------------------------
2393 23 June 2011. Summary of changes for version 20110623:
2395 1) ACPI CA Core Subsystem:
2397 Updated the predefined name repair mechanism to not attempt repair of a
2399 return object if a _PSS object is present. We can only sort the _TSS
2401 package if there is no _PSS within the same scope. This is because if
2404 present, the ACPI specification dictates that the _TSS Power Dissipation
2406 is to be ignored, and therefore some BIOSs leave garbage values in the
2408 Power field(s). In this case, it is best to just return the _TSS package
2410 is. Reported by, and fixed with assistance from Fenghua Yu.
2412 Added an option to globally disable the control method return value
2414 and repair. This runtime option can be used to disable return value
2417 this is causing a problem on a particular machine. Also added an option
2419 AcpiExec (-dr) to set this disable flag.
2421 All makefiles and project files: Major changes to improve generation of
2423 tools. ACPICA BZ 912:
2424 Reduce default optimization levels to improve compatibility
2425 For Linux, add strict-aliasing=0 for gcc 4
2426 Cleanup and simplify use of command line defines
2427 Cleanup multithread library support
2428 Improve usage messages
2430 Linux-specific header: update handling of THREAD_ID and pthread. For the
2432 bit case, improve casting to eliminate possible warnings, especially with
2436 Example Code and Data Size: These are the sizes for the OS-independent
2437 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2439 version of the code includes the debug output trace mechanism and has a
2441 larger code and data size.
2443 Previous Release (VC 9.0):
2444 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2445 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2446 Current Release (VC 9.0):
2447 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2448 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2450 2) iASL Compiler/Disassembler and Tools:
2452 With this release, a new utility named "acpihelp" has been added to the
2454 package. This utility summarizes the ACPI specification chapters for the
2456 and AML languages. It generates under Linux/Unix as well as Windows, and
2457 provides the following functionality:
2458 Find/display ASL operator(s) -- with description and syntax.
2459 Find/display ASL keyword(s) -- with exact spelling and descriptions.
2460 Find/display ACPI predefined name(s) -- with description, number
2461 of arguments, and the return value data type.
2462 Find/display AML opcode name(s) -- with opcode, arguments, and
2464 Decode/display AML opcode -- with opcode name, arguments, and
2467 Service Layers: Make multi-thread support configurable. Conditionally
2469 the multi-thread support so that threading libraries will not be linked
2472 necessary. The only tool that requires multi-thread support is AcpiExec.
2474 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
2476 Bison appear to want the interface to yyerror to be a const char * (or at
2477 least this is a problem when generating iASL on some systems.) ACPICA BZ
2481 Tools: Fix for systems where O_BINARY is not defined. Only used for
2483 versions of the tools.
2485 ----------------------------------------
2486 27 May 2011. Summary of changes for version 20110527:
2488 1) ACPI CA Core Subsystem:
2490 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
2492 signature. Now, only allow SSDT, OEMx, and a null signature. History:
2493 1) Originally, we checked the table signature for "SSDT" or "PSDT".
2494 (PSDT is now obsolete.)
2495 2) We added support for OEMx tables, signature "OEM" plus a fourth
2496 "don't care" character.
2497 3) Valid tables were encountered with a null signature, so we just
2498 gave up on validating the signature, (05/2008).
2499 4) We encountered non-AML tables such as the MADT, which caused
2500 interpreter errors and kernel faults. So now, we once again allow
2501 only SSDT, OEMx, and now, also a null signature. (05/2011).
2503 Added the missing _TDL predefined name to the global name list in order
2505 enable validation. Affects both the core ACPICA code and the iASL
2508 Example Code and Data Size: These are the sizes for the OS-independent
2509 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2511 version of the code includes the debug output trace mechanism and has a
2513 larger code and data size.
2515 Previous Release (VC 9.0):
2516 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2517 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2518 Current Release (VC 9.0):
2519 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2520 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2522 2) iASL Compiler/Disassembler and Tools:
2524 Debugger/AcpiExec: Implemented support for "complex" method arguments on
2526 debugger command line. This adds support beyond simple integers --
2528 Strings, Buffers, and Packages. Includes support for nested packages.
2529 Increased the default command line buffer size to accommodate these
2531 See the ACPICA reference for details and syntax. ACPICA BZ 917.
2533 Debugger/AcpiExec: Implemented support for "default" method arguments for
2535 Execute/Debug command. Now, the debugger will always invoke a control
2537 with the required number of arguments -- even if the command line
2539 none or insufficient arguments. It uses default integer values for any
2541 arguments. Also fixes a bug where only six method arguments maximum were
2542 supported instead of the required seven.
2544 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
2546 also return status in order to prevent buffer overruns. See the ACPICA
2547 reference for details and syntax. ACPICA BZ 921
2549 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
2550 makefiles to simplify support for the two different but similar parser
2551 generators, bison and yacc.
2553 Updated the generic unix makefile for gcc 4. The default gcc version is
2555 expected to be 4 or greater, since options specific to gcc 4 are used.
2557 ----------------------------------------
2558 13 April 2011. Summary of changes for version 20110413:
2560 1) ACPI CA Core Subsystem:
2562 Implemented support to execute a so-called "orphan" _REG method under the
2564 device. This change will force the execution of a _REG method underneath
2567 device even if there is no corresponding operation region of type
2568 EmbeddedControl. Fixes a problem seen on some machines and apparently is
2569 compatible with Windows behavior. ACPICA BZ 875.
2571 Added more predefined methods that are eligible for automatic NULL
2573 element removal. This change adds another group of predefined names to
2576 of names that can be repaired by having NULL package elements dynamically
2577 removed. This group are those methods that return a single variable-
2579 package containing simple data types such as integers, buffers, strings.
2581 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
2584 and _TZD. ACPICA BZ 914.
2586 Split and segregated all internal global lock functions to a new file,
2589 Updated internal address SpaceID for DataTable regions. Moved this
2592 id in preparation for ACPI 5.0 changes that will include some new space
2595 change should not affect user/host code.
2597 Example Code and Data Size: These are the sizes for the OS-independent
2599 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2601 the code includes the debug output trace mechanism and has a much larger
2606 Previous Release (VC 9.0):
2607 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2608 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2609 Current Release (VC 9.0):
2610 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2611 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2613 2) iASL Compiler/Disassembler and Tools:
2615 iASL/DTC: Major update for new grammar features. Allow generic data types
2617 custom ACPI tables. Field names are now optional. Any line can be split
2619 multiple lines using the continuation char (\). Large buffers now use
2621 continuation character(s) and no colon on the continuation lines. See the
2623 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
2626 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
2628 Since the parser stuffs a "zero" as the return value for these statements
2631 the underlying AML grammar), they were seen as "return with value" by the
2633 semantic checking. They are now seen correctly as "null" return
2636 iASL: Check if a_REG declaration has a corresponding Operation Region.
2638 check for each _REG to ensure that there is in fact a corresponding
2640 region declaration in the same scope. If not, the _REG method is not very
2642 since it probably won't be executed. ACPICA BZ 915.
2644 iASL/DTC: Finish support for expression evaluation. Added a new
2647 that implements c-style operator precedence and parenthesization. ACPICA
2651 Disassembler/DTC: Remove support for () and <> style comments in data
2654 that DTC has full expression support, we don't want to have comment
2657 start with a parentheses or a less-than symbol. Now, only the standard /*
2660 comments are supported, as well as the bracket [] comments.
2662 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
2664 headers in the acpidump file. Update the header validation to support
2666 tables. Problem introduced in previous AcpiXtract version in the change
2668 support "wrong checksum" error messages emitted by acpidump utility.
2670 iASL: Add a * option to generate all template files (as a synonym for
2674 "iasl -T *" or "iasl -T ALL".
2676 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
2678 abort the compiler on "fatal" errors, simply should abort the current
2680 This allows multiple compiles with a single (possibly wildcard) compiler
2683 ----------------------------------------
2684 16 March 2011. Summary of changes for version 20110316:
2686 1) ACPI CA Core Subsystem:
2688 Fixed a problem caused by a _PRW method appearing at the namespace root
2690 during the setup of wake GPEs. A fault could occur if a _PRW directly
2693 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
2695 Implemented support for "spurious" Global Lock interrupts. On some
2697 global lock interrupt can occur without the pending flag being set. Upon
2700 interrupt, we now ensure that a thread is actually waiting for the lock
2702 signaling GL availability. Rafael Wysocki, Bob Moore.
2704 Example Code and Data Size: These are the sizes for the OS-independent
2706 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2708 the code includes the debug output trace mechanism and has a much larger
2713 Previous Release (VC 9.0):
2714 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2715 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2716 Current Release (VC 9.0):
2717 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2718 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2720 2) iASL Compiler/Disassembler and Tools:
2722 Implemented full support for the "SLIC" ACPI table. Includes support in
2724 header files, disassembler, table compiler, and template generator. Bob
2728 AcpiXtract: Correctly handle embedded comments and messages from
2730 Apparently some or all versions of acpidump will occasionally emit a
2733 "Wrong checksum", etc., into the dump file. This was causing problems for
2734 AcpiXtract. ACPICA BZ 905.
2736 iASL: Fix the Linux makefile by removing an inadvertent double file
2740 AcpiExec: Update installation of operation region handlers. Install one
2742 for a user-defined address space. This is used by the ASL test suite
2745 ----------------------------------------
2746 11 February 2011. Summary of changes for version 20110211:
2748 1) ACPI CA Core Subsystem:
2750 Added a mechanism to defer _REG methods for some early-installed
2752 Most user handlers should be installed before call to
2753 AcpiEnableSubsystem.
2754 However, Event handlers and region handlers should be installed after
2755 AcpiInitializeObjects. Override handlers for the "default" regions should
2757 installed early, however. This change executes all _REG methods for the
2758 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
2759 chicken/egg issues between them. ACPICA BZ 848.
2761 Implemented an optimization for GPE detection. This optimization will
2763 ignore GPE registers that contain no enabled GPEs -- there is no need to
2764 read the register since this information is available internally. This
2765 becomes more important on machines with a large GPE space. ACPICA
2767 884. Lin Ming. Suggestion from Joe Liu.
2769 Removed all use of the highly unreliable FADT revision field. The
2771 number in the FADT has been found to be completely unreliable and cannot
2773 trusted. Only the actual table length can be used to infer the version.
2775 change updates the ACPICA core and the disassembler so that both no
2777 even look at the FADT version and instead depend solely upon the FADT
2780 Fix an unresolved name issue for the no-debug and no-error-message source
2781 generation cases. The _AcpiModuleName was left undefined in these cases,
2783 it is actually needed as a parameter to some interfaces. Define
2784 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
2786 Split several large files (makefiles and project files updated)
2787 utglobal.c -> utdecode.c
2788 dbcomds.c -> dbmethod.c dbnames.c
2789 dsopcode.c -> dsargs.c dscontrol.c
2790 dsload.c -> dsload2.c
2791 aslanalyze.c -> aslbtypes.c aslwalks.c
2793 Example Code and Data Size: These are the sizes for the OS-independent
2794 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2795 debug version of the code includes the debug output trace mechanism and
2797 a much larger code and data size.
2799 Previous Release (VC 9.0):
2800 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2801 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2802 Current Release (VC 9.0):
2803 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2804 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2806 2) iASL Compiler/Disassembler and Tools:
2808 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
2809 These are useful C-style macros with the standard definitions. ACPICA
2812 iASL/DTC: Added support for integer expressions and labels. Support for
2814 expressions for all integer fields in all ACPI tables. Support for labels
2816 "generic" portions of tables such as UEFI. See the iASL reference manual.
2818 Debugger: Added a command to display the status of global handlers. The
2819 "handlers" command will display op region, fixed event, and miscellaneous
2820 global handlers. installation status -- and for op regions, whether
2822 or user-installed handler will be used.
2824 iASL: Warn if reserved method incorrectly returns a value. Many
2826 names are defined such that they do not return a value. If implemented as
2828 method, issue a warning if such a name explicitly returns a value. ACPICA
2831 iASL: Added detection of GPE method name conflicts. Detects a conflict
2833 there are two GPE methods of the form _Lxy and _Exy in the same scope.
2835 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
2837 iASL/DTC: Fixed a couple input scanner issues with comments and line
2838 numbers. Comment remover could get confused and miss a comment ending.
2840 a problem with line counter maintenance.
2842 iASL/DTC: Reduced the severity of some errors from fatal to error. There
2844 no need to abort on simple errors within a field definition.
2846 Debugger: Simplified the output of the help command. All help output now
2848 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
2850 ----------------------------------------
2851 12 January 2011. Summary of changes for version 20110112:
2853 1) ACPI CA Core Subsystem:
2855 Fixed a race condition between method execution and namespace walks that
2857 possibly cause a fault. The problem was apparently introduced in version
2858 20100528 as a result of a performance optimization that reduces the
2861 namespace walks upon method exit by using the delete_namespace_subtree
2862 function instead of the delete_namespace_by_owner function used
2864 Bug is a missing namespace lock in the delete_namespace_subtree function.
2865 dana.myers@oracle.com
2867 Fixed several issues and a possible fault with the automatic "serialized"
2868 method support. History: This support changes a method to "serialized" on
2870 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
2871 possibility that it cannot handle reentrancy. This fix repairs a couple
2873 issues seen in the field, especially on machines with many cores:
2875 1) Delete method children only upon the exit of the last thread,
2876 so as to not delete objects out from under other running threads
2877 (and possibly causing a fault.)
2878 2) Set the "serialized" bit for the method only upon the exit of the
2879 Last thread, so as to not cause deadlock when running threads
2881 3) Cleanup the use of the AML "MethodFlags" and internal method flags
2882 so that there is no longer any confusion between the two.
2884 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
2886 Debugger: Now lock the namespace for duration of a namespace dump.
2888 issues if the namespace is changing dynamically underneath the debugger.
2889 Especially affects temporary namespace nodes, since the debugger displays
2892 Updated the ordering of include files. The ACPICA headers should appear
2893 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
2895 any necessary compiler-specific defines, etc. Affects the ACPI-related
2899 Updated all ACPICA copyrights and signons to 2011. Added the 2011
2901 to all module headers and signons, including the Linux header. This
2903 virtually every file in the ACPICA core subsystem, iASL compiler, and all
2906 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
2907 project files for VC++ 6.0 are now obsolete. New project files can be
2909 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
2912 Example Code and Data Size: These are the sizes for the OS-independent
2913 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2914 debug version of the code includes the debug output trace mechanism and
2916 much larger code and data size.
2918 Previous Release (VC 6.0):
2919 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
2920 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
2921 Current Release (VC 9.0):
2922 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2923 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2925 2) iASL Compiler/Disassembler and Tools:
2927 iASL: Added generic data types to the Data Table compiler. Add "generic"
2929 types such as UINT32, String, Unicode, etc., to simplify the generation
2931 platform-defined tables such as UEFI. Lin Ming.
2933 iASL: Added listing support for the Data Table Compiler. Adds listing
2935 (-l) to display actual binary output for each line of input code.
2937 ----------------------------------------
2938 09 December 2010. Summary of changes for version 20101209:
2940 1) ACPI CA Core Subsystem:
2942 Completed the major overhaul of the GPE support code that was begun in
2944 2010. Major features include: removal of _PRW execution in ACPICA (host
2945 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
2946 changes to existing interfaces, simplification of GPE handler operation,
2948 a handful of new interfaces:
2954 One new file, evxfgpe.c to consolidate all external GPE interfaces.
2956 See the ACPICA Programmer Reference for full details and programming
2957 information. See the new section 4.4 "General Purpose Event (GPE)
2959 for a full overview, and section 8.7 "ACPI General Purpose Event
2961 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
2963 Bob Moore, Rafael Wysocki.
2965 Implemented a new GPE feature for Windows compatibility, the "Implicit
2967 GPE Notify". This feature will automatically issue a Notify(2) on a
2969 when a Wake GPE is received if there is no corresponding GPE method or
2970 handler. ACPICA BZ 870.
2972 Fixed a problem with the Scope() operator during table parse and load
2974 During load phase (table load or method execution), the scope operator
2976 not enter the target into the namespace. Instead, it should open a new
2978 at the target location. Linux BZ 19462, ACPICA BZ 882.
2980 Example Code and Data Size: These are the sizes for the OS-independent
2981 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2982 debug version of the code includes the debug output trace mechanism and
2984 much larger code and data size.
2987 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
2988 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
2990 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
2991 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
2993 2) iASL Compiler/Disassembler and Tools:
2995 iASL: Relax the alphanumeric restriction on _CID strings. These strings
2997 "bus-specific" per the ACPI specification, and therefore any characters
2999 acceptable. The only checks that can be performed are for a null string
3001 perhaps for a leading asterisk. ACPICA BZ 886.
3003 iASL: Fixed a problem where a syntax error that caused a premature EOF
3004 condition on the source file emitted a very confusing error message. The
3005 premature EOF is now detected correctly. ACPICA BZ 891.
3007 Disassembler: Decode the AccessSize within a Generic Address Structure
3009 access, word access, etc.) Note, this field does not allow arbitrary bit
3010 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3012 New: AcpiNames utility - Example namespace dump utility. Shows an example
3014 ACPICA configuration for a minimal namespace dump utility. Uses table and
3015 namespace managers, but no AML interpreter. Does not add any
3017 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3018 partition and configure ACPICA. ACPICA BZ 883.
3020 AML Debugger: Increased the debugger buffer size for method return
3022 Was 4K, increased to 16K. Also enhanced error messages for debugger
3024 execution, including the buffer overflow case.
3026 ----------------------------------------
3027 13 October 2010. Summary of changes for version 20101013:
3029 1) ACPI CA Core Subsystem:
3031 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3033 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3034 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3036 Changed the type of the predefined namespace object _TZ from ThermalZone
3038 Device. This was found to be confusing to the host software that
3040 the various thermal zones, since _TZ is not really a ThermalZone.
3043 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3046 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3047 string is "Windows 2006 SP2".
3049 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3051 code automatically repairs _HID-related strings, this type of code is no
3052 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3055 Example Code and Data Size: These are the sizes for the OS-independent
3056 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3057 debug version of the code includes the debug output trace mechanism and
3059 much larger code and data size.
3062 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3063 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3065 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3066 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3068 2) iASL Compiler/Disassembler and Tools:
3070 iASL: Implemented additional compile-time validation for _HID strings.
3072 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3075 the string must be exactly seven or eight characters. For both _HID and
3077 strings, all characters must be alphanumeric. ACPICA BZ 874.
3079 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3080 descriptors that are mostly or all zeros, with the expectation that they
3082 be filled in at runtime. iASL now allows this as long as there is a
3084 tag" (name) associated with the descriptor, which gives the ASL a handle
3085 needed to modify the descriptor. ACPICA BZ 873.
3087 Added single-thread support to the generic Unix application OSL.
3089 for iASL support, this change removes the use of semaphores in the
3091 threaded ACPICA tools/applications - increasing performance. The
3092 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3093 option. ACPICA BZ 879.
3095 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3097 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3099 iASL: Moved all compiler messages to a new file, aslmessages.h.
3101 ----------------------------------------
3102 15 September 2010. Summary of changes for version 20100915:
3104 1) ACPI CA Core Subsystem:
3106 Removed the AcpiOsDerivePciId OSL interface. The various host
3108 of this function were not OS-dependent and are now obsolete and can be
3109 removed from all host OSLs. This function has been replaced by
3110 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3111 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3112 module, hwpci.c. ACPICA BZ 857.
3114 Implemented a dynamic repair for _HID and _CID strings. The following
3115 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3116 string, and 2) the entire string is uppercased. Both repairs are in
3117 accordance with the ACPI specification and will simplify host driver
3121 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3122 always UINT64. This simplifies the ACPICA code, especially any printf
3124 UINT64 is the only common data type for all thread_id types across all
3125 operating systems. It is now up to the host OSL to cast the native
3127 type to UINT64 before returning the value to ACPICA (via
3129 Lin Ming, Bob Moore.
3131 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3133 keyword is not standard across compilers, and this type allows inline to
3135 configured on a per-compiler basis. Lin Ming.
3137 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3139 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3141 during suspend/restore operations. ACPICA BZ 869.
3143 All code that implements error/warning messages with the "ACPI:" prefix
3145 been moved to a new module, utxferror.c.
3147 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
3149 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
3151 Example Code and Data Size: These are the sizes for the OS-independent
3152 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3153 debug version of the code includes the debug output trace mechanism and
3155 much larger code and data size.
3158 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3159 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3161 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3162 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3164 2) iASL Compiler/Disassembler and Tools:
3166 iASL/Disassembler: Write ACPI errors to stderr instead of the output
3168 This keeps the output files free of random error messages that may
3170 from within the namespace/interpreter code. Used this opportunity to
3172 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
3173 866. Lin Ming, Bob Moore.
3175 Tools: update some printfs for ansi warnings on size_t. Handle width
3177 of size_t on 32-bit versus 64-bit generations. Lin Ming.
3179 ----------------------------------------
3180 06 August 2010. Summary of changes for version 20100806:
3182 1) ACPI CA Core Subsystem:
3184 Designed and implemented a new host interface to the _OSI support code.
3186 will allow the host to dynamically add or remove multiple _OSI strings,
3188 well as install an optional handler that is called for each _OSI
3190 Also added a new AML debugger command, 'osi' to display and modify the
3192 _OSI string table, and test support in the AcpiExec utility. See the
3194 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
3196 AcpiInstallInterface - Add an _OSI string.
3197 AcpiRemoveInterface - Delete an _OSI string.
3198 AcpiInstallInterfaceHandler - Install optional _OSI handler.
3200 AcpiOsValidateInterface - no longer used.
3202 source/components/utilities/utosi.c
3204 Re-introduced the support to enable multi-byte transfers for Embedded
3205 Controller (EC) operation regions. A reported problem was found to be a
3207 in the host OS, not in the multi-byte support. Previously, the maximum
3209 size passed to the EC operation region handler was a single byte. There
3211 often EC Fields larger than one byte that need to be transferred, and it
3213 useful for the EC driver to lock these as a single transaction. This
3215 enables single transfers larger than 8 bits. This effectively changes the
3216 access to the EC space from ByteAcc to AnyAcc, and will probably require
3217 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
3219 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
3221 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
3222 prototype in acpiosxf.h had the output value pointer as a (void *).
3223 It should be a (UINT64 *). This may affect some host OSL code.
3225 Fixed a couple problems with the recently modified Linux makefiles for
3227 and AcpiExec. These new makefiles place the generated object files in the
3228 local directory so that there can be no collisions between the files that
3230 shared between them that are compiled with different options.
3232 Example Code and Data Size: These are the sizes for the OS-independent
3233 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3234 debug version of the code includes the debug output trace mechanism and
3236 much larger code and data size.
3239 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3240 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3242 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3243 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3245 2) iASL Compiler/Disassembler and Tools:
3247 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
3249 namespace from and disassemble an entire group of AML files. Useful for
3250 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
3252 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
3254 iASL: Allow multiple invocations of -e option. This change allows
3256 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
3260 ----------------------------------------
3261 02 July 2010. Summary of changes for version 20100702:
3263 1) ACPI CA Core Subsystem:
3265 Implemented several updates to the recently added GPE reference count
3266 support. The model for "wake" GPEs is changing to give the host OS
3268 control of these GPEs. Eventually, the ACPICA core will not execute any
3270 methods, since the host already must execute them. Also, additional
3272 were made to help ensure that the reference counts are kept in proper
3273 synchronization with reality. Rafael J. Wysocki.
3275 1) Ensure that GPEs are not enabled twice during initialization.
3276 2) Ensure that GPE enable masks stay in sync with the reference count.
3277 3) Do not inadvertently enable GPEs when writing GPE registers.
3278 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
3279 interface. This interface will set or clear individual GPEs for wakeup.
3280 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
3282 are now used for "runtime" GPEs only.
3284 Changed the behavior of the GPE install/remove handler interfaces. The
3287 no longer disabled during this process, as it was found to cause problems
3289 some machines. Rafael J. Wysocki.
3291 Reverted a change introduced in version 20100528 to enable Embedded
3292 Controller multi-byte transfers. This change was found to cause problems
3294 Index Fields and possibly Bank Fields. It will be reintroduced when these
3295 problems have been resolved.
3297 Fixed a problem with references to Alias objects within Package Objects.
3299 reference to an Alias within the definition of a Package was not always
3300 resolved properly. Aliases to objects like Processors, Thermal zones,
3302 were resolved to the actual object instead of a reference to the object
3305 should be. Package objects are only allowed to contain integer, string,
3306 buffer, package, and reference objects. Redhat bugzilla 608648.
3308 Example Code and Data Size: These are the sizes for the OS-independent
3309 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3310 debug version of the code includes the debug output trace mechanism and
3312 much larger code and data size.
3315 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3316 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3318 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3319 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3321 2) iASL Compiler/Disassembler and Tools:
3323 iASL: Implemented a new compiler subsystem to allow definition and
3324 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
3326 are called "ACPI Data Tables", and the new compiler is the "Data Table
3327 Compiler". This compiler is intended to simplify the existing error-prone
3328 process of creating these tables for the BIOS, as well as allowing the
3329 disassembly, modification, recompilation, and override of existing ACPI
3331 tables. See the iASL User Guide for detailed information.
3333 iASL: Implemented a new Template Generator option in support of the new
3335 Table Compiler. This option will create examples of all known ACPI tables
3336 that can be used as the basis for table development. See the iASL
3337 documentation and the -T option.
3339 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
3342 Updated the Linux makefiles for iASL and AcpiExec to place the generated
3343 object files in the local directory so that there can be no collisions
3344 between the shared files between them that are generated with different
3347 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
3349 the #define __APPLE__ to enable this support.
3351 ----------------------------------------
3352 28 May 2010. Summary of changes for version 20100528:
3354 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
3355 available at www.acpi.info. This is primarily an errata release.
3357 1) ACPI CA Core Subsystem:
3359 Undefined ACPI tables: We are looking for the definitions for the
3361 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
3363 Implemented support to enable multi-byte transfers for Embedded
3365 (EC) operation regions. Previously, the maximum data size passed to the
3367 operation region handler was a single byte. There are often EC Fields
3369 than one byte that need to be transferred, and it is useful for the EC
3371 to lock these as a single transaction. This change enables single
3373 larger than 8 bits. This effectively changes the access to the EC space
3375 ByteAcc to AnyAcc, and will probably require changes to the host OS
3377 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
3379 transfers. Alexey Starikovskiy, Lin Ming
3381 Implemented a performance enhancement for namespace search and access.
3383 change enhances the performance of namespace searches and walks by adding
3385 backpointer to the parent in each namespace node. On large namespaces,
3387 change can improve overall ACPI performance by up to 9X. Adding a pointer
3389 each namespace node increases the overall size of the internal namespace
3391 about 5%, since each namespace entry usually consists of both a namespace
3392 node and an ACPI operand object. However, this is the first growth of the
3393 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
3395 Implemented a performance optimization that reduces the number of
3397 walks. On control method exit, only walk the namespace if the method is
3399 to have created namespace objects outside of its local scope. Previously,
3401 entire namespace was traversed on each control method exit. This change
3403 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
3406 Added support to truncate I/O addresses to 16 bits for Windows
3408 Some ASL code has been seen in the field that inadvertently has bits set
3409 above bit 15. This feature is optional and is enabled if the BIOS
3411 any Windows OSI strings. It can also be enabled by the host OS. Matthew
3414 Added support to limit the maximum time for the ASL Sleep() operator. To
3415 prevent accidental deep sleeps, limit the maximum time that Sleep() will
3416 actually sleep. Configurable, the default maximum is two seconds. ACPICA
3419 Added run-time validation support for the _WDG and_WED Microsoft
3421 methods. These objects are defined by "Windows Instrumentation", and are
3423 part of the ACPI spec. ACPICA BZ 860.
3425 Expanded all statistic counters used during namespace and device
3426 initialization from 16 to 32 bits in order to support very large
3429 Replaced all instances of %d in printf format specifiers with %u since
3431 all integers in ACPICA are unsigned.
3433 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
3437 Example Code and Data Size: These are the sizes for the OS-independent
3438 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3439 debug version of the code includes the debug output trace mechanism and
3441 much larger code and data size.
3444 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3445 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3447 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3448 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3450 2) iASL Compiler/Disassembler and Tools:
3452 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
3453 methods. These objects are defined by "Windows Instrumentation", and are
3455 part of the ACPI spec. ACPICA BZ 860.
3457 AcpiExec: added option to disable the memory tracking mechanism. The -dt
3458 option will disable the tracking mechanism, which improves performance
3461 AcpiExec: Restructured the command line options into -d (disable) and -e
3464 ----------------------------------------
3465 28 April 2010. Summary of changes for version 20100428:
3467 1) ACPI CA Core Subsystem:
3469 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
3470 including FADT-based and GPE Block Devices, execute any _PRW methods in
3472 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
3473 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
3474 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
3475 Devices. Provides compatibility with other ACPI implementations. Two new
3476 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
3479 Fixed a regression introduced in version 20100331 within the table
3481 where initial table loading could fail. This was introduced in the fix
3483 AcpiReallocateRootTable. Also, renamed some of fields in the table
3485 data structures to clarify their meaning and use.
3487 Fixed a possible allocation overrun during internal object copy in
3488 AcpiUtCopySimpleObject. The original code did not correctly handle the
3490 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
3493 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
3494 possible access beyond end-of-allocation. Also, now fully validate
3496 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
3498 Example Code and Data Size: These are the sizes for the OS-independent
3499 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3500 debug version of the code includes the debug output trace mechanism and
3502 much larger code and data size.
3505 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3506 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3508 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3509 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3511 2) iASL Compiler/Disassembler and Tools:
3513 iASL: Implemented Min/Max/Len/Gran validation for address resource
3514 descriptors. This change implements validation for the address fields
3516 are common to all address-type resource descriptors. These checks are
3517 implemented: Checks for valid Min/Max, length within the Min/Max window,
3518 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
3520 table 6-40 in the ACPI 4.0a specification. Also split the large
3522 and aslrestype2.c files into five new files. ACPICA BZ 840.
3524 iASL: Added support for the _Wxx predefined names. This support was
3526 and these names were not recognized by the compiler as valid predefined
3527 names. ACPICA BZ 851.
3529 iASL: Added an error for all predefined names that are defined to return
3531 value and thus must be implemented as Control Methods. These include all
3533 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
3534 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
3536 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
3538 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
3540 dynamically loaded via the Load() operator. Also cleaned up output for
3543 ta and -tc options. ACPICA BZ 853.
3545 Tests: Added a new file with examples of extended iASL error checking.
3546 Demonstrates the advanced error checking ability of the iASL compiler.
3547 Available at tests/misc/badcode.asl.
3549 ----------------------------------------
3550 31 March 2010. Summary of changes for version 20100331:
3552 1) ACPI CA Core Subsystem:
3554 Completed a major update for the GPE support in order to improve support
3556 shared GPEs and to simplify both host OS and ACPICA code. Added a
3558 count mechanism to support shared GPEs that require multiple device
3560 Several external interfaces have changed. One external interface has been
3561 removed. One new external interface was added. Most of the GPE external
3562 interfaces now use the GPE spinlock instead of the events mutex (and the
3563 Flags parameter for many GPE interfaces has been removed.) See the
3565 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
3567 Wysocki. ACPICA BZ 831.
3570 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
3576 Implemented write support for DataTable operation regions. These regions
3578 defined via the DataTableRegion() operator. Previously, only read support
3580 implemented. The ACPI specification allows DataTableRegions to be
3584 Implemented a new subsystem option to force a copy of the DSDT to local
3585 memory. Optionally copy the entire DSDT to local memory (instead of
3587 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
3589 the original DSDT, creating the need for this option. Default is FALSE,
3593 Implemented detection of a corrupted or replaced DSDT. This change adds
3594 support to detect a DSDT that has been corrupted and/or replaced from
3596 the OS (by firmware). This is typically catastrophic for the system, but
3598 been seen on some machines. Once this problem has been detected, the DSDT
3599 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
3601 Fixed two problems with AcpiReallocateRootTable during the root table
3603 When copying the root table to the new allocation, the length used was
3604 incorrect. The new size was used instead of the current table size,
3606 too much data was copied. Also, the count of available slots for ACPI
3608 was not set correctly. Alexey Starikovskiy, Bob Moore.
3610 Example Code and Data Size: These are the sizes for the OS-independent
3611 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3612 debug version of the code includes the debug output trace mechanism and
3614 much larger code and data size.
3617 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3618 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3620 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3621 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3623 2) iASL Compiler/Disassembler and Tools:
3625 iASL: Implement limited typechecking for values returned from predefined
3626 control methods. The type of any returned static (unnamed) object is now
3627 validated. For example, Return(1). ACPICA BZ 786.
3629 iASL: Fixed a predefined name object verification regression. Fixes a
3631 introduced in version 20100304. An error is incorrectly generated if a
3632 predefined name is declared as a static named object with a value defined
3633 using the keywords "Zero", "One", or "Ones". Lin Ming.
3635 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
3637 reducing the requested registry access rights. ACPICA BZ 842.
3639 Disassembler: fixed a possible fault when generating External()
3641 Introduced in commit ae7d6fd: Properly handle externals with parent-
3643 (carat). Fixes a string length allocation calculation. Lin Ming.
3645 ----------------------------------------
3646 04 March 2010. Summary of changes for version 20100304:
3648 1) ACPI CA Core Subsystem:
3650 Fixed a possible problem with the AML Mutex handling function
3651 AcpiExReleaseMutex where the function could fault under the very rare
3652 condition when the interpreter has blocked, the interpreter lock is
3654 the interpreter is then reentered via the same thread, and attempts to
3655 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
3659 Implemented additional configuration support for the AML "Debug Object".
3660 Output from the debug object can now be enabled via a global variable,
3661 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
3663 This debug output is now available in the release version of ACPICA
3665 of just the debug version. Also, the entire debug output module can now
3667 configured out of the ACPICA build if desired. One new file added,
3668 executer/exdebug.c. Lin Ming, Bob Moore.
3670 Added header support for the ACPI MCHI table (Management Controller Host
3671 Interface Table). This table was added in ACPI 4.0, but the defining
3673 has only recently become available.
3675 Standardized output of integer values for ACPICA warnings/errors. Always
3677 0x prefix for hex output, always use %u for unsigned integer decimal
3679 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
3681 invocations.) These invocations were converted from the original
3682 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
3684 Example Code and Data Size: These are the sizes for the OS-independent
3685 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3686 debug version of the code includes the debug output trace mechanism and
3688 much larger code and data size.
3691 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
3692 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
3694 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3695 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3697 2) iASL Compiler/Disassembler and Tools:
3699 iASL: Implemented typechecking support for static (non-control method)
3700 predefined named objects that are declared with the Name() operator. For
3701 example, the type of this object is now validated to be of type Integer:
3702 Name(_BBN, 1). This change migrates the compiler to using the core
3704 name table instead of maintaining a local version. Added a new file,
3705 aslpredef.c. ACPICA BZ 832.
3707 Disassembler: Added support for the ACPI 4.0 MCHI table.
3709 ----------------------------------------
3710 21 January 2010. Summary of changes for version 20100121:
3712 1) ACPI CA Core Subsystem:
3714 Added the 2010 copyright to all module headers and signons. This affects
3715 virtually every file in the ACPICA core subsystem, the iASL compiler, the
3716 tools/utilities, and the test suites.
3718 Implemented a change to the AcpiGetDevices interface to eliminate
3720 invocations of the _STA method. In the case where a specific _HID is
3721 requested, do not run _STA until a _HID match is found. This eliminates
3722 potentially dozens of _STA calls during a search for a particular
3724 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
3726 Implemented an additional repair for predefined method return values.
3728 to repair unexpected NULL elements within returned Package objects.
3731 Integer of value zero, a NULL String, or a zero-length Buffer as
3733 ACPICA BZ 818. Lin Ming, Bob Moore.
3735 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
3737 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
3739 64-bit AML integers). It is now obsolete and this change removes it from
3741 ACPICA code base, replaced by UINT64. The original typedef has been
3743 for now for compatibility with existing device driver code. ACPICA BZ
3746 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
3748 the parse tree object.
3750 Added additional warning options for the gcc-4 generation. Updated the
3752 accordingly. This includes some code restructuring to eliminate
3754 code, elimination of some gotos, elimination of unused return values,
3756 additional casting, and removal of redundant declarations.
3758 Example Code and Data Size: These are the sizes for the OS-independent
3759 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3760 debug version of the code includes the debug output trace mechanism and
3762 much larger code and data size.
3765 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
3766 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
3768 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
3769 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
3771 2) iASL Compiler/Disassembler and Tools:
3773 No functional changes for this release.
3775 ----------------------------------------
3776 14 December 2009. Summary of changes for version 20091214:
3778 1) ACPI CA Core Subsystem:
3780 Enhanced automatic data type conversions for predefined name repairs.
3782 change expands the automatic repairs/conversions for predefined name
3784 values to make Integers, Strings, and Buffers fully interchangeable.
3787 Buffer can be converted to a Package of Integers if necessary. The
3789 module was completely restructured. Lin Ming, Bob Moore.
3791 Implemented automatic removal of null package elements during predefined
3793 repairs. This change will automatically remove embedded and trailing NULL
3794 package elements from returned package objects that are defined to
3797 variable number of sub-packages. The driver is then presented with a
3799 with no null elements to deal with. ACPICA BZ 819.
3801 Implemented a repair for the predefined _FDE and _GTM names. The expected
3802 return value for both names is a Buffer of 5 DWORDs. This repair fixes
3804 possible problems (both seen in the field), where a package of integers
3806 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
3809 Implemented additional module-level code support. This change will
3811 execute module-level code that is not at the root of the namespace (under
3813 Device object, etc.). Now executes the code within the current scope
3815 of the root. ACPICA BZ 762. Lin Ming.
3817 Fixed possible mutex acquisition errors when running _REG methods. Fixes
3819 problem where mutex errors can occur when running a _REG method that is
3821 the same scope as a method-defined operation region or an operation
3823 under a module-level IF block. This type of code is rare, so the problem
3825 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
3827 Fixed a possible memory leak during module-level code execution. An
3829 could be leaked for each block of executed module-level code if the
3830 interpreter slack mode is enabled This change deletes any implicitly
3832 object from the module-level code block. Lin Ming.
3834 Removed messages for successful predefined repair(s). The repair
3836 was considered too wordy. Now, messages are only unconditionally emitted
3838 the return object cannot be repaired. Existing messages for successful
3839 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
3842 Example Code and Data Size: These are the sizes for the OS-independent
3843 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3844 debug version of the code includes the debug output trace mechanism and
3846 much larger code and data size.
3849 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
3850 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
3852 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
3853 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
3855 2) iASL Compiler/Disassembler and Tools:
3857 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
3859 were no longer automatically removed at the termination of the compile.
3861 acpiexec: Implemented the -f option to specify default region fill value.
3862 This option specifies the value used to initialize buffers that simulate
3863 operation regions. Default value is zero. Useful for debugging problems
3865 depend on a specific initial value for a region or field.
3867 ----------------------------------------
3868 12 November 2009. Summary of changes for version 20091112:
3870 1) ACPI CA Core Subsystem:
3872 Implemented a post-order callback to AcpiWalkNamespace. The existing
3873 interface only has a pre-order callback. This change adds an additional
3874 parameter for a post-order callback which will be more useful for bus
3876 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
3878 Modified the behavior of the operation region memory mapping cache for
3879 SystemMemory. Ensure that the memory mappings created for operation
3881 do not cross 4K page boundaries. Crossing a page boundary while mapping
3882 regions can cause kernel warnings on some hosts if the pages have
3884 attributes. Such regions are probably BIOS bugs, and this is the
3886 Linux BZ 14445. Lin Ming.
3888 Implemented an automatic repair for predefined methods that must return
3889 sorted lists. This change will repair (by sorting) packages returned by
3891 _PSS, and _TSS. Drivers can now assume that the packages are correctly
3893 and do not contain NULL package elements. Adds one new file,
3894 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
3896 Fixed a possible fault during predefined name validation if a return
3898 object contains NULL elements. Also adds a warning if a NULL element is
3899 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
3901 include repair or removal of all such NULL elements where possible.
3903 Implemented additional module-level executable AML code support. This
3905 will execute module-level code that is not at the root of the namespace
3906 (under a Device object, etc.) at table load time. Module-level executable
3908 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
3910 Implemented a new internal function to create Integer objects. This
3912 simplifies miscellaneous object creation code. ACPICA BZ 823.
3914 Reduced the severity of predefined repair messages, Warning to Info.
3916 the object was successfully repaired, a warning is too severe. Reduced to
3918 info message for now. These messages may eventually be changed to debug-
3922 Example Code and Data Size: These are the sizes for the OS-independent
3923 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3924 debug version of the code includes the debug output trace mechanism and
3926 much larger code and data size.
3929 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
3930 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
3932 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
3933 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
3935 2) iASL Compiler/Disassembler and Tools:
3937 iASL: Implemented Switch() with While(1) so that Break works correctly.
3939 change correctly implements the Switch operator with a surrounding
3941 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
3943 iASL: Added a message if a package initializer list is shorter than
3945 length. Adds a new remark for a Package() declaration if an initializer
3947 exists, but is shorter than the declared length of the package. Although
3948 technically legal, this is probably a coding error and it is seen in the
3949 field. ACPICA BZ 815. Lin Ming, Bob Moore.
3951 iASL: Fixed a problem where the compiler could fault after the maximum
3953 of errors was reached (200).
3955 acpixtract: Fixed a possible warning for pointer cast if the compiler
3957 level set very high.
3959 ----------------------------------------
3960 13 October 2009. Summary of changes for version 20091013:
3962 1) ACPI CA Core Subsystem:
3964 Fixed a problem where an Operation Region _REG method could be executed
3966 than once. If a custom address space handler is installed by the host
3968 the "initialize operation regions" phase of the ACPICA initialization,
3970 _REG methods for that address space could be executed twice. This change
3971 fixes the problem. ACPICA BZ 427. Lin Ming.
3973 Fixed a possible memory leak for the Scope() ASL operator. When the exact
3974 invocation of "Scope(\)" is executed (change scope to root), one internal
3975 operand object was leaked. Lin Ming.
3977 Implemented a run-time repair for the _MAT predefined method. If the _MAT
3978 return value is defined as a Field object in the AML, and the field
3979 size is less than or equal to the default width of an integer (32 or
3981 can incorrectly return an Integer instead of a Buffer. ACPICA now
3982 automatically repairs this problem. ACPICA BZ 810.
3984 Implemented a run-time repair for the _BIF and _BIX predefined methods.
3986 "OEM Information" field is often incorrectly returned as an Integer with
3987 value zero if the field is not supported by the platform. This is due to
3989 ambiguity in the ACPI specification. The field should always be a string.
3990 ACPICA now automatically repairs this problem by returning a NULL string
3991 within the returned Package. ACPICA BZ 807.
3993 Example Code and Data Size: These are the sizes for the OS-independent
3994 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3995 debug version of the code includes the debug output trace mechanism and
3997 much larger code and data size.
4000 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4001 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4003 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4004 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4006 2) iASL Compiler/Disassembler and Tools:
4008 Disassembler: Fixed a problem where references to external symbols that
4009 contained one or more parent-prefixes (carats) were not handled
4011 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4013 Disassembler: Restructured the code so that all functions that handle
4014 external symbols are in a single module. One new file is added,
4017 AML Debugger: Added a max count argument for the Batch command (which
4018 executes multiple predefined methods within the namespace.)
4020 iASL: Updated the compiler documentation (User Reference.) Available at
4021 http://www.acpica.org/documentation/. ACPICA BZ 750.
4023 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4026 ----------------------------------------
4027 03 September 2009. Summary of changes for version 20090903:
4029 1) ACPI CA Core Subsystem:
4031 For Windows Vista compatibility, added the automatic execution of an _INI
4032 method located at the namespace root (\_INI). This method is executed at
4033 table load time. This support is in addition to the automatic execution
4035 \_SB._INI. Lin Ming.
4037 Fixed a possible memory leak in the interpreter for AML package objects
4039 the package initializer list is longer than the defined size of the
4041 This apparently can only happen if the BIOS changes the package size on
4043 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4044 interpreter will truncate the package to the defined size (and issue an
4046 message), but previously could leave the extra objects undeleted if they
4048 pre-created during the argument processing (such is the case if the
4050 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4052 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4053 This has been reported in the field. Previously, ACPICA would zero out
4055 buffer/string. Now, the operation is treated as a noop. Provides Windows
4056 compatibility. ACPICA BZ 803. Lin Ming.
4058 Removed an extraneous error message for ASL constructs of the form
4059 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4061 are seen in many BIOSs and are once again treated as NOOPs and no error
4063 emitted when they are encountered. ACPICA BZ 785.
4065 Fixed an extraneous warning message if a _DSM reserved method returns a
4066 Package object. _DSM can return any type of object, so validation on the
4067 return type cannot be performed. ACPICA BZ 802.
4069 Example Code and Data Size: These are the sizes for the OS-independent
4070 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4071 debug version of the code includes the debug output trace mechanism and
4073 much larger code and data size.
4076 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4077 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4079 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4080 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4082 2) iASL Compiler/Disassembler and Tools:
4084 iASL: Fixed a problem with the use of the Alias operator and Resource
4085 Templates. The correct alias is now constructed and no error is emitted.
4088 iASL: Implemented the -I option to specify additional search directories
4090 include files. Allows multiple additional search paths for include files.
4091 Directories are searched in the order specified on the command line
4093 the local directory is searched.) ACPICA BZ 800.
4095 iASL: Fixed a problem where the full pathname for include files was not
4096 emitted for warnings/errors. This caused the IDE support to not work
4097 properly. ACPICA BZ 765.
4099 iASL: Implemented the -@ option to specify a Windows-style response file
4100 containing additional command line options. ACPICA BZ 801.
4102 AcpiExec: Added support to load multiple AML files simultaneously (such
4105 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4106 pathname. These features allow all machine tables to be easily loaded and
4107 debugged together. ACPICA BZ 804.
4109 Disassembler: Added missing support for disassembly of HEST table Error
4113 ----------------------------------------
4114 30 July 2009. Summary of changes for version 20090730:
4116 The ACPI 4.0 implementation for ACPICA is complete with this release.
4118 1) ACPI CA Core Subsystem:
4120 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4121 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4123 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4125 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4127 have been some ACPI 4.0 changes to other existing tables. Split the large
4128 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4130 ACPI 4.0: Implemented predefined name validation for all new names. There
4132 31 new names in ACPI 4.0. The predefined validation module was split into
4134 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4136 Implemented support for so-called "module-level executable code". This is
4137 executable AML code that exists outside of any control method and is
4139 to be executed at table load time. Although illegal since ACPI 2.0, this
4141 of code still exists and is apparently still being created. Blocks of
4143 code are now detected and executed as intended. Currently, the code
4145 must exist under either an If, Else, or While construct; these are the
4146 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
4148 Implemented an automatic dynamic repair for predefined names that return
4149 nested Package objects. This applies to predefined names that are defined
4151 return a variable-length Package of sub-packages. If the number of sub-
4152 packages is one, BIOS code is occasionally seen that creates a simple
4154 package with no sub-packages. This code attempts to fix the problem by
4155 wrapping a new package object around the existing package. These methods
4157 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
4161 Fixed a regression introduced in 20090625 for the AcpiGetDevices
4163 The _HID/_CID matching was broken and no longer matched IDs correctly.
4167 Fixed a problem with AcpiReset where the reset would silently fail if the
4168 register was one of the protected I/O ports. AcpiReset now bypasses the
4170 validation mechanism. This may eventually be driven into the
4174 Fixed a regression related to the recent update of the AcpiRead/Write
4175 interfaces. A sleep/suspend could fail if the optional PM2 Control
4177 does not exist during an attempt to write the Bus Master Arbitration bit.
4178 (However, some hosts already delete the code that writes this bit, and
4180 code may in fact be obsolete at this date.) ACPICA BZ 799.
4182 Fixed a problem where AcpiTerminate could fault if inadvertently called
4184 in succession. ACPICA BZ 795.
4186 Example Code and Data Size: These are the sizes for the OS-independent
4187 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4188 debug version of the code includes the debug output trace mechanism and
4190 much larger code and data size.
4193 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4194 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4196 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4197 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4199 2) iASL Compiler/Disassembler and Tools:
4201 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
4202 changes to existing tables. ACPICA BZ 775.
4204 ----------------------------------------
4205 25 June 2009. Summary of changes for version 20090625:
4207 The ACPI 4.0 Specification was released on June 16 and is available at
4208 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
4209 continue for the next few releases.
4211 1) ACPI CA Core Subsystem:
4213 ACPI 4.0: Implemented interpreter support for the IPMI operation region
4214 address space. Includes support for bi-directional data buffers and an
4216 address space handler (to be installed by an IPMI device driver.) ACPICA
4220 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
4222 support in both the header files and the disassembler.
4224 Completed a major update for the AcpiGetObjectInfo external interface.
4226 - Support for variable, unlimited length HID, UID, and CID strings.
4227 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
4229 - Call the _SxW power methods on behalf of a device object.
4230 - Determine if a device is a PCI root bridge.
4231 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
4232 These changes will require an update to all callers of this interface.
4234 the updated ACPICA Programmer Reference for details. One new source file
4236 been added - utilities/utids.c. ACPICA BZ 368, 780.
4238 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
4239 transfers. The Value parameter has been extended from 32 bits to 64 bits
4241 order to support new ACPI 4.0 tables. These changes will require an
4244 all callers of these interfaces. See the ACPICA Programmer Reference for
4245 details. ACPICA BZ 768.
4247 Fixed several problems with AcpiAttachData. The handler was not invoked
4249 the host node was deleted. The data sub-object was not automatically
4251 when the host node was deleted. The interface to the handler had an
4253 parameter, this was removed. ACPICA BZ 778.
4255 Enhanced the function that dumps ACPI table headers. All non-printable
4256 characters in the string fields are now replaced with '?' (Signature,
4258 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
4259 these fields are occasionally seen in the field. ACPICA BZ 788.
4261 Fixed a problem with predefined method repair code where the code that
4262 attempts to repair/convert an object of incorrect type is only executed
4264 the first time the predefined method is called. The mechanism that
4266 warnings on subsequent calls was interfering with the repair mechanism.
4269 Fixed a possible memory leak in the predefined validation/repair code
4272 buffer is automatically converted to an expected string object.
4274 Removed obsolete 16-bit files from the distribution and from the current
4276 tree head. ACPICA BZ 776.
4278 Example Code and Data Size: These are the sizes for the OS-independent
4279 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4280 debug version of the code includes the debug output trace mechanism and
4282 much larger code and data size.
4285 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4286 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4288 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4289 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4291 2) iASL Compiler/Disassembler and Tools:
4293 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
4294 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
4296 ACPI 4.0: iASL - implemented compile-time validation support for all new
4297 predefined names and control methods (31 total). ACPICA BZ 769.
4299 ----------------------------------------
4300 21 May 2009. Summary of changes for version 20090521:
4302 1) ACPI CA Core Subsystem:
4304 Disabled the preservation of the SCI enable bit in the PM1 control
4306 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
4309 a "preserved" bit - "OSPM always preserves this bit position", section
4310 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
4311 because the bit needs to be explicitly set by the OS as a workaround. No
4312 machines fail if the bit is not preserved. Therefore, ACPICA no longer
4313 attempts to preserve this bit.
4315 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
4316 incorrectly formed _PRT package could cause a fault. Added validation to
4317 ensure that each package element is actually a sub-package.
4319 Implemented a new interface to install or override a single control
4321 AcpiInstallMethod. This interface is useful when debugging in order to
4323 an existing method or to install a missing method without having to
4325 the entire ACPI table. See the ACPICA Programmer Reference for use and
4326 examples. Lin Ming, Bob Moore.
4328 Fixed several reference count issues with the DdbHandle object that is
4329 created from a Load or LoadTable operator. Prevent premature deletion of
4331 object. Also, mark the object as invalid once the table has been
4333 This is needed because the handle itself may not be deleted after the
4335 unload, depending on whether it has been stored in a named object by the
4338 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
4339 mutexes of the same sync level are acquired but then not released in
4341 opposite order, the internally maintained Current Sync Level becomes
4343 and can cause subsequent execution errors. ACPICA BZ 471.
4345 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
4346 specification has been changed to make the SyncLevel for mutex objects
4348 useful. When releasing a mutex, the SyncLevel of the mutex must now be
4350 same as the current sync level. This makes more sense than the previous
4352 (SyncLevel less than or equal). This change updates the code to match the
4355 Fixed a problem with the local version of the AcpiOsPurgeCache function.
4357 (local) cache must be locked during all cache object deletions. Andrew
4360 Updated the Load operator to use operation region interfaces. This
4362 direct memory mapping with region access calls. Now, all region accesses
4364 through the installed region handler as they should.
4366 Simplified and optimized the NsGetNextNode function. Reduced parameter
4368 and reduced code for this frequently used function.
4370 Example Code and Data Size: These are the sizes for the OS-independent
4371 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4372 debug version of the code includes the debug output trace mechanism and
4374 much larger code and data size.
4377 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4378 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4380 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4381 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4383 2) iASL Compiler/Disassembler and Tools:
4385 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
4387 with sub-table disassembly and handling invalid sub-tables. Attempt
4389 after an invalid sub-table ID.
4391 ----------------------------------------
4392 22 April 2009. Summary of changes for version 20090422:
4394 1) ACPI CA Core Subsystem:
4396 Fixed a compatibility issue with the recently released I/O port
4398 mechanism. For windows compatibility, 1) On a port protection violation,
4399 simply ignore the request and do not return an exception (allow the
4401 method to continue execution.) 2) If only part of the request overlaps a
4402 protected port, read/write the individual ports that are not protected.
4406 Enhanced the execution of the ASL/AML BreakPoint operator so that it
4408 breaks into the AML debugger if the debugger is present. This matches the
4409 ACPI-defined behavior.
4411 Fixed several possible warnings related to the use of the configurable
4412 ACPI_THREAD_ID. This type can now be configured as either an integer or a
4413 pointer with no warnings. Also fixes several warnings in printf-like
4414 statements for the 64-bit build when the type is configured as a pointer.
4417 Fixed a number of possible warnings when compiling with gcc 4+ (depending
4419 warning options.) Examples include printf formats, aliasing, unused
4421 missing prototypes, missing switch default statements, use of non-ANSI
4422 library functions, use of non-ANSI constructs. See generate/unix/Makefile
4424 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
4426 Example Code and Data Size: These are the sizes for the OS-independent
4427 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4428 debug version of the code includes the debug output trace mechanism and
4430 much larger code and data size.
4433 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4434 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4436 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4437 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4439 2) iASL Compiler/Disassembler and Tools:
4441 iASL: Fixed a generation warning from Bison 2.3 and fixed several
4446 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
4448 correctly digest Windows/DOS formatted files (with CR/LF).
4450 iASL: Added a new option for "quiet mode" (-va) that produces only the
4451 compilation summary, not individual errors and warnings. Useful for large
4454 AcpiExec: Implemented a new option (-z) to enable a forced
4456 timeout that can be used to detect hang conditions during execution of
4458 code (includes both internal semaphores and AML-defined mutexes and
4461 Added new makefiles for the generation of acpica in a generic unix-like
4462 environment. These makefiles are intended to generate the acpica tools
4464 utilities from the original acpica git source tree structure.
4466 Test Suites: Updated and cleaned up the documentation files. Updated the
4467 copyrights to 2009, affecting all source files. Use the new version of
4469 with quiet mode. Increased the number of available semaphores in the
4471 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
4473 an alternate implementation of the semaphore timeout to allow aslts to
4474 execute fully on Cygwin.
4476 ----------------------------------------
4477 20 March 2009. Summary of changes for version 20090320:
4479 1) ACPI CA Core Subsystem:
4481 Fixed a possible race condition between AcpiWalkNamespace and dynamic
4483 unloads. Added a reader/writer locking mechanism to allow multiple
4485 namespace walks (readers), but block a dynamic table unload until it can
4487 exclusive write access to the namespace. This fixes a problem where a
4489 unload could (possibly catastrophically) delete the portion of the
4491 that is currently being examined by a walk. Adds a new file, utlock.c,
4493 implements the reader/writer lock mechanism. ACPICA BZ 749.
4495 Fixed a regression introduced in version 20090220 where a change to the
4497 handling could cause the ACPICA subsystem to access non-existent I/O
4500 Modified the handling of FADT register and table (FACS/DSDT) addresses.
4502 FADT can contain both 32-bit and 64-bit versions of these addresses.
4503 Previously, the 64-bit versions were favored, meaning that if both 32 and
4505 versions were valid, but not equal, the 64-bit version was used. This was
4506 found to cause some machines to fail. Now, in this case, the 32-bit
4508 is used instead. This now matches the Windows behavior.
4510 Implemented a new mechanism to protect certain I/O ports. Provides
4512 compatibility and protects the standard PC I/O ports from access via AML
4513 code. Adds a new file, hwvalid.c
4515 Fixed a possible extraneous warning message from the FADT support. The
4516 message warns of a 32/64 length mismatch between the legacy and GAS
4517 definitions for a register.
4519 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
4521 made obsolete by the port protection mechanism above. It was previously
4523 to validate the entire address range of an operation region, which could
4525 incorrect if the range included illegal ports, but fields within the
4526 operation region did not actually access those ports. Validation is now
4527 performed on a per-field basis instead of the entire region.
4529 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
4530 Ignored bits must be "preserved" according to the ACPI spec. Usually,
4532 means a read/modify/write when writing to the register. However, for
4534 registers, writing a one means clear the event. Writing a zero means
4536 the event (do not clear.) This behavior is clarified in the ACPI 4.0
4538 and the ACPICA code now simply always writes a zero to the ignored bit.
4540 Modified the handling of ignored bits for the PM1 A/B Control Registers.
4542 per the ACPI specification, for the control registers, preserve
4543 (read/modify/write) all bits that are defined as either reserved or
4546 Updated the handling of write-only bits in the PM1 A/B Control Registers.
4547 When reading the register, zero the write-only bits as per the ACPI spec.
4548 ACPICA BZ 443. Lin Ming.
4550 Removed "Linux" from the list of supported _OSI strings. Linux no longer
4551 wants to reply true to this request. The Windows strings are the only
4553 through the AML that are tested and known to work properly.
4556 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4557 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4559 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4560 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4562 2) iASL Compiler/Disassembler and Tools:
4564 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
4568 ----------------------------------------
4569 20 February 2009. Summary of changes for version 20090220:
4571 1) ACPI CA Core Subsystem:
4573 Optimized the ACPI register locking. Removed locking for reads from the
4575 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
4577 not required when reading the single-bit registers. The
4578 AcpiGetRegisterUnlocked function is no longer needed and has been
4580 This will improve performance for reads on these registers. ACPICA BZ
4583 Fixed the parameter validation for AcpiRead/Write. Now return
4584 AE_BAD_PARAMETER if the input register pointer is null, and
4587 the register has an address of zero. Previously, these cases simply
4589 AE_OK. For optional registers such as PM1B status/enable/control, the
4591 should check for a valid register address before calling. ACPICA BZ 748.
4593 Renamed the external ACPI bit register access functions. Renamed
4594 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
4595 functions. The new names are AcpiReadBitRegister and
4596 AcpiWriteBitRegister.
4597 Also, restructured the code for these functions by simplifying the code
4599 and condensing duplicate code to reduce code size.
4601 Added new functions to transparently handle the possibly split PM1 A/B
4602 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
4604 now handle the split registers for PM1 Status, Enable, and Control.
4609 Added a function to handle the PM1 control registers,
4610 AcpiHwWritePm1Control.
4611 This function writes both of the PM1 control registers (A/B). These
4613 are different than the PM1 A/B status and enable registers in that
4615 values can be written to the A/B registers. Most notably, the SLP_TYP
4617 can be different, as per the values returned from the _Sx predefined
4620 Removed an extra register write within AcpiHwClearAcpiStatus. This
4622 was writing an optional PM1B status register twice. The existing call to
4624 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
4626 register. ACPICA BZ 751.
4628 Split out the PM1 Status registers from the FADT. Added new globals for
4630 registers (A/B), similar to the way the PM1 Enable registers are handled.
4631 Instead of overloading the FADT Event Register blocks. This makes the
4633 clearer and less prone to error.
4635 Fixed the warning message for when the platform contains too many ACPI
4637 for the default size of the global root table data structure. The
4639 for the truncation value was incorrect.
4641 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
4642 obsolete macro, since it is now a simple reference to ->common.type.
4644 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
4646 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
4647 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
4648 simply SLEEP_TYPE. ACPICA BZ 754.
4650 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
4651 function is only needed on 64-bit host operating systems and is thus not
4652 included for 32-bit hosts.
4654 Debug output: print the input and result for invocations of the _OSI
4656 control method via the ACPI_LV_INFO debug level. Also, reduced some of
4658 verbosity of this debug level. Len Brown.
4660 Example Code and Data Size: These are the sizes for the OS-independent
4661 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4662 debug version of the code includes the debug output trace mechanism and
4664 much larger code and data size.
4667 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4668 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4670 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4671 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4673 2) iASL Compiler/Disassembler and Tools:
4675 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
4676 various legal performance profiles.
4678 ----------------------------------------
4679 23 January 2009. Summary of changes for version 20090123:
4681 1) ACPI CA Core Subsystem:
4683 Added the 2009 copyright to all module headers and signons. This affects
4684 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4685 the tools/utilities.
4687 Implemented a change to allow the host to override any ACPI table,
4689 dynamically loaded tables. Previously, only the DSDT could be replaced by
4691 host. With this change, the AcpiOsTableOverride interface is called for
4693 table found in the RSDT/XSDT during ACPICA initialization, and also
4695 a table is dynamically loaded via the AML Load operator.
4697 Updated FADT flag definitions, especially the Boot Architecture flags.
4699 Debugger: For the Find command, automatically pad the input ACPI name
4701 underscores if the name is shorter than 4 characters. This enables a
4703 with the actual namespace entry which is itself padded with underscores.
4705 Example Code and Data Size: These are the sizes for the OS-independent
4706 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4707 debug version of the code includes the debug output trace mechanism and
4709 much larger code and data size.
4712 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
4713 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
4715 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4716 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4718 2) iASL Compiler/Disassembler and Tools:
4720 Fix build error under Bison-2.4.
4722 Dissasembler: Enhanced FADT support. Added decoding of the Boot
4724 flags. Now decode all flags, regardless of the FADT version. Flag output
4725 includes the FADT version which first defined each flag.
4727 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
4729 DSDT). Windows only.
4731 ----------------------------------------
4732 04 December 2008. Summary of changes for version 20081204:
4734 1) ACPI CA Core Subsystem:
4736 The ACPICA Programmer Reference has been completely updated and revamped
4738 this release. This includes updates to the external interfaces, OSL
4739 interfaces, the overview sections, and the debugger reference.
4741 Several new ACPICA interfaces have been implemented and documented in the
4742 programmer reference:
4743 AcpiReset - Writes the reset value to the FADT-defined reset register.
4744 AcpiDisableAllGpes - Disable all available GPEs.
4745 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
4746 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
4747 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
4748 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
4749 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
4751 Most of the public ACPI hardware-related interfaces have been moved to a
4753 file, components/hardware/hwxface.c
4755 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
4756 register lengths within the FADT are now used, and the low level ACPI
4757 register access no longer hardcodes the ACPI register lengths. Given that
4758 there may be some risk in actually trusting the FADT register lengths, a
4760 time option was added to fall back to the default hardcoded lengths if
4762 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
4763 option is set to true for now, and a warning is issued if a suspicious
4765 register length is overridden with the default value.
4767 Fixed a reference count issue in NsRepairObject. This problem was
4769 in version 20081031 as part of a fix to repair Buffer objects within
4772 Added semaphore support to the Linux/Unix application OS-services layer
4773 (OSL). ACPICA BZ 448. Lin Ming.
4775 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
4777 be implemented in the OSL, or will binary semaphores be used instead.
4779 Example Code and Data Size: These are the sizes for the OS-independent
4780 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4781 debug version of the code includes the debug output trace mechanism and
4783 much larger code and data size.
4786 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
4787 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
4789 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
4790 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
4792 2) iASL Compiler/Disassembler and Tools:
4794 iASL: Completed the '-e' option to include additional ACPI tables in
4797 aid with disassembly and External statement generation. ACPICA BZ 742.
4801 iASL: Removed the "named object in while loop" error. The compiler cannot
4802 determine how many times a loop will execute. ACPICA BZ 730.
4804 Disassembler: Implemented support for FADT revision 2 (MS extension).
4808 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
4811 ----------------------------------------
4812 31 October 2008. Summary of changes for version 20081031:
4814 1) ACPI CA Core Subsystem:
4816 Restructured the ACPICA header files into public/private. acpi.h now
4818 only the "public" acpica headers. All other acpica headers are "private"
4820 should not be included by acpica users. One new file, accommon.h is used
4822 include the commonly used private headers for acpica code generation.
4824 plans include moving all private headers to a new subdirectory.
4826 Implemented an automatic Buffer->String return value conversion for
4827 predefined ACPI methods. For these methods (such as _BIF), added
4829 conversion for return objects that are required to be a String, but a
4831 was found instead. This can happen when reading string battery data from
4833 operation region, because it used to be difficult to convert the data
4835 buffer to string from within the ASL. Ensures that the host OS is
4837 with a valid null-terminated string. Linux BZ 11822.
4839 Updated the FACS waking vector interfaces. Split
4840 AcpiSetFirmwareWakingVector
4841 into two: one for the 32-bit vector, another for the 64-bit vector. This
4843 required because the host OS must setup the wake much differently for
4845 vector (real vs. protected mode, etc.) and the interface itself should
4848 deciding which vector to use. Also, eliminated the
4849 GetFirmwareWakingVector
4850 interface, as it served no purpose (only the firmware reads the vector,
4852 only writes the vector.) ACPICA BZ 731.
4854 Implemented a mechanism to escape infinite AML While() loops. Added a
4856 counter to force exit from AML While loops if the count becomes too
4858 This can occur in poorly written AML when the hardware does not respond
4859 within a while loop and the loop does not implement a timeout. The
4861 loop count is configurable. A new exception code is returned when a loop
4863 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
4865 Optimized the execution of AML While loops. Previously, a control state
4866 object was allocated and freed for each execution of the loop. The
4867 optimization is to simply reuse the control state for each iteration.
4869 speeds up the raw loop execution time by about 5%.
4871 Enhanced the implicit return mechanism. For Windows compatibility, return
4873 implicit integer of value zero for methods that contain no executable
4875 Such methods are seen in the field as stubs (presumably), and can cause
4876 drivers to fail if they expect a return value. Lin Ming.
4878 Allow multiple backslashes as root prefixes in namepaths. In a fully
4879 qualified namepath, allow multiple backslash prefixes. This can happen
4881 is seen in the field) because of the use of a double-backslash in strings
4882 (since backslash is the escape character) causing confusion. ACPICA BZ
4886 Emit a warning if two different FACS or DSDT tables are discovered in the
4887 FADT. Checks if there are two valid but different addresses for the FACS
4889 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
4891 Consolidated the method argument count validation code. Merged the code
4893 validates control method argument counts into the predefined validation
4894 module. Eliminates possible multiple warnings for incorrect argument
4897 Implemented ACPICA example code. Includes code for ACPICA initialization,
4898 handler installation, and calling a control method. Available at
4899 source/tools/examples.
4901 Added a global pointer for FACS table to simplify internal FACS access.
4903 the global pointer instead of using AcpiGetTableByIndex for each FACS
4905 This simplifies the code for the Global Lock and the Firmware Waking
4908 Example Code and Data Size: These are the sizes for the OS-independent
4909 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4910 debug version of the code includes the debug output trace mechanism and
4912 much larger code and data size.
4915 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
4916 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
4918 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
4919 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
4921 2) iASL Compiler/Disassembler and Tools:
4923 iASL: Improved disassembly of external method calls. Added the -e option
4925 allow the inclusion of additional ACPI tables to help with the
4928 method invocations and the generation of external declarations during the
4929 disassembly. Certain external method invocations cannot be disassembled
4930 properly without the actual declaration of the method. Use the -e option
4932 include the table where the external method(s) are actually declared.
4934 useful for disassembling SSDTs that make method calls back to the master
4935 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
4937 -e dsdt.aml ssdt1.aml
4939 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
4940 problem where the use of an alias within a namepath would result in a not
4941 found error or cause the compiler to fault. Also now allows forward
4942 references from the Alias operator itself. ACPICA BZ 738.
4944 ----------------------------------------
4945 26 September 2008. Summary of changes for version 20080926:
4947 1) ACPI CA Core Subsystem:
4949 Designed and implemented a mechanism to validate predefined ACPI methods
4951 objects. This code validates the predefined ACPI objects (objects whose
4953 start with underscore) that appear in the namespace, at the time they are
4954 evaluated. The argument count and the type of the returned object are
4955 validated against the ACPI specification. The purpose of this validation
4957 to detect problems with the BIOS-implemented predefined ACPI objects
4959 the results are returned to the ACPI-related drivers. Future enhancements
4961 include actual repair of incorrect return objects where possible. Two new
4962 files are nspredef.c and acpredef.h.
4964 Fixed a fault in the AML parser if a memory allocation fails during the
4966 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
4968 Fixed an issue with implicit return compatibility. This change improves
4970 implicit return mechanism to be more compatible with the MS interpreter.
4972 Ming, ACPICA BZ 349.
4974 Implemented support for zero-length buffer-to-string conversions. Allow
4976 length strings during interpreter buffer-to-string conversions. For
4978 during the ToDecimalString and ToHexString operators, as well as implicit
4979 conversions. Fiodor Suietov, ACPICA BZ 585.
4981 Fixed two possible memory leaks in the error exit paths of
4982 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
4984 similar in that they use a stack of state objects in order to eliminate
4985 recursion. The stack must be fully unwound and deallocated if an error
4986 occurs. Lin Ming. ACPICA BZ 383.
4988 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
4990 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
4991 Moore ACPICA BZ 442.
4993 Removed the obsolete version number in module headers. Removed the
4994 "$Revision" number that appeared in each module header. This version
4996 was useful under SourceSafe and CVS, but has no meaning under git. It is
4998 only incorrect, it could also be misleading.
5000 Example Code and Data Size: These are the sizes for the OS-independent
5001 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5002 debug version of the code includes the debug output trace mechanism and
5004 much larger code and data size.
5007 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5008 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5010 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5011 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5013 ----------------------------------------
5014 29 August 2008. Summary of changes for version 20080829:
5016 1) ACPI CA Core Subsystem:
5018 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5019 Reference. Changes include the elimination of cheating on the Object
5021 for the DdbHandle subtype, addition of a reference class field to
5022 differentiate the various reference types (instead of an AML opcode), and
5024 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5026 Reduce an error to a warning for an incorrect method argument count.
5027 Previously aborted with an error if too few arguments were passed to a
5028 control method via the external ACPICA interface. Now issue a warning
5030 and continue. Handles the case where the method inadvertently declares
5032 many arguments, but does not actually use the extra ones. Applies mainly
5034 the predefined methods. Lin Ming. Linux BZ 11032.
5036 Disallow the evaluation of named object types with no intrinsic value.
5038 AE_TYPE for objects that have no value and therefore evaluation is
5040 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5042 these types were allowed, but an exception would be generated at some
5044 during the evaluation. Now, the error is generated up front.
5046 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5047 (nsnames.c). Fixes a leak in the error exit path.
5049 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5051 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5053 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5056 Removed obsolete and/or unused exception codes from the acexcep.h header.
5057 There is the possibility that certain device drivers may be affected if
5059 use any of these exceptions.
5061 The ACPICA documentation has been added to the public git source tree,
5063 acpica/documents. Included are the ACPICA programmer reference, the iASL
5064 compiler reference, and the changes.txt release logfile.
5066 Example Code and Data Size: These are the sizes for the OS-independent
5067 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5068 debug version of the code includes the debug output trace mechanism and
5070 much larger code and data size.
5073 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5074 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5076 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5077 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5079 2) iASL Compiler/Disassembler and Tools:
5081 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5082 defines _SCP with 3 arguments. Previous versions defined it with only 1
5083 argument. iASL now allows both definitions.
5085 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5087 length subtables when disassembling ACPI tables. Also fixed a couple of
5088 errors where a full 16-bit table type field was not extracted from the
5092 acpisrc: Improve comment counting mechanism for generating source code
5093 statistics. Count first and last lines of multi-line comments as
5095 not comment lines. Handle Linux legal header in addition to standard
5099 ----------------------------------------
5101 29 July 2008. Summary of changes for version 20080729:
5103 1) ACPI CA Core Subsystem:
5105 Fix a possible deadlock in the GPE dispatch. Remove call to
5106 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5108 to acquire the GPE lock but can deadlock since the GPE lock is already
5110 at dispatch time. This code was introduced in version 20060831 as a
5112 to Linux BZ 6881 and has since been removed from Linux.
5114 Add a function to dereference returned reference objects. Examines the
5116 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5118 automatically dereferenced in an attempt to return something useful
5120 reference types cannot be converted into an external ACPI_OBJECT.)
5122 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5124 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5125 subtables for the MADT and one new subtable for the SRAT. Includes
5126 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5128 Specification, June 2008.
5130 Additional error checking for pathname utilities. Add error check after
5132 calls to AcpiNsGetPathnameLength. Add status return from
5133 AcpiNsBuildExternalPath and check after all calls. Add parameter
5135 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5137 Return status from the global init function AcpiUtGlobalInitialize. This
5139 used by both the kernel subsystem and the utilities such as iASL
5141 The function could possibly fail when the caches are initialized. Yang
5144 Add a function to decode reference object types to strings. Created for
5145 improved error messages.
5147 Improve object conversion error messages. Better error messages during
5149 conversion from internal to the external ACPI_OBJECT. Used for external
5151 to AcpiEvaluateObject.
5153 Example Code and Data Size: These are the sizes for the OS-independent
5154 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5155 debug version of the code includes the debug output trace mechanism and
5157 much larger code and data size.
5160 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5161 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5163 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5164 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5166 2) iASL Compiler/Disassembler and Tools:
5168 Debugger: fix a possible hang when evaluating non-methods. Fixes a
5170 introduced in version 20080701. If the object being evaluated (via
5172 command) is not a method, the debugger can hang while trying to obtain
5174 existent parameters.
5176 iASL: relax error for using reserved "_T_x" identifiers. These names can
5177 appear in a disassembled ASL file if they were emitted by the original
5178 compiler. Instead of issuing an error or warning and forcing the user to
5179 manually change these names, issue a remark instead.
5181 iASL: error if named object created in while loop. Emit an error if any
5183 object is created within a While loop. If allowed, this code will
5186 run-time error on the second iteration of the loop when an attempt is
5189 create the same named object twice. ACPICA bugzilla 730.
5191 iASL: Support absolute pathnames for include files. Add support for
5193 pathnames within the Include operator. previously, only relative
5197 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
5199 The ACPI spec requires one interrupt minimum. BZ 423
5201 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
5202 Handles the case for the Interrupt Resource Descriptor where
5203 the ResourceSource argument is omitted but ResourceSourceIndex
5204 is present. Now leave room for the Index. BZ 426
5206 iASL: Prevent error message if CondRefOf target does not exist. Fixes
5208 where an error message is emitted if the target does not exist. BZ 516
5210 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
5211 (get ACPI tables on Windows). This was apparently broken in version
5214 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
5216 the EOF happens immediately after the last table in the input file. Print
5217 completion message. Previously, no message was displayed in this case.
5219 ----------------------------------------
5220 01 July 2008. Summary of changes for version 20080701:
5222 0) Git source tree / acpica.org
5224 Fixed a problem where a git-clone from http would not transfer the entire
5227 1) ACPI CA Core Subsystem:
5229 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
5230 enable bit. Now performs a read-change-write of the enable register
5232 of simply writing out the cached enable mask. This will prevent
5234 enabling of GPEs if a rogue GPE is received during initialization (before
5236 handlers are installed.)
5238 Implemented a copy for dynamically loaded tables. Previously, dynamically
5239 loaded tables were simply mapped - but on some machines this memory is
5240 corrupted after suspend. Now copy the table to a local buffer. For the
5241 OpRegion case, added checksum verify. Use the table length from the table
5242 header, not the region length. For the Buffer case, use the table length
5243 also. Dennis Noordsij, Bob Moore. BZ 10734
5245 Fixed a problem where the same ACPI table could not be dynamically loaded
5247 unloaded more than once. Without this change, a table cannot be loaded
5249 once it has been loaded/unloaded one time. The current mechanism does not
5250 unregister a table upon an unload. During a load, if the same table is
5252 this no longer returns an exception. BZ 722
5254 Fixed a problem where the wrong descriptor length was calculated for the
5255 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
5257 are calculated as 12 bytes long, but the actual length in the internal
5258 descriptor is 16 because of the round-up to 8 on the 64-bit build.
5260 by Linn Crosetto. BZ 728
5262 Fixed a possible memory leak in the Unload operator. The DdbHandle
5264 by Load() did not have its reference count decremented during unload,
5266 to a memory leak. Lin Ming. BZ 727
5268 Fixed a possible memory leak when deleting thermal/processor objects. Any
5269 associated notify handlers (and objects) were not being deleted. Fiodor
5272 Fixed the ordering of the ASCII names in the global mutex table to match
5274 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
5276 Vegard Nossum. BZ 726
5278 Enhanced the AcpiGetObjectInfo interface to return the number of required
5279 arguments if the object is a control method. Added this call to the
5281 so the proper number of default arguments are passed to a method. This
5282 prevents a warning when executing methods from AcpiExec.
5284 Added a check for an invalid handle in AcpiGetObjectInfo. Return
5285 AE_BAD_PARAMETER if input handle is invalid. BZ 474
5287 Fixed an extraneous warning from exconfig.c on the 64-bit build.
5289 Example Code and Data Size: These are the sizes for the OS-independent
5290 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5291 debug version of the code includes the debug output trace mechanism and
5293 much larger code and data size.
5296 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5297 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5299 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5300 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5302 2) iASL Compiler/Disassembler and Tools:
5304 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
5305 resource descriptor names.
5307 iASL: Detect invalid ASCII characters in input (windows version). Removed
5309 "-CF" flag from the flex compile, enables correct detection of non-ASCII
5310 characters in the input. BZ 441
5312 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
5314 "result of operation not used" warning when the DDB handle returned from
5315 LoadTable is not used. The warning is not needed. BZ 590
5317 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
5320 pass address of table to the AML. Added option to disable OpRegion
5322 to allow creation of an OpRegion with a real address that was passed to
5324 All of this allows testing of the Load and Unload operators from
5327 Debugger: update tables command for unloaded tables. Handle unloaded
5329 and use the standard table header output routine.
5331 ----------------------------------------
5332 09 June 2008. Summary of changes for version 20080609:
5334 1) ACPI CA Core Subsystem:
5336 Implemented a workaround for reversed _PRT entries. A significant number
5338 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
5339 change dynamically detects and repairs this problem. Provides
5341 with MS ACPI. BZ 6859
5343 Simplified the internal ACPI hardware interfaces to eliminate the locking
5344 flag parameter from Register Read/Write. Added a new external interface,
5345 AcpiGetRegisterUnlocked.
5347 Fixed a problem where the invocation of a GPE control method could hang.
5349 was a regression introduced in 20080514. The new method argument count
5350 validation mechanism can enter an infinite loop when a GPE method is
5351 dispatched. Problem fixed by removing the obsolete code that passed GPE
5353 information to the notify handler via the control method parameter
5356 Fixed a problem where the _SST execution status was incorrectly returned
5358 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
5360 20080514. _SST is optional and a NOT_FOUND exception should never be
5363 Fixed a problem where a deleted object could be accessed from within the
5365 parser. This was a regression introduced in version 20080123 as a fix for
5367 Unload operator. Lin Ming. BZ 10669
5369 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
5371 and eliminated the use of a negative index in a loop. Operands are now
5372 displayed in the correct order, not backwards. This also fixes a
5374 introduced in 20080514 on 64-bit systems where the elimination of
5375 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
5378 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
5380 path did not delete a locally allocated structure.
5382 Updated definitions for the DMAR and SRAT tables to synchronize with the
5383 current specifications. Includes disassembler support.
5385 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
5386 loop termination value was used. Loop terminated on iteration early,
5388 one mutex. Linn Crosetto
5390 Example Code and Data Size: These are the sizes for the OS-independent
5391 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5392 debug version of the code includes the debug output trace mechanism and
5394 much larger code and data size.
5397 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5398 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5400 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5401 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5403 2) iASL Compiler/Disassembler and Tools:
5405 Disassembler: Implemented support for EisaId() within _CID objects. Now
5406 disassemble integer _CID objects back to EisaId invocations, including
5407 multiple integers within _CID packages. Includes single-step support for
5410 Disassembler: Added support for DMAR and SRAT table definition changes.
5412 ----------------------------------------
5413 14 May 2008. Summary of changes for version 20080514:
5415 1) ACPI CA Core Subsystem:
5417 Fixed a problem where GPEs were enabled too early during the ACPICA
5418 initialization. This could lead to "handler not installed" errors on some
5419 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
5421 ensures that all operation regions and devices throughout the namespace
5423 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
5425 Implemented a change to the enter sleep code. Moved execution of the _GTS
5426 method to just before setting sleep enable bit. The execution was moved
5428 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
5429 immediately before the SLP_EN bit is set, as per the ACPI specification.
5432 Implemented a fix to disable unknown GPEs (2nd version). Now always
5434 the GPE, even if ACPICA thinks that that it is already disabled. It is
5435 possible that the AML or some other code has enabled the GPE unbeknownst
5439 Fixed a problem with the Field operator where zero-length fields would
5441 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
5443 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
5445 Implemented a fix for the Load operator, now load the table at the
5447 root. This reverts a change introduced in version 20071019. The table is
5449 loaded at the namespace root even though this goes against the ACPI
5450 specification. This provides compatibility with other ACPI
5452 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
5455 Fixed a problem where ACPICA would not Load() tables with unusual
5457 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
5458 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
5459 Therefore, signature validation is worthless. Apparently MS ACPI accepts
5461 signatures, ACPICA must be compatible. BZ 10454.
5463 Fixed a possible negative array index in AcpiUtValidateException. Added
5465 fields to the exception string arrays to eliminate a -1 subtraction on
5469 Updated the debug tracking macros to reduce overall code and data size.
5470 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
5471 instead of pointers to static strings. Jan Beulich and Bob Moore.
5473 Implemented argument count checking in control method invocation via
5474 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
5476 many. This applies only to extern programmatic control method execution,
5478 method-to-method calls within the AML. Lin Ming.
5480 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
5482 longer needed, especially with the removal of 16-bit support. It was
5484 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
5487 32/64-bit platforms is required.
5489 Added the C const qualifier for appropriate string constants -- mostly
5490 MODULE_NAME and printf format strings. Jan Beulich.
5492 Example Code and Data Size: These are the sizes for the OS-independent
5493 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5494 debug version of the code includes the debug output trace mechanism and
5496 much larger code and data size.
5499 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5500 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5502 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5503 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5505 2) iASL Compiler/Disassembler and Tools:
5507 Implemented ACPI table revision ID validation in the disassembler. Zero
5509 always invalid. For DSDTs, the ID controls the interpreter integer width.
5511 means 32-bit and this is unusual. 2 or greater is 64-bit.
5513 ----------------------------------------
5514 21 March 2008. Summary of changes for version 20080321:
5516 1) ACPI CA Core Subsystem:
5518 Implemented an additional change to the GPE support in order to suppress
5519 spurious or stray GPEs. The AcpiEvDisableGpe function will now
5521 disable incoming GPEs that are neither enabled nor disabled -- meaning
5523 the GPE is unknown to the system. This should prevent future interrupt
5525 from that GPE. BZ 6217 (Zhang Rui)
5527 Fixed a problem where NULL package elements were not returned to the
5528 AcpiEvaluateObject interface correctly. The element was simply ignored
5529 instead of returning a NULL ACPI_OBJECT package element, potentially
5531 a buffer overflow and/or confusing the caller who expected a fixed number
5533 elements. BZ 10132 (Lin Ming, Bob Moore)
5535 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
5537 Qword), Field, BankField, and IndexField operators when invoked from
5539 an executing control method. In this case, these operators created
5541 nodes that were incorrectly left marked as permanent nodes instead of
5542 temporary nodes. This could cause a problem if there is race condition
5543 between an exiting control method and a running namespace walk. (Reported
5547 Fixed a problem where the CreateField and CreateXXXField operators would
5548 incorrectly allow duplicate names (the name of the field) with no
5552 Implemented several changes for Notify handling. Added support for new
5554 values (ACPI 2.0+) and improved the Notify debug output. Notify on
5555 PowerResource objects is no longer allowed, as per the ACPI
5557 (Bob Moore, Zhang Rui)
5559 All Reference Objects returned via the AcpiEvaluateObject interface are
5561 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
5563 NULL objects - either NULL package elements or unresolved named
5566 Fixed a problem where an extraneous debug message was produced for
5568 objects (when debugging enabled). The message "Package List length larger
5569 than NumElements count" is now produced in the correct case, and is now
5571 error message rather than a debug message. Added a debug message for the
5572 opposite case, where NumElements is larger than the Package List (the
5574 will be padded out with NULL elements as per the ACPI spec.)
5576 Implemented several improvements for the output of the ASL "Debug" object
5578 clarify and keep all data for a given object on one output line.
5580 Fixed two size calculation issues with the variable-length Start
5582 resource descriptor.
5584 Example Code and Data Size: These are the sizes for the OS-independent
5585 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5586 debug version of the code includes the debug output trace mechanism and
5588 a much larger code and data size.
5591 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5592 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5594 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5595 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5597 2) iASL Compiler/Disassembler and Tools:
5599 Fixed a problem with the use of the Switch operator where execution of
5601 containing method by multiple concurrent threads could cause an
5602 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
5603 actual Switch opcode, it must be simulated with local named temporary
5604 variables and if/else pairs. The solution chosen was to mark any method
5606 uses Switch as Serialized, thus preventing multiple thread entries. BZ
5609 ----------------------------------------
5610 13 February 2008. Summary of changes for version 20080213:
5612 1) ACPI CA Core Subsystem:
5614 Implemented another MS compatibility design change for GPE/Notify
5616 GPEs are now cleared/enabled asynchronously to allow all pending notifies
5618 complete first. It is expected that the OSL will queue the enable request
5619 behind all pending notify requests (may require changes to the local host
5621 in AcpiOsExecute). Alexey Starikovskiy.
5623 Fixed a problem where buffer and package objects passed as arguments to a
5624 control method via the external AcpiEvaluateObject interface could cause
5626 AE_AML_INTERNAL exception depending on the order and type of operators
5627 executed by the target control method.
5629 Fixed a problem where resource descriptor size optimization could cause a
5630 problem when a _CRS resource template is passed to a _SRS method. The
5632 resource template must use the same descriptors (with the same size) as
5633 returned from _CRS. This change affects the following resource
5635 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
5638 Fixed a problem where a CopyObject to RegionField, BankField, and
5640 objects did not perform an implicit conversion as it should. These types
5642 retain their initial type permanently as per the ACPI specification.
5644 a CopyObject to all other object types should not perform an implicit
5645 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
5647 Fixed a problem with the AcpiGetDevices interface where the mechanism to
5648 match device CIDs did not examine the entire list of available CIDs, but
5649 instead aborted on the first non-matching CID. Andrew Patterson.
5651 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
5653 inadvertently changed to return a 16-bit value instead of a 32-bit value,
5654 truncating the upper dword of a 64-bit value. This macro is only used to
5655 display debug output, so no incorrect calculations were made. Also,
5656 reimplemented the macro so that a 64-bit shift is not performed by
5657 inefficient compilers.
5659 Added missing va_end statements that should correspond with each va_start
5662 Example Code and Data Size: These are the sizes for the OS-independent
5663 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5664 debug version of the code includes the debug output trace mechanism and
5666 a much larger code and data size.
5669 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5670 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5672 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5673 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5675 2) iASL Compiler/Disassembler and Tools:
5677 Implemented full disassembler support for the following new ACPI tables:
5678 BERT, EINJ, and ERST. Implemented partial disassembler support for the
5679 complicated HEST table. These tables support the Windows Hardware Error
5680 Architecture (WHEA).
5682 ----------------------------------------
5683 23 January 2008. Summary of changes for version 20080123:
5685 1) ACPI CA Core Subsystem:
5687 Added the 2008 copyright to all module headers and signons. This affects
5688 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5689 the tools/utilities.
5691 Fixed a problem with the SizeOf operator when used with Package and
5693 objects. These objects have deferred execution for some arguments, and
5695 execution is now completed before the SizeOf is executed. This problem
5697 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
5701 Implemented an enhancement to the interpreter "slack mode". In the
5704 an explicit return or an implicitly returned object from the last
5706 opcode, a control method will now implicitly return an integer of value 0
5708 Microsoft compatibility. (Lin Ming) BZ 392
5710 Fixed a problem with the Load operator where an exception was not
5713 the case where the table is already loaded. (Lin Ming) BZ 463
5715 Implemented support for the use of DDBHandles as an Indexed Reference, as
5717 the ACPI spec. (Lin Ming) BZ 486
5719 Implemented support for UserTerm (Method invocation) for the Unload
5721 as per the ACPI spec. (Lin Ming) BZ 580
5723 Fixed a problem with the LoadTable operator where the OemId and
5725 input strings could cause unexpected failures if they were shorter than
5727 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
5729 Implemented support for UserTerm (Method invocation) for the Unload
5731 as per the ACPI spec. (Lin Ming) BZ 580
5733 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
5735 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
5737 Example Code and Data Size: These are the sizes for the OS-independent
5738 acpica.lib produced by the Microsoft Visual C++ 6.0 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.
5744 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
5745 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
5747 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5748 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5750 2) iASL Compiler/Disassembler and Tools:
5752 Implemented support in the disassembler for checksum validation on
5754 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
5756 header dump at the start of the disassembly.
5758 Implemented additional debugging information in the namespace listing
5760 created during compilation. In addition to the namespace hierarchy, the
5762 pathname to each namespace object is displayed.
5764 Fixed a problem with the disassembler where invalid ACPI tables could
5766 faults or infinite loops.
5768 Fixed an unexpected parse error when using the optional "parameter types"
5769 list in a control method declaration. (Lin Ming) BZ 397
5771 Fixed a problem where two External declarations with the same name did
5773 cause an error (Lin Ming) BZ 509
5775 Implemented support for full TermArgs (adding Argx, Localx and method
5776 invocation) for the ParameterData parameter to the LoadTable operator.
5780 ----------------------------------------
5781 19 December 2007. Summary of changes for version 20071219:
5783 1) ACPI CA Core Subsystem:
5785 Implemented full support for deferred execution for the TermArg string
5786 arguments for DataTableRegion. This enables forward references and full
5787 operand resolution for the three string arguments. Similar to
5789 deferred argument execution.) Lin Ming. BZ 430
5791 Implemented full argument resolution support for the BankValue argument
5793 BankField. Previously, only constants were supported, now any TermArg may
5795 used. Lin Ming BZ 387, 393
5797 Fixed a problem with AcpiGetDevices where the search of a branch of the
5798 device tree could be terminated prematurely. In accordance with the ACPI
5799 specification, the search down the current branch is terminated if a
5801 is both not present and not functional (instead of just not present.)
5805 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
5807 the underlying AML code changed the GPE enable registers. Now, any
5809 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
5811 instead of simply ignored. Rui Zhang.
5813 Fixed a problem with Index Fields where the Index register was
5815 limited to a maximum of 32 bits. Now any size may be used.
5817 Fixed a couple memory leaks associated with "implicit return" objects
5819 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
5821 Example Code and Data Size: These are the sizes for the OS-independent
5822 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5823 debug version of the code includes the debug output trace mechanism and
5825 a much larger code and data size.
5828 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
5829 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
5831 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
5832 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
5834 ----------------------------------------
5835 14 November 2007. Summary of changes for version 20071114:
5837 1) ACPI CA Core Subsystem:
5839 Implemented event counters for each of the Fixed Events, the ACPI SCI
5840 (interrupt) itself, and control methods executed. Named
5841 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
5843 should be useful for debugging and statistics.
5845 Implemented a new external interface, AcpiGetStatistics, to retrieve the
5846 contents of the various event counters. Returns the current values for
5847 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
5848 AcpiMethodCount. The interface can be expanded in the future if new
5850 are added. Device drivers should use this interface rather than access
5854 Fixed a problem with the FromBCD and ToBCD operators. With some
5856 the ShortDivide function worked incorrectly, causing problems with the
5858 functions with large input values. A truncation from 64-bit to 32-bit
5859 inadvertently occurred. Internal BZ 435. Lin Ming
5861 Fixed a problem with Index references passed as method arguments.
5863 passed as arguments to control methods were dereferenced immediately
5865 control was passed to the called method). The references are now
5867 passed directly to the called method. BZ 5389. Lin Ming
5869 Fixed a problem with CopyObject used in conjunction with the Index
5871 The reference was incorrectly dereferenced before the copy. The reference
5873 now correctly copied. BZ 5391. Lin Ming
5875 Fixed a problem with Control Method references within Package objects.
5877 references are now correctly generated. This completes the package
5878 construction overhaul that began in version 20071019.
5880 Example Code and Data Size: These are the sizes for the OS-independent
5881 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5882 debug version of the code includes the debug output trace mechanism and
5884 a much larger code and data size.
5887 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
5888 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
5890 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
5891 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
5894 2) iASL Compiler/Disassembler and Tools:
5896 The AcpiExec utility now installs handlers for all of the predefined
5897 Operation Region types. New types supported are: PCI_Config, CMOS, and
5900 Fixed a problem with the 64-bit version of AcpiExec where the extended
5902 bit) address fields for the DSDT and FACS within the FADT were not being
5903 used, causing truncation of the upper 32-bits of these addresses. Lin
5907 ----------------------------------------
5908 19 October 2007. Summary of changes for version 20071019:
5910 1) ACPI CA Core Subsystem:
5912 Fixed a problem with the Alias operator when the target of the alias is a
5913 named ASL operator that opens a new scope -- Scope, Device,
5915 Processor, and ThermalZone. In these cases, any children of the original
5916 operator could not be accessed via the alias, potentially causing
5918 AE_NOT_FOUND exceptions. (BZ 9067)
5920 Fixed a problem with the Package operator where all named references were
5921 created as object references and left otherwise unresolved. According to
5923 ACPI specification, a Package can only contain Data Objects or references
5925 control methods. The implication is that named references to Data Objects
5926 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
5927 immediately upon package creation. This is the approach taken with this
5928 change. References to all other named objects (Methods, Devices, Scopes,
5929 etc.) are all now properly created as reference objects. (BZ 5328)
5931 Reverted a change to Notify handling that was introduced in version
5932 20070508. This version changed the Notify handling from asynchronous to
5933 fully synchronous (Device driver Notify handling with respect to the
5935 ASL operator). It was found that this change caused more problems than it
5936 solved and was removed by most users.
5938 Fixed a problem with the Increment and Decrement operators where the type
5940 the target object could be unexpectedly and incorrectly changed. (BZ 353)
5943 Fixed a problem with the Load and LoadTable operators where the table
5944 location within the namespace was ignored. Instead, the table was always
5945 loaded into the root or current scope. Lin Ming.
5947 Fixed a problem with the Load operator when loading a table from a buffer
5948 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
5950 Fixed a problem with the Debug object where a store of a DdbHandle
5952 object to the Debug object could cause a fault.
5954 Added a table checksum verification for the Load operator, in the case
5956 the load is from a buffer. (BZ 578).
5958 Implemented additional parameter validation for the LoadTable operator.
5960 length of the input strings SignatureString, OemIdString, and OemTableId
5962 now checked for maximum lengths. (BZ 582) Lin Ming.
5964 Example Code and Data Size: These are the sizes for the OS-independent
5965 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5966 debug version of the code includes the debug output trace mechanism and
5968 a much larger code and data size.
5971 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
5972 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
5974 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
5975 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
5978 2) iASL Compiler/Disassembler:
5980 Fixed a problem where if a single file was specified and the file did not
5981 exist, no error message was emitted. (Introduced with wildcard support in
5984 ----------------------------------------
5985 19 September 2007. Summary of changes for version 20070919:
5987 1) ACPI CA Core Subsystem:
5989 Designed and implemented new external interfaces to install and remove
5990 handlers for ACPI table-related events. Current events that are defined
5992 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
5993 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
5994 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
5996 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
5997 (acpi_serialized option on Linux) could cause some systems to hang during
5998 initialization. (Bob Moore) BZ 8171
6000 Fixed a problem where objects of certain types (Device, ThermalZone,
6001 Processor, PowerResource) can be not found if they are declared and
6002 referenced from within the same control method (Lin Ming) BZ 341
6004 Example Code and Data Size: These are the sizes for the OS-independent
6005 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6006 debug version of the code includes the debug output trace mechanism and
6008 a much larger code and data size.
6011 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6012 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6014 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6015 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6018 2) iASL Compiler/Disassembler:
6020 Implemented support to allow multiple files to be compiled/disassembled
6023 single invocation. This includes command line wildcard support for both
6025 Windows and Unix versions of the compiler. This feature simplifies the
6026 disassembly and compilation of multiple ACPI tables in a single
6029 ----------------------------------------
6030 08 May 2007. Summary of changes for version 20070508:
6032 1) ACPI CA Core Subsystem:
6034 Implemented a Microsoft compatibility design change for the handling of
6036 Notify AML operator. Previously, notify handlers were dispatched and
6037 executed completely asynchronously in a deferred thread. The new design
6038 still executes the notify handlers in a different thread, but the
6040 thread that executed the Notify() now waits at a synchronization point
6042 the notify handler to complete. Some machines depend on a synchronous
6044 operator in order to operate correctly.
6046 Implemented support to allow Package objects to be passed as method
6047 arguments to the external AcpiEvaluateObject interface. Previously, this
6048 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6049 implemented since there were no reserved control methods that required it
6052 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6054 contained invalid non-zero values in reserved fields could cause later
6055 failures because these fields have meaning in later revisions of the
6057 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6059 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6061 Fixed a problem where the Global Lock handle was not properly updated if
6063 thread that acquired the Global Lock via executing AML code then
6065 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6069 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6070 could be corrupted if the interrupt being removed was at the head of the
6071 list. Reported by Linn Crosetto.
6073 Example Code and Data Size: These are the sizes for the OS-independent
6074 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6075 debug version of the code includes the debug output trace mechanism and
6077 a much larger code and data size.
6080 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6081 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6083 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6084 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6086 ----------------------------------------
6087 20 March 2007. Summary of changes for version 20070320:
6089 1) ACPI CA Core Subsystem:
6091 Implemented a change to the order of interpretation and evaluation of AML
6092 operand objects within the AML interpreter. The interpreter now evaluates
6093 operands in the order that they appear in the AML stream (and the
6094 corresponding ASL code), instead of in the reverse order (after the
6096 operand list has been parsed). The previous behavior caused several
6098 incompatibilities with the Microsoft AML interpreter as well as being
6099 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6101 Implemented a change to the ACPI Global Lock support. All interfaces to
6103 global lock now allow the same thread to acquire the lock multiple times.
6104 This affects the AcpiAcquireGlobalLock external interface to the global
6106 as well as the internal use of the global lock to support AML fields -- a
6107 control method that is holding the global lock can now simultaneously
6109 AML fields that require global lock protection. Previously, in both
6111 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6113 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6114 Controller. There is no change to the behavior of the AML Acquire
6116 as this can already be used to acquire a mutex multiple times by the same
6117 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6119 Fixed a problem where invalid objects could be referenced in the AML
6120 Interpreter after error conditions. During operand evaluation, ensure
6122 the internal "Return Object" field is cleared on error and only valid
6123 pointers are stored there. Caused occasional access to deleted objects
6125 resulted in "large reference count" warning messages. Valery Podrezov.
6127 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6129 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6132 Fixed an internal problem with the handling of result objects on the
6133 interpreter result stack. BZ 7872. Valery Podrezov.
6135 Removed obsolete code that handled the case where AML_NAME_OP is the
6137 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6138 7874. Valery Podrezov.
6140 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6143 remnant from the previously discontinued 16-bit support.
6145 Example Code and Data Size: These are the sizes for the OS-independent
6146 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6147 debug version of the code includes the debug output trace mechanism and
6149 a much larger code and data size.
6152 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6153 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6155 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6156 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6158 ----------------------------------------
6159 26 January 2007. Summary of changes for version 20070126:
6161 1) ACPI CA Core Subsystem:
6163 Added the 2007 copyright to all module headers and signons. This affects
6164 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6167 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
6168 during a table load. A bad pointer was passed in the case where the DSDT
6170 overridden, causing a fault in this case.
6172 Example Code and Data Size: These are the sizes for the OS-independent
6173 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6174 debug version of the code includes the debug output trace mechanism and
6176 a much larger code and data size.
6179 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6180 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6182 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6183 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6185 ----------------------------------------
6186 15 December 2006. Summary of changes for version 20061215:
6188 1) ACPI CA Core Subsystem:
6190 Support for 16-bit ACPICA has been completely removed since it is no
6192 necessary and it clutters the code. All 16-bit macros, types, and
6193 conditional compiles have been removed, cleaning up and simplifying the
6195 across the entire subsystem. DOS support is no longer needed since the
6196 bootable Linux firmware kit is now available.
6198 The handler for the Global Lock is now removed during AcpiTerminate to
6199 enable a clean subsystem restart, via the implementation of the
6200 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
6203 Implemented enhancements to the multithreading support within the
6205 to enable improved multithreading debugging and evaluation of the
6209 Debugger: Enhanced the Statistics/Memory command to emit the total
6211 memory used during the execution, as well as the maximum memory consumed
6213 each of the various object types. (Valery Podrezov)
6215 Example Code and Data Size: These are the sizes for the OS-independent
6216 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6217 debug version of the code includes the debug output trace mechanism and
6219 a much larger code and data size.
6222 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6223 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6225 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6226 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6229 2) iASL Compiler/Disassembler and Tools:
6231 AcpiExec: Implemented a new option (-m) to display full memory use
6232 statistics upon subsystem/program termination. (Valery Podrezov)
6234 ----------------------------------------
6235 09 November 2006. Summary of changes for version 20061109:
6237 1) ACPI CA Core Subsystem:
6239 Optimized the Load ASL operator in the case where the source operand is
6241 operation region. Simply map the operation region memory, instead of
6242 performing a bytewise read. (Region must be of type SystemMemory, see
6245 Fixed the Load ASL operator for the case where the source operand is a
6246 region field. A buffer object is also allowed as the source operand. BZ
6249 Fixed a problem where the Load ASL operator allowed the source operand to
6251 an operation region of any type. It is now restricted to regions of type
6252 SystemMemory, as per the ACPI specification. BZ 481
6254 Additional cleanup and optimizations for the new Table Manager code.
6256 AcpiEnable will now fail if all of the required ACPI tables are not
6258 (FADT, FACS, DSDT). BZ 477
6260 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
6262 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
6263 manually optimized to be aligned and will not work if it is byte-packed.
6265 Example Code and Data Size: These are the sizes for the OS-independent
6266 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6267 debug version of the code includes the debug output trace mechanism and
6269 a much larger code and data size.
6272 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6273 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6275 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6276 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6279 2) iASL Compiler/Disassembler and Tools:
6281 Fixed a problem where the presence of the _OSI predefined control method
6282 within complex expressions could cause an internal compiler error.
6284 AcpiExec: Implemented full region support for multiple address spaces.
6285 SpaceId is now part of the REGION object. BZ 429
6287 ----------------------------------------
6288 11 October 2006. Summary of changes for version 20061011:
6290 1) ACPI CA Core Subsystem:
6292 Completed an AML interpreter performance enhancement for control method
6293 execution. Previously a 2-pass parse/execution, control methods are now
6294 completely parsed and executed in a single pass. This improves overall
6295 interpreter performance by ~25%, reduces code size, and reduces CPU stack
6296 use. (Valery Podrezov + interpreter changes in version 20051202 that
6297 eliminated namespace loading during the pass one parse.)
6299 Implemented _CID support for PCI Root Bridge detection. If the _HID does
6301 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
6303 obtained and also checked for an ID match.
6305 Implemented additional support for the PCI _ADR execution: upsearch until
6307 device scope is found before executing _ADR. This allows PCI_Config
6308 operation regions to be declared locally within control methods
6312 Fixed a problem with a possible race condition between threads executing
6313 AcpiWalkNamespace and the AML interpreter. This condition was removed by
6314 modifying AcpiWalkNamespace to (by default) ignore all temporary
6316 entries created during any concurrent control method execution. An
6317 additional namespace race condition is known to exist between
6318 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
6321 Restructured the AML ParseLoop function, breaking it into several
6322 subfunctions in order to reduce CPU stack use and improve
6326 AcpiGetHandle: Fix for parameter validation to detect invalid
6328 of prefix handle and pathname. BZ 478
6330 Example Code and Data Size: These are the sizes for the OS-independent
6331 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6332 debug version of the code includes the debug output trace mechanism and
6334 a much larger code and data size.
6337 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6338 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6340 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6341 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6343 2) iASL Compiler/Disassembler and Tools:
6345 Ported the -g option (get local ACPI tables) to the new ACPICA Table
6347 to restore original behavior.
6349 ----------------------------------------
6350 27 September 2006. Summary of changes for version 20060927:
6352 1) ACPI CA Core Subsystem:
6354 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
6355 These functions now use a spinlock for mutual exclusion and the interrupt
6356 level indication flag is not needed.
6358 Fixed a problem with the Global Lock where the lock could appear to be
6359 obtained before it is actually obtained. The global lock semaphore was
6360 inadvertently created with one unit instead of zero units. (BZ 464)
6364 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
6366 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
6368 Example Code and Data Size: These are the sizes for the OS-independent
6369 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6370 debug version of the code includes the debug output trace mechanism and
6372 a much larger code and data size.
6375 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6376 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6378 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6379 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6382 2) iASL Compiler/Disassembler and Tools:
6384 Fixed a compilation problem with the pre-defined Resource Descriptor
6386 names where an "object does not exist" error could be incorrectly
6388 if the parent ResourceTemplate pathname places the template within a
6389 different namespace scope than the current scope. (BZ 7212)
6391 Fixed a problem where the compiler could hang after syntax errors
6393 in an ElseIf construct. (BZ 453)
6395 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
6396 operator. An incorrect output filename was produced when this parameter
6398 a null string (""). Now, the original input filename is used as the AML
6399 output filename, with an ".aml" extension.
6401 Implemented a generic batch command mode for the AcpiExec utility
6403 any AML debugger command) (Valery Podrezov).
6405 ----------------------------------------
6406 12 September 2006. Summary of changes for version 20060912:
6408 1) ACPI CA Core Subsystem:
6410 Enhanced the implementation of the "serialized mode" of the interpreter
6411 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
6412 specified, instead of creating a serialization semaphore per control
6414 the interpreter lock is simply no longer released before a blocking
6415 operation during control method execution. This effectively makes the AML
6416 Interpreter single-threaded. The overhead of a semaphore per-method is
6419 Fixed a regression where an error was no longer emitted if a control
6421 attempts to create 2 objects of the same name. This once again returns
6422 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
6424 will dynamically serialize the control method to possible prevent future
6427 Integrated a fix for a problem with PCI Express HID detection in the PCI
6428 Config Space setup procedure. (BZ 7145)
6430 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
6431 AcpiHwInitialize function - the FADT registers are now validated when the
6434 Added two new warnings during FADT verification - 1) if the FADT is
6436 than the largest known FADT version, and 2) if there is a mismatch
6439 32-bit block address and the 64-bit X counterpart (when both are non-
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 a much larger code and data size.
6449 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6450 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6452 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6453 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6456 2) iASL Compiler/Disassembler and Tools:
6458 Fixed a problem with the implementation of the Switch() operator where
6460 temporary variable was declared too close to the actual Switch, instead
6462 at method level. This could cause a problem if the Switch() operator is
6463 within a while loop, causing an error on the second iteration. (BZ 460)
6465 Disassembler - fix for error emitted for unknown type for target of scope
6466 operator. Now, ignore it and continue.
6468 Disassembly of an FADT now verifies the input FADT and reports any errors
6469 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
6471 Disassembly of raw data buffers with byte initialization data now
6473 each output line with the current buffer offset.
6475 Disassembly of ASF! table now includes all variable-length data fields at
6476 the end of some of the subtables.
6478 The disassembler now emits a comment if a buffer appears to be a
6479 ResourceTemplate, but cannot be disassembled as such because the EndTag
6481 not appear at the very end of the buffer.
6483 AcpiExec - Added the "-t" command line option to enable the serialized
6485 of the AML interpreter.
6487 ----------------------------------------
6488 31 August 2006. Summary of changes for version 20060831:
6490 1) ACPI CA Core Subsystem:
6492 Miscellaneous fixes for the Table Manager:
6493 - Correctly initialize internal common FADT for all 64-bit "X" fields
6494 - Fixed a couple table mapping issues during table load
6495 - Fixed a couple alignment issues for IA64
6496 - Initialize input array to zero in AcpiInitializeTables
6497 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
6500 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
6502 immediately disabled to prevent the waking GPE from firing again and to
6503 prevent other wake GPEs from interrupting the wake process.
6505 Added the AcpiGpeCount global that tracks the number of processed GPEs,
6507 be used for debugging systems with a large number of ACPI interrupts.
6509 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
6510 both the ACPICA headers and the disassembler.
6512 Example Code and Data Size: These are the sizes for the OS-independent
6513 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6514 debug version of the code includes the debug output trace mechanism and
6516 a much larger code and data size.
6519 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6520 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6522 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6523 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6526 2) iASL Compiler/Disassembler and Tools:
6528 Disassembler support for the DMAR ACPI table.
6530 ----------------------------------------
6531 23 August 2006. Summary of changes for version 20060823:
6533 1) ACPI CA Core Subsystem:
6535 The Table Manager component has been completely redesigned and
6536 reimplemented. The new design is much simpler, and reduces the overall
6538 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
6540 now possible to obtain the ACPI tables very early during kernel
6541 initialization, even before dynamic memory management is initialized.
6542 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
6544 Obsolete ACPICA interfaces:
6546 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
6549 - AcpiLoadTable: Not needed.
6550 - AcpiUnloadTable: Not needed.
6552 New ACPICA interfaces:
6554 - AcpiInitializeTables: Must be called before the table manager can be
6556 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
6557 allocated memory after it becomes available.
6558 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
6562 Other ACPICA changes:
6564 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
6566 AcpiOsUnmapMemory to free this mapping.
6567 - AcpiGetTable returns the actual mapped table. The mapping is managed
6568 internally and must not be deleted by the caller. Use of this interface
6569 causes no additional dynamic memory allocation.
6570 - AcpiFindRootPointer: Support for physical addressing has been
6572 it appeared to be unused.
6573 - The interface to AcpiOsMapMemory has changed to be consistent with the
6574 other allocation interfaces.
6575 - The interface to AcpiOsGetRootPointer has changed to eliminate
6578 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
6580 bit platforms. Was previously 64 bits on all platforms.
6581 - The interface to the ACPI Global Lock acquire/release macros have
6583 slightly since ACPICA no longer keeps a local copy of the FACS with a
6584 constructed pointer to the actual global lock.
6586 Porting to the new table manager:
6588 - AcpiInitializeTables: Must be called once, and can be called anytime
6589 during the OS initialization process. It allows the host to specify an
6591 of memory to be used to store the internal version of the RSDT/XSDT (root
6592 table). This allows the host to access ACPI tables before memory
6594 is initialized and running.
6595 - AcpiReallocateRootTable: Can be called after memory management is
6597 to copy the root table to a dynamically allocated array, freeing up the
6598 scratch memory specified in the call to AcpiInitializeTables.
6599 - AcpiSubsystemInitialize: This existing interface is independent of the
6600 Table Manager, and does not have to be called before the Table Manager
6602 be used, it only must be called before the rest of ACPICA can be used.
6603 - ACPI Tables: Some changes have been made to the names and structure of
6605 actbl.h and actbl1.h header files and may require changes to existing
6607 For example, bitfields have been completely removed because of their lack
6609 portability across C compilers.
6610 - Update interfaces to the Global Lock acquire/release macros if local
6611 versions are used. (see acwin.h)
6613 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
6617 Example Code and Data Size: These are the sizes for the OS-independent
6618 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6619 debug version of the code includes the debug output trace mechanism and
6621 a much larger code and data size.
6624 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6625 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6627 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6628 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6631 2) iASL Compiler/Disassembler and Tools:
6633 No changes for this release.
6635 ----------------------------------------
6636 21 July 2006. Summary of changes for version 20060721:
6638 1) ACPI CA Core Subsystem:
6640 The full source code for the ASL test suite used to validate the iASL
6641 compiler and the ACPICA core subsystem is being released with the ACPICA
6642 source for the first time. The source is contained in a separate package
6644 consists of over 1100 files that exercise all ASL/AML operators. The
6646 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
6650 Completed a new design and implementation for support of the ACPI Global
6651 Lock. On the OS side, the global lock is now treated as a standard AML
6652 mutex. Previously, multiple OS threads could "acquire" the global lock
6653 simultaneously. However, this could cause the BIOS to be starved out of
6655 lock - especially in cases such as the Embedded Controller driver where
6656 there is a tight coupling between the OS and the BIOS.
6658 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
6659 The Global Lock interrupt handler no longer queues the execution of a
6660 separate thread to signal the global lock semaphore. Instead, the
6662 is signaled directly from the interrupt handler.
6664 Implemented support within the AML interpreter for package objects that
6665 contain a larger AML length (package list length) than the package
6667 count. In this case, the length of the package is truncated to match the
6668 package element count. Some BIOS code apparently modifies the package
6670 on the fly, and this change supports this behavior. Provides
6672 with the MS AML interpreter. (With assistance from Fiodor Suietov)
6674 Implemented a temporary fix for the BankValue parameter of a Bank Field
6676 support all constant values, now including the Zero and One opcodes.
6677 Evaluation of this parameter must eventually be converted to a full
6679 evaluation. A not-implemented error is now returned (temporarily) for
6681 constant values for this parameter.
6683 Fixed problem reports (Fiodor Suietov) integrated:
6684 - Fix for premature object deletion after CopyObject on Operation Region
6688 Example Code and Data Size: These are the sizes for the OS-independent
6689 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6690 debug version of the code includes the debug output trace mechanism and
6692 a much larger code and data size.
6695 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
6696 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
6698 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6699 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6702 2) iASL Compiler/Disassembler and Tools:
6704 No changes for this release.
6706 ----------------------------------------
6707 07 July 2006. Summary of changes for version 20060707:
6709 1) ACPI CA Core Subsystem:
6711 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
6712 that do not allow the initialization of address pointers within packed
6713 structures - even though the hardware itself may support misaligned
6714 transfers. Some of the debug data structures are packed by default to
6717 Added an error message for the case where AcpiOsGetThreadId() returns
6719 A non-zero value is required by the core ACPICA code to ensure the proper
6720 operation of AML mutexes and recursive control methods.
6722 The DSDT is now the only ACPI table that determines whether the AML
6723 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
6725 the hooks for per-table 32/64 switching have been removed from the code.
6727 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
6729 Fixed a possible leak of an OwnerID in the error path of
6730 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
6731 deletion to a single place in AcpiTbUninstallTable to correct possible
6733 when using the AcpiTbDeleteTablesByType interface (with assistance from
6736 Fixed a problem with Serialized control methods where the semaphore
6737 associated with the method could be over-signaled after multiple method
6740 Fixed two issues with the locking of the internal namespace data
6742 Both the Unload() operator and AcpiUnloadTable interface now lock the
6743 namespace during the namespace deletion associated with the table unload
6744 (with assistance from Linn Crosetto.)
6746 Fixed problem reports (Valery Podrezov) integrated:
6747 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
6749 Fixed problem reports (Fiodor Suietov) integrated:
6750 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
6751 - On Address Space handler deletion, needless deactivation call (BZ 374)
6752 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
6754 - Possible memory leak, Notify sub-objects of Processor, Power,
6757 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
6758 - Minimum Length of RSDT should be validated (BZ 379)
6759 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
6761 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
6765 Example Code and Data Size: These are the sizes for the OS-independent
6766 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6767 debug version of the code includes the debug output trace mechanism and
6769 a much larger code and data size.
6772 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
6773 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
6775 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6776 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6779 2) iASL Compiler/Disassembler and Tools:
6781 Fixed problem reports:
6782 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
6785 ----------------------------------------
6786 23 June 2006. Summary of changes for version 20060623:
6788 1) ACPI CA Core Subsystem:
6790 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
6791 allows the type to be customized to the host OS for improved efficiency
6792 (since a spinlock is usually a very small object.)
6794 Implemented support for "ignored" bits in the ACPI registers. According
6796 the ACPI specification, these bits should be preserved when writing the
6797 registers via a read/modify/write cycle. There are 3 bits preserved in
6799 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
6801 Implemented the initial deployment of new OSL mutex interfaces. Since
6803 host operating systems have separate mutex and semaphore objects, this
6804 feature was requested. The base code now uses mutexes (and the new mutex
6805 interfaces) wherever a binary semaphore was used previously. However, for
6806 the current release, the mutex interfaces are defined as macros to map
6808 to the existing semaphore interfaces. Therefore, no OSL changes are
6810 at this time. (See acpiosxf.h)
6812 Fixed several problems with the support for the control method SyncLevel
6813 parameter. The SyncLevel now works according to the ACPI specification
6815 in concert with the Mutex SyncLevel parameter, since the current
6817 is a property of the executing thread. Mutual exclusion for control
6819 is now implemented with a mutex instead of a semaphore.
6821 Fixed three instances of the use of the C shift operator in the bitfield
6822 support code (exfldio.c) to avoid the use of a shift value larger than
6824 target data width. The behavior of C compilers is undefined in this case
6826 can cause unpredictable results, and therefore the case must be detected
6828 avoided. (Fiodor Suietov)
6830 Added an info message whenever an SSDT or OEM table is loaded dynamically
6831 via the Load() or LoadTable() ASL operators. This should improve
6833 capability since it will show exactly what tables have been loaded
6835 the tables present in the RSDT/XSDT.)
6837 Example Code and Data Size: These are the sizes for the OS-independent
6838 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6839 debug version of the code includes the debug output trace mechanism and
6841 a much larger code and data size.
6844 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
6845 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
6847 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
6848 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
6851 2) iASL Compiler/Disassembler and Tools:
6853 No changes for this release.
6855 ----------------------------------------
6856 08 June 2006. Summary of changes for version 20060608:
6858 1) ACPI CA Core Subsystem:
6860 Converted the locking mutex used for the ACPI hardware to a spinlock.
6862 change should eliminate all problems caused by attempting to acquire a
6863 semaphore at interrupt level, and it means that all ACPICA external
6864 interfaces that directly access the ACPI hardware can be safely called
6866 interrupt level. OSL code that implements the semaphore interfaces should
6868 able to eliminate any workarounds for being called at interrupt level.
6870 Fixed a regression introduced in 20060526 where the ACPI device
6871 initialization could be prematurely aborted with an AE_NOT_FOUND if a
6873 did not have an optional _INI method.
6875 Fixed an IndexField issue where a write to the Data Register should be
6876 limited in size to the AccessSize (width) of the IndexField itself. (BZ
6880 Fixed problem reports (Valery Podrezov) integrated:
6881 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
6883 Fixed problem reports (Fiodor Suietov) integrated:
6884 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
6886 Removed four global mutexes that were obsolete and were no longer being
6889 Example Code and Data Size: These are the sizes for the OS-independent
6890 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6891 debug version of the code includes the debug output trace mechanism and
6893 a much larger code and data size.
6896 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
6897 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
6899 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
6900 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
6903 2) iASL Compiler/Disassembler and Tools:
6905 Fixed a fault when using -g option (get tables from registry) on Windows
6908 Fixed problem reports integrated:
6909 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
6910 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
6912 - Global table revision override (-r) is ignored (BZ 413)
6914 ----------------------------------------
6915 26 May 2006. Summary of changes for version 20060526:
6917 1) ACPI CA Core Subsystem:
6919 Restructured, flattened, and simplified the internal interfaces for
6920 namespace object evaluation - resulting in smaller code, less CPU stack
6922 and fewer interfaces. (With assistance from Mikhail Kouzmich)
6924 Fixed a problem with the CopyObject operator where the first parameter
6926 not typed correctly for the parser, interpreter, compiler, and
6928 Caused various errors and unexpected behavior.
6930 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
6931 produced incorrect results with some C compilers. Since the behavior of C
6932 compilers when the shift value is larger than the datatype width is
6933 apparently not well defined, the interpreter now detects this condition
6935 simply returns zero as expected in all such cases. (BZ 395)
6937 Fixed problem reports (Valery Podrezov) integrated:
6938 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
6939 - Allow interpreter to handle nested method declarations (BZ 5361)
6941 Fixed problem reports (Fiodor Suietov) integrated:
6942 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
6944 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
6946 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
6947 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
6948 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
6949 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
6950 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
6951 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
6952 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
6954 - Status of the Global Initialization Handler call not used (BZ 366)
6955 - Incorrect object parameter to Global Initialization Handler (BZ 367)
6957 Example Code and Data Size: These are the sizes for the OS-independent
6958 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6959 debug version of the code includes the debug output trace mechanism and
6961 a much larger code and data size.
6964 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
6965 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
6967 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
6968 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
6971 2) iASL Compiler/Disassembler and Tools:
6973 Modified the parser to allow the names IO, DMA, and IRQ to be used as
6974 namespace identifiers with no collision with existing resource descriptor
6975 macro names. This provides compatibility with other ASL compilers and is
6976 most useful for disassembly/recompilation of existing tables without
6978 errors. (With assistance from Thomas Renninger)
6980 Disassembler: fixed an incorrect disassembly problem with the
6981 DataTableRegion and CopyObject operators. Fixed a possible fault during
6982 disassembly of some Alias operators.
6984 ----------------------------------------
6985 12 May 2006. Summary of changes for version 20060512:
6987 1) ACPI CA Core Subsystem:
6989 Replaced the AcpiOsQueueForExecution interface with a new interface named
6990 AcpiOsExecute. The major difference is that the new interface does not
6992 a Priority parameter, this appeared to be useless and has been replaced
6995 Type parameter. The Type tells the host what type of execution is being
6996 requested, such as global lock handler, notify handler, GPE handler, etc.
6997 This allows the host to queue and execute the request as appropriate for
6999 request type, possibly using different work queues and different
7001 for the various request types. This enables fixes for multithreading
7002 deadlock problems such as BZ #5534, and will require changes to all
7004 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7006 Fixed a possible memory leak associated with the support for the so-
7008 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7011 Fixed a problem with the Load() operator where a table load from an
7012 operation region could overwrite an internal table buffer by up to 7
7014 and cause alignment faults on IPF systems. (With assistance from Luming
7017 Example Code and Data Size: These are the sizes for the OS-independent
7018 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7019 debug version of the code includes the debug output trace mechanism and
7021 a much larger code and data size.
7024 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7025 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7027 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7028 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7032 2) iASL Compiler/Disassembler and Tools:
7034 Disassembler: Implemented support to cross reference the internal
7036 and automatically generate ASL External() statements for symbols not
7038 within the current table being disassembled. This will simplify the
7039 disassembly and recompilation of interdependent tables such as SSDTs
7041 these statements will no longer have to be added manually.
7043 Disassembler: Implemented experimental support to automatically detect
7044 invocations of external control methods and generate appropriate
7046 statements. This is problematic because the AML cannot be correctly
7048 until the number of arguments for each control method is known.
7050 standalone method invocations and invocations as the source operand of a
7051 Store() statement are supported.
7053 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7054 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7055 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7056 more readable and likely closer to the original ASL source.
7058 ----------------------------------------
7059 21 April 2006. Summary of changes for version 20060421:
7061 1) ACPI CA Core Subsystem:
7063 Removed a device initialization optimization introduced in 20051216 where
7064 the _STA method was not run unless an _INI was also present for the same
7065 device. This optimization could cause problems because it could allow
7067 methods to be run within a not-present device subtree. (If a not-present
7068 device had no _INI, _STA would not be run, the not-present status would
7070 be discovered, and the children of the device would be incorrectly
7073 Implemented a new _STA optimization where namespace subtrees that do not
7074 contain _INI are identified and ignored during device initialization.
7075 Selectively running _STA can significantly improve boot time on large
7076 machines (with assistance from Len Brown.)
7078 Implemented support for the device initialization case where the returned
7079 _STA flags indicate a device not-present but functioning. In this case,
7081 is not run, but the device children are examined for presence, as per the
7084 Implemented an additional change to the IndexField support in order to
7085 conform to MS behavior. The value written to the Index Register is not
7086 simply a byte offset, it is a byte offset in units of the access width of
7087 the parent Index Field. (Fiodor Suietov)
7089 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7090 interface is called during the creation of all AML operation regions, and
7091 allows the host OS to exert control over what addresses it will allow the
7092 AML code to access. Operation Regions whose addresses are disallowed will
7093 cause a runtime exception when they are actually accessed (will not
7095 or abort table loading.) See oswinxf or osunixxf for an example
7098 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7099 interface allows the host OS to match the various "optional"
7100 interface/behavior strings for the _OSI predefined control method as
7101 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7102 for an example implementation.
7104 Restructured and corrected various problems in the exception handling
7106 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7107 (with assistance from Takayoshi Kochi.)
7109 Modified the Linux source converter to ignore quoted string literals
7111 converting identifiers from mixed to lower case. This will correct
7113 with the disassembler and other areas where such strings must not be
7116 The ACPI_FUNCTION_* macros no longer require quotes around the function
7117 name. This allows the Linux source converter to convert the names, now
7119 the converter ignores quoted strings.
7121 Example Code and Data Size: These are the sizes for the OS-independent
7122 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7123 debug version of the code includes the debug output trace mechanism and
7125 a much larger code and data size.
7129 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7130 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7132 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7133 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7136 2) iASL Compiler/Disassembler and Tools:
7138 Implemented 3 new warnings for iASL, and implemented multiple warning
7142 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7144 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7145 check for the possible timeout, a warning is issued.
7147 2) Useless operators: If an ASL operator does not specify an optional
7149 operand and it also does not use the function return value from the
7150 operator, a warning is issued since the operator effectively does
7153 3) Unreferenced objects: If a namespace object is created, but never
7154 referenced, a warning is issued. This is a warning level 2 since there
7156 cases where this is ok, such as when a secondary table is loaded that
7158 the unreferenced objects. Even so, care is taken to only flag objects
7160 don't look like they will ever be used. For example, the reserved methods
7161 (starting with an underscore) are usually not referenced because it is
7162 expected that the OS will invoke them.
7164 ----------------------------------------
7165 31 March 2006. Summary of changes for version 20060331:
7167 1) ACPI CA Core Subsystem:
7169 Implemented header file support for the following additional ACPI tables:
7170 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
7172 all current and known ACPI tables are now defined in the ACPICA headers
7174 are available for use by device drivers and other software.
7176 Implemented support to allow tables that contain ACPI names with invalid
7177 characters to be loaded. Previously, this would cause the table load to
7178 fail, but since there are several known cases of such tables on existing
7179 machines, this change was made to enable ACPI support for them. Also,
7181 matches the behavior of the Microsoft ACPI implementation.
7183 Fixed a couple regressions introduced during the memory optimization in
7185 20060317 release. The namespace node definition required additional
7186 reorganization and an internal datatype that had been changed to 8-bit
7188 restored to 32-bit. (Valery Podrezov)
7190 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
7191 could be passed through to AcpiOsReleaseObject which is unexpected. Such
7192 null pointers are now trapped and ignored, matching the behavior of the
7193 previous implementation before the deployment of AcpiOsReleaseObject.
7194 (Valery Podrezov, Fiodor Suietov)
7196 Fixed a memory mapping leak during the deletion of a SystemMemory
7198 region where a cached memory mapping was not deleted. This became a
7199 noticeable problem for operation regions that are defined within
7201 used control methods. (Dana Meyers)
7203 Reorganized the ACPI table header files into two main files: one for the
7204 ACPI tables consumed by the ACPICA core, and another for the
7206 ACPI tables that are consumed by the drivers and other software. The
7208 FADT definitions were merged into one common section and three different
7209 tables (ACPI 1.0, 1.0+, and 2.0)
7211 Example Code and Data Size: These are the sizes for the OS-independent
7212 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7213 debug version of the code includes the debug output trace mechanism and
7215 a much larger code and data size.
7218 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7219 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7221 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7222 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7225 2) iASL Compiler/Disassembler and Tools:
7227 Disassembler: Implemented support to decode and format all non-AML ACPI
7228 tables (tables other than DSDTs and SSDTs.) This includes the new tables
7229 added to the ACPICA headers, therefore all current and known ACPI tables
7233 Disassembler: The change to allow ACPI names with invalid characters also
7234 enables the disassembly of such tables. Invalid characters within names
7236 changed to '*' to make the name printable; the iASL compiler will still
7237 generate an error for such names, however, since this is an invalid ACPI
7240 Implemented an option for AcpiXtract (-a) to extract all tables found in
7242 input file. The default invocation extracts only the DSDTs and SSDTs.
7244 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
7245 makefile for the AcpiXtract utility.
7247 ----------------------------------------
7248 17 March 2006. Summary of changes for version 20060317:
7250 1) ACPI CA Core Subsystem:
7252 Implemented the use of a cache object for all internal namespace nodes.
7253 Since there are about 1000 static nodes in a typical system, this will
7254 decrease memory use for cache implementations that minimize per-
7256 overhead (such as a slab allocator.)
7258 Removed the reference count mechanism for internal namespace nodes, since
7260 was deemed unnecessary. This reduces the size of each namespace node by
7261 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
7263 and 32 bytes for the 64-bit case.
7265 Optimized several internal data structures to reduce object size on 64-
7267 platforms by packing data within the 64-bit alignment. This includes the
7268 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
7269 instances corresponding to the namespace objects.
7271 Added two new strings for the predefined _OSI method: "Windows 2001.1
7275 Split the allocation tracking mechanism out to a separate file, from
7276 utalloc.c to uttrack.c. This mechanism appears to be only useful for
7277 application-level code. Kernels may wish to not include uttrack.c in
7280 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
7282 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
7285 Code and Data Size: These are the sizes for the acpica.lib produced by
7287 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7289 driver or OSPM code. The debug version of the code includes the debug
7291 trace mechanism and has a much larger code and data size. Note that these
7292 values will vary depending on the efficiency of the compiler and the
7293 compiler options used during generation.
7296 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7297 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7299 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7300 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7303 2) iASL Compiler/Disassembler and Tools:
7305 Implemented an ANSI C version of the acpixtract utility. This version
7307 automatically extract the DSDT and all SSDTs from the input acpidump text
7308 file and dump the binary output to separate files. It can also display a
7309 summary of the input file including the headers for each table found and
7310 will extract any single ACPI table, with any signature. (See
7311 source/tools/acpixtract)
7313 ----------------------------------------
7314 10 March 2006. Summary of changes for version 20060310:
7316 1) ACPI CA Core Subsystem:
7318 Tagged all external interfaces to the subsystem with the new
7319 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
7321 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
7322 macro. The default definition is NULL.
7324 Added the ACPI_THREAD_ID type for the return value from
7326 This allows the host to define this as necessary to simplify kernel
7327 integration. The default definition is ACPI_NATIVE_UINT.
7329 Fixed two interpreter problems related to error processing, the deletion
7331 objects, and placing invalid pointers onto the internal operator result
7332 stack. BZ 6028, 6151 (Valery Podrezov)
7334 Increased the reference count threshold where a warning is emitted for
7336 reference counts in order to eliminate unnecessary warnings on systems
7338 large namespaces (especially 64-bit.) Increased the value from 0x400 to
7341 Due to universal disagreement as to the meaning of the 'c' in the
7343 function, the ACPI_MEM_CALLOCATE macro has been renamed to
7344 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
7345 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
7348 Code and Data Size: These are the sizes for the acpica.lib produced by
7350 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7352 driver or OSPM code. The debug version of the code includes the debug
7354 trace mechanism and has a much larger code and data size. Note that these
7355 values will vary depending on the efficiency of the compiler and the
7356 compiler options used during generation.
7359 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7360 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7362 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7363 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7366 2) iASL Compiler/Disassembler:
7368 Disassembler: implemented support for symbolic resource descriptor
7369 references. If a CreateXxxxField operator references a fixed offset
7372 resource descriptor, a name is assigned to the descriptor and the offset
7374 translated to the appropriate resource tag and pathname. The addition of
7375 this support brings the disassembled code very close to the original ASL
7376 source code and helps eliminate run-time errors when the disassembled
7378 is modified (and recompiled) in such a way as to invalidate the original
7381 Implemented support for a Descriptor Name as the last parameter to the
7383 Register() macro. This parameter was inadvertently left out of the ACPI
7384 specification, and will be added for ACPI 3.0b.
7386 Fixed a problem where the use of the "_OSI" string (versus the full path
7387 "\_OSI") caused an internal compiler error. ("No back ptr to op")
7389 Fixed a problem with the error message that occurs when an invalid string
7391 used for a _HID object (such as one with an embedded asterisk:
7393 The correct message is now displayed.
7395 ----------------------------------------
7396 17 February 2006. Summary of changes for version 20060217:
7398 1) ACPI CA Core Subsystem:
7400 Implemented a change to the IndexField support to match the behavior of
7402 Microsoft AML interpreter. The value written to the Index register is now
7404 byte offset, no longer an index based upon the width of the Data
7406 This should fix IndexField problems seen on some machines where the Data
7407 register is not exactly one byte wide. The ACPI specification will be
7408 clarified on this point.
7410 Fixed a problem where several resource descriptor types could overrun the
7411 internal descriptor buffer due to size miscalculation: VendorShort,
7412 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
7413 affect all platforms.
7415 Fixed a problem where individual resource descriptors were misaligned
7417 the internal buffer, causing alignment faults on IA64 platforms.
7419 Code and Data Size: These are the sizes for the acpica.lib produced by
7421 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7423 driver or OSPM code. The debug version of the code includes the debug
7425 trace mechanism and has a much larger code and data size. Note that these
7426 values will vary depending on the efficiency of the compiler and the
7427 compiler options used during generation.
7430 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7431 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7433 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7434 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7437 2) iASL Compiler/Disassembler:
7439 Implemented support for new reserved names: _WDG and _WED are Microsoft
7440 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
7441 defined method (Throttling Depth Limit.)
7443 Fixed a problem where a zero-length VendorShort or VendorLong resource
7444 descriptor was incorrectly emitted as a descriptor of length one.
7446 ----------------------------------------
7447 10 February 2006. Summary of changes for version 20060210:
7449 1) ACPI CA Core Subsystem:
7451 Removed a couple of extraneous ACPI_ERROR messages that appeared during
7452 normal execution. These became apparent after the conversion from
7455 Fixed a problem where the CreateField operator could hang if the BitIndex
7457 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
7459 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
7460 failed with an exception. This also fixes a couple of related RefOf and
7461 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
7463 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
7465 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
7469 Implemented a memory cleanup at the end of the execution of each
7471 of an AML While() loop, preventing the accumulation of outstanding
7473 (Valery Podrezov, BZ 5427)
7475 Eliminated a chunk of duplicate code in the object resolution code.
7479 Fixed several warnings during the 64-bit code generation.
7481 The AcpiSrc source code conversion tool now inserts one line of
7483 after an if() statement that is followed immediately by a comment,
7485 readability of the Linux code.
7487 Code and Data Size: The current and previous library sizes for the core
7488 subsystem are shown below. These are the code and data sizes for the
7489 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7491 values do not include any ACPI driver or OSPM code. The debug version of
7493 code includes the debug output trace mechanism and has a much larger code
7494 and data size. Note that these values will vary depending on the
7496 of the compiler and the compiler options used during generation.
7499 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7500 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7502 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7503 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7506 2) iASL Compiler/Disassembler:
7508 Fixed a problem with the disassembly of a BankField operator with a
7510 expression for the BankValue parameter.
7512 ----------------------------------------
7513 27 January 2006. Summary of changes for version 20060127:
7515 1) ACPI CA Core Subsystem:
7517 Implemented support in the Resource Manager to allow unresolved
7519 references within resource package objects for the _PRT method. This
7521 is in addition to the previously implemented unresolved reference support
7522 within the AML parser. If the interpreter slack mode is enabled, these
7523 unresolved references will be passed through to the caller as a NULL
7527 Implemented and deployed new macros and functions for error and warning
7528 messages across the subsystem. These macros are simpler and generate less
7529 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
7530 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
7531 macros remain defined to allow ACPI drivers time to migrate to the new
7534 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
7536 Acquire/Release Lock OSL interfaces.
7538 Fixed a problem where Alias ASL operators are sometimes not correctly
7539 resolved, in both the interpreter and the iASL compiler.
7541 Fixed several problems with the implementation of the
7542 ConcatenateResTemplate
7543 ASL operator. As per the ACPI specification, zero length buffers are now
7544 treated as a single EndTag. One-length buffers always cause a fatal
7545 exception. Non-zero length buffers that do not end with a full 2-byte
7547 cause a fatal exception.
7549 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
7550 interface. (With assistance from Thomas Renninger)
7552 Code and Data Size: The current and previous library sizes for the core
7553 subsystem are shown below. These are the code and data sizes for the
7554 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7556 values do not include any ACPI driver or OSPM code. The debug version of
7558 code includes the debug output trace mechanism and has a much larger code
7559 and data size. Note that these values will vary depending on the
7561 of the compiler and the compiler options used during generation.
7564 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7565 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7567 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7568 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7571 2) iASL Compiler/Disassembler:
7573 Fixed an internal error that was generated for any forward references to
7577 ----------------------------------------
7578 13 January 2006. Summary of changes for version 20060113:
7580 1) ACPI CA Core Subsystem:
7582 Added 2006 copyright to all module headers and signons. This affects
7583 virtually every file in the ACPICA core subsystem, iASL compiler, and the
7586 Enhanced the ACPICA error reporting in order to simplify user migration
7588 the non-debug version of ACPICA. Replaced all instances of the
7589 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
7591 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
7592 respectively. This preserves all error and warning messages in the non-
7594 version of the ACPICA code (this has been referred to as the "debug lite"
7595 option.) Over 200 cases were converted to create a total of over 380
7596 error/warning messages across the ACPICA code. This increases the code
7598 data size of the default non-debug version of the code somewhat (about
7600 but all error/warning reporting may be disabled if desired (and code
7601 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
7602 configuration option. The size of the debug version of ACPICA remains
7606 Fixed a memory leak within the AML Debugger "Set" command. One object was
7607 not properly deleted for every successful invocation of the command.
7609 Code and Data Size: The current and previous library sizes for the core
7610 subsystem are shown below. These are the code and data sizes for the
7611 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7613 values do not include any ACPI driver or OSPM code. The debug version of
7615 code includes the debug output trace mechanism and has a much larger code
7616 and data size. Note that these values will vary depending on the
7618 of the compiler and the compiler options used during generation.
7621 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7622 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7624 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7625 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7628 2) iASL Compiler/Disassembler:
7630 The compiler now officially supports the ACPI 3.0a specification that was
7631 released on December 30, 2005. (Specification is available at
7634 ----------------------------------------
7635 16 December 2005. Summary of changes for version 20051216:
7637 1) ACPI CA Core Subsystem:
7639 Implemented optional support to allow unresolved names within ASL Package
7640 objects. A null object is inserted in the package when a named reference
7641 cannot be located in the current namespace. Enabled via the interpreter
7642 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
7644 that contain such code.
7646 Implemented an optimization to the initialization sequence that can
7648 boot time. During ACPI device initialization, the _STA method is now run
7650 and only if the _INI method exists. The _STA method is used to determine
7652 the device is present; An _INI can only be run if _STA returns present,
7654 it is a waste of time to run the _STA method if the _INI does not exist.
7655 (Prototype and assistance from Dong Wei)
7657 Implemented use of the C99 uintptr_t for the pointer casting macros if it
7659 available in the current compiler. Otherwise, the default (void *) cast
7663 Fixed some possible memory leaks found within the execution path of the
7664 Break, Continue, If, and CreateField operators. (Valery Podrezov)
7666 Fixed a problem introduced in the 20051202 release where an exception is
7667 generated during method execution if a control method attempts to declare
7670 Moved resource descriptor string constants that are used by both the AML
7671 disassembler and AML debugger to the common utilities directory so that
7672 these components are independent.
7674 Implemented support in the AcpiExec utility (-e switch) to globally
7676 exceptions during control method execution (method is not aborted.)
7678 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
7681 Code and Data Size: The current and previous library sizes for the core
7682 subsystem are shown below. These are the code and data sizes for the
7683 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7685 values do not include any ACPI driver or OSPM code. The debug version of
7687 code includes the debug output trace mechanism and has a much larger code
7688 and data size. Note that these values will vary depending on the
7690 of the compiler and the compiler options used during generation.
7693 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7694 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
7696 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7697 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7700 2) iASL Compiler/Disassembler:
7702 Fixed a problem where a CPU stack overflow fault could occur if a
7704 method call was made from within a Return statement.
7706 ----------------------------------------
7707 02 December 2005. Summary of changes for version 20051202:
7709 1) ACPI CA Core Subsystem:
7711 Modified the parsing of control methods to no longer create namespace
7712 objects during the first pass of the parse. Objects are now created only
7713 during the execute phase, at the moment the namespace creation operator
7715 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
7717 should eliminate ALREADY_EXISTS exceptions seen on some machines where
7718 reentrant control methods are protected by an AML mutex. The mutex will
7720 correctly block multiple threads from attempting to create the same
7724 Increased the number of available Owner Ids for namespace object tracking
7725 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
7727 some machines with a large number of ACPI tables (either static or
7730 Fixed a problem with the AcpiExec utility where a fault could occur when
7732 -b switch (batch mode) is used.
7734 Enhanced the namespace dump routine to output the owner ID for each
7737 Code and Data Size: The current and previous library sizes for the core
7738 subsystem are shown below. These are the code and data sizes for the
7739 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7741 values do not include any ACPI driver or OSPM code. The debug version of
7743 code includes the debug output trace mechanism and has a much larger code
7744 and data size. Note that these values will vary depending on the
7746 of the compiler and the compiler options used during generation.
7749 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7750 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7752 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7753 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
7756 2) iASL Compiler/Disassembler:
7758 Fixed a parse error during compilation of certain Switch/Case constructs.
7760 simplify the parse, the grammar now allows for multiple Default
7762 and this error is now detected and flagged during the analysis phase.
7764 Disassembler: The disassembly now includes the contents of the original
7765 table header within a comment at the start of the file. This includes the
7766 name and version of the original ASL compiler.
7768 ----------------------------------------
7769 17 November 2005. Summary of changes for version 20051117:
7771 1) ACPI CA Core Subsystem:
7773 Fixed a problem in the AML parser where the method thread count could be
7774 decremented below zero if any errors occurred during the method parse
7776 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
7778 This also fixed a related regression with the mechanism that detects and
7779 corrects methods that cannot properly handle reentrancy (related to the
7780 deployment of the new OwnerId mechanism.)
7782 Eliminated the pre-parsing of control methods (to detect errors) during
7783 table load. Related to the problem above, this was causing unwind issues
7785 any errors occurred during the parse, and it seemed to be overkill. A
7787 load should not be aborted if there are problems with any single control
7788 method, thus rendering this feature rather pointless.
7790 Fixed a problem with the new table-driven resource manager where an
7792 buffer overflow could occur for small resource templates.
7794 Implemented a new external interface, AcpiGetVendorResource. This
7796 will find and return a vendor-defined resource descriptor within a _CRS
7798 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
7801 Removed the length limit (200) on string objects as per the upcoming ACPI
7802 3.0A specification. This affects the following areas of the interpreter:
7804 any implicit conversion of a Buffer to a String, 2) a String object
7806 of the ASL Concatentate operator, 3) the String object result of the ASL
7809 Fixed a problem in the Windows OS interface layer (OSL) where a
7811 on a semaphore object would incorrectly timeout. This allows the
7812 multithreading features of the AcpiExec utility to work properly under
7815 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
7816 the recently added file named "utresrc.c".
7818 Code and Data Size: The current and previous library sizes for the core
7819 subsystem are shown below. These are the code and data sizes for the
7820 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7822 values do not include any ACPI driver or OSPM code. The debug version of
7824 code includes the debug output trace mechanism and has a much larger code
7825 and data size. Note that these values will vary depending on the
7827 of the compiler and the compiler options used during generation.
7830 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
7831 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7833 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7834 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7837 2) iASL Compiler/Disassembler:
7839 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
7840 specification. For the iASL compiler, this means that string literals
7842 the source ASL can be of any length.
7844 Enhanced the listing output to dump the AML code for resource descriptors
7845 immediately after the ASL code for each descriptor, instead of in a block
7847 the end of the entire resource template.
7849 Enhanced the compiler debug output to dump the entire original parse tree
7850 constructed during the parse phase, before any transforms are applied to
7852 tree. The transformed tree is dumped also.
7854 ----------------------------------------
7855 02 November 2005. Summary of changes for version 20051102:
7857 1) ACPI CA Core Subsystem:
7859 Modified the subsystem initialization sequence to improve GPE support.
7861 GPE initialization has been split into two parts in order to defer
7863 of the _PRW methods (Power Resources for Wake) until after the hardware
7865 fully initialized and the SCI handler is installed. This allows the _PRW
7866 methods to access fields protected by the Global Lock. This will fix
7868 where a NO_GLOBAL_LOCK exception has been seen during initialization.
7870 Converted the ACPI internal object disassemble and display code within
7872 AML debugger to fully table-driven operation, reducing code size and
7873 increasing maintainability.
7875 Fixed a regression with the ConcatenateResTemplate() ASL operator
7877 in the 20051021 release.
7879 Implemented support for "local" internal ACPI object types within the
7880 debugger "Object" command and the AcpiWalkNamespace external interfaces.
7881 These local types include RegionFields, BankFields, IndexFields, Alias,
7885 Moved common AML resource handling code into a new file, "utresrc.c".
7887 code is shared by both the Resource Manager and the AML Debugger.
7889 Code and Data Size: The current and previous library sizes for the core
7890 subsystem are shown below. These are the code and data sizes for the
7891 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7893 values do not include any ACPI driver or OSPM code. The debug version of
7895 code includes the debug output trace mechanism and has a much larger code
7896 and data size. Note that these values will vary depending on the
7898 of the compiler and the compiler options used during generation.
7901 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
7902 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
7904 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
7905 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7908 2) iASL Compiler/Disassembler:
7910 Fixed a problem with very large initializer lists (more than 4000
7912 for both Buffer and Package objects where the parse stack could overflow.
7914 Enhanced the pre-compile source code scan for non-ASCII characters to
7916 characters within comment fields. The scan is now always performed and is
7918 longer optional, detecting invalid characters within a source file
7919 immediately rather than during the parse phase or later.
7921 Enhanced the ASL grammar definition to force early reductions on all
7923 style grammar elements so that the overall parse stack usage is greatly
7924 reduced. This should improve performance and reduce the possibility of
7928 Eliminated all reduce/reduce conflicts in the iASL parser generation.
7930 with the addition of a %expected statement, the compiler generates from
7931 source with no warnings.
7933 Fixed a possible segment fault in the disassembler if the input filename
7934 does not contain a "dot" extension (Thomas Renninger).
7936 ----------------------------------------
7937 21 October 2005. Summary of changes for version 20051021:
7939 1) ACPI CA Core Subsystem:
7941 Implemented support for the EM64T and other x86-64 processors. This
7942 essentially entails recognizing that these processors support non-aligned
7943 memory transfers. Previously, all 64-bit processors were assumed to lack
7944 hardware support for non-aligned transfers.
7946 Completed conversion of the Resource Manager to nearly full table-driven
7947 operation. Specifically, the resource conversion code (convert AML to
7948 internal format and the reverse) and the debug code to dump internal
7949 resource descriptors are fully table-driven, reducing code and data size
7951 improving maintainability.
7953 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
7955 on 64-bit processors instead of a fixed 32-bit word. (With assistance
7957 Alexey Starikovskiy)
7959 Implemented support within the resource conversion code for the Type-
7960 Specific byte within the various ACPI 3.0 *WordSpace macros.
7962 Fixed some issues within the resource conversion code for the type-
7964 flags for both Memory and I/O address resource descriptors. For Memory,
7965 implemented support for the MTP and TTP flags. For I/O, split the TRS and
7966 TTP flags into two separate fields.
7968 Code and Data Size: The current and previous library sizes for the core
7969 subsystem are shown below. These are the code and data sizes for the
7970 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7972 values do not include any ACPI driver or OSPM code. The debug version of
7974 code includes the debug output trace mechanism and has a much larger code
7975 and data size. Note that these values will vary depending on the
7977 of the compiler and the compiler options used during generation.
7980 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
7981 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
7983 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
7984 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
7988 2) iASL Compiler/Disassembler:
7990 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
7992 corresponding ResourceSource string was not also present in a resource
7993 descriptor declaration. This restriction caused problems with existing
7994 AML/ASL code that includes the Index byte without the string. When such
7996 was disassembled, it could not be compiled without modification. Further,
7997 the modified code created a resource template with a different size than
7999 original, breaking code that used fixed offsets into the resource
8003 Removed a recent feature of the disassembler to ignore a lone
8005 byte. This byte is now emitted if present so that the exact AML can be
8006 reproduced when the disassembled code is recompiled.
8008 Improved comments and text alignment for the resource descriptor code
8009 emitted by the disassembler.
8011 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8013 Register() resource descriptor.
8015 ----------------------------------------
8016 30 September 2005. Summary of changes for version 20050930:
8018 1) ACPI CA Core Subsystem:
8020 Completed a major overhaul of the Resource Manager code - specifically,
8021 optimizations in the area of the AML/internal resource conversion code.
8023 code has been optimized to simplify and eliminate duplicated code, CPU
8025 use has been decreased by optimizing function parameters and local
8026 variables, and naming conventions across the manager have been
8028 for clarity and ease of maintenance (this includes function, parameter,
8029 variable, and struct/typedef names.) The update may force changes in some
8030 driver code, depending on how resources are handled by the host OS.
8032 All Resource Manager dispatch and information tables have been moved to a
8033 single location for clarity and ease of maintenance. One new file was
8034 created, named "rsinfo.c".
8036 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8037 guarantee that the argument is not evaluated twice, making them less
8039 to macro side-effects. However, since there exists the possibility of
8040 additional stack use if a particular compiler cannot optimize them (such
8042 in the debug generation case), the original macros are optionally
8044 Note that some invocations of the return_VALUE macro may now cause size
8045 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8047 eliminate these. (From Randy Dunlap)
8049 Implemented a new mechanism to enable debug tracing for individual
8051 methods. A new external interface, AcpiDebugTrace, is provided to enable
8052 this mechanism. The intent is to allow the host OS to easily enable and
8053 disable tracing for problematic control methods. This interface can be
8054 easily exposed to a user or debugger interface if desired. See the file
8055 psxface.c for details.
8057 AcpiUtCallocate will now return a valid pointer if a length of zero is
8058 specified - a length of one is used and a warning is issued. This matches
8059 the behavior of AcpiUtAllocate.
8061 Code and Data Size: The current and previous library sizes for the core
8062 subsystem are shown below. These are the code and data sizes for the
8063 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8065 values do not include any ACPI driver or OSPM code. The debug version of
8067 code includes the debug output trace mechanism and has a much larger code
8068 and data size. Note that these values will vary depending on the
8070 of the compiler and the compiler options used during generation.
8073 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8074 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8076 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8077 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8080 2) iASL Compiler/Disassembler:
8082 A remark is issued if the effective compile-time length of a package or
8083 buffer is zero. Previously, this was a warning.
8085 ----------------------------------------
8086 16 September 2005. Summary of changes for version 20050916:
8088 1) ACPI CA Core Subsystem:
8090 Fixed a problem within the Resource Manager where support for the Generic
8091 Register descriptor was not fully implemented. This descriptor is now
8093 recognized, parsed, disassembled, and displayed.
8095 Completely restructured the Resource Manager code to utilize table-driven
8096 dispatch and lookup, eliminating many of the large switch() statements.
8098 reduces overall subsystem code size and code complexity. Affects the
8099 resource parsing and construction, disassembly, and debug dump output.
8101 Cleaned up and restructured the debug dump output for all resource
8102 descriptors. Improved readability of the output and reduced code size.
8104 Fixed a problem where changes to internal data structures caused the
8105 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8107 Code and Data Size: The current and previous library sizes for the core
8108 subsystem are shown below. These are the code and data sizes for the
8109 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8111 values do not include any ACPI driver or OSPM code. The debug version of
8113 code includes the debug output trace mechanism and has a much larger code
8114 and data size. Note that these values will vary depending on the
8116 of the compiler and the compiler options used during generation.
8119 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8120 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8122 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8123 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8126 2) iASL Compiler/Disassembler:
8128 Updated the disassembler to automatically insert an EndDependentFn()
8130 into the ASL stream if this macro is missing in the original AML code,
8131 simplifying compilation of the resulting ASL module.
8133 Fixed a problem in the disassembler where a disassembled ResourceSource
8134 string (within a large resource descriptor) was not surrounded by quotes
8136 not followed by a comma, causing errors when the resulting ASL module was
8137 compiled. Also, escape sequences within a ResourceSource string are now
8138 handled correctly (especially "\\")
8140 ----------------------------------------
8141 02 September 2005. Summary of changes for version 20050902:
8143 1) ACPI CA Core Subsystem:
8145 Fixed a problem with the internal Owner ID allocation and deallocation
8146 mechanisms for control method execution and recursive method invocation.
8147 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
8148 messages seen on some systems. Recursive method invocation depth is
8149 currently limited to 255. (Alexey Starikovskiy)
8151 Completely eliminated all vestiges of support for the "module-level
8152 executable code" until this support is fully implemented and debugged.
8154 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
8155 some systems that invoke this support.
8157 Fixed a problem within the resource manager code where the transaction
8159 for a 64-bit address descriptor were handled incorrectly in the type-
8162 Consolidated duplicate code within the address descriptor resource
8164 code, reducing overall subsystem code size.
8166 Fixed a fault when using the AML debugger "disassemble" command to
8167 disassemble individual control methods.
8169 Removed references to the "release_current" directory within the Unix
8172 Code and Data Size: The current and previous core subsystem library sizes
8173 are shown below. These are the code and data sizes for the acpica.lib
8174 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
8175 include any ACPI driver or OSPM code. The debug version of the code
8177 the debug output trace mechanism and has a much larger code and data
8179 Note that these values will vary depending on the efficiency of the
8181 and the compiler options used during generation.
8184 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8185 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8187 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8188 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8191 2) iASL Compiler/Disassembler:
8193 Implemented an error check for illegal duplicate values in the interrupt
8195 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
8198 Implemented error checking for the Irq() and IrqNoFlags() macros to
8200 too many values in the interrupt list (16 max) and invalid values in the
8203 The maximum length string literal within an ASL file is now restricted to
8204 200 characters as per the ACPI specification.
8206 Fixed a fault when using the -ln option (generate namespace listing).
8208 Implemented an error check to determine if a DescriptorName within a
8209 resource descriptor has already been used within the current scope.
8211 ----------------------------------------
8212 15 August 2005. Summary of changes for version 20050815:
8214 1) ACPI CA Core Subsystem:
8216 Implemented a full bytewise compare to determine if a table load request
8218 attempting to load a duplicate table. The compare is performed if the
8220 signatures and table lengths match. This will allow different tables with
8221 the same OEM Table ID and revision to be loaded - probably against the
8223 specification, but discovered in the field nonetheless.
8225 Added the changes.txt logfile to each of the zipped release packages.
8227 Code and Data Size: Current and previous core subsystem library sizes are
8228 shown below. These are the code and data sizes for the acpica.lib
8230 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8231 any ACPI driver or OSPM code. The debug version of the code includes the
8232 debug output trace mechanism and has a much larger code and data size.
8234 that these values will vary depending on the efficiency of the compiler
8236 the compiler options used during generation.
8239 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8240 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8242 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8243 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8246 2) iASL Compiler/Disassembler:
8248 Fixed a problem where incorrect AML code could be generated for Package
8249 objects if optimization is disabled (via the -oa switch).
8251 Fixed a problem with where incorrect AML code is generated for variable-
8252 length packages when the package length is not specified and the number
8254 initializer values is greater than 255.
8257 ----------------------------------------
8258 29 July 2005. Summary of changes for version 20050729:
8260 1) ACPI CA Core Subsystem:
8262 Implemented support to ignore an attempt to install/load a particular
8264 table more than once. Apparently there exists BIOS code that repeatedly
8265 attempts to load the same SSDT upon certain events. With assistance from
8266 Venkatesh Pallipadi.
8268 Restructured the main interface to the AML parser in order to correctly
8269 handle all exceptional conditions. This will prevent leakage of the
8271 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
8273 machines. With assistance from Alexey Starikovskiy.
8275 Support for "module level code" has been disabled in this version due to
8277 number of issues that have appeared on various machines. The support can
8279 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
8280 compilation. When the issues are fully resolved, the code will be enabled
8284 Modified the internal functions for debug print support to define the
8285 FunctionName parameter as a (const char *) for compatibility with
8287 built-in macros such as __FUNCTION__, etc.
8289 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
8291 Implemented support to display an object count summary for the AML
8293 commands Object and Methods.
8295 Code and Data Size: Current and previous core subsystem library sizes are
8296 shown below. These are the code and data sizes for the acpica.lib
8298 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8299 any ACPI driver or OSPM code. The debug version of the code includes the
8300 debug output trace mechanism and has a much larger code and data size.
8302 that these values will vary depending on the efficiency of the compiler
8304 the compiler options used during generation.
8307 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8308 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8310 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8311 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8314 2) iASL Compiler/Disassembler:
8316 Fixed a regression that appeared in the 20050708 version of the compiler
8317 where an error message was inadvertently emitted for invocations of the
8319 reserved control method.
8321 ----------------------------------------
8322 08 July 2005. Summary of changes for version 20050708:
8324 1) ACPI CA Core Subsystem:
8326 The use of the CPU stack in the debug version of the subsystem has been
8327 considerably reduced. Previously, a debug structure was declared in every
8328 function that used the debug macros. This structure has been removed in
8329 favor of declaring the individual elements as parameters to the debug
8330 functions. This reduces the cumulative stack use during nested execution
8332 ACPI function calls at the cost of a small increase in the code size of
8334 debug version of the subsystem. With assistance from Alexey Starikovskiy
8338 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
8339 headers to define a macro that will return the current function name at
8340 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
8342 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
8343 compiler-dependent header, the function name is saved on the CPU stack
8345 pointer per function.) This mechanism is used because apparently there
8346 exists no standard ANSI-C defined macro that that returns the function
8349 Redesigned and reimplemented the "Owner ID" mechanism used to track
8350 namespace objects created/deleted by ACPI tables and control method
8351 execution. A bitmap is now used to allocate and free the IDs, thus
8353 the wraparound problem present in the previous implementation. The size
8355 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
8358 Removed the UINT32_BIT and UINT16_BIT types that were used for the
8360 flag definitions within the headers for the predefined ACPI tables. These
8361 have been replaced by UINT8_BIT in order to increase the code portability
8363 the subsystem. If the use of UINT8 remains a problem, we may be forced to
8364 eliminate bitfields entirely because of a lack of portability.
8366 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
8368 is a frequently used function and this improvement increases the
8370 of the entire subsystem (Alexey Starikovskiy).
8372 Fixed several possible memory leaks and the inverse - premature object
8373 deletion (Alexey Starikovskiy).
8375 Code and Data Size: Current and previous core subsystem library sizes are
8376 shown below. These are the code and data sizes for the acpica.lib
8378 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8379 any ACPI driver or OSPM code. The debug version of the code includes the
8380 debug output trace mechanism and has a much larger code and data size.
8382 that these values will vary depending on the efficiency of the compiler
8384 the compiler options used during generation.
8387 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8388 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8390 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8391 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8393 ----------------------------------------
8394 24 June 2005. Summary of changes for version 20050624:
8396 1) ACPI CA Core Subsystem:
8398 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
8399 the host-defined cache object. This allows the OSL implementation to
8401 and type this object in any manner desired, simplifying the OSL
8402 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
8403 Linux, and should be defined in the OS-specific header file for other
8404 operating systems as required.
8406 Changed the interface to AcpiOsAcquireObject to directly return the
8407 requested object as the function return (instead of ACPI_STATUS.) This
8408 change was made for performance reasons, since this is the purpose of the
8409 interface in the first place. AcpiOsAcquireObject is now similar to the
8410 AcpiOsAllocate interface.
8412 Implemented a new AML debugger command named Businfo. This command
8414 information about all devices that have an associate _PRT object. The
8416 _HID, _UID, and _CID are displayed for these devices.
8418 Modified the initialization sequence in AcpiInitializeSubsystem to call
8420 OSL interface AcpiOslInitialize first, before any local initialization.
8422 change was required because the global initialization now calls OSL
8425 Enhanced the Dump command to display the entire contents of Package
8427 (including all sub-objects and their values.)
8429 Restructured the code base to split some files because of size and/or
8430 because the code logically belonged in a separate file. New files are
8432 below. All makefiles and project files included in the ACPI CA release
8435 utilities/utcache.c /* Local cache interfaces */
8436 utilities/utmutex.c /* Local mutex support */
8437 utilities/utstate.c /* State object support */
8438 interpreter/parser/psloop.c /* Main AML parse loop */
8440 Code and Data Size: Current and previous core subsystem library sizes are
8441 shown below. These are the code and data sizes for the acpica.lib
8443 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8444 any ACPI driver or OSPM code. The debug version of the code includes the
8445 debug output trace mechanism and has a much larger code and data size.
8447 that these values will vary depending on the efficiency of the compiler
8449 the compiler options used during generation.
8452 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8453 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8455 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8456 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8459 2) iASL Compiler/Disassembler:
8461 Fixed a regression introduced in version 20050513 where the use of a
8463 object within a Case() statement caused a compile time exception. The
8464 original behavior has been restored (a Match() operator is emitted.)
8466 ----------------------------------------
8467 17 June 2005. Summary of changes for version 20050617:
8469 1) ACPI CA Core Subsystem:
8471 Moved the object cache operations into the OS interface layer (OSL) to
8473 the host OS to handle these operations if desired (for example, the Linux
8474 OSL will invoke the slab allocator). This support is optional; the
8476 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
8478 code in the ACPI CA core. The new OSL interfaces are shown below. See
8479 utalloc.c for an example implementation, and acpiosxf.h for the exact
8480 interface definitions. With assistance from Alexey Starikovskiy.
8487 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
8489 and restore a flags parameter. This fits better with many OS lock models.
8490 Note: the current execution state (interrupt handler or not) is no longer
8491 passed to these interfaces. If necessary, the OSL must determine this
8493 by itself, a simple and fast operation. With assistance from Alexey
8496 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
8497 present if the revision of the RSDP was 2 or greater. According to the
8499 specification, the XSDT is optional in all cases, and the table manager
8500 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
8501 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
8505 Fixed an interpreter problem with the Mid() operator in the case of an
8507 string where the resulting output string is of zero length. It now
8509 returns a valid, null terminated string object instead of a string object
8510 with a null pointer.
8512 Fixed a problem with the control method argument handling to allow a
8514 to an Arg object that already contains an object of type Device. The
8516 object is now correctly overwritten. Previously, an error was returned.
8519 Enhanced the debugger Find command to emit object values in addition to
8521 found object pathnames. The output format is the same as the dump
8525 Enhanced the debugger Set command. It now has the ability to set the
8527 of any Named integer object in the namespace (Previously, only method
8529 and args could be set.)
8531 Code and Data Size: Current and previous core subsystem library sizes are
8532 shown below. These are the code and data sizes for the acpica.lib
8534 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8535 any ACPI driver or OSPM code. The debug version of the code includes the
8536 debug output trace mechanism and has a much larger code and data size.
8538 that these values will vary depending on the efficiency of the compiler
8540 the compiler options used during generation.
8543 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8544 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8546 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8547 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8550 2) iASL Compiler/Disassembler:
8552 Fixed a regression in the disassembler where if/else/while constructs
8554 output incorrectly. This problem was introduced in the previous release
8555 (20050526). This problem also affected the single-step disassembly in the
8558 Fixed a problem where compiling the reserved _OSI method would randomly
8560 rarely) produce compile errors.
8562 Enhanced the disassembler to emit compilable code in the face of
8564 AML resource descriptors. If the optional ResourceSourceIndex is present,
8565 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
8566 disassembly. Otherwise, the resulting code cannot be compiled without
8569 ----------------------------------------
8570 26 May 2005. Summary of changes for version 20050526:
8572 1) ACPI CA Core Subsystem:
8574 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
8575 the module level (not within a control method.) These opcodes are
8577 exactly once at the time the table is loaded. This type of code was legal
8579 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
8581 order to provide backwards compatibility with earlier BIOS
8583 This eliminates the "Encountered executable code at module level" warning
8584 that was previously generated upon detection of such code.
8586 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
8587 inadvertently be generated during the lookup of namespace objects in the
8588 second pass parse of ACPI tables and control methods. It appears that
8590 problem could occur during the resolution of forward references to
8594 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
8595 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
8596 allows the deadlock detection debug code to be compiled out in the normal
8597 case, improving mutex performance (and overall subsystem performance)
8600 Implemented a handful of miscellaneous fixes for possible memory leaks on
8601 error conditions and error handling control paths. These fixes were
8602 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
8604 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
8606 to prevent a fault in this error case.
8608 Code and Data Size: Current and previous core subsystem library sizes are
8609 shown below. These are the code and data sizes for the acpica.lib
8611 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8612 any ACPI driver or OSPM code. The debug version of the code includes the
8613 debug output trace mechanism and has a much larger code and data size.
8615 that these values will vary depending on the efficiency of the compiler
8617 the compiler options used during generation.
8620 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8621 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8623 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8624 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8627 2) iASL Compiler/Disassembler:
8629 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
8630 the module level (not within a control method.) These operators will be
8631 executed once at the time the table is loaded. This type of code was
8633 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
8634 compiler in order to provide backwards compatibility with earlier BIOS
8638 The ACPI integer width (specified via the table revision ID or the -r
8639 override, 32 or 64 bits) is now used internally during compile-time
8641 folding to ensure that constants are truncated to 32 bits if necessary.
8642 Previously, the revision ID value was only emitted in the AML table
8645 An error message is now generated for the Mutex and Method operators if
8647 SyncLevel parameter is outside the legal range of 0 through 15.
8649 Fixed a problem with the Method operator ParameterTypes list handling
8651 3.0). Previously, more than 2 types or 2 arguments generated a syntax
8653 The actual underlying implementation of method argument typechecking is
8654 still under development, however.
8656 ----------------------------------------
8657 13 May 2005. Summary of changes for version 20050513:
8659 1) ACPI CA Core Subsystem:
8661 Implemented support for PCI Express root bridges -- added support for
8663 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
8665 The interpreter now automatically truncates incoming 64-bit constants to
8667 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
8669 also affects the iASL compiler constant folding. (Note: as per below, the
8670 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
8672 Fixed a problem where string and buffer objects with "static" pointers
8673 (pointers to initialization data within an ACPI table) were not handled
8674 consistently. The internal object copy operation now always copies the
8676 to a newly allocated buffer, regardless of whether the source object is
8679 Fixed a problem with the FromBCD operator where an implicit result
8680 conversion was improperly performed while storing the result to the
8682 operand. Since this is an "explicit conversion" operator, the implicit
8683 conversion should never be performed on the output.
8685 Fixed a problem with the CopyObject operator where a copy to an existing
8686 named object did not always completely overwrite the existing object
8688 at name. Specifically, a buffer-to-buffer copy did not delete the
8692 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
8694 structs for consistency.
8696 Code and Data Size: Current and previous core subsystem library sizes are
8697 shown below. These are the code and data sizes for the acpica.lib
8699 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8700 any ACPI driver or OSPM code. The debug version of the code includes the
8701 debug output trace mechanism and has a much larger code and data size.
8703 that these values will vary depending on the efficiency of the compiler
8705 the compiler options used during generation.
8708 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8709 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8710 Current Release: (Same sizes)
8711 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8712 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8715 2) iASL Compiler/Disassembler:
8717 The compiler now emits a warning if an attempt is made to generate a 64-
8719 integer constant from within a 32-bit ACPI table (Revision < 2). The
8721 is truncated to 32 bits.
8723 Fixed a problem with large package objects: if the static length of the
8724 package is greater than 255, the "variable length package" opcode is
8725 emitted. Previously, this caused an error. This requires an update to the
8726 ACPI spec, since it currently (incorrectly) states that packages larger
8728 255 elements are not allowed.
8730 The disassembler now correctly handles variable length packages and
8732 larger than 255 elements.
8734 ----------------------------------------
8735 08 April 2005. Summary of changes for version 20050408:
8737 1) ACPI CA Core Subsystem:
8739 Fixed three cases in the interpreter where an "index" argument to an ASL
8740 function was still (internally) 32 bits instead of the required 64 bits.
8741 This was the Index argument to the Index, Mid, and Match operators.
8743 The "strupr" function is now permanently local (AcpiUtStrupr), since this
8745 not a POSIX-defined function and not present in most kernel-level C
8746 libraries. All references to the C library strupr function have been
8750 Completed the deployment of static functions/prototypes. All prototypes
8752 the static attribute have been moved from the headers to the owning C
8755 Implemented an extract option (-e) for the AcpiBin utility (AML binary
8756 utility). This option allows the utility to extract individual ACPI
8758 from the output of AcpiDmp. It provides the same functionality of the
8759 acpixtract.pl perl script without the worry of setting the correct perl
8760 options. AcpiBin runs on Windows and has not yet been generated/validated
8762 the Linux/Unix environment (but should be soon).
8764 Updated and fixed the table dump option for AcpiBin (-d). This option
8765 converts a single ACPI table to a hex/ascii file, similar to the output
8769 Code and Data Size: Current and previous core subsystem library sizes are
8770 shown below. These are the code and data sizes for the acpica.lib
8772 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8773 any ACPI driver or OSPM code. The debug version of the code includes the
8774 debug output trace mechanism and has a much larger code and data size.
8776 that these values will vary depending on the efficiency of the compiler
8778 the compiler options used during generation.
8781 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
8782 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
8784 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8785 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8788 2) iASL Compiler/Disassembler:
8790 Disassembler fix: Added a check to ensure that the table length found in
8792 ACPI table header within the input file is not longer than the actual
8794 file size. This indicates some kind of file or table corruption.
8796 ----------------------------------------
8797 29 March 2005. Summary of changes for version 20050329:
8799 1) ACPI CA Core Subsystem:
8801 An error is now generated if an attempt is made to create a Buffer Field
8803 length zero (A CreateField with a length operand of zero.)
8805 The interpreter now issues a warning whenever executable code at the
8807 level is detected during ACPI table load. This will give some idea of the
8808 prevalence of this type of code.
8810 Implemented support for references to named objects (other than control
8811 methods) within package objects.
8813 Enhanced package object output for the debug object. Package objects are
8815 completely dumped, showing all elements.
8817 Enhanced miscellaneous object output for the debug object. Any object can
8818 now be written to the debug object (for example, a device object can be
8819 written, and the type of the object will be displayed.)
8821 The "static" qualifier has been added to all local functions across both
8823 core subsystem and the iASL compiler.
8825 The number of "long" lines (> 80 chars) within the source has been
8826 significantly reduced, by about 1/3.
8828 Cleaned up all header files to ensure that all CA/iASL functions are
8829 prototyped (even static functions) and the formatting is consistent.
8831 Two new header files have been added, acopcode.h and acnames.h.
8833 Removed several obsolete functions that were no longer used.
8835 Code and Data Size: Current and previous core subsystem library sizes are
8836 shown below. These are the code and data sizes for the acpica.lib
8838 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8839 any ACPI driver or OSPM code. The debug version of the code includes the
8840 debug output trace mechanism and has a much larger code and data size.
8842 that these values will vary depending on the efficiency of the compiler
8844 the compiler options used during generation.
8847 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
8848 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
8850 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
8851 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
8855 2) iASL Compiler/Disassembler:
8857 Fixed a problem with the resource descriptor generation/support. For the
8858 ResourceSourceIndex and the ResourceSource fields, both must be present,
8860 both must be not present - can't have one without the other.
8862 The compiler now returns non-zero from the main procedure if any errors
8864 occurred during the compilation.
8867 ----------------------------------------
8868 09 March 2005. Summary of changes for version 20050309:
8870 1) ACPI CA Core Subsystem:
8872 The string-to-buffer implicit conversion code has been modified again
8874 a change to the ACPI specification. In order to match the behavior of
8876 other major ACPI implementation, the target buffer is no longer truncated
8878 the source string is smaller than an existing target buffer. This change
8879 requires an update to the ACPI spec, and should eliminate the recent
8880 AE_AML_BUFFER_LIMIT issues.
8882 The "implicit return" support was rewritten to a new algorithm that
8884 the general case. Rather than attempt to determine when a method is about
8886 exit, the result of every ASL operator is saved momentarily until the
8888 next ASL operator is executed. Therefore, no matter how the method exits,
8889 there will always be a saved implicit return value. This feature is only
8890 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
8892 AE_AML_NO_RETURN_VALUE errors when enabled.
8894 Implemented implicit conversion support for the predicate (operand) of
8896 If, Else, and While operators. String and Buffer arguments are
8898 converted to Integers.
8900 Changed the string-to-integer conversion behavior to match the new ACPI
8901 errata: "If no integer object exists, a new integer is created. The ASCII
8902 string is interpreted as a hexadecimal constant. Each string character is
8903 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
8904 with the first character as the most significant digit, and ending with
8906 first non-hexadecimal character or end-of-string." This means that the
8908 non-hex character terminates the conversion and this is the code that was
8911 Fixed a problem where the ObjectType operator would fail (fault) when
8913 on an Index of a Package which pointed to a null package element. The
8914 operator now properly returns zero (Uninitialized) in this case.
8916 Fixed a problem where the While operator used excessive memory by not
8917 properly popping the result stack during execution. There was no memory
8919 after execution, however. (Code provided by Valery Podrezov.)
8921 Fixed a problem where references to control methods within Package
8923 caused the method to be invoked, instead of producing a reference object
8924 pointing to the method.
8926 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
8928 improve performance and reduce code size. (Code provided by Alexey
8931 Code and Data Size: Current and previous core subsystem library sizes are
8932 shown below. These are the code and data sizes for the acpica.lib
8934 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8935 any ACPI driver or OSPM code. The debug version of the code includes the
8936 debug output trace mechanism and has a much larger code and data size.
8938 that these values will vary depending on the efficiency of the compiler
8940 the compiler options used during generation.
8943 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
8944 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
8946 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
8947 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
8950 2) iASL Compiler/Disassembler:
8952 Fixed a problem with the Return operator with no arguments. Since the AML
8953 grammar for the byte encoding requires an operand for the Return opcode,
8955 compiler now emits a Return(Zero) for this case. An ACPI specification
8956 update has been written for this case.
8958 For tables other than the DSDT, namepath optimization is automatically
8959 disabled. This is because SSDTs can be loaded anywhere in the namespace,
8961 compiler has no knowledge of where, and thus cannot optimize namepaths.
8963 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
8964 inadvertently omitted from the ACPI specification, and will require an
8967 The source file scan for ASCII characters is now optional (-a). This
8969 was made because some vendors place non-ascii characters within comments.
8970 However, the scan is simply a brute-force byte compare to ensure all
8971 characters in the file are in the range 0x00 to 0x7F.
8973 Fixed a problem with the CondRefOf operator where the compiler was
8974 inappropriately checking for the existence of the target. Since the point
8976 the operator is to check for the existence of the target at run-time, the
8977 compiler no longer checks for the target existence.
8979 Fixed a problem where errors generated from the internal AML interpreter
8980 during constant folding were not handled properly, causing a fault.
8982 Fixed a problem with overly aggressive range checking for the Stall
8983 operator. The valid range (max 255) is now only checked if the operand is
8985 type Integer. All other operand types cannot be statically checked.
8987 Fixed a problem where control method references within the RefOf,
8989 and ObjectType operators were not treated properly. They are now treated
8991 actual references, not method invocations.
8993 Fixed and enhanced the "list namespace" option (-ln). This option was
8995 a number of releases ago.
8997 Improved error handling for the Field, IndexField, and BankField
8999 The compiler now cleanly reports and recovers from errors in the field
9000 component (FieldUnit) list.
9002 Fixed a disassembler problem where the optional ResourceDescriptor fields
9003 TRS and TTP were not always handled correctly.
9005 Disassembler - Comments in output now use "//" instead of "/*"
9007 ----------------------------------------
9008 28 February 2005. Summary of changes for version 20050228:
9010 1) ACPI CA Core Subsystem:
9012 Fixed a problem where the result of an Index() operator (an object
9013 reference) must increment the reference count on the target object for
9015 life of the object reference.
9017 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9018 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9020 resource descriptors.
9022 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9023 Space Descriptor" string, indicating interpreter support for the
9027 Implemented header support for the new ACPI 3.0 FADT flag bits.
9029 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9031 status/enable registers.
9033 Updated header support for the MADT processor local Apic struct and MADT
9034 platform interrupt source struct for new ACPI 3.0 fields.
9036 Implemented header support for the SRAT and SLIT ACPI tables.
9038 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9042 Code and Data Size: Current and previous core subsystem library sizes are
9043 shown below. These are the code and data sizes for the acpica.lib
9045 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9046 any ACPI driver or OSPM code. The debug version of the code includes the
9047 debug output trace mechanism and has a much larger code and data size.
9049 that these values will vary depending on the efficiency of the compiler
9051 the compiler options used during generation.
9054 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9055 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9057 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9058 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9061 2) iASL Compiler/Disassembler:
9063 Fixed a problem with the internal 64-bit String-to-integer conversion
9065 strings less than two characters long.
9067 Fixed a problem with constant folding where the result of the Index()
9068 operator can not be considered a constant. This means that Index() cannot
9070 a type3 opcode and this will require an update to the ACPI specification.
9072 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9073 descriptor fields. These fields were inadvertently ignored and not output
9075 the disassembly of the resource descriptor.
9078 ----------------------------------------
9079 11 February 2005. Summary of changes for version 20050211:
9081 1) ACPI CA Core Subsystem:
9083 Implemented ACPI 3.0 support for implicit conversion within the Match()
9084 operator. MatchObjects can now be of type integer, buffer, or string
9086 of just type integer. Package elements are implicitly converted to the
9088 of the MatchObject. This change aligns the behavior of Match() with the
9089 behavior of the other logical operators (LLess(), etc.) It also requires
9091 errata change to the ACPI specification as this support was intended for
9092 ACPI 3.0, but was inadvertently omitted.
9094 Fixed a problem with the internal implicit "to buffer" conversion.
9096 that are converted to buffers will cause buffer truncation if the string
9098 smaller than the target buffer. Integers that are converted to buffers
9100 not cause buffer truncation, only zero extension (both as per the ACPI
9101 spec.) The problem was introduced when code was added to truncate the
9102 buffer, but this should not be performed in all cases, only the string
9105 Fixed a problem with the Buffer and Package operators where the
9107 would get confused if two such operators were used as operands to an ASL
9108 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9109 stack was not being popped after the execution of these operators,
9111 in an AE_NO_RETURN_VALUE exception.
9113 Fixed a problem with constructs of the form Store(Index(...),...). The
9114 reference object returned from Index was inadvertently resolved to an
9116 value. This problem was introduced in version 20050114 when the behavior
9118 Store() was modified to restrict the object types that can be used as the
9119 source operand (to match the ACPI specification.)
9121 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9123 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9125 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9127 Code and Data Size: Current and previous core subsystem library sizes are
9128 shown below. These are the code and data sizes for the acpica.lib
9130 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9131 any ACPI driver or OSPM code. The debug version of the code includes the
9132 debug output trace mechanism and has a much larger code and data size.
9134 that these values will vary depending on the efficiency of the compiler
9136 the compiler options used during generation.
9139 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9140 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9142 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9143 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9146 2) iASL Compiler/Disassembler:
9148 Fixed a code generation problem in the constant folding optimization code
9149 where incorrect code was generated if a constant was reduced to a buffer
9150 object (i.e., a reduced type 5 opcode.)
9152 Fixed a typechecking problem for the ToBuffer operator. Caused by an
9153 incorrect return type in the internal opcode information table.
9155 ----------------------------------------
9156 25 January 2005. Summary of changes for version 20050125:
9158 1) ACPI CA Core Subsystem:
9160 Fixed a recently introduced problem with the Global Lock where the
9161 underlying semaphore was not created. This problem was introduced in
9162 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
9163 Acquire() operation on _GL.
9165 The local object cache is now optional, and is disabled by default. Both
9166 AcpiExec and the iASL compiler enable the cache because they run in user
9167 mode and this enhances their performance. #define
9168 ACPI_ENABLE_OBJECT_CACHE
9169 to enable the local cache.
9171 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
9173 optional "implicit return" support where an error was returned if no
9175 object was expected, but one was implicitly returned. AE_OK is now
9177 in this case and the implicitly returned object is deleted.
9178 AcpiUtEvaluateObject is only occasionally used, and only to execute
9180 methods such as _STA and _INI where the return type is known up front.
9182 Fixed a few issues with the internal convert-to-integer code. It now
9184 an error if an attempt is made to convert a null string, a string of only
9185 blanks/tabs, or a zero-length buffer. This affects both implicit
9187 and explicit conversion via the ToInteger() operator.
9189 The internal debug code in AcpiUtAcquireMutex has been commented out. It
9191 not needed for normal operation and should increase the performance of
9193 entire subsystem. The code remains in case it is needed for debug
9197 The AcpiExec source and makefile are included in the Unix/Linux package
9201 Code and Data Size: Current and previous core subsystem library sizes are
9202 shown below. These are the code and data sizes for the acpica.lib
9204 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9205 any ACPI driver or OSPM code. The debug version of the code includes the
9206 debug output trace mechanism and has a much larger code and data size.
9208 that these values will vary depending on the efficiency of the compiler
9210 the compiler options used during generation.
9213 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9214 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9216 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9217 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9219 2) iASL Compiler/Disassembler:
9221 Switch/Case support: A warning is now issued if the type of the Switch
9223 cannot be determined at compile time. For example, Switch(Arg0) will
9224 generate the warning, and the type is assumed to be an integer. As per
9226 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
9230 Switch/Case support: Implemented support for buffer and string objects as
9231 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
9232 buffers and strings.
9234 Switch/Case support: The emitted code for the LEqual() comparisons now
9236 the switch value as the first operand, not the second. The case value is
9238 the second operand, and this allows the case value to be implicitly
9239 converted to the type of the switch value, not the other way around.
9241 Switch/Case support: Temporary variables are now emitted immediately
9243 the control method, not at the global level. This means that there are
9245 36 temps available per-method, not 36 temps per-module as was the case
9247 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
9249 ----------------------------------------
9250 14 January 2005. Summary of changes for version 20050114:
9252 Added 2005 copyright to all module headers. This affects every module in
9253 the core subsystem, iASL compiler, and the utilities.
9255 1) ACPI CA Core Subsystem:
9257 Fixed an issue with the String-to-Buffer conversion code where the string
9258 null terminator was not included in the buffer after conversion, but
9260 is existing ASL that assumes the string null terminator is included. This
9262 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
9263 introduced in the previous version when the code was updated to correctly
9264 set the converted buffer size as per the ACPI specification. The ACPI
9266 is ambiguous and will be updated to specify that the null terminator must
9268 included in the converted buffer. This also affects the ToBuffer() ASL
9271 Fixed a problem with the Mid() ASL/AML operator where it did not work
9272 correctly on Buffer objects. Newly created sub-buffers were not being
9277 Fixed a problem in AcpiTbFindTable where incorrect string compares were
9278 performed on the OemId and OemTableId table header fields. These fields
9280 not null terminated, so strncmp is now used instead of strcmp.
9282 Implemented a restriction on the Store() ASL/AML operator to align the
9283 behavior with the ACPI specification. Previously, any object could be
9285 as the source operand. Now, the only objects that may be used are
9287 Buffers, Strings, Packages, Object References, and DDB Handles. If
9288 necessary, the original behavior can be restored by enabling the
9289 EnableInterpreterSlack flag.
9291 Enhanced the optional "implicit return" support to allow an implicit
9293 value from methods that are invoked externally via the AcpiEvaluateObject
9294 interface. This enables implicit returns from the _STA and _INI methods,
9297 Changed the Revision() ASL/AML operator to return the current version of
9299 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
9301 the supported ACPI version (This is the function of the _REV method).
9303 Updated the _REV predefined method to return the currently supported
9307 Implemented batch mode option for the AcpiExec utility (-b).
9309 Code and Data Size: Current and previous core subsystem library sizes are
9310 shown below. These are the code and data sizes for the acpica.lib
9312 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9313 any ACPI driver or OSPM code. The debug version of the code includes the
9314 debug output trace mechanism and has a much larger code and data size.
9316 that these values will vary depending on the efficiency of the compiler
9318 the compiler options used during generation.
9321 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9322 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9324 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9325 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9327 ----------------------------------------
9328 10 December 2004. Summary of changes for version 20041210:
9330 ACPI 3.0 support is nearing completion in both the iASL compiler and the
9331 ACPI CA core subsystem.
9333 1) ACPI CA Core Subsystem:
9335 Fixed a problem in the ToDecimalString operator where the resulting
9337 length was incorrectly calculated. The length is now calculated exactly,
9338 eliminating incorrect AE_STRING_LIMIT exceptions.
9340 Fixed a problem in the ToHexString operator to allow a maximum 200
9342 string to be produced.
9344 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
9346 routine where the length of the resulting buffer was not truncated to the
9347 new size (if the target buffer already existed).
9349 Code and Data Size: Current and previous core subsystem library sizes are
9350 shown below. These are the code and data sizes for the acpica.lib
9352 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9353 any ACPI driver or OSPM code. The debug version of the code includes the
9354 debug output trace mechanism and has a much larger code and data size.
9356 that these values will vary depending on the efficiency of the compiler
9358 the compiler options used during generation.
9361 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9362 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9364 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9365 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9368 2) iASL Compiler/Disassembler:
9370 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
9371 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
9372 Includes support in the disassembler.
9374 Implemented support for the new (ACPI 3.0) parameter to the Register
9378 Fixed a problem where the _HE resource name for the Interrupt macro was
9379 referencing bit 0 instead of bit 1.
9381 Implemented check for maximum 255 interrupts in the Interrupt macro.
9383 Fixed a problem with the predefined resource descriptor names where
9384 incorrect AML code was generated if the offset within the resource buffer
9385 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
9386 but did not update the surrounding package lengths.
9388 Changes to the Dma macro: All channels within the channel list must be
9390 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
9391 optional (default is BusMaster).
9393 Implemented check for maximum 7 data bytes for the VendorShort macro.
9395 The ReadWrite parameter is now optional for the Memory32 and similar
9398 ----------------------------------------
9399 03 December 2004. Summary of changes for version 20041203:
9401 1) ACPI CA Core Subsystem:
9403 The low-level field insertion/extraction code (exfldio) has been
9405 rewritten to eliminate unnecessary complexity, bugs, and boundary
9408 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
9410 operators where the input operand could be inadvertently deleted if no
9411 conversion was necessary (e.g., if the input to ToInteger was an Integer
9414 Fixed a problem with the ToDecimalString and ToHexString where an
9416 exception code was returned if the resulting string would be > 200 chars.
9417 AE_STRING_LIMIT is now returned.
9419 Fixed a problem with the Concatenate operator where AE_OK was always
9420 returned, even if the operation failed.
9422 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
9423 semaphores to be allocated.
9425 Code and Data Size: Current and previous core subsystem library sizes are
9426 shown below. These are the code and data sizes for the acpica.lib
9428 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9429 any ACPI driver or OSPM code. The debug version of the code includes the
9430 debug output trace mechanism and has a much larger code and data size.
9432 that these values will vary depending on the efficiency of the compiler
9434 the compiler options used during generation.
9437 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9438 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9440 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9441 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9444 2) iASL Compiler/Disassembler:
9446 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
9447 recently introduced in 20041119.
9449 Fixed a problem with the ToUUID macro where the upper nybble of each
9451 byte was inadvertently set to zero.
9453 ----------------------------------------
9454 19 November 2004. Summary of changes for version 20041119:
9456 1) ACPI CA Core Subsystem:
9458 Fixed a problem in the internal ConvertToInteger routine where new
9460 were not truncated to 32 bits for 32-bit ACPI tables. This routine
9462 buffers and strings to integers.
9464 Implemented support to store a value to an Index() on a String object.
9466 is an ACPI 2.0 feature that had not yet been implemented.
9468 Implemented new behavior for storing objects to individual package
9470 (via the Index() operator). The previous behavior was to invoke the
9472 conversion rules if an object was already present at the index. The new
9473 behavior is to simply delete any existing object and directly store the
9475 object. Although the ACPI specification seems unclear on this subject,
9477 ACPI implementations behave in this manner. (This is the root of the
9478 AE_BAD_HEX_CONSTANT issue.)
9480 Modified the RSDP memory scan mechanism to support the extended checksum
9482 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
9483 RSDP signature is found with a valid checksum.
9485 Code and Data Size: Current and previous core subsystem library sizes are
9486 shown below. These are the code and data sizes for the acpica.lib
9488 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9489 any ACPI driver or OSPM code. The debug version of the code includes the
9490 debug output trace mechanism and has a much larger code and data size.
9492 that these values will vary depending on the efficiency of the compiler
9494 the compiler options used during generation.
9497 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9498 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9500 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9501 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9504 2) iASL Compiler/Disassembler:
9506 Fixed a missing semicolon in the aslcompiler.y file.
9508 ----------------------------------------
9509 05 November 2004. Summary of changes for version 20041105:
9511 1) ACPI CA Core Subsystem:
9513 Implemented support for FADT revision 2. This was an interim table
9515 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
9517 Implemented optional support to allow uninitialized LocalX and ArgX
9518 variables in a control method. The variables are initialized to an
9520 object with a value of zero. This support is enabled by setting the
9521 AcpiGbl_EnableInterpreterSlack flag to TRUE.
9523 Implemented support for Integer objects for the SizeOf operator. Either
9525 or 8 is returned, depending on the current integer size (32-bit or 64-
9527 depending on the parent table revision).
9529 Fixed a problem in the implementation of the SizeOf and ObjectType
9531 where the operand was resolved to a value too early, causing incorrect
9532 return values for some objects.
9534 Fixed some possible memory leaks during exceptional conditions.
9536 Code and Data Size: Current and previous core subsystem library sizes are
9537 shown below. These are the code and data sizes for the acpica.lib
9539 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9540 any ACPI driver or OSPM code. The debug version of the code includes the
9541 debug output trace mechanism and has a much larger code and data size.
9543 that these values will vary depending on the efficiency of the compiler
9545 the compiler options used during generation.
9548 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9549 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9551 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9552 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9555 2) iASL Compiler/Disassembler:
9557 Implemented support for all ACPI 3.0 reserved names and methods.
9559 Implemented all ACPI 3.0 grammar elements in the front-end, including
9560 support for semicolons.
9562 Implemented the ACPI 3.0 Function() and ToUUID() macros
9564 Fixed a problem in the disassembler where a Scope() operator would not be
9565 emitted properly if the target of the scope was in another table.
9567 ----------------------------------------
9568 15 October 2004. Summary of changes for version 20041015:
9570 Note: ACPI CA is currently undergoing an in-depth and complete formal
9571 evaluation to test/verify the following areas. Other suggestions are
9572 welcome. This will result in an increase in the frequency of releases and
9573 the number of bug fixes in the next few months.
9574 - Functional tests for all ASL/AML operators
9575 - All implicit/explicit type conversions
9576 - Bit fields and operation regions
9577 - 64-bit math support and 32-bit-only "truncated" math support
9578 - Exceptional conditions, both compiler and interpreter
9579 - Dynamic object deletion and memory leaks
9580 - ACPI 3.0 support when implemented
9581 - External interfaces to the ACPI subsystem
9584 1) ACPI CA Core Subsystem:
9586 Fixed two alignment issues on 64-bit platforms - within debug statements
9588 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
9590 field within the non-aligned ACPI generic address structure.
9592 Fixed a problem in the Increment and Decrement operators where incorrect
9593 operand resolution could result in the inadvertent modification of the
9594 original integer when the integer is passed into another method as an
9595 argument and the arg is then incremented/decremented.
9597 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
9599 BCD number were truncated during conversion.
9601 Fixed a problem in the ToDecimal operator where the length of the
9603 string could be set incorrectly too long if the input operand was a
9607 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
9609 within a buffer would prematurely terminate a compare between buffer
9612 Added a check for string overflow (>200 characters as per the ACPI
9613 specification) during the Concatenate operator with two string operands.
9615 Code and Data Size: Current and previous core subsystem library sizes are
9616 shown below. These are the code and data sizes for the acpica.lib
9618 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9619 any ACPI driver or OSPM code. The debug version of the code includes the
9620 debug output trace mechanism and has a much larger code and data size.
9622 that these values will vary depending on the efficiency of the compiler
9624 the compiler options used during generation.
9627 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9628 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9630 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9631 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9635 2) iASL Compiler/Disassembler:
9637 Allow the use of the ObjectType operator on uninitialized Locals and Args
9638 (returns 0 as per the ACPI specification).
9640 Fixed a problem where the compiler would fault if there was a syntax
9642 in the FieldName of all of the various CreateXXXField operators.
9644 Disallow the use of lower case letters within the EISAID macro, as per
9646 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
9648 U is an uppercase letter and N is a hex digit.
9651 ----------------------------------------
9652 06 October 2004. Summary of changes for version 20041006:
9654 1) ACPI CA Core Subsystem:
9656 Implemented support for the ACPI 3.0 Timer operator. This ASL function
9657 implements a 64-bit timer with 100 nanosecond granularity.
9659 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
9660 implement the ACPI 3.0 Timer operator. This allows the host OS to
9662 the timer with the best clock available. Also, it keeps the core
9664 out of the clock handling business, since the host OS (usually) performs
9667 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
9668 functions use a 64-bit address which is part of the packed ACPI Generic
9669 Address Structure. Since the structure is non-aligned, the alignment
9671 are now used to extract the address to a local variable before use.
9673 Fixed a problem where the ToInteger operator assumed all input strings
9675 hexadecimal. The operator now handles both decimal strings and hex
9677 (prefixed with "0x").
9679 Fixed a problem where the string length in the string object created as a
9680 result of the internal ConvertToString procedure could be incorrect. This
9681 potentially affected all implicit conversions and also the
9683 and ToHexString operators.
9685 Fixed two problems in the ToString operator. If the length parameter was
9686 zero, an incorrect string object was created and the value of the input
9687 length parameter was inadvertently changed from zero to Ones.
9689 Fixed a problem where the optional ResourceSource string in the
9691 resource macro was ignored.
9693 Simplified the interfaces to the internal division functions, reducing
9695 size and complexity.
9697 Code and Data Size: Current and previous core subsystem library sizes are
9698 shown below. These are the code and data sizes for the acpica.lib
9700 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9701 any ACPI driver or OSPM code. The debug version of the code includes the
9702 debug output trace mechanism and has a much larger code and data size.
9704 that these values will vary depending on the efficiency of the compiler
9706 the compiler options used during generation.
9709 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
9710 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
9712 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9713 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9716 2) iASL Compiler/Disassembler:
9718 Implemented support for the ACPI 3.0 Timer operator.
9720 Fixed a problem where the Default() operator was inadvertently ignored in
9722 Switch/Case block. This was a problem in the translation of the Switch
9723 statement to If...Else pairs.
9725 Added support to allow a standalone Return operator, with no parentheses
9729 Fixed a problem with code generation for the ElseIf operator where the
9730 translated Else...If parse tree was improperly constructed leading to the
9733 ----------------------------------------
9734 22 September 2004. Summary of changes for version 20040922:
9736 1) ACPI CA Core Subsystem:
9738 Fixed a problem with the implementation of the LNot() operator where
9740 was not returned for the TRUE case. Changed the code to return Ones
9742 of (!Arg) which was usually 1. This change affects iASL constant folding
9746 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
9748 initialized properly -- Now zero the entire buffer in this case where the
9749 buffer already exists.
9751 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
9752 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
9753 related code considerably. This will require changes/updates to all OS
9754 interface layers (OSLs.)
9756 Implemented a new external interface, AcpiInstallExceptionHandler, to
9758 a system exception handler to be installed. This handler is invoked upon
9760 run-time exception that occurs during control method execution.
9762 Added support for the DSDT in AcpiTbFindTable. This allows the
9763 DataTableRegion() operator to access the local copy of the DSDT.
9765 Code and Data Size: Current and previous core subsystem library sizes are
9766 shown below. These are the code and data sizes for the acpica.lib
9768 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9769 any ACPI driver or OSPM code. The debug version of the code includes the
9770 debug output trace mechanism and has a much larger code and data size.
9772 that these values will vary depending on the efficiency of the compiler
9774 the compiler options used during generation.
9777 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
9778 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
9780 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
9781 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
9784 2) iASL Compiler/Disassembler:
9786 Fixed a problem with constant folding and the LNot operator. LNot was
9787 returning 1 in the TRUE case, not Ones as per the ACPI specification.
9789 could result in the generation of an incorrect folded/reduced constant.
9791 End-Of-File is now allowed within a "//"-style comment. A parse error no
9792 longer occurs if such a comment is at the very end of the input ASL
9796 Implemented the "-r" option to override the Revision in the table header.
9797 The initial use of this option will be to simplify the evaluation of the
9799 interpreter by allowing a single ASL source module to be compiled for
9801 32-bit or 64-bit integers.
9804 ----------------------------------------
9805 27 August 2004. Summary of changes for version 20040827:
9807 1) ACPI CA Core Subsystem:
9809 - Implemented support for implicit object conversion in the non-numeric
9810 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
9812 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
9813 the second operand is implicitly converted on the fly to match the type
9815 the first operand. For example:
9817 LEqual (Source1, Source2)
9819 Source1 and Source2 must each evaluate to an integer, a string, or a
9821 The data type of Source1 dictates the required type of Source2. Source2
9823 implicitly converted if necessary to match the type of Source1.
9825 - Updated and corrected the behavior of the string conversion support.
9827 rules concerning conversion of buffers to strings (according to the ACPI
9828 specification) are as follows:
9830 ToDecimalString - explicit byte-wise conversion of buffer to string of
9831 decimal values (0-255) separated by commas. ToHexString - explicit byte-
9833 conversion of buffer to string of hex values (0-FF) separated by commas.
9834 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
9836 copy with no transform except NULL terminated. Any other implicit buffer-
9838 string conversion - byte-wise conversion of buffer to string of hex
9840 (0-FF) separated by spaces.
9842 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
9844 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
9846 one byte too short in the case of a node in the root scope. This could
9847 cause a fault during debug output.
9849 - Code and Data Size: Current and previous core subsystem library sizes
9851 shown below. These are the code and data sizes for the acpica.lib
9853 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9854 any ACPI driver or OSPM code. The debug version of the code includes the
9855 debug output trace mechanism and has a much larger code and data size.
9857 that these values will vary depending on the efficiency of the compiler
9859 the compiler options used during generation.
9862 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
9863 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
9865 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
9866 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
9869 2) iASL Compiler/Disassembler:
9871 - Fixed a Linux generation error.
9874 ----------------------------------------
9875 16 August 2004. Summary of changes for version 20040816:
9877 1) ACPI CA Core Subsystem:
9879 Designed and implemented support within the AML interpreter for the so-
9880 called "implicit return". This support returns the result of the last
9882 operation within a control method, in the absence of an explicit Return()
9883 operator. A few machines depend on this behavior, even though it is not
9884 explicitly supported by the ASL language. It is optional support that
9886 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
9888 Removed support for the PCI_Config address space from the internal low
9890 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
9891 support was not used internally, and would not work correctly anyway
9893 the PCI bus number and segment number were not supported. There are
9894 separate interfaces for PCI configuration space access because of the
9898 Code and Data Size: Current and previous core subsystem library sizes are
9899 shown below. These are the code and data sizes for the acpica.lib
9901 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9902 any ACPI driver or OSPM code. The debug version of the code includes the
9903 debug output trace mechanism and has a much larger code and data size.
9905 that these values will vary depending on the efficiency of the compiler
9907 the compiler options used during generation.
9910 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9911 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
9913 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
9914 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
9917 2) iASL Compiler/Disassembler:
9919 Fixed a problem where constants in ASL expressions at the root level (not
9920 within a control method) could be inadvertently truncated during code
9921 generation. This problem was introduced in the 20040715 release.
9924 ----------------------------------------
9925 15 July 2004. Summary of changes for version 20040715:
9927 1) ACPI CA Core Subsystem:
9929 Restructured the internal HW GPE interfaces to pass/track the current
9931 of interrupts (enabled/disabled) in order to avoid possible deadlock and
9932 increase flexibility of the interfaces.
9934 Implemented a "lexicographical compare" for String and Buffer objects
9936 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
9938 as per further clarification to the ACPI specification. Behavior is
9940 to C library "strcmp".
9942 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
9943 external function. In the 32-bit non-debug case, the stack use has been
9944 reduced from 168 bytes to 32 bytes.
9946 Deployed a new run-time configuration flag,
9947 AcpiGbl_EnableInterpreterSlack,
9948 whose purpose is to allow the AML interpreter to forgive certain bad AML
9949 constructs. Default setting is FALSE.
9951 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
9953 support code. If enabled, it allows field access to go beyond the end of
9955 region definition if the field is within the region length rounded up to
9957 next access width boundary (a common coding error.)
9959 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
9960 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
9962 symbols are lowercased by the latest version of the AcpiSrc tool.
9964 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
9965 rename "Register" to simply "Reg" to prevent certain compilers from
9968 Code and Data Size: Current and previous core subsystem library sizes are
9969 shown below. These are the code and data sizes for the acpica.lib
9971 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9972 any ACPI driver or OSPM code. The debug version of the code includes the
9973 debug output trace mechanism and has a much larger code and data size.
9975 that these values will vary depending on the efficiency of the compiler
9977 the compiler options used during generation.
9980 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9981 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
9983 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9984 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
9987 2) iASL Compiler/Disassembler:
9989 Implemented full support for Package objects within the Case() operator.
9990 Note: The Break() operator is currently not supported within Case blocks
9991 (TermLists) as there is some question about backward compatibility with
9996 Fixed a problem where complex terms were not supported properly within
10000 Eliminated extraneous warning for compiler-emitted reserved names of the
10001 form "_T_x". (Used in Switch/Case operators.)
10003 Eliminated optimization messages for "_T_x" objects and small constants
10004 within the DefinitionBlock operator.
10007 ----------------------------------------
10008 15 June 2004. Summary of changes for version 20040615:
10010 1) ACPI CA Core Subsystem:
10012 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10014 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10017 All directory names in the entire source package are lower case, as they
10018 were in earlier releases.
10020 Implemented "Disassemble" command in the AML debugger that will
10022 a single control method.
10024 Code and Data Size: Current and previous core subsystem library sizes are
10025 shown below. These are the code and data sizes for the acpica.lib
10027 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10028 any ACPI driver or OSPM code. The debug version of the code includes the
10029 debug output trace mechanism and has a much larger code and data size.
10031 that these values will vary depending on the efficiency of the compiler
10033 the compiler options used during generation.
10036 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10037 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10040 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10041 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10044 2) iASL Compiler/Disassembler:
10046 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10048 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10051 All directory names in the entire source package are lower case, as they
10052 were in earlier releases.
10054 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10057 Fixed an issue with the Windows version of the compiler where later
10059 of Windows place the FADT in the registry under the name "FADT" and not
10060 "FACP" as earlier versions did. This applies when using the -g or -
10061 d<nofilename> options. The compiler now looks for both strings as
10064 Fixed a problem with compiler namepath optimization where a namepath
10066 the Scope() operator could not be optimized if the namepath was a subpath
10068 the current scope path.
10070 ----------------------------------------
10071 27 May 2004. Summary of changes for version 20040527:
10073 1) ACPI CA Core Subsystem:
10075 Completed a new design and implementation for EBDA (Extended BIOS Data
10077 support in the RSDP scan code. The original code improperly scanned for
10079 EBDA by simply scanning from memory location 0 to 0x400. The correct
10081 is to first obtain the EBDA pointer from within the BIOS data area, then
10082 scan 1K of memory starting at the EBDA pointer. There appear to be few
10084 any machines that place the RSDP in the EBDA, however.
10086 Integrated a fix for a possible fault during evaluation of BufferField
10087 arguments. Obsolete code that was causing the problem was removed.
10089 Found and fixed a problem in the Field Support Code where data could be
10090 corrupted on a bit field read that starts on an aligned boundary but does
10091 not end on an aligned boundary. Merged the read/write "datum length"
10092 calculation code into a common procedure.
10094 Rolled in a couple of changes to the FreeBSD-specific header.
10097 Code and Data Size: Current and previous core subsystem library sizes are
10098 shown below. These are the code and data sizes for the acpica.lib
10100 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10101 any ACPI driver or OSPM code. The debug version of the code includes the
10102 debug output trace mechanism and has a much larger code and data size.
10104 that these values will vary depending on the efficiency of the compiler
10106 the compiler options used during generation.
10109 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10110 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10112 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10113 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10116 2) iASL Compiler/Disassembler:
10118 Fixed a generation warning produced by some overly-verbose compilers for
10122 ----------------------------------------
10123 14 May 2004. Summary of changes for version 20040514:
10125 1) ACPI CA Core Subsystem:
10127 Fixed a problem where hardware GPE enable bits sometimes not set properly
10128 during and after GPE method execution. Result of 04/27 changes.
10130 Removed extra "clear all GPEs" when sleeping/waking.
10132 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10133 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10135 the new AcpiEv* calls as appropriate.
10137 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10139 now "Microsoft Windows NT" for maximum compatibility. However this can
10141 changed by modifying the acconfig.h file.
10143 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10144 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10146 Run _INI methods on ThermalZone objects. This is against the ACPI
10147 specification, but there is apparently ASL code in the field that has
10149 _INI methods, and apparently "other" AML interpreters execute them.
10151 Performed a full 16/32/64 bit lint that resulted in some small changes.
10153 Added a sleep simulation command to the AML debugger to test sleep code.
10155 Code and Data Size: Current and previous core subsystem library sizes are
10156 shown below. These are the code and data sizes for the acpica.lib
10158 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10159 any ACPI driver or OSPM code. The debug version of the code includes the
10160 debug output trace mechanism and has a much larger code and data size.
10162 that these values will vary depending on the efficiency of the compiler
10164 the compiler options used during generation.
10167 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10168 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10170 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10171 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10173 ----------------------------------------
10174 27 April 2004. Summary of changes for version 20040427:
10176 1) ACPI CA Core Subsystem:
10178 Completed a major overhaul of the GPE handling within ACPI CA. There are
10179 now three types of GPEs: wake-only, runtime-only, and combination
10181 The only GPEs allowed to be combination wake/run are for button-style
10182 devices such as a control-method power button, control-method sleep
10184 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
10186 referenced by any _PRW methods are marked for "runtime" and hardware
10187 enabled. Any GPE that is referenced by a _PRW method is marked for
10189 (and disabled at runtime). However, at sleep time, only those GPEs that
10190 have been specifically enabled for wake via the AcpiEnableGpe interface
10192 actually be hardware enabled.
10194 A new external interface has been added, AcpiSetGpeType(), that is meant
10196 be used by device drivers to force a GPE to a particular type. It will
10198 especially useful for the drivers for the button devices mentioned above.
10200 Completed restructuring of the ACPI CA initialization sequence so that
10201 default operation region handlers are installed before GPEs are
10203 and the _PRW methods are executed. This will prevent errors when the
10205 methods attempt to access system memory or I/O space.
10207 GPE enable/disable no longer reads the GPE enable register. We now keep
10209 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
10210 thus no longer depend on the hardware to maintain these bits.
10212 Always clear the wake status and fixed/GPE status bits before sleep, even
10215 Improved the AML debugger output for displaying the GPE blocks and their
10218 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
10222 Fixed a problem where the physical address was incorrectly calculated
10224 the Load() operator was used to directly load from an Operation Region
10226 loading from a Field object.) Also added check for minimum table length
10230 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
10233 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
10234 consistency with the other fields returned.
10236 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
10237 structure for each GPE in the system, so the size of this structure is
10240 CPU stack requirement reduction: Cleaned up the method execution and
10242 evaluation paths so that now a parameter structure is passed, instead of
10243 copying the various method parameters over and over again.
10245 In evregion.c: Correctly exit and reenter the interpreter region if and
10246 only if dispatching an operation region request to a user-installed
10248 Do not exit/reenter when dispatching to a default handler (e.g., default
10249 system memory or I/O handlers)
10252 Notes for updating drivers for the new GPE support. The following
10254 must be made to ACPI-related device drivers that are attached to one or
10256 GPEs: (This information will be added to the ACPI CA Programmer
10259 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
10261 explicitly call AcpiEnableGpe.
10262 2) There is a new interface called AcpiSetGpeType. This should be called
10263 before enabling the GPE. Also, this interface will automatically disable
10264 the GPE if it is currently enabled.
10265 3) AcpiEnableGpe no longer supports a GPE type flag.
10267 Specific drivers that must be changed:
10269 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
10270 AeGpeHandler, NULL);
10271 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
10272 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
10274 2) Button Drivers (Power, Lid, Sleep):
10275 Run _PRW method under parent device
10276 If _PRW exists: /* This is a control-method button */
10277 Extract GPE number and possibly GpeDevice
10278 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
10279 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
10281 For all other devices that have _PRWs, we automatically set the GPE type
10283 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
10285 must be done on a selective basis, usually requiring some kind of user
10287 to allow the user to pick the wake devices.
10290 Code and Data Size: Current and previous core subsystem library sizes are
10291 shown below. These are the code and data sizes for the acpica.lib
10293 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10294 any ACPI driver or OSPM code. The debug version of the code includes the
10295 debug output trace mechanism and has a much larger code and data size.
10297 that these values will vary depending on the efficiency of the compiler
10299 the compiler options used during generation.
10302 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10303 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10306 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10307 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10311 ----------------------------------------
10312 02 April 2004. Summary of changes for version 20040402:
10314 1) ACPI CA Core Subsystem:
10316 Fixed an interpreter problem where an indirect store through an ArgX
10317 parameter was incorrectly applying the "implicit conversion rules" during
10318 the store. From the ACPI specification: "If the target is a method local
10320 argument (LocalX or ArgX), no conversion is performed and the result is
10321 stored directly to the target". The new behavior is to disable implicit
10322 conversion during ALL stores to an ArgX.
10324 Changed the behavior of the _PRW method scan to ignore any and all errors
10325 returned by a given _PRW. This prevents the scan from aborting from the
10326 failure of any single _PRW.
10328 Moved the runtime configuration parameters from the global init procedure
10330 static variables in acglobal.h. This will allow the host to override the
10331 default values easily.
10333 Code and Data Size: Current and previous core subsystem library sizes are
10334 shown below. These are the code and data sizes for the acpica.lib
10336 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10337 any ACPI driver or OSPM code. The debug version of the code includes the
10338 debug output trace mechanism and has a much larger code and data size.
10340 that these values will vary depending on the efficiency of the compiler
10342 the compiler options used during generation.
10345 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10346 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10348 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10349 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10352 2) iASL Compiler/Disassembler:
10354 iASL now fully disassembles SSDTs. However, External() statements are
10356 generated automatically for unresolved symbols at this time. This is a
10357 planned feature for future implementation.
10359 Fixed a scoping problem in the disassembler that occurs when the type of
10361 target of a Scope() operator is overridden. This problem caused an
10362 incorrectly nested internal namespace to be constructed.
10364 Any warnings or errors that are emitted during disassembly are now
10366 out automatically so that the resulting file can be recompiled without
10370 ----------------------------------------
10371 26 March 2004. Summary of changes for version 20040326:
10373 1) ACPI CA Core Subsystem:
10375 Implemented support for "wake" GPEs via interaction between GPEs and the
10376 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
10377 identified as a WAKE GPE and by default will no longer be enabled at
10378 runtime. Previously, we were blindly enabling all GPEs with a
10380 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
10382 believe this has been the cause of thousands of "spurious" GPEs on some
10385 This new GPE behavior is can be reverted to the original behavior (enable
10386 ALL GPEs at runtime) via a runtime flag.
10388 Fixed a problem where aliased control methods could not access objects
10389 properly. The proper scope within the namespace was not initialized
10390 (transferred to the target of the aliased method) before executing the
10393 Fixed a potential race condition on internal object deletion on the
10395 object in AcpiEvaluateObject.
10397 Integrated a fix for resource descriptors where both _MEM and _MTP were
10398 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
10399 wide, 0x0F instead of 0x03.)
10401 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
10404 fault in some cases.
10406 Updated Notify() values for debug statements in evmisc.c
10408 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
10410 Code and Data Size: Current and previous core subsystem library sizes are
10411 shown below. These are the code and data sizes for the acpica.lib
10413 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10414 any ACPI driver or OSPM code. The debug version of the code includes the
10415 debug output trace mechanism and has a much larger code and data size.
10417 that these values will vary depending on the efficiency of the compiler
10419 the compiler options used during generation.
10423 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10424 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10426 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10427 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10429 ----------------------------------------
10430 11 March 2004. Summary of changes for version 20040311:
10432 1) ACPI CA Core Subsystem:
10434 Fixed a problem where errors occurring during the parse phase of control
10435 method execution did not abort cleanly. For example, objects created and
10436 installed in the namespace were not deleted. This caused all subsequent
10437 invocations of the method to return the AE_ALREADY_EXISTS exception.
10439 Implemented a mechanism to force a control method to "Serialized"
10441 if the method attempts to create namespace objects. (The root of the
10442 AE_ALREADY_EXISTS problem.)
10444 Implemented support for the predefined _OSI "internal" control method.
10445 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
10447 "Windows 2001.1", and can be easily upgraded for new strings as
10449 This feature will allow "other" operating systems to execute the fully
10450 tested, "Windows" code path through the ASL code
10452 Global Lock Support: Now allows multiple acquires and releases with any
10453 internal thread. Removed concept of "owning thread" for this special
10456 Fixed two functions that were inappropriately declaring large objects on
10458 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
10460 method execution considerably.
10462 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
10463 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
10465 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
10466 defined on the machine.
10468 Implemented two runtime options: One to force all control method
10470 to "Serialized" to mimic Windows behavior, another to disable _OSI
10472 if it causes problems on a given machine.
10474 Code and Data Size: Current and previous core subsystem library sizes are
10475 shown below. These are the code and data sizes for the acpica.lib
10477 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10478 any ACPI driver or OSPM code. The debug version of the code includes the
10479 debug output trace mechanism and has a much larger code and data size.
10481 that these values will vary depending on the efficiency of the compiler
10483 the compiler options used during generation.
10486 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10487 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10489 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10490 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10492 2) iASL Compiler/Disassembler:
10494 Fixed an array size problem for FreeBSD that would cause the compiler to
10497 ----------------------------------------
10498 20 February 2004. Summary of changes for version 20040220:
10501 1) ACPI CA Core Subsystem:
10503 Implemented execution of _SxD methods for Device objects in the
10504 GetObjectInfo interface.
10506 Fixed calls to _SST method to pass the correct arguments.
10508 Added a call to _SST on wake to restore to "working" state.
10510 Check for End-Of-Buffer failure case in the WalkResources interface.
10512 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
10513 structures to the beginning of the file.
10515 After wake, clear GPE status register(s) before enabling GPEs.
10517 After wake, clear/enable power button. (Perhaps we should clear/enable
10519 fixed events upon wake.)
10521 Fixed a couple of possible memory leaks in the Namespace manager.
10523 Integrated latest acnetbsd.h file.
10525 ----------------------------------------
10526 11 February 2004. Summary of changes for version 20040211:
10529 1) ACPI CA Core Subsystem:
10531 Completed investigation and implementation of the call-by-reference
10532 mechanism for control method arguments.
10534 Fixed a problem where a store of an object into an indexed package could
10535 fail if the store occurs within a different method than the method that
10536 created the package.
10538 Fixed a problem where the ToDecimal operator could return incorrect
10541 Fixed a problem where the CopyObject operator could fail on some of the
10543 obscure objects (e.g., Reference objects.)
10545 Improved the output of the Debug object to display buffer, package, and
10548 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
10550 the expected result.
10552 Added permanent ACPI_REPORT_ERROR macros for all instances of the
10553 ACPI_AML_INTERNAL exception.
10555 Integrated latest version of acfreebsd.h
10557 ----------------------------------------
10558 16 January 2004. Summary of changes for version 20040116:
10560 The purpose of this release is primarily to update the copyright years in
10561 each module, thus causing a huge number of diffs. There are a few small
10562 functional changes, however.
10564 1) ACPI CA Core Subsystem:
10566 Improved error messages when there is a problem finding one or more of
10568 required base ACPI tables
10570 Reintroduced the definition of APIC_HEADER in actbl.h
10572 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
10574 Removed extraneous reference to NewObj in dsmthdat.c
10578 Fixed a problem introduced in December that disabled the correct
10580 of Resource Templates
10583 ----------------------------------------
10584 03 December 2003. Summary of changes for version 20031203:
10586 1) ACPI CA Core Subsystem:
10588 Changed the initialization of Operation Regions during subsystem
10589 init to perform two entire walks of the ACPI namespace; The first
10590 to initialize the regions themselves, the second to execute the
10591 _REG methods. This fixed some interdependencies across _REG
10592 methods found on some machines.
10594 Fixed a problem where a Store(Local0, Local1) could simply update
10595 the object reference count, and not create a new copy of the
10596 object if the Local1 is uninitialized.
10598 Implemented support for the _SST reserved method during sleep
10601 Implemented support to clear the SLP_TYP and SLP_EN bits when
10602 waking up, this is apparently required by some machines.
10604 When sleeping, clear the wake status only if SleepState is not S5.
10606 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
10607 pointer arithmetic advanced a string pointer too far.
10609 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
10610 could be returned if the requested table has not been loaded.
10612 Within the support for IRQ resources, restructured the handling of
10613 the active and edge/level bits.
10615 Fixed a few problems in AcpiPsxExecute() where memory could be
10616 leaked under certain error conditions.
10618 Improved error messages for the cases where the ACPI mode could
10621 Code and Data Size: Current and previous core subsystem library
10622 sizes are shown below. These are the code and data sizes for the
10623 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10624 these values do not include any ACPI driver or OSPM code. The
10625 debug version of the code includes the debug output trace
10626 mechanism and has a much larger code and data size. Note that
10627 these values will vary depending on the efficiency of the compiler
10628 and the compiler options used during generation.
10630 Previous Release (20031029):
10631 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10632 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10634 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10635 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10637 2) iASL Compiler/Disassembler:
10639 Implemented a fix for the iASL disassembler where a bad index was
10640 generated. This was most noticeable on 64-bit platforms
10643 ----------------------------------------
10644 29 October 2003. Summary of changes for version 20031029:
10646 1) ACPI CA Core Subsystem:
10649 Fixed a problem where a level-triggered GPE with an associated
10650 _Lxx control method was incorrectly cleared twice.
10652 Fixed a problem with the Field support code where an access can
10653 occur beyond the end-of-region if the field is non-aligned but
10654 extends to the very end of the parent region (resulted in an
10655 AE_AML_REGION_LIMIT exception.)
10657 Fixed a problem with ACPI Fixed Events where an RT Clock handler
10658 would not get invoked on an RTC event. The RTC event bitmasks for
10659 the PM1 registers were not being initialized properly.
10661 Implemented support for executing _STA and _INI methods for
10662 Processor objects. Although this is currently not part of the
10663 ACPI specification, there is existing ASL code that depends on the
10664 init-time execution of these methods.
10666 Implemented and deployed a GetDescriptorName function to decode
10667 the various types of internal descriptors. Guards against null
10668 descriptors during debug output also.
10670 Implemented and deployed a GetNodeName function to extract the 4-
10671 character namespace node name. This function simplifies the debug
10672 and error output, as well as guarding against null pointers during
10675 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
10676 simplify the debug and error output of 64-bit integers. This
10677 macro replaces the HIDWORD and LODWORD macros for dumping these
10680 Updated the implementation of the Stall() operator to only call
10681 AcpiOsStall(), and also return an error if the operand is larger
10682 than 255. This preserves the required behavior of not
10683 relinquishing the processor, as would happen if AcpiOsSleep() was
10684 called for "long stalls".
10686 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
10687 initialized are now treated as NOOPs.
10689 Cleaned up a handful of warnings during 64-bit generation.
10691 Fixed a reported error where and incorrect GPE number was passed
10692 to the GPE dispatch handler. This value is only used for error
10693 output, however. Used this opportunity to clean up and streamline
10694 the GPE dispatch code.
10696 Code and Data Size: Current and previous core subsystem library
10697 sizes are shown below. These are the code and data sizes for the
10698 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10699 these values do not include any ACPI driver or OSPM code. The
10701 debug version of the code includes the debug output trace
10702 mechanism and has a much larger code and data size. Note that
10703 these values will vary depending on the efficiency of the compiler
10704 and the compiler options used during generation.
10706 Previous Release (20031002):
10707 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
10708 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
10710 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10711 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10714 2) iASL Compiler/Disassembler:
10716 Updated the iASL compiler to return an error if the operand to the
10717 Stall() operator is larger than 255.
10720 ----------------------------------------
10721 02 October 2003. Summary of changes for version 20031002:
10724 1) ACPI CA Core Subsystem:
10726 Fixed a problem with Index Fields where the index was not
10727 incremented for fields that require multiple writes to the
10728 index/data registers (Fields that are wider than the data
10731 Fixed a problem with all Field objects where a write could go
10732 beyond the end-of-field if the field was larger than the access
10733 granularity and therefore required multiple writes to complete the
10734 request. An extra write beyond the end of the field could happen
10737 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
10738 would incorrectly be returned if the width of the Data Register
10739 was larger than the specified field access width.
10741 Completed fixes for LoadTable() and Unload() and verified their
10742 operation. Implemented full support for the "DdbHandle" object
10743 throughout the ACPI CA subsystem.
10745 Implemented full support for the MADT and ECDT tables in the ACPI
10746 CA header files. Even though these tables are not directly
10747 consumed by ACPI CA, the header definitions are useful for ACPI
10750 Integrated resource descriptor fixes posted to the Linux ACPI
10751 list. This included checks for minimum descriptor length, and
10752 support for trailing NULL strings within descriptors that have
10753 optional string elements.
10755 Code and Data Size: Current and previous core subsystem library
10756 sizes are shown below. These are the code and data sizes for the
10757 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10758 these values do not include any ACPI driver or OSPM code. The
10759 debug version of the code includes the debug output trace
10760 mechanism and has a much larger code and data size. Note that
10761 these values will vary depending on the efficiency of the compiler
10762 and the compiler options used during generation.
10764 Previous Release (20030918):
10765 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
10766 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
10768 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
10769 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
10774 Implemented detection of non-ASCII characters within the input
10775 source ASL file. This catches attempts to compile binary (AML)
10776 files early in the compile, with an informative error message.
10778 Fixed a problem where the disassembler would fault if the output
10779 filename could not be generated or if the output file could not be
10782 ----------------------------------------
10783 18 September 2003. Summary of changes for version 20030918:
10786 1) ACPI CA Core Subsystem:
10788 Found and fixed a longstanding problem with the late execution of
10789 the various deferred AML opcodes (such as Operation Regions,
10790 Buffer Fields, Buffers, and Packages). If the name string
10791 specified for the name of the new object placed the object in a
10792 scope other than the current scope, the initialization/execution
10793 of the opcode failed. The solution to this problem was to
10794 implement a mechanism where the late execution of such opcodes
10795 does not attempt to lookup/create the name a second time in an
10796 incorrect scope. This fixes the "region size computed
10797 incorrectly" problem.
10799 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
10800 Global Lock AE_BAD_PARAMETER error.
10802 Fixed several 64-bit issues with prototypes, casting and data
10805 Removed duplicate prototype from acdisasm.h
10807 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
10809 Code and Data Size: Current and previous core subsystem library
10810 sizes are shown below. These are the code and data sizes for the
10811 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10812 these values do not include any ACPI driver or OSPM code. The
10813 debug version of the code includes the debug output trace
10814 mechanism and has a much larger code and data size. Note that
10815 these values will vary depending on the efficiency of the compiler
10816 and the compiler options used during generation.
10820 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
10821 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
10823 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
10824 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
10829 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
10830 correct sleep time in seconds.
10832 ----------------------------------------
10833 14 July 2003. Summary of changes for version 20030619:
10835 1) ACPI CA Core Subsystem:
10837 Parse SSDTs in order discovered, as opposed to reverse order
10840 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
10847 Dynamically allocate SDT list (suggested by Andi Kleen)
10849 proc function return value cleanups (Andi Kleen)
10851 Correctly handle NMI watchdog during long stalls (Andrew Morton)
10853 Make it so acpismp=force works (reported by Andrew Morton)
10856 ----------------------------------------
10857 19 June 2003. Summary of changes for version 20030619:
10859 1) ACPI CA Core Subsystem:
10861 Fix To/FromBCD, eliminating the need for an arch-specific #define.
10863 Do not acquire a semaphore in the S5 shutdown path.
10865 Fix ex_digits_needed for 0. (Takayoshi Kochi)
10867 Fix sleep/stall code reversal. (Andi Kleen)
10869 Revert a change having to do with control method calling
10874 acpiphp update (Takayoshi Kochi)
10876 Export acpi_disabled for sonypi (Stelian Pop)
10878 Mention acpismp=force in config help
10880 Re-add acpitable.c and acpismp=force. This improves backwards
10882 compatibility and also cleans up the code to a significant degree.
10884 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
10886 ----------------------------------------
10887 22 May 2003. Summary of changes for version 20030522:
10889 1) ACPI CA Core Subsystem:
10891 Found and fixed a reported problem where an AE_NOT_FOUND error
10892 occurred occasionally during _BST evaluation. This turned out to
10893 be an Owner ID allocation issue where a called method did not get
10894 a new ID assigned to it. Eventually, (after 64k calls), the Owner
10895 ID UINT16 would wraparound so that the ID would be the same as the
10896 caller's and the called method would delete the caller's
10899 Implemented extended error reporting for control methods that are
10900 aborted due to a run-time exception. Output includes the exact
10901 AML instruction that caused the method abort, a dump of the method
10902 locals and arguments at the time of the abort, and a trace of all
10903 nested control method calls.
10905 Modified the interpreter to allow the creation of buffers of zero
10906 length from the AML code. Implemented new code to ensure that no
10907 attempt is made to actually allocate a memory buffer (of length
10908 zero) - instead, a simple buffer object with a NULL buffer pointer
10909 and length zero is created. A warning is no longer issued when
10910 the AML attempts to create a zero-length buffer.
10912 Implemented a workaround for the "leading asterisk issue" in
10913 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
10914 asterisk is automatically removed if present in any HID, UID, or
10915 CID strings. The iASL compiler will still flag this asterisk as
10918 Implemented full support for _CID methods that return a package of
10919 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
10920 now additionally returns a device _CID list if present. This
10921 required a change to the external interface in order to pass an
10922 ACPI_BUFFER object as a parameter since the _CID list is of
10925 Fixed a problem with the new AE_SAME_HANDLER exception where
10926 handler initialization code did not know about this exception.
10928 Code and Data Size: Current and previous core subsystem library
10929 sizes are shown below. These are the code and data sizes for the
10930 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10931 these values do not include any ACPI driver or OSPM code. The
10932 debug version of the code includes the debug output trace
10933 mechanism and has a much larger code and data size. Note that
10934 these values will vary depending on the efficiency of the compiler
10935 and the compiler options used during generation.
10937 Previous Release (20030509):
10938 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
10939 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
10941 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
10942 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
10947 Fixed a bug in which we would reinitialize the ACPI interrupt
10948 after it was already working, thus disabling all ACPI and the IRQs
10949 for any other device sharing the interrupt. (Thanks to Stian
10952 Toshiba driver update (John Belmonte)
10954 Return only 0 or 1 for our interrupt handler status (Andrew
10960 Fixed a reported problem where multiple (nested) ElseIf()
10961 statements were not handled correctly by the compiler, resulting
10962 in incorrect warnings and incorrect AML code. This was a problem
10963 in both the ASL parser and the code generator.
10968 Added changes to existing interfaces, new exception codes, and new
10969 text concerning reference count object management versus garbage
10972 ----------------------------------------
10973 09 May 2003. Summary of changes for version 20030509.
10976 1) ACPI CA Core Subsystem:
10978 Changed the subsystem initialization sequence to hold off
10979 installation of address space handlers until the hardware has been
10980 initialized and the system has entered ACPI mode. This is because
10981 the installation of space handlers can cause _REG methods to be
10982 run. Previously, the _REG methods could potentially be run before
10983 ACPI mode was enabled.
10985 Fixed some memory leak issues related to address space handler and
10986 notify handler installation. There were some problems with the
10987 reference count mechanism caused by the fact that the handler
10988 objects are shared across several namespace objects.
10990 Fixed a reported problem where reference counts within the
10991 namespace were not properly updated when named objects created by
10992 method execution were deleted.
10994 Fixed a reported problem where multiple SSDTs caused a deletion
10995 issue during subsystem termination. Restructured the table data
10996 structures to simplify the linked lists and the related code.
10998 Fixed a problem where the table ID associated with secondary
10999 tables (SSDTs) was not being propagated into the namespace objects
11000 created by those tables. This would only present a problem for
11001 tables that are unloaded at run-time, however.
11003 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11004 type as the length parameter (instead of UINT32).
11006 Solved a long-standing problem where an ALREADY_EXISTS error
11007 appears on various systems. This problem could happen when there
11008 are multiple PCI_Config operation regions under a single PCI root
11009 bus. This doesn't happen very frequently, but there are some
11010 systems that do this in the ASL.
11012 Fixed a reported problem where the internal DeleteNode function
11013 was incorrectly handling the case where a namespace node was the
11014 first in the parent's child list, and had additional peers (not
11015 the only child, but first in the list of children.)
11017 Code and Data Size: Current core subsystem library sizes are shown
11018 below. These are the code and data sizes for the acpica.lib
11019 produced by the Microsoft Visual C++ 6.0 compiler, and these
11020 values do not include any ACPI driver or OSPM code. The debug
11021 version of the code includes the debug output trace mechanism and
11022 has a much larger code and data size. Note that these values will
11023 vary depending on the efficiency of the compiler and the compiler
11024 options used during generation.
11027 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11028 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11030 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11031 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11036 Allow ":" in OS override string (Ducrot Bruno)
11038 Kobject fix (Greg KH)
11041 3 iASL Compiler/Disassembler:
11043 Fixed a problem in the generation of the C source code files (AML
11044 is emitted in C source statements for BIOS inclusion) where the
11045 Ascii dump that appears within a C comment at the end of each line
11046 could cause a compile time error if the AML sequence happens to
11047 have an open comment or close comment sequence embedded.
11050 ----------------------------------------
11051 24 April 2003. Summary of changes for version 20030424.
11054 1) ACPI CA Core Subsystem:
11056 Support for big-endian systems has been implemented. Most of the
11057 support has been invisibly added behind big-endian versions of the
11058 ACPI_MOVE_* macros.
11060 Fixed a problem in AcpiHwDisableGpeBlock() and
11061 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11062 low level hardware write routine. The offset parameter was
11063 actually eliminated from the low level read/write routines because
11064 they had become obsolete.
11066 Fixed a problem where a handler object was deleted twice during
11067 the removal of a fixed event handler.
11072 A fix for SMP systems with link devices was contributed by
11076 (2.5) Return whether we handled the interrupt in our IRQ handler.
11077 (Linux ISRs no longer return void, so we can propagate the handler
11078 return value from the ACPI CA core back to the OS.)
11084 The ACPI CA Programmer Reference has been updated to reflect new
11085 interfaces and changes to existing interfaces.
11087 ----------------------------------------
11088 28 March 2003. Summary of changes for version 20030328.
11090 1) ACPI CA Core Subsystem:
11092 The GPE Block Device support has been completed. New interfaces
11093 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11094 interfaces (enable, disable, clear, getstatus) have been split
11095 into separate interfaces for Fixed Events and General Purpose
11096 Events (GPEs) in order to support GPE Block Devices properly.
11098 Fixed a problem where the error message "Failed to acquire
11099 semaphore" would appear during operations on the embedded
11102 Code and Data Size: Current core subsystem library sizes are shown
11103 below. These are the code and data sizes for the acpica.lib
11104 produced by the Microsoft Visual C++ 6.0 compiler, and these
11105 values do not include any ACPI driver or OSPM code. The debug
11106 version of the code includes the debug output trace mechanism and
11107 has a much larger code and data size. Note that these values will
11108 vary depending on the efficiency of the compiler and the compiler
11109 options used during generation.
11112 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11113 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11115 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11116 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11119 ----------------------------------------
11120 28 February 2003. Summary of changes for version 20030228.
11123 1) ACPI CA Core Subsystem:
11125 The GPE handling and dispatch code has been completely overhauled
11126 in preparation for support of GPE Block Devices (ID ACPI0006).
11127 This affects internal data structures and code only; there should
11128 be no differences visible externally. One new file has been
11131 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11132 fields that are used to determine the GPE block lengths. The
11133 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11134 structures are ignored. This is per the ACPI specification but it
11135 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11136 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11138 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11139 register to look at the SCI_EN bit. On some machines, this read
11140 causes an SMI event and greatly slows down SCI events. (This may
11141 in fact be the cause of slow battery status response on some
11144 Fixed a problem where a store of a NULL string to a package object
11145 could cause the premature deletion of the object. This was seen
11146 during execution of the battery _BIF method on some systems,
11147 resulting in no battery data being returned.
11149 Added AcpiWalkResources interface to simplify parsing of resource
11152 Code and Data Size: Current core subsystem library sizes are shown
11153 below. These are the code and data sizes for the acpica.lib
11154 produced by the Microsoft Visual C++ 6.0 compiler, and these
11155 values do not include any ACPI driver or OSPM code. The debug
11156 version of the code includes the debug output trace mechanism and
11157 has a much larger code and data size. Note that these values will
11158 vary depending on the efficiency of the compiler and the compiler
11159 options used during generation.
11162 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11163 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11165 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11166 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11171 S3 fixes (Ole Rohne)
11173 Update ACPI PHP driver with to use new acpi_walk_resource API
11176 Add S4BIOS support (Pavel Machek)
11178 Map in entire table before performing checksum (John Stultz)
11180 Expand the mem= cmdline to allow the specification of reserved and
11181 ACPI DATA blocks (Pavel Machek)
11183 Never use ACPI on VISWS
11185 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
11187 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
11188 causing us to think that some systems support C2 when they really
11191 Do not count processor objects for non-present CPUs (Thanks to
11197 Fixed a problem where ASL include files could not be found and
11200 Added support for the _PDC reserved name.
11203 ----------------------------------------
11204 22 January 2003. Summary of changes for version 20030122.
11207 1) ACPI CA Core Subsystem:
11209 Added a check for constructs of the form: Store (Local0, Local0)
11210 where Local0 is not initialized. Apparently, some BIOS
11211 programmers believe that this is a NOOP. Since this store doesn't
11212 do anything anyway, the new prototype behavior will ignore this
11213 error. This is a case where we can relax the strict checking in
11214 the interpreter in the name of compatibility.
11219 The AcpiSrc Source Conversion Utility has been released with the
11220 Linux package for the first time. This is the utility that is
11221 used to convert the ACPI CA base source code to the Linux version.
11223 (Both) Handle P_BLK lengths shorter than 6 more gracefully
11225 (Both) Move more headers to include/acpi, and delete an unused
11228 (Both) Move drivers/acpi/include directory to include/acpi
11230 (Both) Boot functions don't use cmdline, so don't pass it around
11232 (Both) Remove include of unused header (Adrian Bunk)
11234 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
11236 former now also includes the latter, acpiphp.h only needs the one,
11239 (2.5) Make it possible to select method of bios restoring after S3
11240 resume. [=> no more ugly ifdefs] (Pavel Machek)
11242 (2.5) Make proc write interfaces work (Pavel Machek)
11244 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
11246 (2.5) Break out ACPI Perf code into its own module, under cpufreq
11247 (Dominik Brodowski)
11249 (2.4) S4BIOS support (Ducrot Bruno)
11251 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
11257 Added support to disassemble SSDT and PSDTs.
11259 Implemented support to obtain SSDTs from the Windows registry if
11263 ----------------------------------------
11264 09 January 2003. Summary of changes for version 20030109.
11266 1) ACPI CA Core Subsystem:
11268 Changed the behavior of the internal Buffer-to-String conversion
11269 function. The current ACPI specification states that the contents
11270 of the buffer are "converted to a string of two-character
11271 hexadecimal numbers, each separated by a space". Unfortunately,
11272 this definition is not backwards compatible with existing ACPI 1.0
11273 implementations (although the behavior was not defined in the ACPI
11274 1.0 specification). The new behavior simply copies data from the
11275 buffer to the string until a null character is found or the end of
11276 the buffer is reached. The new String object is always null
11277 terminated. This problem was seen during the generation of _BIF
11278 battery data where incorrect strings were returned for battery
11279 type, etc. This will also require an errata to the ACPI
11282 Renamed all instances of NATIVE_UINT and NATIVE_INT to
11283 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
11285 Copyright in all module headers (both Linux and non-Linux) has be
11288 Code and Data Size: Current core subsystem library sizes are shown
11289 below. These are the code and data sizes for the acpica.lib
11290 produced by the Microsoft Visual C++ 6.0 compiler, and these
11291 values do not include any ACPI driver or OSPM code. The debug
11292 version of the code includes the debug output trace mechanism and
11293 has a much larger code and data size. Note that these values will
11294 vary depending on the efficiency of the compiler and the compiler
11295 options used during generation.
11298 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11299 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11301 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11302 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11307 Fixed an oops on module insertion/removal (Matthew Tippett)
11309 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
11311 (2.5) Replace pr_debug (Randy Dunlap)
11313 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
11315 (Both) Eliminate spawning of thread from timer callback, in favor
11318 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
11320 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
11322 (Both) Add missing statics to button.c (Pavel Machek)
11324 Several changes have been made to the source code translation
11325 utility that generates the Linux Code in order to make the code
11328 All typedefs on structs and unions have been removed in keeping
11329 with the Linux coding style.
11331 Removed the non-Linux SourceSafe module revision number from each
11334 Completed major overhaul of symbols to be lowercased for linux.
11335 Doubled the number of symbols that are lowercased.
11337 Fixed a problem where identifiers within procedure headers and
11338 within quotes were not fully lower cased (they were left with a
11341 Some C macros whose only purpose is to allow the generation of 16-
11342 bit code are now completely removed in the Linux code, increasing
11343 readability and maintainability.
11345 ----------------------------------------
11347 12 December 2002. Summary of changes for version 20021212.
11350 1) ACPI CA Core Subsystem:
11352 Fixed a problem where the creation of a zero-length AML Buffer
11353 would cause a fault.
11355 Fixed a problem where a Buffer object that pointed to a static AML
11356 buffer (in an ACPI table) could inadvertently be deleted, causing
11359 Fixed a problem where a user buffer (passed in to the external
11360 ACPI CA interfaces) could be overwritten if the buffer was too
11361 small to complete the operation, causing memory corruption.
11363 Fixed a problem in the Buffer-to-String conversion code where a
11364 string of length one was always returned, regardless of the size
11365 of the input Buffer object.
11367 Removed the NATIVE_CHAR data type across the entire source due to
11368 lack of need and lack of consistent use.
11370 Code and Data Size: Current core subsystem library sizes are shown
11371 below. These are the code and data sizes for the acpica.lib
11372 produced by the Microsoft Visual C++ 6.0 compiler, and these
11373 values do not include any ACPI driver or OSPM code. The debug
11374 version of the code includes the debug output trace mechanism and
11375 has a much larger code and data size. Note that these values will
11376 vary depending on the efficiency of the compiler and the compiler
11377 options used during generation.
11380 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11381 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11383 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11384 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11387 ----------------------------------------
11388 05 December 2002. Summary of changes for version 20021205.
11390 1) ACPI CA Core Subsystem:
11392 Fixed a problem where a store to a String or Buffer object could
11393 cause corruption of the DSDT if the object type being stored was
11394 the same as the target object type and the length of the object
11395 being stored was equal to or smaller than the original (existing)
11396 target object. This was seen to cause corruption of battery _BIF
11397 buffers if the _BIF method modified the buffer on the fly.
11399 Fixed a problem where an internal error was generated if a control
11400 method invocation was used in an OperationRegion, Buffer, or
11401 Package declaration. This was caused by the deferred parsing of
11402 the control method and thus the deferred creation of the internal
11403 method object. The solution to this problem was to create the
11404 internal method object at the moment the method is encountered in
11405 the first pass - so that subsequent references to the method will
11406 able to obtain the required parameter count and thus properly
11407 parse the method invocation. This problem presented itself as an
11408 AE_AML_INTERNAL during the pass 1 parse phase during table load.
11410 Fixed a problem where the internal String object copy routine did
11411 not always allocate sufficient memory for the target String object
11412 and caused memory corruption. This problem was seen to cause
11413 "Allocation already present in list!" errors as memory allocation
11416 Implemented a new function for the evaluation of namespace objects
11417 that allows the specification of the allowable return object
11418 types. This simplifies a lot of code that checks for a return
11419 object of one or more specific objects returned from the
11420 evaluation (such as _STA, etc.) This may become and external
11421 function if it would be useful to ACPI-related drivers.
11423 Completed another round of prefixing #defines with "ACPI_" for
11426 Completed additional code restructuring to allow more modular
11427 linking for iASL compiler and AcpiExec. Several files were split
11428 creating new files. New files: nsparse.c dsinit.c evgpe.c
11430 Implemented an abort mechanism to terminate an executing control
11431 method via the AML debugger. This feature is useful for debugging
11432 control methods that depend (wait) for specific hardware
11435 Code and Data Size: Current core subsystem library sizes are shown
11436 below. These are the code and data sizes for the acpica.lib
11437 produced by the Microsoft Visual C++ 6.0 compiler, and these
11438 values do not include any ACPI driver or OSPM code. The debug
11439 version of the code includes the debug output trace mechanism and
11440 has a much larger code and data size. Note that these values will
11441 vary depending on the efficiency of the compiler and the compiler
11442 options used during generation.
11445 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11446 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11448 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11449 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11452 2) iASL Compiler/Disassembler
11454 Fixed a compiler code generation problem for "Interrupt" Resource
11455 Descriptors. If specified in the ASL, the optional "Resource
11456 Source Index" and "Resource Source" fields were not inserted into
11457 the correct location within the AML resource descriptor, creating
11458 an invalid descriptor.
11460 Fixed a disassembler problem for "Interrupt" resource descriptors.
11461 The optional "Resource Source Index" and "Resource Source" fields
11465 ----------------------------------------
11466 22 November 2002. Summary of changes for version 20021122.
11469 1) ACPI CA Core Subsystem:
11471 Fixed a reported problem where an object stored to a Method Local
11472 or Arg was not copied to a new object during the store - the
11473 object pointer was simply copied to the Local/Arg. This caused
11474 all subsequent operations on the Local/Arg to also affect the
11475 original source of the store operation.
11477 Fixed a problem where a store operation to a Method Local or Arg
11478 was not completed properly if the Local/Arg contained a reference
11479 (from RefOf) to a named field. The general-purpose store-to-
11480 namespace-node code is now used so that this case is handled
11483 Fixed a problem where the internal object copy routine would cause
11484 a protection fault if the object being copied was a Package and
11485 contained either 1) a NULL package element or 2) a nested sub-
11488 Fixed a problem with the GPE initialization that resulted from an
11489 ambiguity in the ACPI specification. One section of the
11490 specification states that both the address and length of the GPE
11491 block must be zero if the block is not supported. Another section
11492 implies that only the address need be zero if the block is not
11493 supported. The code has been changed so that both the address and
11494 the length must be non-zero to indicate a valid GPE block (i.e.,
11495 if either the address or the length is zero, the GPE block is
11498 Code and Data Size: Current core subsystem library sizes are shown
11499 below. These are the code and data sizes for the acpica.lib
11500 produced by the Microsoft Visual C++ 6.0 compiler, and these
11501 values do not include any ACPI driver or OSPM code. The debug
11502 version of the code includes the debug output trace mechanism and
11503 has a much larger code and data size. Note that these values will
11504 vary depending on the efficiency of the compiler and the compiler
11505 options used during generation.
11508 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11509 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11511 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11512 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11517 Cleaned up EC driver. Exported an external EC read/write
11518 interface. By going through this, other drivers (most notably
11519 sonypi) will be able to serialize access to the EC.
11522 3) iASL Compiler/Disassembler
11524 Implemented support to optionally generate include files for both
11525 ASM and C (the -i switch). This simplifies BIOS development by
11526 automatically creating include files that contain external
11527 declarations for the symbols that are created within the
11529 (optionally generated) ASM and C AML source files.
11532 ----------------------------------------
11533 15 November 2002. Summary of changes for version 20021115.
11535 1) ACPI CA Core Subsystem:
11537 Fixed a memory leak problem where an error during resolution of
11539 method arguments during a method invocation from another method
11540 failed to cleanup properly by deleting all successfully resolved
11543 Fixed a problem where the target of the Index() operator was not
11544 correctly constructed if the source object was a package. This
11545 problem has not been detected because the use of a target operand
11546 with Index() is very rare.
11548 Fixed a problem with the Index() operator where an attempt was
11549 made to delete the operand objects twice.
11551 Fixed a problem where an attempt was made to delete an operand
11552 twice during execution of the CondRefOf() operator if the target
11555 Implemented the first of perhaps several internal create object
11556 functions that create and initialize a specific object type. This
11557 consolidates duplicated code wherever the object is created, thus
11558 shrinking the size of the subsystem.
11560 Implemented improved debug/error messages for errors that occur
11561 during nested method invocations. All executing method pathnames
11562 are displayed (with the error) as the call stack is unwound - thus
11565 Fixed a problem introduced in the 10/02 release that caused
11566 premature deletion of a buffer object if a buffer was used as an
11567 ASL operand where an integer operand is required (Thus causing an
11568 implicit object conversion from Buffer to Integer.) The change in
11569 the 10/02 release was attempting to fix a memory leak (albeit
11572 Code and Data Size: Current core subsystem library sizes are shown
11573 below. These are the code and data sizes for the acpica.lib
11574 produced by the Microsoft Visual C++ 6.0 compiler, and these
11575 values do not include any ACPI driver or OSPM code. The debug
11576 version of the code includes the debug output trace mechanism and
11577 has a much larger code and data size. Note that these values will
11578 vary depending on the efficiency of the compiler and the compiler
11579 options used during generation.
11582 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11583 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11585 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11586 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11591 Changed the implementation of the ACPI semaphores to use down()
11592 instead of down_interruptable(). It is important that the
11593 execution of ACPI control methods not be interrupted by signals.
11594 Methods must run to completion, or the system may be left in an
11595 unknown/unstable state.
11597 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
11601 3) iASL Compiler/Disassembler
11604 Changed the default location of output files. All output files
11605 are now placed in the current directory by default instead of in
11606 the directory of the source file. This change may affect some
11607 existing makefiles, but it brings the behavior of the compiler in
11608 line with other similar tools. The location of the output files
11609 can be overridden with the -p command line switch.
11612 ----------------------------------------
11613 11 November 2002. Summary of changes for version 20021111.
11616 0) ACPI Specification 2.0B is released and is now available at:
11617 http://www.acpi.info/index.html
11620 1) ACPI CA Core Subsystem:
11622 Implemented support for the ACPI 2.0 SMBus Operation Regions.
11623 This includes the early detection and handoff of the request to
11624 the SMBus region handler (avoiding all of the complex field
11625 support code), and support for the bidirectional return packet
11626 from an SMBus write operation. This paves the way for the
11627 development of SMBus drivers in each host operating system.
11629 Fixed a problem where the semaphore WAIT_FOREVER constant was
11630 defined as 32 bits, but must be 16 bits according to the ACPI
11631 specification. This had the side effect of causing ASL
11632 Mutex/Event timeouts even though the ASL code requested a wait
11633 forever. Changed all internal references to the ACPI timeout
11634 parameter to 16 bits to prevent future problems. Changed the name
11635 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
11637 Code and Data Size: Current core subsystem library sizes are shown
11638 below. These are the code and data sizes for the acpica.lib
11639 produced by the Microsoft Visual C++ 6.0 compiler, and these
11640 values do not include any ACPI driver or OSPM code. The debug
11641 version of the code includes the debug output trace mechanism and
11642 has a much larger code and data size. Note that these values will
11643 vary depending on the efficiency of the compiler and the compiler
11644 options used during generation.
11647 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11648 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11650 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11651 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11656 Module loading/unloading fixes (John Cagle)
11659 3) iASL Compiler/Disassembler
11661 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
11663 Implemented support for the disassembly of all SMBus protocol
11664 keywords (SMBQuick, SMBWord, etc.)
11666 ----------------------------------------
11667 01 November 2002. Summary of changes for version 20021101.
11670 1) ACPI CA Core Subsystem:
11672 Fixed a problem where platforms that have a GPE1 block but no GPE0
11673 block were not handled correctly. This resulted in a "GPE
11674 overlap" error message. GPE0 is no longer required.
11676 Removed code added in the previous release that inserted nodes
11677 into the namespace in alphabetical order. This caused some side-
11678 effects on various machines. The root cause of the problem is
11679 still under investigation since in theory, the internal ordering
11680 of the namespace nodes should not matter.
11683 Enhanced error reporting for the case where a named object is not
11684 found during control method execution. The full ACPI namepath
11685 (name reference) of the object that was not found is displayed in
11688 Note: as a result of the overhaul of the namespace object types in
11689 the previous release, the namespace nodes for the predefined
11690 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
11691 instead of ACPI_TYPE_ANY. This simplifies the namespace
11692 management code but may affect code that walks the namespace tree
11693 looking for specific object types.
11695 Code and Data Size: Current core subsystem library sizes are shown
11696 below. These are the code and data sizes for the acpica.lib
11697 produced by the Microsoft Visual C++ 6.0 compiler, and these
11698 values do not include any ACPI driver or OSPM code. The debug
11699 version of the code includes the debug output trace mechanism and
11700 has a much larger code and data size. Note that these values will
11701 vary depending on the efficiency of the compiler and the compiler
11702 options used during generation.
11705 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
11706 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
11708 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11709 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11714 Fixed a problem introduced in the previous release where the
11715 Processor and Thermal objects were not recognized and installed in
11716 /proc. This was related to the scope type change described above.
11719 3) iASL Compiler/Disassembler
11721 Implemented the -g option to get all of the required ACPI tables
11722 from the registry and save them to files (Windows version of the
11723 compiler only.) The required tables are the FADT, FACS, and DSDT.
11725 Added ACPI table checksum validation during table disassembly in
11726 order to catch corrupted tables.
11729 ----------------------------------------
11730 22 October 2002. Summary of changes for version 20021022.
11732 1) ACPI CA Core Subsystem:
11734 Implemented a restriction on the Scope operator that the target
11735 must already exist in the namespace at the time the operator is
11736 encountered (during table load or method execution). In other
11737 words, forward references are not allowed and Scope() cannot
11738 create a new object. This changes the previous behavior where the
11739 interpreter would create the name if not found. This new behavior
11740 correctly enables the search-to-root algorithm during namespace
11741 lookup of the target name. Because of this upsearch, this fixes
11742 the known Compaq _SB_.OKEC problem and makes both the AML
11743 interpreter and iASL compiler compatible with other ACPI
11746 Completed a major overhaul of the internal ACPI object types for
11747 the ACPI Namespace and the associated operand objects. Many of
11748 these types had become obsolete with the introduction of the two-
11749 pass namespace load. This cleanup simplifies the code and makes
11750 the entire namespace load mechanism much clearer and easier to
11753 Improved debug output for tracking scope opening/closing to help
11754 diagnose scoping issues. The old scope name as well as the new
11755 scope name are displayed. Also improved error messages for
11756 problems with ASL Mutex objects and error messages for GPE
11759 Cleaned up the namespace dump code, removed obsolete code.
11761 All string output (for all namespace/object dumps) now uses the
11762 common ACPI string output procedure which handles escapes properly
11763 and does not emit non-printable characters.
11765 Fixed some issues with constants in the 64-bit version of the
11766 local C library (utclib.c)
11771 EC Driver: No longer attempts to acquire the Global Lock at
11775 3) iASL Compiler/Disassembler
11777 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
11778 2 opcodes outside of a control method. This means that the
11779 "executable" operators (versus the "namespace" operators) cannot
11780 be used at the table level; they can only be used within a control
11783 Implemented the restriction on the Scope() operator where the
11784 target must already exist in the namespace at the time the
11785 operator is encountered (during ASL compilation). In other words,
11786 forward references are not allowed and Scope() cannot create a new
11787 object. This makes the iASL compiler compatible with other ACPI
11788 implementations and makes the Scope() implementation adhere to the
11789 ACPI specification.
11791 Fixed a problem where namepath optimization for the Alias operator
11792 was optimizing the wrong path (of the two namepaths.) This caused
11793 a "Missing alias link" error message.
11795 Fixed a problem where an "unknown reserved name" warning could be
11796 incorrectly generated for names like "_SB" when the trailing
11797 underscore is not used in the original ASL.
11799 Fixed a problem where the reserved name check did not handle
11800 NamePaths with multiple NameSegs correctly. The first nameseg of
11801 the NamePath was examined instead of the last NameSeg.
11804 ----------------------------------------
11806 02 October 2002. Summary of changes for this release.
11809 1) ACPI CA Core Subsystem version 20021002:
11811 Fixed a problem where a store/copy of a string to an existing
11812 string did not always set the string length properly in the String
11815 Fixed a reported problem with the ToString operator where the
11816 behavior was identical to the ToHexString operator instead of just
11817 simply converting a raw buffer to a string data type.
11819 Fixed a problem where CopyObject and the other "explicit"
11820 conversion operators were not updating the internal namespace node
11821 type as part of the store operation.
11823 Fixed a memory leak during implicit source operand conversion
11824 where the original object was not deleted if it was converted to a
11825 new object of a different type.
11827 Enhanced error messages for all problems associated with namespace
11828 lookups. Common procedure generates and prints the lookup name as
11829 well as the formatted status.
11831 Completed implementation of a new design for the Alias support
11832 within the namespace. The existing design did not handle the case
11833 where a new object was assigned to one of the two names due to the
11834 use of an explicit conversion operator, resulting in the two names
11835 pointing to two different objects. The new design simply points
11836 the Alias name to the original name node - not to the object.
11837 This results in a level of indirection that must be handled in the
11838 name resolution mechanism.
11840 Code and Data Size: Current core subsystem library sizes are shown
11841 below. These are the code and data sizes for the acpica.lib
11842 produced by the Microsoft Visual C++ 6.0 compiler, and these
11843 values do not include any ACPI driver or OSPM code. The debug
11844 version of the code includes the debug output trace mechanism and
11845 has a larger code and data size. Note that these values will vary
11846 depending on the efficiency of the compiler and the compiler
11847 options used during generation.
11850 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
11851 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
11853 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
11854 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
11859 Initialize thermal driver's timer before it is used. (Knut
11862 Allow handling negative celsius values. (Kochi Takayoshi)
11864 Fix thermal management and make trip points. R/W (Pavel Machek)
11866 Fix /proc/acpi/sleep. (P. Christeas)
11868 IA64 fixes. (David Mosberger)
11870 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
11872 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
11876 3) iASL Compiler/Disassembler
11878 Clarified some warning/error messages.
11881 ----------------------------------------
11882 18 September 2002. Summary of changes for this release.
11885 1) ACPI CA Core Subsystem version 20020918:
11887 Fixed a reported problem with reference chaining (via the Index()
11888 and RefOf() operators) in the ObjectType() and SizeOf() operators.
11889 The definition of these operators includes the dereferencing of
11890 all chained references to return information on the base object.
11892 Fixed a problem with stores to indexed package elements - the
11893 existing code would not complete the store if an "implicit
11894 conversion" was not performed. In other words, if the existing
11895 object (package element) was to be replaced completely, the code
11896 didn't handle this case.
11898 Relaxed typechecking on the ASL "Scope" operator to allow the
11899 target name to refer to an object of type Integer, String, or
11900 Buffer, in addition to the scoping object types (Device,
11901 predefined Scopes, Processor, PowerResource, and ThermalZone.)
11902 This allows existing AML code that has workarounds for a bug in
11903 Windows to function properly. A warning is issued, however. This
11904 affects both the AML interpreter and the iASL compiler. Below is
11905 an example of this type of ASL code:
11911 Fixed some reported problems with 64-bit integer support in the
11912 local implementation of C library functions (clib.c)
11917 Use ACPI fix map region instead of IOAPIC region, since it is
11918 undefined in non-SMP.
11920 Ensure that the SCI has the proper polarity and trigger, even on
11921 systems that do not have an interrupt override entry in the MADT.
11923 2.5 big driver reorganization (Pat Mochel)
11925 Use early table mapping code from acpitable.c (Andi Kleen)
11927 New blacklist entries (Andi Kleen)
11929 Blacklist improvements. Split blacklist code out into a separate
11930 file. Move checking the blacklist to very early. Previously, we
11931 would use ACPI tables, and then halfway through init, check the
11932 blacklist -- too late. Now, it's early enough to completely fall-
11936 3) iASL Compiler/Disassembler version 20020918:
11938 Fixed a problem where the typechecking code didn't know that an
11939 alias could point to a method. In other words, aliases were not
11940 being dereferenced during typechecking.
11943 ----------------------------------------
11944 29 August 2002. Summary of changes for this release.
11946 1) ACPI CA Core Subsystem Version 20020829:
11948 If the target of a Scope() operator already exists, it must be an
11949 object type that actually opens a scope -- such as a Device,
11950 Method, Scope, etc. This is a fatal runtime error. Similar error
11951 check has been added to the iASL compiler also.
11953 Tightened up the namespace load to disallow multiple names in the
11954 same scope. This previously was allowed if both objects were of
11955 the same type. (i.e., a lookup was the same as entering a new
11961 Ensure that the ACPI interrupt has the proper trigger and
11964 local_irq_disable is extraneous. (Matthew Wilcox)
11966 Make "acpi=off" actually do what it says, and not use the ACPI
11967 interpreter *or* the tables.
11969 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
11973 3) iASL Compiler/Disassembler Version 20020829:
11975 Implemented namepath optimization for name declarations. For
11976 example, a declaration like "Method (\_SB_.ABCD)" would get
11977 optimized to "Method (ABCD)" if the declaration is within the
11978 \_SB_ scope. This optimization is in addition to the named
11979 reference path optimization first released in the previous
11980 version. This would seem to complete all possible optimizations
11981 for namepaths within the ASL/AML.
11983 If the target of a Scope() operator already exists, it must be an
11984 object type that actually opens a scope -- such as a Device,
11985 Method, Scope, etc.
11987 Implemented a check and warning for unreachable code in the same
11988 block below a Return() statement.
11990 Fixed a problem where the listing file was not generated if the
11991 compiler aborted if the maximum error count was exceeded (200).
11993 Fixed a problem where the typechecking of method return values was
11994 broken. This includes the check for a return value when the
11995 method is invoked as a TermArg (a return value is expected.)
11997 Fixed a reported problem where EOF conditions during a quoted
11998 string or comment caused a fault.
12001 ----------------------------------------
12002 15 August 2002. Summary of changes for this release.
12004 1) ACPI CA Core Subsystem Version 20020815:
12006 Fixed a reported problem where a Store to a method argument that
12007 contains a reference did not perform the indirect store correctly.
12008 This problem was created during the conversion to the new
12009 reference object model - the indirect store to a method argument
12010 code was not updated to reflect the new model.
12012 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12013 handle corner cases, and improve code legibility (Kochi Takayoshi)
12015 Fixed a problem with the pathname parsing for the carat (^)
12016 prefix. The heavy use of the carat operator by the new namepath
12017 optimization in the iASL compiler uncovered a problem with the AML
12018 interpreter handling of this prefix. In the case where one or
12019 more carats precede a single nameseg, the nameseg was treated as
12020 standalone and the search rule (to root) was inadvertently
12021 applied. This could cause both the iASL compiler and the
12022 interpreter to find the wrong object or to miss the error that
12023 should occur if the object does not exist at that exact pathname.
12025 Found and fixed the problem where the HP Pavilion DSDT would not
12026 load. This was a relatively minor tweak to the table loading code
12027 (a problem caused by the unexpected encounter with a method
12028 invocation not within a control method), but it does not solve the
12029 overall issue of the execution of AML code at the table level.
12030 This investigation is still ongoing.
12032 Code and Data Size: Current core subsystem library sizes are shown
12033 below. These are the code and data sizes for the acpica.lib
12034 produced by the Microsoft Visual C++ 6.0 compiler, and these
12035 values do not include any ACPI driver or OSPM code. The debug
12036 version of the code includes the debug output trace mechanism and
12037 has a larger code and data size. Note that these values will vary
12038 depending on the efficiency of the compiler and the compiler
12039 options used during generation.
12042 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12043 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12045 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12046 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12051 Remove redundant slab.h include (Brad Hards)
12053 Fix several bugs in thermal.c (Herbert Nachtnebel)
12055 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12057 Change acpi_system_suspend to use updated irq functions (Pavel
12060 Export acpi_get_firmware_table (Matthew Wilcox)
12062 Use proper root proc entry for ACPI (Kochi Takayoshi)
12064 Fix early-boot table parsing (Bjorn Helgaas)
12067 3) iASL Compiler/Disassembler
12069 Reworked the compiler options to make them more consistent and to
12070 use two-letter options where appropriate. We were running out of
12071 sensible letters. This may break some makefiles, so check the
12072 current options list by invoking the compiler with no parameters.
12074 Completed the design and implementation of the ASL namepath
12075 optimization option for the compiler. This option optimizes all
12076 references to named objects to the shortest possible path. The
12077 first attempt tries to utilize a single nameseg (4 characters) and
12078 the "search-to-root" algorithm used by the interpreter. If that
12079 cannot be used (because either the name is not in the search path
12080 or there is a conflict with another object with the same name),
12081 the pathname is optimized using the carat prefix (usually a
12082 shorter string than specifying the entire path from the root.)
12084 Implemented support to obtain the DSDT from the Windows registry
12085 (when the disassembly option is specified with no input file).
12086 Added this code as the implementation for AcpiOsTableOverride in
12087 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12088 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12089 function in the DOS OSL to make the disassembler truly OS
12092 Implemented a new option to disassemble and compile in one step.
12093 When used without an input filename, this option will grab the
12094 DSDT from the local machine, disassemble it, and compile it in one
12097 Added a warning message for invalid escapes (a backslash followed
12098 by any character other than the allowable escapes). This catches
12099 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12101 Also, there are numerous instances in the ACPI specification where
12104 Added a compiler option to disable all optimizations. This is
12105 basically the "compatibility mode" because by using this option,
12106 the AML code will come out exactly the same as other ASL
12109 Added error messages for incorrectly ordered dependent resource
12110 functions. This includes: missing EndDependentFn macro at end of
12111 dependent resource list, nested dependent function macros (both
12112 start and end), and missing StartDependentFn macro. These are
12113 common errors that should be caught at compile time.
12115 Implemented _OSI support for the disassembler and compiler. _OSI
12116 must be included in the namespace for proper disassembly (because
12117 the disassembler must know the number of arguments.)
12119 Added an "optimization" message type that is optional (off by
12120 default). This message is used for all optimizations - including
12121 constant folding, integer optimization, and namepath optimization.
12123 ----------------------------------------
12124 25 July 2002. Summary of changes for this release.
12127 1) ACPI CA Core Subsystem Version 20020725:
12129 The AML Disassembler has been enhanced to produce compilable ASL
12130 code and has been integrated into the iASL compiler (see below) as
12131 well as the single-step disassembly for the AML debugger and the
12132 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12133 resource templates and macros are fully supported. The
12134 disassembler has been tested on over 30 different AML files,
12135 producing identical AML when the resulting disassembled ASL file
12136 is recompiled with the same ASL compiler.
12138 Modified the Resource Manager to allow zero interrupts and zero
12139 dma channels during the GetCurrentResources call. This was
12140 causing problems on some platforms.
12142 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12143 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12146 Code and Data Size: Current core subsystem library sizes are shown
12147 below. These are the code and data sizes for the acpica.lib
12148 produced by the Microsoft Visual C++ 6.0 compiler, and these
12149 values do not include any ACPI driver or OSPM code. The debug
12150 version of the code includes the debug output trace mechanism and
12151 has a larger code and data size. Note that these values will vary
12152 depending on the efficiency of the compiler and the compiler
12153 options used during generation.
12156 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12157 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12159 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12160 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12165 Fixed a panic in the EC driver (Dominik Brodowski)
12167 Implemented checksum of the R/XSDT itself during Linux table scan
12173 The AML disassembler is integrated into the compiler. The "-d"
12174 option invokes the disassembler to completely disassemble an
12175 input AML file, producing as output a text ASL file with the
12176 extension ".dsl" (to avoid name collisions with existing .asl
12177 source files.) A future enhancement will allow the disassembler
12178 to obtain the BIOS DSDT from the registry under Windows.
12180 Fixed a problem with the VendorShort and VendorLong resource
12181 descriptors where an invalid AML sequence was created.
12183 Implemented a fix for BufferData term in the ASL parser. It was
12184 inadvertently defined twice, allowing invalid syntax to pass and
12185 causing reduction conflicts.
12187 Fixed a problem where the Ones opcode could get converted to a
12188 value of zero if "Ones" was used where a byte, word or dword value
12189 was expected. The 64-bit value is now truncated to the correct
12190 size with the correct value.
12194 ----------------------------------------
12195 02 July 2002. Summary of changes for this release.
12198 1) ACPI CA Core Subsystem Version 20020702:
12200 The Table Manager code has been restructured to add several new
12201 features. Tables that are not required by the core subsystem
12202 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
12203 validated in any way and are returned from AcpiGetFirmwareTable if
12204 requested. The AcpiOsTableOverride interface is now called for
12205 each table that is loaded by the subsystem in order to allow the
12206 host to override any table it chooses. Previously, only the DSDT
12207 could be overridden. Added one new files, tbrsdt.c and
12210 Fixed a problem with the conversion of internal package objects to
12211 external objects (when a package is returned from a control
12212 method.) The return buffer length was set to zero instead of the
12213 proper length of the package object.
12215 Fixed a reported problem with the use of the RefOf and DeRefOf
12216 operators when passing reference arguments to control methods. A
12217 new type of Reference object is used internally for references
12218 produced by the RefOf operator.
12220 Added additional error messages in the Resource Manager to explain
12221 AE_BAD_DATA errors when they occur during resource parsing.
12223 Split the AcpiEnableSubsystem into two primitives to enable a
12224 finer granularity initialization sequence. These two calls should
12225 be called in this order: AcpiEnableSubsystem (flags),
12226 AcpiInitializeObjects (flags). The flags parameter remains the
12232 Updated the ACPI utilities module to understand the new style of
12233 fully resolved package objects that are now returned from the core
12234 subsystem. This eliminates errors of the form:
12236 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
12237 acpi_utils-0430 [145] acpi_evaluate_reference:
12238 Invalid element in package (not a device reference)
12240 The method evaluation utility uses the new buffer allocation
12241 scheme instead of calling AcpiEvaluate Object twice.
12243 Added support for ECDT. This allows the use of the Embedded
12245 Controller before the namespace has been fully initialized, which
12246 is necessary for ACPI 2.0 support, and for some laptops to
12247 initialize properly. (Laptops using ECDT are still rare, so only
12248 limited testing was performed of the added functionality.)
12250 Fixed memory leaks in the EC driver.
12252 Eliminated a brittle code structure in acpi_bus_init().
12254 Eliminated the acpi_evaluate() helper function in utils.c. It is
12255 no longer needed since acpi_evaluate_object can optionally
12256 allocate memory for the return object.
12258 Implemented fix for keyboard hang when getting battery readings on
12259 some systems (Stephen White)
12261 PCI IRQ routing update (Dominik Brodowski)
12263 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
12266 ----------------------------------------
12267 11 June 2002. Summary of changes for this release.
12270 1) ACPI CA Core Subsystem Version 20020611:
12272 Fixed a reported problem where constants such as Zero and One
12273 appearing within _PRT packages were not handled correctly within
12274 the resource manager code. Originally reported against the ASL
12275 compiler because the code generator now optimizes integers to
12276 their minimal AML representation (i.e. AML constants if possible.)
12277 The _PRT code now handles all AML constant opcodes correctly
12278 (Zero, One, Ones, Revision).
12280 Fixed a problem with the Concatenate operator in the AML
12281 interpreter where a buffer result object was incorrectly marked as
12282 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
12284 All package sub-objects are now fully resolved before they are
12285 returned from the external ACPI interfaces. This means that name
12286 strings are resolved to object handles, and constant operators
12287 (Zero, One, Ones, Revision) are resolved to Integers.
12289 Implemented immediate resolution of the AML Constant opcodes
12290 (Zero, One, Ones, Revision) to Integer objects upon detection
12291 within the AML stream. This has simplified and reduced the
12292 generated code size of the subsystem by eliminating about 10
12293 switch statements for these constants (which previously were
12294 contained in Reference objects.) The complicating issues are that
12295 the Zero opcode is used as a "placeholder" for unspecified
12296 optional target operands and stores to constants are defined to be
12299 Code and Data Size: Current core subsystem library sizes are shown
12300 below. These are the code and data sizes for the acpica.lib
12301 produced by the Microsoft Visual C++ 6.0 compiler, and these
12302 values do not include any ACPI driver or OSPM code. The debug
12303 version of the code includes the debug output trace mechanism and
12304 has a larger code and data size. Note that these values will vary
12305 depending on the efficiency of the compiler and the compiler
12306 options used during generation.
12309 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12310 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12312 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12313 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12319 Added preliminary support for obtaining _TRA data for PCI root
12320 bridges (Bjorn Helgaas).
12323 3) iASL Compiler Version X2046:
12325 Fixed a problem where the "_DDN" reserved name was defined to be a
12326 control method with one argument. There are no arguments, and
12327 _DDN does not have to be a control method.
12329 Fixed a problem with the Linux version of the compiler where the
12330 source lines printed with error messages were the wrong lines.
12331 This turned out to be the "LF versus CR/LF" difference between
12332 Windows and Unix. This appears to be the longstanding issue
12333 concerning listing output and error messages.
12335 Fixed a problem with the Linux version of compiler where opcode
12336 names within error messages were wrong. This was caused by a
12337 slight difference in the output of the Flex tool on Linux versus
12340 Fixed a problem with the Linux compiler where the hex output files
12341 contained some garbage data caused by an internal buffer overrun.
12344 ----------------------------------------
12345 17 May 2002. Summary of changes for this release.
12348 1) ACPI CA Core Subsystem Version 20020517:
12350 Implemented a workaround to an BIOS bug discovered on the HP
12351 OmniBook where the FADT revision number and the table size are
12352 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
12353 behavior is to fallback to using only the ACPI 1.0 fields of the
12354 FADT if the table is too small to be a ACPI 2.0 table as claimed
12355 by the revision number. Although this is a BIOS bug, this is a
12356 case where the workaround is simple enough and with no side
12357 effects, so it seemed prudent to add it. A warning message is
12360 Implemented minimum size checks for the fixed-length ACPI tables -
12361 - the FADT and FACS, as well as consistency checks between the
12362 revision number and the table size.
12364 Fixed a reported problem in the table override support where the
12365 new table pointer was incorrectly treated as a physical address
12366 instead of a logical address.
12368 Eliminated the use of the AE_AML_ERROR exception and replaced it
12369 with more descriptive codes.
12371 Fixed a problem where an exception would occur if an ASL Field was
12372 defined with no named Field Units underneath it (used by some
12375 Code and Data Size: Current core subsystem library sizes are shown
12376 below. These are the code and data sizes for the acpica.lib
12377 produced by the Microsoft Visual C++ 6.0 compiler, and these
12378 values do not include any ACPI driver or OSPM code. The debug
12379 version of the code includes the debug output trace mechanism and
12380 has a larger code and data size. Note that these values will vary
12381 depending on the efficiency of the compiler and the compiler
12382 options used during generation.
12385 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12386 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12388 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12389 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12395 Much work done on ACPI init (MADT and PCI IRQ routing support).
12396 (Paul D. and Dominik Brodowski)
12398 Fix PCI IRQ-related panic on boot (Sam Revitch)
12400 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
12402 Fix "MHz" typo (Dominik Brodowski)
12404 Fix RTC year 2000 issue (Dominik Brodowski)
12406 Preclude multiple button proc entries (Eric Brunet)
12408 Moved arch-specific code out of include/platform/aclinux.h
12410 3) iASL Compiler Version X2044:
12412 Implemented error checking for the string used in the EISAID macro
12413 (Usually used in the definition of the _HID object.) The code now
12414 strictly enforces the PnP format - exactly 7 characters, 3
12415 uppercase letters and 4 hex digits.
12417 If a raw string is used in the definition of the _HID object
12418 (instead of the EISAID macro), the string must contain all
12419 alphanumeric characters (e.g., "*PNP0011" is not allowed because
12422 Implemented checking for invalid use of ACPI reserved names for
12423 most of the name creation operators (Name, Device, Event, Mutex,
12424 OperationRegion, PowerResource, Processor, and ThermalZone.)
12425 Previously, this check was only performed for control methods.
12427 Implemented an additional check on the Name operator to emit an
12428 error if a reserved name that must be implemented in ASL as a
12429 control method is used. We know that a reserved name must be a
12430 method if it is defined with input arguments.
12432 The warning emitted when a namespace object reference is not found
12433 during the cross reference phase has been changed into an error.
12434 The "External" directive should be used for names defined in other
12438 4) Tools and Utilities
12440 The 16-bit tools (adump16 and aexec16) have been regenerated and
12443 Fixed a problem with the output of both acpidump and adump16 where
12444 the indentation of closing parentheses and brackets was not
12446 aligned properly with the parent block.
12449 ----------------------------------------
12450 03 May 2002. Summary of changes for this release.
12453 1) ACPI CA Core Subsystem Version 20020503:
12455 Added support a new OSL interface that allows the host operating
12457 system software to override the DSDT found in the firmware -
12458 AcpiOsTableOverride. With this interface, the OSL can examine the
12459 version of the firmware DSDT and replace it with a different one
12462 Added new external interfaces for accessing ACPI registers from
12463 device drivers and other system software - AcpiGetRegister and
12464 AcpiSetRegister. This was simply an externalization of the
12465 existing AcpiHwBitRegister interfaces.
12467 Fixed a regression introduced in the previous build where the
12468 ASL/AML CreateField operator always returned an error,
12469 "destination must be a NS Node".
12471 Extended the maximum time (before failure) to successfully enable
12472 ACPI mode to 3 seconds.
12474 Code and Data Size: Current core subsystem library sizes are shown
12475 below. These are the code and data sizes for the acpica.lib
12476 produced by the Microsoft Visual C++ 6.0 compiler, and these
12477 values do not include any ACPI driver or OSPM code. The debug
12478 version of the code includes the debug output trace mechanism and
12479 has a larger code and data size. Note that these values will vary
12480 depending on the efficiency of the compiler and the compiler
12481 options used during generation.
12484 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12485 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12487 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12488 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12493 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
12494 free. While 3 out of 4 of our in-house systems work fine, the last
12495 one still hangs when testing the LAPIC timer.
12497 Renamed many files in 2.5 kernel release to omit "acpi_" from the
12500 Added warning on boot for Presario 711FR.
12502 Sleep improvements (Pavel Machek)
12504 ACPI can now be built without CONFIG_PCI enabled.
12506 IA64: Fixed memory map functions (JI Lee)
12509 3) iASL Compiler Version X2043:
12511 Added support to allow the compiler to be integrated into the MS
12512 VC++ development environment for one-button compilation of single
12513 files or entire projects -- with error-to-source-line mapping.
12515 Implemented support for compile-time constant folding for the
12516 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
12517 specification. This allows the ASL writer to use expressions
12518 instead of Integer/Buffer/String constants in terms that must
12519 evaluate to constants at compile time and will also simplify the
12520 emitted AML in any such sub-expressions that can be folded
12521 (evaluated at compile-time.) This increases the size of the
12522 compiler significantly because a portion of the ACPI CA AML
12523 interpreter is included within the compiler in order to pre-
12524 evaluate constant expressions.
12527 Fixed a problem with the "Unicode" ASL macro that caused the
12528 compiler to fault. (This macro is used in conjunction with the
12529 _STR reserved name.)
12531 Implemented an AML opcode optimization to use the Zero, One, and
12532 Ones opcodes where possible to further reduce the size of integer
12533 constants and thus reduce the overall size of the generated AML
12536 Implemented error checking for new reserved terms for ACPI version
12539 Implemented the -qr option to display the current list of ACPI
12540 reserved names known to the compiler.
12542 Implemented the -qc option to display the current list of ASL
12543 operators that are allowed within constant expressions and can
12544 therefore be folded at compile time if the operands are constants.
12549 Updated the Programmer's Reference for new interfaces, data types,
12550 and memory allocation model options.
12552 Updated the iASL Compiler User Reference to apply new format and
12553 add information about new features and options.
12555 ----------------------------------------
12556 19 April 2002. Summary of changes for this release.
12558 1) ACPI CA Core Subsystem Version 20020419:
12560 The source code base for the Core Subsystem has been completely
12561 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
12562 versions. The Lint option files used are included in the
12563 /acpi/generate/lint directory.
12565 Implemented enhanced status/error checking across the entire
12566 Hardware manager subsystem. Any hardware errors (reported from
12567 the OSL) are now bubbled up and will abort a running control
12571 Fixed a problem where the per-ACPI-table integer width (32 or 64)
12572 was stored only with control method nodes, causing a fault when
12573 non-control method code was executed during table loading. The
12574 solution implemented uses a global variable to indicate table
12575 width across the entire ACPI subsystem. Therefore, ACPI CA does
12576 not support mixed integer widths across different ACPI tables
12579 Fixed a problem where NULL extended fields (X fields) in an ACPI
12580 2.0 ACPI FADT caused the table load to fail. Although the
12581 existing ACPI specification is a bit fuzzy on this topic, the new
12582 behavior is to fall back on a ACPI 1.0 field if the corresponding
12583 ACPI 2.0 X field is zero (even though the table revision indicates
12584 a full ACPI 2.0 table.) The ACPI specification will be updated to
12585 clarify this issue.
12587 Fixed a problem with the SystemMemory operation region handler
12588 where memory was always accessed byte-wise even if the AML-
12589 specified access width was larger than a byte. This caused
12590 problems on systems with memory-mapped I/O. Memory is now
12591 accessed with the width specified. On systems that do not support
12592 non-aligned transfers, a check is made to guarantee proper address
12593 alignment before proceeding in order to avoid an AML-caused
12594 alignment fault within the kernel.
12597 Fixed a problem with the ExtendedIrq resource where only one byte
12598 of the 4-byte Irq field was extracted.
12600 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
12601 function was out of date and required a rewrite.
12603 Code and Data Size: Current core subsystem library sizes are shown
12604 below. These are the code and data sizes for the acpica.lib
12605 produced by the Microsoft Visual C++ 6.0 compiler, and these
12606 values do not include any ACPI driver or OSPM code. The debug
12607 version of the code includes the debug output trace mechanism and
12608 has a larger code and data size. Note that these values will vary
12609 depending on the efficiency of the compiler and the compiler
12610 options used during generation.
12613 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12614 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12616 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12617 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12622 PCI IRQ routing fixes (Dominik Brodowski)
12625 3) iASL Compiler Version X2042:
12627 Implemented an additional compile-time error check for a field
12628 unit whose size + minimum access width would cause a run-time
12629 access beyond the end-of-region. Previously, only the field size
12630 itself was checked.
12632 The Core subsystem and iASL compiler now share a common parse
12633 object in preparation for compile-time evaluation of the type
12634 3/4/5 ASL operators.
12637 ----------------------------------------
12638 Summary of changes for this release: 03_29_02
12640 1) ACPI CA Core Subsystem Version 20020329:
12642 Implemented support for late evaluation of TermArg operands to
12643 Buffer and Package objects. This allows complex expressions to be
12644 used in the declarations of these object types.
12646 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
12647 1.0, if the field was larger than 32 bits, it was returned as a
12648 buffer - otherwise it was returned as an integer. In ACPI 2.0,
12649 the field is returned as a buffer only if the field is larger than
12650 64 bits. The TableRevision is now considered when making this
12651 conversion to avoid incompatibility with existing ASL code.
12653 Implemented logical addressing for AcpiOsGetRootPointer. This
12654 allows an RSDP with either a logical or physical address. With
12655 this support, the host OS can now override all ACPI tables with
12656 one logical RSDP. Includes implementation of "typed" pointer
12657 support to allow a common data type for both physical and logical
12658 pointers internally. This required a change to the
12659 AcpiOsGetRootPointer interface.
12661 Implemented the use of ACPI 2.0 Generic Address Structures for all
12662 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
12663 mapped I/O for these ACPI features.
12665 Initialization now ignores not only non-required tables (All
12666 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
12667 not validate the table headers of unrecognized tables.
12669 Fixed a problem where a notify handler could only be
12670 installed/removed on an object of type Device. All "notify"
12672 objects are now supported -- Devices, Processor, Power, and
12675 Removed most verbosity from the ACPI_DB_INFO debug level. Only
12676 critical information is returned when this debug level is enabled.
12678 Code and Data Size: Current core subsystem library sizes are shown
12679 below. These are the code and data sizes for the acpica.lib
12680 produced by the Microsoft Visual C++ 6.0 compiler, and these
12681 values do not include any ACPI driver or OSPM code. The debug
12682 version of the code includes the debug output trace mechanism and
12683 has a larger code and data size. Note that these values will vary
12684 depending on the efficiency of the compiler and the compiler
12685 options used during generation.
12688 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
12689 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
12691 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12692 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12697 The processor driver (acpi_processor.c) now fully supports ACPI
12698 2.0-based processor performance control (e.g. Intel(R)
12699 SpeedStep(TM) technology) Note that older laptops that only have
12700 the Intel "applet" interface are not supported through this. The
12701 'limit' and 'performance' interface (/proc) are fully functional.
12702 [Note that basic policy for controlling performance state
12703 transitions will be included in the next version of ospmd.] The
12704 idle handler was modified to more aggressively use C2, and PIIX4
12705 errata handling underwent a complete overhaul (big thanks to
12706 Dominik Brodowski).
12708 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
12709 based devices in the ACPI namespace are now dynamically bound
12710 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
12711 This allows, among other things, ACPI to resolve bus numbers for
12712 subordinate PCI bridges.
12714 Enhanced PCI IRQ routing to get the proper bus number for _PRT
12715 entries defined underneath PCI bridges.
12717 Added IBM 600E to bad bios list due to invalid _ADR value for
12718 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
12720 In the process of adding full MADT support (e.g. IOAPIC) for IA32
12721 (acpi.c, mpparse.c) -- stay tuned.
12723 Added back visual differentiation between fixed-feature and
12724 control-method buttons in dmesg. Buttons are also subtyped (e.g.
12725 button/power/PWRF) to simplify button identification.
12727 We no longer use -Wno-unused when compiling debug. Please ignore
12728 any "_THIS_MODULE defined but not used" messages.
12730 Can now shut down the system using "magic sysrq" key.
12733 3) iASL Compiler version 2041:
12735 Fixed a problem where conversion errors for hex/octal/decimal
12736 constants were not reported.
12738 Implemented a fix for the General Register template Address field.
12739 This field was 8 bits when it should be 64.
12741 Fixed a problem where errors/warnings were no longer being emitted
12742 within the listing output file.
12744 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
12745 exactly 4 characters, alphanumeric only.
12750 ----------------------------------------
12751 Summary of changes for this release: 03_08_02
12754 1) ACPI CA Core Subsystem Version 20020308:
12756 Fixed a problem with AML Fields where the use of the "AccessAny"
12757 keyword could cause an interpreter error due to attempting to read
12758 or write beyond the end of the parent Operation Region.
12760 Fixed a problem in the SystemMemory Operation Region handler where
12761 an attempt was made to map memory beyond the end of the region.
12762 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
12763 errors on some Linux systems.
12765 Fixed a problem where the interpreter/namespace "search to root"
12766 algorithm was not functioning for some object types. Relaxed the
12767 internal restriction on the search to allow upsearches for all
12768 external object types as well as most internal types.
12773 We now use safe_halt() macro versus individual calls to sti | hlt.
12775 Writing to the processor limit interface should now work. "echo 1"
12776 will increase the limit, 2 will decrease, and 0 will reset to the
12783 Fixed segfault on Linux version.
12786 ----------------------------------------
12787 Summary of changes for this release: 02_25_02
12789 1) ACPI CA Core Subsystem:
12792 Fixed a problem where the GPE bit masks were not initialized
12793 properly, causing erratic GPE behavior.
12795 Implemented limited support for multiple calling conventions. The
12796 code can be generated with either the VPL (variable parameter
12797 list, or "C") convention, or the FPL (fixed parameter list, or
12798 "Pascal") convention. The core subsystem is about 3.4% smaller
12799 when generated with FPL.
12804 Re-add some /proc/acpi/event functionality that was lost during
12807 Resolved issue with /proc events for fixed-feature buttons showing
12808 up as the system device.
12810 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
12812 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
12814 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
12816 Fixed limit interface & usage to fix bugs with passive cooling
12819 Restructured PRT support.
12822 ----------------------------------------
12823 Summary of changes for this label: 02_14_02
12826 1) ACPI CA Core Subsystem:
12828 Implemented support in AcpiLoadTable to allow loading of FACS and
12831 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
12832 been removed. All 64-bit platforms should be migrated to the ACPI
12833 2.0 tables. The actbl71.h header has been removed from the source
12836 All C macros defined within the subsystem have been prefixed with
12837 "ACPI_" to avoid collision with other system include files.
12839 Removed the return value for the two AcpiOsPrint interfaces, since
12840 it is never used and causes lint warnings for ignoring the return
12843 Added error checking to all internal mutex acquire and release
12844 calls. Although a failure from one of these interfaces is
12845 probably a fatal system error, these checks will cause the
12846 immediate abort of the currently executing method or interface.
12848 Fixed a problem where the AcpiSetCurrentResources interface could
12849 fault. This was a side effect of the deployment of the new memory
12852 Fixed a couple of problems with the Global Lock support introduced
12853 in the last major build. The "common" (1.0/2.0) internal FACS was
12854 being overwritten with the FACS signature and clobbering the
12855 Global Lock pointer. Also, the actual firmware FACS was being
12856 unmapped after construction of the "common" FACS, preventing
12857 access to the actual Global Lock field within it. The "common"
12858 internal FACS is no longer installed as an actual ACPI table; it
12859 is used simply as a global.
12861 Code and Data Size: Current core subsystem library sizes are shown
12862 below. These are the code and data sizes for the acpica.lib
12863 produced by the Microsoft Visual C++ 6.0 compiler, and these
12864 values do not include any ACPI driver or OSPM code. The debug
12865 version of the code includes the debug output trace mechanism and
12866 has a larger code and data size. Note that these values will vary
12867 depending on the efficiency of the compiler and the compiler
12868 options used during generation.
12870 Previous Release (02_07_01)
12871 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
12872 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
12874 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
12875 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
12880 Updated Linux-specific code for core macro and OSL interface
12881 changes described above.
12883 Improved /proc/acpi/event. It now can be opened only once and has
12884 proper poll functionality.
12886 Fixed and restructured power management (acpi_bus).
12888 Only create /proc "view by type" when devices of that class exist.
12890 Fixed "charging/discharging" bug (and others) in acpi_battery.
12892 Improved thermal zone code.
12895 3) ASL Compiler, version X2039:
12898 Implemented the new compiler restriction on ASL String hex/octal
12899 escapes to non-null, ASCII values. An error results if an invalid
12900 value is used. (This will require an ACPI 2.0 specification
12903 AML object labels that are output to the optional C and ASM source
12904 are now prefixed with both the ACPI table signature and table ID
12905 to help guarantee uniqueness within a large BIOS project.
12908 ----------------------------------------
12909 Summary of changes for this label: 02_01_02
12911 1) ACPI CA Core Subsystem:
12913 ACPI 2.0 support is complete in the entire Core Subsystem and the
12914 ASL compiler. All new ACPI 2.0 operators are implemented and all
12915 other changes for ACPI 2.0 support are complete. With
12916 simultaneous code and data optimizations throughout the subsystem,
12917 ACPI 2.0 support has been implemented with almost no additional
12918 cost in terms of code and data size.
12920 Implemented a new mechanism for allocation of return buffers. If
12921 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
12922 be allocated on behalf of the caller. Consolidated all return
12923 buffer validation and allocation to a common procedure. Return
12924 buffers will be allocated via the primary OSL allocation interface
12925 since it appears that a separate pool is not needed by most users.
12926 If a separate pool is required for these buffers, the caller can
12927 still use the original mechanism and pre-allocate the buffer(s).
12929 Implemented support for string operands within the DerefOf
12932 Restructured the Hardware and Event managers to be table driven,
12933 simplifying the source code and reducing the amount of generated
12936 Split the common read/write low-level ACPI register bitfield
12937 procedure into a separate read and write, simplifying the code
12940 Obsoleted the AcpiOsCallocate OSL interface. This interface was
12941 used only a handful of times and didn't have enough critical mass
12942 for a separate interface. Replaced with a common calloc procedure
12945 Fixed a reported problem with the GPE number mapping mechanism
12946 that allows GPE1 numbers to be non-contiguous with GPE0.
12947 Reorganized the GPE information and shrunk a large array that was
12948 originally large enough to hold info for all possible GPEs (256)
12949 to simply large enough to hold all GPEs up to the largest GPE
12950 number on the machine.
12952 Fixed a reported problem with resource structure alignment on 64-
12955 Changed the AcpiEnableEvent and AcpiDisableEvent external
12956 interfaces to not require any flags for the common case of
12957 enabling/disabling a GPE.
12959 Implemented support to allow a "Notify" on a Processor object.
12961 Most TBDs in comments within the source code have been resolved
12965 Fixed a problem in the interpreter where a standalone parent
12966 prefix (^) was not handled correctly in the interpreter and
12969 Removed obsolete and unnecessary GPE save/restore code.
12971 Implemented Field support in the ASL Load operator. This allows a
12972 table to be loaded from a named field, in addition to loading a
12973 table directly from an Operation Region.
12975 Implemented timeout and handle support in the external Global Lock
12978 Fixed a problem in the AcpiDump utility where pathnames were no
12979 longer being generated correctly during the dump of named objects.
12981 Modified the AML debugger to give a full display of if/while
12982 predicates instead of just one AML opcode at a time. (The
12983 predicate can have several nested ASL statements.) The old method
12984 was confusing during single stepping.
12986 Code and Data Size: Current core subsystem library sizes are shown
12987 below. These are the code and data sizes for the acpica.lib
12988 produced by the Microsoft Visual C++ 6.0 compiler, and these
12989 values do not include any ACPI driver or OSPM code. The debug
12990 version of the code includes the debug output trace mechanism and
12991 has a larger code and data size. Note that these values will vary
12992 depending on the efficiency of the compiler and the compiler
12993 options used during generation.
12995 Previous Release (12_18_01)
12996 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
12997 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
12999 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13000 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13004 Implemented fix for PIIX reverse throttling errata (Processor
13007 Added new Limit interface (Processor and Thermal drivers)
13009 New thermal policy (Thermal driver)
13011 Many updates to /proc
13013 Battery "low" event support (Battery driver)
13015 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13017 IA32 - IA64 initialization unification, no longer experimental
13019 Menuconfig options redesigned
13021 3) ASL Compiler, version X2037:
13023 Implemented several new output features to simplify integration of
13024 AML code into firmware: 1) Output the AML in C source code with
13025 labels for each named ASL object. The original ASL source code
13026 is interleaved as C comments. 2) Output the AML in ASM source code
13027 with labels and interleaved ASL source. 3) Output the AML in
13028 raw hex table form, in either C or ASM.
13030 Implemented support for optional string parameters to the
13031 LoadTable operator.
13033 Completed support for embedded escape sequences within string
13034 literals. The compiler now supports all single character escapes
13035 as well as the Octal and Hex escapes. Note: the insertion of a
13036 null byte into a string literal (via the hex/octal escape) causes
13037 the string to be immediately terminated. A warning is issued.
13039 Fixed a problem where incorrect AML was generated for the case
13040 where an ASL namepath consists of a single parent prefix (
13042 ) with no trailing name segments.
13044 The compiler has been successfully generated with a 64-bit C
13050 ----------------------------------------
13051 Summary of changes for this label: 12_18_01
13055 Enhanced blacklist with reason and severity fields. Any table's
13056 signature may now be used to identify a blacklisted system.
13058 Call _PIC control method to inform the firmware which interrupt
13059 model the OS is using. Turn on any disabled link devices.
13061 Cleaned up busmgr /proc error handling (Andreas Dilger)
13063 2) ACPI CA Core Subsystem:
13065 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13068 Completed implementation of the ACPI 2.0 "Continue",
13069 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13070 operators. All new ACPI 2.0 operators are now implemented in both
13071 the ASL compiler and the AML interpreter. The only remaining ACPI
13072 2.0 task is support for the String data type in the DerefOf
13073 operator. Fixed a problem with AcquireMutex where the status code
13074 was lost if the caller had to actually wait for the mutex.
13076 Increased the maximum ASL Field size from 64K bits to 4G bits.
13078 Completed implementation of the external Global Lock interfaces --
13079 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13080 Handler parameters were added.
13082 Completed another pass at removing warnings and issues when
13083 compiling with 64-bit compilers. The code now compiles cleanly
13084 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13085 add and subtract (diff) macros have changed considerably.
13088 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13089 64-bit platforms, 32-bits on all others. This type is used
13090 wherever memory allocation and/or the C sizeof() operator is used,
13091 and affects the OSL memory allocation interfaces AcpiOsAllocate
13092 and AcpiOsCallocate.
13094 Implemented sticky user breakpoints in the AML debugger.
13096 Code and Data Size: Current core subsystem library sizes are shown
13097 below. These are the code and data sizes for the acpica.lib
13098 produced by the Microsoft Visual C++ 6.0 compiler, and these
13099 values do not include any ACPI driver or OSPM code. The debug
13100 version of the code includes the debug output trace mechanism and
13101 has a larger code and data size. Note that these values will vary
13102 depending on the efficiency of the compiler and the compiler
13103 options used during generation.
13105 Previous Release (12_05_01)
13106 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13107 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13109 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13110 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13112 3) ASL Compiler, version X2034:
13114 Now checks for (and generates an error if detected) the use of a
13115 Break or Continue statement without an enclosing While statement.
13118 Successfully generated the compiler with the Intel 64-bit C
13121 ----------------------------------------
13122 Summary of changes for this label: 12_05_01
13124 1) ACPI CA Core Subsystem:
13126 The ACPI 2.0 CopyObject operator is fully implemented. This
13127 operator creates a new copy of an object (and is also used to
13128 bypass the "implicit conversion" mechanism of the Store operator.)
13130 The ACPI 2.0 semantics for the SizeOf operator are fully
13131 implemented. The change is that performing a SizeOf on a
13132 reference object causes an automatic dereference of the object to
13133 tha actual value before the size is evaluated. This behavior was
13134 undefined in ACPI 1.0.
13136 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13137 have been implemented. The interrupt polarity and mode are now
13140 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13141 appearing in Package objects were not properly converted to
13142 integers when the internal Package was converted to an external
13143 object (via the AcpiEvaluateObject interface.)
13145 Fixed a problem with the namespace object deletion mechanism for
13146 objects created by control methods. There were two parts to this
13147 problem: 1) Objects created during the initialization phase method
13148 parse were not being deleted, and 2) The object owner ID mechanism
13149 to track objects was broken.
13151 Fixed a problem where the use of the ASL Scope operator within a
13152 control method would result in an invalid opcode exception.
13154 Fixed a problem introduced in the previous label where the buffer
13155 length required for the _PRT structure was not being returned
13158 Code and Data Size: Current core subsystem library sizes are shown
13159 below. These are the code and data sizes for the acpica.lib
13160 produced by the Microsoft Visual C++ 6.0 compiler, and these
13161 values do not include any ACPI driver or OSPM code. The debug
13162 version of the code includes the debug output trace mechanism and
13163 has a larger code and data size. Note that these values will vary
13164 depending on the efficiency of the compiler and the compiler
13165 options used during generation.
13167 Previous Release (11_20_01)
13168 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13169 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13172 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13173 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13177 Updated all files to apply cleanly against 2.4.16.
13179 Added basic PCI Interrupt Routing Table (PRT) support for IA32
13180 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
13181 version supports both static and dyanmic PRT entries, but dynamic
13182 entries are treated as if they were static (not yet
13183 reconfigurable). Architecture- specific code to use this data is
13184 absent on IA32 but should be available shortly.
13186 Changed the initialization sequence to start the ACPI interpreter
13187 (acpi_init) prior to initialization of the PCI driver (pci_init)
13188 in init/main.c. This ordering is required to support PRT and
13189 facilitate other (future) enhancement. A side effect is that the
13190 ACPI bus driver and certain device drivers can no longer be loaded
13193 Modified the 'make menuconfig' options to allow PCI Interrupt
13194 Routing support to be included without the ACPI Bus and other
13197 3) ASL Compiler, version X2033:
13199 Fixed some issues with the use of the new CopyObject and
13200 DataTableRegion operators. Both are fully functional.
13202 ----------------------------------------
13203 Summary of changes for this label: 11_20_01
13205 20 November 2001. Summary of changes for this release.
13207 1) ACPI CA Core Subsystem:
13209 Updated Index support to match ACPI 2.0 semantics. Storing a
13210 Integer, String, or Buffer to an Index of a Buffer will store only
13211 the least-significant byte of the source to the Indexed buffer
13212 byte. Multiple writes are not performed.
13214 Fixed a problem where the access type used in an AccessAs ASL
13215 operator was not recorded correctly into the field object.
13217 Fixed a problem where ASL Event objects were created in a
13218 signalled state. Events are now created in an unsignalled state.
13220 The internal object cache is now purged after table loading and
13221 initialization to reduce the use of dynamic kernel memory -- on
13222 the assumption that object use is greatest during the parse phase
13223 of the entire table (versus the run-time use of individual control
13226 ACPI 2.0 variable-length packages are now fully operational.
13228 Code and Data Size: Code and Data optimizations have permitted new
13229 feature development with an actual reduction in the library size.
13230 Current core subsystem library sizes are shown below. These are
13231 the code and data sizes for the acpica.lib produced by the
13232 Microsoft Visual C++ 6.0 compiler, and these values do not include
13233 any ACPI driver or OSPM code. The debug version of the code
13234 includes the debug output trace mechanism and has a larger code
13235 and data size. Note that these values will vary depending on the
13236 efficiency of the compiler and the compiler options used during
13239 Previous Release (11_09_01):
13240 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13241 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13244 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13245 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13249 Enhanced the ACPI boot-time initialization code to allow the use
13250 of Local APIC tables for processor enumeration on IA-32, and to
13251 pave the way for a fully MPS-free boot (on SMP systems) in the
13252 near future. This functionality replaces
13253 arch/i386/kernel/acpitables.c, which was introduced in an earlier
13254 2.4.15-preX release. To enable this feature you must add
13255 "acpi_boot=on" to the kernel command line -- see the help entry
13256 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
13259 Restructured the configuration options to allow boot-time table
13260 parsing support without inclusion of the ACPI Interpreter (and
13263 NOTE: This release does not include fixes for the reported events,
13264 power-down, and thermal passive cooling issues (coming soon).
13268 Added additional typechecking for Fields within restricted access
13269 Operation Regions. All fields within EC and CMOS regions must be
13270 declared with ByteAcc. All fields withing SMBus regions must be
13271 declared with the BufferAcc access type.
13273 Fixed a problem where the listing file output of control methods
13274 no longer interleaved the actual AML code with the ASL source
13280 ----------------------------------------
13281 Summary of changes for this label: 11_09_01
13283 1) ACPI CA Core Subsystem:
13285 Implemented ACPI 2.0-defined support for writes to fields with a
13286 Buffer, String, or Integer source operand that is smaller than the
13287 target field. In these cases, the source operand is zero-extended
13288 to fill the target field.
13290 Fixed a problem where a Field starting bit offset (within the
13291 parent operation region) was calculated incorrectly if the
13293 alignment of the field differed from the access width. This
13294 affected CreateWordField, CreateDwordField, CreateQwordField, and
13295 possibly other fields that use the "AccessAny" keyword.
13297 Fixed a problem introduced in the 11_02_01 release where indirect
13298 stores through method arguments did not operate correctly.
13302 Implemented boot-time ACPI table parsing support
13303 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
13304 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
13305 legacy BIOS interfaces (e.g. MPS) for the configuration of system
13306 processors, memory, and interrupts during setup_arch(). Note that
13307 this patch does not include the required architecture-specific
13308 changes required to apply this information -- subsequent patches
13309 will be posted for both IA32 and IA64 to achieve this.
13311 Added low-level sleep support for IA32 platforms, courtesy of Pat
13312 Mochel. This allows IA32 systems to transition to/from various
13313 sleeping states (e.g. S1, S3), although the lack of a centralized
13314 driver model and power-manageable drivers will prevent its
13315 (successful) use on most systems.
13317 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
13318 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
13319 tables" option, etc.
13321 Increased the default timeout for the EC driver from 1ms to 10ms
13322 (1000 cycles of 10us) to try to address AE_TIME errors during EC
13325 ----------------------------------------
13326 Summary of changes for this label: 11_02_01
13328 1) ACPI CA Core Subsystem:
13330 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
13331 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
13334 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
13335 changes to support ACPI 2.0 Qword field access. Read/Write
13336 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
13337 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
13338 the value parameter for the address space handler interface is now
13339 an ACPI_INTEGER. OSL implementations of these interfaces must now
13340 handle the case where the Width parameter is 64.
13342 Index Fields: Fixed a problem where unaligned bit assembly and
13343 disassembly for IndexFields was not supported correctly.
13345 Index and Bank Fields: Nested Index and Bank Fields are now
13346 supported. During field access, a check is performed to ensure
13347 that the value written to an Index or Bank register is not out of
13348 the range of the register. The Index (or Bank) register is
13349 written before each access to the field data. Future support will
13350 include allowing individual IndexFields to be wider than the
13351 DataRegister width.
13353 Fields: Fixed a problem where the AML interpreter was incorrectly
13354 attempting to write beyond the end of a Field/OpRegion. This was
13355 a boundary case that occurred when a DWORD field was written to a
13356 BYTE access OpRegion, forcing multiple writes and causing the
13357 interpreter to write one datum too many.
13359 Fields: Fixed a problem with Field/OpRegion access where the
13360 starting bit address of a field was incorrectly calculated if the
13361 current access type was wider than a byte (WordAcc, DwordAcc, or
13364 Fields: Fixed a problem where forward references to individual
13365 FieldUnits (individual Field names within a Field definition) were
13366 not resolved during the AML table load.
13368 Fields: Fixed a problem where forward references from a Field
13369 definition to the parent Operation Region definition were not
13370 resolved during the AML table load.
13372 Fields: Duplicate FieldUnit names within a scope are now detected
13373 during AML table load.
13375 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
13376 returned an incorrect name for the root node.
13378 Code and Data Size: Code and Data optimizations have permitted new
13379 feature development with an actual reduction in the library size.
13380 Current core subsystem library sizes are shown below. These are
13381 the code and data sizes for the acpica.lib produced by the
13382 Microsoft Visual C++ 6.0 compiler, and these values do not include
13383 any ACPI driver or OSPM code. The debug version of the code
13384 includes the debug output trace mechanism and has a larger code
13385 and data size. Note that these values will vary depending on the
13386 efficiency of the compiler and the compiler options used during
13389 Previous Release (10_18_01):
13390 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13391 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13394 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13395 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13399 Improved /proc processor output (Pavel Machek) Re-added
13400 MODULE_LICENSE("GPL") to all modules.
13402 3) ASL Compiler version X2030:
13404 Duplicate FieldUnit names within a scope are now detected and
13409 Programmer Reference updated to reflect OSL and address space
13410 handler interface changes described above.
13412 ----------------------------------------
13413 Summary of changes for this label: 10_18_01
13415 ACPI CA Core Subsystem:
13417 Fixed a problem with the internal object reference count mechanism
13418 that occasionally caused premature object deletion. This resolves
13419 all of the outstanding problem reports where an object is deleted
13420 in the middle of an interpreter evaluation. Although this problem
13421 only showed up in rather obscure cases, the solution to the
13422 problem involved an adjustment of all reference counts involving
13423 objects attached to namespace nodes.
13425 Fixed a problem with Field support in the interpreter where
13426 writing to an aligned field whose length is an exact multiple (2
13427 or greater) of the field access granularity would cause an attempt
13428 to write beyond the end of the field.
13430 The top level AML opcode execution functions within the
13431 interpreter have been renamed with a more meaningful and
13432 consistent naming convention. The modules exmonad.c and
13433 exdyadic.c were eliminated. New modules are exoparg1.c,
13434 exoparg2.c, exoparg3.c, and exoparg6.c.
13436 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
13438 Fixed a problem where the AML debugger was causing some internal
13439 objects to not be deleted during subsystem termination.
13441 Fixed a problem with the external AcpiEvaluateObject interface
13442 where the subsystem would fault if the named object to be
13443 evaluated refered to a constant such as Zero, Ones, etc.
13445 Fixed a problem with IndexFields and BankFields where the
13446 subsystem would fault if the index, data, or bank registers were
13447 not defined in the same scope as the field itself.
13449 Added printf format string checking for compilers that support
13450 this feature. Corrected more than 50 instances of issues with
13451 format specifiers within invocations of ACPI_DEBUG_PRINT
13452 throughout the core subsystem code.
13454 The ASL "Revision" operator now returns the ACPI support level
13455 implemented in the core - the value "2" since the ACPI 2.0 support
13456 is more than 50% implemented.
13458 Enhanced the output of the AML debugger "dump namespace" command
13459 to output in a more human-readable form.
13461 Current core subsystem library code sizes are shown below. These
13463 are the code and data sizes for the acpica.lib produced by the
13464 Microsoft Visual C++ 6.0 compiler, and these values do not include
13465 any ACPI driver or OSPM code. The debug version of the code
13466 includes the full debug trace mechanism -- leading to a much
13468 larger code and data size. Note that these values will vary
13469 depending on the efficiency of the compiler and the compiler
13470 options used during generation.
13472 Previous Label (09_20_01):
13473 Non-Debug Version: 65K Code, 5K Data, 70K Total
13474 Debug Version: 138K Code, 58K Data, 196K Total
13478 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13479 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13483 Implemented a "Bad BIOS Blacklist" to track machines that have
13484 known ASL/AML problems.
13486 Enhanced the /proc interface for the thermal zone driver and added
13487 support for _HOT (the critical suspend trip point). The 'info'
13488 file now includes threshold/policy information, and allows setting
13489 of _SCP (cooling preference) and _TZP (polling frequency) values
13490 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
13491 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
13492 preference to the passive/quiet mode (if supported by the ASL).
13494 Implemented a workaround for a gcc bug that resuted in an OOPs
13495 when loading the control method battery driver.
13497 ----------------------------------------
13498 Summary of changes for this label: 09_20_01
13500 ACPI CA Core Subsystem:
13502 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
13503 modified to allow individual GPE levels to be flagged as wake-
13504 enabled (i.e., these GPEs are to remain enabled when the platform
13507 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
13508 support wake-enabled GPEs. This means that upon entering the
13509 sleep state, all GPEs that are not wake-enabled are disabled.
13510 When leaving the sleep state, these GPEs are reenabled.
13512 A local double-precision divide/modulo module has been added to
13513 enhance portability to OS kernels where a 64-bit math library is
13514 not available. The new module is "utmath.c".
13516 Several optimizations have been made to reduce the use of CPU
13517 stack. Originally over 2K, the maximum stack usage is now below
13518 2K at 1860 bytes (1.82k)
13520 Fixed a problem with the AcpiGetFirmwareTable interface where the
13521 root table pointer was not mapped into a logical address properly.
13523 Fixed a problem where a NULL pointer was being dereferenced in the
13524 interpreter code for the ASL Notify operator.
13526 Fixed a problem where the use of the ASL Revision operator
13527 returned an error. This operator now returns the current version
13528 of the ACPI CA core subsystem.
13530 Fixed a problem where objects passed as control method parameters
13531 to AcpiEvaluateObject were always deleted at method termination.
13532 However, these objects may end up being stored into the namespace
13533 by the called method. The object reference count mechanism was
13534 applied to these objects instead of a force delete.
13536 Fixed a problem where static strings or buffers (contained in the
13537 AML code) that are declared as package elements within the ASL
13538 code could cause a fault because the interpreter would attempt to
13539 delete them. These objects are now marked with the "static
13540 object" flag to prevent any attempt to delete them.
13542 Implemented an interpreter optimization to use operands directly
13543 from the state object instead of extracting the operands to local
13544 variables. This reduces stack use and code size, and improves
13547 The module exxface.c was eliminated as it was an unnecessary extra
13550 Current core subsystem library code sizes are shown below. These
13551 are the code and data sizes for the acpica.lib produced by the
13552 Microsoft Visual C++ 6.0 compiler, and these values do not include
13553 any ACPI driver or OSPM code. The debug version of the code
13554 includes the full debug trace mechanism -- leading to a much
13555 larger code and data size. Note that these values will vary
13556 depending on the efficiency of the compiler and the compiler
13557 options used during generation.
13559 Non-Debug Version: 65K Code, 5K Data, 70K Total
13560 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
13561 Total (Previously 195K)
13565 Support for ACPI 2.0 64-bit integers has been added. All ACPI
13566 Integer objects are now 64 bits wide
13568 All Acpi data types and structures are now in lower case. Only
13569 Acpi macros are upper case for differentiation.
13573 Changes to the external interfaces as described above.
13575 ----------------------------------------
13576 Summary of changes for this label: 08_31_01
13578 ACPI CA Core Subsystem:
13580 A bug with interpreter implementation of the ASL Divide operator
13581 was found and fixed. The implicit function return value (not the
13582 explicit store operands) was returning the remainder instead of
13583 the quotient. This was a longstanding bug and it fixes several
13584 known outstanding issues on various platforms.
13586 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
13587 been further optimized for size. There are 700 invocations of the
13588 DEBUG_PRINT macro alone, so each optimization reduces the size of
13589 the debug version of the subsystem significantly.
13591 A stack trace mechanism has been implemented. The maximum stack
13592 usage is about 2K on 32-bit platforms. The debugger command "stat
13593 stack" will display the current maximum stack usage.
13595 All public symbols and global variables within the subsystem are
13596 now prefixed with the string "Acpi". This keeps all of the
13597 symbols grouped together in a kernel map, and avoids conflicts
13598 with other kernel subsystems.
13600 Most of the internal fixed lookup tables have been moved into the
13601 code segment via the const operator.
13603 Several enhancements have been made to the interpreter to both
13604 reduce the code size and improve performance.
13606 Current core subsystem library code sizes are shown below. These
13607 are the code and data sizes for the acpica.lib produced by the
13608 Microsoft Visual C++ 6.0 compiler, and these values do not include
13609 any ACPI driver or OSPM code. The debug version of the code
13610 includes the full debug trace mechanism which contains over 700
13611 invocations of the DEBUG_PRINT macro, 500 function entry macro
13612 invocations, and over 900 function exit macro invocations --
13613 leading to a much larger code and data size. Note that these
13614 values will vary depending on the efficiency of the compiler and
13615 the compiler options used during generation.
13617 Non-Debug Version: 64K Code, 5K Data, 69K Total
13618 Debug Version: 137K Code, 58K Data, 195K Total
13622 Implemented wbinvd() macro, pending a kernel-wide definition.
13624 Fixed /proc/acpi/event to handle poll() and short reads.
13626 ASL Compiler, version X2026:
13628 Fixed a problem introduced in the previous label where the AML
13630 code emitted for package objects produced packages with zero
13633 ----------------------------------------
13634 Summary of changes for this label: 08_16_01
13636 ACPI CA Core Subsystem:
13638 The following ACPI 2.0 ASL operators have been implemented in the
13639 AML interpreter (These are already supported by the Intel ASL
13640 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
13641 ToBuffer. Support for 64-bit AML constants is implemented in the
13642 AML parser, debugger, and disassembler.
13644 The internal memory tracking mechanism (leak detection code) has
13645 been upgraded to reduce the memory overhead (a separate tracking
13646 block is no longer allocated for each memory allocation), and now
13647 supports all of the internal object caches.
13649 The data structures and code for the internal object caches have
13650 been coelesced and optimized so that there is a single cache and
13651 memory list data structure and a single group of functions that
13652 implement generic cache management. This has reduced the code
13653 size in both the debug and release versions of the subsystem.
13655 The DEBUG_PRINT macro(s) have been optimized for size and replaced
13656 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
13657 different, because it generates a single call to an internal
13658 function. This results in a savings of about 90 bytes per
13659 invocation, resulting in an overall code and data savings of about
13660 16% in the debug version of the subsystem.
13664 Fixed C3 disk corruption problems and re-enabled C3 on supporting
13667 Integrated low-level sleep code by Patrick Mochel.
13669 Further tweaked source code Linuxization.
13675 Support for ACPI 2.0 variable length packages is fixed/completed.
13677 Fixed a problem where the optional length parameter for the ACPI
13678 2.0 ToString operator.
13680 Fixed multiple extraneous error messages when a syntax error is
13681 detected within the declaration line of a control method.
13683 ----------------------------------------
13684 Summary of changes for this label: 07_17_01
13686 ACPI CA Core Subsystem:
13688 Added a new interface named AcpiGetFirmwareTable to obtain any
13689 ACPI table via the ACPI signature. The interface can be called at
13690 any time during kernel initialization, even before the kernel
13691 virtual memory manager is initialized and paging is enabled. This
13692 allows kernel subsystems to obtain ACPI tables very early, even
13693 before the ACPI CA subsystem is initialized.
13695 Fixed a problem where Fields defined with the AnyAcc attribute
13696 could be resolved to the incorrect address under the following
13697 conditions: 1) the field width is larger than 8 bits and 2) the
13698 parent operation region is not defined on a DWORD boundary.
13700 Fixed a problem where the interpreter is not being locked during
13701 namespace initialization (during execution of the _INI control
13702 methods), causing an error when an attempt is made to release it
13705 ACPI 2.0 support in the AML Interpreter has begun and will be
13706 ongoing throughout the rest of this year. In this label, The Mod
13707 operator is implemented.
13709 Added a new data type to contain full PCI addresses named
13710 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
13711 and Function values.
13715 Enhanced the Linux version of the source code to change most
13716 capitalized ACPI type names to lowercase. For example, all
13717 instances of ACPI_STATUS are changed to acpi_status. This will
13718 result in a large diff, but the change is strictly cosmetic and
13719 aligns the CA code closer to the Linux coding standard.
13723 The interfaces to the PCI configuration space have been changed to
13724 add the PCI Segment number and to split the single 32-bit combined
13725 DeviceFunction field into two 16-bit fields. This was
13726 accomplished by moving the four values that define an address in
13727 PCI configuration space (segment, bus, device, and function) to
13728 the new ACPI_PCI_ID structure.
13730 The changes to the PCI configuration space interfaces led to a
13731 reexamination of the complete set of address space access
13732 interfaces for PCI, I/O, and Memory. The previously existing 18
13733 interfaces have proven difficult to maintain (any small change
13734 must be propagated across at least 6 interfaces) and do not easily
13735 allow for future expansion to 64 bits if necessary. Also, on some
13736 systems, it would not be appropriate to demultiplex the access
13737 width (8, 16, 32,or 64) before calling the OSL if the
13738 corresponding native OS interfaces contain a similar access width
13739 parameter. For these reasons, the 18 address space interfaces
13740 have been replaced by these 6 new ones:
13742 AcpiOsReadPciConfiguration
13743 AcpiOsWritePciConfiguration
13749 Added a new interface named AcpiOsGetRootPointer to allow the OSL
13750 to perform the platform and/or OS-specific actions necessary to
13751 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
13752 interface will simply call down to the CA core to perform the low-
13753 memory search for the table. On IA-64, the RSDP is obtained from
13754 EFI. Migrating this interface to the OSL allows the CA core to
13756 remain OS and platform independent.
13758 Added a new interface named AcpiOsSignal to provide a generic
13759 "function code and pointer" interface for various miscellaneous
13760 signals and notifications that must be made to the host OS. The
13761 first such signals are intended to support the ASL Fatal and
13762 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
13763 interface has been obsoleted.
13765 The definition of the AcpiFormatException interface has been
13766 changed to simplify its use. The caller no longer must supply a
13767 buffer to the call; A pointer to a const string is now returned
13768 directly. This allows the call to be easily used in printf
13769 statements, etc. since the caller does not have to manage a local
13773 ASL Compiler, Version X2025:
13775 The ACPI 2.0 Switch/Case/Default operators have been implemented
13776 and are fully functional. They will work with all ACPI 1.0
13777 interpreters, since the operators are simply translated to If/Else
13780 The ACPI 2.0 ElseIf operator is implemented and will also work
13781 with 1.0 interpreters, for the same reason.
13783 Implemented support for ACPI 2.0 variable-length packages. These
13784 packages have a separate opcode, and their size is determined by
13785 the interpreter at run-time.
13787 Documentation The ACPI CA Programmer Reference has been updated to
13788 reflect the new interfaces and changes to existing interfaces.
13790 ------------------------------------------
13791 Summary of changes for this label: 06_15_01
13793 ACPI CA Core Subsystem:
13795 Fixed a problem where a DWORD-accessed field within a Buffer
13796 object would get its byte address inadvertently rounded down to
13797 the nearest DWORD. Buffers are always Byte-accessible.
13799 ASL Compiler, version X2024:
13801 Fixed a problem where the Switch() operator would either fault or
13802 hang the compiler. Note however, that the AML code for this ACPI
13803 2.0 operator is not yet implemented.
13805 Compiler uses the new AcpiOsGetTimer interface to obtain compile
13808 Implementation of the CreateField operator automatically converts
13809 a reference to a named field within a resource descriptor from a
13810 byte offset to a bit offset if required.
13812 Added some missing named fields from the resource descriptor
13813 support. These are the names that are automatically created by the
13814 compiler to reference fields within a descriptor. They are only
13815 valid at compile time and are not passed through to the AML
13818 Resource descriptor named fields are now typed as Integers and
13819 subject to compile-time typechecking when used in expressions.
13821 ------------------------------------------
13822 Summary of changes for this label: 05_18_01
13824 ACPI CA Core Subsystem:
13826 Fixed a couple of problems in the Field support code where bits
13827 from adjacent fields could be returned along with the proper field
13828 bits. Restructured the field support code to improve performance,
13829 readability and maintainability.
13831 New DEBUG_PRINTP macro automatically inserts the procedure name
13832 into the output, saving hundreds of copies of procedure name
13833 strings within the source, shrinking the memory footprint of the
13834 debug version of the core subsystem.
13836 Source Code Structure:
13838 The source code directory tree was restructured to reflect the
13839 current organization of the component architecture. Some files
13840 and directories have been moved and/or renamed.
13844 Fixed leaking kacpidpc processes.
13846 Fixed queueing event data even when /proc/acpi/event is not
13849 ASL Compiler, version X2020:
13851 Memory allocation performance enhancement - over 24X compile time
13852 improvement on large ASL files. Parse nodes and namestring
13853 buffers are now allocated from a large internal compiler buffer.
13855 The temporary .SRC file is deleted unless the "-s" option is
13858 The "-d" debug output option now sends all output to the .DBG file
13859 instead of the console.
13861 "External" second parameter is now optional
13863 "ElseIf" syntax now properly allows the predicate
13865 Last operand to "Load" now recognized as a Target operand
13867 Debug object can now be used anywhere as a normal object.
13869 ResourceTemplate now returns an object of type BUFFER
13871 EISAID now returns an object of type INTEGER
13873 "Index" now works with a STRING operand
13875 "LoadTable" now accepts optional parameters
13877 "ToString" length parameter is now optional
13879 "Interrupt (ResourceType," parse error fixed.
13881 "Register" with a user-defined region space parse error fixed
13883 Escaped backslash at the end of a string ("\\") scan/parse error
13886 "Revision" is now an object of type INTEGER.
13890 ------------------------------------------
13891 Summary of changes for this label: 05_02_01
13895 /proc/acpi/event now blocks properly.
13897 Removed /proc/sys/acpi. You can still dump your DSDT from
13900 ACPI CA Core Subsystem:
13902 Fixed a problem introduced in the previous label where some of the
13903 "small" resource descriptor types were not recognized.
13905 Improved error messages for the case where an ASL Field is outside
13906 the range of the parent operation region.
13908 ASL Compiler, version X2018:
13911 Added error detection for ASL Fields that extend beyond the length
13912 of the parent operation region (only if the length of the region
13913 is known at compile time.) This includes fields that have a
13914 minimum access width that is smaller than the parent region, and
13915 individual field units that are partially or entirely beyond the
13916 extent of the parent.
13920 ------------------------------------------
13921 Summary of changes for this label: 04_27_01
13923 ACPI CA Core Subsystem:
13925 Fixed a problem where the namespace mutex could be released at the
13926 wrong time during execution of AcpiRemoveAddressSpaceHandler.
13928 Added optional thread ID output for debug traces, to simplify
13929 debugging of multiple threads. Added context switch notification
13930 when the debug code realizes that a different thread is now
13931 executing ACPI code.
13933 Some additional external data types have been prefixed with the
13934 string "ACPI_" for consistency. This may effect existing code.
13935 The data types affected are the external callback typedefs - e.g.,
13937 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
13941 Fixed an issue with the OSL semaphore implementation where a
13942 thread was waking up with an error from receiving a SIGCHLD
13945 Linux version of ACPI CA now uses the system C library for string
13946 manipulation routines instead of a local implementation.
13948 Cleaned up comments and removed TBDs.
13950 ASL Compiler, version X2017:
13952 Enhanced error detection and reporting for all file I/O
13957 Programmer Reference updated to version 1.06.
13961 ------------------------------------------
13962 Summary of changes for this label: 04_13_01
13964 ACPI CA Core Subsystem:
13966 Restructured support for BufferFields and RegionFields.
13967 BankFields support is now fully operational. All known 32-bit
13968 limitations on field sizes have been removed. Both BufferFields
13969 and (Operation) RegionFields are now supported by the same field
13972 Resource support now supports QWORD address and IO resources. The
13973 16/32/64 bit address structures and the Extended IRQ structure
13974 have been changed to properly handle Source Resource strings.
13976 A ThreadId of -1 is now used to indicate a "mutex not acquired"
13977 condition internally and must never be returned by AcpiOsThreadId.
13978 This reserved value was changed from 0 since Unix systems allow a
13983 Driver code reorganized to enhance portability
13985 Added a kernel configuration option to control ACPI_DEBUG
13987 Fixed the EC driver to honor _GLK.
13989 ASL Compiler, version X2016:
13991 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
13992 address space was set to 0, not 0x7f as it should be.
13994 ------------------------------------------
13995 Summary of changes for this label: 03_13_01
13997 ACPI CA Core Subsystem:
13999 During ACPI initialization, the _SB_._INI method is now run if
14002 Notify handler fix - notifies are deferred until the parent method
14003 completes execution. This fixes the "mutex already acquired"
14004 issue seen occasionally.
14006 Part of the "implicit conversion" rules in ACPI 2.0 have been
14007 found to cause compatibility problems with existing ASL/AML. The
14008 convert "result-to-target-type" implementation has been removed
14009 for stores to method Args and Locals. Source operand conversion
14010 is still fully implemented. Possible changes to ACPI 2.0
14011 specification pending.
14013 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14016 Fix for compiler warnings for 64-bit compiles.
14020 /proc output aligned for easier parsing.
14022 Release-version compile problem fixed.
14024 New kernel configuration options documented in Configure.help.
14026 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14031 Power resource driver integrated with bus manager.
14033 Fixed kernel fault during active cooling for thermal zones.
14037 The source code tree has been restructured.
14041 ------------------------------------------
14042 Summary of changes for this label: 03_02_01
14044 Linux OS Services Layer (OSL):
14046 Major revision of all Linux-specific code.
14048 Modularized all ACPI-specific drivers.
14050 Added new thermal zone and power resource drivers.
14052 Revamped /proc interface (new functionality is under /proc/acpi).
14054 New kernel configuration options.
14056 Linux known issues:
14058 New kernel configuration options not documented in Configure.help
14062 Module dependencies not currently implemented. If used, they
14063 should be loaded in this order: busmgr, power, ec, system,
14064 processor, battery, ac_adapter, button, thermal.
14066 Modules will not load if CONFIG_MODVERSION is set.
14068 IBM 600E - entering S5 may reboot instead of shutting down.
14070 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14073 Some systems may fail with "execution mutex already acquired"
14076 ACPI CA Core Subsystem:
14078 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14079 for the deadlock detection code. Defined to return a non-zero, 32-
14080 bit thread ID for the currently executing thread. May be a non-
14081 zero constant integer on single-thread systems.
14083 Implemented deadlock detection for internal subsystem mutexes. We
14084 may add conditional compilation for this code (debug only) later.
14086 ASL/AML Mutex object semantics are now fully supported. This
14087 includes multiple acquires/releases by owner and support for the
14089 Mutex SyncLevel parameter.
14091 A new "Force Release" mechanism automatically frees all ASL
14092 Mutexes that have been acquired but not released when a thread
14093 exits the interpreter. This forces conformance to the ACPI spec
14094 ("All mutexes must be released when an invocation exits") and
14095 prevents deadlocked ASL threads. This mechanism can be expanded
14096 (later) to monitor other resource acquisitions if OEM ASL code
14097 continues to misbehave (which it will).
14099 Several new ACPI exception codes have been added for the Mutex
14102 Recursive method calls are now allowed and supported (the ACPI
14103 spec does in fact allow recursive method calls.) The number of
14104 recursive calls is subject to the restrictions imposed by the
14105 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14108 Implemented support for the SyncLevel parameter for control
14109 methods (ACPI 2.0 feature)
14111 Fixed a deadlock problem when multiple threads attempted to use
14114 Fixed a problem where the string length of a String package
14115 element was not always set in a package returned from
14116 AcpiEvaluateObject.
14118 Fixed a problem where the length of a String package element was
14119 not always included in the length of the overall package returned
14120 from AcpiEvaluateObject.
14122 Added external interfaces (Acpi*) to the ACPI debug memory
14123 manager. This manager keeps a list of all outstanding
14124 allocations, and can therefore detect memory leaks and attempts to
14125 free memory blocks more than once. Useful for code such as the
14126 power manager, etc. May not be appropriate for device drivers.
14127 Performance with the debug code enabled is slow.
14129 The ACPI Global Lock is now an optional hardware element.
14131 ASL Compiler Version X2015:
14133 Integrated changes to allow the compiler to be generated on
14134 multiple platforms.
14136 Linux makefile added to generate the compiler on Linux
14140 All platform-specific headers have been moved to their own
14141 subdirectory, Include/Platform.
14143 New source file added, Interpreter/ammutex.c
14145 New header file, Include/acstruct.h
14149 The programmer reference has been updated for the following new
14150 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
14152 ------------------------------------------
14153 Summary of changes for this label: 02_08_01
14155 Core ACPI CA Subsystem: Fixed a problem where an error was
14156 incorrectly returned if the return resource buffer was larger than
14157 the actual data (in the resource interfaces).
14159 References to named objects within packages are resolved to the
14161 full pathname string before packages are returned directly (via
14162 the AcpiEvaluateObject interface) or indirectly via the resource
14165 Linux OS Services Layer (OSL):
14167 Improved /proc battery interface.
14170 Added C-state debugging output and other miscellaneous fixes.
14172 ASL Compiler Version X2014:
14174 All defined method arguments can now be used as local variables,
14175 including the ones that are not actually passed in as parameters.
14176 The compiler tracks initialization of the arguments and issues an
14177 exception if they are used without prior assignment (just like
14180 The -o option now specifies a filename prefix that is used for all
14181 output files, including the AML output file. Otherwise, the
14182 default behavior is as follows: 1) the AML goes to the file
14183 specified in the DSDT. 2) all other output files use the input
14184 source filename as the base.
14186 ------------------------------------------
14187 Summary of changes for this label: 01_25_01
14189 Core ACPI CA Subsystem: Restructured the implementation of object
14190 store support within the interpreter. This includes support for
14191 the Store operator as well as any ASL operators that include a
14194 Partially implemented support for Implicit Result-to-Target
14195 conversion. This is when a result object is converted on the fly
14196 to the type of an existing target object. Completion of this
14197 support is pending further analysis of the ACPI specification
14198 concerning this matter.
14200 CPU-specific code has been removed from the subsystem (hardware
14203 New Power Management Timer functions added
14205 Linux OS Services Layer (OSL): Moved system state transition code
14206 to the core, fixed it, and modified Linux OSL accordingly.
14208 Fixed C2 and C3 latency calculations.
14211 We no longer use the compilation date for the version message on
14212 initialization, but retrieve the version from AcpiGetSystemInfo().
14214 Incorporated for fix Sony VAIO machines.
14216 Documentation: The Programmer Reference has been updated and
14220 ASL Compiler: Version X2013: Fixed a problem where the line
14221 numbering and error reporting could get out of sync in the
14222 presence of multiple include files.
14224 ------------------------------------------
14225 Summary of changes for this label: 01_15_01
14227 Core ACPI CA Subsystem:
14229 Implemented support for type conversions in the execution of the
14230 ASL Concatenate operator (The second operand is converted to
14231 match the type of the first operand before concatenation.)
14233 Support for implicit source operand conversion is partially
14234 implemented. The ASL source operand types Integer, Buffer, and
14235 String are freely interchangeable for most ASL operators and are
14236 converted by the interpreter on the fly as required. Implicit
14237 Target operand conversion (where the result is converted to the
14238 target type before storing) is not yet implemented.
14240 Support for 32-bit and 64-bit BCD integers is implemented.
14242 Problem fixed where a field read on an aligned field could cause a
14243 read past the end of the field.
14245 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
14246 does not return a value, but the caller expects one. (The ASL
14247 compiler flags this as a warning.)
14252 1. Static typechecking of all operands is implemented. This
14253 prevents the use of invalid objects (such as using a Package where
14254 an Integer is required) at compile time instead of at interpreter
14256 2. The ASL source line is printed with ALL errors and warnings.
14257 3. Bug fix for source EOF without final linefeed.
14258 4. Debug option is split into a parse trace and a namespace trace.
14259 5. Namespace output option (-n) includes initial values for
14260 integers and strings.
14261 6. Parse-only option added for quick syntax checking.
14262 7. Compiler checks for duplicate ACPI name declarations
14265 1. Relaxed typechecking to allow interchangeability between
14266 strings, integers, and buffers. These types are now converted by
14267 the interpreter at runtime.
14268 2. Compiler reports time taken by each internal subsystem in the
14272 ------------------------------------------
14273 Summary of changes for this label: 12_14_00
14277 This is the first official release of the compiler. Since the
14278 compiler requires elements of the Core Subsystem, this label
14279 synchronizes everything.
14281 ------------------------------------------
14282 Summary of changes for this label: 12_08_00
14285 Fixed a problem where named references within the ASL definition
14286 of both OperationRegions and CreateXXXFields did not work
14287 properly. The symptom was an AE_AML_OPERAND_TYPE during
14288 initialization of the region/field. This is similar (but not
14289 related internally) to the problem that was fixed in the last
14292 Implemented both 32-bit and 64-bit support for the BCD ASL
14293 functions ToBCD and FromBCD.
14295 Updated all legal headers to include "2000" in the copyright
14298 ------------------------------------------
14299 Summary of changes for this label: 12_01_00
14301 Fixed a problem where method invocations within the ASL definition
14302 of both OperationRegions and CreateXXXFields did not work
14303 properly. The symptom was an AE_AML_OPERAND_TYPE during
14304 initialization of the region/field:
14306 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
14307 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
14310 Fixed a problem where operators with more than one nested
14311 subexpression would fail. The symptoms were varied, by mostly
14312 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
14313 problem that has gone unnoticed until now.
14315 Subtract (Add (1,2), Multiply (3,4))
14317 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
14318 previous build (The prefix part of a relative path was handled
14321 Fixed a problem where Operation Region initialization failed if
14322 the operation region name was a "namepath" instead of a simple
14323 "nameseg". Symptom was an AE_NO_OPERAND error.
14325 Fixed a problem where an assignment to a local variable via the
14326 indirect RefOf mechanism only worked for the first such
14327 assignment. Subsequent assignments were ignored.
14329 ------------------------------------------
14330 Summary of changes for this label: 11_15_00
14332 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
14333 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
14334 the AML interpreter does NOT have support for the new 2.0 ASL
14335 grammar terms at this time.
14337 All ACPI hardware access is via the GAS structures in the ACPI 2.0
14340 All physical memory addresses across all platforms are now 64 bits
14341 wide. Logical address width remains dependent on the platform
14344 AcpiOsMapMemory interface changed to a 64-bit physical address.
14346 The AML interpreter integer size is now 64 bits, as per the ACPI
14349 For backwards compatibility with ACPI 1.0, ACPI tables with a
14350 revision number less than 2 use 32-bit integers only.
14352 Fixed a problem where the evaluation of OpRegion operands did not
14353 always resolve them to numbers properly.
14355 ------------------------------------------
14356 Summary of changes for this label: 10_20_00
14358 Fix for CBN_._STA issue. This fix will allow correct access to
14359 CBN_ OpRegions when the _STA returns 0x8.
14361 Support to convert ACPI constants (Ones, Zeros, One) to actual
14362 values before a package object is returned
14364 Fix for method call as predicate to if/while construct causing
14365 incorrect if/while behavior
14367 Fix for Else block package lengths sometimes calculated wrong (if
14370 Fix for Processor object length field, was always zero
14372 Table load abort if FACP sanity check fails
14374 Fix for problem with Scope(name) if name already exists
14376 Warning emitted if a named object referenced cannot be found
14377 (resolved) during method execution.
14383 ------------------------------------------
14384 Summary of changes for this label: 9_29_00
14386 New table initialization interfaces: AcpiInitializeSubsystem no
14387 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
14388 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
14389 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
14392 Note: These interface changes require changes to all existing OSDs
14394 The PCI_Config default address space handler is always installed
14395 at the root namespace object.
14397 -------------------------------------------
14398 Summary of changes for this label: 09_15_00
14400 The new initialization architecture is implemented. New
14401 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
14402 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
14404 (Namespace is automatically loaded when a table is loaded)
14406 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
14407 52 bytes to 32 bytes. There is usually one of these for every
14408 namespace object, so the memory savings is significant.
14410 Implemented just-in-time evaluation of the CreateField operators.
14412 Bug fixes for IA-64 support have been integrated.
14414 Additional code review comments have been implemented
14416 The so-called "third pass parse" has been replaced by a final walk
14417 through the namespace to initialize all operation regions (address
14418 spaces) and fields that have not yet been initialized during the
14419 execution of the various _INI and REG methods.
14421 New file - namespace/nsinit.c
14423 -------------------------------------------
14424 Summary of changes for this label: 09_01_00
14426 Namespace manager data structures have been reworked to change the
14427 primary object from a table to a single object. This has
14428 resulted in dynamic memory savings of 3X within the namespace and
14429 2X overall in the ACPI CA subsystem.
14431 Fixed problem where the call to AcpiEvFindPciRootBuses was
14432 inadvertently left commented out.
14434 Reduced the warning count when generating the source with the GCC
14437 Revision numbers added to each module header showing the
14438 SourceSafe version of the file. Please refer to this version
14439 number when giving us feedback or comments on individual modules.
14441 The main object types within the subsystem have been renamed to
14442 clarify their purpose:
14444 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
14445 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
14446 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
14448 NOTE: no changes to the initialization sequence are included in
14451 -------------------------------------------
14452 Summary of changes for this label: 08_23_00
14454 Fixed problem where TerminateControlMethod was being called
14455 multiple times per method
14457 Fixed debugger problem where single stepping caused a semaphore to
14460 Improved performance through additional parse object caching -
14461 added ACPI_EXTENDED_OP type
14463 -------------------------------------------
14464 Summary of changes for this label: 08_10_00
14466 Parser/Interpreter integration: Eliminated the creation of
14467 complete parse trees for ACPI tables and control methods.
14468 Instead, parse subtrees are created and then deleted as soon as
14469 they are processed (Either entered into the namespace or executed
14470 by the interpreter). This reduces the use of dynamic kernel
14471 memory significantly. (about 10X)
14473 Exception codes broken into classes and renumbered. Be sure to
14474 recompile all code that includes acexcep.h. Hopefully we won't
14475 have to renumber the codes again now that they are split into
14476 classes (environment, programmer, AML code, ACPI table, and
14479 Fixed some additional alignment issues in the Resource Manager
14482 Implemented semaphore tracking in the AcpiExec utility, and fixed
14483 several places where mutexes/semaphores were being unlocked
14484 without a corresponding lock operation. There are no known
14485 semaphore or mutex "leaks" at this time.
14487 Fixed the case where an ASL Return operator is used to return an
14490 -------------------------------------------
14491 Summary of changes for this label: 07_28_00
14493 Fixed a problem with the way addresses were calculated in
14494 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
14495 manifested itself when a Field was created with WordAccess or
14496 DwordAccess, but the field unit defined within the Field was less
14498 than a Word or Dword.
14500 Fixed a problem in AmlDumpOperands() module's loop to pull
14501 operands off of the operand stack to display information. The
14502 problem manifested itself as a TLB error on 64-bit systems when
14503 accessing an operand stack with two or more operands.
14505 Fixed a problem with the PCI configuration space handlers where
14506 context was getting confused between accesses. This required a
14507 change to the generic address space handler and address space
14508 setup definitions. Handlers now get both a global handler context
14509 (this is the one passed in by the user when executing
14510 AcpiInstallAddressSpaceHandler() and a specific region context
14511 that is unique to each region (For example, the _ADR, _SEG and
14512 _BBN values associated with a specific region). The generic
14513 function definitions have changed to the following:
14515 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
14516 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
14517 *HandlerContext, // This used to be void *Context void
14518 *RegionContext); // This is an additional parameter
14520 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
14521 RegionHandle, UINT32 Function, void *HandlerContext, void
14522 **RegionContext); // This used to be **ReturnContext
14524 -------------------------------------------
14525 Summary of changes for this label: 07_21_00
14527 Major file consolidation and rename. All files within the
14528 interpreter have been renamed as well as most header files. This
14529 was done to prevent collisions with existing files in the host
14530 OSs -- filenames such as "config.h" and "global.h" seem to be
14531 quite common. The VC project files have been updated. All
14532 makefiles will require modification.
14534 The parser/interpreter integration continues in Phase 5 with the
14535 implementation of a complete 2-pass parse (the AML is parsed
14536 twice) for each table; This avoids the construction of a huge
14537 parse tree and therefore reduces the amount of dynamic memory
14538 required by the subsystem. Greater use of the parse object cache
14539 means that performance is unaffected.
14541 Many comments from the two code reviews have been rolled in.
14543 The 64-bit alignment support is complete.
14545 -------------------------------------------
14546 Summary of changes for this label: 06_30_00
14548 With a nod and a tip of the hat to the technology of yesteryear,
14549 we've added support in the source code for 80 column output
14550 devices. The code is now mostly constrained to 80 columns or
14551 less to support environments and editors that 1) cannot display
14552 or print more than 80 characters on a single line, and 2) cannot
14553 disable line wrapping.
14555 A major restructuring of the namespace data structure has been
14556 completed. The result is 1) cleaner and more
14557 understandable/maintainable code, and 2) a significant reduction
14558 in the dynamic memory requirement for each named ACPI object
14561 -------------------------------------------
14562 Summary of changes for this label: 06_23_00
14564 Linux support has been added. In order to obtain approval to get
14565 the ACPI CA subsystem into the Linux kernel, we've had to make
14566 quite a few changes to the base subsystem that will affect all
14567 users (all the changes are generic and OS- independent). The
14568 effects of these global changes have been somewhat far reaching.
14569 Files have been merged and/or renamed and interfaces have been
14570 renamed. The major changes are described below.
14572 Osd* interfaces renamed to AcpiOs* to eliminate namespace
14573 pollution/confusion within our target kernels. All OSD
14574 interfaces must be modified to match the new naming convention.
14576 Files merged across the subsystem. A number of the smaller source
14577 and header files have been merged to reduce the file count and
14578 increase the density of the existing files. There are too many
14579 to list here. In general, makefiles that call out individual
14580 files will require rebuilding.
14582 Interpreter files renamed. All interpreter files now have the
14583 prefix am* instead of ie* and is*.
14585 Header files renamed: The acapi.h file is now acpixf.h. The
14586 acpiosd.h file is now acpiosxf.h. We are removing references to
14587 the acronym "API" since it is somewhat windowsy. The new name is
14588 "external interface" or xface or xf in the filenames.j
14591 All manifest constants have been forced to upper case (some were
14592 mixed case.) Also, the string "ACPI_" has been prepended to many
14593 (not all) of the constants, typedefs, and structs.
14595 The globals "DebugLevel" and "DebugLayer" have been renamed
14596 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
14598 All other globals within the subsystem are now prefixed with
14599 "AcpiGbl_" Internal procedures within the subsystem are now
14600 prefixed with "Acpi" (with only a few exceptions). The original
14601 two-letter abbreviation for the subcomponent remains after "Acpi"
14602 - for example, CmCallocate became AcpiCmCallocate.
14604 Added a source code translation/conversion utility. Used to
14605 generate the Linux source code, it can be modified to generate
14606 other types of source as well. Can also be used to cleanup
14607 existing source by removing extraneous spaces and blank lines.
14608 Found in tools/acpisrc/*
14610 OsdUnMapMemory was renamed to OsdUnmapMemory and then
14611 AcpiOsUnmapMemory. (UnMap became Unmap).
14613 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
14614 When set to one, this indicates that the caller wants to use the
14616 semaphore as a mutex, not a counting semaphore. ACPI CA uses
14617 both types. However, implementers of this call may want to use
14618 different OS primitives depending on the type of semaphore
14619 requested. For example, some operating systems provide separate
14621 "mutex" and "semaphore" interfaces - where the mutex interface is
14622 much faster because it doesn't have all the overhead of a full
14623 semaphore implementation.
14625 Fixed a deadlock problem where a method that accesses the PCI
14626 address space can block forever if it is the first access to the
14629 -------------------------------------------
14630 Summary of changes for this label: 06_02_00
14632 Support for environments that cannot handle unaligned data
14633 accesses (e.g. firmware and OS environments devoid of alignment
14634 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
14635 been added (via configurable macros) in these three areas: -
14636 Transfer of data from the raw AML byte stream is done via byte
14637 moves instead of word/dword/qword moves. - External objects are
14638 aligned within the user buffer, including package elements (sub-
14639 objects). - Conversion of name strings to UINT32 Acpi Names is now
14642 The Store operator was modified to mimic Microsoft's
14643 implementation when storing to a Buffer Field.
14645 Added a check of the BM_STS bit before entering C3.
14647 The methods subdirectory has been obsoleted and removed. A new
14648 file, cmeval.c subsumes the functionality.
14650 A 16-bit (DOS) version of AcpiExec has been developed. The
14651 makefile is under the acpiexec directory.