1 ----------------------------------------
2 14 February 2014. Summary of changes for version 20140214:
4 1) ACPICA kernel-resident subsystem:
6 Implemented a new mechanism to proactively prevent problems with ill-
7 behaved reentrant control methods that create named ACPI objects. This
8 behavior is illegal as per the ACPI specification, but is nonetheless
9 frequently seen in the field. Previously, this could lead to an
10 AE_ALREADY_EXISTS exception if the method was actually entered by more
11 than one thread. This new mechanism detects such methods at table load
12 time and marks them "serialized" to prevent reentrancy. A new global
13 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
14 feature if desired. This mechanism and global option obsoletes and
15 supersedes the previous AcpiGbl_SerializeAllMethods option.
17 Added the "Windows 2013" string to the _OSI support. ACPICA will now
18 respond TRUE to _OSI queries with this string. It is the stated policy of
19 ACPICA to add new strings to the _OSI support as soon as possible after
20 they are defined. See the full ACPICA _OSI policy which has been added to
21 the utilities/utosi.c file.
23 Hardened/updated the _PRT return value auto-repair code:
24 1) Do not abort the repair on a single subpackage failure, continue to
25 check all subpackages.
26 2) Add check for the minimum subpackage length (4).
27 3) Properly handle extraneous NULL package elements.
29 Added support to avoid the possibility of infinite loops when traversing
30 object linked lists. Never allow an infinite loop, even in the face of
31 corrupted object lists.
33 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
34 pack(pop) directives to ensure that the ACPICA headers are independent of
35 compiler settings or other host headers.
37 Example Code and Data Size: These are the sizes for the OS-independent
38 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
39 debug version of the code includes the debug output trace mechanism and
40 has a much larger code and data size.
43 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
44 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
46 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
47 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
50 2) iASL Compiler/Disassembler and Tools:
52 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
53 first reserved field was incorrectly forced to have a value of zero. This
54 change correctly forces the field to have a value of one. ACPICA BZ 1081.
56 Debugger: Added missing support for the "Extra" and "Data" subobjects
57 when displaying object data.
59 Debugger: Added support to display entire object linked lists when
60 displaying object data.
62 iASL: Removed the obsolete -g option to obtain ACPI tables from the
63 Windows registry. This feature has been superseded by the acpidump
66 ----------------------------------------
67 14 January 2014. Summary of changes for version 20140114:
69 1) ACPICA kernel-resident subsystem:
71 Updated all ACPICA copyrights and signons to 2014. Added the 2014
72 copyright to all module headers and signons, including the standard Linux
73 header. This affects virtually every file in the ACPICA core subsystem,
74 iASL compiler, all ACPICA utilities, and the test suites.
76 Improved parameter validation for AcpiInstallGpeBlock. Added the
78 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
79 2) There is not already a GPE block attached to the device.
80 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
83 Correctly support "references" in the ACPI_OBJECT. This change fixes the
84 support to allow references (namespace nodes) to be passed as arguments
85 to control methods via the evaluate object interface. This is probably
86 most useful for testing purposes, however.
88 Improved support for 32/64 bit physical addresses in printf()-like
89 output. This change improves the support for physical addresses in printf
90 debug statements and other output on both 32-bit and 64-bit hosts. It
91 consistently outputs the appropriate number of bytes for each host. The
92 %p specifier is unsatisfactory since it does not emit uniform output on
93 all hosts/clib implementations (on some, leading zeros are not supported,
94 leading to difficult-to-read output).
96 Example Code and Data Size: These are the sizes for the OS-independent
97 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
98 debug version of the code includes the debug output trace mechanism and
99 has a much larger code and data size.
102 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
103 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
105 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
106 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
109 2) iASL Compiler/Disassembler and Tools:
111 iASL: Fix a possible fault when using the Connection() operator. Fixes a
112 problem if the parent Field definition for the Connection operator refers
113 to an operation region that does not exist. ACPICA BZ 1064.
115 AcpiExec: Load of local test tables is now optional. The utility has the
116 capability to load some various tables to test features of ACPICA.
117 However, there are enough of them that the output of the utility became
118 confusing. With this change, only the required local tables are displayed
119 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
120 line specification. This makes the default output simler and easier to
121 understand. The -el command line option restores the original behavior
122 for testing purposes.
124 AcpiExec: Added support for overlapping operation regions. This change
125 expands the simulation of operation regions by supporting regions that
126 overlap within the given address space. Supports SystemMemory and
127 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
129 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
130 allows AcpiExec to simulate these address spaces, similar to the current
131 support for SystemMemory and SystemIO.
133 Debugger: Added new command to read/write/compare all namespace objects.
134 The command "test objects" will exercise the entire namespace by writing
135 new values to each data object, and ensuring that the write was
136 successful. The original value is then restored and verified.
138 Debugger: Added the "test predefined" command. This change makes this
139 test public and puts it under the new "test" command. The test executes
140 each and every predefined name within the current namespace.
142 ----------------------------------------
143 18 December 2013. Summary of changes for version 20131218:
145 Global note: The ACPI 5.0A specification was released this month. There
146 are no changes needed for ACPICA since this release of ACPI is an
147 errata/clarification release. The specification is available at
151 1) ACPICA kernel-resident subsystem:
153 Added validation of the XSDT root table if it is present. Some older
154 platforms contain an XSDT that is ill-formed or otherwise invalid (such
155 as containing some or all entries that are NULL pointers). This change
156 adds a new function to validate the XSDT before actually using it. If the
157 XSDT is found to be invalid, ACPICA will now automatically fall back to
158 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
159 ACPICA and enhanced by Lv Zheng and Bob Moore.
161 Added a runtime option to ignore the XSDT and force the use of the RSDT.
162 This change adds a runtime option that will force ACPICA to use the RSDT
163 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
164 requires that an XSDT be used instead of the RSDT, the XSDT has been
165 found to be corrupt or ill-formed on some machines. Lv Zheng.
167 Added a runtime option to favor 32-bit FADT register addresses over the
168 64-bit addresses. This change adds an option to favor 32-bit FADT
169 addresses when there is a conflict between the 32-bit and 64-bit versions
170 of the same register. The default behavior is to use the 64-bit version
171 in accordance with the ACPI specification. This can now be overridden via
172 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
174 During the change above, the internal "Convert FADT" and "Verify FADT"
175 functions have been merged to simplify the code, making it easier to
176 understand and maintain. ACPICA BZ 933.
178 Improve exception reporting and handling for GPE block installation.
179 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
180 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
182 Added helper macros to extract bus/segment numbers from the HEST table.
183 This change adds two macros to extract the encoded bus and segment
184 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
185 Betty Dall <betty.dall@hp.com>
187 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
188 by ACPICA. It is not a public macro, so it should have no effect on
189 existing OSV code. Lv Zheng.
191 Example Code and Data Size: These are the sizes for the OS-independent
192 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
193 debug version of the code includes the debug output trace mechanism and
194 has a much larger code and data size.
197 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
198 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
200 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
201 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
204 2) iASL Compiler/Disassembler and Tools:
206 Disassembler: Improved pathname support for emitted External()
207 statements. This change adds full pathname support for external names
208 that have been resolved internally by the inclusion of additional ACPI
209 tables (via the iASL -e option). Without this change, the disassembler
210 can emit multiple externals for the same object, or it become confused
211 when the Scope() operator is used on an external object. Overall, greatly
212 improves the ability to actually recompile the emitted ASL code when
213 objects a referenced across multiple ACPI tables. Reported by Michael
214 Tsirkin (mst@redhat.com).
216 Tests/ASLTS: Updated functional control suite to execute with no errors.
217 David Box. Fixed several errors related to the testing of the interpreter
218 slack mode. Lv Zheng.
220 iASL: Added support to detect names that are declared within a control
221 method, but are unused (these are temporary names that are only valid
222 during the time the method is executing). A remark is issued for these
223 cases. ACPICA BZ 1022.
225 iASL: Added full support for the DBG2 table. Adds full disassembler,
226 table compiler, and template generator support for the DBG2 table (Debug
229 iASL: Added full support for the PCCT table, update the table definition.
230 Updates the PCCT table definition in the actbl3.h header and adds table
231 compiler and template generator support.
233 iASL: Added an option to emit only error messages (no warnings/remarks).
234 The -ve option will enable only error messages, warnings and remarks are
235 suppressed. This can simplify debugging when only the errors are
236 important, such as when an ACPI table is disassembled and there are many
237 warnings and remarks -- but only the actual errors are of real interest.
239 Example ACPICA code (source/tools/examples): Updated the example code so
240 that it builds to an actual working program, not just example code. Added
241 ACPI tables and execution of an example control method in the DSDT. Added
242 makefile support for Unix generation.
244 ----------------------------------------
245 15 November 2013. Summary of changes for version 20131115:
247 This release is available at https://acpica.org/downloads
250 1) ACPICA kernel-resident subsystem:
252 Resource Manager: Fixed loop termination for the "get AML length"
253 function. The loop previously had an error termination on a NULL resource
254 pointer, which can never happen since the loop simply increments a valid
255 resource pointer. This fix changes the loop to terminate with an error on
256 an invalid end-of-buffer condition. The problem can be seen as an
257 infinite loop by callers to AcpiSetCurrentResources with an invalid or
258 corrupted resource descriptor, or a resource descriptor that is missing
259 an END_TAG descriptor. Reported by Dan Carpenter
260 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
262 Table unload and ACPICA termination: Delete all attached data objects
263 during namespace node deletion. This fix updates namespace node deletion
264 to delete the entire list of attached objects (attached via
265 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
266 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
268 ACPICA termination: Added support to delete all objects attached to the
269 root namespace node. This fix deletes any and all objects that have been
270 attached to the root node via AcpiAttachData. Previously, none of these
271 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
273 Debug output: Do not emit the function nesting level for the in-kernel
274 build. The nesting level is really only useful during a single-thread
275 execution. Therefore, only enable this output for the AcpiExec utility.
276 Also, only emit the thread ID when executing under AcpiExec (Context
277 switches are still always detected and a message is emitted). ACPICA BZ
280 Example Code and Data Size: These are the sizes for the OS-independent
281 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
282 debug version of the code includes the debug output trace mechanism and
283 has a much larger code and data size.
286 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
287 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
289 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
290 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
293 2) iASL Compiler/Disassembler and Tools:
295 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
296 correct portable POSIX header for terminal control functions.
298 Disassembler: Fixed control method invocation issues related to the use
299 of the CondRefOf() operator. The problem is seen in the disassembly where
300 control method invocations may not be disassembled properly if the
301 control method name has been used previously as an argument to CondRefOf.
302 The solution is to not attempt to emit an external declaration for the
303 CondRefOf target (it is not necessary in the first place). This prevents
304 disassembler object type confusion. ACPICA BZ 988.
306 Unix Makefiles: Added an option to disable compiler optimizations and the
307 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
308 with optimizations (reportedly, gcc 4.4 for example). This change adds a
309 command line option for make (NOOPT) that disables all compiler
310 optimizations and the _FORTIFY_SOURCE compiler flag. The default
311 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
312 1034. Lv Zheng, Bob Moore.
314 Tests/ASLTS: Added options to specify individual test cases and modes.
315 This allows testers running aslts.sh to optionally specify individual
316 test modes and test cases. Also added an option to disable the forced
317 generation of the ACPICA tools from source if desired. Lv Zheng.
319 ----------------------------------------
320 27 September 2013. Summary of changes for version 20130927:
322 This release is available at https://acpica.org/downloads
325 1) ACPICA kernel-resident subsystem:
327 Fixed a problem with store operations to reference objects. This change
328 fixes a problem where a Store operation to an ArgX object that contained
330 reference to a field object did not complete the automatic dereference
332 then write to the actual field object. Instead, the object type of the
333 field object was inadvertently changed to match the type of the source
334 operand. The new behavior will actually write to the field object (buffer
335 field or field unit), thus matching the correct ACPI-defined behavior.
337 Implemented support to allow the host to redefine individual OSL
338 prototypes. This change enables the host to redefine OSL prototypes found
339 in the acpiosxf.h file. This allows the host to implement OSL interfaces
340 with a macro or inlined function. Further, it allows the host to add any
341 additional required modifiers such as __iomem, __init, __exit, etc., as
342 necessary on a per-interface basis. Enables maximum flexibility for the
343 OSL interfaces. Lv Zheng.
345 Hardcoded the access width for the FADT-defined reset register. The ACPI
346 specification requires the reset register width to be 8 bits. ACPICA now
347 hardcodes the width to 8 and ignores the FADT width value. This provides
348 compatibility with other ACPI implementations that have allowed BIOS code
349 with bad register width values to go unnoticed. Matthew Garett, Bob
353 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
355 in the OSL header (acpiosxf). The change modifies the position of this
356 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
357 build issues if the OSL defines the implementation of the interface to be
358 an inline stub function. Lv Zheng.
360 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
361 initialization interfaces. This change adds a new macro for the main init
362 and terminate external interfaces in order to support hosts that require
363 additional or different processing for these functions. Changed from
364 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
367 Cleaned up the memory allocation macros for configurability. In the
369 case, the ACPI_ALLOCATE and related macros now resolve directly to their
370 respective AcpiOs* OSL interfaces. Two options:
371 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
372 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
373 2) For AcpiExec (and for debugging), the macros can optionally be
375 to the local ACPICA interfaces that track each allocation (local tracking
376 is used to immediately detect memory leaks).
379 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
380 to predefine this macro to either TRUE or FALSE during the system build.
382 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
384 Example Code and Data Size: These are the sizes for the OS-independent
385 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
386 debug version of the code includes the debug output trace mechanism and
387 has a much larger code and data size.
390 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
391 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
393 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
394 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
397 2) iASL Compiler/Disassembler and Tools:
399 iASL: Implemented wildcard support for the -e option. This simplifies use
400 when there are many SSDTs that must be included to resolve external
402 declarations. ACPICA BZ 1041. Example:
403 iasl -e ssdt*.dat -d dsdt.dat
405 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
406 adds a portable module that implements full history and limited line
407 editing for Unix and Linux systems. It does not use readline() due to
408 portability issues. Instead it uses the POSIX termio interface to put the
409 terminal in raw input mode so that the various special keys can be
411 (such as up/down-arrow for history support and left/right-arrow for line
412 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
414 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
415 one or more spaces. This provides compatible with early or different
416 versions of the AcpiDump utility. ACPICA BZ 1044.
418 AcpiDump: Do not ignore tables that contain only an ACPI table header.
419 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
420 no other data. This change adds support to dump these tables. Any tables
421 shorter than the length of an ACPI table header remain in error (an error
422 message is emitted). Reported by Yi Li.
424 Debugger: Echo actual command along with the "unknown command" message.
426 ----------------------------------------
427 23 August 2013. Summary of changes for version 20130823:
429 1) ACPICA kernel-resident subsystem:
431 Implemented support for host-installed System Control Interrupt (SCI)
432 handlers. Certain ACPI functionality requires the host to handle raw
433 SCIs. For example, the "SCI Doorbell" that is defined for memory power
434 state support requires the host device driver to handle SCIs to examine
435 if the doorbell has been activated. Multiple SCI handlers can be
436 installed to allow for future expansion. New external interfaces are
437 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
438 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
440 Operation region support: Never locally free the handler "context"
441 pointer. This change removes some dangerous code that attempts to free
442 the handler context pointer in some (rare) circumstances. The owner of
443 the handler owns this pointer and the ACPICA code should never touch it.
444 Although not seen to be an issue in any kernel, it did show up as a
445 problem (fault) under AcpiExec. Also, set the internal storage field for
446 the context pointer to zero when the region is deactivated, simply for
447 sanity. David Box. ACPICA BZ 1039.
449 AcpiRead: On error, do not modify the return value target location. If an
450 error happens in the middle of a split 32/32 64-bit I/O operation, do not
451 modify the target of the return value pointer. Makes the code consistent
452 with the rest of ACPICA. Bjorn Helgaas.
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: 96.7K Code, 27.1K Data, 123.9K Total
461 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
463 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
464 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
467 2) iASL Compiler/Disassembler and Tools:
469 AcpiDump: Implemented several new features and fixed some problems:
470 1) Added support to dump the RSDP, RSDT, and XSDT tables.
471 2) Added support for multiple table instances (SSDT, UEFI).
472 3) Added option to dump "customized" (overridden) tables (-c).
473 4) Fixed a problem where some table filenames were improperly
475 5) Improved some error messages, removed some unnecessary messages.
477 iASL: Implemented additional support for disassembly of ACPI tables that
478 contain invocations of external control methods. The -fe<file> option
479 allows the import of a file that specifies the external methods along
480 with the required number of arguments for each -- allowing for the
481 correct disassembly of the table. This is a workaround for a limitation
482 of AML code where the disassembler often cannot determine the number of
483 arguments required for an external control method and generates incorrect
484 ASL code. See the iASL reference for details. ACPICA BZ 1030.
486 Debugger: Implemented a new command (paths) that displays the full
487 pathnames (namepaths) and object types of all objects in the namespace.
488 This is an alternative to the namespace command.
490 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
491 mechanism and any installed handlers.
493 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
494 This can occur if there are too many parent prefixes in a namepath (for
495 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
497 Application OSLs: Set the return value for the PCI read functions. These
498 functions simply return AE_OK, but should set the return value to zero
499 also. This change implements this. ACPICA BZ 1038.
501 Debugger: Prevent possible command line buffer overflow. Increase the
502 size of a couple of the debugger line buffers, and ensure that overflow
503 cannot happen. ACPICA BZ 1037.
505 iASL: Changed to abort immediately on serious errors during the parsing
506 phase. Due to the nature of ASL, there is no point in attempting to
507 compile these types of errors, and they typically end up causing a
508 cascade of hundreds of errors which obscure the original problem.
510 ----------------------------------------
511 25 July 2013. Summary of changes for version 20130725:
513 1) ACPICA kernel-resident subsystem:
515 Fixed a problem with the DerefOf operator where references to FieldUnits
516 and BufferFields incorrectly returned the parent object, not the actual
517 value of the object. After this change, a dereference of a FieldUnit
518 reference results in a read operation on the field to get the value, and
519 likewise, the appropriate BufferField value is extracted from the target
522 Fixed a problem where the _WAK method could cause a fault under these
523 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
524 method returned no value. The problem is rarely seen because most kernels
525 run ACPICA in slack mode.
527 For the DerefOf operator, a fatal error now results if an attempt is made
528 to dereference a reference (created by the Index operator) to a NULL
529 package element. Provides compatibility with other ACPI implementations,
530 and this behavior will be added to a future version of the ACPI
533 The ACPI Power Management Timer (defined in the FADT) is now optional.
534 This provides compatibility with other ACPI implementations and will
535 appear in the next version of the ACPI specification. If there is no PM
536 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
537 zero in the FADT indicates no PM timer.
539 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
540 allows the host to globally enable/disable all vendor strings, all
541 feature strings, or both. Intended to be primarily used for debugging
542 purposes only. Lv Zheng.
544 Expose the collected _OSI data to the host via a global variable. This
545 data tracks the highest level vendor ID that has been invoked by the BIOS
546 so that the host (and potentially ACPICA itself) can change behaviors
547 based upon the age of the BIOS.
549 Example Code and Data Size: These are the sizes for the OS-independent
550 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
551 debug version of the code includes the debug output trace mechanism and
552 has a much larger code and data size.
555 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
556 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
558 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
559 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
562 2) iASL Compiler/Disassembler and Tools:
564 iASL: Created the following enhancements for the -so option (create
566 1)Add offsets for the last nameseg in each namepath for every supported
568 2)Add support for Processor, Device, Thermal Zone, and Scope objects
569 3)Add the actual AML opcode for the parent object of every supported
571 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
573 Disassembler: Emit all unresolved external symbols in a single block.
574 These are external references to control methods that could not be
575 resolved, and thus, the disassembler had to make a guess at the number of
578 iASL: The argument to the -T option (create table template) is now
579 optional. If not specified, the default table is a DSDT, typically the
582 ----------------------------------------
583 26 June 2013. Summary of changes for version 20130626:
585 1) ACPICA kernel-resident subsystem:
587 Fixed an issue with runtime repair of the _CST object. Null or invalid
588 elements were not always removed properly. Lv Zheng.
590 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
591 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
592 the maximum number of GPEs is 1016. Use of multiple GPE block devices
593 makes the system-wide number of GPEs essentially unlimited.
595 Example Code and Data Size: These are the sizes for the OS-independent
596 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
597 debug version of the code includes the debug output trace mechanism and
598 has a much larger code and data size.
601 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
602 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
604 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
605 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
608 2) iASL Compiler/Disassembler and Tools:
610 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
611 hosts. Now supports Linux, FreeBSD, and Windows.
613 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
614 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
616 iASL/Preprocessor: Implemented full support for nested
617 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
619 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
620 max. The original purpose of this constraint was to limit the amount of
621 debug output. However, the string function in question (UtPrintString) is
622 now used for the disassembler also, where 256 bytes is insufficient.
623 Reported by RehabMan@GitHub.
625 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
626 tables. ACPICA BZ 999. Lv Zheng.
628 iASL: Fixed a couple of error exit issues that could result in a "Could
629 not delete <file>" message during ASL compilation.
631 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
632 the actual signatures for these tables are "FACP" and "APIC",
635 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
636 tables are allowed to have multiple instances.
638 ----------------------------------------
639 17 May 2013. Summary of changes for version 20130517:
641 1) ACPICA kernel-resident subsystem:
643 Fixed a regression introduced in version 20130328 for _INI methods. This
644 change fixes a problem introduced in 20130328 where _INI methods are no
645 longer executed properly because of a memory block that was not
646 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
647 <tomasz.nowicki@linaro.org>.
649 Fixed a possible problem with the new extended sleep registers in the
651 5.0 FADT. Do not use these registers (even if populated) unless the HW-
652 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
655 Implemented return value repair code for _CST predefined objects: Sort
657 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
659 Implemented a debug-only option to disable loading of SSDTs from the
660 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
661 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
662 acglobal.h - ACPICA BZ 1005. Lv Zheng.
664 Fixed some issues in the ACPICA initialization and termination code:
665 Tomasz Nowicki <tomasz.nowicki@linaro.org>
666 1) Clear events initialized flag upon event component termination. ACPICA
668 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
669 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
670 4) Clear debug buffer global on termination to prevent possible multiple
671 delete. ACPICA BZ 1010.
673 Standardized all switch() blocks across the entire source base. After
675 years, different formatting for switch() had crept in. This change makes
676 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
678 Split some files to enhance ACPICA modularity and configurability:
679 1) Split buffer dump routines into utilities/utbuffer.c
680 2) Split internal error message routines into utilities/uterror.c
681 3) Split table print utilities into tables/tbprint.c
682 4) Split iASL command-line option processing into asloptions.c
684 Makefile enhancements:
685 1) Support for all new files above.
686 2) Abort make on errors from any subcomponent. Chao Guan.
687 3) Add build support for Apple Mac OS X. Liang Qi.
689 Example Code and Data Size: These are the sizes for the OS-independent
690 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
691 debug version of the code includes the debug output trace mechanism and
692 has a much larger code and data size.
695 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
696 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
698 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
699 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
702 2) iASL Compiler/Disassembler and Tools:
704 New utility: Implemented an easily portable version of the acpidump
705 utility to extract ACPI tables from the system (or a file) in an ASCII
707 dump format. The top-level code implements the various command line
708 options, file I/O, and table dump routines. To port to a new host, only
709 three functions need to be implemented to get tables -- since this
710 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
711 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
712 1) The Windows version obtains the ACPI tables from the Registry.
713 2) The Linux version is under development.
714 3) Other hosts - If an OS-dependent module is submitted, it will be
715 distributed with ACPICA.
717 iASL: Fixed a regression for -D preprocessor option (define symbol). A
718 restructuring/change to the initialization sequence caused this option to
719 no longer work properly.
721 iASL: Implemented a mechanism to disable specific warnings and remarks.
722 Adds a new command line option, "-vw <messageid> as well as "#pragma
723 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
725 iASL: Fix for too-strict package object validation. The package object
726 validation for return values from the predefined names is a bit too
727 strict, it does not allow names references within the package (which will
728 be resolved at runtime.) These types of references cannot be validated at
729 compile time. This change ignores named references within package objects
730 for names that return or define static packages.
732 Debugger: Fixed the 80-character command line limitation for the History
733 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
735 iASL: Added control method and package support for the -so option
736 (generates AML offset table for BIOS support.)
738 iASL: issue a remark if a non-serialized method creates named objects. If
739 a thread blocks within the method for any reason, and another thread
740 enters the method, the method will fail because an attempt will be made
742 create the same (named) object twice. In this case, issue a remark that
743 the method should be marked serialized. NOTE: may become a warning later.
746 ----------------------------------------
747 18 April 2013. Summary of changes for version 20130418:
749 1) ACPICA kernel-resident subsystem:
751 Fixed a possible buffer overrun during some rare but specific field unit
752 read operations. This overrun can only happen if the DSDT version is 1 --
753 meaning that all AML integers are 32 bits -- and the field length is
754 between 33 and 55 bits long. During the read, an internal buffer object
756 created for the field unit because the field is larger than an integer
758 bits). However, in this case, the buffer will be incorrectly written
759 beyond the end because the buffer length is less than the internal
761 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
762 long, but a full 8 bytes will be written.
764 Updated the Embedded Controller "orphan" _REG method support. This refers
765 to _REG methods under the EC device that have no corresponding operation
766 region. This is allowed by the ACPI specification. This update removes a
767 dependency on the existence an ECDT table. It will execute an orphan _REG
768 method as long as the operation region handler for the EC is installed at
769 the EC device node and not the namespace root. Rui Zhang (original
770 update), Bob Moore (update/integrate).
772 Implemented run-time argument typechecking for all predefined ACPI names
773 (_STA, _BIF, etc.) This change performs object typechecking on all
774 incoming arguments for all predefined names executed via
775 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
776 passing correct object types as well as the correct number of arguments
777 (therefore identifying any issues immediately). Also, the ASL/namespace
778 definition of the predefined name is checked against the ACPI
779 specification for the proper argument count. Adds one new file,
782 Changed an exception code for the ASL UnLoad() operator. Changed the
783 exception code for the case where the input DdbHandle is invalid, from
784 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
786 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
787 global makefile. The use of this flag causes compiler errors on earlier
788 versions of GCC, so it has been removed for compatibility.
790 Miscellaneous cleanup:
791 1) Removed some unused/obsolete macros
792 2) Fixed a possible memory leak in the _OSI support
793 3) Removed an unused variable in the predefined name support
794 4) Windows OSL: remove obsolete reference to a memory list field
796 Example Code and Data Size: These are the sizes for the OS-independent
797 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
798 debug version of the code includes the debug output trace mechanism and
799 has a much larger code and data size.
802 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
803 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
805 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
806 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
809 2) iASL Compiler/Disassembler and Tools:
811 AcpiExec: Added installation of a handler for the SystemCMOS address
812 space. This prevents control method abort if a method accesses this
815 AcpiExec: Added support for multiple EC devices, and now install EC
816 operation region handler(s) at the actual EC device instead of the
817 namespace root. This reflects the typical behavior of host operating
820 AcpiExec: Updated to ensure that all operation region handlers are
821 installed before the _REG methods are executed. This prevents a _REG
822 method from aborting if it accesses an address space has no handler.
823 AcpiExec installs a handler for every possible address space.
825 Debugger: Enhanced the "handlers" command to display non-root handlers.
826 This change enhances the handlers command to display handlers associated
827 with individual devices throughout the namespace, in addition to the
828 currently supported display of handlers associated with the root
832 ASL Test Suite: Several test suite errors have been identified and
833 resolved, reducing the total error count during execution. Chao Guan.
835 ----------------------------------------
836 28 March 2013. Summary of changes for version 20130328:
838 1) ACPICA kernel-resident subsystem:
840 Fixed several possible race conditions with the internal object reference
841 counting mechanism. Some of the external ACPICA interfaces update object
842 reference counts without holding the interpreter or namespace lock. This
843 change adds a spinlock to protect reference count updates on the internal
844 ACPICA objects. Reported by and with assistance from Andriy Gapon
847 FADT support: Removed an extraneous warning for very large GPE register
848 sets. This change removes a size mismatch warning if the legacy length
849 field for a GPE register set is larger than the 64-bit GAS structure can
850 accommodate. GPE register sets can be larger than the 255-bit width
851 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
853 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
854 return from this interface. Handles a possible timeout case if
855 ACPI_WAIT_FOREVER is modified by the host to be a value less than
856 "forever". Jung-uk Kim.
858 Predefined name support: Add allowed/required argument type information
860 the master predefined info table. This change adds the infrastructure to
861 enable typechecking on incoming arguments for all predefined
862 methods/objects. It does not actually contain the code that will fully
863 utilize this information, this is still under development. Also condenses
864 some duplicate code for the predefined names into a new module,
867 Example Code and Data Size: These are the sizes for the OS-independent
868 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
869 debug version of the code includes the debug output trace mechanism and
870 has a much larger code and data size.
873 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
874 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
876 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
877 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
880 2) iASL Compiler/Disassembler and Tools:
882 iASL: Implemented a new option to simplify the development of ACPI-
884 BIOS code. Adds support for a new "offset table" output file. The -so
885 option will create a C table containing the AML table offsets of various
886 named objects in the namespace so that BIOS code can modify them easily
888 boot time. This can simplify BIOS runtime code by eliminating expensive
889 searches for "magic values", enhancing boot times and adding greater
890 reliability. With assistance from Lee Hamel.
892 iASL: Allow additional predefined names to return zero-length packages.
893 Now, all predefined names that are defined by the ACPI specification to
894 return a "variable-length package of packages" are allowed to return a
895 zero length top-level package. This allows the BIOS to tell the host that
896 the requested feature is not supported, and supports existing BIOS/ASL
899 iASL: Changed the "result not used" warning to an error. This is the case
900 where an ASL operator is effectively a NOOP because the result of the
901 operation is not stored anywhere. For example:
903 There is no target (missing 3rd argument), nor is the function return
904 value used. This is potentially a very serious problem -- since the code
905 was probably intended to do something, but for whatever reason, the value
906 was not stored. Therefore, this issue has been upgraded from a warning to
909 AcpiHelp: Added allowable/required argument types to the predefined names
910 info display. This feature utilizes the recent update to the predefined
913 ----------------------------------------
914 14 February 2013. Summary of changes for version 20130214:
916 1) ACPICA Kernel-resident Subsystem:
918 Fixed a possible regression on some hosts: Reinstated the safe return
919 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
920 evaluated only once. Although these macros are not needed for the ACPICA
921 code itself, they are often used by ACPI-related host device drivers
923 the safe feature may be necessary.
925 Fixed several issues related to the ACPI 5.0 reduced hardware support
926 (SOC): Now ensure that if the platform declares itself as hardware-
928 via the FADT, the following functions become NOOPs (and always return
929 AE_OK) because ACPI is always enabled by definition on these machines:
935 Dynamic Object Repair: Implemented additional runtime repairs for
936 predefined name return values. Both of these repairs can simplify code in
937 the related device drivers that invoke these methods:
938 1) For the _STR and _MLS names, automatically repair/convert an ASCII
939 string to a Unicode buffer.
940 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
942 lone end tag descriptor in the following cases: A Return(0) was executed,
943 a null buffer was returned, or no object at all was returned (non-slack
944 mode only). Adds a new file, nsconvert.c
945 ACPICA BZ 998. Bob Moore, Lv Zheng.
947 Resource Manager: Added additional code to prevent possible infinite
949 while traversing corrupted or ill-formed resource template buffers. Check
950 for zero-length resource descriptors in all code that loops through
951 resource templates (the length field is used to index through the
952 template). This change also hardens the external AcpiWalkResources and
953 AcpiWalkResourceBuffer interfaces.
955 Local Cache Manager: Enhanced the main data structure to eliminate an
956 unnecessary mechanism to access the next object in the list. Actually
957 provides a small performance enhancement for hosts that use the local
958 ACPICA cache manager. Jung-uk Kim.
960 Example Code and Data Size: These are the sizes for the OS-independent
961 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
962 debug version of the code includes the debug output trace mechanism and
963 has a much larger code and data size.
966 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
967 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
969 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
970 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
973 2) iASL Compiler/Disassembler and Tools:
975 iASL/Disassembler: Fixed several issues with the definition of the ACPI
976 5.0 RASF table (RAS Feature Table). This change incorporates late changes
977 that were made to the ACPI 5.0 specification.
979 iASL/Disassembler: Added full support for the following new ACPI tables:
980 1) The MTMR table (MID Timer Table)
981 2) The VRTC table (Virtual Real Time Clock Table).
982 Includes header file, disassembler, table compiler, and template support
985 iASL: Implemented compile-time validation of package objects returned by
986 predefined names. This new feature validates static package objects
987 returned by the various predefined names defined to return packages. Both
988 object types and package lengths are validated, for both parent packages
989 and sub-packages, if any. The code is similar in structure and behavior
991 the runtime repair mechanism within the AML interpreter and uses the
992 existing predefined name information table. Adds a new file, aslprepkg.c.
995 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
996 This feature detects a binary file with a valid ACPI table header and
997 invokes the disassembler automatically. Eliminates the need to
998 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1000 iASL/Disassembler: Added several warnings for the case where there are
1001 unresolved control methods during the disassembly. This can potentially
1002 cause errors when the output file is compiled, because the disassembler
1003 assumes zero method arguments in these cases (it cannot determine the
1004 actual number of arguments without resolution/definition of the method).
1006 Debugger: Added support to display all resources with a single command.
1007 Invocation of the resources command with no arguments will now display
1009 resources within the current namespace.
1011 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1014 ----------------------------------------
1015 17 January 2013. Summary of changes for version 20130117:
1017 1) ACPICA Kernel-resident Subsystem:
1019 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1020 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1021 objects to return a package containing one integer, most BIOS code
1023 two integers and the previous code reflects that. However, we also need
1025 support BIOS code that actually implements to the ACPI spec, and this
1026 change reflects this.
1028 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1029 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1030 C compilers that require this support.
1031 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1032 ACPI_DEBUG is already used by many of the various hosts.
1034 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1035 copyright to all module headers and signons, including the standard Linux
1036 header. This affects virtually every file in the ACPICA core subsystem,
1037 iASL compiler, all ACPICA utilities, and the test suites.
1039 Example Code and Data Size: These are the sizes for the OS-independent
1040 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1041 debug version of the code includes the debug output trace mechanism and
1042 has a much larger code and data size.
1045 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1046 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1048 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1049 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1052 2) iASL Compiler/Disassembler and Tools:
1054 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1055 prevent a possible fault on some hosts. Some C libraries modify the arg
1056 pointer parameter to vfprintf making it difficult to call it twice in the
1057 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1058 does not affect the Windows OSL since the Win C library does not modify
1059 the arg pointer. Chao Guan, Bob Moore.
1061 iASL: Fixed a possible infinite loop when the maximum error count is
1062 reached. If an output file other than the .AML file is specified (such as
1063 a listing file), and the maximum number of errors is reached, do not
1064 attempt to flush data to the output file(s) as the compiler is aborting.
1065 This can cause an infinite loop as the max error count code essentially
1066 keeps calling itself.
1068 iASL/Disassembler: Added an option (-in) to ignore NOOP
1070 Implemented for both the compiler and the disassembler. Often, the NOOP
1071 opcode is used as padding for packages that are changed dynamically by
1073 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1074 errors. This option causes the disassembler to ignore all NOOP opcodes
1075 (0xA3), and it also causes the compiler to ignore all ASL source code
1079 Debugger: Enhanced the Sleep command to execute all sleep states. This
1080 change allows Sleep to be invoked with no arguments and causes the
1081 debugger to execute all of the sleep states, 0-5, automatically.
1083 ----------------------------------------
1084 20 December 2012. Summary of changes for version 20121220:
1086 1) ACPICA Kernel-resident Subsystem:
1088 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1089 alternate entry point for AcpiWalkResources and improves the usability of
1090 the resource manager by accepting as input a buffer containing the output
1091 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1092 input buffer is not deleted by this interface so that it can be used by
1093 the host later. See the ACPICA reference for details.
1095 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1096 (DSDT version < 2). The constant will be truncated and this warning
1097 reflects that behavior.
1099 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1100 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1101 both get and set the new wake bit in these descriptors, separately from
1102 the existing share bit. Reported by Aaron Lu.
1104 Interpreter: Fix Store() when an implicit conversion is not possible. For
1105 example, in the cases such as a store of a string to an existing package
1106 object, implement the store as a CopyObject(). This is a small departure
1107 from the ACPI specification which states that the control method should
1109 aborted in this case. However, the ASLTS suite depends on this behavior.
1111 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1112 macros: check if debug output is currently enabled as soon as possible to
1113 minimize performance impact if debug is in fact not enabled.
1115 Source code restructuring: Cleanup to improve modularity. The following
1116 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1117 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1118 Associated makefiles and project files have been updated.
1120 Changed an exception code for LoadTable operator. For the case where one
1121 of the input strings is too long, change the returned exception code from
1122 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1124 Fixed a possible memory leak in dispatcher error path. On error, delete
1125 the mutex object created during method mutex creation. Reported by
1126 tim.gardner@canonical.com.
1128 Example Code and Data Size: These are the sizes for the OS-independent
1129 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1130 debug version of the code includes the debug output trace mechanism and
1131 has a much larger code and data size.
1134 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1135 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1137 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1138 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1141 2) iASL Compiler/Disassembler and Tools:
1143 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1144 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1145 will not allow the interpreter to differentiate between a method and a
1146 method invocation when these are used as an argument to the ObjectType
1147 operator. The ACPI specification change is to disallow a method
1149 (UserTerm) for the ObjectType operator.
1151 Finish support for the TPM2 and CSRT tables in the headers, table
1152 compiler, and disassembler.
1154 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1155 always expires immediately if the semaphore is not available. The
1157 code was using a relative-time timeout, but sem_timedwait requires the
1159 of an absolute time.
1161 iASL: Added a remark if the Timer() operator is used within a 32-bit
1162 table. This operator returns a 64-bit time value that will be truncated
1163 within a 32-bit table.
1165 iASL Source code restructuring: Cleanup to improve modularity. The
1166 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1167 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1171 ----------------------------------------
1172 14 November 2012. Summary of changes for version 20121114:
1174 1) ACPICA Kernel-resident Subsystem:
1176 Implemented a performance enhancement for ACPI/AML Package objects. This
1177 change greatly increases the performance of Package objects within the
1178 interpreter. It changes the processing of reference counts for packages
1180 optimizing for the most common case where the package sub-objects are
1181 either Integers, Strings, or Buffers. Increases the overall performance
1183 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1185 Chao Guan. ACPICA BZ 943.
1187 Implemented and deployed common macros to extract flag bits from resource
1188 descriptors. Improves readability and maintainability of the code. Fixes
1190 problem with the UART serial bus descriptor for the number of data bits
1191 flags (was incorrectly 2 bits, should be 3).
1193 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1194 of the macros and changed the SETx macros to the style of (destination,
1195 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1197 Example Code and Data Size: These are the sizes for the OS-independent
1198 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1199 debug version of the code includes the debug output trace mechanism and
1200 has a much larger code and data size.
1203 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1204 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1206 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1207 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1210 2) iASL Compiler/Disassembler and Tools:
1212 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1213 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1214 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1216 Disassembler: Fixed a problem with external declaration generation. Fixes
1217 a problem where an incorrect pathname could be generated for an external
1218 declaration if the original reference to the object includes leading
1219 carats (^). ACPICA BZ 984.
1221 Debugger: Completed a major update for the Disassemble<method> command.
1222 This command was out-of-date and did not properly disassemble control
1223 methods that had any reasonable complexity. This fix brings the command
1225 to the same level as the rest of the disassembler. Adds one new file,
1226 dmdeferred.c, which is existing code that is now common with the main
1227 disassembler and the debugger disassemble command. ACPICA MZ 978.
1229 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1230 Newer versions of Bison emit this prototype, so moved the prototype out
1232 the iASL header to where it is actually used in order to avoid a
1236 iASL/Tools: Standardized use of the stream I/O functions:
1237 1) Ensure check for I/O error after every fopen/fread/fwrite
1238 2) Ensure proper order of size/count arguments for fread/fwrite
1239 3) Use test of (Actual != Requested) after all fwrite, and most fread
1240 4) Standardize I/O error messages
1241 Improves reliability and maintainability of the code. Bob Moore, Lv
1245 Disassembler: Prevent duplicate External() statements. During generation
1246 of external statements, detect similar pathnames that are actually
1247 duplicates such as these:
1250 Remove all leading '\' characters from pathnames during the external
1251 statement generation so that duplicates will be detected and tossed.
1254 Tools: Replace low-level I/O with stream I/O functions. Replace
1255 open/read/write/close with the stream I/O equivalents
1256 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1259 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1260 name header so that AcpiXtract recognizes the output file/table.
1262 iASL: Remove obsolete -2 option flag. Originally intended to force the
1263 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1264 and the entire concept is now obsolete.
1266 ----------------------------------------
1267 18 October 2012. Summary of changes for version 20121018:
1270 1) ACPICA Kernel-resident Subsystem:
1272 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1273 introduced by late changes to the table as it was added to the ACPI 5.0
1274 specification. Includes header, disassembler, and data table compiler
1275 support as well as a new version of the MPST template.
1277 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1278 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1279 methods: _HID, _CID, and _UID.
1281 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1282 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1283 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1284 names for their various drivers. Affects the AcpiGetObjectInfo external
1285 interface, and other internal interfaces as well.
1287 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1288 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
1289 on machines that support non-aligned transfers. Optimizes for this case
1290 rather than using a strncpy. With assistance from Zheng Lv.
1292 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
1293 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
1295 Added a new debug print message for AML mutex objects that are force-
1296 released. At control method termination, any currently acquired mutex
1297 objects are force-released. Adds a new debug-only message for each one
1300 Audited/updated all ACPICA return macros and the function debug depth
1301 counter: 1) Ensure that all functions that use the various TRACE macros
1302 also use the appropriate ACPICA return macros. 2) Ensure that all normal
1303 return statements surround the return expression (value) with parens to
1304 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
1305 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
1307 Global source code changes/maintenance: All extra lines at the start and
1308 end of each source file have been removed for consistency. Also, within
1309 comments, all new sentences start with a single space instead of a double
1310 space, again for consistency across the code base.
1312 Example Code and Data Size: These are the sizes for the OS-independent
1313 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1314 debug version of the code includes the debug output trace mechanism and
1315 has a much larger code and data size.
1318 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1319 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1321 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1322 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1325 2) iASL Compiler/Disassembler and Tools:
1327 AcpiExec: Improved the algorithm used for memory leak/corruption
1328 detection. Added some intelligence to the code that maintains the global
1329 list of allocated memory. The list is now ordered by allocated memory
1330 address, significantly improving performance. When running AcpiExec on
1331 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
1332 on the platform and/or the environment. Note, this performance
1333 enhancement affects the AcpiExec utility only, not the kernel-resident
1336 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
1337 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
1338 incorrect table offset reported for invalid opcodes. Report the original
1339 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
1341 Disassembler: Enhanced the -vt option to emit the binary table data in
1342 hex format to assist with debugging.
1344 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
1345 size of file structure. Colin Ian King.
1347 ----------------------------------------
1348 13 September 2012. Summary of changes for version 20120913:
1351 1) ACPICA Kernel-resident Subsystem:
1353 ACPI 5.0: Added two new notify types for the Hardware Error Notification
1354 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
1358 Table Manager: Merged/removed duplicate code in the root table resize
1359 functions. One function is external, the other is internal. Lv Zheng,
1363 Makefiles: Completely removed the obsolete "Linux" makefiles under
1364 acpica/generate/linux. These makefiles are obsolete and have been
1367 the generic unix makefiles under acpica/generate/unix.
1369 Makefiles: Ensure that binary files always copied properly. Minor rule
1371 to ensure that the final binary output files are always copied up to the
1372 appropriate binary directory (bin32 or bin64.)
1374 Example Code and Data Size: These are the sizes for the OS-independent
1375 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1377 version of the code includes the debug output trace mechanism and has a
1379 larger code and data size.
1382 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1383 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1385 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1386 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1389 2) iASL Compiler/Disassembler and Tools:
1391 Disassembler: Fixed a possible fault during the disassembly of resource
1392 descriptors when a second parse is required because of the invocation of
1393 external control methods within the table. With assistance from
1394 adq@lidskialf.net. ACPICA BZ 976.
1396 iASL: Fixed a namepath optimization problem. An error can occur if the
1398 node that contains the namepath to be optimized does not have a parent
1400 that is a named object. This change fixes the problem.
1402 iASL: Fixed a regression where the AML file is not deleted on errors. The
1404 output file should be deleted if there are any errors during the
1407 only exception is if the -f (force output) option is used. ACPICA BZ 974.
1409 iASL: Added a feature to automatically increase internal line buffer
1411 Via realloc(), automatically increase the internal line buffer sizes as
1412 necessary to support very long source code lines. The current version of
1414 preprocessor requires a buffer long enough to contain full source code
1416 This change increases the line buffer(s) if the input lines go beyond the
1417 current buffer size. This eliminates errors that occurred when a source
1419 line was longer than the buffer.
1421 iASL: Fixed a problem with constant folding in method declarations. The
1422 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
1424 Type3 opcode was used.
1426 Debugger: Improved command help support. For incorrect argument count,
1428 full help for the command. For help command itself, allow an argument to
1431 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
1432 errors during execution of the suite. Guan Chao.
1434 ----------------------------------------
1435 16 August 2012. Summary of changes for version 20120816:
1438 1) ACPICA Kernel-resident Subsystem:
1440 Removed all use of the deprecated _GTS and _BFS predefined methods. The
1442 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
1443 deprecated and will probably be removed from the ACPI specification.
1445 does not invoke them, and reportedly never will. The final nail in the
1447 is that the ACPI specification states that these methods must be run with
1448 interrupts off, which is not going to happen in a kernel interpreter.
1450 Linux has removed all use of the methods also. It was discovered that
1451 invoking these functions caused failures on some machines, probably
1453 they were never tested since Windows does not call them. Affects two
1455 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
1458 Implemented support for complex bit-packed buffers returned from the _PLD
1459 (Physical Location of Device) predefined method. Adds a new external
1460 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
1462 structure. Note: C Bitfields cannot be used for this type of predefined
1463 structure since the memory layout of individual bitfields is not defined
1465 the C language. In addition, there are endian concerns where a compiler
1467 change the bitfield ordering based on the machine type. The new ACPICA
1468 interface eliminates these issues, and should be called after _PLD is
1469 executed. ACPICA BZ 954.
1471 Implemented a change to allow a scope change to root (via "Scope (\)")
1473 execution of module-level ASL code (code that is executed at table load
1476 Added the Windows8/Server2012 string for the _OSI method. This change
1479 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
1482 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
1484 and CSRT (Core System Resource Table).
1486 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
1487 names. This simplifies access to the buffers returned by these predefined
1488 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
1490 GPE support: Removed an extraneous parameter from the various low-level
1491 internal GPE functions. Tang Feng.
1493 Removed the linux makefiles from the unix packages. The generate/linux
1494 makefiles are obsolete and have been removed from the unix tarball
1496 packages. The replacement makefiles are under generate/unix, and there is
1498 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
1500 Updates for Unix makefiles:
1501 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
1502 2) Update linker flags (move to end of command line) for AcpiExec
1506 Split ACPICA initialization functions to new file, utxfinit.c. Split from
1507 utxface.c to improve modularity and reduce file size.
1509 Example Code and Data Size: These are the sizes for the OS-independent
1510 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1511 debug version of the code includes the debug output trace mechanism and
1513 much larger code and data size.
1516 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1517 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1519 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1520 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1523 2) iASL Compiler/Disassembler and Tools:
1525 iASL: Fixed a problem with constant folding for fixed-length constant
1526 expressions. The constant-folding code was not being invoked for constant
1527 expressions that allow the use of type 3/4/5 opcodes to generate
1529 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
1531 in the generation of invalid AML bytecode. ACPICA BZ 970.
1533 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
1534 apparently automatically emit some of the necessary externals. This
1536 handles these versions in order to eliminate generation warnings.
1538 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
1540 Disassembler: Add support to decode _PLD buffers. The decoded buffer
1542 within comments in the output file.
1544 Debugger: Fixed a regression with the "Threads" command where
1545 AE_BAD_PARAMETER was always returned.
1547 ----------------------------------------
1548 11 July 2012. Summary of changes for version 20120711:
1550 1) ACPICA Kernel-resident Subsystem:
1552 Fixed a possible fault in the return package object repair code. Fixes a
1553 problem that can occur when a lone package object is wrapped with an
1555 package object in order to force conformance to the ACPI specification.
1557 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
1561 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
1562 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
1563 ARB_DIS bit must be implemented in the host-dependent C3 processor power
1565 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
1567 Intel and other vendors. (for Intel: ICH4-M and earlier)
1569 This change removes the code to disable/enable bus master arbitration
1571 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
1573 resume problems on some machines. The change has been in use for over
1577 Implemented two new external interfaces to support host-directed dynamic
1579 table load and unload. They are intended to simplify the host
1581 of hot-plug support:
1582 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
1583 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
1585 See the ACPICA reference for additional details. Adds one new file,
1586 components/tables/tbxfload.c
1588 Implemented and deployed two new interfaces for errors and warnings that
1590 known to be caused by BIOS/firmware issues:
1591 AcpiBiosError: Prints "ACPI Firmware Error" message.
1592 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
1593 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
1595 and FADT errors. Additional deployment to be completed as appropriate in
1597 future. The associated conditional macros are ACPI_BIOS_ERROR and
1598 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
1603 Implicit notify support: ensure that no memory allocation occurs within a
1604 critical region. This fix moves a memory allocation outside of the time
1606 spinlock is held. Fixes issues on systems that do not allow this
1610 Split exception code utilities and tables into a new file,
1613 Example Code and Data Size: These are the sizes for the OS-independent
1614 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1616 version of the code includes the debug output trace mechanism and has a
1618 larger code and data size.
1621 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1622 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1624 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1625 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1628 2) iASL Compiler/Disassembler and Tools:
1630 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
1634 Debugger: Enhanced the "tables" command to emit additional information
1636 the current set of ACPI tables, including the owner ID and flags decode.
1638 Debugger: Reimplemented the "unload" command to use the new
1639 AcpiUnloadParentTable external interface. This command was disable
1641 due to need for an unload interface.
1643 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
1645 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
1647 ----------------------------------------
1648 20 June 2012. Summary of changes for version 20120620:
1651 1) ACPICA Kernel-resident Subsystem:
1653 Implemented support to expand the "implicit notify" feature to allow
1655 devices to be notified by a single GPE. This feature automatically
1657 runtime device notification in the absence of a BIOS-provided GPE control
1658 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
1660 provided by ACPICA for Windows compatibility, and is a workaround for
1663 code errors. See the description of the AcpiSetupGpeForWake interface in
1665 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
1667 Changed some comments and internal function names to simplify and ensure
1668 correctness of the Linux code translation. No functional changes.
1670 Example Code and Data Size: These are the sizes for the OS-independent
1671 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1673 version of the code includes the debug output trace mechanism and has a
1675 larger code and data size.
1678 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1679 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1681 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1682 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1685 2) iASL Compiler/Disassembler and Tools:
1687 Disassembler: Added support to emit short, commented descriptions for the
1689 predefined names in order to improve the readability of the disassembled
1690 output. ACPICA BZ 959. Changes include:
1691 1) Emit descriptions for all standard predefined names (_INI, _STA,
1694 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
1695 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
1698 AcpiSrc: Fixed several long-standing Linux code translation issues.
1700 descriptions in function headers are now translated properly to lower
1703 underscores. ACPICA BZ 961. Also fixes translation problems such as
1709 local_fADT -> local_FADT
1710 execute_oSI -> execute_OSI
1712 iASL: Fixed a problem where null bytes were inadvertently emitted into
1716 iASL: Added the existing debug options to the standard help screen. There
1718 no longer two different help screens. ACPICA BZ 957.
1720 AcpiHelp: Fixed some typos in the various predefined name descriptions.
1722 expand some of the descriptions where appropriate.
1724 iASL: Fixed the -ot option (display compile times/statistics). Was not
1726 properly for standard output; only worked for the debug file case.
1728 ----------------------------------------
1729 18 May 2012. Summary of changes for version 20120518:
1732 1) ACPICA Core Subsystem:
1734 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
1736 to block until asynchronous events such as notifies and GPEs have
1738 Within ACPICA, it is only called before a notify or GPE handler is
1739 removed/uninstalled. It also may be useful for the host OS within related
1740 drivers such as the Embedded Controller driver. See the ACPICA reference
1742 additional information. ACPICA BZ 868.
1744 ACPI Tables: Added a new error message for a possible overflow failure
1746 the conversion of FADT 32-bit legacy register addresses to internal
1749 bit GAS structure representation. The GAS has a one-byte "bit length"
1751 thus limiting the register length to 255 bits. ACPICA BZ 953.
1753 Example Code and Data Size: These are the sizes for the OS-independent
1754 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1756 version of the code includes the debug output trace mechanism and has a
1758 larger code and data size.
1761 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1762 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1764 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1765 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1768 2) iASL Compiler/Disassembler and Tools:
1770 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
1772 This keyword was added late in the ACPI 5.0 release cycle and was not
1773 implemented until now.
1775 Disassembler: Added support for Operation Region externals. Adds missing
1776 support for operation regions that are defined in another table, and
1777 referenced locally via a Field or BankField ASL operator. Now generates
1779 correct External statement.
1781 Disassembler: Several additional fixes for the External() statement
1783 related to some ASL operators. Also, order the External() statements
1784 alphabetically in the disassembler output. Fixes the External()
1787 the Create* field, Alias, and Scope operators:
1788 1) Create* buffer field operators - fix type mismatch warning on
1790 2) Alias - implement missing External support
1791 3) Scope - fix to make sure all necessary externals are emitted.
1793 iASL: Improved pathname support. For include files, merge the prefix
1795 with the file pathname and eliminate unnecessary components. Convert
1796 backslashes in all pathnames to forward slashes, for readability. Include
1798 pathname changes affect both #include and Include() type operators.
1800 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
1802 of a valid line by inserting a newline and then returning the EOF during
1804 next call to GetNextLine. Prevents the line from being ignored due to EOF
1807 iASL: Implemented some changes to enhance the IDE support (-vi option.)
1809 and Warning messages are now correctly recognized for both the source
1811 browser and the global error and warning counts.
1813 ----------------------------------------
1814 20 April 2012. Summary of changes for version 20120420:
1817 1) ACPICA Core Subsystem:
1819 Implemented support for multiple notify handlers. This change adds
1822 allow multiple system and device notify handlers on Device, Thermal Zone,
1824 Processor objects. This can simplify the host OS notification
1826 Also re-worked and restructured the entire notify support code to
1828 handler installation, handler removal, notify event queuing, and notify
1829 dispatch to handler(s). Note: there can still only be two global notify
1830 handlers - one for system notifies and one for device notifies. There are
1832 changes to the existing handler install/remove interfaces. Lin Ming, Bob
1833 Moore, Rafael Wysocki.
1835 Fixed a regression in the package repair code where the object reference
1836 count was calculated incorrectly. Regression was introduced in the commit
1837 "Support to add Package wrappers".
1839 Fixed a couple possible memory leaks in the AML parser, in the error
1841 path. Jesper Juhl, Lin Ming.
1843 Example Code and Data Size: These are the sizes for the OS-independent
1844 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1845 debug version of the code includes the debug output trace mechanism and
1847 much larger code and data size.
1850 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1851 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1853 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1854 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1857 2) iASL Compiler/Disassembler and Tools:
1859 iASL: Fixed a problem with the resource descriptor support where the
1861 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
1862 included in cumulative descriptor offset, resulting in incorrect values
1864 resource tags within resource descriptors appearing after a
1866 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
1868 iASL and Preprocessor: Implemented full support for the #line directive
1870 correctly track original source file line numbers through the .i
1872 output file - for error and warning messages.
1874 iASL: Expand the allowable byte constants for address space IDs.
1876 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
1877 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
1879 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
1881 iASL: Add option to completely disable the preprocessor (-Pn).
1883 iASL: Now emit all error/warning messages to standard error (stderr) by
1884 default (instead of the previous stdout).
1886 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
1888 for resource descriptor offset fix above. Update/cleanup error output
1889 routines. Enable and send iASL errors/warnings to an error logfile
1890 (error.txt). Send all other iASL output to a logfile (compiler.txt).
1892 several extraneous "unrecognized operator" messages.
1894 ----------------------------------------
1895 20 March 2012. Summary of changes for version 20120320:
1898 1) ACPICA Core Subsystem:
1900 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
1901 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
1903 does not execute these methods, and therefore these methods are often
1904 untested. It has been seen on some systems where the execution of these
1905 methods causes errors and also prevents the machine from entering S5. It
1907 therefore suggested that host operating systems do not execute these
1909 by default. In the future, perhaps these methods can be optionally
1911 based on the age of the system and/or what is the newest version of
1913 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
1915 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
1918 Fixed a problem where the length of the local/common FADT was set too
1920 The local FADT table length cannot be set to the common length until the
1921 original length has been examined. There is code that checks the table
1923 and sets various fields appropriately. This can affect older machines
1925 early FADT versions. For example, this can cause inadvertent writes to
1927 CST_CNT register. Julian Anastasov.
1929 Fixed a mapping issue related to a physical table override. Use the
1931 mapping mechanism for tables loaded via the physical override OSL
1933 This allows for early mapping before the virtual memory manager is
1935 Thomas Renninger, Bob Moore.
1937 Enhanced the automatic return-object repair code: Repair a common problem
1939 predefined methods that are defined to return a variable-length Package
1941 sub-objects. If there is only one sub-object, some BIOS ASL code
1943 simply returns the single object instead of a Package with one sub-
1945 This new support will repair this error by wrapping a Package object
1947 the original object, creating the correct and expected Package with one
1949 object. Names that can be repaired in this manner include: _ALR, _CSD,
1951 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
1954 Changed the exception code returned for invalid ACPI paths passed as
1955 parameters to external interfaces such as AcpiEvaluateObject. Was
1956 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
1958 Example Code and Data Size: These are the sizes for the OS-independent
1959 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1961 version of the code includes the debug output trace mechanism and has a
1963 larger code and data size.
1966 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
1967 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1969 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1970 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1973 2) iASL Compiler/Disassembler and Tools:
1975 iASL: Added the infrastructure and initial implementation of a integrated
1977 like preprocessor. This will simplify BIOS development process by
1979 the need for a separate preprocessing step during builds. On Windows, it
1981 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
1982 features including full #define() macro support are still under
1984 These preprocessor directives are supported:
1997 In addition, these new command line options are supported:
1998 -D <symbol> Define symbol for preprocessor use
1999 -li Create preprocessed output file (*.i)
2000 -P Preprocess only and create preprocessor output file (*.i)
2002 Table Compiler: Fixed a problem where the equals operator within an
2004 did not work properly.
2006 Updated iASL to use the current versions of Bison/Flex. Updated the
2008 project file to invoke these tools from the standard location. ACPICA BZ
2011 Flex for Windows: V2.5.4
2012 Bison for Windows: V2.4.1
2014 ----------------------------------------
2015 15 February 2012. Summary of changes for version 20120215:
2018 1) ACPICA Core Subsystem:
2020 There have been some major changes to the sleep/wake support code, as
2021 described below (a - e).
2023 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2024 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2025 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2027 time the _BFS method is called and the _WAK method is called. NOTE: all
2029 must update their wake/resume code or else sleep/wake will not work
2033 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2035 method. Some machines require that the GPEs are enabled before the _WAK
2037 is executed. Thomas Renninger.
2039 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2041 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2043 determine whether the system is rebooting or resuming. Matthew Garrett.
2045 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2047 match the ACPI specification requirement. Rafael Wysocki.
2049 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2050 registers within the V5 FADT. This support adds two new files:
2051 hardware/hwesleep.c implements the support for the new registers. Moved
2053 sleep/wake external interfaces to hardware/hwxfsleep.c.
2056 Added a new OSL interface for ACPI table overrides,
2057 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2058 table via a physical address, instead of the logical address required by
2059 AcpiOsTableOverride. This simplifies the host implementation. Initial
2060 implementation by Thomas Renninger. The ACPICA implementation creates a
2062 shared function for table overrides that attempts both a logical and a
2065 Expanded the OSL memory read/write interfaces to 64-bit data
2066 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2067 transfer support for GAS register structures passed to AcpiRead and
2070 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2072 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2074 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2076 10% of the code and 5% of the static data, and the following hardware
2078 features become unavailable:
2079 PM Event and Control registers
2080 SCI interrupt (and handler)
2082 General Purpose Events (GPEs)
2085 FACS table (Waking vectors and Global Lock)
2087 Updated the unix tarball directory structure to match the ACPICA git
2089 tree. This ensures that the generic unix makefiles work properly (in
2090 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2093 Updated the return value of the _REV predefined method to integer value 5
2095 reflect ACPI 5.0 support.
2097 Moved the external ACPI PM timer interface prototypes to the public
2099 file where they belong.
2101 Example Code and Data Size: These are the sizes for the OS-independent
2102 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2104 version of the code includes the debug output trace mechanism and has a
2106 larger code and data size.
2109 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2110 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2112 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2113 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2116 2) iASL Compiler/Disassembler and Tools:
2118 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2119 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2120 incorrectly displayed.
2122 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2125 ----------------------------------------
2126 11 January 2012. Summary of changes for version 20120111:
2129 1) ACPICA Core Subsystem:
2131 Implemented a new mechanism to allow host device drivers to check for
2133 range conflicts with ACPI Operation Regions. Both SystemMemory and
2135 address spaces are supported. A new external interface,
2136 AcpiCheckAddressRange,
2137 allows drivers to check an address range against the ACPI namespace. See
2139 ACPICA reference for additional details. Adds one new file,
2140 utilities/utaddress.c. Lin Ming, Bob Moore.
2142 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2145 Status registers, update the ACPI 5.0 flags, and update internal data
2146 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2150 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2152 all module headers and signons, including the standard Linux header. This
2153 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2155 all ACPICA utilities.
2157 Example Code and Data Size: These are the sizes for the OS-independent
2158 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2160 version of the code includes the debug output trace mechanism and has a
2162 larger code and data size.
2165 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2166 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2168 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2169 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2172 2) iASL Compiler/Disassembler and Tools:
2174 Disassembler: fixed a problem with the automatic resource tag generation
2175 support. Fixes a problem where the resource tags are inadvertently not
2176 constructed if the table being disassembled contains external references
2178 control methods. Moved the actual construction of the tags to after the
2180 namespace is constructed (after 2nd parse is invoked due to external
2182 method references.) ACPICA BZ 941.
2184 Table Compiler: Make all "generic" operators caseless. These are the
2186 like UINT8, String, etc. Making these caseless improves ease-of-use.
2190 ----------------------------------------
2191 23 November 2011. Summary of changes for version 20111123:
2193 0) ACPI 5.0 Support:
2195 This release contains full support for the ACPI 5.0 specification, as
2198 Reduced Hardware Support:
2199 -------------------------
2201 This support allows for ACPI systems without the usual ACPI hardware.
2203 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2205 not attempt to initialize or use any of the usual ACPI hardware. Note,
2207 this flag is set, all of the following ACPI hardware is assumed to be not
2208 present and is not initialized or accessed:
2210 General Purpose Events (GPEs)
2211 Fixed Events (PM1a/PM1b and PM Control)
2212 Power Management Timer and Console Buttons (power/sleep)
2213 Real-time Clock Alarm
2215 System Control Interrupt (SCI)
2216 The FACS is assumed to be non-existent
2221 All new tables and updates to existing tables are fully supported in the
2222 ACPICA headers (for use by device drivers), the disassembler, and the
2224 Data Table Compiler. ACPI 5.0 defines these new tables:
2226 BGRT /* Boot Graphics Resource Table */
2227 DRTM /* Dynamic Root of Trust for Measurement table */
2228 FPDT /* Firmware Performance Data Table */
2229 GTDT /* Generic Timer Description Table */
2230 MPST /* Memory Power State Table */
2231 PCCT /* Platform Communications Channel Table */
2232 PMTT /* Platform Memory Topology Table */
2233 RASF /* RAS Feature table */
2235 Operation Regions/SpaceIDs:
2236 ---------------------------
2238 All new operation regions are fully supported by the iASL compiler, the
2239 disassembler, and the ACPICA runtime code (for dispatch to region
2241 The new operation region Space IDs are:
2246 Resource Descriptors:
2247 ---------------------
2249 All new ASL resource descriptors are fully supported by the iASL
2252 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2254 all new predefined resource tags). New descriptors are:
2263 ASL/AML Operators, New and Modified:
2264 ------------------------------------
2266 One new operator is added, the Connection operator, which is used to
2268 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2270 field objects within an operation region. Several new protocols are
2272 with the AccessAs operator. All are fully supported by the iASL compiler,
2273 disassembler, and runtime ACPICA AML interpreter:
2275 Connection // Declare Field Connection
2277 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2278 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2280 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2281 RawDataBuffer // Data type for Vendor Data
2284 Predefined ASL/AML Objects:
2285 ---------------------------
2287 All new predefined objects/control-methods are supported by the iASL
2289 and the ACPICA runtime validation/repair (arguments and return values.)
2291 predefined names include the following:
2293 Standard Predefined Names (Objects or Control Methods):
2294 _AEI, _CLS, _CPC, _CWS, _DEP,
2295 _DLM, _EVT, _GCP, _CRT, _GWS,
2296 _HRV, _PRE, _PSE, _SRT, _SUB.
2298 Resource Tags (Names used to access individual fields within resource
2300 _DBT, _DPL, _DRS, _END, _FLC,
2301 _IOR, _LIN, _MOD, _PAR, _PHA,
2302 _PIN, _PPI, _POL, _RXL, _SLV,
2303 _SPE, _STB, _TXL, _VEN.
2305 ACPICA External Interfaces:
2306 ---------------------------
2308 Several new interfaces have been defined for use by ACPI-related device
2309 drivers and other host OS services:
2311 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
2313 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
2314 provided by the BIOS. They are intended to be used in conjunction with
2316 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
2317 mutual exclusion with the AML code/interpreter.
2319 AcpiGetEventResources: Returns the (formatted) resource descriptors as
2321 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
2323 resource descriptors associated with hardware-reduced platform events,
2325 to the AcpiGetCurrentResources interface.
2327 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
2328 operation regions, information about the Connection() object and any
2330 length information is passed to the region handler within the Context
2333 AcpiBufferToResource: This interface converts a raw AML buffer containing
2335 resource template or resource descriptor to the ACPI_RESOURCE internal
2337 suitable for use by device drivers. Can be used by an operation region
2339 to convert the Connection() buffer object into a ACPI_RESOURCE.
2341 Miscellaneous/Tools/TestSuites:
2342 -------------------------------
2344 Support for extended _HID names (Four alpha characters instead of three).
2345 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
2346 Support for ACPI 5.0 features in the ASLTS test suite.
2347 Fully updated documentation (ACPICA and iASL reference documents.)
2349 ACPI Table Definition Language:
2350 -------------------------------
2352 Support for this language was implemented and released as a subsystem of
2354 iASL compiler in 2010. (See the iASL compiler User Guide.)
2357 Non-ACPI 5.0 changes for this release:
2358 --------------------------------------
2360 1) ACPICA Core Subsystem:
2362 Fix a problem with operation region declarations where a failure can
2365 the region name and an argument that evaluates to an object (such as the
2366 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
2369 Do not abort an ACPI table load if an invalid space ID is found within.
2371 will be caught later if the offending method is executed. ACPICA BZ 925.
2373 Fixed an issue with the FFixedHW space ID where the ID was not always
2374 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
2376 Fixed a problem with the 32-bit generation of the unix-specific OSL
2377 (osunixxf.c). Lin Ming, ACPICA BZ 936.
2379 Several changes made to enable generation with the GCC 4.6 compiler.
2383 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
2385 field registers out-of-range.
2387 2) iASL Compiler/Disassembler and Tools:
2389 iASL: Implemented the __PATH__ operator, which returns the full pathname
2391 the current source file.
2393 AcpiHelp: Automatically display expanded keyword information for all ASL
2396 Debugger: Add "Template" command to disassemble/dump resource template
2399 Added a new master script to generate and execute the ASLTS test suite.
2400 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
2402 iASL: Fix problem with listing generation during processing of the
2404 operator where AML listing was disabled until the entire Switch block was
2407 iASL: Improve support for semicolon statement terminators. Fix "invalid
2408 character" message for some cases when the semicolon is used. Semicolons
2410 now allowed after every <Term> grammar element. ACPICA BZ 927.
2412 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
2415 Disassembler: Fix problem with disassembly of the DataTableRegion
2417 where an inadvertent "Unhandled deferred opcode" message could be
2420 3) Example Code and Data Size
2422 These are the sizes for the OS-independent acpica.lib produced by the
2423 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2424 includes the debug output trace mechanism and has a much larger code and
2429 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2430 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2432 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2433 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2435 ----------------------------------------
2436 22 September 2011. Summary of changes for version 20110922:
2440 Support for ACPI 5.0 in ACPICA has been underway for several months and
2442 be released at the same time that ACPI 5.0 is officially released.
2444 The ACPI 5.0 specification is on track for release in the next few
2447 1) ACPICA Core Subsystem:
2449 Fixed a problem where the maximum sleep time for the Sleep() operator was
2450 intended to be limited to two seconds, but was inadvertently limited to
2454 Linux and Unix makefiles: Added header file dependencies to ensure
2456 generation of ACPICA core code and utilities. Also simplified the
2458 considerably through the use of the vpath variable to specify search
2462 2) iASL Compiler/Disassembler and Tools:
2464 iASL: Implemented support to check the access length for all fields
2466 access named Resource Descriptor fields. For example, if a resource field
2468 defined to be two bits, a warning is issued if a CreateXxxxField() is
2470 with an incorrect bit length. This is implemented for all current
2472 descriptor names. ACPICA BZ 930.
2474 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
2478 iASL: Fixed a couple of issues associated with variable-length package
2479 objects. 1) properly handle constants like One, Ones, Zero -- do not make
2481 VAR_PACKAGE when these are used as a package length. 2) Allow the
2483 opcode (in addition to PACKAGE) when validating object types for
2487 iASL: Emit statistics for all output files (instead of just the ASL input
2489 AML output). Includes listings, hex files, etc.
2491 iASL: Added -G option to the table compiler to allow the compilation of
2493 ACPI tables. The only part of a table that is required is the standard
2498 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
2500 which also adds correct 64-bit support. Also, now all output filenames
2502 completely lower case.
2504 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
2505 loading table files. A warning is issued for any such tables. The only
2506 exception is an FADT. This also fixes a possible fault when attempting to
2508 non-AML tables. ACPICA BZ 932.
2510 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
2512 missing table terminator could cause a fault when using the -p option.
2514 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
2517 3) Example Code and Data Size
2519 These are the sizes for the OS-independent acpica.lib produced by the
2520 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2521 includes the debug output trace mechanism and has a much larger code and
2525 Previous Release (VC 9.0):
2526 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2527 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2528 Current Release (VC 9.0):
2529 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2530 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2533 ----------------------------------------
2534 23 June 2011. Summary of changes for version 20110623:
2536 1) ACPI CA Core Subsystem:
2538 Updated the predefined name repair mechanism to not attempt repair of a
2540 return object if a _PSS object is present. We can only sort the _TSS
2542 package if there is no _PSS within the same scope. This is because if
2545 present, the ACPI specification dictates that the _TSS Power Dissipation
2547 is to be ignored, and therefore some BIOSs leave garbage values in the
2549 Power field(s). In this case, it is best to just return the _TSS package
2551 is. Reported by, and fixed with assistance from Fenghua Yu.
2553 Added an option to globally disable the control method return value
2555 and repair. This runtime option can be used to disable return value
2558 this is causing a problem on a particular machine. Also added an option
2560 AcpiExec (-dr) to set this disable flag.
2562 All makefiles and project files: Major changes to improve generation of
2564 tools. ACPICA BZ 912:
2565 Reduce default optimization levels to improve compatibility
2566 For Linux, add strict-aliasing=0 for gcc 4
2567 Cleanup and simplify use of command line defines
2568 Cleanup multithread library support
2569 Improve usage messages
2571 Linux-specific header: update handling of THREAD_ID and pthread. For the
2573 bit case, improve casting to eliminate possible warnings, especially with
2577 Example Code and Data Size: These are the sizes for the OS-independent
2578 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2580 version of the code includes the debug output trace mechanism and has a
2582 larger code and data size.
2584 Previous Release (VC 9.0):
2585 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2586 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2587 Current Release (VC 9.0):
2588 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2589 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2591 2) iASL Compiler/Disassembler and Tools:
2593 With this release, a new utility named "acpihelp" has been added to the
2595 package. This utility summarizes the ACPI specification chapters for the
2597 and AML languages. It generates under Linux/Unix as well as Windows, and
2598 provides the following functionality:
2599 Find/display ASL operator(s) -- with description and syntax.
2600 Find/display ASL keyword(s) -- with exact spelling and descriptions.
2601 Find/display ACPI predefined name(s) -- with description, number
2602 of arguments, and the return value data type.
2603 Find/display AML opcode name(s) -- with opcode, arguments, and
2605 Decode/display AML opcode -- with opcode name, arguments, and
2608 Service Layers: Make multi-thread support configurable. Conditionally
2610 the multi-thread support so that threading libraries will not be linked
2613 necessary. The only tool that requires multi-thread support is AcpiExec.
2615 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
2617 Bison appear to want the interface to yyerror to be a const char * (or at
2618 least this is a problem when generating iASL on some systems.) ACPICA BZ
2622 Tools: Fix for systems where O_BINARY is not defined. Only used for
2624 versions of the tools.
2626 ----------------------------------------
2627 27 May 2011. Summary of changes for version 20110527:
2629 1) ACPI CA Core Subsystem:
2631 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
2633 signature. Now, only allow SSDT, OEMx, and a null signature. History:
2634 1) Originally, we checked the table signature for "SSDT" or "PSDT".
2635 (PSDT is now obsolete.)
2636 2) We added support for OEMx tables, signature "OEM" plus a fourth
2637 "don't care" character.
2638 3) Valid tables were encountered with a null signature, so we just
2639 gave up on validating the signature, (05/2008).
2640 4) We encountered non-AML tables such as the MADT, which caused
2641 interpreter errors and kernel faults. So now, we once again allow
2642 only SSDT, OEMx, and now, also a null signature. (05/2011).
2644 Added the missing _TDL predefined name to the global name list in order
2646 enable validation. Affects both the core ACPICA code and the iASL
2649 Example Code and Data Size: These are the sizes for the OS-independent
2650 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2652 version of the code includes the debug output trace mechanism and has a
2654 larger code and data size.
2656 Previous Release (VC 9.0):
2657 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2658 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2659 Current Release (VC 9.0):
2660 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2661 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2663 2) iASL Compiler/Disassembler and Tools:
2665 Debugger/AcpiExec: Implemented support for "complex" method arguments on
2667 debugger command line. This adds support beyond simple integers --
2669 Strings, Buffers, and Packages. Includes support for nested packages.
2670 Increased the default command line buffer size to accommodate these
2672 See the ACPICA reference for details and syntax. ACPICA BZ 917.
2674 Debugger/AcpiExec: Implemented support for "default" method arguments for
2676 Execute/Debug command. Now, the debugger will always invoke a control
2678 with the required number of arguments -- even if the command line
2680 none or insufficient arguments. It uses default integer values for any
2682 arguments. Also fixes a bug where only six method arguments maximum were
2683 supported instead of the required seven.
2685 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
2687 also return status in order to prevent buffer overruns. See the ACPICA
2688 reference for details and syntax. ACPICA BZ 921
2690 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
2691 makefiles to simplify support for the two different but similar parser
2692 generators, bison and yacc.
2694 Updated the generic unix makefile for gcc 4. The default gcc version is
2696 expected to be 4 or greater, since options specific to gcc 4 are used.
2698 ----------------------------------------
2699 13 April 2011. Summary of changes for version 20110413:
2701 1) ACPI CA Core Subsystem:
2703 Implemented support to execute a so-called "orphan" _REG method under the
2705 device. This change will force the execution of a _REG method underneath
2708 device even if there is no corresponding operation region of type
2709 EmbeddedControl. Fixes a problem seen on some machines and apparently is
2710 compatible with Windows behavior. ACPICA BZ 875.
2712 Added more predefined methods that are eligible for automatic NULL
2714 element removal. This change adds another group of predefined names to
2717 of names that can be repaired by having NULL package elements dynamically
2718 removed. This group are those methods that return a single variable-
2720 package containing simple data types such as integers, buffers, strings.
2722 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
2725 and _TZD. ACPICA BZ 914.
2727 Split and segregated all internal global lock functions to a new file,
2730 Updated internal address SpaceID for DataTable regions. Moved this
2733 id in preparation for ACPI 5.0 changes that will include some new space
2736 change should not affect user/host code.
2738 Example Code and Data Size: These are the sizes for the OS-independent
2740 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2742 the code includes the debug output trace mechanism and has a much larger
2747 Previous Release (VC 9.0):
2748 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2749 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2750 Current Release (VC 9.0):
2751 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2752 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2754 2) iASL Compiler/Disassembler and Tools:
2756 iASL/DTC: Major update for new grammar features. Allow generic data types
2758 custom ACPI tables. Field names are now optional. Any line can be split
2760 multiple lines using the continuation char (\). Large buffers now use
2762 continuation character(s) and no colon on the continuation lines. See the
2764 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
2767 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
2769 Since the parser stuffs a "zero" as the return value for these statements
2772 the underlying AML grammar), they were seen as "return with value" by the
2774 semantic checking. They are now seen correctly as "null" return
2777 iASL: Check if a_REG declaration has a corresponding Operation Region.
2779 check for each _REG to ensure that there is in fact a corresponding
2781 region declaration in the same scope. If not, the _REG method is not very
2783 since it probably won't be executed. ACPICA BZ 915.
2785 iASL/DTC: Finish support for expression evaluation. Added a new
2788 that implements c-style operator precedence and parenthesization. ACPICA
2792 Disassembler/DTC: Remove support for () and <> style comments in data
2795 that DTC has full expression support, we don't want to have comment
2798 start with a parentheses or a less-than symbol. Now, only the standard /*
2801 comments are supported, as well as the bracket [] comments.
2803 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
2805 headers in the acpidump file. Update the header validation to support
2807 tables. Problem introduced in previous AcpiXtract version in the change
2809 support "wrong checksum" error messages emitted by acpidump utility.
2811 iASL: Add a * option to generate all template files (as a synonym for
2815 "iasl -T *" or "iasl -T ALL".
2817 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
2819 abort the compiler on "fatal" errors, simply should abort the current
2821 This allows multiple compiles with a single (possibly wildcard) compiler
2824 ----------------------------------------
2825 16 March 2011. Summary of changes for version 20110316:
2827 1) ACPI CA Core Subsystem:
2829 Fixed a problem caused by a _PRW method appearing at the namespace root
2831 during the setup of wake GPEs. A fault could occur if a _PRW directly
2834 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
2836 Implemented support for "spurious" Global Lock interrupts. On some
2838 global lock interrupt can occur without the pending flag being set. Upon
2841 interrupt, we now ensure that a thread is actually waiting for the lock
2843 signaling GL availability. Rafael Wysocki, Bob Moore.
2845 Example Code and Data Size: These are the sizes for the OS-independent
2847 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2849 the code includes the debug output trace mechanism and has a much larger
2854 Previous Release (VC 9.0):
2855 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2856 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2857 Current Release (VC 9.0):
2858 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2859 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2861 2) iASL Compiler/Disassembler and Tools:
2863 Implemented full support for the "SLIC" ACPI table. Includes support in
2865 header files, disassembler, table compiler, and template generator. Bob
2869 AcpiXtract: Correctly handle embedded comments and messages from
2871 Apparently some or all versions of acpidump will occasionally emit a
2874 "Wrong checksum", etc., into the dump file. This was causing problems for
2875 AcpiXtract. ACPICA BZ 905.
2877 iASL: Fix the Linux makefile by removing an inadvertent double file
2881 AcpiExec: Update installation of operation region handlers. Install one
2883 for a user-defined address space. This is used by the ASL test suite
2886 ----------------------------------------
2887 11 February 2011. Summary of changes for version 20110211:
2889 1) ACPI CA Core Subsystem:
2891 Added a mechanism to defer _REG methods for some early-installed
2893 Most user handlers should be installed before call to
2894 AcpiEnableSubsystem.
2895 However, Event handlers and region handlers should be installed after
2896 AcpiInitializeObjects. Override handlers for the "default" regions should
2898 installed early, however. This change executes all _REG methods for the
2899 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
2900 chicken/egg issues between them. ACPICA BZ 848.
2902 Implemented an optimization for GPE detection. This optimization will
2904 ignore GPE registers that contain no enabled GPEs -- there is no need to
2905 read the register since this information is available internally. This
2906 becomes more important on machines with a large GPE space. ACPICA
2908 884. Lin Ming. Suggestion from Joe Liu.
2910 Removed all use of the highly unreliable FADT revision field. The
2912 number in the FADT has been found to be completely unreliable and cannot
2914 trusted. Only the actual table length can be used to infer the version.
2916 change updates the ACPICA core and the disassembler so that both no
2918 even look at the FADT version and instead depend solely upon the FADT
2921 Fix an unresolved name issue for the no-debug and no-error-message source
2922 generation cases. The _AcpiModuleName was left undefined in these cases,
2924 it is actually needed as a parameter to some interfaces. Define
2925 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
2927 Split several large files (makefiles and project files updated)
2928 utglobal.c -> utdecode.c
2929 dbcomds.c -> dbmethod.c dbnames.c
2930 dsopcode.c -> dsargs.c dscontrol.c
2931 dsload.c -> dsload2.c
2932 aslanalyze.c -> aslbtypes.c aslwalks.c
2934 Example Code and Data Size: These are the sizes for the OS-independent
2935 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2936 debug version of the code includes the debug output trace mechanism and
2938 a much larger code and data size.
2940 Previous Release (VC 9.0):
2941 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2942 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2943 Current Release (VC 9.0):
2944 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2945 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2947 2) iASL Compiler/Disassembler and Tools:
2949 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
2950 These are useful C-style macros with the standard definitions. ACPICA
2953 iASL/DTC: Added support for integer expressions and labels. Support for
2955 expressions for all integer fields in all ACPI tables. Support for labels
2957 "generic" portions of tables such as UEFI. See the iASL reference manual.
2959 Debugger: Added a command to display the status of global handlers. The
2960 "handlers" command will display op region, fixed event, and miscellaneous
2961 global handlers. installation status -- and for op regions, whether
2963 or user-installed handler will be used.
2965 iASL: Warn if reserved method incorrectly returns a value. Many
2967 names are defined such that they do not return a value. If implemented as
2969 method, issue a warning if such a name explicitly returns a value. ACPICA
2972 iASL: Added detection of GPE method name conflicts. Detects a conflict
2974 there are two GPE methods of the form _Lxy and _Exy in the same scope.
2976 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
2978 iASL/DTC: Fixed a couple input scanner issues with comments and line
2979 numbers. Comment remover could get confused and miss a comment ending.
2981 a problem with line counter maintenance.
2983 iASL/DTC: Reduced the severity of some errors from fatal to error. There
2985 no need to abort on simple errors within a field definition.
2987 Debugger: Simplified the output of the help command. All help output now
2989 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
2991 ----------------------------------------
2992 12 January 2011. Summary of changes for version 20110112:
2994 1) ACPI CA Core Subsystem:
2996 Fixed a race condition between method execution and namespace walks that
2998 possibly cause a fault. The problem was apparently introduced in version
2999 20100528 as a result of a performance optimization that reduces the
3002 namespace walks upon method exit by using the delete_namespace_subtree
3003 function instead of the delete_namespace_by_owner function used
3005 Bug is a missing namespace lock in the delete_namespace_subtree function.
3006 dana.myers@oracle.com
3008 Fixed several issues and a possible fault with the automatic "serialized"
3009 method support. History: This support changes a method to "serialized" on
3011 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3012 possibility that it cannot handle reentrancy. This fix repairs a couple
3014 issues seen in the field, especially on machines with many cores:
3016 1) Delete method children only upon the exit of the last thread,
3017 so as to not delete objects out from under other running threads
3018 (and possibly causing a fault.)
3019 2) Set the "serialized" bit for the method only upon the exit of the
3020 Last thread, so as to not cause deadlock when running threads
3022 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3023 so that there is no longer any confusion between the two.
3025 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3027 Debugger: Now lock the namespace for duration of a namespace dump.
3029 issues if the namespace is changing dynamically underneath the debugger.
3030 Especially affects temporary namespace nodes, since the debugger displays
3033 Updated the ordering of include files. The ACPICA headers should appear
3034 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3036 any necessary compiler-specific defines, etc. Affects the ACPI-related
3040 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3042 to all module headers and signons, including the Linux header. This
3044 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3047 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3048 project files for VC++ 6.0 are now obsolete. New project files can be
3050 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3053 Example Code and Data Size: These are the sizes for the OS-independent
3054 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3055 debug version of the code includes the debug output trace mechanism and
3057 much larger code and data size.
3059 Previous Release (VC 6.0):
3060 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3061 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3062 Current Release (VC 9.0):
3063 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3064 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3066 2) iASL Compiler/Disassembler and Tools:
3068 iASL: Added generic data types to the Data Table compiler. Add "generic"
3070 types such as UINT32, String, Unicode, etc., to simplify the generation
3072 platform-defined tables such as UEFI. Lin Ming.
3074 iASL: Added listing support for the Data Table Compiler. Adds listing
3076 (-l) to display actual binary output for each line of input code.
3078 ----------------------------------------
3079 09 December 2010. Summary of changes for version 20101209:
3081 1) ACPI CA Core Subsystem:
3083 Completed the major overhaul of the GPE support code that was begun in
3085 2010. Major features include: removal of _PRW execution in ACPICA (host
3086 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3087 changes to existing interfaces, simplification of GPE handler operation,
3089 a handful of new interfaces:
3095 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3097 See the ACPICA Programmer Reference for full details and programming
3098 information. See the new section 4.4 "General Purpose Event (GPE)
3100 for a full overview, and section 8.7 "ACPI General Purpose Event
3102 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3104 Bob Moore, Rafael Wysocki.
3106 Implemented a new GPE feature for Windows compatibility, the "Implicit
3108 GPE Notify". This feature will automatically issue a Notify(2) on a
3110 when a Wake GPE is received if there is no corresponding GPE method or
3111 handler. ACPICA BZ 870.
3113 Fixed a problem with the Scope() operator during table parse and load
3115 During load phase (table load or method execution), the scope operator
3117 not enter the target into the namespace. Instead, it should open a new
3119 at the target location. Linux BZ 19462, ACPICA BZ 882.
3121 Example Code and Data Size: These are the sizes for the OS-independent
3122 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3123 debug version of the code includes the debug output trace mechanism and
3125 much larger code and data size.
3128 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3129 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3131 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3132 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3134 2) iASL Compiler/Disassembler and Tools:
3136 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3138 "bus-specific" per the ACPI specification, and therefore any characters
3140 acceptable. The only checks that can be performed are for a null string
3142 perhaps for a leading asterisk. ACPICA BZ 886.
3144 iASL: Fixed a problem where a syntax error that caused a premature EOF
3145 condition on the source file emitted a very confusing error message. The
3146 premature EOF is now detected correctly. ACPICA BZ 891.
3148 Disassembler: Decode the AccessSize within a Generic Address Structure
3150 access, word access, etc.) Note, this field does not allow arbitrary bit
3151 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3153 New: AcpiNames utility - Example namespace dump utility. Shows an example
3155 ACPICA configuration for a minimal namespace dump utility. Uses table and
3156 namespace managers, but no AML interpreter. Does not add any
3158 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3159 partition and configure ACPICA. ACPICA BZ 883.
3161 AML Debugger: Increased the debugger buffer size for method return
3163 Was 4K, increased to 16K. Also enhanced error messages for debugger
3165 execution, including the buffer overflow case.
3167 ----------------------------------------
3168 13 October 2010. Summary of changes for version 20101013:
3170 1) ACPI CA Core Subsystem:
3172 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3174 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3175 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3177 Changed the type of the predefined namespace object _TZ from ThermalZone
3179 Device. This was found to be confusing to the host software that
3181 the various thermal zones, since _TZ is not really a ThermalZone.
3184 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3187 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3188 string is "Windows 2006 SP2".
3190 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3192 code automatically repairs _HID-related strings, this type of code is no
3193 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3196 Example Code and Data Size: These are the sizes for the OS-independent
3197 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3198 debug version of the code includes the debug output trace mechanism and
3200 much larger code and data size.
3203 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3204 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3206 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3207 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3209 2) iASL Compiler/Disassembler and Tools:
3211 iASL: Implemented additional compile-time validation for _HID strings.
3213 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3216 the string must be exactly seven or eight characters. For both _HID and
3218 strings, all characters must be alphanumeric. ACPICA BZ 874.
3220 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3221 descriptors that are mostly or all zeros, with the expectation that they
3223 be filled in at runtime. iASL now allows this as long as there is a
3225 tag" (name) associated with the descriptor, which gives the ASL a handle
3226 needed to modify the descriptor. ACPICA BZ 873.
3228 Added single-thread support to the generic Unix application OSL.
3230 for iASL support, this change removes the use of semaphores in the
3232 threaded ACPICA tools/applications - increasing performance. The
3233 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3234 option. ACPICA BZ 879.
3236 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3238 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3240 iASL: Moved all compiler messages to a new file, aslmessages.h.
3242 ----------------------------------------
3243 15 September 2010. Summary of changes for version 20100915:
3245 1) ACPI CA Core Subsystem:
3247 Removed the AcpiOsDerivePciId OSL interface. The various host
3249 of this function were not OS-dependent and are now obsolete and can be
3250 removed from all host OSLs. This function has been replaced by
3251 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3252 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3253 module, hwpci.c. ACPICA BZ 857.
3255 Implemented a dynamic repair for _HID and _CID strings. The following
3256 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3257 string, and 2) the entire string is uppercased. Both repairs are in
3258 accordance with the ACPI specification and will simplify host driver
3262 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3263 always UINT64. This simplifies the ACPICA code, especially any printf
3265 UINT64 is the only common data type for all thread_id types across all
3266 operating systems. It is now up to the host OSL to cast the native
3268 type to UINT64 before returning the value to ACPICA (via
3270 Lin Ming, Bob Moore.
3272 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3274 keyword is not standard across compilers, and this type allows inline to
3276 configured on a per-compiler basis. Lin Ming.
3278 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3280 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3282 during suspend/restore operations. ACPICA BZ 869.
3284 All code that implements error/warning messages with the "ACPI:" prefix
3286 been moved to a new module, utxferror.c.
3288 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
3290 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
3292 Example Code and Data Size: These are the sizes for the OS-independent
3293 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3294 debug version of the code includes the debug output trace mechanism and
3296 much larger code and data size.
3299 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3300 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3302 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3303 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3305 2) iASL Compiler/Disassembler and Tools:
3307 iASL/Disassembler: Write ACPI errors to stderr instead of the output
3309 This keeps the output files free of random error messages that may
3311 from within the namespace/interpreter code. Used this opportunity to
3313 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
3314 866. Lin Ming, Bob Moore.
3316 Tools: update some printfs for ansi warnings on size_t. Handle width
3318 of size_t on 32-bit versus 64-bit generations. Lin Ming.
3320 ----------------------------------------
3321 06 August 2010. Summary of changes for version 20100806:
3323 1) ACPI CA Core Subsystem:
3325 Designed and implemented a new host interface to the _OSI support code.
3327 will allow the host to dynamically add or remove multiple _OSI strings,
3329 well as install an optional handler that is called for each _OSI
3331 Also added a new AML debugger command, 'osi' to display and modify the
3333 _OSI string table, and test support in the AcpiExec utility. See the
3335 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
3337 AcpiInstallInterface - Add an _OSI string.
3338 AcpiRemoveInterface - Delete an _OSI string.
3339 AcpiInstallInterfaceHandler - Install optional _OSI handler.
3341 AcpiOsValidateInterface - no longer used.
3343 source/components/utilities/utosi.c
3345 Re-introduced the support to enable multi-byte transfers for Embedded
3346 Controller (EC) operation regions. A reported problem was found to be a
3348 in the host OS, not in the multi-byte support. Previously, the maximum
3350 size passed to the EC operation region handler was a single byte. There
3352 often EC Fields larger than one byte that need to be transferred, and it
3354 useful for the EC driver to lock these as a single transaction. This
3356 enables single transfers larger than 8 bits. This effectively changes the
3357 access to the EC space from ByteAcc to AnyAcc, and will probably require
3358 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
3360 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
3362 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
3363 prototype in acpiosxf.h had the output value pointer as a (void *).
3364 It should be a (UINT64 *). This may affect some host OSL code.
3366 Fixed a couple problems with the recently modified Linux makefiles for
3368 and AcpiExec. These new makefiles place the generated object files in the
3369 local directory so that there can be no collisions between the files that
3371 shared between them that are compiled with different options.
3373 Example Code and Data Size: These are the sizes for the OS-independent
3374 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3375 debug version of the code includes the debug output trace mechanism and
3377 much larger code and data size.
3380 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3381 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3383 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3384 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3386 2) iASL Compiler/Disassembler and Tools:
3388 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
3390 namespace from and disassemble an entire group of AML files. Useful for
3391 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
3393 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
3395 iASL: Allow multiple invocations of -e option. This change allows
3397 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
3401 ----------------------------------------
3402 02 July 2010. Summary of changes for version 20100702:
3404 1) ACPI CA Core Subsystem:
3406 Implemented several updates to the recently added GPE reference count
3407 support. The model for "wake" GPEs is changing to give the host OS
3409 control of these GPEs. Eventually, the ACPICA core will not execute any
3411 methods, since the host already must execute them. Also, additional
3413 were made to help ensure that the reference counts are kept in proper
3414 synchronization with reality. Rafael J. Wysocki.
3416 1) Ensure that GPEs are not enabled twice during initialization.
3417 2) Ensure that GPE enable masks stay in sync with the reference count.
3418 3) Do not inadvertently enable GPEs when writing GPE registers.
3419 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
3420 interface. This interface will set or clear individual GPEs for wakeup.
3421 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
3423 are now used for "runtime" GPEs only.
3425 Changed the behavior of the GPE install/remove handler interfaces. The
3428 no longer disabled during this process, as it was found to cause problems
3430 some machines. Rafael J. Wysocki.
3432 Reverted a change introduced in version 20100528 to enable Embedded
3433 Controller multi-byte transfers. This change was found to cause problems
3435 Index Fields and possibly Bank Fields. It will be reintroduced when these
3436 problems have been resolved.
3438 Fixed a problem with references to Alias objects within Package Objects.
3440 reference to an Alias within the definition of a Package was not always
3441 resolved properly. Aliases to objects like Processors, Thermal zones,
3443 were resolved to the actual object instead of a reference to the object
3446 should be. Package objects are only allowed to contain integer, string,
3447 buffer, package, and reference objects. Redhat bugzilla 608648.
3449 Example Code and Data Size: These are the sizes for the OS-independent
3450 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3451 debug version of the code includes the debug output trace mechanism and
3453 much larger code and data size.
3456 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3457 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3459 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3460 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3462 2) iASL Compiler/Disassembler and Tools:
3464 iASL: Implemented a new compiler subsystem to allow definition and
3465 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
3467 are called "ACPI Data Tables", and the new compiler is the "Data Table
3468 Compiler". This compiler is intended to simplify the existing error-prone
3469 process of creating these tables for the BIOS, as well as allowing the
3470 disassembly, modification, recompilation, and override of existing ACPI
3472 tables. See the iASL User Guide for detailed information.
3474 iASL: Implemented a new Template Generator option in support of the new
3476 Table Compiler. This option will create examples of all known ACPI tables
3477 that can be used as the basis for table development. See the iASL
3478 documentation and the -T option.
3480 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
3483 Updated the Linux makefiles for iASL and AcpiExec to place the generated
3484 object files in the local directory so that there can be no collisions
3485 between the shared files between them that are generated with different
3488 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
3490 the #define __APPLE__ to enable this support.
3492 ----------------------------------------
3493 28 May 2010. Summary of changes for version 20100528:
3495 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
3496 available at www.acpi.info. This is primarily an errata release.
3498 1) ACPI CA Core Subsystem:
3500 Undefined ACPI tables: We are looking for the definitions for the
3502 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
3504 Implemented support to enable multi-byte transfers for Embedded
3506 (EC) operation regions. Previously, the maximum data size passed to the
3508 operation region handler was a single byte. There are often EC Fields
3510 than one byte that need to be transferred, and it is useful for the EC
3512 to lock these as a single transaction. This change enables single
3514 larger than 8 bits. This effectively changes the access to the EC space
3516 ByteAcc to AnyAcc, and will probably require changes to the host OS
3518 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
3520 transfers. Alexey Starikovskiy, Lin Ming
3522 Implemented a performance enhancement for namespace search and access.
3524 change enhances the performance of namespace searches and walks by adding
3526 backpointer to the parent in each namespace node. On large namespaces,
3528 change can improve overall ACPI performance by up to 9X. Adding a pointer
3530 each namespace node increases the overall size of the internal namespace
3532 about 5%, since each namespace entry usually consists of both a namespace
3533 node and an ACPI operand object. However, this is the first growth of the
3534 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
3536 Implemented a performance optimization that reduces the number of
3538 walks. On control method exit, only walk the namespace if the method is
3540 to have created namespace objects outside of its local scope. Previously,
3542 entire namespace was traversed on each control method exit. This change
3544 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
3547 Added support to truncate I/O addresses to 16 bits for Windows
3549 Some ASL code has been seen in the field that inadvertently has bits set
3550 above bit 15. This feature is optional and is enabled if the BIOS
3552 any Windows OSI strings. It can also be enabled by the host OS. Matthew
3555 Added support to limit the maximum time for the ASL Sleep() operator. To
3556 prevent accidental deep sleeps, limit the maximum time that Sleep() will
3557 actually sleep. Configurable, the default maximum is two seconds. ACPICA
3560 Added run-time validation support for the _WDG and_WED Microsoft
3562 methods. These objects are defined by "Windows Instrumentation", and are
3564 part of the ACPI spec. ACPICA BZ 860.
3566 Expanded all statistic counters used during namespace and device
3567 initialization from 16 to 32 bits in order to support very large
3570 Replaced all instances of %d in printf format specifiers with %u since
3572 all integers in ACPICA are unsigned.
3574 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
3578 Example Code and Data Size: These are the sizes for the OS-independent
3579 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3580 debug version of the code includes the debug output trace mechanism and
3582 much larger code and data size.
3585 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3586 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3588 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3589 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3591 2) iASL Compiler/Disassembler and Tools:
3593 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
3594 methods. These objects are defined by "Windows Instrumentation", and are
3596 part of the ACPI spec. ACPICA BZ 860.
3598 AcpiExec: added option to disable the memory tracking mechanism. The -dt
3599 option will disable the tracking mechanism, which improves performance
3602 AcpiExec: Restructured the command line options into -d (disable) and -e
3605 ----------------------------------------
3606 28 April 2010. Summary of changes for version 20100428:
3608 1) ACPI CA Core Subsystem:
3610 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
3611 including FADT-based and GPE Block Devices, execute any _PRW methods in
3613 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
3614 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
3615 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
3616 Devices. Provides compatibility with other ACPI implementations. Two new
3617 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
3620 Fixed a regression introduced in version 20100331 within the table
3622 where initial table loading could fail. This was introduced in the fix
3624 AcpiReallocateRootTable. Also, renamed some of fields in the table
3626 data structures to clarify their meaning and use.
3628 Fixed a possible allocation overrun during internal object copy in
3629 AcpiUtCopySimpleObject. The original code did not correctly handle the
3631 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
3634 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
3635 possible access beyond end-of-allocation. Also, now fully validate
3637 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
3639 Example Code and Data Size: These are the sizes for the OS-independent
3640 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3641 debug version of the code includes the debug output trace mechanism and
3643 much larger code and data size.
3646 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3647 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3649 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3650 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3652 2) iASL Compiler/Disassembler and Tools:
3654 iASL: Implemented Min/Max/Len/Gran validation for address resource
3655 descriptors. This change implements validation for the address fields
3657 are common to all address-type resource descriptors. These checks are
3658 implemented: Checks for valid Min/Max, length within the Min/Max window,
3659 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
3661 table 6-40 in the ACPI 4.0a specification. Also split the large
3663 and aslrestype2.c files into five new files. ACPICA BZ 840.
3665 iASL: Added support for the _Wxx predefined names. This support was
3667 and these names were not recognized by the compiler as valid predefined
3668 names. ACPICA BZ 851.
3670 iASL: Added an error for all predefined names that are defined to return
3672 value and thus must be implemented as Control Methods. These include all
3674 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
3675 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
3677 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
3679 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
3681 dynamically loaded via the Load() operator. Also cleaned up output for
3684 ta and -tc options. ACPICA BZ 853.
3686 Tests: Added a new file with examples of extended iASL error checking.
3687 Demonstrates the advanced error checking ability of the iASL compiler.
3688 Available at tests/misc/badcode.asl.
3690 ----------------------------------------
3691 31 March 2010. Summary of changes for version 20100331:
3693 1) ACPI CA Core Subsystem:
3695 Completed a major update for the GPE support in order to improve support
3697 shared GPEs and to simplify both host OS and ACPICA code. Added a
3699 count mechanism to support shared GPEs that require multiple device
3701 Several external interfaces have changed. One external interface has been
3702 removed. One new external interface was added. Most of the GPE external
3703 interfaces now use the GPE spinlock instead of the events mutex (and the
3704 Flags parameter for many GPE interfaces has been removed.) See the
3706 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
3708 Wysocki. ACPICA BZ 831.
3711 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
3717 Implemented write support for DataTable operation regions. These regions
3719 defined via the DataTableRegion() operator. Previously, only read support
3721 implemented. The ACPI specification allows DataTableRegions to be
3725 Implemented a new subsystem option to force a copy of the DSDT to local
3726 memory. Optionally copy the entire DSDT to local memory (instead of
3728 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
3730 the original DSDT, creating the need for this option. Default is FALSE,
3734 Implemented detection of a corrupted or replaced DSDT. This change adds
3735 support to detect a DSDT that has been corrupted and/or replaced from
3737 the OS (by firmware). This is typically catastrophic for the system, but
3739 been seen on some machines. Once this problem has been detected, the DSDT
3740 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
3742 Fixed two problems with AcpiReallocateRootTable during the root table
3744 When copying the root table to the new allocation, the length used was
3745 incorrect. The new size was used instead of the current table size,
3747 too much data was copied. Also, the count of available slots for ACPI
3749 was not set correctly. Alexey Starikovskiy, Bob Moore.
3751 Example Code and Data Size: These are the sizes for the OS-independent
3752 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3753 debug version of the code includes the debug output trace mechanism and
3755 much larger code and data size.
3758 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3759 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3761 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3762 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3764 2) iASL Compiler/Disassembler and Tools:
3766 iASL: Implement limited typechecking for values returned from predefined
3767 control methods. The type of any returned static (unnamed) object is now
3768 validated. For example, Return(1). ACPICA BZ 786.
3770 iASL: Fixed a predefined name object verification regression. Fixes a
3772 introduced in version 20100304. An error is incorrectly generated if a
3773 predefined name is declared as a static named object with a value defined
3774 using the keywords "Zero", "One", or "Ones". Lin Ming.
3776 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
3778 reducing the requested registry access rights. ACPICA BZ 842.
3780 Disassembler: fixed a possible fault when generating External()
3782 Introduced in commit ae7d6fd: Properly handle externals with parent-
3784 (carat). Fixes a string length allocation calculation. Lin Ming.
3786 ----------------------------------------
3787 04 March 2010. Summary of changes for version 20100304:
3789 1) ACPI CA Core Subsystem:
3791 Fixed a possible problem with the AML Mutex handling function
3792 AcpiExReleaseMutex where the function could fault under the very rare
3793 condition when the interpreter has blocked, the interpreter lock is
3795 the interpreter is then reentered via the same thread, and attempts to
3796 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
3800 Implemented additional configuration support for the AML "Debug Object".
3801 Output from the debug object can now be enabled via a global variable,
3802 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
3804 This debug output is now available in the release version of ACPICA
3806 of just the debug version. Also, the entire debug output module can now
3808 configured out of the ACPICA build if desired. One new file added,
3809 executer/exdebug.c. Lin Ming, Bob Moore.
3811 Added header support for the ACPI MCHI table (Management Controller Host
3812 Interface Table). This table was added in ACPI 4.0, but the defining
3814 has only recently become available.
3816 Standardized output of integer values for ACPICA warnings/errors. Always
3818 0x prefix for hex output, always use %u for unsigned integer decimal
3820 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
3822 invocations.) These invocations were converted from the original
3823 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
3825 Example Code and Data Size: These are the sizes for the OS-independent
3826 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3827 debug version of the code includes the debug output trace mechanism and
3829 much larger code and data size.
3832 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
3833 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
3835 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3836 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3838 2) iASL Compiler/Disassembler and Tools:
3840 iASL: Implemented typechecking support for static (non-control method)
3841 predefined named objects that are declared with the Name() operator. For
3842 example, the type of this object is now validated to be of type Integer:
3843 Name(_BBN, 1). This change migrates the compiler to using the core
3845 name table instead of maintaining a local version. Added a new file,
3846 aslpredef.c. ACPICA BZ 832.
3848 Disassembler: Added support for the ACPI 4.0 MCHI table.
3850 ----------------------------------------
3851 21 January 2010. Summary of changes for version 20100121:
3853 1) ACPI CA Core Subsystem:
3855 Added the 2010 copyright to all module headers and signons. This affects
3856 virtually every file in the ACPICA core subsystem, the iASL compiler, the
3857 tools/utilities, and the test suites.
3859 Implemented a change to the AcpiGetDevices interface to eliminate
3861 invocations of the _STA method. In the case where a specific _HID is
3862 requested, do not run _STA until a _HID match is found. This eliminates
3863 potentially dozens of _STA calls during a search for a particular
3865 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
3867 Implemented an additional repair for predefined method return values.
3869 to repair unexpected NULL elements within returned Package objects.
3872 Integer of value zero, a NULL String, or a zero-length Buffer as
3874 ACPICA BZ 818. Lin Ming, Bob Moore.
3876 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
3878 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
3880 64-bit AML integers). It is now obsolete and this change removes it from
3882 ACPICA code base, replaced by UINT64. The original typedef has been
3884 for now for compatibility with existing device driver code. ACPICA BZ
3887 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
3889 the parse tree object.
3891 Added additional warning options for the gcc-4 generation. Updated the
3893 accordingly. This includes some code restructuring to eliminate
3895 code, elimination of some gotos, elimination of unused return values,
3897 additional casting, and removal of redundant declarations.
3899 Example Code and Data Size: These are the sizes for the OS-independent
3900 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3901 debug version of the code includes the debug output trace mechanism and
3903 much larger code and data size.
3906 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
3907 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
3909 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
3910 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
3912 2) iASL Compiler/Disassembler and Tools:
3914 No functional changes for this release.
3916 ----------------------------------------
3917 14 December 2009. Summary of changes for version 20091214:
3919 1) ACPI CA Core Subsystem:
3921 Enhanced automatic data type conversions for predefined name repairs.
3923 change expands the automatic repairs/conversions for predefined name
3925 values to make Integers, Strings, and Buffers fully interchangeable.
3928 Buffer can be converted to a Package of Integers if necessary. The
3930 module was completely restructured. Lin Ming, Bob Moore.
3932 Implemented automatic removal of null package elements during predefined
3934 repairs. This change will automatically remove embedded and trailing NULL
3935 package elements from returned package objects that are defined to
3938 variable number of sub-packages. The driver is then presented with a
3940 with no null elements to deal with. ACPICA BZ 819.
3942 Implemented a repair for the predefined _FDE and _GTM names. The expected
3943 return value for both names is a Buffer of 5 DWORDs. This repair fixes
3945 possible problems (both seen in the field), where a package of integers
3947 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
3950 Implemented additional module-level code support. This change will
3952 execute module-level code that is not at the root of the namespace (under
3954 Device object, etc.). Now executes the code within the current scope
3956 of the root. ACPICA BZ 762. Lin Ming.
3958 Fixed possible mutex acquisition errors when running _REG methods. Fixes
3960 problem where mutex errors can occur when running a _REG method that is
3962 the same scope as a method-defined operation region or an operation
3964 under a module-level IF block. This type of code is rare, so the problem
3966 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
3968 Fixed a possible memory leak during module-level code execution. An
3970 could be leaked for each block of executed module-level code if the
3971 interpreter slack mode is enabled This change deletes any implicitly
3973 object from the module-level code block. Lin Ming.
3975 Removed messages for successful predefined repair(s). The repair
3977 was considered too wordy. Now, messages are only unconditionally emitted
3979 the return object cannot be repaired. Existing messages for successful
3980 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
3983 Example Code and Data Size: These are the sizes for the OS-independent
3984 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3985 debug version of the code includes the debug output trace mechanism and
3987 much larger code and data size.
3990 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
3991 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
3993 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
3994 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
3996 2) iASL Compiler/Disassembler and Tools:
3998 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4000 were no longer automatically removed at the termination of the compile.
4002 acpiexec: Implemented the -f option to specify default region fill value.
4003 This option specifies the value used to initialize buffers that simulate
4004 operation regions. Default value is zero. Useful for debugging problems
4006 depend on a specific initial value for a region or field.
4008 ----------------------------------------
4009 12 November 2009. Summary of changes for version 20091112:
4011 1) ACPI CA Core Subsystem:
4013 Implemented a post-order callback to AcpiWalkNamespace. The existing
4014 interface only has a pre-order callback. This change adds an additional
4015 parameter for a post-order callback which will be more useful for bus
4017 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4019 Modified the behavior of the operation region memory mapping cache for
4020 SystemMemory. Ensure that the memory mappings created for operation
4022 do not cross 4K page boundaries. Crossing a page boundary while mapping
4023 regions can cause kernel warnings on some hosts if the pages have
4025 attributes. Such regions are probably BIOS bugs, and this is the
4027 Linux BZ 14445. Lin Ming.
4029 Implemented an automatic repair for predefined methods that must return
4030 sorted lists. This change will repair (by sorting) packages returned by
4032 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4034 and do not contain NULL package elements. Adds one new file,
4035 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4037 Fixed a possible fault during predefined name validation if a return
4039 object contains NULL elements. Also adds a warning if a NULL element is
4040 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4042 include repair or removal of all such NULL elements where possible.
4044 Implemented additional module-level executable AML code support. This
4046 will execute module-level code that is not at the root of the namespace
4047 (under a Device object, etc.) at table load time. Module-level executable
4049 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4051 Implemented a new internal function to create Integer objects. This
4053 simplifies miscellaneous object creation code. ACPICA BZ 823.
4055 Reduced the severity of predefined repair messages, Warning to Info.
4057 the object was successfully repaired, a warning is too severe. Reduced to
4059 info message for now. These messages may eventually be changed to debug-
4063 Example Code and Data Size: These are the sizes for the OS-independent
4064 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4065 debug version of the code includes the debug output trace mechanism and
4067 much larger code and data size.
4070 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4071 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4073 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4074 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4076 2) iASL Compiler/Disassembler and Tools:
4078 iASL: Implemented Switch() with While(1) so that Break works correctly.
4080 change correctly implements the Switch operator with a surrounding
4082 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4084 iASL: Added a message if a package initializer list is shorter than
4086 length. Adds a new remark for a Package() declaration if an initializer
4088 exists, but is shorter than the declared length of the package. Although
4089 technically legal, this is probably a coding error and it is seen in the
4090 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4092 iASL: Fixed a problem where the compiler could fault after the maximum
4094 of errors was reached (200).
4096 acpixtract: Fixed a possible warning for pointer cast if the compiler
4098 level set very high.
4100 ----------------------------------------
4101 13 October 2009. Summary of changes for version 20091013:
4103 1) ACPI CA Core Subsystem:
4105 Fixed a problem where an Operation Region _REG method could be executed
4107 than once. If a custom address space handler is installed by the host
4109 the "initialize operation regions" phase of the ACPICA initialization,
4111 _REG methods for that address space could be executed twice. This change
4112 fixes the problem. ACPICA BZ 427. Lin Ming.
4114 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4115 invocation of "Scope(\)" is executed (change scope to root), one internal
4116 operand object was leaked. Lin Ming.
4118 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4119 return value is defined as a Field object in the AML, and the field
4120 size is less than or equal to the default width of an integer (32 or
4122 can incorrectly return an Integer instead of a Buffer. ACPICA now
4123 automatically repairs this problem. ACPICA BZ 810.
4125 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4127 "OEM Information" field is often incorrectly returned as an Integer with
4128 value zero if the field is not supported by the platform. This is due to
4130 ambiguity in the ACPI specification. The field should always be a string.
4131 ACPICA now automatically repairs this problem by returning a NULL string
4132 within the returned Package. ACPICA BZ 807.
4134 Example Code and Data Size: These are the sizes for the OS-independent
4135 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4136 debug version of the code includes the debug output trace mechanism and
4138 much larger code and data size.
4141 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4142 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4144 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4145 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4147 2) iASL Compiler/Disassembler and Tools:
4149 Disassembler: Fixed a problem where references to external symbols that
4150 contained one or more parent-prefixes (carats) were not handled
4152 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4154 Disassembler: Restructured the code so that all functions that handle
4155 external symbols are in a single module. One new file is added,
4158 AML Debugger: Added a max count argument for the Batch command (which
4159 executes multiple predefined methods within the namespace.)
4161 iASL: Updated the compiler documentation (User Reference.) Available at
4162 http://www.acpica.org/documentation/. ACPICA BZ 750.
4164 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4167 ----------------------------------------
4168 03 September 2009. Summary of changes for version 20090903:
4170 1) ACPI CA Core Subsystem:
4172 For Windows Vista compatibility, added the automatic execution of an _INI
4173 method located at the namespace root (\_INI). This method is executed at
4174 table load time. This support is in addition to the automatic execution
4176 \_SB._INI. Lin Ming.
4178 Fixed a possible memory leak in the interpreter for AML package objects
4180 the package initializer list is longer than the defined size of the
4182 This apparently can only happen if the BIOS changes the package size on
4184 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4185 interpreter will truncate the package to the defined size (and issue an
4187 message), but previously could leave the extra objects undeleted if they
4189 pre-created during the argument processing (such is the case if the
4191 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4193 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4194 This has been reported in the field. Previously, ACPICA would zero out
4196 buffer/string. Now, the operation is treated as a noop. Provides Windows
4197 compatibility. ACPICA BZ 803. Lin Ming.
4199 Removed an extraneous error message for ASL constructs of the form
4200 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4202 are seen in many BIOSs and are once again treated as NOOPs and no error
4204 emitted when they are encountered. ACPICA BZ 785.
4206 Fixed an extraneous warning message if a _DSM reserved method returns a
4207 Package object. _DSM can return any type of object, so validation on the
4208 return type cannot be performed. ACPICA BZ 802.
4210 Example Code and Data Size: These are the sizes for the OS-independent
4211 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4212 debug version of the code includes the debug output trace mechanism and
4214 much larger code and data size.
4217 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4218 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4220 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4221 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4223 2) iASL Compiler/Disassembler and Tools:
4225 iASL: Fixed a problem with the use of the Alias operator and Resource
4226 Templates. The correct alias is now constructed and no error is emitted.
4229 iASL: Implemented the -I option to specify additional search directories
4231 include files. Allows multiple additional search paths for include files.
4232 Directories are searched in the order specified on the command line
4234 the local directory is searched.) ACPICA BZ 800.
4236 iASL: Fixed a problem where the full pathname for include files was not
4237 emitted for warnings/errors. This caused the IDE support to not work
4238 properly. ACPICA BZ 765.
4240 iASL: Implemented the -@ option to specify a Windows-style response file
4241 containing additional command line options. ACPICA BZ 801.
4243 AcpiExec: Added support to load multiple AML files simultaneously (such
4246 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4247 pathname. These features allow all machine tables to be easily loaded and
4248 debugged together. ACPICA BZ 804.
4250 Disassembler: Added missing support for disassembly of HEST table Error
4254 ----------------------------------------
4255 30 July 2009. Summary of changes for version 20090730:
4257 The ACPI 4.0 implementation for ACPICA is complete with this release.
4259 1) ACPI CA Core Subsystem:
4261 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4262 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4264 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4266 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4268 have been some ACPI 4.0 changes to other existing tables. Split the large
4269 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4271 ACPI 4.0: Implemented predefined name validation for all new names. There
4273 31 new names in ACPI 4.0. The predefined validation module was split into
4275 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4277 Implemented support for so-called "module-level executable code". This is
4278 executable AML code that exists outside of any control method and is
4280 to be executed at table load time. Although illegal since ACPI 2.0, this
4282 of code still exists and is apparently still being created. Blocks of
4284 code are now detected and executed as intended. Currently, the code
4286 must exist under either an If, Else, or While construct; these are the
4287 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
4289 Implemented an automatic dynamic repair for predefined names that return
4290 nested Package objects. This applies to predefined names that are defined
4292 return a variable-length Package of sub-packages. If the number of sub-
4293 packages is one, BIOS code is occasionally seen that creates a simple
4295 package with no sub-packages. This code attempts to fix the problem by
4296 wrapping a new package object around the existing package. These methods
4298 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
4302 Fixed a regression introduced in 20090625 for the AcpiGetDevices
4304 The _HID/_CID matching was broken and no longer matched IDs correctly.
4308 Fixed a problem with AcpiReset where the reset would silently fail if the
4309 register was one of the protected I/O ports. AcpiReset now bypasses the
4311 validation mechanism. This may eventually be driven into the
4315 Fixed a regression related to the recent update of the AcpiRead/Write
4316 interfaces. A sleep/suspend could fail if the optional PM2 Control
4318 does not exist during an attempt to write the Bus Master Arbitration bit.
4319 (However, some hosts already delete the code that writes this bit, and
4321 code may in fact be obsolete at this date.) ACPICA BZ 799.
4323 Fixed a problem where AcpiTerminate could fault if inadvertently called
4325 in succession. ACPICA BZ 795.
4327 Example Code and Data Size: These are the sizes for the OS-independent
4328 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4329 debug version of the code includes the debug output trace mechanism and
4331 much larger code and data size.
4334 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4335 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4337 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4338 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4340 2) iASL Compiler/Disassembler and Tools:
4342 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
4343 changes to existing tables. ACPICA BZ 775.
4345 ----------------------------------------
4346 25 June 2009. Summary of changes for version 20090625:
4348 The ACPI 4.0 Specification was released on June 16 and is available at
4349 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
4350 continue for the next few releases.
4352 1) ACPI CA Core Subsystem:
4354 ACPI 4.0: Implemented interpreter support for the IPMI operation region
4355 address space. Includes support for bi-directional data buffers and an
4357 address space handler (to be installed by an IPMI device driver.) ACPICA
4361 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
4363 support in both the header files and the disassembler.
4365 Completed a major update for the AcpiGetObjectInfo external interface.
4367 - Support for variable, unlimited length HID, UID, and CID strings.
4368 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
4370 - Call the _SxW power methods on behalf of a device object.
4371 - Determine if a device is a PCI root bridge.
4372 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
4373 These changes will require an update to all callers of this interface.
4375 the updated ACPICA Programmer Reference for details. One new source file
4377 been added - utilities/utids.c. ACPICA BZ 368, 780.
4379 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
4380 transfers. The Value parameter has been extended from 32 bits to 64 bits
4382 order to support new ACPI 4.0 tables. These changes will require an
4385 all callers of these interfaces. See the ACPICA Programmer Reference for
4386 details. ACPICA BZ 768.
4388 Fixed several problems with AcpiAttachData. The handler was not invoked
4390 the host node was deleted. The data sub-object was not automatically
4392 when the host node was deleted. The interface to the handler had an
4394 parameter, this was removed. ACPICA BZ 778.
4396 Enhanced the function that dumps ACPI table headers. All non-printable
4397 characters in the string fields are now replaced with '?' (Signature,
4399 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
4400 these fields are occasionally seen in the field. ACPICA BZ 788.
4402 Fixed a problem with predefined method repair code where the code that
4403 attempts to repair/convert an object of incorrect type is only executed
4405 the first time the predefined method is called. The mechanism that
4407 warnings on subsequent calls was interfering with the repair mechanism.
4410 Fixed a possible memory leak in the predefined validation/repair code
4413 buffer is automatically converted to an expected string object.
4415 Removed obsolete 16-bit files from the distribution and from the current
4417 tree head. ACPICA BZ 776.
4419 Example Code and Data Size: These are the sizes for the OS-independent
4420 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4421 debug version of the code includes the debug output trace mechanism and
4423 much larger code and data size.
4426 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4427 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4429 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4430 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4432 2) iASL Compiler/Disassembler and Tools:
4434 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
4435 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
4437 ACPI 4.0: iASL - implemented compile-time validation support for all new
4438 predefined names and control methods (31 total). ACPICA BZ 769.
4440 ----------------------------------------
4441 21 May 2009. Summary of changes for version 20090521:
4443 1) ACPI CA Core Subsystem:
4445 Disabled the preservation of the SCI enable bit in the PM1 control
4447 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
4450 a "preserved" bit - "OSPM always preserves this bit position", section
4451 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
4452 because the bit needs to be explicitly set by the OS as a workaround. No
4453 machines fail if the bit is not preserved. Therefore, ACPICA no longer
4454 attempts to preserve this bit.
4456 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
4457 incorrectly formed _PRT package could cause a fault. Added validation to
4458 ensure that each package element is actually a sub-package.
4460 Implemented a new interface to install or override a single control
4462 AcpiInstallMethod. This interface is useful when debugging in order to
4464 an existing method or to install a missing method without having to
4466 the entire ACPI table. See the ACPICA Programmer Reference for use and
4467 examples. Lin Ming, Bob Moore.
4469 Fixed several reference count issues with the DdbHandle object that is
4470 created from a Load or LoadTable operator. Prevent premature deletion of
4472 object. Also, mark the object as invalid once the table has been
4474 This is needed because the handle itself may not be deleted after the
4476 unload, depending on whether it has been stored in a named object by the
4479 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
4480 mutexes of the same sync level are acquired but then not released in
4482 opposite order, the internally maintained Current Sync Level becomes
4484 and can cause subsequent execution errors. ACPICA BZ 471.
4486 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
4487 specification has been changed to make the SyncLevel for mutex objects
4489 useful. When releasing a mutex, the SyncLevel of the mutex must now be
4491 same as the current sync level. This makes more sense than the previous
4493 (SyncLevel less than or equal). This change updates the code to match the
4496 Fixed a problem with the local version of the AcpiOsPurgeCache function.
4498 (local) cache must be locked during all cache object deletions. Andrew
4501 Updated the Load operator to use operation region interfaces. This
4503 direct memory mapping with region access calls. Now, all region accesses
4505 through the installed region handler as they should.
4507 Simplified and optimized the NsGetNextNode function. Reduced parameter
4509 and reduced code for this frequently used function.
4511 Example Code and Data Size: These are the sizes for the OS-independent
4512 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4513 debug version of the code includes the debug output trace mechanism and
4515 much larger code and data size.
4518 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4519 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4521 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4522 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4524 2) iASL Compiler/Disassembler and Tools:
4526 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
4528 with sub-table disassembly and handling invalid sub-tables. Attempt
4530 after an invalid sub-table ID.
4532 ----------------------------------------
4533 22 April 2009. Summary of changes for version 20090422:
4535 1) ACPI CA Core Subsystem:
4537 Fixed a compatibility issue with the recently released I/O port
4539 mechanism. For windows compatibility, 1) On a port protection violation,
4540 simply ignore the request and do not return an exception (allow the
4542 method to continue execution.) 2) If only part of the request overlaps a
4543 protected port, read/write the individual ports that are not protected.
4547 Enhanced the execution of the ASL/AML BreakPoint operator so that it
4549 breaks into the AML debugger if the debugger is present. This matches the
4550 ACPI-defined behavior.
4552 Fixed several possible warnings related to the use of the configurable
4553 ACPI_THREAD_ID. This type can now be configured as either an integer or a
4554 pointer with no warnings. Also fixes several warnings in printf-like
4555 statements for the 64-bit build when the type is configured as a pointer.
4558 Fixed a number of possible warnings when compiling with gcc 4+ (depending
4560 warning options.) Examples include printf formats, aliasing, unused
4562 missing prototypes, missing switch default statements, use of non-ANSI
4563 library functions, use of non-ANSI constructs. See generate/unix/Makefile
4565 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
4567 Example Code and Data Size: These are the sizes for the OS-independent
4568 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4569 debug version of the code includes the debug output trace mechanism and
4571 much larger code and data size.
4574 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4575 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4577 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4578 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4580 2) iASL Compiler/Disassembler and Tools:
4582 iASL: Fixed a generation warning from Bison 2.3 and fixed several
4587 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
4589 correctly digest Windows/DOS formatted files (with CR/LF).
4591 iASL: Added a new option for "quiet mode" (-va) that produces only the
4592 compilation summary, not individual errors and warnings. Useful for large
4595 AcpiExec: Implemented a new option (-z) to enable a forced
4597 timeout that can be used to detect hang conditions during execution of
4599 code (includes both internal semaphores and AML-defined mutexes and
4602 Added new makefiles for the generation of acpica in a generic unix-like
4603 environment. These makefiles are intended to generate the acpica tools
4605 utilities from the original acpica git source tree structure.
4607 Test Suites: Updated and cleaned up the documentation files. Updated the
4608 copyrights to 2009, affecting all source files. Use the new version of
4610 with quiet mode. Increased the number of available semaphores in the
4612 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
4614 an alternate implementation of the semaphore timeout to allow aslts to
4615 execute fully on Cygwin.
4617 ----------------------------------------
4618 20 March 2009. Summary of changes for version 20090320:
4620 1) ACPI CA Core Subsystem:
4622 Fixed a possible race condition between AcpiWalkNamespace and dynamic
4624 unloads. Added a reader/writer locking mechanism to allow multiple
4626 namespace walks (readers), but block a dynamic table unload until it can
4628 exclusive write access to the namespace. This fixes a problem where a
4630 unload could (possibly catastrophically) delete the portion of the
4632 that is currently being examined by a walk. Adds a new file, utlock.c,
4634 implements the reader/writer lock mechanism. ACPICA BZ 749.
4636 Fixed a regression introduced in version 20090220 where a change to the
4638 handling could cause the ACPICA subsystem to access non-existent I/O
4641 Modified the handling of FADT register and table (FACS/DSDT) addresses.
4643 FADT can contain both 32-bit and 64-bit versions of these addresses.
4644 Previously, the 64-bit versions were favored, meaning that if both 32 and
4646 versions were valid, but not equal, the 64-bit version was used. This was
4647 found to cause some machines to fail. Now, in this case, the 32-bit
4649 is used instead. This now matches the Windows behavior.
4651 Implemented a new mechanism to protect certain I/O ports. Provides
4653 compatibility and protects the standard PC I/O ports from access via AML
4654 code. Adds a new file, hwvalid.c
4656 Fixed a possible extraneous warning message from the FADT support. The
4657 message warns of a 32/64 length mismatch between the legacy and GAS
4658 definitions for a register.
4660 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
4662 made obsolete by the port protection mechanism above. It was previously
4664 to validate the entire address range of an operation region, which could
4666 incorrect if the range included illegal ports, but fields within the
4667 operation region did not actually access those ports. Validation is now
4668 performed on a per-field basis instead of the entire region.
4670 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
4671 Ignored bits must be "preserved" according to the ACPI spec. Usually,
4673 means a read/modify/write when writing to the register. However, for
4675 registers, writing a one means clear the event. Writing a zero means
4677 the event (do not clear.) This behavior is clarified in the ACPI 4.0
4679 and the ACPICA code now simply always writes a zero to the ignored bit.
4681 Modified the handling of ignored bits for the PM1 A/B Control Registers.
4683 per the ACPI specification, for the control registers, preserve
4684 (read/modify/write) all bits that are defined as either reserved or
4687 Updated the handling of write-only bits in the PM1 A/B Control Registers.
4688 When reading the register, zero the write-only bits as per the ACPI spec.
4689 ACPICA BZ 443. Lin Ming.
4691 Removed "Linux" from the list of supported _OSI strings. Linux no longer
4692 wants to reply true to this request. The Windows strings are the only
4694 through the AML that are tested and known to work properly.
4697 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4698 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4700 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4701 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4703 2) iASL Compiler/Disassembler and Tools:
4705 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
4709 ----------------------------------------
4710 20 February 2009. Summary of changes for version 20090220:
4712 1) ACPI CA Core Subsystem:
4714 Optimized the ACPI register locking. Removed locking for reads from the
4716 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
4718 not required when reading the single-bit registers. The
4719 AcpiGetRegisterUnlocked function is no longer needed and has been
4721 This will improve performance for reads on these registers. ACPICA BZ
4724 Fixed the parameter validation for AcpiRead/Write. Now return
4725 AE_BAD_PARAMETER if the input register pointer is null, and
4728 the register has an address of zero. Previously, these cases simply
4730 AE_OK. For optional registers such as PM1B status/enable/control, the
4732 should check for a valid register address before calling. ACPICA BZ 748.
4734 Renamed the external ACPI bit register access functions. Renamed
4735 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
4736 functions. The new names are AcpiReadBitRegister and
4737 AcpiWriteBitRegister.
4738 Also, restructured the code for these functions by simplifying the code
4740 and condensing duplicate code to reduce code size.
4742 Added new functions to transparently handle the possibly split PM1 A/B
4743 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
4745 now handle the split registers for PM1 Status, Enable, and Control.
4750 Added a function to handle the PM1 control registers,
4751 AcpiHwWritePm1Control.
4752 This function writes both of the PM1 control registers (A/B). These
4754 are different than the PM1 A/B status and enable registers in that
4756 values can be written to the A/B registers. Most notably, the SLP_TYP
4758 can be different, as per the values returned from the _Sx predefined
4761 Removed an extra register write within AcpiHwClearAcpiStatus. This
4763 was writing an optional PM1B status register twice. The existing call to
4765 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
4767 register. ACPICA BZ 751.
4769 Split out the PM1 Status registers from the FADT. Added new globals for
4771 registers (A/B), similar to the way the PM1 Enable registers are handled.
4772 Instead of overloading the FADT Event Register blocks. This makes the
4774 clearer and less prone to error.
4776 Fixed the warning message for when the platform contains too many ACPI
4778 for the default size of the global root table data structure. The
4780 for the truncation value was incorrect.
4782 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
4783 obsolete macro, since it is now a simple reference to ->common.type.
4785 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
4787 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
4788 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
4789 simply SLEEP_TYPE. ACPICA BZ 754.
4791 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
4792 function is only needed on 64-bit host operating systems and is thus not
4793 included for 32-bit hosts.
4795 Debug output: print the input and result for invocations of the _OSI
4797 control method via the ACPI_LV_INFO debug level. Also, reduced some of
4799 verbosity of this debug level. Len Brown.
4801 Example Code and Data Size: These are the sizes for the OS-independent
4802 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4803 debug version of the code includes the debug output trace mechanism and
4805 much larger code and data size.
4808 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4809 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4811 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4812 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4814 2) iASL Compiler/Disassembler and Tools:
4816 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
4817 various legal performance profiles.
4819 ----------------------------------------
4820 23 January 2009. Summary of changes for version 20090123:
4822 1) ACPI CA Core Subsystem:
4824 Added the 2009 copyright to all module headers and signons. This affects
4825 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4826 the tools/utilities.
4828 Implemented a change to allow the host to override any ACPI table,
4830 dynamically loaded tables. Previously, only the DSDT could be replaced by
4832 host. With this change, the AcpiOsTableOverride interface is called for
4834 table found in the RSDT/XSDT during ACPICA initialization, and also
4836 a table is dynamically loaded via the AML Load operator.
4838 Updated FADT flag definitions, especially the Boot Architecture flags.
4840 Debugger: For the Find command, automatically pad the input ACPI name
4842 underscores if the name is shorter than 4 characters. This enables a
4844 with the actual namespace entry which is itself padded with underscores.
4846 Example Code and Data Size: These are the sizes for the OS-independent
4847 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4848 debug version of the code includes the debug output trace mechanism and
4850 much larger code and data size.
4853 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
4854 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
4856 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4857 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4859 2) iASL Compiler/Disassembler and Tools:
4861 Fix build error under Bison-2.4.
4863 Dissasembler: Enhanced FADT support. Added decoding of the Boot
4865 flags. Now decode all flags, regardless of the FADT version. Flag output
4866 includes the FADT version which first defined each flag.
4868 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
4870 DSDT). Windows only.
4872 ----------------------------------------
4873 04 December 2008. Summary of changes for version 20081204:
4875 1) ACPI CA Core Subsystem:
4877 The ACPICA Programmer Reference has been completely updated and revamped
4879 this release. This includes updates to the external interfaces, OSL
4880 interfaces, the overview sections, and the debugger reference.
4882 Several new ACPICA interfaces have been implemented and documented in the
4883 programmer reference:
4884 AcpiReset - Writes the reset value to the FADT-defined reset register.
4885 AcpiDisableAllGpes - Disable all available GPEs.
4886 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
4887 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
4888 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
4889 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
4890 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
4892 Most of the public ACPI hardware-related interfaces have been moved to a
4894 file, components/hardware/hwxface.c
4896 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
4897 register lengths within the FADT are now used, and the low level ACPI
4898 register access no longer hardcodes the ACPI register lengths. Given that
4899 there may be some risk in actually trusting the FADT register lengths, a
4901 time option was added to fall back to the default hardcoded lengths if
4903 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
4904 option is set to true for now, and a warning is issued if a suspicious
4906 register length is overridden with the default value.
4908 Fixed a reference count issue in NsRepairObject. This problem was
4910 in version 20081031 as part of a fix to repair Buffer objects within
4913 Added semaphore support to the Linux/Unix application OS-services layer
4914 (OSL). ACPICA BZ 448. Lin Ming.
4916 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
4918 be implemented in the OSL, or will binary semaphores be used instead.
4920 Example Code and Data Size: These are the sizes for the OS-independent
4921 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4922 debug version of the code includes the debug output trace mechanism and
4924 much larger code and data size.
4927 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
4928 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
4930 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
4931 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
4933 2) iASL Compiler/Disassembler and Tools:
4935 iASL: Completed the '-e' option to include additional ACPI tables in
4938 aid with disassembly and External statement generation. ACPICA BZ 742.
4942 iASL: Removed the "named object in while loop" error. The compiler cannot
4943 determine how many times a loop will execute. ACPICA BZ 730.
4945 Disassembler: Implemented support for FADT revision 2 (MS extension).
4949 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
4952 ----------------------------------------
4953 31 October 2008. Summary of changes for version 20081031:
4955 1) ACPI CA Core Subsystem:
4957 Restructured the ACPICA header files into public/private. acpi.h now
4959 only the "public" acpica headers. All other acpica headers are "private"
4961 should not be included by acpica users. One new file, accommon.h is used
4963 include the commonly used private headers for acpica code generation.
4965 plans include moving all private headers to a new subdirectory.
4967 Implemented an automatic Buffer->String return value conversion for
4968 predefined ACPI methods. For these methods (such as _BIF), added
4970 conversion for return objects that are required to be a String, but a
4972 was found instead. This can happen when reading string battery data from
4974 operation region, because it used to be difficult to convert the data
4976 buffer to string from within the ASL. Ensures that the host OS is
4978 with a valid null-terminated string. Linux BZ 11822.
4980 Updated the FACS waking vector interfaces. Split
4981 AcpiSetFirmwareWakingVector
4982 into two: one for the 32-bit vector, another for the 64-bit vector. This
4984 required because the host OS must setup the wake much differently for
4986 vector (real vs. protected mode, etc.) and the interface itself should
4989 deciding which vector to use. Also, eliminated the
4990 GetFirmwareWakingVector
4991 interface, as it served no purpose (only the firmware reads the vector,
4993 only writes the vector.) ACPICA BZ 731.
4995 Implemented a mechanism to escape infinite AML While() loops. Added a
4997 counter to force exit from AML While loops if the count becomes too
4999 This can occur in poorly written AML when the hardware does not respond
5000 within a while loop and the loop does not implement a timeout. The
5002 loop count is configurable. A new exception code is returned when a loop
5004 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5006 Optimized the execution of AML While loops. Previously, a control state
5007 object was allocated and freed for each execution of the loop. The
5008 optimization is to simply reuse the control state for each iteration.
5010 speeds up the raw loop execution time by about 5%.
5012 Enhanced the implicit return mechanism. For Windows compatibility, return
5014 implicit integer of value zero for methods that contain no executable
5016 Such methods are seen in the field as stubs (presumably), and can cause
5017 drivers to fail if they expect a return value. Lin Ming.
5019 Allow multiple backslashes as root prefixes in namepaths. In a fully
5020 qualified namepath, allow multiple backslash prefixes. This can happen
5022 is seen in the field) because of the use of a double-backslash in strings
5023 (since backslash is the escape character) causing confusion. ACPICA BZ
5027 Emit a warning if two different FACS or DSDT tables are discovered in the
5028 FADT. Checks if there are two valid but different addresses for the FACS
5030 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5032 Consolidated the method argument count validation code. Merged the code
5034 validates control method argument counts into the predefined validation
5035 module. Eliminates possible multiple warnings for incorrect argument
5038 Implemented ACPICA example code. Includes code for ACPICA initialization,
5039 handler installation, and calling a control method. Available at
5040 source/tools/examples.
5042 Added a global pointer for FACS table to simplify internal FACS access.
5044 the global pointer instead of using AcpiGetTableByIndex for each FACS
5046 This simplifies the code for the Global Lock and the Firmware Waking
5049 Example Code and Data Size: These are the sizes for the OS-independent
5050 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5051 debug version of the code includes the debug output trace mechanism and
5053 much larger code and data size.
5056 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5057 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5059 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5060 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5062 2) iASL Compiler/Disassembler and Tools:
5064 iASL: Improved disassembly of external method calls. Added the -e option
5066 allow the inclusion of additional ACPI tables to help with the
5069 method invocations and the generation of external declarations during the
5070 disassembly. Certain external method invocations cannot be disassembled
5071 properly without the actual declaration of the method. Use the -e option
5073 include the table where the external method(s) are actually declared.
5075 useful for disassembling SSDTs that make method calls back to the master
5076 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5078 -e dsdt.aml ssdt1.aml
5080 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5081 problem where the use of an alias within a namepath would result in a not
5082 found error or cause the compiler to fault. Also now allows forward
5083 references from the Alias operator itself. ACPICA BZ 738.
5085 ----------------------------------------
5086 26 September 2008. Summary of changes for version 20080926:
5088 1) ACPI CA Core Subsystem:
5090 Designed and implemented a mechanism to validate predefined ACPI methods
5092 objects. This code validates the predefined ACPI objects (objects whose
5094 start with underscore) that appear in the namespace, at the time they are
5095 evaluated. The argument count and the type of the returned object are
5096 validated against the ACPI specification. The purpose of this validation
5098 to detect problems with the BIOS-implemented predefined ACPI objects
5100 the results are returned to the ACPI-related drivers. Future enhancements
5102 include actual repair of incorrect return objects where possible. Two new
5103 files are nspredef.c and acpredef.h.
5105 Fixed a fault in the AML parser if a memory allocation fails during the
5107 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5109 Fixed an issue with implicit return compatibility. This change improves
5111 implicit return mechanism to be more compatible with the MS interpreter.
5113 Ming, ACPICA BZ 349.
5115 Implemented support for zero-length buffer-to-string conversions. Allow
5117 length strings during interpreter buffer-to-string conversions. For
5119 during the ToDecimalString and ToHexString operators, as well as implicit
5120 conversions. Fiodor Suietov, ACPICA BZ 585.
5122 Fixed two possible memory leaks in the error exit paths of
5123 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5125 similar in that they use a stack of state objects in order to eliminate
5126 recursion. The stack must be fully unwound and deallocated if an error
5127 occurs. Lin Ming. ACPICA BZ 383.
5129 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5131 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5132 Moore ACPICA BZ 442.
5134 Removed the obsolete version number in module headers. Removed the
5135 "$Revision" number that appeared in each module header. This version
5137 was useful under SourceSafe and CVS, but has no meaning under git. It is
5139 only incorrect, it could also be misleading.
5141 Example Code and Data Size: These are the sizes for the OS-independent
5142 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5143 debug version of the code includes the debug output trace mechanism and
5145 much larger code and data size.
5148 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5149 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5151 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5152 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5154 ----------------------------------------
5155 29 August 2008. Summary of changes for version 20080829:
5157 1) ACPI CA Core Subsystem:
5159 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5160 Reference. Changes include the elimination of cheating on the Object
5162 for the DdbHandle subtype, addition of a reference class field to
5163 differentiate the various reference types (instead of an AML opcode), and
5165 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5167 Reduce an error to a warning for an incorrect method argument count.
5168 Previously aborted with an error if too few arguments were passed to a
5169 control method via the external ACPICA interface. Now issue a warning
5171 and continue. Handles the case where the method inadvertently declares
5173 many arguments, but does not actually use the extra ones. Applies mainly
5175 the predefined methods. Lin Ming. Linux BZ 11032.
5177 Disallow the evaluation of named object types with no intrinsic value.
5179 AE_TYPE for objects that have no value and therefore evaluation is
5181 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5183 these types were allowed, but an exception would be generated at some
5185 during the evaluation. Now, the error is generated up front.
5187 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5188 (nsnames.c). Fixes a leak in the error exit path.
5190 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5192 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5194 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5197 Removed obsolete and/or unused exception codes from the acexcep.h header.
5198 There is the possibility that certain device drivers may be affected if
5200 use any of these exceptions.
5202 The ACPICA documentation has been added to the public git source tree,
5204 acpica/documents. Included are the ACPICA programmer reference, the iASL
5205 compiler reference, and the changes.txt release logfile.
5207 Example Code and Data Size: These are the sizes for the OS-independent
5208 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5209 debug version of the code includes the debug output trace mechanism and
5211 much larger code and data size.
5214 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5215 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5217 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5218 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5220 2) iASL Compiler/Disassembler and Tools:
5222 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5223 defines _SCP with 3 arguments. Previous versions defined it with only 1
5224 argument. iASL now allows both definitions.
5226 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5228 length subtables when disassembling ACPI tables. Also fixed a couple of
5229 errors where a full 16-bit table type field was not extracted from the
5233 acpisrc: Improve comment counting mechanism for generating source code
5234 statistics. Count first and last lines of multi-line comments as
5236 not comment lines. Handle Linux legal header in addition to standard
5240 ----------------------------------------
5242 29 July 2008. Summary of changes for version 20080729:
5244 1) ACPI CA Core Subsystem:
5246 Fix a possible deadlock in the GPE dispatch. Remove call to
5247 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5249 to acquire the GPE lock but can deadlock since the GPE lock is already
5251 at dispatch time. This code was introduced in version 20060831 as a
5253 to Linux BZ 6881 and has since been removed from Linux.
5255 Add a function to dereference returned reference objects. Examines the
5257 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5259 automatically dereferenced in an attempt to return something useful
5261 reference types cannot be converted into an external ACPI_OBJECT.)
5263 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5265 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5266 subtables for the MADT and one new subtable for the SRAT. Includes
5267 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5269 Specification, June 2008.
5271 Additional error checking for pathname utilities. Add error check after
5273 calls to AcpiNsGetPathnameLength. Add status return from
5274 AcpiNsBuildExternalPath and check after all calls. Add parameter
5276 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5278 Return status from the global init function AcpiUtGlobalInitialize. This
5280 used by both the kernel subsystem and the utilities such as iASL
5282 The function could possibly fail when the caches are initialized. Yang
5285 Add a function to decode reference object types to strings. Created for
5286 improved error messages.
5288 Improve object conversion error messages. Better error messages during
5290 conversion from internal to the external ACPI_OBJECT. Used for external
5292 to AcpiEvaluateObject.
5294 Example Code and Data Size: These are the sizes for the OS-independent
5295 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5296 debug version of the code includes the debug output trace mechanism and
5298 much larger code and data size.
5301 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5302 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5304 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5305 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5307 2) iASL Compiler/Disassembler and Tools:
5309 Debugger: fix a possible hang when evaluating non-methods. Fixes a
5311 introduced in version 20080701. If the object being evaluated (via
5313 command) is not a method, the debugger can hang while trying to obtain
5315 existent parameters.
5317 iASL: relax error for using reserved "_T_x" identifiers. These names can
5318 appear in a disassembled ASL file if they were emitted by the original
5319 compiler. Instead of issuing an error or warning and forcing the user to
5320 manually change these names, issue a remark instead.
5322 iASL: error if named object created in while loop. Emit an error if any
5324 object is created within a While loop. If allowed, this code will
5327 run-time error on the second iteration of the loop when an attempt is
5330 create the same named object twice. ACPICA bugzilla 730.
5332 iASL: Support absolute pathnames for include files. Add support for
5334 pathnames within the Include operator. previously, only relative
5338 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
5340 The ACPI spec requires one interrupt minimum. BZ 423
5342 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
5343 Handles the case for the Interrupt Resource Descriptor where
5344 the ResourceSource argument is omitted but ResourceSourceIndex
5345 is present. Now leave room for the Index. BZ 426
5347 iASL: Prevent error message if CondRefOf target does not exist. Fixes
5349 where an error message is emitted if the target does not exist. BZ 516
5351 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
5352 (get ACPI tables on Windows). This was apparently broken in version
5355 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
5357 the EOF happens immediately after the last table in the input file. Print
5358 completion message. Previously, no message was displayed in this case.
5360 ----------------------------------------
5361 01 July 2008. Summary of changes for version 20080701:
5363 0) Git source tree / acpica.org
5365 Fixed a problem where a git-clone from http would not transfer the entire
5368 1) ACPI CA Core Subsystem:
5370 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
5371 enable bit. Now performs a read-change-write of the enable register
5373 of simply writing out the cached enable mask. This will prevent
5375 enabling of GPEs if a rogue GPE is received during initialization (before
5377 handlers are installed.)
5379 Implemented a copy for dynamically loaded tables. Previously, dynamically
5380 loaded tables were simply mapped - but on some machines this memory is
5381 corrupted after suspend. Now copy the table to a local buffer. For the
5382 OpRegion case, added checksum verify. Use the table length from the table
5383 header, not the region length. For the Buffer case, use the table length
5384 also. Dennis Noordsij, Bob Moore. BZ 10734
5386 Fixed a problem where the same ACPI table could not be dynamically loaded
5388 unloaded more than once. Without this change, a table cannot be loaded
5390 once it has been loaded/unloaded one time. The current mechanism does not
5391 unregister a table upon an unload. During a load, if the same table is
5393 this no longer returns an exception. BZ 722
5395 Fixed a problem where the wrong descriptor length was calculated for the
5396 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
5398 are calculated as 12 bytes long, but the actual length in the internal
5399 descriptor is 16 because of the round-up to 8 on the 64-bit build.
5401 by Linn Crosetto. BZ 728
5403 Fixed a possible memory leak in the Unload operator. The DdbHandle
5405 by Load() did not have its reference count decremented during unload,
5407 to a memory leak. Lin Ming. BZ 727
5409 Fixed a possible memory leak when deleting thermal/processor objects. Any
5410 associated notify handlers (and objects) were not being deleted. Fiodor
5413 Fixed the ordering of the ASCII names in the global mutex table to match
5415 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
5417 Vegard Nossum. BZ 726
5419 Enhanced the AcpiGetObjectInfo interface to return the number of required
5420 arguments if the object is a control method. Added this call to the
5422 so the proper number of default arguments are passed to a method. This
5423 prevents a warning when executing methods from AcpiExec.
5425 Added a check for an invalid handle in AcpiGetObjectInfo. Return
5426 AE_BAD_PARAMETER if input handle is invalid. BZ 474
5428 Fixed an extraneous warning from exconfig.c on the 64-bit build.
5430 Example Code and Data Size: These are the sizes for the OS-independent
5431 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5432 debug version of the code includes the debug output trace mechanism and
5434 much larger code and data size.
5437 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5438 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5440 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5441 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5443 2) iASL Compiler/Disassembler and Tools:
5445 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
5446 resource descriptor names.
5448 iASL: Detect invalid ASCII characters in input (windows version). Removed
5450 "-CF" flag from the flex compile, enables correct detection of non-ASCII
5451 characters in the input. BZ 441
5453 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
5455 "result of operation not used" warning when the DDB handle returned from
5456 LoadTable is not used. The warning is not needed. BZ 590
5458 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
5461 pass address of table to the AML. Added option to disable OpRegion
5463 to allow creation of an OpRegion with a real address that was passed to
5465 All of this allows testing of the Load and Unload operators from
5468 Debugger: update tables command for unloaded tables. Handle unloaded
5470 and use the standard table header output routine.
5472 ----------------------------------------
5473 09 June 2008. Summary of changes for version 20080609:
5475 1) ACPI CA Core Subsystem:
5477 Implemented a workaround for reversed _PRT entries. A significant number
5479 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
5480 change dynamically detects and repairs this problem. Provides
5482 with MS ACPI. BZ 6859
5484 Simplified the internal ACPI hardware interfaces to eliminate the locking
5485 flag parameter from Register Read/Write. Added a new external interface,
5486 AcpiGetRegisterUnlocked.
5488 Fixed a problem where the invocation of a GPE control method could hang.
5490 was a regression introduced in 20080514. The new method argument count
5491 validation mechanism can enter an infinite loop when a GPE method is
5492 dispatched. Problem fixed by removing the obsolete code that passed GPE
5494 information to the notify handler via the control method parameter
5497 Fixed a problem where the _SST execution status was incorrectly returned
5499 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
5501 20080514. _SST is optional and a NOT_FOUND exception should never be
5504 Fixed a problem where a deleted object could be accessed from within the
5506 parser. This was a regression introduced in version 20080123 as a fix for
5508 Unload operator. Lin Ming. BZ 10669
5510 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
5512 and eliminated the use of a negative index in a loop. Operands are now
5513 displayed in the correct order, not backwards. This also fixes a
5515 introduced in 20080514 on 64-bit systems where the elimination of
5516 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
5519 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
5521 path did not delete a locally allocated structure.
5523 Updated definitions for the DMAR and SRAT tables to synchronize with the
5524 current specifications. Includes disassembler support.
5526 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
5527 loop termination value was used. Loop terminated on iteration early,
5529 one mutex. Linn Crosetto
5531 Example Code and Data Size: These are the sizes for the OS-independent
5532 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5533 debug version of the code includes the debug output trace mechanism and
5535 much larger code and data size.
5538 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5539 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5541 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5542 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5544 2) iASL Compiler/Disassembler and Tools:
5546 Disassembler: Implemented support for EisaId() within _CID objects. Now
5547 disassemble integer _CID objects back to EisaId invocations, including
5548 multiple integers within _CID packages. Includes single-step support for
5551 Disassembler: Added support for DMAR and SRAT table definition changes.
5553 ----------------------------------------
5554 14 May 2008. Summary of changes for version 20080514:
5556 1) ACPI CA Core Subsystem:
5558 Fixed a problem where GPEs were enabled too early during the ACPICA
5559 initialization. This could lead to "handler not installed" errors on some
5560 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
5562 ensures that all operation regions and devices throughout the namespace
5564 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
5566 Implemented a change to the enter sleep code. Moved execution of the _GTS
5567 method to just before setting sleep enable bit. The execution was moved
5569 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
5570 immediately before the SLP_EN bit is set, as per the ACPI specification.
5573 Implemented a fix to disable unknown GPEs (2nd version). Now always
5575 the GPE, even if ACPICA thinks that that it is already disabled. It is
5576 possible that the AML or some other code has enabled the GPE unbeknownst
5580 Fixed a problem with the Field operator where zero-length fields would
5582 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
5584 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
5586 Implemented a fix for the Load operator, now load the table at the
5588 root. This reverts a change introduced in version 20071019. The table is
5590 loaded at the namespace root even though this goes against the ACPI
5591 specification. This provides compatibility with other ACPI
5593 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
5596 Fixed a problem where ACPICA would not Load() tables with unusual
5598 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
5599 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
5600 Therefore, signature validation is worthless. Apparently MS ACPI accepts
5602 signatures, ACPICA must be compatible. BZ 10454.
5604 Fixed a possible negative array index in AcpiUtValidateException. Added
5606 fields to the exception string arrays to eliminate a -1 subtraction on
5610 Updated the debug tracking macros to reduce overall code and data size.
5611 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
5612 instead of pointers to static strings. Jan Beulich and Bob Moore.
5614 Implemented argument count checking in control method invocation via
5615 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
5617 many. This applies only to extern programmatic control method execution,
5619 method-to-method calls within the AML. Lin Ming.
5621 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
5623 longer needed, especially with the removal of 16-bit support. It was
5625 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
5628 32/64-bit platforms is required.
5630 Added the C const qualifier for appropriate string constants -- mostly
5631 MODULE_NAME and printf format strings. Jan Beulich.
5633 Example Code and Data Size: These are the sizes for the OS-independent
5634 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5635 debug version of the code includes the debug output trace mechanism and
5637 much larger code and data size.
5640 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5641 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5643 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5644 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5646 2) iASL Compiler/Disassembler and Tools:
5648 Implemented ACPI table revision ID validation in the disassembler. Zero
5650 always invalid. For DSDTs, the ID controls the interpreter integer width.
5652 means 32-bit and this is unusual. 2 or greater is 64-bit.
5654 ----------------------------------------
5655 21 March 2008. Summary of changes for version 20080321:
5657 1) ACPI CA Core Subsystem:
5659 Implemented an additional change to the GPE support in order to suppress
5660 spurious or stray GPEs. The AcpiEvDisableGpe function will now
5662 disable incoming GPEs that are neither enabled nor disabled -- meaning
5664 the GPE is unknown to the system. This should prevent future interrupt
5666 from that GPE. BZ 6217 (Zhang Rui)
5668 Fixed a problem where NULL package elements were not returned to the
5669 AcpiEvaluateObject interface correctly. The element was simply ignored
5670 instead of returning a NULL ACPI_OBJECT package element, potentially
5672 a buffer overflow and/or confusing the caller who expected a fixed number
5674 elements. BZ 10132 (Lin Ming, Bob Moore)
5676 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
5678 Qword), Field, BankField, and IndexField operators when invoked from
5680 an executing control method. In this case, these operators created
5682 nodes that were incorrectly left marked as permanent nodes instead of
5683 temporary nodes. This could cause a problem if there is race condition
5684 between an exiting control method and a running namespace walk. (Reported
5688 Fixed a problem where the CreateField and CreateXXXField operators would
5689 incorrectly allow duplicate names (the name of the field) with no
5693 Implemented several changes for Notify handling. Added support for new
5695 values (ACPI 2.0+) and improved the Notify debug output. Notify on
5696 PowerResource objects is no longer allowed, as per the ACPI
5698 (Bob Moore, Zhang Rui)
5700 All Reference Objects returned via the AcpiEvaluateObject interface are
5702 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
5704 NULL objects - either NULL package elements or unresolved named
5707 Fixed a problem where an extraneous debug message was produced for
5709 objects (when debugging enabled). The message "Package List length larger
5710 than NumElements count" is now produced in the correct case, and is now
5712 error message rather than a debug message. Added a debug message for the
5713 opposite case, where NumElements is larger than the Package List (the
5715 will be padded out with NULL elements as per the ACPI spec.)
5717 Implemented several improvements for the output of the ASL "Debug" object
5719 clarify and keep all data for a given object on one output line.
5721 Fixed two size calculation issues with the variable-length Start
5723 resource descriptor.
5725 Example Code and Data Size: These are the sizes for the OS-independent
5726 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5727 debug version of the code includes the debug output trace mechanism and
5729 a much larger code and data size.
5732 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5733 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5735 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5736 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5738 2) iASL Compiler/Disassembler and Tools:
5740 Fixed a problem with the use of the Switch operator where execution of
5742 containing method by multiple concurrent threads could cause an
5743 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
5744 actual Switch opcode, it must be simulated with local named temporary
5745 variables and if/else pairs. The solution chosen was to mark any method
5747 uses Switch as Serialized, thus preventing multiple thread entries. BZ
5750 ----------------------------------------
5751 13 February 2008. Summary of changes for version 20080213:
5753 1) ACPI CA Core Subsystem:
5755 Implemented another MS compatibility design change for GPE/Notify
5757 GPEs are now cleared/enabled asynchronously to allow all pending notifies
5759 complete first. It is expected that the OSL will queue the enable request
5760 behind all pending notify requests (may require changes to the local host
5762 in AcpiOsExecute). Alexey Starikovskiy.
5764 Fixed a problem where buffer and package objects passed as arguments to a
5765 control method via the external AcpiEvaluateObject interface could cause
5767 AE_AML_INTERNAL exception depending on the order and type of operators
5768 executed by the target control method.
5770 Fixed a problem where resource descriptor size optimization could cause a
5771 problem when a _CRS resource template is passed to a _SRS method. The
5773 resource template must use the same descriptors (with the same size) as
5774 returned from _CRS. This change affects the following resource
5776 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
5779 Fixed a problem where a CopyObject to RegionField, BankField, and
5781 objects did not perform an implicit conversion as it should. These types
5783 retain their initial type permanently as per the ACPI specification.
5785 a CopyObject to all other object types should not perform an implicit
5786 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
5788 Fixed a problem with the AcpiGetDevices interface where the mechanism to
5789 match device CIDs did not examine the entire list of available CIDs, but
5790 instead aborted on the first non-matching CID. Andrew Patterson.
5792 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
5794 inadvertently changed to return a 16-bit value instead of a 32-bit value,
5795 truncating the upper dword of a 64-bit value. This macro is only used to
5796 display debug output, so no incorrect calculations were made. Also,
5797 reimplemented the macro so that a 64-bit shift is not performed by
5798 inefficient compilers.
5800 Added missing va_end statements that should correspond with each va_start
5803 Example Code and Data Size: These are the sizes for the OS-independent
5804 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5805 debug version of the code includes the debug output trace mechanism and
5807 a much larger code and data size.
5810 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5811 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5813 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5814 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5816 2) iASL Compiler/Disassembler and Tools:
5818 Implemented full disassembler support for the following new ACPI tables:
5819 BERT, EINJ, and ERST. Implemented partial disassembler support for the
5820 complicated HEST table. These tables support the Windows Hardware Error
5821 Architecture (WHEA).
5823 ----------------------------------------
5824 23 January 2008. Summary of changes for version 20080123:
5826 1) ACPI CA Core Subsystem:
5828 Added the 2008 copyright to all module headers and signons. This affects
5829 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5830 the tools/utilities.
5832 Fixed a problem with the SizeOf operator when used with Package and
5834 objects. These objects have deferred execution for some arguments, and
5836 execution is now completed before the SizeOf is executed. This problem
5838 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
5842 Implemented an enhancement to the interpreter "slack mode". In the
5845 an explicit return or an implicitly returned object from the last
5847 opcode, a control method will now implicitly return an integer of value 0
5849 Microsoft compatibility. (Lin Ming) BZ 392
5851 Fixed a problem with the Load operator where an exception was not
5854 the case where the table is already loaded. (Lin Ming) BZ 463
5856 Implemented support for the use of DDBHandles as an Indexed Reference, as
5858 the ACPI spec. (Lin Ming) BZ 486
5860 Implemented support for UserTerm (Method invocation) for the Unload
5862 as per the ACPI spec. (Lin Ming) BZ 580
5864 Fixed a problem with the LoadTable operator where the OemId and
5866 input strings could cause unexpected failures if they were shorter than
5868 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
5870 Implemented support for UserTerm (Method invocation) for the Unload
5872 as per the ACPI spec. (Lin Ming) BZ 580
5874 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
5876 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
5878 Example Code and Data Size: These are the sizes for the OS-independent
5879 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5880 debug version of the code includes the debug output trace mechanism and
5882 a much larger code and data size.
5885 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
5886 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
5888 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5889 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5891 2) iASL Compiler/Disassembler and Tools:
5893 Implemented support in the disassembler for checksum validation on
5895 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
5897 header dump at the start of the disassembly.
5899 Implemented additional debugging information in the namespace listing
5901 created during compilation. In addition to the namespace hierarchy, the
5903 pathname to each namespace object is displayed.
5905 Fixed a problem with the disassembler where invalid ACPI tables could
5907 faults or infinite loops.
5909 Fixed an unexpected parse error when using the optional "parameter types"
5910 list in a control method declaration. (Lin Ming) BZ 397
5912 Fixed a problem where two External declarations with the same name did
5914 cause an error (Lin Ming) BZ 509
5916 Implemented support for full TermArgs (adding Argx, Localx and method
5917 invocation) for the ParameterData parameter to the LoadTable operator.
5921 ----------------------------------------
5922 19 December 2007. Summary of changes for version 20071219:
5924 1) ACPI CA Core Subsystem:
5926 Implemented full support for deferred execution for the TermArg string
5927 arguments for DataTableRegion. This enables forward references and full
5928 operand resolution for the three string arguments. Similar to
5930 deferred argument execution.) Lin Ming. BZ 430
5932 Implemented full argument resolution support for the BankValue argument
5934 BankField. Previously, only constants were supported, now any TermArg may
5936 used. Lin Ming BZ 387, 393
5938 Fixed a problem with AcpiGetDevices where the search of a branch of the
5939 device tree could be terminated prematurely. In accordance with the ACPI
5940 specification, the search down the current branch is terminated if a
5942 is both not present and not functional (instead of just not present.)
5946 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
5948 the underlying AML code changed the GPE enable registers. Now, any
5950 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
5952 instead of simply ignored. Rui Zhang.
5954 Fixed a problem with Index Fields where the Index register was
5956 limited to a maximum of 32 bits. Now any size may be used.
5958 Fixed a couple memory leaks associated with "implicit return" objects
5960 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
5962 Example Code and Data Size: These are the sizes for the OS-independent
5963 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5964 debug version of the code includes the debug output trace mechanism and
5966 a much larger code and data size.
5969 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
5970 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
5972 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
5973 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
5975 ----------------------------------------
5976 14 November 2007. Summary of changes for version 20071114:
5978 1) ACPI CA Core Subsystem:
5980 Implemented event counters for each of the Fixed Events, the ACPI SCI
5981 (interrupt) itself, and control methods executed. Named
5982 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
5984 should be useful for debugging and statistics.
5986 Implemented a new external interface, AcpiGetStatistics, to retrieve the
5987 contents of the various event counters. Returns the current values for
5988 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
5989 AcpiMethodCount. The interface can be expanded in the future if new
5991 are added. Device drivers should use this interface rather than access
5995 Fixed a problem with the FromBCD and ToBCD operators. With some
5997 the ShortDivide function worked incorrectly, causing problems with the
5999 functions with large input values. A truncation from 64-bit to 32-bit
6000 inadvertently occurred. Internal BZ 435. Lin Ming
6002 Fixed a problem with Index references passed as method arguments.
6004 passed as arguments to control methods were dereferenced immediately
6006 control was passed to the called method). The references are now
6008 passed directly to the called method. BZ 5389. Lin Ming
6010 Fixed a problem with CopyObject used in conjunction with the Index
6012 The reference was incorrectly dereferenced before the copy. The reference
6014 now correctly copied. BZ 5391. Lin Ming
6016 Fixed a problem with Control Method references within Package objects.
6018 references are now correctly generated. This completes the package
6019 construction overhaul that began in version 20071019.
6021 Example Code and Data Size: These are the sizes for the OS-independent
6022 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6023 debug version of the code includes the debug output trace mechanism and
6025 a much larger code and data size.
6028 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6029 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6031 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6032 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6035 2) iASL Compiler/Disassembler and Tools:
6037 The AcpiExec utility now installs handlers for all of the predefined
6038 Operation Region types. New types supported are: PCI_Config, CMOS, and
6041 Fixed a problem with the 64-bit version of AcpiExec where the extended
6043 bit) address fields for the DSDT and FACS within the FADT were not being
6044 used, causing truncation of the upper 32-bits of these addresses. Lin
6048 ----------------------------------------
6049 19 October 2007. Summary of changes for version 20071019:
6051 1) ACPI CA Core Subsystem:
6053 Fixed a problem with the Alias operator when the target of the alias is a
6054 named ASL operator that opens a new scope -- Scope, Device,
6056 Processor, and ThermalZone. In these cases, any children of the original
6057 operator could not be accessed via the alias, potentially causing
6059 AE_NOT_FOUND exceptions. (BZ 9067)
6061 Fixed a problem with the Package operator where all named references were
6062 created as object references and left otherwise unresolved. According to
6064 ACPI specification, a Package can only contain Data Objects or references
6066 control methods. The implication is that named references to Data Objects
6067 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6068 immediately upon package creation. This is the approach taken with this
6069 change. References to all other named objects (Methods, Devices, Scopes,
6070 etc.) are all now properly created as reference objects. (BZ 5328)
6072 Reverted a change to Notify handling that was introduced in version
6073 20070508. This version changed the Notify handling from asynchronous to
6074 fully synchronous (Device driver Notify handling with respect to the
6076 ASL operator). It was found that this change caused more problems than it
6077 solved and was removed by most users.
6079 Fixed a problem with the Increment and Decrement operators where the type
6081 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6084 Fixed a problem with the Load and LoadTable operators where the table
6085 location within the namespace was ignored. Instead, the table was always
6086 loaded into the root or current scope. Lin Ming.
6088 Fixed a problem with the Load operator when loading a table from a buffer
6089 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6091 Fixed a problem with the Debug object where a store of a DdbHandle
6093 object to the Debug object could cause a fault.
6095 Added a table checksum verification for the Load operator, in the case
6097 the load is from a buffer. (BZ 578).
6099 Implemented additional parameter validation for the LoadTable operator.
6101 length of the input strings SignatureString, OemIdString, and OemTableId
6103 now checked for maximum lengths. (BZ 582) Lin Ming.
6105 Example Code and Data Size: These are the sizes for the OS-independent
6106 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6107 debug version of the code includes the debug output trace mechanism and
6109 a much larger code and data size.
6112 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6113 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6115 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6116 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6119 2) iASL Compiler/Disassembler:
6121 Fixed a problem where if a single file was specified and the file did not
6122 exist, no error message was emitted. (Introduced with wildcard support in
6125 ----------------------------------------
6126 19 September 2007. Summary of changes for version 20070919:
6128 1) ACPI CA Core Subsystem:
6130 Designed and implemented new external interfaces to install and remove
6131 handlers for ACPI table-related events. Current events that are defined
6133 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6134 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6135 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6137 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6138 (acpi_serialized option on Linux) could cause some systems to hang during
6139 initialization. (Bob Moore) BZ 8171
6141 Fixed a problem where objects of certain types (Device, ThermalZone,
6142 Processor, PowerResource) can be not found if they are declared and
6143 referenced from within the same control method (Lin Ming) BZ 341
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: 78.3K Code, 17.0K Data, 95.3K Total
6153 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6155 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6156 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6159 2) iASL Compiler/Disassembler:
6161 Implemented support to allow multiple files to be compiled/disassembled
6164 single invocation. This includes command line wildcard support for both
6166 Windows and Unix versions of the compiler. This feature simplifies the
6167 disassembly and compilation of multiple ACPI tables in a single
6170 ----------------------------------------
6171 08 May 2007. Summary of changes for version 20070508:
6173 1) ACPI CA Core Subsystem:
6175 Implemented a Microsoft compatibility design change for the handling of
6177 Notify AML operator. Previously, notify handlers were dispatched and
6178 executed completely asynchronously in a deferred thread. The new design
6179 still executes the notify handlers in a different thread, but the
6181 thread that executed the Notify() now waits at a synchronization point
6183 the notify handler to complete. Some machines depend on a synchronous
6185 operator in order to operate correctly.
6187 Implemented support to allow Package objects to be passed as method
6188 arguments to the external AcpiEvaluateObject interface. Previously, this
6189 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6190 implemented since there were no reserved control methods that required it
6193 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6195 contained invalid non-zero values in reserved fields could cause later
6196 failures because these fields have meaning in later revisions of the
6198 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6200 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6202 Fixed a problem where the Global Lock handle was not properly updated if
6204 thread that acquired the Global Lock via executing AML code then
6206 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6210 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6211 could be corrupted if the interrupt being removed was at the head of the
6212 list. Reported by Linn Crosetto.
6214 Example Code and Data Size: These are the sizes for the OS-independent
6215 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6216 debug version of the code includes the debug output trace mechanism and
6218 a much larger code and data size.
6221 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6222 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6224 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6225 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6227 ----------------------------------------
6228 20 March 2007. Summary of changes for version 20070320:
6230 1) ACPI CA Core Subsystem:
6232 Implemented a change to the order of interpretation and evaluation of AML
6233 operand objects within the AML interpreter. The interpreter now evaluates
6234 operands in the order that they appear in the AML stream (and the
6235 corresponding ASL code), instead of in the reverse order (after the
6237 operand list has been parsed). The previous behavior caused several
6239 incompatibilities with the Microsoft AML interpreter as well as being
6240 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6242 Implemented a change to the ACPI Global Lock support. All interfaces to
6244 global lock now allow the same thread to acquire the lock multiple times.
6245 This affects the AcpiAcquireGlobalLock external interface to the global
6247 as well as the internal use of the global lock to support AML fields -- a
6248 control method that is holding the global lock can now simultaneously
6250 AML fields that require global lock protection. Previously, in both
6252 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6254 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6255 Controller. There is no change to the behavior of the AML Acquire
6257 as this can already be used to acquire a mutex multiple times by the same
6258 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6260 Fixed a problem where invalid objects could be referenced in the AML
6261 Interpreter after error conditions. During operand evaluation, ensure
6263 the internal "Return Object" field is cleared on error and only valid
6264 pointers are stored there. Caused occasional access to deleted objects
6266 resulted in "large reference count" warning messages. Valery Podrezov.
6268 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6270 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6273 Fixed an internal problem with the handling of result objects on the
6274 interpreter result stack. BZ 7872. Valery Podrezov.
6276 Removed obsolete code that handled the case where AML_NAME_OP is the
6278 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6279 7874. Valery Podrezov.
6281 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6284 remnant from the previously discontinued 16-bit support.
6286 Example Code and Data Size: These are the sizes for the OS-independent
6287 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6288 debug version of the code includes the debug output trace mechanism and
6290 a much larger code and data size.
6293 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6294 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6296 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6297 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6299 ----------------------------------------
6300 26 January 2007. Summary of changes for version 20070126:
6302 1) ACPI CA Core Subsystem:
6304 Added the 2007 copyright to all module headers and signons. This affects
6305 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6308 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
6309 during a table load. A bad pointer was passed in the case where the DSDT
6311 overridden, causing a fault in this case.
6313 Example Code and Data Size: These are the sizes for the OS-independent
6314 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6315 debug version of the code includes the debug output trace mechanism and
6317 a much larger code and data size.
6320 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6321 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6323 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6324 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6326 ----------------------------------------
6327 15 December 2006. Summary of changes for version 20061215:
6329 1) ACPI CA Core Subsystem:
6331 Support for 16-bit ACPICA has been completely removed since it is no
6333 necessary and it clutters the code. All 16-bit macros, types, and
6334 conditional compiles have been removed, cleaning up and simplifying the
6336 across the entire subsystem. DOS support is no longer needed since the
6337 bootable Linux firmware kit is now available.
6339 The handler for the Global Lock is now removed during AcpiTerminate to
6340 enable a clean subsystem restart, via the implementation of the
6341 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
6344 Implemented enhancements to the multithreading support within the
6346 to enable improved multithreading debugging and evaluation of the
6350 Debugger: Enhanced the Statistics/Memory command to emit the total
6352 memory used during the execution, as well as the maximum memory consumed
6354 each of the various object types. (Valery Podrezov)
6356 Example Code and Data Size: These are the sizes for the OS-independent
6357 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6358 debug version of the code includes the debug output trace mechanism and
6360 a much larger code and data size.
6363 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6364 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6366 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6367 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6370 2) iASL Compiler/Disassembler and Tools:
6372 AcpiExec: Implemented a new option (-m) to display full memory use
6373 statistics upon subsystem/program termination. (Valery Podrezov)
6375 ----------------------------------------
6376 09 November 2006. Summary of changes for version 20061109:
6378 1) ACPI CA Core Subsystem:
6380 Optimized the Load ASL operator in the case where the source operand is
6382 operation region. Simply map the operation region memory, instead of
6383 performing a bytewise read. (Region must be of type SystemMemory, see
6386 Fixed the Load ASL operator for the case where the source operand is a
6387 region field. A buffer object is also allowed as the source operand. BZ
6390 Fixed a problem where the Load ASL operator allowed the source operand to
6392 an operation region of any type. It is now restricted to regions of type
6393 SystemMemory, as per the ACPI specification. BZ 481
6395 Additional cleanup and optimizations for the new Table Manager code.
6397 AcpiEnable will now fail if all of the required ACPI tables are not
6399 (FADT, FACS, DSDT). BZ 477
6401 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
6403 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
6404 manually optimized to be aligned and will not work if it is byte-packed.
6406 Example Code and Data Size: These are the sizes for the OS-independent
6407 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6408 debug version of the code includes the debug output trace mechanism and
6410 a much larger code and data size.
6413 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6414 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6416 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6417 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6420 2) iASL Compiler/Disassembler and Tools:
6422 Fixed a problem where the presence of the _OSI predefined control method
6423 within complex expressions could cause an internal compiler error.
6425 AcpiExec: Implemented full region support for multiple address spaces.
6426 SpaceId is now part of the REGION object. BZ 429
6428 ----------------------------------------
6429 11 October 2006. Summary of changes for version 20061011:
6431 1) ACPI CA Core Subsystem:
6433 Completed an AML interpreter performance enhancement for control method
6434 execution. Previously a 2-pass parse/execution, control methods are now
6435 completely parsed and executed in a single pass. This improves overall
6436 interpreter performance by ~25%, reduces code size, and reduces CPU stack
6437 use. (Valery Podrezov + interpreter changes in version 20051202 that
6438 eliminated namespace loading during the pass one parse.)
6440 Implemented _CID support for PCI Root Bridge detection. If the _HID does
6442 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
6444 obtained and also checked for an ID match.
6446 Implemented additional support for the PCI _ADR execution: upsearch until
6448 device scope is found before executing _ADR. This allows PCI_Config
6449 operation regions to be declared locally within control methods
6453 Fixed a problem with a possible race condition between threads executing
6454 AcpiWalkNamespace and the AML interpreter. This condition was removed by
6455 modifying AcpiWalkNamespace to (by default) ignore all temporary
6457 entries created during any concurrent control method execution. An
6458 additional namespace race condition is known to exist between
6459 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
6462 Restructured the AML ParseLoop function, breaking it into several
6463 subfunctions in order to reduce CPU stack use and improve
6467 AcpiGetHandle: Fix for parameter validation to detect invalid
6469 of prefix handle and pathname. BZ 478
6471 Example Code and Data Size: These are the sizes for the OS-independent
6472 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6473 debug version of the code includes the debug output trace mechanism and
6475 a much larger code and data size.
6478 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6479 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6481 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6482 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6484 2) iASL Compiler/Disassembler and Tools:
6486 Ported the -g option (get local ACPI tables) to the new ACPICA Table
6488 to restore original behavior.
6490 ----------------------------------------
6491 27 September 2006. Summary of changes for version 20060927:
6493 1) ACPI CA Core Subsystem:
6495 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
6496 These functions now use a spinlock for mutual exclusion and the interrupt
6497 level indication flag is not needed.
6499 Fixed a problem with the Global Lock where the lock could appear to be
6500 obtained before it is actually obtained. The global lock semaphore was
6501 inadvertently created with one unit instead of zero units. (BZ 464)
6505 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
6507 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
6509 Example Code and Data Size: These are the sizes for the OS-independent
6510 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6511 debug version of the code includes the debug output trace mechanism and
6513 a much larger code and data size.
6516 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6517 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6519 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6520 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6523 2) iASL Compiler/Disassembler and Tools:
6525 Fixed a compilation problem with the pre-defined Resource Descriptor
6527 names where an "object does not exist" error could be incorrectly
6529 if the parent ResourceTemplate pathname places the template within a
6530 different namespace scope than the current scope. (BZ 7212)
6532 Fixed a problem where the compiler could hang after syntax errors
6534 in an ElseIf construct. (BZ 453)
6536 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
6537 operator. An incorrect output filename was produced when this parameter
6539 a null string (""). Now, the original input filename is used as the AML
6540 output filename, with an ".aml" extension.
6542 Implemented a generic batch command mode for the AcpiExec utility
6544 any AML debugger command) (Valery Podrezov).
6546 ----------------------------------------
6547 12 September 2006. Summary of changes for version 20060912:
6549 1) ACPI CA Core Subsystem:
6551 Enhanced the implementation of the "serialized mode" of the interpreter
6552 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
6553 specified, instead of creating a serialization semaphore per control
6555 the interpreter lock is simply no longer released before a blocking
6556 operation during control method execution. This effectively makes the AML
6557 Interpreter single-threaded. The overhead of a semaphore per-method is
6560 Fixed a regression where an error was no longer emitted if a control
6562 attempts to create 2 objects of the same name. This once again returns
6563 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
6565 will dynamically serialize the control method to possible prevent future
6568 Integrated a fix for a problem with PCI Express HID detection in the PCI
6569 Config Space setup procedure. (BZ 7145)
6571 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
6572 AcpiHwInitialize function - the FADT registers are now validated when the
6575 Added two new warnings during FADT verification - 1) if the FADT is
6577 than the largest known FADT version, and 2) if there is a mismatch
6580 32-bit block address and the 64-bit X counterpart (when both are non-
6583 Example Code and Data Size: These are the sizes for the OS-independent
6584 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6585 debug version of the code includes the debug output trace mechanism and
6587 a much larger code and data size.
6590 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6591 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6593 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6594 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6597 2) iASL Compiler/Disassembler and Tools:
6599 Fixed a problem with the implementation of the Switch() operator where
6601 temporary variable was declared too close to the actual Switch, instead
6603 at method level. This could cause a problem if the Switch() operator is
6604 within a while loop, causing an error on the second iteration. (BZ 460)
6606 Disassembler - fix for error emitted for unknown type for target of scope
6607 operator. Now, ignore it and continue.
6609 Disassembly of an FADT now verifies the input FADT and reports any errors
6610 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
6612 Disassembly of raw data buffers with byte initialization data now
6614 each output line with the current buffer offset.
6616 Disassembly of ASF! table now includes all variable-length data fields at
6617 the end of some of the subtables.
6619 The disassembler now emits a comment if a buffer appears to be a
6620 ResourceTemplate, but cannot be disassembled as such because the EndTag
6622 not appear at the very end of the buffer.
6624 AcpiExec - Added the "-t" command line option to enable the serialized
6626 of the AML interpreter.
6628 ----------------------------------------
6629 31 August 2006. Summary of changes for version 20060831:
6631 1) ACPI CA Core Subsystem:
6633 Miscellaneous fixes for the Table Manager:
6634 - Correctly initialize internal common FADT for all 64-bit "X" fields
6635 - Fixed a couple table mapping issues during table load
6636 - Fixed a couple alignment issues for IA64
6637 - Initialize input array to zero in AcpiInitializeTables
6638 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
6641 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
6643 immediately disabled to prevent the waking GPE from firing again and to
6644 prevent other wake GPEs from interrupting the wake process.
6646 Added the AcpiGpeCount global that tracks the number of processed GPEs,
6648 be used for debugging systems with a large number of ACPI interrupts.
6650 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
6651 both the ACPICA headers and the disassembler.
6653 Example Code and Data Size: These are the sizes for the OS-independent
6654 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6655 debug version of the code includes the debug output trace mechanism and
6657 a much larger code and data size.
6660 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6661 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6663 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6664 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6667 2) iASL Compiler/Disassembler and Tools:
6669 Disassembler support for the DMAR ACPI table.
6671 ----------------------------------------
6672 23 August 2006. Summary of changes for version 20060823:
6674 1) ACPI CA Core Subsystem:
6676 The Table Manager component has been completely redesigned and
6677 reimplemented. The new design is much simpler, and reduces the overall
6679 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
6681 now possible to obtain the ACPI tables very early during kernel
6682 initialization, even before dynamic memory management is initialized.
6683 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
6685 Obsolete ACPICA interfaces:
6687 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
6690 - AcpiLoadTable: Not needed.
6691 - AcpiUnloadTable: Not needed.
6693 New ACPICA interfaces:
6695 - AcpiInitializeTables: Must be called before the table manager can be
6697 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
6698 allocated memory after it becomes available.
6699 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
6703 Other ACPICA changes:
6705 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
6707 AcpiOsUnmapMemory to free this mapping.
6708 - AcpiGetTable returns the actual mapped table. The mapping is managed
6709 internally and must not be deleted by the caller. Use of this interface
6710 causes no additional dynamic memory allocation.
6711 - AcpiFindRootPointer: Support for physical addressing has been
6713 it appeared to be unused.
6714 - The interface to AcpiOsMapMemory has changed to be consistent with the
6715 other allocation interfaces.
6716 - The interface to AcpiOsGetRootPointer has changed to eliminate
6719 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
6721 bit platforms. Was previously 64 bits on all platforms.
6722 - The interface to the ACPI Global Lock acquire/release macros have
6724 slightly since ACPICA no longer keeps a local copy of the FACS with a
6725 constructed pointer to the actual global lock.
6727 Porting to the new table manager:
6729 - AcpiInitializeTables: Must be called once, and can be called anytime
6730 during the OS initialization process. It allows the host to specify an
6732 of memory to be used to store the internal version of the RSDT/XSDT (root
6733 table). This allows the host to access ACPI tables before memory
6735 is initialized and running.
6736 - AcpiReallocateRootTable: Can be called after memory management is
6738 to copy the root table to a dynamically allocated array, freeing up the
6739 scratch memory specified in the call to AcpiInitializeTables.
6740 - AcpiSubsystemInitialize: This existing interface is independent of the
6741 Table Manager, and does not have to be called before the Table Manager
6743 be used, it only must be called before the rest of ACPICA can be used.
6744 - ACPI Tables: Some changes have been made to the names and structure of
6746 actbl.h and actbl1.h header files and may require changes to existing
6748 For example, bitfields have been completely removed because of their lack
6750 portability across C compilers.
6751 - Update interfaces to the Global Lock acquire/release macros if local
6752 versions are used. (see acwin.h)
6754 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
6758 Example Code and Data Size: These are the sizes for the OS-independent
6759 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6760 debug version of the code includes the debug output trace mechanism and
6762 a much larger code and data size.
6765 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6766 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6768 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6769 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6772 2) iASL Compiler/Disassembler and Tools:
6774 No changes for this release.
6776 ----------------------------------------
6777 21 July 2006. Summary of changes for version 20060721:
6779 1) ACPI CA Core Subsystem:
6781 The full source code for the ASL test suite used to validate the iASL
6782 compiler and the ACPICA core subsystem is being released with the ACPICA
6783 source for the first time. The source is contained in a separate package
6785 consists of over 1100 files that exercise all ASL/AML operators. The
6787 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
6791 Completed a new design and implementation for support of the ACPI Global
6792 Lock. On the OS side, the global lock is now treated as a standard AML
6793 mutex. Previously, multiple OS threads could "acquire" the global lock
6794 simultaneously. However, this could cause the BIOS to be starved out of
6796 lock - especially in cases such as the Embedded Controller driver where
6797 there is a tight coupling between the OS and the BIOS.
6799 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
6800 The Global Lock interrupt handler no longer queues the execution of a
6801 separate thread to signal the global lock semaphore. Instead, the
6803 is signaled directly from the interrupt handler.
6805 Implemented support within the AML interpreter for package objects that
6806 contain a larger AML length (package list length) than the package
6808 count. In this case, the length of the package is truncated to match the
6809 package element count. Some BIOS code apparently modifies the package
6811 on the fly, and this change supports this behavior. Provides
6813 with the MS AML interpreter. (With assistance from Fiodor Suietov)
6815 Implemented a temporary fix for the BankValue parameter of a Bank Field
6817 support all constant values, now including the Zero and One opcodes.
6818 Evaluation of this parameter must eventually be converted to a full
6820 evaluation. A not-implemented error is now returned (temporarily) for
6822 constant values for this parameter.
6824 Fixed problem reports (Fiodor Suietov) integrated:
6825 - Fix for premature object deletion after CopyObject on Operation Region
6829 Example Code and Data Size: These are the sizes for the OS-independent
6830 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6831 debug version of the code includes the debug output trace mechanism and
6833 a much larger code and data size.
6836 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
6837 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
6839 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6840 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6843 2) iASL Compiler/Disassembler and Tools:
6845 No changes for this release.
6847 ----------------------------------------
6848 07 July 2006. Summary of changes for version 20060707:
6850 1) ACPI CA Core Subsystem:
6852 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
6853 that do not allow the initialization of address pointers within packed
6854 structures - even though the hardware itself may support misaligned
6855 transfers. Some of the debug data structures are packed by default to
6858 Added an error message for the case where AcpiOsGetThreadId() returns
6860 A non-zero value is required by the core ACPICA code to ensure the proper
6861 operation of AML mutexes and recursive control methods.
6863 The DSDT is now the only ACPI table that determines whether the AML
6864 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
6866 the hooks for per-table 32/64 switching have been removed from the code.
6868 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
6870 Fixed a possible leak of an OwnerID in the error path of
6871 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
6872 deletion to a single place in AcpiTbUninstallTable to correct possible
6874 when using the AcpiTbDeleteTablesByType interface (with assistance from
6877 Fixed a problem with Serialized control methods where the semaphore
6878 associated with the method could be over-signaled after multiple method
6881 Fixed two issues with the locking of the internal namespace data
6883 Both the Unload() operator and AcpiUnloadTable interface now lock the
6884 namespace during the namespace deletion associated with the table unload
6885 (with assistance from Linn Crosetto.)
6887 Fixed problem reports (Valery Podrezov) integrated:
6888 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
6890 Fixed problem reports (Fiodor Suietov) integrated:
6891 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
6892 - On Address Space handler deletion, needless deactivation call (BZ 374)
6893 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
6895 - Possible memory leak, Notify sub-objects of Processor, Power,
6898 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
6899 - Minimum Length of RSDT should be validated (BZ 379)
6900 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
6902 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
6906 Example Code and Data Size: These are the sizes for the OS-independent
6907 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6908 debug version of the code includes the debug output trace mechanism and
6910 a much larger code and data size.
6913 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
6914 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
6916 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6917 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6920 2) iASL Compiler/Disassembler and Tools:
6922 Fixed problem reports:
6923 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
6926 ----------------------------------------
6927 23 June 2006. Summary of changes for version 20060623:
6929 1) ACPI CA Core Subsystem:
6931 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
6932 allows the type to be customized to the host OS for improved efficiency
6933 (since a spinlock is usually a very small object.)
6935 Implemented support for "ignored" bits in the ACPI registers. According
6937 the ACPI specification, these bits should be preserved when writing the
6938 registers via a read/modify/write cycle. There are 3 bits preserved in
6940 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
6942 Implemented the initial deployment of new OSL mutex interfaces. Since
6944 host operating systems have separate mutex and semaphore objects, this
6945 feature was requested. The base code now uses mutexes (and the new mutex
6946 interfaces) wherever a binary semaphore was used previously. However, for
6947 the current release, the mutex interfaces are defined as macros to map
6949 to the existing semaphore interfaces. Therefore, no OSL changes are
6951 at this time. (See acpiosxf.h)
6953 Fixed several problems with the support for the control method SyncLevel
6954 parameter. The SyncLevel now works according to the ACPI specification
6956 in concert with the Mutex SyncLevel parameter, since the current
6958 is a property of the executing thread. Mutual exclusion for control
6960 is now implemented with a mutex instead of a semaphore.
6962 Fixed three instances of the use of the C shift operator in the bitfield
6963 support code (exfldio.c) to avoid the use of a shift value larger than
6965 target data width. The behavior of C compilers is undefined in this case
6967 can cause unpredictable results, and therefore the case must be detected
6969 avoided. (Fiodor Suietov)
6971 Added an info message whenever an SSDT or OEM table is loaded dynamically
6972 via the Load() or LoadTable() ASL operators. This should improve
6974 capability since it will show exactly what tables have been loaded
6976 the tables present in the RSDT/XSDT.)
6978 Example Code and Data Size: These are the sizes for the OS-independent
6979 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6980 debug version of the code includes the debug output trace mechanism and
6982 a much larger code and data size.
6985 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
6986 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
6988 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
6989 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
6992 2) iASL Compiler/Disassembler and Tools:
6994 No changes for this release.
6996 ----------------------------------------
6997 08 June 2006. Summary of changes for version 20060608:
6999 1) ACPI CA Core Subsystem:
7001 Converted the locking mutex used for the ACPI hardware to a spinlock.
7003 change should eliminate all problems caused by attempting to acquire a
7004 semaphore at interrupt level, and it means that all ACPICA external
7005 interfaces that directly access the ACPI hardware can be safely called
7007 interrupt level. OSL code that implements the semaphore interfaces should
7009 able to eliminate any workarounds for being called at interrupt level.
7011 Fixed a regression introduced in 20060526 where the ACPI device
7012 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7014 did not have an optional _INI method.
7016 Fixed an IndexField issue where a write to the Data Register should be
7017 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7021 Fixed problem reports (Valery Podrezov) integrated:
7022 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7024 Fixed problem reports (Fiodor Suietov) integrated:
7025 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7027 Removed four global mutexes that were obsolete and were no longer being
7030 Example Code and Data Size: These are the sizes for the OS-independent
7031 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7032 debug version of the code includes the debug output trace mechanism and
7034 a much larger code and data size.
7037 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7038 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7040 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7041 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7044 2) iASL Compiler/Disassembler and Tools:
7046 Fixed a fault when using -g option (get tables from registry) on Windows
7049 Fixed problem reports integrated:
7050 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7051 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7053 - Global table revision override (-r) is ignored (BZ 413)
7055 ----------------------------------------
7056 26 May 2006. Summary of changes for version 20060526:
7058 1) ACPI CA Core Subsystem:
7060 Restructured, flattened, and simplified the internal interfaces for
7061 namespace object evaluation - resulting in smaller code, less CPU stack
7063 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7065 Fixed a problem with the CopyObject operator where the first parameter
7067 not typed correctly for the parser, interpreter, compiler, and
7069 Caused various errors and unexpected behavior.
7071 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7072 produced incorrect results with some C compilers. Since the behavior of C
7073 compilers when the shift value is larger than the datatype width is
7074 apparently not well defined, the interpreter now detects this condition
7076 simply returns zero as expected in all such cases. (BZ 395)
7078 Fixed problem reports (Valery Podrezov) integrated:
7079 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7080 - Allow interpreter to handle nested method declarations (BZ 5361)
7082 Fixed problem reports (Fiodor Suietov) integrated:
7083 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7085 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7087 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7088 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7089 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7090 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7091 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7092 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7093 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7095 - Status of the Global Initialization Handler call not used (BZ 366)
7096 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7098 Example Code and Data Size: These are the sizes for the OS-independent
7099 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7100 debug version of the code includes the debug output trace mechanism and
7102 a much larger code and data size.
7105 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7106 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7108 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7109 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7112 2) iASL Compiler/Disassembler and Tools:
7114 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7115 namespace identifiers with no collision with existing resource descriptor
7116 macro names. This provides compatibility with other ASL compilers and is
7117 most useful for disassembly/recompilation of existing tables without
7119 errors. (With assistance from Thomas Renninger)
7121 Disassembler: fixed an incorrect disassembly problem with the
7122 DataTableRegion and CopyObject operators. Fixed a possible fault during
7123 disassembly of some Alias operators.
7125 ----------------------------------------
7126 12 May 2006. Summary of changes for version 20060512:
7128 1) ACPI CA Core Subsystem:
7130 Replaced the AcpiOsQueueForExecution interface with a new interface named
7131 AcpiOsExecute. The major difference is that the new interface does not
7133 a Priority parameter, this appeared to be useless and has been replaced
7136 Type parameter. The Type tells the host what type of execution is being
7137 requested, such as global lock handler, notify handler, GPE handler, etc.
7138 This allows the host to queue and execute the request as appropriate for
7140 request type, possibly using different work queues and different
7142 for the various request types. This enables fixes for multithreading
7143 deadlock problems such as BZ #5534, and will require changes to all
7145 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7147 Fixed a possible memory leak associated with the support for the so-
7149 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7152 Fixed a problem with the Load() operator where a table load from an
7153 operation region could overwrite an internal table buffer by up to 7
7155 and cause alignment faults on IPF systems. (With assistance from Luming
7158 Example Code and Data Size: These are the sizes for the OS-independent
7159 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7160 debug version of the code includes the debug output trace mechanism and
7162 a much larger code and data size.
7165 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7166 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7168 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7169 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7173 2) iASL Compiler/Disassembler and Tools:
7175 Disassembler: Implemented support to cross reference the internal
7177 and automatically generate ASL External() statements for symbols not
7179 within the current table being disassembled. This will simplify the
7180 disassembly and recompilation of interdependent tables such as SSDTs
7182 these statements will no longer have to be added manually.
7184 Disassembler: Implemented experimental support to automatically detect
7185 invocations of external control methods and generate appropriate
7187 statements. This is problematic because the AML cannot be correctly
7189 until the number of arguments for each control method is known.
7191 standalone method invocations and invocations as the source operand of a
7192 Store() statement are supported.
7194 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7195 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7196 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7197 more readable and likely closer to the original ASL source.
7199 ----------------------------------------
7200 21 April 2006. Summary of changes for version 20060421:
7202 1) ACPI CA Core Subsystem:
7204 Removed a device initialization optimization introduced in 20051216 where
7205 the _STA method was not run unless an _INI was also present for the same
7206 device. This optimization could cause problems because it could allow
7208 methods to be run within a not-present device subtree. (If a not-present
7209 device had no _INI, _STA would not be run, the not-present status would
7211 be discovered, and the children of the device would be incorrectly
7214 Implemented a new _STA optimization where namespace subtrees that do not
7215 contain _INI are identified and ignored during device initialization.
7216 Selectively running _STA can significantly improve boot time on large
7217 machines (with assistance from Len Brown.)
7219 Implemented support for the device initialization case where the returned
7220 _STA flags indicate a device not-present but functioning. In this case,
7222 is not run, but the device children are examined for presence, as per the
7225 Implemented an additional change to the IndexField support in order to
7226 conform to MS behavior. The value written to the Index Register is not
7227 simply a byte offset, it is a byte offset in units of the access width of
7228 the parent Index Field. (Fiodor Suietov)
7230 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7231 interface is called during the creation of all AML operation regions, and
7232 allows the host OS to exert control over what addresses it will allow the
7233 AML code to access. Operation Regions whose addresses are disallowed will
7234 cause a runtime exception when they are actually accessed (will not
7236 or abort table loading.) See oswinxf or osunixxf for an example
7239 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7240 interface allows the host OS to match the various "optional"
7241 interface/behavior strings for the _OSI predefined control method as
7242 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7243 for an example implementation.
7245 Restructured and corrected various problems in the exception handling
7247 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7248 (with assistance from Takayoshi Kochi.)
7250 Modified the Linux source converter to ignore quoted string literals
7252 converting identifiers from mixed to lower case. This will correct
7254 with the disassembler and other areas where such strings must not be
7257 The ACPI_FUNCTION_* macros no longer require quotes around the function
7258 name. This allows the Linux source converter to convert the names, now
7260 the converter ignores quoted strings.
7262 Example Code and Data Size: These are the sizes for the OS-independent
7263 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7264 debug version of the code includes the debug output trace mechanism and
7266 a much larger code and data size.
7270 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7271 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7273 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7274 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7277 2) iASL Compiler/Disassembler and Tools:
7279 Implemented 3 new warnings for iASL, and implemented multiple warning
7283 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7285 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7286 check for the possible timeout, a warning is issued.
7288 2) Useless operators: If an ASL operator does not specify an optional
7290 operand and it also does not use the function return value from the
7291 operator, a warning is issued since the operator effectively does
7294 3) Unreferenced objects: If a namespace object is created, but never
7295 referenced, a warning is issued. This is a warning level 2 since there
7297 cases where this is ok, such as when a secondary table is loaded that
7299 the unreferenced objects. Even so, care is taken to only flag objects
7301 don't look like they will ever be used. For example, the reserved methods
7302 (starting with an underscore) are usually not referenced because it is
7303 expected that the OS will invoke them.
7305 ----------------------------------------
7306 31 March 2006. Summary of changes for version 20060331:
7308 1) ACPI CA Core Subsystem:
7310 Implemented header file support for the following additional ACPI tables:
7311 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
7313 all current and known ACPI tables are now defined in the ACPICA headers
7315 are available for use by device drivers and other software.
7317 Implemented support to allow tables that contain ACPI names with invalid
7318 characters to be loaded. Previously, this would cause the table load to
7319 fail, but since there are several known cases of such tables on existing
7320 machines, this change was made to enable ACPI support for them. Also,
7322 matches the behavior of the Microsoft ACPI implementation.
7324 Fixed a couple regressions introduced during the memory optimization in
7326 20060317 release. The namespace node definition required additional
7327 reorganization and an internal datatype that had been changed to 8-bit
7329 restored to 32-bit. (Valery Podrezov)
7331 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
7332 could be passed through to AcpiOsReleaseObject which is unexpected. Such
7333 null pointers are now trapped and ignored, matching the behavior of the
7334 previous implementation before the deployment of AcpiOsReleaseObject.
7335 (Valery Podrezov, Fiodor Suietov)
7337 Fixed a memory mapping leak during the deletion of a SystemMemory
7339 region where a cached memory mapping was not deleted. This became a
7340 noticeable problem for operation regions that are defined within
7342 used control methods. (Dana Meyers)
7344 Reorganized the ACPI table header files into two main files: one for the
7345 ACPI tables consumed by the ACPICA core, and another for the
7347 ACPI tables that are consumed by the drivers and other software. The
7349 FADT definitions were merged into one common section and three different
7350 tables (ACPI 1.0, 1.0+, and 2.0)
7352 Example Code and Data Size: These are the sizes for the OS-independent
7353 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7354 debug version of the code includes the debug output trace mechanism and
7356 a much larger code and data size.
7359 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7360 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7362 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7363 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7366 2) iASL Compiler/Disassembler and Tools:
7368 Disassembler: Implemented support to decode and format all non-AML ACPI
7369 tables (tables other than DSDTs and SSDTs.) This includes the new tables
7370 added to the ACPICA headers, therefore all current and known ACPI tables
7374 Disassembler: The change to allow ACPI names with invalid characters also
7375 enables the disassembly of such tables. Invalid characters within names
7377 changed to '*' to make the name printable; the iASL compiler will still
7378 generate an error for such names, however, since this is an invalid ACPI
7381 Implemented an option for AcpiXtract (-a) to extract all tables found in
7383 input file. The default invocation extracts only the DSDTs and SSDTs.
7385 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
7386 makefile for the AcpiXtract utility.
7388 ----------------------------------------
7389 17 March 2006. Summary of changes for version 20060317:
7391 1) ACPI CA Core Subsystem:
7393 Implemented the use of a cache object for all internal namespace nodes.
7394 Since there are about 1000 static nodes in a typical system, this will
7395 decrease memory use for cache implementations that minimize per-
7397 overhead (such as a slab allocator.)
7399 Removed the reference count mechanism for internal namespace nodes, since
7401 was deemed unnecessary. This reduces the size of each namespace node by
7402 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
7404 and 32 bytes for the 64-bit case.
7406 Optimized several internal data structures to reduce object size on 64-
7408 platforms by packing data within the 64-bit alignment. This includes the
7409 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
7410 instances corresponding to the namespace objects.
7412 Added two new strings for the predefined _OSI method: "Windows 2001.1
7416 Split the allocation tracking mechanism out to a separate file, from
7417 utalloc.c to uttrack.c. This mechanism appears to be only useful for
7418 application-level code. Kernels may wish to not include uttrack.c in
7421 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
7423 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
7426 Code and Data Size: These are the sizes for the acpica.lib produced by
7428 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7430 driver or OSPM code. The debug version of the code includes the debug
7432 trace mechanism and has a much larger code and data size. Note that these
7433 values will vary depending on the efficiency of the compiler and the
7434 compiler options used during generation.
7437 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7438 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7440 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7441 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7444 2) iASL Compiler/Disassembler and Tools:
7446 Implemented an ANSI C version of the acpixtract utility. This version
7448 automatically extract the DSDT and all SSDTs from the input acpidump text
7449 file and dump the binary output to separate files. It can also display a
7450 summary of the input file including the headers for each table found and
7451 will extract any single ACPI table, with any signature. (See
7452 source/tools/acpixtract)
7454 ----------------------------------------
7455 10 March 2006. Summary of changes for version 20060310:
7457 1) ACPI CA Core Subsystem:
7459 Tagged all external interfaces to the subsystem with the new
7460 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
7462 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
7463 macro. The default definition is NULL.
7465 Added the ACPI_THREAD_ID type for the return value from
7467 This allows the host to define this as necessary to simplify kernel
7468 integration. The default definition is ACPI_NATIVE_UINT.
7470 Fixed two interpreter problems related to error processing, the deletion
7472 objects, and placing invalid pointers onto the internal operator result
7473 stack. BZ 6028, 6151 (Valery Podrezov)
7475 Increased the reference count threshold where a warning is emitted for
7477 reference counts in order to eliminate unnecessary warnings on systems
7479 large namespaces (especially 64-bit.) Increased the value from 0x400 to
7482 Due to universal disagreement as to the meaning of the 'c' in the
7484 function, the ACPI_MEM_CALLOCATE macro has been renamed to
7485 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
7486 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
7489 Code and Data Size: These are the sizes for the acpica.lib produced by
7491 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7493 driver or OSPM code. The debug version of the code includes the debug
7495 trace mechanism and has a much larger code and data size. Note that these
7496 values will vary depending on the efficiency of the compiler and the
7497 compiler options used during generation.
7500 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7501 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7503 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7504 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7507 2) iASL Compiler/Disassembler:
7509 Disassembler: implemented support for symbolic resource descriptor
7510 references. If a CreateXxxxField operator references a fixed offset
7513 resource descriptor, a name is assigned to the descriptor and the offset
7515 translated to the appropriate resource tag and pathname. The addition of
7516 this support brings the disassembled code very close to the original ASL
7517 source code and helps eliminate run-time errors when the disassembled
7519 is modified (and recompiled) in such a way as to invalidate the original
7522 Implemented support for a Descriptor Name as the last parameter to the
7524 Register() macro. This parameter was inadvertently left out of the ACPI
7525 specification, and will be added for ACPI 3.0b.
7527 Fixed a problem where the use of the "_OSI" string (versus the full path
7528 "\_OSI") caused an internal compiler error. ("No back ptr to op")
7530 Fixed a problem with the error message that occurs when an invalid string
7532 used for a _HID object (such as one with an embedded asterisk:
7534 The correct message is now displayed.
7536 ----------------------------------------
7537 17 February 2006. Summary of changes for version 20060217:
7539 1) ACPI CA Core Subsystem:
7541 Implemented a change to the IndexField support to match the behavior of
7543 Microsoft AML interpreter. The value written to the Index register is now
7545 byte offset, no longer an index based upon the width of the Data
7547 This should fix IndexField problems seen on some machines where the Data
7548 register is not exactly one byte wide. The ACPI specification will be
7549 clarified on this point.
7551 Fixed a problem where several resource descriptor types could overrun the
7552 internal descriptor buffer due to size miscalculation: VendorShort,
7553 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
7554 affect all platforms.
7556 Fixed a problem where individual resource descriptors were misaligned
7558 the internal buffer, causing alignment faults on IA64 platforms.
7560 Code and Data Size: These are the sizes for the acpica.lib produced by
7562 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7564 driver or OSPM code. The debug version of the code includes the debug
7566 trace mechanism and has a much larger code and data size. Note that these
7567 values will vary depending on the efficiency of the compiler and the
7568 compiler options used during generation.
7571 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7572 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7574 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7575 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7578 2) iASL Compiler/Disassembler:
7580 Implemented support for new reserved names: _WDG and _WED are Microsoft
7581 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
7582 defined method (Throttling Depth Limit.)
7584 Fixed a problem where a zero-length VendorShort or VendorLong resource
7585 descriptor was incorrectly emitted as a descriptor of length one.
7587 ----------------------------------------
7588 10 February 2006. Summary of changes for version 20060210:
7590 1) ACPI CA Core Subsystem:
7592 Removed a couple of extraneous ACPI_ERROR messages that appeared during
7593 normal execution. These became apparent after the conversion from
7596 Fixed a problem where the CreateField operator could hang if the BitIndex
7598 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
7600 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
7601 failed with an exception. This also fixes a couple of related RefOf and
7602 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
7604 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
7606 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
7610 Implemented a memory cleanup at the end of the execution of each
7612 of an AML While() loop, preventing the accumulation of outstanding
7614 (Valery Podrezov, BZ 5427)
7616 Eliminated a chunk of duplicate code in the object resolution code.
7620 Fixed several warnings during the 64-bit code generation.
7622 The AcpiSrc source code conversion tool now inserts one line of
7624 after an if() statement that is followed immediately by a comment,
7626 readability of the Linux code.
7628 Code and Data Size: The current and previous library sizes for the core
7629 subsystem are shown below. These are the code and data sizes for the
7630 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7632 values do not include any ACPI driver or OSPM code. The debug version of
7634 code includes the debug output trace mechanism and has a much larger code
7635 and data size. Note that these values will vary depending on the
7637 of the compiler and the compiler options used during generation.
7640 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7641 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7643 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7644 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7647 2) iASL Compiler/Disassembler:
7649 Fixed a problem with the disassembly of a BankField operator with a
7651 expression for the BankValue parameter.
7653 ----------------------------------------
7654 27 January 2006. Summary of changes for version 20060127:
7656 1) ACPI CA Core Subsystem:
7658 Implemented support in the Resource Manager to allow unresolved
7660 references within resource package objects for the _PRT method. This
7662 is in addition to the previously implemented unresolved reference support
7663 within the AML parser. If the interpreter slack mode is enabled, these
7664 unresolved references will be passed through to the caller as a NULL
7668 Implemented and deployed new macros and functions for error and warning
7669 messages across the subsystem. These macros are simpler and generate less
7670 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
7671 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
7672 macros remain defined to allow ACPI drivers time to migrate to the new
7675 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
7677 Acquire/Release Lock OSL interfaces.
7679 Fixed a problem where Alias ASL operators are sometimes not correctly
7680 resolved, in both the interpreter and the iASL compiler.
7682 Fixed several problems with the implementation of the
7683 ConcatenateResTemplate
7684 ASL operator. As per the ACPI specification, zero length buffers are now
7685 treated as a single EndTag. One-length buffers always cause a fatal
7686 exception. Non-zero length buffers that do not end with a full 2-byte
7688 cause a fatal exception.
7690 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
7691 interface. (With assistance from Thomas Renninger)
7693 Code and Data Size: The current and previous library sizes for the core
7694 subsystem are shown below. These are the code and data sizes for the
7695 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7697 values do not include any ACPI driver or OSPM code. The debug version of
7699 code includes the debug output trace mechanism and has a much larger code
7700 and data size. Note that these values will vary depending on the
7702 of the compiler and the compiler options used during generation.
7705 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7706 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7708 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7709 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7712 2) iASL Compiler/Disassembler:
7714 Fixed an internal error that was generated for any forward references to
7718 ----------------------------------------
7719 13 January 2006. Summary of changes for version 20060113:
7721 1) ACPI CA Core Subsystem:
7723 Added 2006 copyright to all module headers and signons. This affects
7724 virtually every file in the ACPICA core subsystem, iASL compiler, and the
7727 Enhanced the ACPICA error reporting in order to simplify user migration
7729 the non-debug version of ACPICA. Replaced all instances of the
7730 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
7732 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
7733 respectively. This preserves all error and warning messages in the non-
7735 version of the ACPICA code (this has been referred to as the "debug lite"
7736 option.) Over 200 cases were converted to create a total of over 380
7737 error/warning messages across the ACPICA code. This increases the code
7739 data size of the default non-debug version of the code somewhat (about
7741 but all error/warning reporting may be disabled if desired (and code
7742 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
7743 configuration option. The size of the debug version of ACPICA remains
7747 Fixed a memory leak within the AML Debugger "Set" command. One object was
7748 not properly deleted for every successful invocation of the command.
7750 Code and Data Size: The current and previous library sizes for the core
7751 subsystem are shown below. These are the code and data sizes for the
7752 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7754 values do not include any ACPI driver or OSPM code. The debug version of
7756 code includes the debug output trace mechanism and has a much larger code
7757 and data size. Note that these values will vary depending on the
7759 of the compiler and the compiler options used during generation.
7762 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7763 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7765 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7766 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7769 2) iASL Compiler/Disassembler:
7771 The compiler now officially supports the ACPI 3.0a specification that was
7772 released on December 30, 2005. (Specification is available at
7775 ----------------------------------------
7776 16 December 2005. Summary of changes for version 20051216:
7778 1) ACPI CA Core Subsystem:
7780 Implemented optional support to allow unresolved names within ASL Package
7781 objects. A null object is inserted in the package when a named reference
7782 cannot be located in the current namespace. Enabled via the interpreter
7783 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
7785 that contain such code.
7787 Implemented an optimization to the initialization sequence that can
7789 boot time. During ACPI device initialization, the _STA method is now run
7791 and only if the _INI method exists. The _STA method is used to determine
7793 the device is present; An _INI can only be run if _STA returns present,
7795 it is a waste of time to run the _STA method if the _INI does not exist.
7796 (Prototype and assistance from Dong Wei)
7798 Implemented use of the C99 uintptr_t for the pointer casting macros if it
7800 available in the current compiler. Otherwise, the default (void *) cast
7804 Fixed some possible memory leaks found within the execution path of the
7805 Break, Continue, If, and CreateField operators. (Valery Podrezov)
7807 Fixed a problem introduced in the 20051202 release where an exception is
7808 generated during method execution if a control method attempts to declare
7811 Moved resource descriptor string constants that are used by both the AML
7812 disassembler and AML debugger to the common utilities directory so that
7813 these components are independent.
7815 Implemented support in the AcpiExec utility (-e switch) to globally
7817 exceptions during control method execution (method is not aborted.)
7819 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
7822 Code and Data Size: The current and previous library sizes for the core
7823 subsystem are shown below. These are the code and data sizes for the
7824 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7826 values do not include any ACPI driver or OSPM code. The debug version of
7828 code includes the debug output trace mechanism and has a much larger code
7829 and data size. Note that these values will vary depending on the
7831 of the compiler and the compiler options used during generation.
7834 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7835 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
7837 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7838 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7841 2) iASL Compiler/Disassembler:
7843 Fixed a problem where a CPU stack overflow fault could occur if a
7845 method call was made from within a Return statement.
7847 ----------------------------------------
7848 02 December 2005. Summary of changes for version 20051202:
7850 1) ACPI CA Core Subsystem:
7852 Modified the parsing of control methods to no longer create namespace
7853 objects during the first pass of the parse. Objects are now created only
7854 during the execute phase, at the moment the namespace creation operator
7856 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
7858 should eliminate ALREADY_EXISTS exceptions seen on some machines where
7859 reentrant control methods are protected by an AML mutex. The mutex will
7861 correctly block multiple threads from attempting to create the same
7865 Increased the number of available Owner Ids for namespace object tracking
7866 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
7868 some machines with a large number of ACPI tables (either static or
7871 Fixed a problem with the AcpiExec utility where a fault could occur when
7873 -b switch (batch mode) is used.
7875 Enhanced the namespace dump routine to output the owner ID for each
7878 Code and Data Size: The current and previous library sizes for the core
7879 subsystem are shown below. These are the code and data sizes for the
7880 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7882 values do not include any ACPI driver or OSPM code. The debug version of
7884 code includes the debug output trace mechanism and has a much larger code
7885 and data size. Note that these values will vary depending on the
7887 of the compiler and the compiler options used during generation.
7890 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7891 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7893 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7894 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
7897 2) iASL Compiler/Disassembler:
7899 Fixed a parse error during compilation of certain Switch/Case constructs.
7901 simplify the parse, the grammar now allows for multiple Default
7903 and this error is now detected and flagged during the analysis phase.
7905 Disassembler: The disassembly now includes the contents of the original
7906 table header within a comment at the start of the file. This includes the
7907 name and version of the original ASL compiler.
7909 ----------------------------------------
7910 17 November 2005. Summary of changes for version 20051117:
7912 1) ACPI CA Core Subsystem:
7914 Fixed a problem in the AML parser where the method thread count could be
7915 decremented below zero if any errors occurred during the method parse
7917 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
7919 This also fixed a related regression with the mechanism that detects and
7920 corrects methods that cannot properly handle reentrancy (related to the
7921 deployment of the new OwnerId mechanism.)
7923 Eliminated the pre-parsing of control methods (to detect errors) during
7924 table load. Related to the problem above, this was causing unwind issues
7926 any errors occurred during the parse, and it seemed to be overkill. A
7928 load should not be aborted if there are problems with any single control
7929 method, thus rendering this feature rather pointless.
7931 Fixed a problem with the new table-driven resource manager where an
7933 buffer overflow could occur for small resource templates.
7935 Implemented a new external interface, AcpiGetVendorResource. This
7937 will find and return a vendor-defined resource descriptor within a _CRS
7939 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
7942 Removed the length limit (200) on string objects as per the upcoming ACPI
7943 3.0A specification. This affects the following areas of the interpreter:
7945 any implicit conversion of a Buffer to a String, 2) a String object
7947 of the ASL Concatentate operator, 3) the String object result of the ASL
7950 Fixed a problem in the Windows OS interface layer (OSL) where a
7952 on a semaphore object would incorrectly timeout. This allows the
7953 multithreading features of the AcpiExec utility to work properly under
7956 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
7957 the recently added file named "utresrc.c".
7959 Code and Data Size: The current and previous library sizes for the core
7960 subsystem are shown below. These are the code and data sizes for the
7961 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7963 values do not include any ACPI driver or OSPM code. The debug version of
7965 code includes the debug output trace mechanism and has a much larger code
7966 and data size. Note that these values will vary depending on the
7968 of the compiler and the compiler options used during generation.
7971 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
7972 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7974 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7975 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7978 2) iASL Compiler/Disassembler:
7980 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
7981 specification. For the iASL compiler, this means that string literals
7983 the source ASL can be of any length.
7985 Enhanced the listing output to dump the AML code for resource descriptors
7986 immediately after the ASL code for each descriptor, instead of in a block
7988 the end of the entire resource template.
7990 Enhanced the compiler debug output to dump the entire original parse tree
7991 constructed during the parse phase, before any transforms are applied to
7993 tree. The transformed tree is dumped also.
7995 ----------------------------------------
7996 02 November 2005. Summary of changes for version 20051102:
7998 1) ACPI CA Core Subsystem:
8000 Modified the subsystem initialization sequence to improve GPE support.
8002 GPE initialization has been split into two parts in order to defer
8004 of the _PRW methods (Power Resources for Wake) until after the hardware
8006 fully initialized and the SCI handler is installed. This allows the _PRW
8007 methods to access fields protected by the Global Lock. This will fix
8009 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8011 Converted the ACPI internal object disassemble and display code within
8013 AML debugger to fully table-driven operation, reducing code size and
8014 increasing maintainability.
8016 Fixed a regression with the ConcatenateResTemplate() ASL operator
8018 in the 20051021 release.
8020 Implemented support for "local" internal ACPI object types within the
8021 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8022 These local types include RegionFields, BankFields, IndexFields, Alias,
8026 Moved common AML resource handling code into a new file, "utresrc.c".
8028 code is shared by both the Resource Manager and the AML Debugger.
8030 Code and Data Size: The current and previous library sizes for the core
8031 subsystem are shown below. These are the code and data sizes for the
8032 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8034 values do not include any ACPI driver or OSPM code. The debug version of
8036 code includes the debug output trace mechanism and has a much larger code
8037 and data size. Note that these values will vary depending on the
8039 of the compiler and the compiler options used during generation.
8042 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8043 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8045 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8046 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8049 2) iASL Compiler/Disassembler:
8051 Fixed a problem with very large initializer lists (more than 4000
8053 for both Buffer and Package objects where the parse stack could overflow.
8055 Enhanced the pre-compile source code scan for non-ASCII characters to
8057 characters within comment fields. The scan is now always performed and is
8059 longer optional, detecting invalid characters within a source file
8060 immediately rather than during the parse phase or later.
8062 Enhanced the ASL grammar definition to force early reductions on all
8064 style grammar elements so that the overall parse stack usage is greatly
8065 reduced. This should improve performance and reduce the possibility of
8069 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8071 with the addition of a %expected statement, the compiler generates from
8072 source with no warnings.
8074 Fixed a possible segment fault in the disassembler if the input filename
8075 does not contain a "dot" extension (Thomas Renninger).
8077 ----------------------------------------
8078 21 October 2005. Summary of changes for version 20051021:
8080 1) ACPI CA Core Subsystem:
8082 Implemented support for the EM64T and other x86-64 processors. This
8083 essentially entails recognizing that these processors support non-aligned
8084 memory transfers. Previously, all 64-bit processors were assumed to lack
8085 hardware support for non-aligned transfers.
8087 Completed conversion of the Resource Manager to nearly full table-driven
8088 operation. Specifically, the resource conversion code (convert AML to
8089 internal format and the reverse) and the debug code to dump internal
8090 resource descriptors are fully table-driven, reducing code and data size
8092 improving maintainability.
8094 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8096 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8098 Alexey Starikovskiy)
8100 Implemented support within the resource conversion code for the Type-
8101 Specific byte within the various ACPI 3.0 *WordSpace macros.
8103 Fixed some issues within the resource conversion code for the type-
8105 flags for both Memory and I/O address resource descriptors. For Memory,
8106 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8107 TTP flags into two separate fields.
8109 Code and Data Size: The current and previous library sizes for the core
8110 subsystem are shown below. These are the code and data sizes for the
8111 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8113 values do not include any ACPI driver or OSPM code. The debug version of
8115 code includes the debug output trace mechanism and has a much larger code
8116 and data size. Note that these values will vary depending on the
8118 of the compiler and the compiler options used during generation.
8121 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8122 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8124 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8125 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8129 2) iASL Compiler/Disassembler:
8131 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8133 corresponding ResourceSource string was not also present in a resource
8134 descriptor declaration. This restriction caused problems with existing
8135 AML/ASL code that includes the Index byte without the string. When such
8137 was disassembled, it could not be compiled without modification. Further,
8138 the modified code created a resource template with a different size than
8140 original, breaking code that used fixed offsets into the resource
8144 Removed a recent feature of the disassembler to ignore a lone
8146 byte. This byte is now emitted if present so that the exact AML can be
8147 reproduced when the disassembled code is recompiled.
8149 Improved comments and text alignment for the resource descriptor code
8150 emitted by the disassembler.
8152 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8154 Register() resource descriptor.
8156 ----------------------------------------
8157 30 September 2005. Summary of changes for version 20050930:
8159 1) ACPI CA Core Subsystem:
8161 Completed a major overhaul of the Resource Manager code - specifically,
8162 optimizations in the area of the AML/internal resource conversion code.
8164 code has been optimized to simplify and eliminate duplicated code, CPU
8166 use has been decreased by optimizing function parameters and local
8167 variables, and naming conventions across the manager have been
8169 for clarity and ease of maintenance (this includes function, parameter,
8170 variable, and struct/typedef names.) The update may force changes in some
8171 driver code, depending on how resources are handled by the host OS.
8173 All Resource Manager dispatch and information tables have been moved to a
8174 single location for clarity and ease of maintenance. One new file was
8175 created, named "rsinfo.c".
8177 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8178 guarantee that the argument is not evaluated twice, making them less
8180 to macro side-effects. However, since there exists the possibility of
8181 additional stack use if a particular compiler cannot optimize them (such
8183 in the debug generation case), the original macros are optionally
8185 Note that some invocations of the return_VALUE macro may now cause size
8186 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8188 eliminate these. (From Randy Dunlap)
8190 Implemented a new mechanism to enable debug tracing for individual
8192 methods. A new external interface, AcpiDebugTrace, is provided to enable
8193 this mechanism. The intent is to allow the host OS to easily enable and
8194 disable tracing for problematic control methods. This interface can be
8195 easily exposed to a user or debugger interface if desired. See the file
8196 psxface.c for details.
8198 AcpiUtCallocate will now return a valid pointer if a length of zero is
8199 specified - a length of one is used and a warning is issued. This matches
8200 the behavior of AcpiUtAllocate.
8202 Code and Data Size: The current and previous library sizes for the core
8203 subsystem are shown below. These are the code and data sizes for the
8204 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8206 values do not include any ACPI driver or OSPM code. The debug version of
8208 code includes the debug output trace mechanism and has a much larger code
8209 and data size. Note that these values will vary depending on the
8211 of the compiler and the compiler options used during generation.
8214 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8215 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8217 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8218 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8221 2) iASL Compiler/Disassembler:
8223 A remark is issued if the effective compile-time length of a package or
8224 buffer is zero. Previously, this was a warning.
8226 ----------------------------------------
8227 16 September 2005. Summary of changes for version 20050916:
8229 1) ACPI CA Core Subsystem:
8231 Fixed a problem within the Resource Manager where support for the Generic
8232 Register descriptor was not fully implemented. This descriptor is now
8234 recognized, parsed, disassembled, and displayed.
8236 Completely restructured the Resource Manager code to utilize table-driven
8237 dispatch and lookup, eliminating many of the large switch() statements.
8239 reduces overall subsystem code size and code complexity. Affects the
8240 resource parsing and construction, disassembly, and debug dump output.
8242 Cleaned up and restructured the debug dump output for all resource
8243 descriptors. Improved readability of the output and reduced code size.
8245 Fixed a problem where changes to internal data structures caused the
8246 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8248 Code and Data Size: The current and previous library sizes for the core
8249 subsystem are shown below. These are the code and data sizes for the
8250 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8252 values do not include any ACPI driver or OSPM code. The debug version of
8254 code includes the debug output trace mechanism and has a much larger code
8255 and data size. Note that these values will vary depending on the
8257 of the compiler and the compiler options used during generation.
8260 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8261 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8263 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8264 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8267 2) iASL Compiler/Disassembler:
8269 Updated the disassembler to automatically insert an EndDependentFn()
8271 into the ASL stream if this macro is missing in the original AML code,
8272 simplifying compilation of the resulting ASL module.
8274 Fixed a problem in the disassembler where a disassembled ResourceSource
8275 string (within a large resource descriptor) was not surrounded by quotes
8277 not followed by a comma, causing errors when the resulting ASL module was
8278 compiled. Also, escape sequences within a ResourceSource string are now
8279 handled correctly (especially "\\")
8281 ----------------------------------------
8282 02 September 2005. Summary of changes for version 20050902:
8284 1) ACPI CA Core Subsystem:
8286 Fixed a problem with the internal Owner ID allocation and deallocation
8287 mechanisms for control method execution and recursive method invocation.
8288 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
8289 messages seen on some systems. Recursive method invocation depth is
8290 currently limited to 255. (Alexey Starikovskiy)
8292 Completely eliminated all vestiges of support for the "module-level
8293 executable code" until this support is fully implemented and debugged.
8295 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
8296 some systems that invoke this support.
8298 Fixed a problem within the resource manager code where the transaction
8300 for a 64-bit address descriptor were handled incorrectly in the type-
8303 Consolidated duplicate code within the address descriptor resource
8305 code, reducing overall subsystem code size.
8307 Fixed a fault when using the AML debugger "disassemble" command to
8308 disassemble individual control methods.
8310 Removed references to the "release_current" directory within the Unix
8313 Code and Data Size: The current and previous core subsystem library sizes
8314 are shown below. These are the code and data sizes for the acpica.lib
8315 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
8316 include any ACPI driver or OSPM code. The debug version of the code
8318 the debug output trace mechanism and has a much larger code and data
8320 Note that these values will vary depending on the efficiency of the
8322 and the compiler options used during generation.
8325 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8326 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8328 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8329 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8332 2) iASL Compiler/Disassembler:
8334 Implemented an error check for illegal duplicate values in the interrupt
8336 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
8339 Implemented error checking for the Irq() and IrqNoFlags() macros to
8341 too many values in the interrupt list (16 max) and invalid values in the
8344 The maximum length string literal within an ASL file is now restricted to
8345 200 characters as per the ACPI specification.
8347 Fixed a fault when using the -ln option (generate namespace listing).
8349 Implemented an error check to determine if a DescriptorName within a
8350 resource descriptor has already been used within the current scope.
8352 ----------------------------------------
8353 15 August 2005. Summary of changes for version 20050815:
8355 1) ACPI CA Core Subsystem:
8357 Implemented a full bytewise compare to determine if a table load request
8359 attempting to load a duplicate table. The compare is performed if the
8361 signatures and table lengths match. This will allow different tables with
8362 the same OEM Table ID and revision to be loaded - probably against the
8364 specification, but discovered in the field nonetheless.
8366 Added the changes.txt logfile to each of the zipped release packages.
8368 Code and Data Size: Current and previous core subsystem library sizes are
8369 shown below. These are the code and data sizes for the acpica.lib
8371 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8372 any ACPI driver or OSPM code. The debug version of the code includes the
8373 debug output trace mechanism and has a much larger code and data size.
8375 that these values will vary depending on the efficiency of the compiler
8377 the compiler options used during generation.
8380 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8381 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8383 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8384 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8387 2) iASL Compiler/Disassembler:
8389 Fixed a problem where incorrect AML code could be generated for Package
8390 objects if optimization is disabled (via the -oa switch).
8392 Fixed a problem with where incorrect AML code is generated for variable-
8393 length packages when the package length is not specified and the number
8395 initializer values is greater than 255.
8398 ----------------------------------------
8399 29 July 2005. Summary of changes for version 20050729:
8401 1) ACPI CA Core Subsystem:
8403 Implemented support to ignore an attempt to install/load a particular
8405 table more than once. Apparently there exists BIOS code that repeatedly
8406 attempts to load the same SSDT upon certain events. With assistance from
8407 Venkatesh Pallipadi.
8409 Restructured the main interface to the AML parser in order to correctly
8410 handle all exceptional conditions. This will prevent leakage of the
8412 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
8414 machines. With assistance from Alexey Starikovskiy.
8416 Support for "module level code" has been disabled in this version due to
8418 number of issues that have appeared on various machines. The support can
8420 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
8421 compilation. When the issues are fully resolved, the code will be enabled
8425 Modified the internal functions for debug print support to define the
8426 FunctionName parameter as a (const char *) for compatibility with
8428 built-in macros such as __FUNCTION__, etc.
8430 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
8432 Implemented support to display an object count summary for the AML
8434 commands Object and Methods.
8436 Code and Data Size: Current and previous core subsystem library sizes are
8437 shown below. These are the code and data sizes for the acpica.lib
8439 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8440 any ACPI driver or OSPM code. The debug version of the code includes the
8441 debug output trace mechanism and has a much larger code and data size.
8443 that these values will vary depending on the efficiency of the compiler
8445 the compiler options used during generation.
8448 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8449 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8451 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8452 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8455 2) iASL Compiler/Disassembler:
8457 Fixed a regression that appeared in the 20050708 version of the compiler
8458 where an error message was inadvertently emitted for invocations of the
8460 reserved control method.
8462 ----------------------------------------
8463 08 July 2005. Summary of changes for version 20050708:
8465 1) ACPI CA Core Subsystem:
8467 The use of the CPU stack in the debug version of the subsystem has been
8468 considerably reduced. Previously, a debug structure was declared in every
8469 function that used the debug macros. This structure has been removed in
8470 favor of declaring the individual elements as parameters to the debug
8471 functions. This reduces the cumulative stack use during nested execution
8473 ACPI function calls at the cost of a small increase in the code size of
8475 debug version of the subsystem. With assistance from Alexey Starikovskiy
8479 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
8480 headers to define a macro that will return the current function name at
8481 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
8483 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
8484 compiler-dependent header, the function name is saved on the CPU stack
8486 pointer per function.) This mechanism is used because apparently there
8487 exists no standard ANSI-C defined macro that that returns the function
8490 Redesigned and reimplemented the "Owner ID" mechanism used to track
8491 namespace objects created/deleted by ACPI tables and control method
8492 execution. A bitmap is now used to allocate and free the IDs, thus
8494 the wraparound problem present in the previous implementation. The size
8496 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
8499 Removed the UINT32_BIT and UINT16_BIT types that were used for the
8501 flag definitions within the headers for the predefined ACPI tables. These
8502 have been replaced by UINT8_BIT in order to increase the code portability
8504 the subsystem. If the use of UINT8 remains a problem, we may be forced to
8505 eliminate bitfields entirely because of a lack of portability.
8507 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
8509 is a frequently used function and this improvement increases the
8511 of the entire subsystem (Alexey Starikovskiy).
8513 Fixed several possible memory leaks and the inverse - premature object
8514 deletion (Alexey Starikovskiy).
8516 Code and Data Size: Current and previous core subsystem library sizes are
8517 shown below. These are the code and data sizes for the acpica.lib
8519 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8520 any ACPI driver or OSPM code. The debug version of the code includes the
8521 debug output trace mechanism and has a much larger code and data size.
8523 that these values will vary depending on the efficiency of the compiler
8525 the compiler options used during generation.
8528 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8529 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8531 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8532 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8534 ----------------------------------------
8535 24 June 2005. Summary of changes for version 20050624:
8537 1) ACPI CA Core Subsystem:
8539 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
8540 the host-defined cache object. This allows the OSL implementation to
8542 and type this object in any manner desired, simplifying the OSL
8543 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
8544 Linux, and should be defined in the OS-specific header file for other
8545 operating systems as required.
8547 Changed the interface to AcpiOsAcquireObject to directly return the
8548 requested object as the function return (instead of ACPI_STATUS.) This
8549 change was made for performance reasons, since this is the purpose of the
8550 interface in the first place. AcpiOsAcquireObject is now similar to the
8551 AcpiOsAllocate interface.
8553 Implemented a new AML debugger command named Businfo. This command
8555 information about all devices that have an associate _PRT object. The
8557 _HID, _UID, and _CID are displayed for these devices.
8559 Modified the initialization sequence in AcpiInitializeSubsystem to call
8561 OSL interface AcpiOslInitialize first, before any local initialization.
8563 change was required because the global initialization now calls OSL
8566 Enhanced the Dump command to display the entire contents of Package
8568 (including all sub-objects and their values.)
8570 Restructured the code base to split some files because of size and/or
8571 because the code logically belonged in a separate file. New files are
8573 below. All makefiles and project files included in the ACPI CA release
8576 utilities/utcache.c /* Local cache interfaces */
8577 utilities/utmutex.c /* Local mutex support */
8578 utilities/utstate.c /* State object support */
8579 interpreter/parser/psloop.c /* Main AML parse loop */
8581 Code and Data Size: Current and previous core subsystem library sizes are
8582 shown below. These are the code and data sizes for the acpica.lib
8584 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8585 any ACPI driver or OSPM code. The debug version of the code includes the
8586 debug output trace mechanism and has a much larger code and data size.
8588 that these values will vary depending on the efficiency of the compiler
8590 the compiler options used during generation.
8593 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8594 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8596 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8597 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8600 2) iASL Compiler/Disassembler:
8602 Fixed a regression introduced in version 20050513 where the use of a
8604 object within a Case() statement caused a compile time exception. The
8605 original behavior has been restored (a Match() operator is emitted.)
8607 ----------------------------------------
8608 17 June 2005. Summary of changes for version 20050617:
8610 1) ACPI CA Core Subsystem:
8612 Moved the object cache operations into the OS interface layer (OSL) to
8614 the host OS to handle these operations if desired (for example, the Linux
8615 OSL will invoke the slab allocator). This support is optional; the
8617 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
8619 code in the ACPI CA core. The new OSL interfaces are shown below. See
8620 utalloc.c for an example implementation, and acpiosxf.h for the exact
8621 interface definitions. With assistance from Alexey Starikovskiy.
8628 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
8630 and restore a flags parameter. This fits better with many OS lock models.
8631 Note: the current execution state (interrupt handler or not) is no longer
8632 passed to these interfaces. If necessary, the OSL must determine this
8634 by itself, a simple and fast operation. With assistance from Alexey
8637 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
8638 present if the revision of the RSDP was 2 or greater. According to the
8640 specification, the XSDT is optional in all cases, and the table manager
8641 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
8642 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
8646 Fixed an interpreter problem with the Mid() operator in the case of an
8648 string where the resulting output string is of zero length. It now
8650 returns a valid, null terminated string object instead of a string object
8651 with a null pointer.
8653 Fixed a problem with the control method argument handling to allow a
8655 to an Arg object that already contains an object of type Device. The
8657 object is now correctly overwritten. Previously, an error was returned.
8660 Enhanced the debugger Find command to emit object values in addition to
8662 found object pathnames. The output format is the same as the dump
8666 Enhanced the debugger Set command. It now has the ability to set the
8668 of any Named integer object in the namespace (Previously, only method
8670 and args could be set.)
8672 Code and Data Size: Current and previous core subsystem library sizes are
8673 shown below. These are the code and data sizes for the acpica.lib
8675 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8676 any ACPI driver or OSPM code. The debug version of the code includes the
8677 debug output trace mechanism and has a much larger code and data size.
8679 that these values will vary depending on the efficiency of the compiler
8681 the compiler options used during generation.
8684 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8685 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8687 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8688 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8691 2) iASL Compiler/Disassembler:
8693 Fixed a regression in the disassembler where if/else/while constructs
8695 output incorrectly. This problem was introduced in the previous release
8696 (20050526). This problem also affected the single-step disassembly in the
8699 Fixed a problem where compiling the reserved _OSI method would randomly
8701 rarely) produce compile errors.
8703 Enhanced the disassembler to emit compilable code in the face of
8705 AML resource descriptors. If the optional ResourceSourceIndex is present,
8706 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
8707 disassembly. Otherwise, the resulting code cannot be compiled without
8710 ----------------------------------------
8711 26 May 2005. Summary of changes for version 20050526:
8713 1) ACPI CA Core Subsystem:
8715 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
8716 the module level (not within a control method.) These opcodes are
8718 exactly once at the time the table is loaded. This type of code was legal
8720 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
8722 order to provide backwards compatibility with earlier BIOS
8724 This eliminates the "Encountered executable code at module level" warning
8725 that was previously generated upon detection of such code.
8727 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
8728 inadvertently be generated during the lookup of namespace objects in the
8729 second pass parse of ACPI tables and control methods. It appears that
8731 problem could occur during the resolution of forward references to
8735 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
8736 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
8737 allows the deadlock detection debug code to be compiled out in the normal
8738 case, improving mutex performance (and overall subsystem performance)
8741 Implemented a handful of miscellaneous fixes for possible memory leaks on
8742 error conditions and error handling control paths. These fixes were
8743 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
8745 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
8747 to prevent a fault in this error case.
8749 Code and Data Size: Current and previous core subsystem library sizes are
8750 shown below. These are the code and data sizes for the acpica.lib
8752 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8753 any ACPI driver or OSPM code. The debug version of the code includes the
8754 debug output trace mechanism and has a much larger code and data size.
8756 that these values will vary depending on the efficiency of the compiler
8758 the compiler options used during generation.
8761 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8762 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8764 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8765 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8768 2) iASL Compiler/Disassembler:
8770 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
8771 the module level (not within a control method.) These operators will be
8772 executed once at the time the table is loaded. This type of code was
8774 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
8775 compiler in order to provide backwards compatibility with earlier BIOS
8779 The ACPI integer width (specified via the table revision ID or the -r
8780 override, 32 or 64 bits) is now used internally during compile-time
8782 folding to ensure that constants are truncated to 32 bits if necessary.
8783 Previously, the revision ID value was only emitted in the AML table
8786 An error message is now generated for the Mutex and Method operators if
8788 SyncLevel parameter is outside the legal range of 0 through 15.
8790 Fixed a problem with the Method operator ParameterTypes list handling
8792 3.0). Previously, more than 2 types or 2 arguments generated a syntax
8794 The actual underlying implementation of method argument typechecking is
8795 still under development, however.
8797 ----------------------------------------
8798 13 May 2005. Summary of changes for version 20050513:
8800 1) ACPI CA Core Subsystem:
8802 Implemented support for PCI Express root bridges -- added support for
8804 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
8806 The interpreter now automatically truncates incoming 64-bit constants to
8808 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
8810 also affects the iASL compiler constant folding. (Note: as per below, the
8811 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
8813 Fixed a problem where string and buffer objects with "static" pointers
8814 (pointers to initialization data within an ACPI table) were not handled
8815 consistently. The internal object copy operation now always copies the
8817 to a newly allocated buffer, regardless of whether the source object is
8820 Fixed a problem with the FromBCD operator where an implicit result
8821 conversion was improperly performed while storing the result to the
8823 operand. Since this is an "explicit conversion" operator, the implicit
8824 conversion should never be performed on the output.
8826 Fixed a problem with the CopyObject operator where a copy to an existing
8827 named object did not always completely overwrite the existing object
8829 at name. Specifically, a buffer-to-buffer copy did not delete the
8833 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
8835 structs for consistency.
8837 Code and Data Size: Current and previous core subsystem library sizes are
8838 shown below. These are the code and data sizes for the acpica.lib
8840 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8841 any ACPI driver or OSPM code. The debug version of the code includes the
8842 debug output trace mechanism and has a much larger code and data size.
8844 that these values will vary depending on the efficiency of the compiler
8846 the compiler options used during generation.
8849 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8850 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8851 Current Release: (Same sizes)
8852 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8853 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8856 2) iASL Compiler/Disassembler:
8858 The compiler now emits a warning if an attempt is made to generate a 64-
8860 integer constant from within a 32-bit ACPI table (Revision < 2). The
8862 is truncated to 32 bits.
8864 Fixed a problem with large package objects: if the static length of the
8865 package is greater than 255, the "variable length package" opcode is
8866 emitted. Previously, this caused an error. This requires an update to the
8867 ACPI spec, since it currently (incorrectly) states that packages larger
8869 255 elements are not allowed.
8871 The disassembler now correctly handles variable length packages and
8873 larger than 255 elements.
8875 ----------------------------------------
8876 08 April 2005. Summary of changes for version 20050408:
8878 1) ACPI CA Core Subsystem:
8880 Fixed three cases in the interpreter where an "index" argument to an ASL
8881 function was still (internally) 32 bits instead of the required 64 bits.
8882 This was the Index argument to the Index, Mid, and Match operators.
8884 The "strupr" function is now permanently local (AcpiUtStrupr), since this
8886 not a POSIX-defined function and not present in most kernel-level C
8887 libraries. All references to the C library strupr function have been
8891 Completed the deployment of static functions/prototypes. All prototypes
8893 the static attribute have been moved from the headers to the owning C
8896 Implemented an extract option (-e) for the AcpiBin utility (AML binary
8897 utility). This option allows the utility to extract individual ACPI
8899 from the output of AcpiDmp. It provides the same functionality of the
8900 acpixtract.pl perl script without the worry of setting the correct perl
8901 options. AcpiBin runs on Windows and has not yet been generated/validated
8903 the Linux/Unix environment (but should be soon).
8905 Updated and fixed the table dump option for AcpiBin (-d). This option
8906 converts a single ACPI table to a hex/ascii file, similar to the output
8910 Code and Data Size: Current and previous core subsystem library sizes are
8911 shown below. These are the code and data sizes for the acpica.lib
8913 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8914 any ACPI driver or OSPM code. The debug version of the code includes the
8915 debug output trace mechanism and has a much larger code and data size.
8917 that these values will vary depending on the efficiency of the compiler
8919 the compiler options used during generation.
8922 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
8923 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
8925 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8926 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8929 2) iASL Compiler/Disassembler:
8931 Disassembler fix: Added a check to ensure that the table length found in
8933 ACPI table header within the input file is not longer than the actual
8935 file size. This indicates some kind of file or table corruption.
8937 ----------------------------------------
8938 29 March 2005. Summary of changes for version 20050329:
8940 1) ACPI CA Core Subsystem:
8942 An error is now generated if an attempt is made to create a Buffer Field
8944 length zero (A CreateField with a length operand of zero.)
8946 The interpreter now issues a warning whenever executable code at the
8948 level is detected during ACPI table load. This will give some idea of the
8949 prevalence of this type of code.
8951 Implemented support for references to named objects (other than control
8952 methods) within package objects.
8954 Enhanced package object output for the debug object. Package objects are
8956 completely dumped, showing all elements.
8958 Enhanced miscellaneous object output for the debug object. Any object can
8959 now be written to the debug object (for example, a device object can be
8960 written, and the type of the object will be displayed.)
8962 The "static" qualifier has been added to all local functions across both
8964 core subsystem and the iASL compiler.
8966 The number of "long" lines (> 80 chars) within the source has been
8967 significantly reduced, by about 1/3.
8969 Cleaned up all header files to ensure that all CA/iASL functions are
8970 prototyped (even static functions) and the formatting is consistent.
8972 Two new header files have been added, acopcode.h and acnames.h.
8974 Removed several obsolete functions that were no longer used.
8976 Code and Data Size: Current and previous core subsystem library sizes are
8977 shown below. These are the code and data sizes for the acpica.lib
8979 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8980 any ACPI driver or OSPM code. The debug version of the code includes the
8981 debug output trace mechanism and has a much larger code and data size.
8983 that these values will vary depending on the efficiency of the compiler
8985 the compiler options used during generation.
8988 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
8989 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
8991 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
8992 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
8996 2) iASL Compiler/Disassembler:
8998 Fixed a problem with the resource descriptor generation/support. For the
8999 ResourceSourceIndex and the ResourceSource fields, both must be present,
9001 both must be not present - can't have one without the other.
9003 The compiler now returns non-zero from the main procedure if any errors
9005 occurred during the compilation.
9008 ----------------------------------------
9009 09 March 2005. Summary of changes for version 20050309:
9011 1) ACPI CA Core Subsystem:
9013 The string-to-buffer implicit conversion code has been modified again
9015 a change to the ACPI specification. In order to match the behavior of
9017 other major ACPI implementation, the target buffer is no longer truncated
9019 the source string is smaller than an existing target buffer. This change
9020 requires an update to the ACPI spec, and should eliminate the recent
9021 AE_AML_BUFFER_LIMIT issues.
9023 The "implicit return" support was rewritten to a new algorithm that
9025 the general case. Rather than attempt to determine when a method is about
9027 exit, the result of every ASL operator is saved momentarily until the
9029 next ASL operator is executed. Therefore, no matter how the method exits,
9030 there will always be a saved implicit return value. This feature is only
9031 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9033 AE_AML_NO_RETURN_VALUE errors when enabled.
9035 Implemented implicit conversion support for the predicate (operand) of
9037 If, Else, and While operators. String and Buffer arguments are
9039 converted to Integers.
9041 Changed the string-to-integer conversion behavior to match the new ACPI
9042 errata: "If no integer object exists, a new integer is created. The ASCII
9043 string is interpreted as a hexadecimal constant. Each string character is
9044 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9045 with the first character as the most significant digit, and ending with
9047 first non-hexadecimal character or end-of-string." This means that the
9049 non-hex character terminates the conversion and this is the code that was
9052 Fixed a problem where the ObjectType operator would fail (fault) when
9054 on an Index of a Package which pointed to a null package element. The
9055 operator now properly returns zero (Uninitialized) in this case.
9057 Fixed a problem where the While operator used excessive memory by not
9058 properly popping the result stack during execution. There was no memory
9060 after execution, however. (Code provided by Valery Podrezov.)
9062 Fixed a problem where references to control methods within Package
9064 caused the method to be invoked, instead of producing a reference object
9065 pointing to the method.
9067 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9069 improve performance and reduce code size. (Code provided by Alexey
9072 Code and Data Size: Current and previous core subsystem library sizes are
9073 shown below. These are the code and data sizes for the acpica.lib
9075 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9076 any ACPI driver or OSPM code. The debug version of the code includes the
9077 debug output trace mechanism and has a much larger code and data size.
9079 that these values will vary depending on the efficiency of the compiler
9081 the compiler options used during generation.
9084 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9085 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9087 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9088 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9091 2) iASL Compiler/Disassembler:
9093 Fixed a problem with the Return operator with no arguments. Since the AML
9094 grammar for the byte encoding requires an operand for the Return opcode,
9096 compiler now emits a Return(Zero) for this case. An ACPI specification
9097 update has been written for this case.
9099 For tables other than the DSDT, namepath optimization is automatically
9100 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9102 compiler has no knowledge of where, and thus cannot optimize namepaths.
9104 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9105 inadvertently omitted from the ACPI specification, and will require an
9108 The source file scan for ASCII characters is now optional (-a). This
9110 was made because some vendors place non-ascii characters within comments.
9111 However, the scan is simply a brute-force byte compare to ensure all
9112 characters in the file are in the range 0x00 to 0x7F.
9114 Fixed a problem with the CondRefOf operator where the compiler was
9115 inappropriately checking for the existence of the target. Since the point
9117 the operator is to check for the existence of the target at run-time, the
9118 compiler no longer checks for the target existence.
9120 Fixed a problem where errors generated from the internal AML interpreter
9121 during constant folding were not handled properly, causing a fault.
9123 Fixed a problem with overly aggressive range checking for the Stall
9124 operator. The valid range (max 255) is now only checked if the operand is
9126 type Integer. All other operand types cannot be statically checked.
9128 Fixed a problem where control method references within the RefOf,
9130 and ObjectType operators were not treated properly. They are now treated
9132 actual references, not method invocations.
9134 Fixed and enhanced the "list namespace" option (-ln). This option was
9136 a number of releases ago.
9138 Improved error handling for the Field, IndexField, and BankField
9140 The compiler now cleanly reports and recovers from errors in the field
9141 component (FieldUnit) list.
9143 Fixed a disassembler problem where the optional ResourceDescriptor fields
9144 TRS and TTP were not always handled correctly.
9146 Disassembler - Comments in output now use "//" instead of "/*"
9148 ----------------------------------------
9149 28 February 2005. Summary of changes for version 20050228:
9151 1) ACPI CA Core Subsystem:
9153 Fixed a problem where the result of an Index() operator (an object
9154 reference) must increment the reference count on the target object for
9156 life of the object reference.
9158 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9159 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9161 resource descriptors.
9163 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9164 Space Descriptor" string, indicating interpreter support for the
9168 Implemented header support for the new ACPI 3.0 FADT flag bits.
9170 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9172 status/enable registers.
9174 Updated header support for the MADT processor local Apic struct and MADT
9175 platform interrupt source struct for new ACPI 3.0 fields.
9177 Implemented header support for the SRAT and SLIT ACPI tables.
9179 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9183 Code and Data Size: Current and previous core subsystem library sizes are
9184 shown below. These are the code and data sizes for the acpica.lib
9186 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9187 any ACPI driver or OSPM code. The debug version of the code includes the
9188 debug output trace mechanism and has a much larger code and data size.
9190 that these values will vary depending on the efficiency of the compiler
9192 the compiler options used during generation.
9195 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9196 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9198 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9199 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9202 2) iASL Compiler/Disassembler:
9204 Fixed a problem with the internal 64-bit String-to-integer conversion
9206 strings less than two characters long.
9208 Fixed a problem with constant folding where the result of the Index()
9209 operator can not be considered a constant. This means that Index() cannot
9211 a type3 opcode and this will require an update to the ACPI specification.
9213 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9214 descriptor fields. These fields were inadvertently ignored and not output
9216 the disassembly of the resource descriptor.
9219 ----------------------------------------
9220 11 February 2005. Summary of changes for version 20050211:
9222 1) ACPI CA Core Subsystem:
9224 Implemented ACPI 3.0 support for implicit conversion within the Match()
9225 operator. MatchObjects can now be of type integer, buffer, or string
9227 of just type integer. Package elements are implicitly converted to the
9229 of the MatchObject. This change aligns the behavior of Match() with the
9230 behavior of the other logical operators (LLess(), etc.) It also requires
9232 errata change to the ACPI specification as this support was intended for
9233 ACPI 3.0, but was inadvertently omitted.
9235 Fixed a problem with the internal implicit "to buffer" conversion.
9237 that are converted to buffers will cause buffer truncation if the string
9239 smaller than the target buffer. Integers that are converted to buffers
9241 not cause buffer truncation, only zero extension (both as per the ACPI
9242 spec.) The problem was introduced when code was added to truncate the
9243 buffer, but this should not be performed in all cases, only the string
9246 Fixed a problem with the Buffer and Package operators where the
9248 would get confused if two such operators were used as operands to an ASL
9249 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9250 stack was not being popped after the execution of these operators,
9252 in an AE_NO_RETURN_VALUE exception.
9254 Fixed a problem with constructs of the form Store(Index(...),...). The
9255 reference object returned from Index was inadvertently resolved to an
9257 value. This problem was introduced in version 20050114 when the behavior
9259 Store() was modified to restrict the object types that can be used as the
9260 source operand (to match the ACPI specification.)
9262 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9264 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9266 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9268 Code and Data Size: Current and previous core subsystem library sizes are
9269 shown below. These are the code and data sizes for the acpica.lib
9271 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9272 any ACPI driver or OSPM code. The debug version of the code includes the
9273 debug output trace mechanism and has a much larger code and data size.
9275 that these values will vary depending on the efficiency of the compiler
9277 the compiler options used during generation.
9280 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9281 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9283 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9284 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9287 2) iASL Compiler/Disassembler:
9289 Fixed a code generation problem in the constant folding optimization code
9290 where incorrect code was generated if a constant was reduced to a buffer
9291 object (i.e., a reduced type 5 opcode.)
9293 Fixed a typechecking problem for the ToBuffer operator. Caused by an
9294 incorrect return type in the internal opcode information table.
9296 ----------------------------------------
9297 25 January 2005. Summary of changes for version 20050125:
9299 1) ACPI CA Core Subsystem:
9301 Fixed a recently introduced problem with the Global Lock where the
9302 underlying semaphore was not created. This problem was introduced in
9303 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
9304 Acquire() operation on _GL.
9306 The local object cache is now optional, and is disabled by default. Both
9307 AcpiExec and the iASL compiler enable the cache because they run in user
9308 mode and this enhances their performance. #define
9309 ACPI_ENABLE_OBJECT_CACHE
9310 to enable the local cache.
9312 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
9314 optional "implicit return" support where an error was returned if no
9316 object was expected, but one was implicitly returned. AE_OK is now
9318 in this case and the implicitly returned object is deleted.
9319 AcpiUtEvaluateObject is only occasionally used, and only to execute
9321 methods such as _STA and _INI where the return type is known up front.
9323 Fixed a few issues with the internal convert-to-integer code. It now
9325 an error if an attempt is made to convert a null string, a string of only
9326 blanks/tabs, or a zero-length buffer. This affects both implicit
9328 and explicit conversion via the ToInteger() operator.
9330 The internal debug code in AcpiUtAcquireMutex has been commented out. It
9332 not needed for normal operation and should increase the performance of
9334 entire subsystem. The code remains in case it is needed for debug
9338 The AcpiExec source and makefile are included in the Unix/Linux package
9342 Code and Data Size: Current and previous core subsystem library sizes are
9343 shown below. These are the code and data sizes for the acpica.lib
9345 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9346 any ACPI driver or OSPM code. The debug version of the code includes the
9347 debug output trace mechanism and has a much larger code and data size.
9349 that these values will vary depending on the efficiency of the compiler
9351 the compiler options used during generation.
9354 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9355 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9357 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9358 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9360 2) iASL Compiler/Disassembler:
9362 Switch/Case support: A warning is now issued if the type of the Switch
9364 cannot be determined at compile time. For example, Switch(Arg0) will
9365 generate the warning, and the type is assumed to be an integer. As per
9367 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
9371 Switch/Case support: Implemented support for buffer and string objects as
9372 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
9373 buffers and strings.
9375 Switch/Case support: The emitted code for the LEqual() comparisons now
9377 the switch value as the first operand, not the second. The case value is
9379 the second operand, and this allows the case value to be implicitly
9380 converted to the type of the switch value, not the other way around.
9382 Switch/Case support: Temporary variables are now emitted immediately
9384 the control method, not at the global level. This means that there are
9386 36 temps available per-method, not 36 temps per-module as was the case
9388 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
9390 ----------------------------------------
9391 14 January 2005. Summary of changes for version 20050114:
9393 Added 2005 copyright to all module headers. This affects every module in
9394 the core subsystem, iASL compiler, and the utilities.
9396 1) ACPI CA Core Subsystem:
9398 Fixed an issue with the String-to-Buffer conversion code where the string
9399 null terminator was not included in the buffer after conversion, but
9401 is existing ASL that assumes the string null terminator is included. This
9403 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
9404 introduced in the previous version when the code was updated to correctly
9405 set the converted buffer size as per the ACPI specification. The ACPI
9407 is ambiguous and will be updated to specify that the null terminator must
9409 included in the converted buffer. This also affects the ToBuffer() ASL
9412 Fixed a problem with the Mid() ASL/AML operator where it did not work
9413 correctly on Buffer objects. Newly created sub-buffers were not being
9418 Fixed a problem in AcpiTbFindTable where incorrect string compares were
9419 performed on the OemId and OemTableId table header fields. These fields
9421 not null terminated, so strncmp is now used instead of strcmp.
9423 Implemented a restriction on the Store() ASL/AML operator to align the
9424 behavior with the ACPI specification. Previously, any object could be
9426 as the source operand. Now, the only objects that may be used are
9428 Buffers, Strings, Packages, Object References, and DDB Handles. If
9429 necessary, the original behavior can be restored by enabling the
9430 EnableInterpreterSlack flag.
9432 Enhanced the optional "implicit return" support to allow an implicit
9434 value from methods that are invoked externally via the AcpiEvaluateObject
9435 interface. This enables implicit returns from the _STA and _INI methods,
9438 Changed the Revision() ASL/AML operator to return the current version of
9440 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
9442 the supported ACPI version (This is the function of the _REV method).
9444 Updated the _REV predefined method to return the currently supported
9448 Implemented batch mode option for the AcpiExec utility (-b).
9450 Code and Data Size: Current and previous core subsystem library sizes are
9451 shown below. These are the code and data sizes for the acpica.lib
9453 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9454 any ACPI driver or OSPM code. The debug version of the code includes the
9455 debug output trace mechanism and has a much larger code and data size.
9457 that these values will vary depending on the efficiency of the compiler
9459 the compiler options used during generation.
9462 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9463 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9465 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9466 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9468 ----------------------------------------
9469 10 December 2004. Summary of changes for version 20041210:
9471 ACPI 3.0 support is nearing completion in both the iASL compiler and the
9472 ACPI CA core subsystem.
9474 1) ACPI CA Core Subsystem:
9476 Fixed a problem in the ToDecimalString operator where the resulting
9478 length was incorrectly calculated. The length is now calculated exactly,
9479 eliminating incorrect AE_STRING_LIMIT exceptions.
9481 Fixed a problem in the ToHexString operator to allow a maximum 200
9483 string to be produced.
9485 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
9487 routine where the length of the resulting buffer was not truncated to the
9488 new size (if the target buffer already existed).
9490 Code and Data Size: Current and previous core subsystem library sizes are
9491 shown below. These are the code and data sizes for the acpica.lib
9493 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9494 any ACPI driver or OSPM code. The debug version of the code includes the
9495 debug output trace mechanism and has a much larger code and data size.
9497 that these values will vary depending on the efficiency of the compiler
9499 the compiler options used during generation.
9502 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9503 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9505 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9506 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9509 2) iASL Compiler/Disassembler:
9511 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
9512 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
9513 Includes support in the disassembler.
9515 Implemented support for the new (ACPI 3.0) parameter to the Register
9519 Fixed a problem where the _HE resource name for the Interrupt macro was
9520 referencing bit 0 instead of bit 1.
9522 Implemented check for maximum 255 interrupts in the Interrupt macro.
9524 Fixed a problem with the predefined resource descriptor names where
9525 incorrect AML code was generated if the offset within the resource buffer
9526 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
9527 but did not update the surrounding package lengths.
9529 Changes to the Dma macro: All channels within the channel list must be
9531 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
9532 optional (default is BusMaster).
9534 Implemented check for maximum 7 data bytes for the VendorShort macro.
9536 The ReadWrite parameter is now optional for the Memory32 and similar
9539 ----------------------------------------
9540 03 December 2004. Summary of changes for version 20041203:
9542 1) ACPI CA Core Subsystem:
9544 The low-level field insertion/extraction code (exfldio) has been
9546 rewritten to eliminate unnecessary complexity, bugs, and boundary
9549 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
9551 operators where the input operand could be inadvertently deleted if no
9552 conversion was necessary (e.g., if the input to ToInteger was an Integer
9555 Fixed a problem with the ToDecimalString and ToHexString where an
9557 exception code was returned if the resulting string would be > 200 chars.
9558 AE_STRING_LIMIT is now returned.
9560 Fixed a problem with the Concatenate operator where AE_OK was always
9561 returned, even if the operation failed.
9563 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
9564 semaphores to be allocated.
9566 Code and Data Size: Current and previous core subsystem library sizes are
9567 shown below. These are the code and data sizes for the acpica.lib
9569 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9570 any ACPI driver or OSPM code. The debug version of the code includes the
9571 debug output trace mechanism and has a much larger code and data size.
9573 that these values will vary depending on the efficiency of the compiler
9575 the compiler options used during generation.
9578 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9579 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9581 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9582 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9585 2) iASL Compiler/Disassembler:
9587 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
9588 recently introduced in 20041119.
9590 Fixed a problem with the ToUUID macro where the upper nybble of each
9592 byte was inadvertently set to zero.
9594 ----------------------------------------
9595 19 November 2004. Summary of changes for version 20041119:
9597 1) ACPI CA Core Subsystem:
9599 Fixed a problem in the internal ConvertToInteger routine where new
9601 were not truncated to 32 bits for 32-bit ACPI tables. This routine
9603 buffers and strings to integers.
9605 Implemented support to store a value to an Index() on a String object.
9607 is an ACPI 2.0 feature that had not yet been implemented.
9609 Implemented new behavior for storing objects to individual package
9611 (via the Index() operator). The previous behavior was to invoke the
9613 conversion rules if an object was already present at the index. The new
9614 behavior is to simply delete any existing object and directly store the
9616 object. Although the ACPI specification seems unclear on this subject,
9618 ACPI implementations behave in this manner. (This is the root of the
9619 AE_BAD_HEX_CONSTANT issue.)
9621 Modified the RSDP memory scan mechanism to support the extended checksum
9623 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
9624 RSDP signature is found with a valid checksum.
9626 Code and Data Size: Current and previous core subsystem library sizes are
9627 shown below. These are the code and data sizes for the acpica.lib
9629 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9630 any ACPI driver or OSPM code. The debug version of the code includes the
9631 debug output trace mechanism and has a much larger code and data size.
9633 that these values will vary depending on the efficiency of the compiler
9635 the compiler options used during generation.
9638 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9639 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9641 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9642 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9645 2) iASL Compiler/Disassembler:
9647 Fixed a missing semicolon in the aslcompiler.y file.
9649 ----------------------------------------
9650 05 November 2004. Summary of changes for version 20041105:
9652 1) ACPI CA Core Subsystem:
9654 Implemented support for FADT revision 2. This was an interim table
9656 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
9658 Implemented optional support to allow uninitialized LocalX and ArgX
9659 variables in a control method. The variables are initialized to an
9661 object with a value of zero. This support is enabled by setting the
9662 AcpiGbl_EnableInterpreterSlack flag to TRUE.
9664 Implemented support for Integer objects for the SizeOf operator. Either
9666 or 8 is returned, depending on the current integer size (32-bit or 64-
9668 depending on the parent table revision).
9670 Fixed a problem in the implementation of the SizeOf and ObjectType
9672 where the operand was resolved to a value too early, causing incorrect
9673 return values for some objects.
9675 Fixed some possible memory leaks during exceptional conditions.
9677 Code and Data Size: Current and previous core subsystem library sizes are
9678 shown below. These are the code and data sizes for the acpica.lib
9680 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9681 any ACPI driver or OSPM code. The debug version of the code includes the
9682 debug output trace mechanism and has a much larger code and data size.
9684 that these values will vary depending on the efficiency of the compiler
9686 the compiler options used during generation.
9689 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9690 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9692 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9693 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9696 2) iASL Compiler/Disassembler:
9698 Implemented support for all ACPI 3.0 reserved names and methods.
9700 Implemented all ACPI 3.0 grammar elements in the front-end, including
9701 support for semicolons.
9703 Implemented the ACPI 3.0 Function() and ToUUID() macros
9705 Fixed a problem in the disassembler where a Scope() operator would not be
9706 emitted properly if the target of the scope was in another table.
9708 ----------------------------------------
9709 15 October 2004. Summary of changes for version 20041015:
9711 Note: ACPI CA is currently undergoing an in-depth and complete formal
9712 evaluation to test/verify the following areas. Other suggestions are
9713 welcome. This will result in an increase in the frequency of releases and
9714 the number of bug fixes in the next few months.
9715 - Functional tests for all ASL/AML operators
9716 - All implicit/explicit type conversions
9717 - Bit fields and operation regions
9718 - 64-bit math support and 32-bit-only "truncated" math support
9719 - Exceptional conditions, both compiler and interpreter
9720 - Dynamic object deletion and memory leaks
9721 - ACPI 3.0 support when implemented
9722 - External interfaces to the ACPI subsystem
9725 1) ACPI CA Core Subsystem:
9727 Fixed two alignment issues on 64-bit platforms - within debug statements
9729 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
9731 field within the non-aligned ACPI generic address structure.
9733 Fixed a problem in the Increment and Decrement operators where incorrect
9734 operand resolution could result in the inadvertent modification of the
9735 original integer when the integer is passed into another method as an
9736 argument and the arg is then incremented/decremented.
9738 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
9740 BCD number were truncated during conversion.
9742 Fixed a problem in the ToDecimal operator where the length of the
9744 string could be set incorrectly too long if the input operand was a
9748 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
9750 within a buffer would prematurely terminate a compare between buffer
9753 Added a check for string overflow (>200 characters as per the ACPI
9754 specification) during the Concatenate operator with two string operands.
9756 Code and Data Size: Current and previous core subsystem library sizes are
9757 shown below. These are the code and data sizes for the acpica.lib
9759 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9760 any ACPI driver or OSPM code. The debug version of the code includes the
9761 debug output trace mechanism and has a much larger code and data size.
9763 that these values will vary depending on the efficiency of the compiler
9765 the compiler options used during generation.
9768 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9769 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9771 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9772 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9776 2) iASL Compiler/Disassembler:
9778 Allow the use of the ObjectType operator on uninitialized Locals and Args
9779 (returns 0 as per the ACPI specification).
9781 Fixed a problem where the compiler would fault if there was a syntax
9783 in the FieldName of all of the various CreateXXXField operators.
9785 Disallow the use of lower case letters within the EISAID macro, as per
9787 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
9789 U is an uppercase letter and N is a hex digit.
9792 ----------------------------------------
9793 06 October 2004. Summary of changes for version 20041006:
9795 1) ACPI CA Core Subsystem:
9797 Implemented support for the ACPI 3.0 Timer operator. This ASL function
9798 implements a 64-bit timer with 100 nanosecond granularity.
9800 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
9801 implement the ACPI 3.0 Timer operator. This allows the host OS to
9803 the timer with the best clock available. Also, it keeps the core
9805 out of the clock handling business, since the host OS (usually) performs
9808 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
9809 functions use a 64-bit address which is part of the packed ACPI Generic
9810 Address Structure. Since the structure is non-aligned, the alignment
9812 are now used to extract the address to a local variable before use.
9814 Fixed a problem where the ToInteger operator assumed all input strings
9816 hexadecimal. The operator now handles both decimal strings and hex
9818 (prefixed with "0x").
9820 Fixed a problem where the string length in the string object created as a
9821 result of the internal ConvertToString procedure could be incorrect. This
9822 potentially affected all implicit conversions and also the
9824 and ToHexString operators.
9826 Fixed two problems in the ToString operator. If the length parameter was
9827 zero, an incorrect string object was created and the value of the input
9828 length parameter was inadvertently changed from zero to Ones.
9830 Fixed a problem where the optional ResourceSource string in the
9832 resource macro was ignored.
9834 Simplified the interfaces to the internal division functions, reducing
9836 size and complexity.
9838 Code and Data Size: Current and previous core subsystem library sizes are
9839 shown below. These are the code and data sizes for the acpica.lib
9841 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9842 any ACPI driver or OSPM code. The debug version of the code includes the
9843 debug output trace mechanism and has a much larger code and data size.
9845 that these values will vary depending on the efficiency of the compiler
9847 the compiler options used during generation.
9850 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
9851 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
9853 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9854 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9857 2) iASL Compiler/Disassembler:
9859 Implemented support for the ACPI 3.0 Timer operator.
9861 Fixed a problem where the Default() operator was inadvertently ignored in
9863 Switch/Case block. This was a problem in the translation of the Switch
9864 statement to If...Else pairs.
9866 Added support to allow a standalone Return operator, with no parentheses
9870 Fixed a problem with code generation for the ElseIf operator where the
9871 translated Else...If parse tree was improperly constructed leading to the
9874 ----------------------------------------
9875 22 September 2004. Summary of changes for version 20040922:
9877 1) ACPI CA Core Subsystem:
9879 Fixed a problem with the implementation of the LNot() operator where
9881 was not returned for the TRUE case. Changed the code to return Ones
9883 of (!Arg) which was usually 1. This change affects iASL constant folding
9887 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
9889 initialized properly -- Now zero the entire buffer in this case where the
9890 buffer already exists.
9892 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
9893 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
9894 related code considerably. This will require changes/updates to all OS
9895 interface layers (OSLs.)
9897 Implemented a new external interface, AcpiInstallExceptionHandler, to
9899 a system exception handler to be installed. This handler is invoked upon
9901 run-time exception that occurs during control method execution.
9903 Added support for the DSDT in AcpiTbFindTable. This allows the
9904 DataTableRegion() operator to access the local copy of the DSDT.
9906 Code and Data Size: Current and previous core subsystem library sizes are
9907 shown below. These are the code and data sizes for the acpica.lib
9909 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9910 any ACPI driver or OSPM code. The debug version of the code includes the
9911 debug output trace mechanism and has a much larger code and data size.
9913 that these values will vary depending on the efficiency of the compiler
9915 the compiler options used during generation.
9918 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
9919 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
9921 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
9922 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
9925 2) iASL Compiler/Disassembler:
9927 Fixed a problem with constant folding and the LNot operator. LNot was
9928 returning 1 in the TRUE case, not Ones as per the ACPI specification.
9930 could result in the generation of an incorrect folded/reduced constant.
9932 End-Of-File is now allowed within a "//"-style comment. A parse error no
9933 longer occurs if such a comment is at the very end of the input ASL
9937 Implemented the "-r" option to override the Revision in the table header.
9938 The initial use of this option will be to simplify the evaluation of the
9940 interpreter by allowing a single ASL source module to be compiled for
9942 32-bit or 64-bit integers.
9945 ----------------------------------------
9946 27 August 2004. Summary of changes for version 20040827:
9948 1) ACPI CA Core Subsystem:
9950 - Implemented support for implicit object conversion in the non-numeric
9951 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
9953 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
9954 the second operand is implicitly converted on the fly to match the type
9956 the first operand. For example:
9958 LEqual (Source1, Source2)
9960 Source1 and Source2 must each evaluate to an integer, a string, or a
9962 The data type of Source1 dictates the required type of Source2. Source2
9964 implicitly converted if necessary to match the type of Source1.
9966 - Updated and corrected the behavior of the string conversion support.
9968 rules concerning conversion of buffers to strings (according to the ACPI
9969 specification) are as follows:
9971 ToDecimalString - explicit byte-wise conversion of buffer to string of
9972 decimal values (0-255) separated by commas. ToHexString - explicit byte-
9974 conversion of buffer to string of hex values (0-FF) separated by commas.
9975 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
9977 copy with no transform except NULL terminated. Any other implicit buffer-
9979 string conversion - byte-wise conversion of buffer to string of hex
9981 (0-FF) separated by spaces.
9983 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
9985 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
9987 one byte too short in the case of a node in the root scope. This could
9988 cause a fault during debug output.
9990 - Code and Data Size: Current and previous core subsystem library sizes
9992 shown below. These are the code and data sizes for the acpica.lib
9994 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9995 any ACPI driver or OSPM code. The debug version of the code includes the
9996 debug output trace mechanism and has a much larger code and data size.
9998 that these values will vary depending on the efficiency of the compiler
10000 the compiler options used during generation.
10003 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10004 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10006 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10007 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10010 2) iASL Compiler/Disassembler:
10012 - Fixed a Linux generation error.
10015 ----------------------------------------
10016 16 August 2004. Summary of changes for version 20040816:
10018 1) ACPI CA Core Subsystem:
10020 Designed and implemented support within the AML interpreter for the so-
10021 called "implicit return". This support returns the result of the last
10023 operation within a control method, in the absence of an explicit Return()
10024 operator. A few machines depend on this behavior, even though it is not
10025 explicitly supported by the ASL language. It is optional support that
10027 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10029 Removed support for the PCI_Config address space from the internal low
10031 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10032 support was not used internally, and would not work correctly anyway
10034 the PCI bus number and segment number were not supported. There are
10035 separate interfaces for PCI configuration space access because of the
10039 Code and Data Size: Current and previous core subsystem library sizes are
10040 shown below. These are the code and data sizes for the acpica.lib
10042 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10043 any ACPI driver or OSPM code. The debug version of the code includes the
10044 debug output trace mechanism and has a much larger code and data size.
10046 that these values will vary depending on the efficiency of the compiler
10048 the compiler options used during generation.
10051 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10052 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10054 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10055 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10058 2) iASL Compiler/Disassembler:
10060 Fixed a problem where constants in ASL expressions at the root level (not
10061 within a control method) could be inadvertently truncated during code
10062 generation. This problem was introduced in the 20040715 release.
10065 ----------------------------------------
10066 15 July 2004. Summary of changes for version 20040715:
10068 1) ACPI CA Core Subsystem:
10070 Restructured the internal HW GPE interfaces to pass/track the current
10072 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10073 increase flexibility of the interfaces.
10075 Implemented a "lexicographical compare" for String and Buffer objects
10077 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10079 as per further clarification to the ACPI specification. Behavior is
10081 to C library "strcmp".
10083 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10084 external function. In the 32-bit non-debug case, the stack use has been
10085 reduced from 168 bytes to 32 bytes.
10087 Deployed a new run-time configuration flag,
10088 AcpiGbl_EnableInterpreterSlack,
10089 whose purpose is to allow the AML interpreter to forgive certain bad AML
10090 constructs. Default setting is FALSE.
10092 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10094 support code. If enabled, it allows field access to go beyond the end of
10096 region definition if the field is within the region length rounded up to
10098 next access width boundary (a common coding error.)
10100 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10101 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10103 symbols are lowercased by the latest version of the AcpiSrc tool.
10105 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10106 rename "Register" to simply "Reg" to prevent certain compilers from
10109 Code and Data Size: Current and previous core subsystem library sizes are
10110 shown below. These are the code and data sizes for the acpica.lib
10112 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10113 any ACPI driver or OSPM code. The debug version of the code includes the
10114 debug output trace mechanism and has a much larger code and data size.
10116 that these values will vary depending on the efficiency of the compiler
10118 the compiler options used during generation.
10121 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10122 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10124 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10125 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10128 2) iASL Compiler/Disassembler:
10130 Implemented full support for Package objects within the Case() operator.
10131 Note: The Break() operator is currently not supported within Case blocks
10132 (TermLists) as there is some question about backward compatibility with
10137 Fixed a problem where complex terms were not supported properly within
10141 Eliminated extraneous warning for compiler-emitted reserved names of the
10142 form "_T_x". (Used in Switch/Case operators.)
10144 Eliminated optimization messages for "_T_x" objects and small constants
10145 within the DefinitionBlock operator.
10148 ----------------------------------------
10149 15 June 2004. Summary of changes for version 20040615:
10151 1) ACPI CA Core Subsystem:
10153 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10155 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10158 All directory names in the entire source package are lower case, as they
10159 were in earlier releases.
10161 Implemented "Disassemble" command in the AML debugger that will
10163 a single control method.
10165 Code and Data Size: Current and previous core subsystem library sizes are
10166 shown below. These are the code and data sizes for the acpica.lib
10168 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10169 any ACPI driver or OSPM code. The debug version of the code includes the
10170 debug output trace mechanism and has a much larger code and data size.
10172 that these values will vary depending on the efficiency of the compiler
10174 the compiler options used during generation.
10177 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10178 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10181 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10182 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10185 2) iASL Compiler/Disassembler:
10187 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10189 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10192 All directory names in the entire source package are lower case, as they
10193 were in earlier releases.
10195 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10198 Fixed an issue with the Windows version of the compiler where later
10200 of Windows place the FADT in the registry under the name "FADT" and not
10201 "FACP" as earlier versions did. This applies when using the -g or -
10202 d<nofilename> options. The compiler now looks for both strings as
10205 Fixed a problem with compiler namepath optimization where a namepath
10207 the Scope() operator could not be optimized if the namepath was a subpath
10209 the current scope path.
10211 ----------------------------------------
10212 27 May 2004. Summary of changes for version 20040527:
10214 1) ACPI CA Core Subsystem:
10216 Completed a new design and implementation for EBDA (Extended BIOS Data
10218 support in the RSDP scan code. The original code improperly scanned for
10220 EBDA by simply scanning from memory location 0 to 0x400. The correct
10222 is to first obtain the EBDA pointer from within the BIOS data area, then
10223 scan 1K of memory starting at the EBDA pointer. There appear to be few
10225 any machines that place the RSDP in the EBDA, however.
10227 Integrated a fix for a possible fault during evaluation of BufferField
10228 arguments. Obsolete code that was causing the problem was removed.
10230 Found and fixed a problem in the Field Support Code where data could be
10231 corrupted on a bit field read that starts on an aligned boundary but does
10232 not end on an aligned boundary. Merged the read/write "datum length"
10233 calculation code into a common procedure.
10235 Rolled in a couple of changes to the FreeBSD-specific header.
10238 Code and Data Size: Current and previous core subsystem library sizes are
10239 shown below. These are the code and data sizes for the acpica.lib
10241 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10242 any ACPI driver or OSPM code. The debug version of the code includes the
10243 debug output trace mechanism and has a much larger code and data size.
10245 that these values will vary depending on the efficiency of the compiler
10247 the compiler options used during generation.
10250 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10251 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10253 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10254 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10257 2) iASL Compiler/Disassembler:
10259 Fixed a generation warning produced by some overly-verbose compilers for
10263 ----------------------------------------
10264 14 May 2004. Summary of changes for version 20040514:
10266 1) ACPI CA Core Subsystem:
10268 Fixed a problem where hardware GPE enable bits sometimes not set properly
10269 during and after GPE method execution. Result of 04/27 changes.
10271 Removed extra "clear all GPEs" when sleeping/waking.
10273 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10274 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10276 the new AcpiEv* calls as appropriate.
10278 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10280 now "Microsoft Windows NT" for maximum compatibility. However this can
10282 changed by modifying the acconfig.h file.
10284 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10285 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10287 Run _INI methods on ThermalZone objects. This is against the ACPI
10288 specification, but there is apparently ASL code in the field that has
10290 _INI methods, and apparently "other" AML interpreters execute them.
10292 Performed a full 16/32/64 bit lint that resulted in some small changes.
10294 Added a sleep simulation command to the AML debugger to test sleep code.
10296 Code and Data Size: Current and previous core subsystem library sizes are
10297 shown below. These are the code and data sizes for the acpica.lib
10299 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10300 any ACPI driver or OSPM code. The debug version of the code includes the
10301 debug output trace mechanism and has a much larger code and data size.
10303 that these values will vary depending on the efficiency of the compiler
10305 the compiler options used during generation.
10308 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10309 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10311 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10312 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10314 ----------------------------------------
10315 27 April 2004. Summary of changes for version 20040427:
10317 1) ACPI CA Core Subsystem:
10319 Completed a major overhaul of the GPE handling within ACPI CA. There are
10320 now three types of GPEs: wake-only, runtime-only, and combination
10322 The only GPEs allowed to be combination wake/run are for button-style
10323 devices such as a control-method power button, control-method sleep
10325 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
10327 referenced by any _PRW methods are marked for "runtime" and hardware
10328 enabled. Any GPE that is referenced by a _PRW method is marked for
10330 (and disabled at runtime). However, at sleep time, only those GPEs that
10331 have been specifically enabled for wake via the AcpiEnableGpe interface
10333 actually be hardware enabled.
10335 A new external interface has been added, AcpiSetGpeType(), that is meant
10337 be used by device drivers to force a GPE to a particular type. It will
10339 especially useful for the drivers for the button devices mentioned above.
10341 Completed restructuring of the ACPI CA initialization sequence so that
10342 default operation region handlers are installed before GPEs are
10344 and the _PRW methods are executed. This will prevent errors when the
10346 methods attempt to access system memory or I/O space.
10348 GPE enable/disable no longer reads the GPE enable register. We now keep
10350 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
10351 thus no longer depend on the hardware to maintain these bits.
10353 Always clear the wake status and fixed/GPE status bits before sleep, even
10356 Improved the AML debugger output for displaying the GPE blocks and their
10359 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
10363 Fixed a problem where the physical address was incorrectly calculated
10365 the Load() operator was used to directly load from an Operation Region
10367 loading from a Field object.) Also added check for minimum table length
10371 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
10374 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
10375 consistency with the other fields returned.
10377 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
10378 structure for each GPE in the system, so the size of this structure is
10381 CPU stack requirement reduction: Cleaned up the method execution and
10383 evaluation paths so that now a parameter structure is passed, instead of
10384 copying the various method parameters over and over again.
10386 In evregion.c: Correctly exit and reenter the interpreter region if and
10387 only if dispatching an operation region request to a user-installed
10389 Do not exit/reenter when dispatching to a default handler (e.g., default
10390 system memory or I/O handlers)
10393 Notes for updating drivers for the new GPE support. The following
10395 must be made to ACPI-related device drivers that are attached to one or
10397 GPEs: (This information will be added to the ACPI CA Programmer
10400 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
10402 explicitly call AcpiEnableGpe.
10403 2) There is a new interface called AcpiSetGpeType. This should be called
10404 before enabling the GPE. Also, this interface will automatically disable
10405 the GPE if it is currently enabled.
10406 3) AcpiEnableGpe no longer supports a GPE type flag.
10408 Specific drivers that must be changed:
10410 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
10411 AeGpeHandler, NULL);
10412 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
10413 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
10415 2) Button Drivers (Power, Lid, Sleep):
10416 Run _PRW method under parent device
10417 If _PRW exists: /* This is a control-method button */
10418 Extract GPE number and possibly GpeDevice
10419 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
10420 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
10422 For all other devices that have _PRWs, we automatically set the GPE type
10424 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
10426 must be done on a selective basis, usually requiring some kind of user
10428 to allow the user to pick the wake devices.
10431 Code and Data Size: Current and previous core subsystem library sizes are
10432 shown below. These are the code and data sizes for the acpica.lib
10434 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10435 any ACPI driver or OSPM code. The debug version of the code includes the
10436 debug output trace mechanism and has a much larger code and data size.
10438 that these values will vary depending on the efficiency of the compiler
10440 the compiler options used during generation.
10443 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10444 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10447 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10448 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10452 ----------------------------------------
10453 02 April 2004. Summary of changes for version 20040402:
10455 1) ACPI CA Core Subsystem:
10457 Fixed an interpreter problem where an indirect store through an ArgX
10458 parameter was incorrectly applying the "implicit conversion rules" during
10459 the store. From the ACPI specification: "If the target is a method local
10461 argument (LocalX or ArgX), no conversion is performed and the result is
10462 stored directly to the target". The new behavior is to disable implicit
10463 conversion during ALL stores to an ArgX.
10465 Changed the behavior of the _PRW method scan to ignore any and all errors
10466 returned by a given _PRW. This prevents the scan from aborting from the
10467 failure of any single _PRW.
10469 Moved the runtime configuration parameters from the global init procedure
10471 static variables in acglobal.h. This will allow the host to override the
10472 default values easily.
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: 76.9K Code, 11.4K Data, 88.3K Total
10487 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10489 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10490 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10493 2) iASL Compiler/Disassembler:
10495 iASL now fully disassembles SSDTs. However, External() statements are
10497 generated automatically for unresolved symbols at this time. This is a
10498 planned feature for future implementation.
10500 Fixed a scoping problem in the disassembler that occurs when the type of
10502 target of a Scope() operator is overridden. This problem caused an
10503 incorrectly nested internal namespace to be constructed.
10505 Any warnings or errors that are emitted during disassembly are now
10507 out automatically so that the resulting file can be recompiled without
10511 ----------------------------------------
10512 26 March 2004. Summary of changes for version 20040326:
10514 1) ACPI CA Core Subsystem:
10516 Implemented support for "wake" GPEs via interaction between GPEs and the
10517 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
10518 identified as a WAKE GPE and by default will no longer be enabled at
10519 runtime. Previously, we were blindly enabling all GPEs with a
10521 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
10523 believe this has been the cause of thousands of "spurious" GPEs on some
10526 This new GPE behavior is can be reverted to the original behavior (enable
10527 ALL GPEs at runtime) via a runtime flag.
10529 Fixed a problem where aliased control methods could not access objects
10530 properly. The proper scope within the namespace was not initialized
10531 (transferred to the target of the aliased method) before executing the
10534 Fixed a potential race condition on internal object deletion on the
10536 object in AcpiEvaluateObject.
10538 Integrated a fix for resource descriptors where both _MEM and _MTP were
10539 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
10540 wide, 0x0F instead of 0x03.)
10542 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
10545 fault in some cases.
10547 Updated Notify() values for debug statements in evmisc.c
10549 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
10551 Code and Data Size: Current and previous core subsystem library sizes are
10552 shown below. These are the code and data sizes for the acpica.lib
10554 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10555 any ACPI driver or OSPM code. The debug version of the code includes the
10556 debug output trace mechanism and has a much larger code and data size.
10558 that these values will vary depending on the efficiency of the compiler
10560 the compiler options used during generation.
10564 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10565 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10567 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10568 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10570 ----------------------------------------
10571 11 March 2004. Summary of changes for version 20040311:
10573 1) ACPI CA Core Subsystem:
10575 Fixed a problem where errors occurring during the parse phase of control
10576 method execution did not abort cleanly. For example, objects created and
10577 installed in the namespace were not deleted. This caused all subsequent
10578 invocations of the method to return the AE_ALREADY_EXISTS exception.
10580 Implemented a mechanism to force a control method to "Serialized"
10582 if the method attempts to create namespace objects. (The root of the
10583 AE_ALREADY_EXISTS problem.)
10585 Implemented support for the predefined _OSI "internal" control method.
10586 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
10588 "Windows 2001.1", and can be easily upgraded for new strings as
10590 This feature will allow "other" operating systems to execute the fully
10591 tested, "Windows" code path through the ASL code
10593 Global Lock Support: Now allows multiple acquires and releases with any
10594 internal thread. Removed concept of "owning thread" for this special
10597 Fixed two functions that were inappropriately declaring large objects on
10599 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
10601 method execution considerably.
10603 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
10604 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
10606 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
10607 defined on the machine.
10609 Implemented two runtime options: One to force all control method
10611 to "Serialized" to mimic Windows behavior, another to disable _OSI
10613 if it causes problems on a given machine.
10615 Code and Data Size: Current and previous core subsystem library sizes are
10616 shown below. These are the code and data sizes for the acpica.lib
10618 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10619 any ACPI driver or OSPM code. The debug version of the code includes the
10620 debug output trace mechanism and has a much larger code and data size.
10622 that these values will vary depending on the efficiency of the compiler
10624 the compiler options used during generation.
10627 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10628 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10630 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10631 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10633 2) iASL Compiler/Disassembler:
10635 Fixed an array size problem for FreeBSD that would cause the compiler to
10638 ----------------------------------------
10639 20 February 2004. Summary of changes for version 20040220:
10642 1) ACPI CA Core Subsystem:
10644 Implemented execution of _SxD methods for Device objects in the
10645 GetObjectInfo interface.
10647 Fixed calls to _SST method to pass the correct arguments.
10649 Added a call to _SST on wake to restore to "working" state.
10651 Check for End-Of-Buffer failure case in the WalkResources interface.
10653 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
10654 structures to the beginning of the file.
10656 After wake, clear GPE status register(s) before enabling GPEs.
10658 After wake, clear/enable power button. (Perhaps we should clear/enable
10660 fixed events upon wake.)
10662 Fixed a couple of possible memory leaks in the Namespace manager.
10664 Integrated latest acnetbsd.h file.
10666 ----------------------------------------
10667 11 February 2004. Summary of changes for version 20040211:
10670 1) ACPI CA Core Subsystem:
10672 Completed investigation and implementation of the call-by-reference
10673 mechanism for control method arguments.
10675 Fixed a problem where a store of an object into an indexed package could
10676 fail if the store occurs within a different method than the method that
10677 created the package.
10679 Fixed a problem where the ToDecimal operator could return incorrect
10682 Fixed a problem where the CopyObject operator could fail on some of the
10684 obscure objects (e.g., Reference objects.)
10686 Improved the output of the Debug object to display buffer, package, and
10689 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
10691 the expected result.
10693 Added permanent ACPI_REPORT_ERROR macros for all instances of the
10694 ACPI_AML_INTERNAL exception.
10696 Integrated latest version of acfreebsd.h
10698 ----------------------------------------
10699 16 January 2004. Summary of changes for version 20040116:
10701 The purpose of this release is primarily to update the copyright years in
10702 each module, thus causing a huge number of diffs. There are a few small
10703 functional changes, however.
10705 1) ACPI CA Core Subsystem:
10707 Improved error messages when there is a problem finding one or more of
10709 required base ACPI tables
10711 Reintroduced the definition of APIC_HEADER in actbl.h
10713 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
10715 Removed extraneous reference to NewObj in dsmthdat.c
10719 Fixed a problem introduced in December that disabled the correct
10721 of Resource Templates
10724 ----------------------------------------
10725 03 December 2003. Summary of changes for version 20031203:
10727 1) ACPI CA Core Subsystem:
10729 Changed the initialization of Operation Regions during subsystem
10730 init to perform two entire walks of the ACPI namespace; The first
10731 to initialize the regions themselves, the second to execute the
10732 _REG methods. This fixed some interdependencies across _REG
10733 methods found on some machines.
10735 Fixed a problem where a Store(Local0, Local1) could simply update
10736 the object reference count, and not create a new copy of the
10737 object if the Local1 is uninitialized.
10739 Implemented support for the _SST reserved method during sleep
10742 Implemented support to clear the SLP_TYP and SLP_EN bits when
10743 waking up, this is apparently required by some machines.
10745 When sleeping, clear the wake status only if SleepState is not S5.
10747 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
10748 pointer arithmetic advanced a string pointer too far.
10750 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
10751 could be returned if the requested table has not been loaded.
10753 Within the support for IRQ resources, restructured the handling of
10754 the active and edge/level bits.
10756 Fixed a few problems in AcpiPsxExecute() where memory could be
10757 leaked under certain error conditions.
10759 Improved error messages for the cases where the ACPI mode could
10762 Code and Data Size: Current and previous core subsystem library
10763 sizes are shown below. These are the code and data sizes for the
10764 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10765 these values do not include any ACPI driver or OSPM code. The
10766 debug version of the code includes the debug output trace
10767 mechanism and has a much larger code and data size. Note that
10768 these values will vary depending on the efficiency of the compiler
10769 and the compiler options used during generation.
10771 Previous Release (20031029):
10772 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10773 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10775 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10776 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10778 2) iASL Compiler/Disassembler:
10780 Implemented a fix for the iASL disassembler where a bad index was
10781 generated. This was most noticeable on 64-bit platforms
10784 ----------------------------------------
10785 29 October 2003. Summary of changes for version 20031029:
10787 1) ACPI CA Core Subsystem:
10790 Fixed a problem where a level-triggered GPE with an associated
10791 _Lxx control method was incorrectly cleared twice.
10793 Fixed a problem with the Field support code where an access can
10794 occur beyond the end-of-region if the field is non-aligned but
10795 extends to the very end of the parent region (resulted in an
10796 AE_AML_REGION_LIMIT exception.)
10798 Fixed a problem with ACPI Fixed Events where an RT Clock handler
10799 would not get invoked on an RTC event. The RTC event bitmasks for
10800 the PM1 registers were not being initialized properly.
10802 Implemented support for executing _STA and _INI methods for
10803 Processor objects. Although this is currently not part of the
10804 ACPI specification, there is existing ASL code that depends on the
10805 init-time execution of these methods.
10807 Implemented and deployed a GetDescriptorName function to decode
10808 the various types of internal descriptors. Guards against null
10809 descriptors during debug output also.
10811 Implemented and deployed a GetNodeName function to extract the 4-
10812 character namespace node name. This function simplifies the debug
10813 and error output, as well as guarding against null pointers during
10816 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
10817 simplify the debug and error output of 64-bit integers. This
10818 macro replaces the HIDWORD and LODWORD macros for dumping these
10821 Updated the implementation of the Stall() operator to only call
10822 AcpiOsStall(), and also return an error if the operand is larger
10823 than 255. This preserves the required behavior of not
10824 relinquishing the processor, as would happen if AcpiOsSleep() was
10825 called for "long stalls".
10827 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
10828 initialized are now treated as NOOPs.
10830 Cleaned up a handful of warnings during 64-bit generation.
10832 Fixed a reported error where and incorrect GPE number was passed
10833 to the GPE dispatch handler. This value is only used for error
10834 output, however. Used this opportunity to clean up and streamline
10835 the GPE dispatch code.
10837 Code and Data Size: Current and previous core subsystem library
10838 sizes are shown below. These are the code and data sizes for the
10839 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10840 these values do not include any ACPI driver or OSPM code. The
10842 debug version of the code includes the debug output trace
10843 mechanism and has a much larger code and data size. Note that
10844 these values will vary depending on the efficiency of the compiler
10845 and the compiler options used during generation.
10847 Previous Release (20031002):
10848 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
10849 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
10851 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10852 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10855 2) iASL Compiler/Disassembler:
10857 Updated the iASL compiler to return an error if the operand to the
10858 Stall() operator is larger than 255.
10861 ----------------------------------------
10862 02 October 2003. Summary of changes for version 20031002:
10865 1) ACPI CA Core Subsystem:
10867 Fixed a problem with Index Fields where the index was not
10868 incremented for fields that require multiple writes to the
10869 index/data registers (Fields that are wider than the data
10872 Fixed a problem with all Field objects where a write could go
10873 beyond the end-of-field if the field was larger than the access
10874 granularity and therefore required multiple writes to complete the
10875 request. An extra write beyond the end of the field could happen
10878 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
10879 would incorrectly be returned if the width of the Data Register
10880 was larger than the specified field access width.
10882 Completed fixes for LoadTable() and Unload() and verified their
10883 operation. Implemented full support for the "DdbHandle" object
10884 throughout the ACPI CA subsystem.
10886 Implemented full support for the MADT and ECDT tables in the ACPI
10887 CA header files. Even though these tables are not directly
10888 consumed by ACPI CA, the header definitions are useful for ACPI
10891 Integrated resource descriptor fixes posted to the Linux ACPI
10892 list. This included checks for minimum descriptor length, and
10893 support for trailing NULL strings within descriptors that have
10894 optional string elements.
10896 Code and Data Size: Current and previous core subsystem library
10897 sizes are shown below. These are the code and data sizes for the
10898 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10899 these values do not include any ACPI driver or OSPM code. The
10900 debug version of the code includes the debug output trace
10901 mechanism and has a much larger code and data size. Note that
10902 these values will vary depending on the efficiency of the compiler
10903 and the compiler options used during generation.
10905 Previous Release (20030918):
10906 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
10907 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
10909 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
10910 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
10915 Implemented detection of non-ASCII characters within the input
10916 source ASL file. This catches attempts to compile binary (AML)
10917 files early in the compile, with an informative error message.
10919 Fixed a problem where the disassembler would fault if the output
10920 filename could not be generated or if the output file could not be
10923 ----------------------------------------
10924 18 September 2003. Summary of changes for version 20030918:
10927 1) ACPI CA Core Subsystem:
10929 Found and fixed a longstanding problem with the late execution of
10930 the various deferred AML opcodes (such as Operation Regions,
10931 Buffer Fields, Buffers, and Packages). If the name string
10932 specified for the name of the new object placed the object in a
10933 scope other than the current scope, the initialization/execution
10934 of the opcode failed. The solution to this problem was to
10935 implement a mechanism where the late execution of such opcodes
10936 does not attempt to lookup/create the name a second time in an
10937 incorrect scope. This fixes the "region size computed
10938 incorrectly" problem.
10940 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
10941 Global Lock AE_BAD_PARAMETER error.
10943 Fixed several 64-bit issues with prototypes, casting and data
10946 Removed duplicate prototype from acdisasm.h
10948 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
10950 Code and Data Size: Current and previous core subsystem library
10951 sizes are shown below. These are the code and data sizes for the
10952 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10953 these values do not include any ACPI driver or OSPM code. The
10954 debug version of the code includes the debug output trace
10955 mechanism and has a much larger code and data size. Note that
10956 these values will vary depending on the efficiency of the compiler
10957 and the compiler options used during generation.
10961 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
10962 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
10964 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
10965 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
10970 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
10971 correct sleep time in seconds.
10973 ----------------------------------------
10974 14 July 2003. Summary of changes for version 20030619:
10976 1) ACPI CA Core Subsystem:
10978 Parse SSDTs in order discovered, as opposed to reverse order
10981 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
10988 Dynamically allocate SDT list (suggested by Andi Kleen)
10990 proc function return value cleanups (Andi Kleen)
10992 Correctly handle NMI watchdog during long stalls (Andrew Morton)
10994 Make it so acpismp=force works (reported by Andrew Morton)
10997 ----------------------------------------
10998 19 June 2003. Summary of changes for version 20030619:
11000 1) ACPI CA Core Subsystem:
11002 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11004 Do not acquire a semaphore in the S5 shutdown path.
11006 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11008 Fix sleep/stall code reversal. (Andi Kleen)
11010 Revert a change having to do with control method calling
11015 acpiphp update (Takayoshi Kochi)
11017 Export acpi_disabled for sonypi (Stelian Pop)
11019 Mention acpismp=force in config help
11021 Re-add acpitable.c and acpismp=force. This improves backwards
11023 compatibility and also cleans up the code to a significant degree.
11025 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11027 ----------------------------------------
11028 22 May 2003. Summary of changes for version 20030522:
11030 1) ACPI CA Core Subsystem:
11032 Found and fixed a reported problem where an AE_NOT_FOUND error
11033 occurred occasionally during _BST evaluation. This turned out to
11034 be an Owner ID allocation issue where a called method did not get
11035 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11036 ID UINT16 would wraparound so that the ID would be the same as the
11037 caller's and the called method would delete the caller's
11040 Implemented extended error reporting for control methods that are
11041 aborted due to a run-time exception. Output includes the exact
11042 AML instruction that caused the method abort, a dump of the method
11043 locals and arguments at the time of the abort, and a trace of all
11044 nested control method calls.
11046 Modified the interpreter to allow the creation of buffers of zero
11047 length from the AML code. Implemented new code to ensure that no
11048 attempt is made to actually allocate a memory buffer (of length
11049 zero) - instead, a simple buffer object with a NULL buffer pointer
11050 and length zero is created. A warning is no longer issued when
11051 the AML attempts to create a zero-length buffer.
11053 Implemented a workaround for the "leading asterisk issue" in
11054 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11055 asterisk is automatically removed if present in any HID, UID, or
11056 CID strings. The iASL compiler will still flag this asterisk as
11059 Implemented full support for _CID methods that return a package of
11060 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11061 now additionally returns a device _CID list if present. This
11062 required a change to the external interface in order to pass an
11063 ACPI_BUFFER object as a parameter since the _CID list is of
11066 Fixed a problem with the new AE_SAME_HANDLER exception where
11067 handler initialization code did not know about this exception.
11069 Code and Data Size: Current and previous core subsystem library
11070 sizes are shown below. These are the code and data sizes for the
11071 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11072 these values do not include any ACPI driver or OSPM code. The
11073 debug version of the code includes the debug output trace
11074 mechanism and has a much larger code and data size. Note that
11075 these values will vary depending on the efficiency of the compiler
11076 and the compiler options used during generation.
11078 Previous Release (20030509):
11079 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11080 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11082 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11083 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11088 Fixed a bug in which we would reinitialize the ACPI interrupt
11089 after it was already working, thus disabling all ACPI and the IRQs
11090 for any other device sharing the interrupt. (Thanks to Stian
11093 Toshiba driver update (John Belmonte)
11095 Return only 0 or 1 for our interrupt handler status (Andrew
11101 Fixed a reported problem where multiple (nested) ElseIf()
11102 statements were not handled correctly by the compiler, resulting
11103 in incorrect warnings and incorrect AML code. This was a problem
11104 in both the ASL parser and the code generator.
11109 Added changes to existing interfaces, new exception codes, and new
11110 text concerning reference count object management versus garbage
11113 ----------------------------------------
11114 09 May 2003. Summary of changes for version 20030509.
11117 1) ACPI CA Core Subsystem:
11119 Changed the subsystem initialization sequence to hold off
11120 installation of address space handlers until the hardware has been
11121 initialized and the system has entered ACPI mode. This is because
11122 the installation of space handlers can cause _REG methods to be
11123 run. Previously, the _REG methods could potentially be run before
11124 ACPI mode was enabled.
11126 Fixed some memory leak issues related to address space handler and
11127 notify handler installation. There were some problems with the
11128 reference count mechanism caused by the fact that the handler
11129 objects are shared across several namespace objects.
11131 Fixed a reported problem where reference counts within the
11132 namespace were not properly updated when named objects created by
11133 method execution were deleted.
11135 Fixed a reported problem where multiple SSDTs caused a deletion
11136 issue during subsystem termination. Restructured the table data
11137 structures to simplify the linked lists and the related code.
11139 Fixed a problem where the table ID associated with secondary
11140 tables (SSDTs) was not being propagated into the namespace objects
11141 created by those tables. This would only present a problem for
11142 tables that are unloaded at run-time, however.
11144 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11145 type as the length parameter (instead of UINT32).
11147 Solved a long-standing problem where an ALREADY_EXISTS error
11148 appears on various systems. This problem could happen when there
11149 are multiple PCI_Config operation regions under a single PCI root
11150 bus. This doesn't happen very frequently, but there are some
11151 systems that do this in the ASL.
11153 Fixed a reported problem where the internal DeleteNode function
11154 was incorrectly handling the case where a namespace node was the
11155 first in the parent's child list, and had additional peers (not
11156 the only child, but first in the list of children.)
11158 Code and Data Size: Current core subsystem library sizes are shown
11159 below. These are the code and data sizes for the acpica.lib
11160 produced by the Microsoft Visual C++ 6.0 compiler, and these
11161 values do not include any ACPI driver or OSPM code. The debug
11162 version of the code includes the debug output trace mechanism and
11163 has a much larger code and data size. Note that these values will
11164 vary depending on the efficiency of the compiler and the compiler
11165 options used during generation.
11168 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11169 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11171 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11172 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11177 Allow ":" in OS override string (Ducrot Bruno)
11179 Kobject fix (Greg KH)
11182 3 iASL Compiler/Disassembler:
11184 Fixed a problem in the generation of the C source code files (AML
11185 is emitted in C source statements for BIOS inclusion) where the
11186 Ascii dump that appears within a C comment at the end of each line
11187 could cause a compile time error if the AML sequence happens to
11188 have an open comment or close comment sequence embedded.
11191 ----------------------------------------
11192 24 April 2003. Summary of changes for version 20030424.
11195 1) ACPI CA Core Subsystem:
11197 Support for big-endian systems has been implemented. Most of the
11198 support has been invisibly added behind big-endian versions of the
11199 ACPI_MOVE_* macros.
11201 Fixed a problem in AcpiHwDisableGpeBlock() and
11202 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11203 low level hardware write routine. The offset parameter was
11204 actually eliminated from the low level read/write routines because
11205 they had become obsolete.
11207 Fixed a problem where a handler object was deleted twice during
11208 the removal of a fixed event handler.
11213 A fix for SMP systems with link devices was contributed by
11217 (2.5) Return whether we handled the interrupt in our IRQ handler.
11218 (Linux ISRs no longer return void, so we can propagate the handler
11219 return value from the ACPI CA core back to the OS.)
11225 The ACPI CA Programmer Reference has been updated to reflect new
11226 interfaces and changes to existing interfaces.
11228 ----------------------------------------
11229 28 March 2003. Summary of changes for version 20030328.
11231 1) ACPI CA Core Subsystem:
11233 The GPE Block Device support has been completed. New interfaces
11234 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11235 interfaces (enable, disable, clear, getstatus) have been split
11236 into separate interfaces for Fixed Events and General Purpose
11237 Events (GPEs) in order to support GPE Block Devices properly.
11239 Fixed a problem where the error message "Failed to acquire
11240 semaphore" would appear during operations on the embedded
11243 Code and Data Size: Current core subsystem library sizes are shown
11244 below. These are the code and data sizes for the acpica.lib
11245 produced by the Microsoft Visual C++ 6.0 compiler, and these
11246 values do not include any ACPI driver or OSPM code. The debug
11247 version of the code includes the debug output trace mechanism and
11248 has a much larger code and data size. Note that these values will
11249 vary depending on the efficiency of the compiler and the compiler
11250 options used during generation.
11253 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11254 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11256 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11257 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11260 ----------------------------------------
11261 28 February 2003. Summary of changes for version 20030228.
11264 1) ACPI CA Core Subsystem:
11266 The GPE handling and dispatch code has been completely overhauled
11267 in preparation for support of GPE Block Devices (ID ACPI0006).
11268 This affects internal data structures and code only; there should
11269 be no differences visible externally. One new file has been
11272 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11273 fields that are used to determine the GPE block lengths. The
11274 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11275 structures are ignored. This is per the ACPI specification but it
11276 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11277 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11279 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11280 register to look at the SCI_EN bit. On some machines, this read
11281 causes an SMI event and greatly slows down SCI events. (This may
11282 in fact be the cause of slow battery status response on some
11285 Fixed a problem where a store of a NULL string to a package object
11286 could cause the premature deletion of the object. This was seen
11287 during execution of the battery _BIF method on some systems,
11288 resulting in no battery data being returned.
11290 Added AcpiWalkResources interface to simplify parsing of resource
11293 Code and Data Size: Current core subsystem library sizes are shown
11294 below. These are the code and data sizes for the acpica.lib
11295 produced by the Microsoft Visual C++ 6.0 compiler, and these
11296 values do not include any ACPI driver or OSPM code. The debug
11297 version of the code includes the debug output trace mechanism and
11298 has a much larger code and data size. Note that these values will
11299 vary depending on the efficiency of the compiler and the compiler
11300 options used during generation.
11303 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11304 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11306 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11307 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11312 S3 fixes (Ole Rohne)
11314 Update ACPI PHP driver with to use new acpi_walk_resource API
11317 Add S4BIOS support (Pavel Machek)
11319 Map in entire table before performing checksum (John Stultz)
11321 Expand the mem= cmdline to allow the specification of reserved and
11322 ACPI DATA blocks (Pavel Machek)
11324 Never use ACPI on VISWS
11326 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
11328 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
11329 causing us to think that some systems support C2 when they really
11332 Do not count processor objects for non-present CPUs (Thanks to
11338 Fixed a problem where ASL include files could not be found and
11341 Added support for the _PDC reserved name.
11344 ----------------------------------------
11345 22 January 2003. Summary of changes for version 20030122.
11348 1) ACPI CA Core Subsystem:
11350 Added a check for constructs of the form: Store (Local0, Local0)
11351 where Local0 is not initialized. Apparently, some BIOS
11352 programmers believe that this is a NOOP. Since this store doesn't
11353 do anything anyway, the new prototype behavior will ignore this
11354 error. This is a case where we can relax the strict checking in
11355 the interpreter in the name of compatibility.
11360 The AcpiSrc Source Conversion Utility has been released with the
11361 Linux package for the first time. This is the utility that is
11362 used to convert the ACPI CA base source code to the Linux version.
11364 (Both) Handle P_BLK lengths shorter than 6 more gracefully
11366 (Both) Move more headers to include/acpi, and delete an unused
11369 (Both) Move drivers/acpi/include directory to include/acpi
11371 (Both) Boot functions don't use cmdline, so don't pass it around
11373 (Both) Remove include of unused header (Adrian Bunk)
11375 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
11377 former now also includes the latter, acpiphp.h only needs the one,
11380 (2.5) Make it possible to select method of bios restoring after S3
11381 resume. [=> no more ugly ifdefs] (Pavel Machek)
11383 (2.5) Make proc write interfaces work (Pavel Machek)
11385 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
11387 (2.5) Break out ACPI Perf code into its own module, under cpufreq
11388 (Dominik Brodowski)
11390 (2.4) S4BIOS support (Ducrot Bruno)
11392 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
11398 Added support to disassemble SSDT and PSDTs.
11400 Implemented support to obtain SSDTs from the Windows registry if
11404 ----------------------------------------
11405 09 January 2003. Summary of changes for version 20030109.
11407 1) ACPI CA Core Subsystem:
11409 Changed the behavior of the internal Buffer-to-String conversion
11410 function. The current ACPI specification states that the contents
11411 of the buffer are "converted to a string of two-character
11412 hexadecimal numbers, each separated by a space". Unfortunately,
11413 this definition is not backwards compatible with existing ACPI 1.0
11414 implementations (although the behavior was not defined in the ACPI
11415 1.0 specification). The new behavior simply copies data from the
11416 buffer to the string until a null character is found or the end of
11417 the buffer is reached. The new String object is always null
11418 terminated. This problem was seen during the generation of _BIF
11419 battery data where incorrect strings were returned for battery
11420 type, etc. This will also require an errata to the ACPI
11423 Renamed all instances of NATIVE_UINT and NATIVE_INT to
11424 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
11426 Copyright in all module headers (both Linux and non-Linux) has be
11429 Code and Data Size: Current core subsystem library sizes are shown
11430 below. These are the code and data sizes for the acpica.lib
11431 produced by the Microsoft Visual C++ 6.0 compiler, and these
11432 values do not include any ACPI driver or OSPM code. The debug
11433 version of the code includes the debug output trace mechanism and
11434 has a much larger code and data size. Note that these values will
11435 vary depending on the efficiency of the compiler and the compiler
11436 options used during generation.
11439 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11440 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11442 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11443 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11448 Fixed an oops on module insertion/removal (Matthew Tippett)
11450 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
11452 (2.5) Replace pr_debug (Randy Dunlap)
11454 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
11456 (Both) Eliminate spawning of thread from timer callback, in favor
11459 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
11461 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
11463 (Both) Add missing statics to button.c (Pavel Machek)
11465 Several changes have been made to the source code translation
11466 utility that generates the Linux Code in order to make the code
11469 All typedefs on structs and unions have been removed in keeping
11470 with the Linux coding style.
11472 Removed the non-Linux SourceSafe module revision number from each
11475 Completed major overhaul of symbols to be lowercased for linux.
11476 Doubled the number of symbols that are lowercased.
11478 Fixed a problem where identifiers within procedure headers and
11479 within quotes were not fully lower cased (they were left with a
11482 Some C macros whose only purpose is to allow the generation of 16-
11483 bit code are now completely removed in the Linux code, increasing
11484 readability and maintainability.
11486 ----------------------------------------
11488 12 December 2002. Summary of changes for version 20021212.
11491 1) ACPI CA Core Subsystem:
11493 Fixed a problem where the creation of a zero-length AML Buffer
11494 would cause a fault.
11496 Fixed a problem where a Buffer object that pointed to a static AML
11497 buffer (in an ACPI table) could inadvertently be deleted, causing
11500 Fixed a problem where a user buffer (passed in to the external
11501 ACPI CA interfaces) could be overwritten if the buffer was too
11502 small to complete the operation, causing memory corruption.
11504 Fixed a problem in the Buffer-to-String conversion code where a
11505 string of length one was always returned, regardless of the size
11506 of the input Buffer object.
11508 Removed the NATIVE_CHAR data type across the entire source due to
11509 lack of need and lack of consistent use.
11511 Code and Data Size: Current core subsystem library sizes are shown
11512 below. These are the code and data sizes for the acpica.lib
11513 produced by the Microsoft Visual C++ 6.0 compiler, and these
11514 values do not include any ACPI driver or OSPM code. The debug
11515 version of the code includes the debug output trace mechanism and
11516 has a much larger code and data size. Note that these values will
11517 vary depending on the efficiency of the compiler and the compiler
11518 options used during generation.
11521 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11522 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11524 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11525 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11528 ----------------------------------------
11529 05 December 2002. Summary of changes for version 20021205.
11531 1) ACPI CA Core Subsystem:
11533 Fixed a problem where a store to a String or Buffer object could
11534 cause corruption of the DSDT if the object type being stored was
11535 the same as the target object type and the length of the object
11536 being stored was equal to or smaller than the original (existing)
11537 target object. This was seen to cause corruption of battery _BIF
11538 buffers if the _BIF method modified the buffer on the fly.
11540 Fixed a problem where an internal error was generated if a control
11541 method invocation was used in an OperationRegion, Buffer, or
11542 Package declaration. This was caused by the deferred parsing of
11543 the control method and thus the deferred creation of the internal
11544 method object. The solution to this problem was to create the
11545 internal method object at the moment the method is encountered in
11546 the first pass - so that subsequent references to the method will
11547 able to obtain the required parameter count and thus properly
11548 parse the method invocation. This problem presented itself as an
11549 AE_AML_INTERNAL during the pass 1 parse phase during table load.
11551 Fixed a problem where the internal String object copy routine did
11552 not always allocate sufficient memory for the target String object
11553 and caused memory corruption. This problem was seen to cause
11554 "Allocation already present in list!" errors as memory allocation
11557 Implemented a new function for the evaluation of namespace objects
11558 that allows the specification of the allowable return object
11559 types. This simplifies a lot of code that checks for a return
11560 object of one or more specific objects returned from the
11561 evaluation (such as _STA, etc.) This may become and external
11562 function if it would be useful to ACPI-related drivers.
11564 Completed another round of prefixing #defines with "ACPI_" for
11567 Completed additional code restructuring to allow more modular
11568 linking for iASL compiler and AcpiExec. Several files were split
11569 creating new files. New files: nsparse.c dsinit.c evgpe.c
11571 Implemented an abort mechanism to terminate an executing control
11572 method via the AML debugger. This feature is useful for debugging
11573 control methods that depend (wait) for specific hardware
11576 Code and Data Size: Current core subsystem library sizes are shown
11577 below. These are the code and data sizes for the acpica.lib
11578 produced by the Microsoft Visual C++ 6.0 compiler, and these
11579 values do not include any ACPI driver or OSPM code. The debug
11580 version of the code includes the debug output trace mechanism and
11581 has a much larger code and data size. Note that these values will
11582 vary depending on the efficiency of the compiler and the compiler
11583 options used during generation.
11586 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11587 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11589 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11590 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11593 2) iASL Compiler/Disassembler
11595 Fixed a compiler code generation problem for "Interrupt" Resource
11596 Descriptors. If specified in the ASL, the optional "Resource
11597 Source Index" and "Resource Source" fields were not inserted into
11598 the correct location within the AML resource descriptor, creating
11599 an invalid descriptor.
11601 Fixed a disassembler problem for "Interrupt" resource descriptors.
11602 The optional "Resource Source Index" and "Resource Source" fields
11606 ----------------------------------------
11607 22 November 2002. Summary of changes for version 20021122.
11610 1) ACPI CA Core Subsystem:
11612 Fixed a reported problem where an object stored to a Method Local
11613 or Arg was not copied to a new object during the store - the
11614 object pointer was simply copied to the Local/Arg. This caused
11615 all subsequent operations on the Local/Arg to also affect the
11616 original source of the store operation.
11618 Fixed a problem where a store operation to a Method Local or Arg
11619 was not completed properly if the Local/Arg contained a reference
11620 (from RefOf) to a named field. The general-purpose store-to-
11621 namespace-node code is now used so that this case is handled
11624 Fixed a problem where the internal object copy routine would cause
11625 a protection fault if the object being copied was a Package and
11626 contained either 1) a NULL package element or 2) a nested sub-
11629 Fixed a problem with the GPE initialization that resulted from an
11630 ambiguity in the ACPI specification. One section of the
11631 specification states that both the address and length of the GPE
11632 block must be zero if the block is not supported. Another section
11633 implies that only the address need be zero if the block is not
11634 supported. The code has been changed so that both the address and
11635 the length must be non-zero to indicate a valid GPE block (i.e.,
11636 if either the address or the length is zero, the GPE block is
11639 Code and Data Size: Current core subsystem library sizes are shown
11640 below. These are the code and data sizes for the acpica.lib
11641 produced by the Microsoft Visual C++ 6.0 compiler, and these
11642 values do not include any ACPI driver or OSPM code. The debug
11643 version of the code includes the debug output trace mechanism and
11644 has a much larger code and data size. Note that these values will
11645 vary depending on the efficiency of the compiler and the compiler
11646 options used during generation.
11649 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11650 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11652 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11653 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11658 Cleaned up EC driver. Exported an external EC read/write
11659 interface. By going through this, other drivers (most notably
11660 sonypi) will be able to serialize access to the EC.
11663 3) iASL Compiler/Disassembler
11665 Implemented support to optionally generate include files for both
11666 ASM and C (the -i switch). This simplifies BIOS development by
11667 automatically creating include files that contain external
11668 declarations for the symbols that are created within the
11670 (optionally generated) ASM and C AML source files.
11673 ----------------------------------------
11674 15 November 2002. Summary of changes for version 20021115.
11676 1) ACPI CA Core Subsystem:
11678 Fixed a memory leak problem where an error during resolution of
11680 method arguments during a method invocation from another method
11681 failed to cleanup properly by deleting all successfully resolved
11684 Fixed a problem where the target of the Index() operator was not
11685 correctly constructed if the source object was a package. This
11686 problem has not been detected because the use of a target operand
11687 with Index() is very rare.
11689 Fixed a problem with the Index() operator where an attempt was
11690 made to delete the operand objects twice.
11692 Fixed a problem where an attempt was made to delete an operand
11693 twice during execution of the CondRefOf() operator if the target
11696 Implemented the first of perhaps several internal create object
11697 functions that create and initialize a specific object type. This
11698 consolidates duplicated code wherever the object is created, thus
11699 shrinking the size of the subsystem.
11701 Implemented improved debug/error messages for errors that occur
11702 during nested method invocations. All executing method pathnames
11703 are displayed (with the error) as the call stack is unwound - thus
11706 Fixed a problem introduced in the 10/02 release that caused
11707 premature deletion of a buffer object if a buffer was used as an
11708 ASL operand where an integer operand is required (Thus causing an
11709 implicit object conversion from Buffer to Integer.) The change in
11710 the 10/02 release was attempting to fix a memory leak (albeit
11713 Code and Data Size: Current core subsystem library sizes are shown
11714 below. These are the code and data sizes for the acpica.lib
11715 produced by the Microsoft Visual C++ 6.0 compiler, and these
11716 values do not include any ACPI driver or OSPM code. The debug
11717 version of the code includes the debug output trace mechanism and
11718 has a much larger code and data size. Note that these values will
11719 vary depending on the efficiency of the compiler and the compiler
11720 options used during generation.
11723 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11724 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11726 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11727 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11732 Changed the implementation of the ACPI semaphores to use down()
11733 instead of down_interruptable(). It is important that the
11734 execution of ACPI control methods not be interrupted by signals.
11735 Methods must run to completion, or the system may be left in an
11736 unknown/unstable state.
11738 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
11742 3) iASL Compiler/Disassembler
11745 Changed the default location of output files. All output files
11746 are now placed in the current directory by default instead of in
11747 the directory of the source file. This change may affect some
11748 existing makefiles, but it brings the behavior of the compiler in
11749 line with other similar tools. The location of the output files
11750 can be overridden with the -p command line switch.
11753 ----------------------------------------
11754 11 November 2002. Summary of changes for version 20021111.
11757 0) ACPI Specification 2.0B is released and is now available at:
11758 http://www.acpi.info/index.html
11761 1) ACPI CA Core Subsystem:
11763 Implemented support for the ACPI 2.0 SMBus Operation Regions.
11764 This includes the early detection and handoff of the request to
11765 the SMBus region handler (avoiding all of the complex field
11766 support code), and support for the bidirectional return packet
11767 from an SMBus write operation. This paves the way for the
11768 development of SMBus drivers in each host operating system.
11770 Fixed a problem where the semaphore WAIT_FOREVER constant was
11771 defined as 32 bits, but must be 16 bits according to the ACPI
11772 specification. This had the side effect of causing ASL
11773 Mutex/Event timeouts even though the ASL code requested a wait
11774 forever. Changed all internal references to the ACPI timeout
11775 parameter to 16 bits to prevent future problems. Changed the name
11776 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
11778 Code and Data Size: Current core subsystem library sizes are shown
11779 below. These are the code and data sizes for the acpica.lib
11780 produced by the Microsoft Visual C++ 6.0 compiler, and these
11781 values do not include any ACPI driver or OSPM code. The debug
11782 version of the code includes the debug output trace mechanism and
11783 has a much larger code and data size. Note that these values will
11784 vary depending on the efficiency of the compiler and the compiler
11785 options used during generation.
11788 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11789 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11791 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11792 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11797 Module loading/unloading fixes (John Cagle)
11800 3) iASL Compiler/Disassembler
11802 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
11804 Implemented support for the disassembly of all SMBus protocol
11805 keywords (SMBQuick, SMBWord, etc.)
11807 ----------------------------------------
11808 01 November 2002. Summary of changes for version 20021101.
11811 1) ACPI CA Core Subsystem:
11813 Fixed a problem where platforms that have a GPE1 block but no GPE0
11814 block were not handled correctly. This resulted in a "GPE
11815 overlap" error message. GPE0 is no longer required.
11817 Removed code added in the previous release that inserted nodes
11818 into the namespace in alphabetical order. This caused some side-
11819 effects on various machines. The root cause of the problem is
11820 still under investigation since in theory, the internal ordering
11821 of the namespace nodes should not matter.
11824 Enhanced error reporting for the case where a named object is not
11825 found during control method execution. The full ACPI namepath
11826 (name reference) of the object that was not found is displayed in
11829 Note: as a result of the overhaul of the namespace object types in
11830 the previous release, the namespace nodes for the predefined
11831 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
11832 instead of ACPI_TYPE_ANY. This simplifies the namespace
11833 management code but may affect code that walks the namespace tree
11834 looking for specific object types.
11836 Code and Data Size: Current core subsystem library sizes are shown
11837 below. These are the code and data sizes for the acpica.lib
11838 produced by the Microsoft Visual C++ 6.0 compiler, and these
11839 values do not include any ACPI driver or OSPM code. The debug
11840 version of the code includes the debug output trace mechanism and
11841 has a much larger code and data size. Note that these values will
11842 vary depending on the efficiency of the compiler and the compiler
11843 options used during generation.
11846 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
11847 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
11849 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11850 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11855 Fixed a problem introduced in the previous release where the
11856 Processor and Thermal objects were not recognized and installed in
11857 /proc. This was related to the scope type change described above.
11860 3) iASL Compiler/Disassembler
11862 Implemented the -g option to get all of the required ACPI tables
11863 from the registry and save them to files (Windows version of the
11864 compiler only.) The required tables are the FADT, FACS, and DSDT.
11866 Added ACPI table checksum validation during table disassembly in
11867 order to catch corrupted tables.
11870 ----------------------------------------
11871 22 October 2002. Summary of changes for version 20021022.
11873 1) ACPI CA Core Subsystem:
11875 Implemented a restriction on the Scope operator that the target
11876 must already exist in the namespace at the time the operator is
11877 encountered (during table load or method execution). In other
11878 words, forward references are not allowed and Scope() cannot
11879 create a new object. This changes the previous behavior where the
11880 interpreter would create the name if not found. This new behavior
11881 correctly enables the search-to-root algorithm during namespace
11882 lookup of the target name. Because of this upsearch, this fixes
11883 the known Compaq _SB_.OKEC problem and makes both the AML
11884 interpreter and iASL compiler compatible with other ACPI
11887 Completed a major overhaul of the internal ACPI object types for
11888 the ACPI Namespace and the associated operand objects. Many of
11889 these types had become obsolete with the introduction of the two-
11890 pass namespace load. This cleanup simplifies the code and makes
11891 the entire namespace load mechanism much clearer and easier to
11894 Improved debug output for tracking scope opening/closing to help
11895 diagnose scoping issues. The old scope name as well as the new
11896 scope name are displayed. Also improved error messages for
11897 problems with ASL Mutex objects and error messages for GPE
11900 Cleaned up the namespace dump code, removed obsolete code.
11902 All string output (for all namespace/object dumps) now uses the
11903 common ACPI string output procedure which handles escapes properly
11904 and does not emit non-printable characters.
11906 Fixed some issues with constants in the 64-bit version of the
11907 local C library (utclib.c)
11912 EC Driver: No longer attempts to acquire the Global Lock at
11916 3) iASL Compiler/Disassembler
11918 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
11919 2 opcodes outside of a control method. This means that the
11920 "executable" operators (versus the "namespace" operators) cannot
11921 be used at the table level; they can only be used within a control
11924 Implemented the restriction on the Scope() operator where the
11925 target must already exist in the namespace at the time the
11926 operator is encountered (during ASL compilation). In other words,
11927 forward references are not allowed and Scope() cannot create a new
11928 object. This makes the iASL compiler compatible with other ACPI
11929 implementations and makes the Scope() implementation adhere to the
11930 ACPI specification.
11932 Fixed a problem where namepath optimization for the Alias operator
11933 was optimizing the wrong path (of the two namepaths.) This caused
11934 a "Missing alias link" error message.
11936 Fixed a problem where an "unknown reserved name" warning could be
11937 incorrectly generated for names like "_SB" when the trailing
11938 underscore is not used in the original ASL.
11940 Fixed a problem where the reserved name check did not handle
11941 NamePaths with multiple NameSegs correctly. The first nameseg of
11942 the NamePath was examined instead of the last NameSeg.
11945 ----------------------------------------
11947 02 October 2002. Summary of changes for this release.
11950 1) ACPI CA Core Subsystem version 20021002:
11952 Fixed a problem where a store/copy of a string to an existing
11953 string did not always set the string length properly in the String
11956 Fixed a reported problem with the ToString operator where the
11957 behavior was identical to the ToHexString operator instead of just
11958 simply converting a raw buffer to a string data type.
11960 Fixed a problem where CopyObject and the other "explicit"
11961 conversion operators were not updating the internal namespace node
11962 type as part of the store operation.
11964 Fixed a memory leak during implicit source operand conversion
11965 where the original object was not deleted if it was converted to a
11966 new object of a different type.
11968 Enhanced error messages for all problems associated with namespace
11969 lookups. Common procedure generates and prints the lookup name as
11970 well as the formatted status.
11972 Completed implementation of a new design for the Alias support
11973 within the namespace. The existing design did not handle the case
11974 where a new object was assigned to one of the two names due to the
11975 use of an explicit conversion operator, resulting in the two names
11976 pointing to two different objects. The new design simply points
11977 the Alias name to the original name node - not to the object.
11978 This results in a level of indirection that must be handled in the
11979 name resolution mechanism.
11981 Code and Data Size: Current core subsystem library sizes are shown
11982 below. These are the code and data sizes for the acpica.lib
11983 produced by the Microsoft Visual C++ 6.0 compiler, and these
11984 values do not include any ACPI driver or OSPM code. The debug
11985 version of the code includes the debug output trace mechanism and
11986 has a larger code and data size. Note that these values will vary
11987 depending on the efficiency of the compiler and the compiler
11988 options used during generation.
11991 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
11992 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
11994 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
11995 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12000 Initialize thermal driver's timer before it is used. (Knut
12003 Allow handling negative celsius values. (Kochi Takayoshi)
12005 Fix thermal management and make trip points. R/W (Pavel Machek)
12007 Fix /proc/acpi/sleep. (P. Christeas)
12009 IA64 fixes. (David Mosberger)
12011 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12013 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12017 3) iASL Compiler/Disassembler
12019 Clarified some warning/error messages.
12022 ----------------------------------------
12023 18 September 2002. Summary of changes for this release.
12026 1) ACPI CA Core Subsystem version 20020918:
12028 Fixed a reported problem with reference chaining (via the Index()
12029 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12030 The definition of these operators includes the dereferencing of
12031 all chained references to return information on the base object.
12033 Fixed a problem with stores to indexed package elements - the
12034 existing code would not complete the store if an "implicit
12035 conversion" was not performed. In other words, if the existing
12036 object (package element) was to be replaced completely, the code
12037 didn't handle this case.
12039 Relaxed typechecking on the ASL "Scope" operator to allow the
12040 target name to refer to an object of type Integer, String, or
12041 Buffer, in addition to the scoping object types (Device,
12042 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12043 This allows existing AML code that has workarounds for a bug in
12044 Windows to function properly. A warning is issued, however. This
12045 affects both the AML interpreter and the iASL compiler. Below is
12046 an example of this type of ASL code:
12052 Fixed some reported problems with 64-bit integer support in the
12053 local implementation of C library functions (clib.c)
12058 Use ACPI fix map region instead of IOAPIC region, since it is
12059 undefined in non-SMP.
12061 Ensure that the SCI has the proper polarity and trigger, even on
12062 systems that do not have an interrupt override entry in the MADT.
12064 2.5 big driver reorganization (Pat Mochel)
12066 Use early table mapping code from acpitable.c (Andi Kleen)
12068 New blacklist entries (Andi Kleen)
12070 Blacklist improvements. Split blacklist code out into a separate
12071 file. Move checking the blacklist to very early. Previously, we
12072 would use ACPI tables, and then halfway through init, check the
12073 blacklist -- too late. Now, it's early enough to completely fall-
12077 3) iASL Compiler/Disassembler version 20020918:
12079 Fixed a problem where the typechecking code didn't know that an
12080 alias could point to a method. In other words, aliases were not
12081 being dereferenced during typechecking.
12084 ----------------------------------------
12085 29 August 2002. Summary of changes for this release.
12087 1) ACPI CA Core Subsystem Version 20020829:
12089 If the target of a Scope() operator already exists, it must be an
12090 object type that actually opens a scope -- such as a Device,
12091 Method, Scope, etc. This is a fatal runtime error. Similar error
12092 check has been added to the iASL compiler also.
12094 Tightened up the namespace load to disallow multiple names in the
12095 same scope. This previously was allowed if both objects were of
12096 the same type. (i.e., a lookup was the same as entering a new
12102 Ensure that the ACPI interrupt has the proper trigger and
12105 local_irq_disable is extraneous. (Matthew Wilcox)
12107 Make "acpi=off" actually do what it says, and not use the ACPI
12108 interpreter *or* the tables.
12110 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12114 3) iASL Compiler/Disassembler Version 20020829:
12116 Implemented namepath optimization for name declarations. For
12117 example, a declaration like "Method (\_SB_.ABCD)" would get
12118 optimized to "Method (ABCD)" if the declaration is within the
12119 \_SB_ scope. This optimization is in addition to the named
12120 reference path optimization first released in the previous
12121 version. This would seem to complete all possible optimizations
12122 for namepaths within the ASL/AML.
12124 If the target of a Scope() operator already exists, it must be an
12125 object type that actually opens a scope -- such as a Device,
12126 Method, Scope, etc.
12128 Implemented a check and warning for unreachable code in the same
12129 block below a Return() statement.
12131 Fixed a problem where the listing file was not generated if the
12132 compiler aborted if the maximum error count was exceeded (200).
12134 Fixed a problem where the typechecking of method return values was
12135 broken. This includes the check for a return value when the
12136 method is invoked as a TermArg (a return value is expected.)
12138 Fixed a reported problem where EOF conditions during a quoted
12139 string or comment caused a fault.
12142 ----------------------------------------
12143 15 August 2002. Summary of changes for this release.
12145 1) ACPI CA Core Subsystem Version 20020815:
12147 Fixed a reported problem where a Store to a method argument that
12148 contains a reference did not perform the indirect store correctly.
12149 This problem was created during the conversion to the new
12150 reference object model - the indirect store to a method argument
12151 code was not updated to reflect the new model.
12153 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12154 handle corner cases, and improve code legibility (Kochi Takayoshi)
12156 Fixed a problem with the pathname parsing for the carat (^)
12157 prefix. The heavy use of the carat operator by the new namepath
12158 optimization in the iASL compiler uncovered a problem with the AML
12159 interpreter handling of this prefix. In the case where one or
12160 more carats precede a single nameseg, the nameseg was treated as
12161 standalone and the search rule (to root) was inadvertently
12162 applied. This could cause both the iASL compiler and the
12163 interpreter to find the wrong object or to miss the error that
12164 should occur if the object does not exist at that exact pathname.
12166 Found and fixed the problem where the HP Pavilion DSDT would not
12167 load. This was a relatively minor tweak to the table loading code
12168 (a problem caused by the unexpected encounter with a method
12169 invocation not within a control method), but it does not solve the
12170 overall issue of the execution of AML code at the table level.
12171 This investigation is still ongoing.
12173 Code and Data Size: Current core subsystem library sizes are shown
12174 below. These are the code and data sizes for the acpica.lib
12175 produced by the Microsoft Visual C++ 6.0 compiler, and these
12176 values do not include any ACPI driver or OSPM code. The debug
12177 version of the code includes the debug output trace mechanism and
12178 has a larger code and data size. Note that these values will vary
12179 depending on the efficiency of the compiler and the compiler
12180 options used during generation.
12183 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12184 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12186 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12187 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12192 Remove redundant slab.h include (Brad Hards)
12194 Fix several bugs in thermal.c (Herbert Nachtnebel)
12196 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12198 Change acpi_system_suspend to use updated irq functions (Pavel
12201 Export acpi_get_firmware_table (Matthew Wilcox)
12203 Use proper root proc entry for ACPI (Kochi Takayoshi)
12205 Fix early-boot table parsing (Bjorn Helgaas)
12208 3) iASL Compiler/Disassembler
12210 Reworked the compiler options to make them more consistent and to
12211 use two-letter options where appropriate. We were running out of
12212 sensible letters. This may break some makefiles, so check the
12213 current options list by invoking the compiler with no parameters.
12215 Completed the design and implementation of the ASL namepath
12216 optimization option for the compiler. This option optimizes all
12217 references to named objects to the shortest possible path. The
12218 first attempt tries to utilize a single nameseg (4 characters) and
12219 the "search-to-root" algorithm used by the interpreter. If that
12220 cannot be used (because either the name is not in the search path
12221 or there is a conflict with another object with the same name),
12222 the pathname is optimized using the carat prefix (usually a
12223 shorter string than specifying the entire path from the root.)
12225 Implemented support to obtain the DSDT from the Windows registry
12226 (when the disassembly option is specified with no input file).
12227 Added this code as the implementation for AcpiOsTableOverride in
12228 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12229 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12230 function in the DOS OSL to make the disassembler truly OS
12233 Implemented a new option to disassemble and compile in one step.
12234 When used without an input filename, this option will grab the
12235 DSDT from the local machine, disassemble it, and compile it in one
12238 Added a warning message for invalid escapes (a backslash followed
12239 by any character other than the allowable escapes). This catches
12240 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12242 Also, there are numerous instances in the ACPI specification where
12245 Added a compiler option to disable all optimizations. This is
12246 basically the "compatibility mode" because by using this option,
12247 the AML code will come out exactly the same as other ASL
12250 Added error messages for incorrectly ordered dependent resource
12251 functions. This includes: missing EndDependentFn macro at end of
12252 dependent resource list, nested dependent function macros (both
12253 start and end), and missing StartDependentFn macro. These are
12254 common errors that should be caught at compile time.
12256 Implemented _OSI support for the disassembler and compiler. _OSI
12257 must be included in the namespace for proper disassembly (because
12258 the disassembler must know the number of arguments.)
12260 Added an "optimization" message type that is optional (off by
12261 default). This message is used for all optimizations - including
12262 constant folding, integer optimization, and namepath optimization.
12264 ----------------------------------------
12265 25 July 2002. Summary of changes for this release.
12268 1) ACPI CA Core Subsystem Version 20020725:
12270 The AML Disassembler has been enhanced to produce compilable ASL
12271 code and has been integrated into the iASL compiler (see below) as
12272 well as the single-step disassembly for the AML debugger and the
12273 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12274 resource templates and macros are fully supported. The
12275 disassembler has been tested on over 30 different AML files,
12276 producing identical AML when the resulting disassembled ASL file
12277 is recompiled with the same ASL compiler.
12279 Modified the Resource Manager to allow zero interrupts and zero
12280 dma channels during the GetCurrentResources call. This was
12281 causing problems on some platforms.
12283 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12284 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12287 Code and Data Size: Current core subsystem library sizes are shown
12288 below. These are the code and data sizes for the acpica.lib
12289 produced by the Microsoft Visual C++ 6.0 compiler, and these
12290 values do not include any ACPI driver or OSPM code. The debug
12291 version of the code includes the debug output trace mechanism and
12292 has a larger code and data size. Note that these values will vary
12293 depending on the efficiency of the compiler and the compiler
12294 options used during generation.
12297 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12298 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12300 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12301 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12306 Fixed a panic in the EC driver (Dominik Brodowski)
12308 Implemented checksum of the R/XSDT itself during Linux table scan
12314 The AML disassembler is integrated into the compiler. The "-d"
12315 option invokes the disassembler to completely disassemble an
12316 input AML file, producing as output a text ASL file with the
12317 extension ".dsl" (to avoid name collisions with existing .asl
12318 source files.) A future enhancement will allow the disassembler
12319 to obtain the BIOS DSDT from the registry under Windows.
12321 Fixed a problem with the VendorShort and VendorLong resource
12322 descriptors where an invalid AML sequence was created.
12324 Implemented a fix for BufferData term in the ASL parser. It was
12325 inadvertently defined twice, allowing invalid syntax to pass and
12326 causing reduction conflicts.
12328 Fixed a problem where the Ones opcode could get converted to a
12329 value of zero if "Ones" was used where a byte, word or dword value
12330 was expected. The 64-bit value is now truncated to the correct
12331 size with the correct value.
12335 ----------------------------------------
12336 02 July 2002. Summary of changes for this release.
12339 1) ACPI CA Core Subsystem Version 20020702:
12341 The Table Manager code has been restructured to add several new
12342 features. Tables that are not required by the core subsystem
12343 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
12344 validated in any way and are returned from AcpiGetFirmwareTable if
12345 requested. The AcpiOsTableOverride interface is now called for
12346 each table that is loaded by the subsystem in order to allow the
12347 host to override any table it chooses. Previously, only the DSDT
12348 could be overridden. Added one new files, tbrsdt.c and
12351 Fixed a problem with the conversion of internal package objects to
12352 external objects (when a package is returned from a control
12353 method.) The return buffer length was set to zero instead of the
12354 proper length of the package object.
12356 Fixed a reported problem with the use of the RefOf and DeRefOf
12357 operators when passing reference arguments to control methods. A
12358 new type of Reference object is used internally for references
12359 produced by the RefOf operator.
12361 Added additional error messages in the Resource Manager to explain
12362 AE_BAD_DATA errors when they occur during resource parsing.
12364 Split the AcpiEnableSubsystem into two primitives to enable a
12365 finer granularity initialization sequence. These two calls should
12366 be called in this order: AcpiEnableSubsystem (flags),
12367 AcpiInitializeObjects (flags). The flags parameter remains the
12373 Updated the ACPI utilities module to understand the new style of
12374 fully resolved package objects that are now returned from the core
12375 subsystem. This eliminates errors of the form:
12377 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
12378 acpi_utils-0430 [145] acpi_evaluate_reference:
12379 Invalid element in package (not a device reference)
12381 The method evaluation utility uses the new buffer allocation
12382 scheme instead of calling AcpiEvaluate Object twice.
12384 Added support for ECDT. This allows the use of the Embedded
12386 Controller before the namespace has been fully initialized, which
12387 is necessary for ACPI 2.0 support, and for some laptops to
12388 initialize properly. (Laptops using ECDT are still rare, so only
12389 limited testing was performed of the added functionality.)
12391 Fixed memory leaks in the EC driver.
12393 Eliminated a brittle code structure in acpi_bus_init().
12395 Eliminated the acpi_evaluate() helper function in utils.c. It is
12396 no longer needed since acpi_evaluate_object can optionally
12397 allocate memory for the return object.
12399 Implemented fix for keyboard hang when getting battery readings on
12400 some systems (Stephen White)
12402 PCI IRQ routing update (Dominik Brodowski)
12404 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
12407 ----------------------------------------
12408 11 June 2002. Summary of changes for this release.
12411 1) ACPI CA Core Subsystem Version 20020611:
12413 Fixed a reported problem where constants such as Zero and One
12414 appearing within _PRT packages were not handled correctly within
12415 the resource manager code. Originally reported against the ASL
12416 compiler because the code generator now optimizes integers to
12417 their minimal AML representation (i.e. AML constants if possible.)
12418 The _PRT code now handles all AML constant opcodes correctly
12419 (Zero, One, Ones, Revision).
12421 Fixed a problem with the Concatenate operator in the AML
12422 interpreter where a buffer result object was incorrectly marked as
12423 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
12425 All package sub-objects are now fully resolved before they are
12426 returned from the external ACPI interfaces. This means that name
12427 strings are resolved to object handles, and constant operators
12428 (Zero, One, Ones, Revision) are resolved to Integers.
12430 Implemented immediate resolution of the AML Constant opcodes
12431 (Zero, One, Ones, Revision) to Integer objects upon detection
12432 within the AML stream. This has simplified and reduced the
12433 generated code size of the subsystem by eliminating about 10
12434 switch statements for these constants (which previously were
12435 contained in Reference objects.) The complicating issues are that
12436 the Zero opcode is used as a "placeholder" for unspecified
12437 optional target operands and stores to constants are defined to be
12440 Code and Data Size: Current core subsystem library sizes are shown
12441 below. These are the code and data sizes for the acpica.lib
12442 produced by the Microsoft Visual C++ 6.0 compiler, and these
12443 values do not include any ACPI driver or OSPM code. The debug
12444 version of the code includes the debug output trace mechanism and
12445 has a larger code and data size. Note that these values will vary
12446 depending on the efficiency of the compiler and the compiler
12447 options used during generation.
12450 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12451 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12453 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12454 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12460 Added preliminary support for obtaining _TRA data for PCI root
12461 bridges (Bjorn Helgaas).
12464 3) iASL Compiler Version X2046:
12466 Fixed a problem where the "_DDN" reserved name was defined to be a
12467 control method with one argument. There are no arguments, and
12468 _DDN does not have to be a control method.
12470 Fixed a problem with the Linux version of the compiler where the
12471 source lines printed with error messages were the wrong lines.
12472 This turned out to be the "LF versus CR/LF" difference between
12473 Windows and Unix. This appears to be the longstanding issue
12474 concerning listing output and error messages.
12476 Fixed a problem with the Linux version of compiler where opcode
12477 names within error messages were wrong. This was caused by a
12478 slight difference in the output of the Flex tool on Linux versus
12481 Fixed a problem with the Linux compiler where the hex output files
12482 contained some garbage data caused by an internal buffer overrun.
12485 ----------------------------------------
12486 17 May 2002. Summary of changes for this release.
12489 1) ACPI CA Core Subsystem Version 20020517:
12491 Implemented a workaround to an BIOS bug discovered on the HP
12492 OmniBook where the FADT revision number and the table size are
12493 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
12494 behavior is to fallback to using only the ACPI 1.0 fields of the
12495 FADT if the table is too small to be a ACPI 2.0 table as claimed
12496 by the revision number. Although this is a BIOS bug, this is a
12497 case where the workaround is simple enough and with no side
12498 effects, so it seemed prudent to add it. A warning message is
12501 Implemented minimum size checks for the fixed-length ACPI tables -
12502 - the FADT and FACS, as well as consistency checks between the
12503 revision number and the table size.
12505 Fixed a reported problem in the table override support where the
12506 new table pointer was incorrectly treated as a physical address
12507 instead of a logical address.
12509 Eliminated the use of the AE_AML_ERROR exception and replaced it
12510 with more descriptive codes.
12512 Fixed a problem where an exception would occur if an ASL Field was
12513 defined with no named Field Units underneath it (used by some
12516 Code and Data Size: Current core subsystem library sizes are shown
12517 below. These are the code and data sizes for the acpica.lib
12518 produced by the Microsoft Visual C++ 6.0 compiler, and these
12519 values do not include any ACPI driver or OSPM code. The debug
12520 version of the code includes the debug output trace mechanism and
12521 has a larger code and data size. Note that these values will vary
12522 depending on the efficiency of the compiler and the compiler
12523 options used during generation.
12526 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12527 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12529 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12530 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12536 Much work done on ACPI init (MADT and PCI IRQ routing support).
12537 (Paul D. and Dominik Brodowski)
12539 Fix PCI IRQ-related panic on boot (Sam Revitch)
12541 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
12543 Fix "MHz" typo (Dominik Brodowski)
12545 Fix RTC year 2000 issue (Dominik Brodowski)
12547 Preclude multiple button proc entries (Eric Brunet)
12549 Moved arch-specific code out of include/platform/aclinux.h
12551 3) iASL Compiler Version X2044:
12553 Implemented error checking for the string used in the EISAID macro
12554 (Usually used in the definition of the _HID object.) The code now
12555 strictly enforces the PnP format - exactly 7 characters, 3
12556 uppercase letters and 4 hex digits.
12558 If a raw string is used in the definition of the _HID object
12559 (instead of the EISAID macro), the string must contain all
12560 alphanumeric characters (e.g., "*PNP0011" is not allowed because
12563 Implemented checking for invalid use of ACPI reserved names for
12564 most of the name creation operators (Name, Device, Event, Mutex,
12565 OperationRegion, PowerResource, Processor, and ThermalZone.)
12566 Previously, this check was only performed for control methods.
12568 Implemented an additional check on the Name operator to emit an
12569 error if a reserved name that must be implemented in ASL as a
12570 control method is used. We know that a reserved name must be a
12571 method if it is defined with input arguments.
12573 The warning emitted when a namespace object reference is not found
12574 during the cross reference phase has been changed into an error.
12575 The "External" directive should be used for names defined in other
12579 4) Tools and Utilities
12581 The 16-bit tools (adump16 and aexec16) have been regenerated and
12584 Fixed a problem with the output of both acpidump and adump16 where
12585 the indentation of closing parentheses and brackets was not
12587 aligned properly with the parent block.
12590 ----------------------------------------
12591 03 May 2002. Summary of changes for this release.
12594 1) ACPI CA Core Subsystem Version 20020503:
12596 Added support a new OSL interface that allows the host operating
12598 system software to override the DSDT found in the firmware -
12599 AcpiOsTableOverride. With this interface, the OSL can examine the
12600 version of the firmware DSDT and replace it with a different one
12603 Added new external interfaces for accessing ACPI registers from
12604 device drivers and other system software - AcpiGetRegister and
12605 AcpiSetRegister. This was simply an externalization of the
12606 existing AcpiHwBitRegister interfaces.
12608 Fixed a regression introduced in the previous build where the
12609 ASL/AML CreateField operator always returned an error,
12610 "destination must be a NS Node".
12612 Extended the maximum time (before failure) to successfully enable
12613 ACPI mode to 3 seconds.
12615 Code and Data Size: Current core subsystem library sizes are shown
12616 below. These are the code and data sizes for the acpica.lib
12617 produced by the Microsoft Visual C++ 6.0 compiler, and these
12618 values do not include any ACPI driver or OSPM code. The debug
12619 version of the code includes the debug output trace mechanism and
12620 has a larger code and data size. Note that these values will vary
12621 depending on the efficiency of the compiler and the compiler
12622 options used during generation.
12625 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12626 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12628 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12629 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12634 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
12635 free. While 3 out of 4 of our in-house systems work fine, the last
12636 one still hangs when testing the LAPIC timer.
12638 Renamed many files in 2.5 kernel release to omit "acpi_" from the
12641 Added warning on boot for Presario 711FR.
12643 Sleep improvements (Pavel Machek)
12645 ACPI can now be built without CONFIG_PCI enabled.
12647 IA64: Fixed memory map functions (JI Lee)
12650 3) iASL Compiler Version X2043:
12652 Added support to allow the compiler to be integrated into the MS
12653 VC++ development environment for one-button compilation of single
12654 files or entire projects -- with error-to-source-line mapping.
12656 Implemented support for compile-time constant folding for the
12657 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
12658 specification. This allows the ASL writer to use expressions
12659 instead of Integer/Buffer/String constants in terms that must
12660 evaluate to constants at compile time and will also simplify the
12661 emitted AML in any such sub-expressions that can be folded
12662 (evaluated at compile-time.) This increases the size of the
12663 compiler significantly because a portion of the ACPI CA AML
12664 interpreter is included within the compiler in order to pre-
12665 evaluate constant expressions.
12668 Fixed a problem with the "Unicode" ASL macro that caused the
12669 compiler to fault. (This macro is used in conjunction with the
12670 _STR reserved name.)
12672 Implemented an AML opcode optimization to use the Zero, One, and
12673 Ones opcodes where possible to further reduce the size of integer
12674 constants and thus reduce the overall size of the generated AML
12677 Implemented error checking for new reserved terms for ACPI version
12680 Implemented the -qr option to display the current list of ACPI
12681 reserved names known to the compiler.
12683 Implemented the -qc option to display the current list of ASL
12684 operators that are allowed within constant expressions and can
12685 therefore be folded at compile time if the operands are constants.
12690 Updated the Programmer's Reference for new interfaces, data types,
12691 and memory allocation model options.
12693 Updated the iASL Compiler User Reference to apply new format and
12694 add information about new features and options.
12696 ----------------------------------------
12697 19 April 2002. Summary of changes for this release.
12699 1) ACPI CA Core Subsystem Version 20020419:
12701 The source code base for the Core Subsystem has been completely
12702 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
12703 versions. The Lint option files used are included in the
12704 /acpi/generate/lint directory.
12706 Implemented enhanced status/error checking across the entire
12707 Hardware manager subsystem. Any hardware errors (reported from
12708 the OSL) are now bubbled up and will abort a running control
12712 Fixed a problem where the per-ACPI-table integer width (32 or 64)
12713 was stored only with control method nodes, causing a fault when
12714 non-control method code was executed during table loading. The
12715 solution implemented uses a global variable to indicate table
12716 width across the entire ACPI subsystem. Therefore, ACPI CA does
12717 not support mixed integer widths across different ACPI tables
12720 Fixed a problem where NULL extended fields (X fields) in an ACPI
12721 2.0 ACPI FADT caused the table load to fail. Although the
12722 existing ACPI specification is a bit fuzzy on this topic, the new
12723 behavior is to fall back on a ACPI 1.0 field if the corresponding
12724 ACPI 2.0 X field is zero (even though the table revision indicates
12725 a full ACPI 2.0 table.) The ACPI specification will be updated to
12726 clarify this issue.
12728 Fixed a problem with the SystemMemory operation region handler
12729 where memory was always accessed byte-wise even if the AML-
12730 specified access width was larger than a byte. This caused
12731 problems on systems with memory-mapped I/O. Memory is now
12732 accessed with the width specified. On systems that do not support
12733 non-aligned transfers, a check is made to guarantee proper address
12734 alignment before proceeding in order to avoid an AML-caused
12735 alignment fault within the kernel.
12738 Fixed a problem with the ExtendedIrq resource where only one byte
12739 of the 4-byte Irq field was extracted.
12741 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
12742 function was out of date and required a rewrite.
12744 Code and Data Size: Current core subsystem library sizes are shown
12745 below. These are the code and data sizes for the acpica.lib
12746 produced by the Microsoft Visual C++ 6.0 compiler, and these
12747 values do not include any ACPI driver or OSPM code. The debug
12748 version of the code includes the debug output trace mechanism and
12749 has a larger code and data size. Note that these values will vary
12750 depending on the efficiency of the compiler and the compiler
12751 options used during generation.
12754 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12755 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12757 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12758 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12763 PCI IRQ routing fixes (Dominik Brodowski)
12766 3) iASL Compiler Version X2042:
12768 Implemented an additional compile-time error check for a field
12769 unit whose size + minimum access width would cause a run-time
12770 access beyond the end-of-region. Previously, only the field size
12771 itself was checked.
12773 The Core subsystem and iASL compiler now share a common parse
12774 object in preparation for compile-time evaluation of the type
12775 3/4/5 ASL operators.
12778 ----------------------------------------
12779 Summary of changes for this release: 03_29_02
12781 1) ACPI CA Core Subsystem Version 20020329:
12783 Implemented support for late evaluation of TermArg operands to
12784 Buffer and Package objects. This allows complex expressions to be
12785 used in the declarations of these object types.
12787 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
12788 1.0, if the field was larger than 32 bits, it was returned as a
12789 buffer - otherwise it was returned as an integer. In ACPI 2.0,
12790 the field is returned as a buffer only if the field is larger than
12791 64 bits. The TableRevision is now considered when making this
12792 conversion to avoid incompatibility with existing ASL code.
12794 Implemented logical addressing for AcpiOsGetRootPointer. This
12795 allows an RSDP with either a logical or physical address. With
12796 this support, the host OS can now override all ACPI tables with
12797 one logical RSDP. Includes implementation of "typed" pointer
12798 support to allow a common data type for both physical and logical
12799 pointers internally. This required a change to the
12800 AcpiOsGetRootPointer interface.
12802 Implemented the use of ACPI 2.0 Generic Address Structures for all
12803 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
12804 mapped I/O for these ACPI features.
12806 Initialization now ignores not only non-required tables (All
12807 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
12808 not validate the table headers of unrecognized tables.
12810 Fixed a problem where a notify handler could only be
12811 installed/removed on an object of type Device. All "notify"
12813 objects are now supported -- Devices, Processor, Power, and
12816 Removed most verbosity from the ACPI_DB_INFO debug level. Only
12817 critical information is returned when this debug level is enabled.
12819 Code and Data Size: Current core subsystem library sizes are shown
12820 below. These are the code and data sizes for the acpica.lib
12821 produced by the Microsoft Visual C++ 6.0 compiler, and these
12822 values do not include any ACPI driver or OSPM code. The debug
12823 version of the code includes the debug output trace mechanism and
12824 has a larger code and data size. Note that these values will vary
12825 depending on the efficiency of the compiler and the compiler
12826 options used during generation.
12829 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
12830 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
12832 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12833 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12838 The processor driver (acpi_processor.c) now fully supports ACPI
12839 2.0-based processor performance control (e.g. Intel(R)
12840 SpeedStep(TM) technology) Note that older laptops that only have
12841 the Intel "applet" interface are not supported through this. The
12842 'limit' and 'performance' interface (/proc) are fully functional.
12843 [Note that basic policy for controlling performance state
12844 transitions will be included in the next version of ospmd.] The
12845 idle handler was modified to more aggressively use C2, and PIIX4
12846 errata handling underwent a complete overhaul (big thanks to
12847 Dominik Brodowski).
12849 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
12850 based devices in the ACPI namespace are now dynamically bound
12851 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
12852 This allows, among other things, ACPI to resolve bus numbers for
12853 subordinate PCI bridges.
12855 Enhanced PCI IRQ routing to get the proper bus number for _PRT
12856 entries defined underneath PCI bridges.
12858 Added IBM 600E to bad bios list due to invalid _ADR value for
12859 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
12861 In the process of adding full MADT support (e.g. IOAPIC) for IA32
12862 (acpi.c, mpparse.c) -- stay tuned.
12864 Added back visual differentiation between fixed-feature and
12865 control-method buttons in dmesg. Buttons are also subtyped (e.g.
12866 button/power/PWRF) to simplify button identification.
12868 We no longer use -Wno-unused when compiling debug. Please ignore
12869 any "_THIS_MODULE defined but not used" messages.
12871 Can now shut down the system using "magic sysrq" key.
12874 3) iASL Compiler version 2041:
12876 Fixed a problem where conversion errors for hex/octal/decimal
12877 constants were not reported.
12879 Implemented a fix for the General Register template Address field.
12880 This field was 8 bits when it should be 64.
12882 Fixed a problem where errors/warnings were no longer being emitted
12883 within the listing output file.
12885 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
12886 exactly 4 characters, alphanumeric only.
12891 ----------------------------------------
12892 Summary of changes for this release: 03_08_02
12895 1) ACPI CA Core Subsystem Version 20020308:
12897 Fixed a problem with AML Fields where the use of the "AccessAny"
12898 keyword could cause an interpreter error due to attempting to read
12899 or write beyond the end of the parent Operation Region.
12901 Fixed a problem in the SystemMemory Operation Region handler where
12902 an attempt was made to map memory beyond the end of the region.
12903 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
12904 errors on some Linux systems.
12906 Fixed a problem where the interpreter/namespace "search to root"
12907 algorithm was not functioning for some object types. Relaxed the
12908 internal restriction on the search to allow upsearches for all
12909 external object types as well as most internal types.
12914 We now use safe_halt() macro versus individual calls to sti | hlt.
12916 Writing to the processor limit interface should now work. "echo 1"
12917 will increase the limit, 2 will decrease, and 0 will reset to the
12924 Fixed segfault on Linux version.
12927 ----------------------------------------
12928 Summary of changes for this release: 02_25_02
12930 1) ACPI CA Core Subsystem:
12933 Fixed a problem where the GPE bit masks were not initialized
12934 properly, causing erratic GPE behavior.
12936 Implemented limited support for multiple calling conventions. The
12937 code can be generated with either the VPL (variable parameter
12938 list, or "C") convention, or the FPL (fixed parameter list, or
12939 "Pascal") convention. The core subsystem is about 3.4% smaller
12940 when generated with FPL.
12945 Re-add some /proc/acpi/event functionality that was lost during
12948 Resolved issue with /proc events for fixed-feature buttons showing
12949 up as the system device.
12951 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
12953 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
12955 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
12957 Fixed limit interface & usage to fix bugs with passive cooling
12960 Restructured PRT support.
12963 ----------------------------------------
12964 Summary of changes for this label: 02_14_02
12967 1) ACPI CA Core Subsystem:
12969 Implemented support in AcpiLoadTable to allow loading of FACS and
12972 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
12973 been removed. All 64-bit platforms should be migrated to the ACPI
12974 2.0 tables. The actbl71.h header has been removed from the source
12977 All C macros defined within the subsystem have been prefixed with
12978 "ACPI_" to avoid collision with other system include files.
12980 Removed the return value for the two AcpiOsPrint interfaces, since
12981 it is never used and causes lint warnings for ignoring the return
12984 Added error checking to all internal mutex acquire and release
12985 calls. Although a failure from one of these interfaces is
12986 probably a fatal system error, these checks will cause the
12987 immediate abort of the currently executing method or interface.
12989 Fixed a problem where the AcpiSetCurrentResources interface could
12990 fault. This was a side effect of the deployment of the new memory
12993 Fixed a couple of problems with the Global Lock support introduced
12994 in the last major build. The "common" (1.0/2.0) internal FACS was
12995 being overwritten with the FACS signature and clobbering the
12996 Global Lock pointer. Also, the actual firmware FACS was being
12997 unmapped after construction of the "common" FACS, preventing
12998 access to the actual Global Lock field within it. The "common"
12999 internal FACS is no longer installed as an actual ACPI table; it
13000 is used simply as a global.
13002 Code and Data Size: Current core subsystem library sizes are shown
13003 below. These are the code and data sizes for the acpica.lib
13004 produced by the Microsoft Visual C++ 6.0 compiler, and these
13005 values do not include any ACPI driver or OSPM code. The debug
13006 version of the code includes the debug output trace mechanism and
13007 has a larger code and data size. Note that these values will vary
13008 depending on the efficiency of the compiler and the compiler
13009 options used during generation.
13011 Previous Release (02_07_01)
13012 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13013 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13015 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13016 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13021 Updated Linux-specific code for core macro and OSL interface
13022 changes described above.
13024 Improved /proc/acpi/event. It now can be opened only once and has
13025 proper poll functionality.
13027 Fixed and restructured power management (acpi_bus).
13029 Only create /proc "view by type" when devices of that class exist.
13031 Fixed "charging/discharging" bug (and others) in acpi_battery.
13033 Improved thermal zone code.
13036 3) ASL Compiler, version X2039:
13039 Implemented the new compiler restriction on ASL String hex/octal
13040 escapes to non-null, ASCII values. An error results if an invalid
13041 value is used. (This will require an ACPI 2.0 specification
13044 AML object labels that are output to the optional C and ASM source
13045 are now prefixed with both the ACPI table signature and table ID
13046 to help guarantee uniqueness within a large BIOS project.
13049 ----------------------------------------
13050 Summary of changes for this label: 02_01_02
13052 1) ACPI CA Core Subsystem:
13054 ACPI 2.0 support is complete in the entire Core Subsystem and the
13055 ASL compiler. All new ACPI 2.0 operators are implemented and all
13056 other changes for ACPI 2.0 support are complete. With
13057 simultaneous code and data optimizations throughout the subsystem,
13058 ACPI 2.0 support has been implemented with almost no additional
13059 cost in terms of code and data size.
13061 Implemented a new mechanism for allocation of return buffers. If
13062 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13063 be allocated on behalf of the caller. Consolidated all return
13064 buffer validation and allocation to a common procedure. Return
13065 buffers will be allocated via the primary OSL allocation interface
13066 since it appears that a separate pool is not needed by most users.
13067 If a separate pool is required for these buffers, the caller can
13068 still use the original mechanism and pre-allocate the buffer(s).
13070 Implemented support for string operands within the DerefOf
13073 Restructured the Hardware and Event managers to be table driven,
13074 simplifying the source code and reducing the amount of generated
13077 Split the common read/write low-level ACPI register bitfield
13078 procedure into a separate read and write, simplifying the code
13081 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13082 used only a handful of times and didn't have enough critical mass
13083 for a separate interface. Replaced with a common calloc procedure
13086 Fixed a reported problem with the GPE number mapping mechanism
13087 that allows GPE1 numbers to be non-contiguous with GPE0.
13088 Reorganized the GPE information and shrunk a large array that was
13089 originally large enough to hold info for all possible GPEs (256)
13090 to simply large enough to hold all GPEs up to the largest GPE
13091 number on the machine.
13093 Fixed a reported problem with resource structure alignment on 64-
13096 Changed the AcpiEnableEvent and AcpiDisableEvent external
13097 interfaces to not require any flags for the common case of
13098 enabling/disabling a GPE.
13100 Implemented support to allow a "Notify" on a Processor object.
13102 Most TBDs in comments within the source code have been resolved
13106 Fixed a problem in the interpreter where a standalone parent
13107 prefix (^) was not handled correctly in the interpreter and
13110 Removed obsolete and unnecessary GPE save/restore code.
13112 Implemented Field support in the ASL Load operator. This allows a
13113 table to be loaded from a named field, in addition to loading a
13114 table directly from an Operation Region.
13116 Implemented timeout and handle support in the external Global Lock
13119 Fixed a problem in the AcpiDump utility where pathnames were no
13120 longer being generated correctly during the dump of named objects.
13122 Modified the AML debugger to give a full display of if/while
13123 predicates instead of just one AML opcode at a time. (The
13124 predicate can have several nested ASL statements.) The old method
13125 was confusing during single stepping.
13127 Code and Data Size: Current core subsystem library sizes are shown
13128 below. These are the code and data sizes for the acpica.lib
13129 produced by the Microsoft Visual C++ 6.0 compiler, and these
13130 values do not include any ACPI driver or OSPM code. The debug
13131 version of the code includes the debug output trace mechanism and
13132 has a larger code and data size. Note that these values will vary
13133 depending on the efficiency of the compiler and the compiler
13134 options used during generation.
13136 Previous Release (12_18_01)
13137 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13138 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13140 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13141 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13145 Implemented fix for PIIX reverse throttling errata (Processor
13148 Added new Limit interface (Processor and Thermal drivers)
13150 New thermal policy (Thermal driver)
13152 Many updates to /proc
13154 Battery "low" event support (Battery driver)
13156 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13158 IA32 - IA64 initialization unification, no longer experimental
13160 Menuconfig options redesigned
13162 3) ASL Compiler, version X2037:
13164 Implemented several new output features to simplify integration of
13165 AML code into firmware: 1) Output the AML in C source code with
13166 labels for each named ASL object. The original ASL source code
13167 is interleaved as C comments. 2) Output the AML in ASM source code
13168 with labels and interleaved ASL source. 3) Output the AML in
13169 raw hex table form, in either C or ASM.
13171 Implemented support for optional string parameters to the
13172 LoadTable operator.
13174 Completed support for embedded escape sequences within string
13175 literals. The compiler now supports all single character escapes
13176 as well as the Octal and Hex escapes. Note: the insertion of a
13177 null byte into a string literal (via the hex/octal escape) causes
13178 the string to be immediately terminated. A warning is issued.
13180 Fixed a problem where incorrect AML was generated for the case
13181 where an ASL namepath consists of a single parent prefix (
13183 ) with no trailing name segments.
13185 The compiler has been successfully generated with a 64-bit C
13191 ----------------------------------------
13192 Summary of changes for this label: 12_18_01
13196 Enhanced blacklist with reason and severity fields. Any table's
13197 signature may now be used to identify a blacklisted system.
13199 Call _PIC control method to inform the firmware which interrupt
13200 model the OS is using. Turn on any disabled link devices.
13202 Cleaned up busmgr /proc error handling (Andreas Dilger)
13204 2) ACPI CA Core Subsystem:
13206 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13209 Completed implementation of the ACPI 2.0 "Continue",
13210 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13211 operators. All new ACPI 2.0 operators are now implemented in both
13212 the ASL compiler and the AML interpreter. The only remaining ACPI
13213 2.0 task is support for the String data type in the DerefOf
13214 operator. Fixed a problem with AcquireMutex where the status code
13215 was lost if the caller had to actually wait for the mutex.
13217 Increased the maximum ASL Field size from 64K bits to 4G bits.
13219 Completed implementation of the external Global Lock interfaces --
13220 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13221 Handler parameters were added.
13223 Completed another pass at removing warnings and issues when
13224 compiling with 64-bit compilers. The code now compiles cleanly
13225 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13226 add and subtract (diff) macros have changed considerably.
13229 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13230 64-bit platforms, 32-bits on all others. This type is used
13231 wherever memory allocation and/or the C sizeof() operator is used,
13232 and affects the OSL memory allocation interfaces AcpiOsAllocate
13233 and AcpiOsCallocate.
13235 Implemented sticky user breakpoints in the AML debugger.
13237 Code and Data Size: Current core subsystem library sizes are shown
13238 below. These are the code and data sizes for the acpica.lib
13239 produced by the Microsoft Visual C++ 6.0 compiler, and these
13240 values do not include any ACPI driver or OSPM code. The debug
13241 version of the code includes the debug output trace mechanism and
13242 has a larger code and data size. Note that these values will vary
13243 depending on the efficiency of the compiler and the compiler
13244 options used during generation.
13246 Previous Release (12_05_01)
13247 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13248 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13250 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13251 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13253 3) ASL Compiler, version X2034:
13255 Now checks for (and generates an error if detected) the use of a
13256 Break or Continue statement without an enclosing While statement.
13259 Successfully generated the compiler with the Intel 64-bit C
13262 ----------------------------------------
13263 Summary of changes for this label: 12_05_01
13265 1) ACPI CA Core Subsystem:
13267 The ACPI 2.0 CopyObject operator is fully implemented. This
13268 operator creates a new copy of an object (and is also used to
13269 bypass the "implicit conversion" mechanism of the Store operator.)
13271 The ACPI 2.0 semantics for the SizeOf operator are fully
13272 implemented. The change is that performing a SizeOf on a
13273 reference object causes an automatic dereference of the object to
13274 tha actual value before the size is evaluated. This behavior was
13275 undefined in ACPI 1.0.
13277 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13278 have been implemented. The interrupt polarity and mode are now
13281 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13282 appearing in Package objects were not properly converted to
13283 integers when the internal Package was converted to an external
13284 object (via the AcpiEvaluateObject interface.)
13286 Fixed a problem with the namespace object deletion mechanism for
13287 objects created by control methods. There were two parts to this
13288 problem: 1) Objects created during the initialization phase method
13289 parse were not being deleted, and 2) The object owner ID mechanism
13290 to track objects was broken.
13292 Fixed a problem where the use of the ASL Scope operator within a
13293 control method would result in an invalid opcode exception.
13295 Fixed a problem introduced in the previous label where the buffer
13296 length required for the _PRT structure was not being returned
13299 Code and Data Size: Current core subsystem library sizes are shown
13300 below. These are the code and data sizes for the acpica.lib
13301 produced by the Microsoft Visual C++ 6.0 compiler, and these
13302 values do not include any ACPI driver or OSPM code. The debug
13303 version of the code includes the debug output trace mechanism and
13304 has a larger code and data size. Note that these values will vary
13305 depending on the efficiency of the compiler and the compiler
13306 options used during generation.
13308 Previous Release (11_20_01)
13309 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13310 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13313 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13314 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13318 Updated all files to apply cleanly against 2.4.16.
13320 Added basic PCI Interrupt Routing Table (PRT) support for IA32
13321 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
13322 version supports both static and dyanmic PRT entries, but dynamic
13323 entries are treated as if they were static (not yet
13324 reconfigurable). Architecture- specific code to use this data is
13325 absent on IA32 but should be available shortly.
13327 Changed the initialization sequence to start the ACPI interpreter
13328 (acpi_init) prior to initialization of the PCI driver (pci_init)
13329 in init/main.c. This ordering is required to support PRT and
13330 facilitate other (future) enhancement. A side effect is that the
13331 ACPI bus driver and certain device drivers can no longer be loaded
13334 Modified the 'make menuconfig' options to allow PCI Interrupt
13335 Routing support to be included without the ACPI Bus and other
13338 3) ASL Compiler, version X2033:
13340 Fixed some issues with the use of the new CopyObject and
13341 DataTableRegion operators. Both are fully functional.
13343 ----------------------------------------
13344 Summary of changes for this label: 11_20_01
13346 20 November 2001. Summary of changes for this release.
13348 1) ACPI CA Core Subsystem:
13350 Updated Index support to match ACPI 2.0 semantics. Storing a
13351 Integer, String, or Buffer to an Index of a Buffer will store only
13352 the least-significant byte of the source to the Indexed buffer
13353 byte. Multiple writes are not performed.
13355 Fixed a problem where the access type used in an AccessAs ASL
13356 operator was not recorded correctly into the field object.
13358 Fixed a problem where ASL Event objects were created in a
13359 signalled state. Events are now created in an unsignalled state.
13361 The internal object cache is now purged after table loading and
13362 initialization to reduce the use of dynamic kernel memory -- on
13363 the assumption that object use is greatest during the parse phase
13364 of the entire table (versus the run-time use of individual control
13367 ACPI 2.0 variable-length packages are now fully operational.
13369 Code and Data Size: Code and Data optimizations have permitted new
13370 feature development with an actual reduction in the library size.
13371 Current core subsystem library sizes are shown below. These are
13372 the code and data sizes for the acpica.lib produced by the
13373 Microsoft Visual C++ 6.0 compiler, and these values do not include
13374 any ACPI driver or OSPM code. The debug version of the code
13375 includes the debug output trace mechanism and has a larger code
13376 and data size. Note that these values will vary depending on the
13377 efficiency of the compiler and the compiler options used during
13380 Previous Release (11_09_01):
13381 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13382 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13385 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13386 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13390 Enhanced the ACPI boot-time initialization code to allow the use
13391 of Local APIC tables for processor enumeration on IA-32, and to
13392 pave the way for a fully MPS-free boot (on SMP systems) in the
13393 near future. This functionality replaces
13394 arch/i386/kernel/acpitables.c, which was introduced in an earlier
13395 2.4.15-preX release. To enable this feature you must add
13396 "acpi_boot=on" to the kernel command line -- see the help entry
13397 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
13400 Restructured the configuration options to allow boot-time table
13401 parsing support without inclusion of the ACPI Interpreter (and
13404 NOTE: This release does not include fixes for the reported events,
13405 power-down, and thermal passive cooling issues (coming soon).
13409 Added additional typechecking for Fields within restricted access
13410 Operation Regions. All fields within EC and CMOS regions must be
13411 declared with ByteAcc. All fields withing SMBus regions must be
13412 declared with the BufferAcc access type.
13414 Fixed a problem where the listing file output of control methods
13415 no longer interleaved the actual AML code with the ASL source
13421 ----------------------------------------
13422 Summary of changes for this label: 11_09_01
13424 1) ACPI CA Core Subsystem:
13426 Implemented ACPI 2.0-defined support for writes to fields with a
13427 Buffer, String, or Integer source operand that is smaller than the
13428 target field. In these cases, the source operand is zero-extended
13429 to fill the target field.
13431 Fixed a problem where a Field starting bit offset (within the
13432 parent operation region) was calculated incorrectly if the
13434 alignment of the field differed from the access width. This
13435 affected CreateWordField, CreateDwordField, CreateQwordField, and
13436 possibly other fields that use the "AccessAny" keyword.
13438 Fixed a problem introduced in the 11_02_01 release where indirect
13439 stores through method arguments did not operate correctly.
13443 Implemented boot-time ACPI table parsing support
13444 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
13445 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
13446 legacy BIOS interfaces (e.g. MPS) for the configuration of system
13447 processors, memory, and interrupts during setup_arch(). Note that
13448 this patch does not include the required architecture-specific
13449 changes required to apply this information -- subsequent patches
13450 will be posted for both IA32 and IA64 to achieve this.
13452 Added low-level sleep support for IA32 platforms, courtesy of Pat
13453 Mochel. This allows IA32 systems to transition to/from various
13454 sleeping states (e.g. S1, S3), although the lack of a centralized
13455 driver model and power-manageable drivers will prevent its
13456 (successful) use on most systems.
13458 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
13459 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
13460 tables" option, etc.
13462 Increased the default timeout for the EC driver from 1ms to 10ms
13463 (1000 cycles of 10us) to try to address AE_TIME errors during EC
13466 ----------------------------------------
13467 Summary of changes for this label: 11_02_01
13469 1) ACPI CA Core Subsystem:
13471 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
13472 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
13475 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
13476 changes to support ACPI 2.0 Qword field access. Read/Write
13477 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
13478 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
13479 the value parameter for the address space handler interface is now
13480 an ACPI_INTEGER. OSL implementations of these interfaces must now
13481 handle the case where the Width parameter is 64.
13483 Index Fields: Fixed a problem where unaligned bit assembly and
13484 disassembly for IndexFields was not supported correctly.
13486 Index and Bank Fields: Nested Index and Bank Fields are now
13487 supported. During field access, a check is performed to ensure
13488 that the value written to an Index or Bank register is not out of
13489 the range of the register. The Index (or Bank) register is
13490 written before each access to the field data. Future support will
13491 include allowing individual IndexFields to be wider than the
13492 DataRegister width.
13494 Fields: Fixed a problem where the AML interpreter was incorrectly
13495 attempting to write beyond the end of a Field/OpRegion. This was
13496 a boundary case that occurred when a DWORD field was written to a
13497 BYTE access OpRegion, forcing multiple writes and causing the
13498 interpreter to write one datum too many.
13500 Fields: Fixed a problem with Field/OpRegion access where the
13501 starting bit address of a field was incorrectly calculated if the
13502 current access type was wider than a byte (WordAcc, DwordAcc, or
13505 Fields: Fixed a problem where forward references to individual
13506 FieldUnits (individual Field names within a Field definition) were
13507 not resolved during the AML table load.
13509 Fields: Fixed a problem where forward references from a Field
13510 definition to the parent Operation Region definition were not
13511 resolved during the AML table load.
13513 Fields: Duplicate FieldUnit names within a scope are now detected
13514 during AML table load.
13516 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
13517 returned an incorrect name for the root node.
13519 Code and Data Size: Code and Data optimizations have permitted new
13520 feature development with an actual reduction in the library size.
13521 Current core subsystem library sizes are shown below. These are
13522 the code and data sizes for the acpica.lib produced by the
13523 Microsoft Visual C++ 6.0 compiler, and these values do not include
13524 any ACPI driver or OSPM code. The debug version of the code
13525 includes the debug output trace mechanism and has a larger code
13526 and data size. Note that these values will vary depending on the
13527 efficiency of the compiler and the compiler options used during
13530 Previous Release (10_18_01):
13531 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13532 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13535 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13536 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13540 Improved /proc processor output (Pavel Machek) Re-added
13541 MODULE_LICENSE("GPL") to all modules.
13543 3) ASL Compiler version X2030:
13545 Duplicate FieldUnit names within a scope are now detected and
13550 Programmer Reference updated to reflect OSL and address space
13551 handler interface changes described above.
13553 ----------------------------------------
13554 Summary of changes for this label: 10_18_01
13556 ACPI CA Core Subsystem:
13558 Fixed a problem with the internal object reference count mechanism
13559 that occasionally caused premature object deletion. This resolves
13560 all of the outstanding problem reports where an object is deleted
13561 in the middle of an interpreter evaluation. Although this problem
13562 only showed up in rather obscure cases, the solution to the
13563 problem involved an adjustment of all reference counts involving
13564 objects attached to namespace nodes.
13566 Fixed a problem with Field support in the interpreter where
13567 writing to an aligned field whose length is an exact multiple (2
13568 or greater) of the field access granularity would cause an attempt
13569 to write beyond the end of the field.
13571 The top level AML opcode execution functions within the
13572 interpreter have been renamed with a more meaningful and
13573 consistent naming convention. The modules exmonad.c and
13574 exdyadic.c were eliminated. New modules are exoparg1.c,
13575 exoparg2.c, exoparg3.c, and exoparg6.c.
13577 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
13579 Fixed a problem where the AML debugger was causing some internal
13580 objects to not be deleted during subsystem termination.
13582 Fixed a problem with the external AcpiEvaluateObject interface
13583 where the subsystem would fault if the named object to be
13584 evaluated refered to a constant such as Zero, Ones, etc.
13586 Fixed a problem with IndexFields and BankFields where the
13587 subsystem would fault if the index, data, or bank registers were
13588 not defined in the same scope as the field itself.
13590 Added printf format string checking for compilers that support
13591 this feature. Corrected more than 50 instances of issues with
13592 format specifiers within invocations of ACPI_DEBUG_PRINT
13593 throughout the core subsystem code.
13595 The ASL "Revision" operator now returns the ACPI support level
13596 implemented in the core - the value "2" since the ACPI 2.0 support
13597 is more than 50% implemented.
13599 Enhanced the output of the AML debugger "dump namespace" command
13600 to output in a more human-readable form.
13602 Current core subsystem library code sizes are shown below. These
13604 are the code and data sizes for the acpica.lib produced by the
13605 Microsoft Visual C++ 6.0 compiler, and these values do not include
13606 any ACPI driver or OSPM code. The debug version of the code
13607 includes the full debug trace mechanism -- leading to a much
13609 larger code and data size. Note that these values will vary
13610 depending on the efficiency of the compiler and the compiler
13611 options used during generation.
13613 Previous Label (09_20_01):
13614 Non-Debug Version: 65K Code, 5K Data, 70K Total
13615 Debug Version: 138K Code, 58K Data, 196K Total
13619 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13620 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13624 Implemented a "Bad BIOS Blacklist" to track machines that have
13625 known ASL/AML problems.
13627 Enhanced the /proc interface for the thermal zone driver and added
13628 support for _HOT (the critical suspend trip point). The 'info'
13629 file now includes threshold/policy information, and allows setting
13630 of _SCP (cooling preference) and _TZP (polling frequency) values
13631 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
13632 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
13633 preference to the passive/quiet mode (if supported by the ASL).
13635 Implemented a workaround for a gcc bug that resuted in an OOPs
13636 when loading the control method battery driver.
13638 ----------------------------------------
13639 Summary of changes for this label: 09_20_01
13641 ACPI CA Core Subsystem:
13643 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
13644 modified to allow individual GPE levels to be flagged as wake-
13645 enabled (i.e., these GPEs are to remain enabled when the platform
13648 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
13649 support wake-enabled GPEs. This means that upon entering the
13650 sleep state, all GPEs that are not wake-enabled are disabled.
13651 When leaving the sleep state, these GPEs are reenabled.
13653 A local double-precision divide/modulo module has been added to
13654 enhance portability to OS kernels where a 64-bit math library is
13655 not available. The new module is "utmath.c".
13657 Several optimizations have been made to reduce the use of CPU
13658 stack. Originally over 2K, the maximum stack usage is now below
13659 2K at 1860 bytes (1.82k)
13661 Fixed a problem with the AcpiGetFirmwareTable interface where the
13662 root table pointer was not mapped into a logical address properly.
13664 Fixed a problem where a NULL pointer was being dereferenced in the
13665 interpreter code for the ASL Notify operator.
13667 Fixed a problem where the use of the ASL Revision operator
13668 returned an error. This operator now returns the current version
13669 of the ACPI CA core subsystem.
13671 Fixed a problem where objects passed as control method parameters
13672 to AcpiEvaluateObject were always deleted at method termination.
13673 However, these objects may end up being stored into the namespace
13674 by the called method. The object reference count mechanism was
13675 applied to these objects instead of a force delete.
13677 Fixed a problem where static strings or buffers (contained in the
13678 AML code) that are declared as package elements within the ASL
13679 code could cause a fault because the interpreter would attempt to
13680 delete them. These objects are now marked with the "static
13681 object" flag to prevent any attempt to delete them.
13683 Implemented an interpreter optimization to use operands directly
13684 from the state object instead of extracting the operands to local
13685 variables. This reduces stack use and code size, and improves
13688 The module exxface.c was eliminated as it was an unnecessary extra
13691 Current core subsystem library code sizes are shown below. These
13692 are the code and data sizes for the acpica.lib produced by the
13693 Microsoft Visual C++ 6.0 compiler, and these values do not include
13694 any ACPI driver or OSPM code. The debug version of the code
13695 includes the full debug trace mechanism -- leading to a much
13696 larger code and data size. Note that these values will vary
13697 depending on the efficiency of the compiler and the compiler
13698 options used during generation.
13700 Non-Debug Version: 65K Code, 5K Data, 70K Total
13701 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
13702 Total (Previously 195K)
13706 Support for ACPI 2.0 64-bit integers has been added. All ACPI
13707 Integer objects are now 64 bits wide
13709 All Acpi data types and structures are now in lower case. Only
13710 Acpi macros are upper case for differentiation.
13714 Changes to the external interfaces as described above.
13716 ----------------------------------------
13717 Summary of changes for this label: 08_31_01
13719 ACPI CA Core Subsystem:
13721 A bug with interpreter implementation of the ASL Divide operator
13722 was found and fixed. The implicit function return value (not the
13723 explicit store operands) was returning the remainder instead of
13724 the quotient. This was a longstanding bug and it fixes several
13725 known outstanding issues on various platforms.
13727 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
13728 been further optimized for size. There are 700 invocations of the
13729 DEBUG_PRINT macro alone, so each optimization reduces the size of
13730 the debug version of the subsystem significantly.
13732 A stack trace mechanism has been implemented. The maximum stack
13733 usage is about 2K on 32-bit platforms. The debugger command "stat
13734 stack" will display the current maximum stack usage.
13736 All public symbols and global variables within the subsystem are
13737 now prefixed with the string "Acpi". This keeps all of the
13738 symbols grouped together in a kernel map, and avoids conflicts
13739 with other kernel subsystems.
13741 Most of the internal fixed lookup tables have been moved into the
13742 code segment via the const operator.
13744 Several enhancements have been made to the interpreter to both
13745 reduce the code size and improve performance.
13747 Current core subsystem library code sizes are shown below. These
13748 are the code and data sizes for the acpica.lib produced by the
13749 Microsoft Visual C++ 6.0 compiler, and these values do not include
13750 any ACPI driver or OSPM code. The debug version of the code
13751 includes the full debug trace mechanism which contains over 700
13752 invocations of the DEBUG_PRINT macro, 500 function entry macro
13753 invocations, and over 900 function exit macro invocations --
13754 leading to a much larger code and data size. Note that these
13755 values will vary depending on the efficiency of the compiler and
13756 the compiler options used during generation.
13758 Non-Debug Version: 64K Code, 5K Data, 69K Total
13759 Debug Version: 137K Code, 58K Data, 195K Total
13763 Implemented wbinvd() macro, pending a kernel-wide definition.
13765 Fixed /proc/acpi/event to handle poll() and short reads.
13767 ASL Compiler, version X2026:
13769 Fixed a problem introduced in the previous label where the AML
13771 code emitted for package objects produced packages with zero
13774 ----------------------------------------
13775 Summary of changes for this label: 08_16_01
13777 ACPI CA Core Subsystem:
13779 The following ACPI 2.0 ASL operators have been implemented in the
13780 AML interpreter (These are already supported by the Intel ASL
13781 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
13782 ToBuffer. Support for 64-bit AML constants is implemented in the
13783 AML parser, debugger, and disassembler.
13785 The internal memory tracking mechanism (leak detection code) has
13786 been upgraded to reduce the memory overhead (a separate tracking
13787 block is no longer allocated for each memory allocation), and now
13788 supports all of the internal object caches.
13790 The data structures and code for the internal object caches have
13791 been coelesced and optimized so that there is a single cache and
13792 memory list data structure and a single group of functions that
13793 implement generic cache management. This has reduced the code
13794 size in both the debug and release versions of the subsystem.
13796 The DEBUG_PRINT macro(s) have been optimized for size and replaced
13797 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
13798 different, because it generates a single call to an internal
13799 function. This results in a savings of about 90 bytes per
13800 invocation, resulting in an overall code and data savings of about
13801 16% in the debug version of the subsystem.
13805 Fixed C3 disk corruption problems and re-enabled C3 on supporting
13808 Integrated low-level sleep code by Patrick Mochel.
13810 Further tweaked source code Linuxization.
13816 Support for ACPI 2.0 variable length packages is fixed/completed.
13818 Fixed a problem where the optional length parameter for the ACPI
13819 2.0 ToString operator.
13821 Fixed multiple extraneous error messages when a syntax error is
13822 detected within the declaration line of a control method.
13824 ----------------------------------------
13825 Summary of changes for this label: 07_17_01
13827 ACPI CA Core Subsystem:
13829 Added a new interface named AcpiGetFirmwareTable to obtain any
13830 ACPI table via the ACPI signature. The interface can be called at
13831 any time during kernel initialization, even before the kernel
13832 virtual memory manager is initialized and paging is enabled. This
13833 allows kernel subsystems to obtain ACPI tables very early, even
13834 before the ACPI CA subsystem is initialized.
13836 Fixed a problem where Fields defined with the AnyAcc attribute
13837 could be resolved to the incorrect address under the following
13838 conditions: 1) the field width is larger than 8 bits and 2) the
13839 parent operation region is not defined on a DWORD boundary.
13841 Fixed a problem where the interpreter is not being locked during
13842 namespace initialization (during execution of the _INI control
13843 methods), causing an error when an attempt is made to release it
13846 ACPI 2.0 support in the AML Interpreter has begun and will be
13847 ongoing throughout the rest of this year. In this label, The Mod
13848 operator is implemented.
13850 Added a new data type to contain full PCI addresses named
13851 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
13852 and Function values.
13856 Enhanced the Linux version of the source code to change most
13857 capitalized ACPI type names to lowercase. For example, all
13858 instances of ACPI_STATUS are changed to acpi_status. This will
13859 result in a large diff, but the change is strictly cosmetic and
13860 aligns the CA code closer to the Linux coding standard.
13864 The interfaces to the PCI configuration space have been changed to
13865 add the PCI Segment number and to split the single 32-bit combined
13866 DeviceFunction field into two 16-bit fields. This was
13867 accomplished by moving the four values that define an address in
13868 PCI configuration space (segment, bus, device, and function) to
13869 the new ACPI_PCI_ID structure.
13871 The changes to the PCI configuration space interfaces led to a
13872 reexamination of the complete set of address space access
13873 interfaces for PCI, I/O, and Memory. The previously existing 18
13874 interfaces have proven difficult to maintain (any small change
13875 must be propagated across at least 6 interfaces) and do not easily
13876 allow for future expansion to 64 bits if necessary. Also, on some
13877 systems, it would not be appropriate to demultiplex the access
13878 width (8, 16, 32,or 64) before calling the OSL if the
13879 corresponding native OS interfaces contain a similar access width
13880 parameter. For these reasons, the 18 address space interfaces
13881 have been replaced by these 6 new ones:
13883 AcpiOsReadPciConfiguration
13884 AcpiOsWritePciConfiguration
13890 Added a new interface named AcpiOsGetRootPointer to allow the OSL
13891 to perform the platform and/or OS-specific actions necessary to
13892 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
13893 interface will simply call down to the CA core to perform the low-
13894 memory search for the table. On IA-64, the RSDP is obtained from
13895 EFI. Migrating this interface to the OSL allows the CA core to
13897 remain OS and platform independent.
13899 Added a new interface named AcpiOsSignal to provide a generic
13900 "function code and pointer" interface for various miscellaneous
13901 signals and notifications that must be made to the host OS. The
13902 first such signals are intended to support the ASL Fatal and
13903 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
13904 interface has been obsoleted.
13906 The definition of the AcpiFormatException interface has been
13907 changed to simplify its use. The caller no longer must supply a
13908 buffer to the call; A pointer to a const string is now returned
13909 directly. This allows the call to be easily used in printf
13910 statements, etc. since the caller does not have to manage a local
13914 ASL Compiler, Version X2025:
13916 The ACPI 2.0 Switch/Case/Default operators have been implemented
13917 and are fully functional. They will work with all ACPI 1.0
13918 interpreters, since the operators are simply translated to If/Else
13921 The ACPI 2.0 ElseIf operator is implemented and will also work
13922 with 1.0 interpreters, for the same reason.
13924 Implemented support for ACPI 2.0 variable-length packages. These
13925 packages have a separate opcode, and their size is determined by
13926 the interpreter at run-time.
13928 Documentation The ACPI CA Programmer Reference has been updated to
13929 reflect the new interfaces and changes to existing interfaces.
13931 ------------------------------------------
13932 Summary of changes for this label: 06_15_01
13934 ACPI CA Core Subsystem:
13936 Fixed a problem where a DWORD-accessed field within a Buffer
13937 object would get its byte address inadvertently rounded down to
13938 the nearest DWORD. Buffers are always Byte-accessible.
13940 ASL Compiler, version X2024:
13942 Fixed a problem where the Switch() operator would either fault or
13943 hang the compiler. Note however, that the AML code for this ACPI
13944 2.0 operator is not yet implemented.
13946 Compiler uses the new AcpiOsGetTimer interface to obtain compile
13949 Implementation of the CreateField operator automatically converts
13950 a reference to a named field within a resource descriptor from a
13951 byte offset to a bit offset if required.
13953 Added some missing named fields from the resource descriptor
13954 support. These are the names that are automatically created by the
13955 compiler to reference fields within a descriptor. They are only
13956 valid at compile time and are not passed through to the AML
13959 Resource descriptor named fields are now typed as Integers and
13960 subject to compile-time typechecking when used in expressions.
13962 ------------------------------------------
13963 Summary of changes for this label: 05_18_01
13965 ACPI CA Core Subsystem:
13967 Fixed a couple of problems in the Field support code where bits
13968 from adjacent fields could be returned along with the proper field
13969 bits. Restructured the field support code to improve performance,
13970 readability and maintainability.
13972 New DEBUG_PRINTP macro automatically inserts the procedure name
13973 into the output, saving hundreds of copies of procedure name
13974 strings within the source, shrinking the memory footprint of the
13975 debug version of the core subsystem.
13977 Source Code Structure:
13979 The source code directory tree was restructured to reflect the
13980 current organization of the component architecture. Some files
13981 and directories have been moved and/or renamed.
13985 Fixed leaking kacpidpc processes.
13987 Fixed queueing event data even when /proc/acpi/event is not
13990 ASL Compiler, version X2020:
13992 Memory allocation performance enhancement - over 24X compile time
13993 improvement on large ASL files. Parse nodes and namestring
13994 buffers are now allocated from a large internal compiler buffer.
13996 The temporary .SRC file is deleted unless the "-s" option is
13999 The "-d" debug output option now sends all output to the .DBG file
14000 instead of the console.
14002 "External" second parameter is now optional
14004 "ElseIf" syntax now properly allows the predicate
14006 Last operand to "Load" now recognized as a Target operand
14008 Debug object can now be used anywhere as a normal object.
14010 ResourceTemplate now returns an object of type BUFFER
14012 EISAID now returns an object of type INTEGER
14014 "Index" now works with a STRING operand
14016 "LoadTable" now accepts optional parameters
14018 "ToString" length parameter is now optional
14020 "Interrupt (ResourceType," parse error fixed.
14022 "Register" with a user-defined region space parse error fixed
14024 Escaped backslash at the end of a string ("\\") scan/parse error
14027 "Revision" is now an object of type INTEGER.
14031 ------------------------------------------
14032 Summary of changes for this label: 05_02_01
14036 /proc/acpi/event now blocks properly.
14038 Removed /proc/sys/acpi. You can still dump your DSDT from
14041 ACPI CA Core Subsystem:
14043 Fixed a problem introduced in the previous label where some of the
14044 "small" resource descriptor types were not recognized.
14046 Improved error messages for the case where an ASL Field is outside
14047 the range of the parent operation region.
14049 ASL Compiler, version X2018:
14052 Added error detection for ASL Fields that extend beyond the length
14053 of the parent operation region (only if the length of the region
14054 is known at compile time.) This includes fields that have a
14055 minimum access width that is smaller than the parent region, and
14056 individual field units that are partially or entirely beyond the
14057 extent of the parent.
14061 ------------------------------------------
14062 Summary of changes for this label: 04_27_01
14064 ACPI CA Core Subsystem:
14066 Fixed a problem where the namespace mutex could be released at the
14067 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14069 Added optional thread ID output for debug traces, to simplify
14070 debugging of multiple threads. Added context switch notification
14071 when the debug code realizes that a different thread is now
14072 executing ACPI code.
14074 Some additional external data types have been prefixed with the
14075 string "ACPI_" for consistency. This may effect existing code.
14076 The data types affected are the external callback typedefs - e.g.,
14078 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14082 Fixed an issue with the OSL semaphore implementation where a
14083 thread was waking up with an error from receiving a SIGCHLD
14086 Linux version of ACPI CA now uses the system C library for string
14087 manipulation routines instead of a local implementation.
14089 Cleaned up comments and removed TBDs.
14091 ASL Compiler, version X2017:
14093 Enhanced error detection and reporting for all file I/O
14098 Programmer Reference updated to version 1.06.
14102 ------------------------------------------
14103 Summary of changes for this label: 04_13_01
14105 ACPI CA Core Subsystem:
14107 Restructured support for BufferFields and RegionFields.
14108 BankFields support is now fully operational. All known 32-bit
14109 limitations on field sizes have been removed. Both BufferFields
14110 and (Operation) RegionFields are now supported by the same field
14113 Resource support now supports QWORD address and IO resources. The
14114 16/32/64 bit address structures and the Extended IRQ structure
14115 have been changed to properly handle Source Resource strings.
14117 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14118 condition internally and must never be returned by AcpiOsThreadId.
14119 This reserved value was changed from 0 since Unix systems allow a
14124 Driver code reorganized to enhance portability
14126 Added a kernel configuration option to control ACPI_DEBUG
14128 Fixed the EC driver to honor _GLK.
14130 ASL Compiler, version X2016:
14132 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14133 address space was set to 0, not 0x7f as it should be.
14135 ------------------------------------------
14136 Summary of changes for this label: 03_13_01
14138 ACPI CA Core Subsystem:
14140 During ACPI initialization, the _SB_._INI method is now run if
14143 Notify handler fix - notifies are deferred until the parent method
14144 completes execution. This fixes the "mutex already acquired"
14145 issue seen occasionally.
14147 Part of the "implicit conversion" rules in ACPI 2.0 have been
14148 found to cause compatibility problems with existing ASL/AML. The
14149 convert "result-to-target-type" implementation has been removed
14150 for stores to method Args and Locals. Source operand conversion
14151 is still fully implemented. Possible changes to ACPI 2.0
14152 specification pending.
14154 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14157 Fix for compiler warnings for 64-bit compiles.
14161 /proc output aligned for easier parsing.
14163 Release-version compile problem fixed.
14165 New kernel configuration options documented in Configure.help.
14167 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14172 Power resource driver integrated with bus manager.
14174 Fixed kernel fault during active cooling for thermal zones.
14178 The source code tree has been restructured.
14182 ------------------------------------------
14183 Summary of changes for this label: 03_02_01
14185 Linux OS Services Layer (OSL):
14187 Major revision of all Linux-specific code.
14189 Modularized all ACPI-specific drivers.
14191 Added new thermal zone and power resource drivers.
14193 Revamped /proc interface (new functionality is under /proc/acpi).
14195 New kernel configuration options.
14197 Linux known issues:
14199 New kernel configuration options not documented in Configure.help
14203 Module dependencies not currently implemented. If used, they
14204 should be loaded in this order: busmgr, power, ec, system,
14205 processor, battery, ac_adapter, button, thermal.
14207 Modules will not load if CONFIG_MODVERSION is set.
14209 IBM 600E - entering S5 may reboot instead of shutting down.
14211 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14214 Some systems may fail with "execution mutex already acquired"
14217 ACPI CA Core Subsystem:
14219 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14220 for the deadlock detection code. Defined to return a non-zero, 32-
14221 bit thread ID for the currently executing thread. May be a non-
14222 zero constant integer on single-thread systems.
14224 Implemented deadlock detection for internal subsystem mutexes. We
14225 may add conditional compilation for this code (debug only) later.
14227 ASL/AML Mutex object semantics are now fully supported. This
14228 includes multiple acquires/releases by owner and support for the
14230 Mutex SyncLevel parameter.
14232 A new "Force Release" mechanism automatically frees all ASL
14233 Mutexes that have been acquired but not released when a thread
14234 exits the interpreter. This forces conformance to the ACPI spec
14235 ("All mutexes must be released when an invocation exits") and
14236 prevents deadlocked ASL threads. This mechanism can be expanded
14237 (later) to monitor other resource acquisitions if OEM ASL code
14238 continues to misbehave (which it will).
14240 Several new ACPI exception codes have been added for the Mutex
14243 Recursive method calls are now allowed and supported (the ACPI
14244 spec does in fact allow recursive method calls.) The number of
14245 recursive calls is subject to the restrictions imposed by the
14246 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14249 Implemented support for the SyncLevel parameter for control
14250 methods (ACPI 2.0 feature)
14252 Fixed a deadlock problem when multiple threads attempted to use
14255 Fixed a problem where the string length of a String package
14256 element was not always set in a package returned from
14257 AcpiEvaluateObject.
14259 Fixed a problem where the length of a String package element was
14260 not always included in the length of the overall package returned
14261 from AcpiEvaluateObject.
14263 Added external interfaces (Acpi*) to the ACPI debug memory
14264 manager. This manager keeps a list of all outstanding
14265 allocations, and can therefore detect memory leaks and attempts to
14266 free memory blocks more than once. Useful for code such as the
14267 power manager, etc. May not be appropriate for device drivers.
14268 Performance with the debug code enabled is slow.
14270 The ACPI Global Lock is now an optional hardware element.
14272 ASL Compiler Version X2015:
14274 Integrated changes to allow the compiler to be generated on
14275 multiple platforms.
14277 Linux makefile added to generate the compiler on Linux
14281 All platform-specific headers have been moved to their own
14282 subdirectory, Include/Platform.
14284 New source file added, Interpreter/ammutex.c
14286 New header file, Include/acstruct.h
14290 The programmer reference has been updated for the following new
14291 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
14293 ------------------------------------------
14294 Summary of changes for this label: 02_08_01
14296 Core ACPI CA Subsystem: Fixed a problem where an error was
14297 incorrectly returned if the return resource buffer was larger than
14298 the actual data (in the resource interfaces).
14300 References to named objects within packages are resolved to the
14302 full pathname string before packages are returned directly (via
14303 the AcpiEvaluateObject interface) or indirectly via the resource
14306 Linux OS Services Layer (OSL):
14308 Improved /proc battery interface.
14311 Added C-state debugging output and other miscellaneous fixes.
14313 ASL Compiler Version X2014:
14315 All defined method arguments can now be used as local variables,
14316 including the ones that are not actually passed in as parameters.
14317 The compiler tracks initialization of the arguments and issues an
14318 exception if they are used without prior assignment (just like
14321 The -o option now specifies a filename prefix that is used for all
14322 output files, including the AML output file. Otherwise, the
14323 default behavior is as follows: 1) the AML goes to the file
14324 specified in the DSDT. 2) all other output files use the input
14325 source filename as the base.
14327 ------------------------------------------
14328 Summary of changes for this label: 01_25_01
14330 Core ACPI CA Subsystem: Restructured the implementation of object
14331 store support within the interpreter. This includes support for
14332 the Store operator as well as any ASL operators that include a
14335 Partially implemented support for Implicit Result-to-Target
14336 conversion. This is when a result object is converted on the fly
14337 to the type of an existing target object. Completion of this
14338 support is pending further analysis of the ACPI specification
14339 concerning this matter.
14341 CPU-specific code has been removed from the subsystem (hardware
14344 New Power Management Timer functions added
14346 Linux OS Services Layer (OSL): Moved system state transition code
14347 to the core, fixed it, and modified Linux OSL accordingly.
14349 Fixed C2 and C3 latency calculations.
14352 We no longer use the compilation date for the version message on
14353 initialization, but retrieve the version from AcpiGetSystemInfo().
14355 Incorporated for fix Sony VAIO machines.
14357 Documentation: The Programmer Reference has been updated and
14361 ASL Compiler: Version X2013: Fixed a problem where the line
14362 numbering and error reporting could get out of sync in the
14363 presence of multiple include files.
14365 ------------------------------------------
14366 Summary of changes for this label: 01_15_01
14368 Core ACPI CA Subsystem:
14370 Implemented support for type conversions in the execution of the
14371 ASL Concatenate operator (The second operand is converted to
14372 match the type of the first operand before concatenation.)
14374 Support for implicit source operand conversion is partially
14375 implemented. The ASL source operand types Integer, Buffer, and
14376 String are freely interchangeable for most ASL operators and are
14377 converted by the interpreter on the fly as required. Implicit
14378 Target operand conversion (where the result is converted to the
14379 target type before storing) is not yet implemented.
14381 Support for 32-bit and 64-bit BCD integers is implemented.
14383 Problem fixed where a field read on an aligned field could cause a
14384 read past the end of the field.
14386 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
14387 does not return a value, but the caller expects one. (The ASL
14388 compiler flags this as a warning.)
14393 1. Static typechecking of all operands is implemented. This
14394 prevents the use of invalid objects (such as using a Package where
14395 an Integer is required) at compile time instead of at interpreter
14397 2. The ASL source line is printed with ALL errors and warnings.
14398 3. Bug fix for source EOF without final linefeed.
14399 4. Debug option is split into a parse trace and a namespace trace.
14400 5. Namespace output option (-n) includes initial values for
14401 integers and strings.
14402 6. Parse-only option added for quick syntax checking.
14403 7. Compiler checks for duplicate ACPI name declarations
14406 1. Relaxed typechecking to allow interchangeability between
14407 strings, integers, and buffers. These types are now converted by
14408 the interpreter at runtime.
14409 2. Compiler reports time taken by each internal subsystem in the
14413 ------------------------------------------
14414 Summary of changes for this label: 12_14_00
14418 This is the first official release of the compiler. Since the
14419 compiler requires elements of the Core Subsystem, this label
14420 synchronizes everything.
14422 ------------------------------------------
14423 Summary of changes for this label: 12_08_00
14426 Fixed a problem where named references within the ASL definition
14427 of both OperationRegions and CreateXXXFields did not work
14428 properly. The symptom was an AE_AML_OPERAND_TYPE during
14429 initialization of the region/field. This is similar (but not
14430 related internally) to the problem that was fixed in the last
14433 Implemented both 32-bit and 64-bit support for the BCD ASL
14434 functions ToBCD and FromBCD.
14436 Updated all legal headers to include "2000" in the copyright
14439 ------------------------------------------
14440 Summary of changes for this label: 12_01_00
14442 Fixed a problem where method invocations within the ASL definition
14443 of both OperationRegions and CreateXXXFields did not work
14444 properly. The symptom was an AE_AML_OPERAND_TYPE during
14445 initialization of the region/field:
14447 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
14448 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
14451 Fixed a problem where operators with more than one nested
14452 subexpression would fail. The symptoms were varied, by mostly
14453 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
14454 problem that has gone unnoticed until now.
14456 Subtract (Add (1,2), Multiply (3,4))
14458 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
14459 previous build (The prefix part of a relative path was handled
14462 Fixed a problem where Operation Region initialization failed if
14463 the operation region name was a "namepath" instead of a simple
14464 "nameseg". Symptom was an AE_NO_OPERAND error.
14466 Fixed a problem where an assignment to a local variable via the
14467 indirect RefOf mechanism only worked for the first such
14468 assignment. Subsequent assignments were ignored.
14470 ------------------------------------------
14471 Summary of changes for this label: 11_15_00
14473 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
14474 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
14475 the AML interpreter does NOT have support for the new 2.0 ASL
14476 grammar terms at this time.
14478 All ACPI hardware access is via the GAS structures in the ACPI 2.0
14481 All physical memory addresses across all platforms are now 64 bits
14482 wide. Logical address width remains dependent on the platform
14485 AcpiOsMapMemory interface changed to a 64-bit physical address.
14487 The AML interpreter integer size is now 64 bits, as per the ACPI
14490 For backwards compatibility with ACPI 1.0, ACPI tables with a
14491 revision number less than 2 use 32-bit integers only.
14493 Fixed a problem where the evaluation of OpRegion operands did not
14494 always resolve them to numbers properly.
14496 ------------------------------------------
14497 Summary of changes for this label: 10_20_00
14499 Fix for CBN_._STA issue. This fix will allow correct access to
14500 CBN_ OpRegions when the _STA returns 0x8.
14502 Support to convert ACPI constants (Ones, Zeros, One) to actual
14503 values before a package object is returned
14505 Fix for method call as predicate to if/while construct causing
14506 incorrect if/while behavior
14508 Fix for Else block package lengths sometimes calculated wrong (if
14511 Fix for Processor object length field, was always zero
14513 Table load abort if FACP sanity check fails
14515 Fix for problem with Scope(name) if name already exists
14517 Warning emitted if a named object referenced cannot be found
14518 (resolved) during method execution.
14524 ------------------------------------------
14525 Summary of changes for this label: 9_29_00
14527 New table initialization interfaces: AcpiInitializeSubsystem no
14528 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
14529 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
14530 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
14533 Note: These interface changes require changes to all existing OSDs
14535 The PCI_Config default address space handler is always installed
14536 at the root namespace object.
14538 -------------------------------------------
14539 Summary of changes for this label: 09_15_00
14541 The new initialization architecture is implemented. New
14542 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
14543 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
14545 (Namespace is automatically loaded when a table is loaded)
14547 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
14548 52 bytes to 32 bytes. There is usually one of these for every
14549 namespace object, so the memory savings is significant.
14551 Implemented just-in-time evaluation of the CreateField operators.
14553 Bug fixes for IA-64 support have been integrated.
14555 Additional code review comments have been implemented
14557 The so-called "third pass parse" has been replaced by a final walk
14558 through the namespace to initialize all operation regions (address
14559 spaces) and fields that have not yet been initialized during the
14560 execution of the various _INI and REG methods.
14562 New file - namespace/nsinit.c
14564 -------------------------------------------
14565 Summary of changes for this label: 09_01_00
14567 Namespace manager data structures have been reworked to change the
14568 primary object from a table to a single object. This has
14569 resulted in dynamic memory savings of 3X within the namespace and
14570 2X overall in the ACPI CA subsystem.
14572 Fixed problem where the call to AcpiEvFindPciRootBuses was
14573 inadvertently left commented out.
14575 Reduced the warning count when generating the source with the GCC
14578 Revision numbers added to each module header showing the
14579 SourceSafe version of the file. Please refer to this version
14580 number when giving us feedback or comments on individual modules.
14582 The main object types within the subsystem have been renamed to
14583 clarify their purpose:
14585 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
14586 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
14587 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
14589 NOTE: no changes to the initialization sequence are included in
14592 -------------------------------------------
14593 Summary of changes for this label: 08_23_00
14595 Fixed problem where TerminateControlMethod was being called
14596 multiple times per method
14598 Fixed debugger problem where single stepping caused a semaphore to
14601 Improved performance through additional parse object caching -
14602 added ACPI_EXTENDED_OP type
14604 -------------------------------------------
14605 Summary of changes for this label: 08_10_00
14607 Parser/Interpreter integration: Eliminated the creation of
14608 complete parse trees for ACPI tables and control methods.
14609 Instead, parse subtrees are created and then deleted as soon as
14610 they are processed (Either entered into the namespace or executed
14611 by the interpreter). This reduces the use of dynamic kernel
14612 memory significantly. (about 10X)
14614 Exception codes broken into classes and renumbered. Be sure to
14615 recompile all code that includes acexcep.h. Hopefully we won't
14616 have to renumber the codes again now that they are split into
14617 classes (environment, programmer, AML code, ACPI table, and
14620 Fixed some additional alignment issues in the Resource Manager
14623 Implemented semaphore tracking in the AcpiExec utility, and fixed
14624 several places where mutexes/semaphores were being unlocked
14625 without a corresponding lock operation. There are no known
14626 semaphore or mutex "leaks" at this time.
14628 Fixed the case where an ASL Return operator is used to return an
14631 -------------------------------------------
14632 Summary of changes for this label: 07_28_00
14634 Fixed a problem with the way addresses were calculated in
14635 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
14636 manifested itself when a Field was created with WordAccess or
14637 DwordAccess, but the field unit defined within the Field was less
14639 than a Word or Dword.
14641 Fixed a problem in AmlDumpOperands() module's loop to pull
14642 operands off of the operand stack to display information. The
14643 problem manifested itself as a TLB error on 64-bit systems when
14644 accessing an operand stack with two or more operands.
14646 Fixed a problem with the PCI configuration space handlers where
14647 context was getting confused between accesses. This required a
14648 change to the generic address space handler and address space
14649 setup definitions. Handlers now get both a global handler context
14650 (this is the one passed in by the user when executing
14651 AcpiInstallAddressSpaceHandler() and a specific region context
14652 that is unique to each region (For example, the _ADR, _SEG and
14653 _BBN values associated with a specific region). The generic
14654 function definitions have changed to the following:
14656 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
14657 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
14658 *HandlerContext, // This used to be void *Context void
14659 *RegionContext); // This is an additional parameter
14661 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
14662 RegionHandle, UINT32 Function, void *HandlerContext, void
14663 **RegionContext); // This used to be **ReturnContext
14665 -------------------------------------------
14666 Summary of changes for this label: 07_21_00
14668 Major file consolidation and rename. All files within the
14669 interpreter have been renamed as well as most header files. This
14670 was done to prevent collisions with existing files in the host
14671 OSs -- filenames such as "config.h" and "global.h" seem to be
14672 quite common. The VC project files have been updated. All
14673 makefiles will require modification.
14675 The parser/interpreter integration continues in Phase 5 with the
14676 implementation of a complete 2-pass parse (the AML is parsed
14677 twice) for each table; This avoids the construction of a huge
14678 parse tree and therefore reduces the amount of dynamic memory
14679 required by the subsystem. Greater use of the parse object cache
14680 means that performance is unaffected.
14682 Many comments from the two code reviews have been rolled in.
14684 The 64-bit alignment support is complete.
14686 -------------------------------------------
14687 Summary of changes for this label: 06_30_00
14689 With a nod and a tip of the hat to the technology of yesteryear,
14690 we've added support in the source code for 80 column output
14691 devices. The code is now mostly constrained to 80 columns or
14692 less to support environments and editors that 1) cannot display
14693 or print more than 80 characters on a single line, and 2) cannot
14694 disable line wrapping.
14696 A major restructuring of the namespace data structure has been
14697 completed. The result is 1) cleaner and more
14698 understandable/maintainable code, and 2) a significant reduction
14699 in the dynamic memory requirement for each named ACPI object
14702 -------------------------------------------
14703 Summary of changes for this label: 06_23_00
14705 Linux support has been added. In order to obtain approval to get
14706 the ACPI CA subsystem into the Linux kernel, we've had to make
14707 quite a few changes to the base subsystem that will affect all
14708 users (all the changes are generic and OS- independent). The
14709 effects of these global changes have been somewhat far reaching.
14710 Files have been merged and/or renamed and interfaces have been
14711 renamed. The major changes are described below.
14713 Osd* interfaces renamed to AcpiOs* to eliminate namespace
14714 pollution/confusion within our target kernels. All OSD
14715 interfaces must be modified to match the new naming convention.
14717 Files merged across the subsystem. A number of the smaller source
14718 and header files have been merged to reduce the file count and
14719 increase the density of the existing files. There are too many
14720 to list here. In general, makefiles that call out individual
14721 files will require rebuilding.
14723 Interpreter files renamed. All interpreter files now have the
14724 prefix am* instead of ie* and is*.
14726 Header files renamed: The acapi.h file is now acpixf.h. The
14727 acpiosd.h file is now acpiosxf.h. We are removing references to
14728 the acronym "API" since it is somewhat windowsy. The new name is
14729 "external interface" or xface or xf in the filenames.j
14732 All manifest constants have been forced to upper case (some were
14733 mixed case.) Also, the string "ACPI_" has been prepended to many
14734 (not all) of the constants, typedefs, and structs.
14736 The globals "DebugLevel" and "DebugLayer" have been renamed
14737 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
14739 All other globals within the subsystem are now prefixed with
14740 "AcpiGbl_" Internal procedures within the subsystem are now
14741 prefixed with "Acpi" (with only a few exceptions). The original
14742 two-letter abbreviation for the subcomponent remains after "Acpi"
14743 - for example, CmCallocate became AcpiCmCallocate.
14745 Added a source code translation/conversion utility. Used to
14746 generate the Linux source code, it can be modified to generate
14747 other types of source as well. Can also be used to cleanup
14748 existing source by removing extraneous spaces and blank lines.
14749 Found in tools/acpisrc/*
14751 OsdUnMapMemory was renamed to OsdUnmapMemory and then
14752 AcpiOsUnmapMemory. (UnMap became Unmap).
14754 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
14755 When set to one, this indicates that the caller wants to use the
14757 semaphore as a mutex, not a counting semaphore. ACPI CA uses
14758 both types. However, implementers of this call may want to use
14759 different OS primitives depending on the type of semaphore
14760 requested. For example, some operating systems provide separate
14762 "mutex" and "semaphore" interfaces - where the mutex interface is
14763 much faster because it doesn't have all the overhead of a full
14764 semaphore implementation.
14766 Fixed a deadlock problem where a method that accesses the PCI
14767 address space can block forever if it is the first access to the
14770 -------------------------------------------
14771 Summary of changes for this label: 06_02_00
14773 Support for environments that cannot handle unaligned data
14774 accesses (e.g. firmware and OS environments devoid of alignment
14775 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
14776 been added (via configurable macros) in these three areas: -
14777 Transfer of data from the raw AML byte stream is done via byte
14778 moves instead of word/dword/qword moves. - External objects are
14779 aligned within the user buffer, including package elements (sub-
14780 objects). - Conversion of name strings to UINT32 Acpi Names is now
14783 The Store operator was modified to mimic Microsoft's
14784 implementation when storing to a Buffer Field.
14786 Added a check of the BM_STS bit before entering C3.
14788 The methods subdirectory has been obsoleted and removed. A new
14789 file, cmeval.c subsumes the functionality.
14791 A 16-bit (DOS) version of AcpiExec has been developed. The
14792 makefile is under the acpiexec directory.